text:
Real-Time Camera Planning for Navigation in Virtual Environments
Science Conference Proceedings (OSTI)
In this work, we have developed a real-time camera control module for navigation in virtual environments. With this module, the tracking motion of a third-person camera can be generated automatically to allow a user to focus on the control of an avatar. ... Keywords: Budget-based Planning, Intelligent Cam-era Control, Probabilistic Roadmap, Real-Time Camera Planning
Tsai-Yen Li; Chung-Chiang Cheng
High-speed camera characterization of voluntary eye blinking kinematics
E-Print Network (OSTI)
1 High-Speed Camera Characterisation of Voluntary Eye Blinking Kinematics Kyung-Ah Kwon, Rebecca J. Shipley, Mohan Edirisinghe* Department of Mechanical Engineering, University College London, Torrington Place, London, WC1E 7JE, UK Daniel... , M. G. 1980 Interaction of eyelids and tears in corneal wetting and the dynamics of the normal human eyeblink. Am J Ophthalmol. 89:507-516. 4. Bologna, M., Agostino, R., Gregori, B., Belvisi, D., Ottaviani, D., Colosimo, C., Fabbrini, G...
Kwon, K-A; Shipley, RJ; Edirisinghe, M; Ezra, DG; Rose, G; Best, Serena Michelle; Cameron, Ruth Elizabeth
... x8 (If you hold down the tab key while ... Right-clicking on the Navigator Window will present this pop ... This example shows tracks in the left image, and ...
LIDAR, Camera and Inertial Sensors Based Navigation Techniques for Advanced Intelligent Transportation System Applications.
??During the past decade, numerous research has been carried out in in-vehicle navigation and positioning. All the approaches are trying to solve two problems: "where… (more)
Huang, Lili
LIDAR, Camera and Inertial Sensors Based Navigation Techniques for Advanced Intelligent Transportation System Applications
in the vision sensor and LIDAR system development makes thisvehicle carries one camera and two IBEO ALASCA XT LIDARLIDARs. (a) SICK LMS200 LIDAR, (b) HOKUYO UXM-30LN LIDAR, (
A 8 bits Pipeline Analog to Digital Converter Design for High Speed Camera Application
- This paper describes a pipeline analog-to-digital converter is implemented for high speed camera. In the pipeline ADC design, prime factor is designing operational amplifier with high gain so ADC have been high speed. The other advantage of pipeline is simple on concept, easy to implement in layout and have flexibility to increase speed. We made design and simulation using Mentor Graphics Software with 0.6 \\mu m CMOS technology with a total power dissipation of 75.47 mW. Circuit techniques used include a precise comparator, operational amplifier and clock management. A switched capacitor is used to sample and multiplying at each stage. Simulation a worst case DNL and INL of 0.75 LSB. The design operates at 5 V dc. The ADC achieves a SNDR of 44.86 dB. keywords: pipeline, switched capacitor, clock management
Prasetyo, Eri; Ginhac, Nurul Huda Dominique; Paindavoine, Michel
Low cost alternative of high speed visible light camera for tokamak experiments
SciTech Connect
We present design, analysis, and performance evaluation of a new, low cost and high speed visible-light camera diagnostic system for tokamak experiments. The system is based on the camera Casio EX-F1, with the overall price of approximately a thousand USD. The achieved temporal resolution is up to 40 kHz. This new diagnostic was successfully implemented and tested at the university tokamak GOLEM (R = 0.4 m, a = 0.085 m, B{sub T} < 0.5 T, I{sub p} < 4 kA). One possible application of this new diagnostic at GOLEM is discussed in detail. This application is tomographic reconstruction for estimation of plasma position and emissivity.
Odstrcil, T.; Grover, O.; Svoboda, V. [Czech Technical University in Prague, FNSPE, Brehova 7, CZ-115 19 Praha 1 (Czech Republic); Odstrcil, M.; Duran, I.; Mlynar, J. [Czech Technical University in Prague, FNSPE, Brehova 7, CZ-115 19 Praha 1 (Czech Republic); Institute of Plasma Physics AS CR, v.v.i., Association Euratom-IPP.CR, Za Slovankou 3, CZ-182 00 Praha 8 (Czech Republic)
Property:Description of Camera Types | Open Energy Information
Open Energy Info (EERE)
Camera Types Camera Types Jump to: navigation, search Property Name Description of Camera Types Property Type Text Pages using the property "Description of Camera Types" Showing 25 pages using this property. (previous 25) (next 25) A Alden Large Flume + fully-submersible; multiplexor for four cameras; digital recording from all cameras; digital handheld Alden Small Flume + fully-submersible; multiplexor for four cameras; digital recording from all cameras; digital handheld Alden Tow Tank + Fully-submersible; multiplexor for four cameras; digital recording from all cameras; digital handheld Alden Wave Basin + Fully-submersible; multiplexor for four cameras; digital recording from all cameras; digital handheld C Conte Large Flume + Conventional underwater video, 4; high speed (1000 fps), 1
Masking a CCD camera allows multichord charge exchange spectroscopy measurements at high speed on the DIII-D tokamak
Charge exchange spectroscopy is one of the standard plasma diagnostic techniques used in tokamak research to determine ion temperature, rotation speed, particle density, and radial electric field. Configuring a charge coupled device (CCD) camera to serve as a detector in such a system requires a trade-off between the competing desires to detect light from as many independent spatial views as possible while still obtaining the best possible time resolution. High time resolution is essential, for example, for studying transient phenomena such as edge localized modes. By installing a mask in front of a camera with a 1024 x 1024 pixel CCD chip, we are able to acquire spectra from eight separate views while still achieving a minimum time resolution of 0.2 ms. The mask separates the light from the eight spectra, preventing spatial and temporal cross talk. A key part of the design was devising a compact translation stage which attaches to the front of the camera and allows adjustment of the position of the mask openings relative to the CCD surface. The stage is thin enough to fit into the restricted space between the CCD camera and the spectrometer endplate.
Meyer, O. [Euratom-CEA Association, DSM-IRFM, Cadarache, 13108 St Paul lez Durance (France); Burrell, K. H.; Chavez, J. A.; Kaplan, D. H. [General Atomics, PO Box 85608, San Diego, California 92186-5608 (United States); Chrystal, C.; Pablant, N. A. [University of California at San Diego, La Jolla, California 92093 (United States); Solomon, W. M. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)
A compact single-camera system for high-speed, simultaneous 3-D velocity and temperature measurements.
The University of Michigan and Sandia National Laboratories collaborated on the initial development of a compact single-camera approach for simultaneously measuring 3-D gasphase velocity and temperature fields at high frame rates. A compact diagnostic tool is desired to enable investigations of flows with limited optical access, such as near-wall flows in an internal combustion engine. These in-cylinder flows play a crucial role in improving engine performance. Thermographic phosphors were proposed as flow and temperature tracers to extend the capabilities of a novel, compact 3D velocimetry diagnostic to include high-speed thermometry. Ratiometric measurements were performed using two spectral bands of laser-induced phosphorescence emission from BaMg2Al10O17:Eu (BAM) phosphors in a heated air flow to determine the optimal optical configuration for accurate temperature measurements. The originally planned multi-year research project ended prematurely after the first year due to the Sandia-sponsored student leaving the research group at the University of Michigan.
Lu, Louise [University of Michigan, Ann Arbor, MI; Sick, Volker [University of Michigan, Ann Arbor, MI; Frank, Jonathan H.
CCD Camera
DOE Patents (OSTI)
A CCD camera capable of observing a moving object which has varying intensities of radiation emanating therefrom and which may move at varying speeds is shown wherein there is substantially no overlapping of successive images and wherein the exposure times and scan times may be varied independently of each other. 7 figs.
Roth, R.R.
area focuses on im- age processing algorithms, where the streaming image is the primary information- proach presented in this paper will utilize this strategy. The need for this kind of systems is motivated, infrastructure based positions from instrument landing systems or satellite positioning systems can be used
Schön, Thomas
MHL High Speed Cavitation | Open Energy Information
High Speed Cavitation High Speed Cavitation Jump to: navigation, search Basic Specifications Facility Name MHL High Speed Cavitation Overseeing Organization University of Michigan Hydrodynamics Hydrodynamic Testing Facility Type Channel Length(m) 0.8 Beam(m) 0.2 Depth(m) 0.2 Cost(per day) $2000(+ Labor/Materials) Towing Capabilities Towing Capabilities Yes Maximum Velocity(m/s) 25.9 Wavemaking Capabilities Wavemaking Capabilities None Channel/Tunnel/Flume Channel/Tunnel/Flume Yes Velocity(m/s) 25.9 Recirculating No Wind Capabilities Wind Capabilities None Control and Data Acquisition Description Custom Data Acquisition System using National Instruments hardware; system compatible with Planing Hull and Floating Beam Dynamometers Number of channels 16 Bandwidth(kHz) 20 Cameras Yes
Navigable Waters, Harbors and Navigation (Wisconsin)
Energy.gov (U.S. Department of Energy (DOE))
This statute details regulations relevant to navigable waterways and harbors. Depending on the project design of a proposed dam or hydropower structure, some of these regulations may apply.
Camera-Based signage detection and recognition for blind persons
Signage plays an important role for wayfinding and navigation to assist blind people accessing unfamiliar environments. In this paper, we present a novel camera-based approach to automatically detect and recognize restroom signage from surrounding environments. ... Keywords: blind people, navigation and wayfinding, signage detection and recognition
Shuihua Wang; Yingli Tian
Energy.gov (U.S. Department of Energy (DOE)) Indexed Site
Online Learning Center v 6.4 Online Learning Center v 6.4 User Job Aid Navigation © 2012 Department of Energy - 1 - Online Learning Center (OLC) Job Aid: Navigation Purpose The purpose of this job aid is to guide users through the step-by-step process of navigating and identifying areas of the OLC, The Department of Energy's Learning Management System (LMS) user interface, and identifying some commonly used navigation icons. Identify Areas of the User Interface Task A Navigation Tips Task B How to Access in Online Learning Center Task C Online Learning Center v 6.4 User Job Aid Navigation © 2012 Department of Energy - 2 - Online Learning Center (OLC) Task A. Identify Areas of the OLC User Interface (OLC) Top Menu: Use the Home menu options in the top menu to navigate within the Online
Photon Sciences | Construction Cameras
NLE Websites -- All DOE Office Websites (Extended Search)
NSLS-II Construction Cameras You may click either the links or the camera icons shown below to access each webcam. Note: It may take 5-20 seconds to load the webcam console. Live...
Geotracker: geospatial and temporal RSS navigation
The Web is rapidly moving towards a platform for mass collaboration in content production and consumption. Fresh content on a variety of topics, people, and places is being created and made available on the Web at breathtaking speed. Navigating the content ... Keywords: RSS, blog, geospatial tagging, multimedia
Yih-Farn Robin Chen; Giuseppe Di Fabbrizio; David Gibbon; Serban Jora; Bernard Renger; Bin Wei
Interline transfer CCD camera
An interline CCD sensing device for use in a camera system, includes an imaging area sensitive to impinging light, for generating charges corresponding to the intensity of the impinging light. Sixteen independent registers R1 - R16 sequentially receive the interline data from the imaging area, corresponding to the generated charges. Sixteen output amplifiers S1 - S16 and sixteen ports P1 - P16 for sequentially transferring the interline data, one pixel at a time, in order to supply a desired image transfer speed. The imaging area is segmented into sixteen independent imaging segments A1 - A16, each of which corresponds to one register, on output amplifier, and one output port. Each one of the imaging segments A1 - A16 includes an array of rows and columns of pixels. Each pixel includes a photogate area, an interline CCD channel area, and an anti-blooming area. The anti-blooming area is, in turn, divided into an anti-blooming barrier and an anti-blooming drain.
Prokop, M.S.; McCurnin, T.W.; Stump, C.J.; Stradling, G.L.
Property:Cameras | Open Energy Information
Property Property Edit with form History Facebook icon Twitter icon » Property:Cameras Jump to: navigation, search Property Name Cameras Property Type Text Pages using the property "Cameras" Showing 25 pages using this property. (previous 25) (next 25) 1 1.5-ft Wave Flume Facility + None 10-ft Wave Flume Facility + None 11-ft Wave Flume Facility + None 2 2-ft Flume Facility + None 3 3-ft Wave Flume Facility + None 5 5-ft Wave Flume Facility + None 6 6-ft Wave Flume Facility + None A Alden Large Flume + Yes Alden Small Flume + Yes Alden Tow Tank + Yes Alden Wave Basin + Yes B Breakwater Research Facility + None C Carderock 2-ft Variable Pressure Cavitation Water Tunnel + None Carderock 3-ft Variable Pressure Cavitation Water Tunnel + None Carderock Circulating Water Channel + None
Surveying navigation modelling approaches
Recently, a number of authors who work on web application modelling have paid attention to the ideas regarding separation of concerns that underlie aspect-orientation, as well as some ideas that come from the model-driven development community. ... Keywords: internet, navigation modelling, separation of concerns, web application modelling, web engineering, web navigation
Antonia M. Reina-Quintero
Performance comparison of streak camera recording systems
Streak camera based diagnostics are vital to the inertial confinement fusion program at Sandia National Laboratories. Performance characteristics of various readout systems coupled to an EGG-AVO streak camera were analyzed and compared to scaling estimates. The purpose of the work was to determine the limits of the streak camera performance and the optimal fielding conditions for the Amador Valley Operations (AVO) streak camera systems. The authors measured streak camera limitations in spatial resolution and sensitivity. Streak camera limits on spatial resolution are greater than 18 lp/mm at 4% contrast. However, it will be difficult to make use of any resolution greater than this because of high spatial frequency variation in the photocathode sensitivity. They have measured a signal to noise of 3,000 with 0.3 mW/cm{sup 2} of 830 nm light at a 10 ns/mm sweep speed. They have compared lens coupling systems with and without micro-channel plate intensifiers and systems using film or charge coupled device (CCD) readout. There were no conditions where film was found to be an improvement over the CCD readout. Systems utilizing a CCD readout without an intensifier have comparable resolution, for these source sizes and at a nominal cost in signal to noise of 3, over those with an intensifier. Estimates of the signal-to-noise for different light coupling methods show how performance can be improved.
Derzon, M. [Sandia National Labs., Albuquerque, NM (United States). Diagnostics and Target Experiment Dept.; Barber, T. [K-tech Corp., Albuquerque, NM (United States)
Vision based robot navigation
In this thesis we propose a vision-based robot navigation system that constructs a high level topological representation of the world. A robot using this system learns to recognize rooms and spaces by building a hidden ...
Roth, Daniel R. (Daniel Risner), 1979-
Navigating videos by location
The combination of images with geographical information has gained a lot of attention; systems like Google Street View (GSV) have become an integral part of our daily routine and uploading and sharing geotagged images becomes more and more popular. With ... Keywords: geotagging, interactive video tour, video navigation
Philip Mildner; Frederik Claus; Stephan Kopf; Wolfgang Effelsberg
Navigation drilling technology progresses
This article reports that navigation drilling - an approach that combines advanced drill bit, downhole motor, measurement-while-drilling, and well planning technology into an integrated, steerable drilling system - has reduced drilling time for operating companies worldwide. A major operating advantage of navigation drilling is the ability to drill both straight and directional intervals with a single assembly. In conventional directional drilling, a bent sub and downhole motor (or a bent housing motor) are used to initiate kick-offs and make course corrections. The bent sub is made-up above the motor, tilting the motor's axis 1 to 3 degrees compared to the axis of the drill string. The assembly toolface can be aligned in the desired direction with a single-shot, a steering tool or an MWD system.
Bayne, R.
Property:Number of Color Cameras | Open Energy Information
Color Cameras Color Cameras Jump to: navigation, search Property Name Number of Color Cameras Property Type Number Pages using the property "Number of Color Cameras" Showing 25 pages using this property. (previous 25) (next 25) A Alden Large Flume + 2 + Alden Small Flume + 2 + Alden Tow Tank + 2 + Alden Wave Basin + 2 + C Chase Tow Tank + 1 + Conte Large Flume + 5 + Conte Small Flume + 5 + D Davidson Laboratory Tow Tank + 2 + DeFrees Flume 1 + 5 + DeFrees Flume 2 + 5 + DeFrees Flume 3 + 5 + DeFrees Flume 4 + 5 + DeFrees Large Wave Basin + 5 + DeFrees Small Wave Basin + 5 + F Flood Fighting Research Facility + 1 + H Haynes Tow Tank + 6 + Haynes Wave Basin + 6 + Hinsdale Wave Basin 1 + 20 + Hinsdale Wave Basin 2 + 20 + M MIT Tow Tank + 1 + MMA Tugboat/ Barge/ Vessel + 1 +
Inland Navigation Districts and Florida Inland Navigation District Law
Inland Navigation Districts and Florida Inland Navigation District Inland Navigation Districts and Florida Inland Navigation District Law (Florida) Inland Navigation Districts and Florida Inland Navigation District Law (Florida) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Water Buying & Making Electricity Home Weatherization Program Info State Florida Program Type Siting and Permitting Provider Florida Inland Navigation District (FIND) The first part of this legislation establishes Inland Navigation Districts,
Ten-picosecond streak camera for the laser fusion program at LLL
From electro-optical systems design conference; New York, New York. USA (18 Sep 1973). The development and operation of 10-picosecond streak cameras in the LLL laser fusion program are described. In addition, modifications to two TRW Model 1-D high-speed streak cameras are discussed. The compact cameras are completely self-contained, weigh about 27 kg, and occupy about 1/6 m/sup 2/ of bench space. Power consumption is less than 10 W. (auth)
Thomas, S.W.; Carman, R.L.; Spracklen, H.R.; Tripp, G.R.; Coleman, L.W.
Combustion pinhole camera system
A pinhole camera system is described utilizing a sealed optical-purge assembly which provides optical access into a coal combustor or other energy conversion reactors. The camera system basically consists of a focused-purge pinhole optical port assembly, a conventional TV vidicon receiver, an external, variable density light filter which is coupled electronically to the vidicon automatic gain control (agc). The key component of this system is the focused-purge pinhole optical port assembly which utilizes a purging inert gas to keep debris from entering the port and a lens arrangement which transfers the pinhole to the outside of the port assembly. One additional feature of the port assembly is that it is not flush with the interior of the combustor. 2 figs.
Witte, A.B.
A pinhole camera system utilizing a sealed optical-purge assembly which provides optical access into a coal combustor or other energy conversion reactors. The camera system basically consists of a focused-purge pinhole optical port assembly, a conventional TV vidicon receiver, an external, variable density light filter which is coupled electronically to the vidicon automatic gain control (agc). The key component of this system is the focused-purge pinhole optical port assembly which utilizes a purging inert gas to keep debris from entering the port and a lens arrangement which transfers the pinhole to the outside of the port assembly. One additional feature of the port assembly is that it is not flush with the interior of the combustor.
Witte, Arvel B. (Rolling Hills, CA)
Multipurpose scintillation camera
The scintillation camera is a nonscanning instrument for displaying the distribution of radioactive isotopes. It can be used, for example, to show abnormalities in the thyroid gland with I-131, the size, shape and location of kidneys with Hg-203 Neohydrin or to locate brain tumors either with Hg-203 Neohydrin or with the new positron emitting agent, Ga-68 EDTA. For many applications, the scintillation camera has higher sensitivity than conventional isotope scanners, and will produce pictures in less time or with a smaller quantity of isotope present. Alternatively, it produces better pictures if the conventional dosage and exposure factors are retained. Because of the short exposure time, and because the scintillation camera is continuously sensitive to all areas within its field of view, it is well adapted to taking rapid sequences of still pictures or time-lapse motion pictures of subjects in which the distribution of radioactivity is changing. For example, time lapse pictures have been taken showing I-131 Rose Bengal Bengal being excreted from the liver of children with liver disease and of I-131 hippuran going through the kidneys of patients suspected of kidney disease.
Anger, H.O.
Hemispherical Laue camera
A hemispherical Laue camera comprises a crystal sample mount for positioning a sample to be analyzed at the center of sphere of a hemispherical, X-radiation sensitive film cassette, a collimator, a stationary or rotating sample mount and a set of standard spherical projection spheres. X-radiation generated from an external source is directed through the collimator to impinge onto the single crystal sample on the stationary mount. The diffracted beam is recorded on the hemispherical X-radiation sensitive film mounted inside the hemispherical film cassette in either transmission or back-reflection geometry. The distances travelled by X-radiation diffracted from the crystal to the hemispherical film are the same for all crystal planes which satisfy Bragg's Law. The recorded diffraction spots or Laue spots on the film thereby preserve both the symmetry information of the crystal structure and the relative intensities which are directly related to the relative structure factors of the crystal orientations. The diffraction pattern on the exposed film is compared with the known diffraction pattern on one of the standard spherical projection spheres for a specific crystal structure to determine the orientation of the crystal sample. By replacing the stationary sample support with a rotating sample mount, the hemispherical Laue camera can be used for crystal structure determination in a manner previously provided in conventional Debye-Scherrer cameras.
Li, James C. M. (Pittsford, NY); Chu, Sungnee G. (Rochester, NY)
Transmission electron microscope CCD camera
In order to improve the performance of a CCD camera on a high voltage electron microscope, an electron decelerator is inserted between the microscope column and the CCD. This arrangement optimizes the interaction of the electron beam with the scintillator of the CCD camera while retaining optimization of the microscope optics and of the interaction of the beam with the specimen. Changing the electron beam energy between the specimen and camera allows both to be optimized.
Downing, Kenneth H. (Lafayette, CA)
Novel interfaces for digital cameras and camera phones
Camera phones are now very common but there are some usability issues that affect their use. These can occur because the users look through the LCD to frame the image and can often miss the icons displayed around the edges that present important information ... Keywords: camera phone, luminance histogram, motion, orientation, panning, sonification, tactile
Christopher McAdam; Craig Pinkerton; Stephen A. Brewster
Automatic Adjustment of AVHRR Navigation
An automatic adjustment method of the Advanced Very High-Resolution Radiometer (AVHRR) images navigation has been developed for operational use at the Centre de Météorologic Spatiale (CMS) in Lannion, France. Selected coastal landmarks are ...
Philippe Bordes; Pascal Brunel; Anne Marsouin
Coherent infrared imaging camera (CIRIC)
New developments in 2-D, wide-bandwidth HgCdTe (MCT) and GaAs quantum-well infrared photodetectors (QWIP) coupled with Monolithic Microwave Integrated Circuit (MMIC) technology are now making focal plane array coherent infrared (IR) cameras viable. Unlike conventional IR cameras which provide only thermal data about a scene or target, a coherent camera based on optical heterodyne interferometry will also provide spectral and range information. Each pixel of the camera, consisting of a single photo-sensitive heterodyne mixer followed by an intermediate frequency amplifier and illuminated by a separate local oscillator beam, constitutes a complete optical heterodyne receiver. Applications of coherent IR cameras are numerous and include target surveillance, range detection, chemical plume evolution, monitoring stack plume emissions, and wind shear detection.
Hutchinson, D.P.; Simpson, M.L.; Bennett, C.A.; Richards, R.K.; Emery, M.S.; Crutcher, R.I.; Sitter, D.N. Jr.; Wachter, E.A.; Huston, M.A.
Neutron streak camera
Apparatus for improved sensitivity and time resolution of a neutron measurement. The detector is provided with an electrode assembly having a neutron sensitive cathode which emits relatively low energy secondary electrons. The neutron sensitive cathode has a large surface area which provides increased sensitivity by intercepting a greater number of neutrons. The cathode is also curved to compensate for differences in transit time of the neutrons emanating from the point source. The slower speeds of the secondary electrons emitted from a certain portion of the cathode are matched to the transit times of the neutrons impinging thereupon.
Wang, C.L.
Computer vision techniques for underwater navigation
Vision Techniques for Underwater Navigation A thesisand J. Amat. Positioning an underwater vehicle through imageand S. Feder. Autonomous Underwater Vehicle Navigation. MIT
Barngrover, Christopher M.
A lexicon for Camera Obscura
The camera obscura has allowed artists, scientists, and philosophers to view the world as a flat image. Two - dimensional renditions of visual reality seem to be more manageable and easier to grasp than reality itself. A ...
Rosinsky, Robert David
Development and Performance of Bechtel Nevada's Nine-Frame Camera System
Bechtel Nevada, Los Alamos Operations, has developed a high-speed, nine-frame camera system that records a sequence from a changing or dynamic scene. The system incorporates an electrostatic image tube with custom gating and deflection electrodes. The framing tube is shuttered with high-speed gating electronics, yielding frame rates of up to 5MHz. Dynamic scenes are lens-coupled to the camera, which contains a single photocathode gated on and off to control each exposure time. Deflection plates and drive electronics move the frames to different locations on the framing tube output. A single charge-coupled device (CCD) camera then records the phosphor image of all nine frames. This paper discusses setup techniques to optimize system performance. It examines two alternate philosophies for system configuration and respective performance results. We also present performance metrics for system evaluation, experimental results, and applications to four-frame cameras.
S. A. Baker; M. J. Griffith; J. L. Tybo
Adaptive navigation for autonomous robots
In many robotic exploration missions, robots have to learn specific policies that allow them to: (i) select high level goals (e.g., identify specific destinations), (ii) navigate (reach those destinations), (iii) and adapt to their environment (e.g., ... Keywords: Learning, evolution, Learning, neural networks, Learning, single agent, Robotics, adaptation
Matt Knudson; Kagan Tumer
Navigation protocols in sensor networks
We develop distributed algorithms for adaptive sensor networks that respond to directing a target through a region of space. We model this problem as an online distributed motion planning problem. Each sensor node senses values in its perception space ... Keywords: Sensor networks, motes, navigation, potential field, robotics
Qun Li; Daniela Rus
Table of Contents. Index. Search. Glossary. Favorites. Browse Sequences. Topic Comments. Recent Comments.
Practical spectral characterization of trichromatic cameras
Simple and effective geometric and radiometric calibration of camera devices has enabled the use of consumer digital cameras for HDR photography, for image based measurement and similar applications requiring a deeper understanding about the camera characteristics. ... Keywords: calibration, camera, color filter, spectral
Martin Rump; Arno Zinke; Reinhard Klein
Spatial orientation and navigation in microgravity
This chapter summarizes the spatial disorientation problems and navigation difficulties described by astronauts and cosmonauts, and relates them to research findings on orientation and navigation in humans and animals. ...
Oman, Charles M.
On communication protocols for tactical navigation assistance
Using tactical navigation systems is popular for military as well as search and rescue applications. For such applications, the significance of the tactical navigation systems arises especially when groups with the same goal move together on the terrain. ... Keywords: C-TRAMAF, Gossip-based ad hoc routing, N-Gossip, communication protocols, cross layer, digital battlefield, tactical navigation
Evren Onem; H. Birkan Yilmaz; Fatih Alagöz; Tuna Tugcu
General linear cameras : theory and applications
I present a General Linear Camera (GLC) model that unifies many previous camera models into a single representation. The GLC model describes all perspective (pinhole), orthographic, and many multiperspective (including ...
Yu, Jingyi, 1978-
Campus Security Camera Issued: April 2009
Campus Security Camera Policy Issued: April 2009 Revised: November 2009 Responsible Administrative locations on the Colorado School of Mines campus. CCTV cameras, also known as security cameras, are utilized as one tool to help enhance the security of the campus community and real property. As the campus
Combustion pinhole-camera system
A pinhole camera system is described utilizing a sealed optical-purge assembly which provides optical access into a coal combustor or other energy conversion reactors. The camera system basically consists of a focused-purge pinhole optical port assembly, a conventional TV vidicon receiver, an external, variable density light filter which is coupled electronically to the vidicon automatic gain control (agc). The key component of this system is the focused-purge pinhole optical port assembly which utilizes a purging inert gas to keep debris from entering the port and a lens arrangement which transfers the pinhole to the outside of the port assembly. One additional feature of the port assembly is that it is not flush with the interior of the combustor.
Calibration of Digital Amateur Cameras
We introduce a novel outlook on the self-calibration task, by considering images taken by a camera in motion, allowing for zooming and focusing. Apart from the complex relationship between the lens control settings and the intrinsic camera parameters, a prior off-line calibration allows to neglect the setting of focus, and to fix the principal point and aspect ratio throughout distinct views. Thus, the calibration matrix is dependent only on the zoom position. Given a fully calibrated reference view, one has only one parameter to estimate for any other view of the same scene, in order to calibrate it and to be able to perform metric reconstructions. We provide a close-form solution, and validate the reliability of the algorithm with experiments on real images. An important advantage of our method is a reduced - to one - number of critical camera configurations, associated with it. Moreover, we propose a method for computing the epipolar geometry of two views, taken from different positions and with different (spatial) resolutions; the idea is to take an appropriate third view, that is "easy" to match with the other two.
Magdalena Urbanek; Magdalena Urbanek; Radu Horaud; Radu Horaud; Peter Sturm; Peter Sturm; Projet Movi
Abstract-Homing and navigation capabilities are essential for many Autonomous Underwater Vehicle
Abstract- Homing and navigation capabilities are essential for many Autonomous Underwater Vehicle, speed bias and underwater currents affect dead-reckoning measurements. All operation need to have INTRODUCTION Actually, there is a real challenge on application of Autonomous Underwater Vehicle, particularly
Paris-Sud XI, Université de
Navigation computation in the smart cockpit
This thesis discusses the design and development of a hics. software module responsible for performing various navigation computations in the smart cockpit. The goals of decreased workload and increased situation awareness for the general aviation community are the motivating forces behind this software, the Navigation Module. The smart cockpit environment in which the Navigation Module operates is called the General Aviation Pilot Advisory and Training System (GAPATS) and was developed at Texas A&M University. The architecture of GAPATS is presented briefly followed by the functional requirements and operation of the Navigation Module. Next, an overview of the Navigation Module's software architecture is presented to describe how the object oriented methodology in C++ is used for the data abstraction in the Navigation Module. Other factors affecting the development of the Navigation Module are discussed such as the software development environment including useful tools available to the author. Next, results from pilot evaluations of GAPATS are given, noting where the data relate to the Navigation Module. These results show that the Navigation Module achieves its goal of a reduction in workload with an increase in situation awareness. Finally, recommendations are made that will improve future iterations of the Navigation Module, addressing its areas of weakness such as its database structure and flight planning abilities.
Lee, Kristopher Alex
Mini gamma camera, camera system and method of use
A gamma camera comprising essentially and in order from the front outer or gamma ray impinging surface: 1) a collimator, 2) a scintillator layer, 3) a light guide, 4) an array of position sensitive, high resolution photomultiplier tubes, and 5) printed circuitry for receipt of the output of the photomultipliers. There is also described, a system wherein the output supplied by the high resolution, position sensitive photomultipiler tubes is communicated to: a) a digitizer and b) a computer where it is processed using advanced image processing techniques and a specific algorithm to calculate the center of gravity of any abnormality observed during imaging, and c) optional image display and telecommunications ports.
Majewski, Stanislaw (Grafton, VA); Weisenberger, Andrew G. (Grafton, VA); Wojcik, Randolph F. (Yorktown, VA)
High Speed Electronics
High Speed Electronics. ... optic sampling system provides traceability for our electrical waveform measurements ... Metrology for Electronic Packaging. ...
Extreme Wind Speeds: Publications
... "Algorithms for Generating Large Sets of Synthetic Directional Wind Speed Data for Hurricane, Thunderstorm, and Synoptic Winds," NIST Technical ...
A comparative analysis of area navigation systems for general aviation
Within the next decade area navigation is to become the primary method of air navigation within the United States. There are numerous radio navigation systems that offer the capabilities of area navigation to general ...
Dodge, Steven Malcolm
Website Complexity Metrics for Measuring Navigability
In recent years, navigability has become the pivot of website designs. Existing works fall into two categories. The first is to evaluate and assess a website's navigability against a set of criteria or check list. The second is to analyse usage data ...
Yanlong Zhang; Hong Zhu; Sue Greenwood
Control and Navigation Framework for Quadrotor Helicopters
This paper presents the development of a nonlinear quadrotor simulation framework together with a nonlinear controller. The quadrotor stabilization and navigation problems are tackled using a nested loops control architecture. A nonlinear Backstepping ... Keywords: Backstepping, Gazebo, Navigation, Nonlinear control, Open dynamics engine, Quadrotor, Simulation framework
Amr Nagaty; Sajad Saeedi; Carl Thibault; Mae Seto; Howard Li
Neutron Scatter Camera for Radiaton Detection - Energy ...
Patent 7,741,613: Neutron scatter camera An instrument that will directly image the fast fission neutrons from a special nuclear material source has ...
Help:Navigation | Open Energy Information
Navigation Navigation Jump to: navigation, search When viewing any page on a MediaWiki wiki, you'll find three main navigation elements: The sidebar on the left gives you access to important pages in the wiki such as Recent changes or Upload file. At the top of the page are links (often called tabs) which relate to the page currently displayed: its associated discussion page, the version history, and-most notably-the edit link. In the top right corner you'll find user links; as an anonymous user, you'll see a link to create an account or log in (they are the same page). As a logged-in user you have a collection of personal links, including ones to your user page and preferences. Contents 1 Sidebar 1.1 Navigation 1.2 Toolbox 2 Page Tabs 3 User Links Sidebar File:M-en-sidebar.png
Drill Press Speed Chart
operating speeds (RPM) Accessory Softwood (Pine) Hardwood (Hard Maple) Acrylic Brass Aluminum Steel Shop Notes Twist drill bits 116" - 316" 14" - 38" 716"- 58" 11...
MAMI: multimodal annotations on a camera phone
We present MAMI (i.e. Multimodal Automatic Mobile Indexing), a mobile-phone prototype that allows users to annotate and search for digital photos on their camera phone via speech input. MAMI is implemented as a mobile application that runs in ... Keywords: digital image management, mobile camera phones, multimedia retrieval, speech annotations, user experience
Xavier Anguera; Nuria Oliver
Mobile camera-based user interaction
We present an approach for facilitating user interaction on mobile devices, focusing on camera-enabled mobile phones. A user interacts with an application by moving their device. An on-board camera is used to capture incoming video and the scrolling ...
Antonio Haro; Koichi Mori; Tolga Capin; Stephen Wilkinson
Applications of IR Thermography in Capturing Thermal Transients and Other High-Speed Thermal Events
DOE Green Energy (OSTI)
The high-speed, snap-shot mode, and the external triggering capability of an IR camera allows thermal transients to be captured. These advanced features were used to capture thermal transients during electrical breakdown of ZnO varistors and to freeze the rotation of an automobile disk brake in order to study thermoplastic instability in the braking system. The IR camera also showed the thermoplastic effect during cyclic fatigue testing of a glass matrix composite.
Dinwiddie, R.B.; Graham, S.; Wang, H.
Category:Navigation Templates | Open Energy Information
source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Navigation Templates Jump to: navigation, search This is a list of templates that are used for navigation on sub-sites on OpenEI. Pages in category "Navigation Templates" The following 18 pages are in this category, out of 18 total. A Template:ArizonaWindContactInfo C Template:CommunityWindHandbook D Template:DatabusNav Template:DatabusNav2 E Template:EnergyAccessNav Template:EnergyDataJamNav E cont. Template:EnergyWater H Template:HydrogenNav L Template:LEDSGPFooter Template:LEDSGPNavs Template:LEDSLACNavs Template:LEDSTAPnav S Template:Smallwindguidebook Template:SWERANav
Modeling information navigation: implications for information architecture
Previous studies for menu and Web search tasks have suggested differing advice on the optimal number of selections per page. In this article, we examine this discrepancy through the use of a computational model of information navigation that simulates ...
Craig S. Miller; Roger W. Remington
Contributions to automated realtime underwater navigation
This dissertation presents three separate-but related-contributions to the art of underwater navigation. These methods may be used in postprocessing with a human in the loop, but the overarching goal is to enhance vehicle ...
Stanway, Michael Jordan
Automatic camera tracking for remote manipulators
The problem of automatic camera tracking of mobile objects is addressed with specific reference to remote manipulators and using either fixed or mobile cameras. The technique uses a kinematic approach employing 4 x 4 coordinate transformation matrices to solve for the needed camera PAN and TILT angles. No vision feedback systems are used, as the required input data are obtained entirely from position sensors from the manipulator and the camera-positioning system. All hardware requirements are generally satisfied by currently available remote manipulator systems with a supervisory computer. The system discussed here implements linear plus on/off (bang-bang) closed-loop control with a +-2-deg deadband. The deadband area is desirable to avoid operator seasickness caused by continuous camera movement. Programming considerations for camera control, including operator interface options, are discussed. The example problem presented is based on an actual implementation using a PDP 11/34 computer, a TeleOperator Systems SM-229 manipulator, and an Oak Ridge National Laboratory (ORNL) camera-positioning system. 3 references, 6 figures, 2 tables.
Stoughton, R.S.; Martin, H.L.; Bentz, R.R.
The problem of automatic camera tracking of mobile objects is addressed with specific reference to remote manipulators and using either fixed or mobile cameras. The technique uses a kinematic approach employing 4 x 4 coordinate transformation matrices to solve for the needed camera PAN and TILT angles. No vision feedback systems are used, as the required input data are obtained entirely from position sensors from the manipulator and the camera-positioning system. All hardware requirements are generally satisfied by currently available remote manipulator systems with a supervisory computer. The system discussed here implements linear plus on/off (bang-bang) closed-loop control with a +-2/sup 0/ deadband. The deadband area is desirable to avoid operator seasickness caused by continuous camera movement. Programming considerations for camera control, including operator interface options, are discussed. The example problem presented is based on an actual implementation using a PDP 11/34 computer, a TeleOperator Systems SM-229 manipulator, and an Oak Ridge National Laboratory (ORNL) camera-positioning system. 3 references, 6 figures, 2 tables.
Where should i turn: moving from individual to collaborative navigation strategies to inform the interaction design of future navigation systems
The design of in-vehicle navigation systems fails to take into account the social nature of driving and automobile navigation. In this paper, we consider navigation as a social activity among drivers and navigators to improve design of such systems. ... Keywords: gps systems, in-car navigation, interaction design
Jodi Forlizzi; William C. Barley; Thomas Seder
California high speed rail proposal: "High speed rail and wildlife"
Wildlife and High Speed Rail C ALIFORNIA H IGH S PEED R AILLeavitt, California High Speed Rail Authority) Abstract TheCalifornia High Speed Rail (HSR) Proposal is in the initial
Wilkerson, Cynthia
General aviation Omega navigation in the national airspace system
Introduction: Omega navigation has great potential as a navigation sensor for general aviation aircraft. Advantages of Omega navigation include signal availability at all altitudes, and no need for overflying of various ...
Wischmeyer, Carl Edward
Full Hybrid: Low Speed
Alternative Fuels and Advanced Vehicles Data Center (EERE)
highlighted Cruising button Passing button Braking button Stopped button highlighted Cruising button Passing button Braking button Stopped button LOW SPEED For initial acceleration and slow-speed driving, as well as reverse, the electric motor uses electricity from the battery to power the vehicle. If the battery needs to be recharged, the generator starts the engine and converts energy from the engine into electricity, which is stored in the battery. stage graphic: vertical blue rule Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. The car is moving at a low speed. There are arrows flowing from the battery to the electric motor to the power split device to the front wheels. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. The car is moving at a low speed. There are arrows flowing from the battery to the electric motor to the power split device to the front wheels.
High-Speed Biomass Recalcitrance Pipeline Speeds Up Bio ...
High-Speed Biomass Recalcitrance Pipeline Speeds Up Bio-Mass Analysis Robotic pipeline allows for rapid analysis of optimal substrate/enzyme ...
Ex Parte Meeting with DOE and Navigant Consulting on Battery...
Ex Parte Meeting with DOE and Navigant Consulting on Battery Charger Energy Ex Parte Meeting with DOE and Navigant Consulting on Battery Charger Energy Ex parte guidance for...
Agencies You are here Home Ex Parte Meeting with DOE and Navigant Consulting on Battery Charger Energy Ex Parte Meeting with DOE and Navigant Consulting on Battery Charger...
Vacuum compatible miniature CCD camera head
A charge-coupled device (CCD) camera head which can replace film for digital imaging of visible light, ultraviolet radiation, and soft to penetrating x-rays, such as within a target chamber where laser produced plasmas are studied. The camera head is small, capable of operating both in and out of a vacuum environment, and is versatile. The CCD camera head uses PC boards with an internal heat sink connected to the chassis for heat dissipation, which allows for close(0.04" for example) stacking of the PC boards. Integration of this CCD camera head into existing instrumentation provides a substantial enhancement of diagnostic capabilities for studying high energy density plasmas, for a variety of military industrial, and medical imaging applications.
Conder, Alan D. (Tracy, CA)
Underwater Camera Calibration Using Wavelength Triangulation
In underwater imagery, the image formation process includes refractions that occur when light passes from water into the camera housing, typically through a flat glass port. We extend the existing work on physical refraction models by considering the ...
Timothy Yau, Minglun Gong, Yee-Hong Yang
File:CV WindSpeed.pdf | Open Energy Information
WindSpeed.pdf WindSpeed.pdf Jump to: navigation, search File File history File usage Cape Verde-Map Summarizing Average Wind Speed (m/s) Size of this preview: 776 × 600 pixels. Full resolution (1,650 × 1,275 pixels, file size: 246 KB, MIME type: application/pdf) Description Cape Verde-Map Summarizing Average Wind Speed (m/s) Sources ECOWAS Creation Date 2011/11/14 Coordinates 16.002082°, -24.013197° File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 11:43, 14 November 2011 Thumbnail for version as of 11:43, 14 November 2011 1,650 × 1,275 (246 KB) STobin (Talk | contribs) You cannot overwrite this file. Edit this file using an external application (See the setup instructions for more information)
Development of Video Camera for Live Working
This report is an update on the progress in the development of a small lightweight video camera for use in live work. The camera is designed to be attached to the end of an insulating tool, can be placed directly near or at the object to be observed, and can transmit the video (and audio) signal remotely to a receiver. The receiver can be located at the other end of the insulating tool (hotstick) or at any place convenient for the ...
Manhattan Project: How to Navigate this Site
Office of Scientific and Technical Information (OSTI)
HOW TO NAVIGATE THIS SITE HOW TO NAVIGATE THIS SITE Resources > Navigation There are five main topical areas on this web site: Events, People, Places, Processes, and Science. These are further divided into sub-sections, each with its own introduction. The main topical areas can be accessed by clicking on a button on the horizontal bar above. Sub-sections can be accessed by clicking on a topic in the vertical column to your left. If you would like to begin with a quick survey of the Manhattan Project, try reading, in order, the eight Event sub-section pages, beginning with Atomic Discoveries, 1890s-1939. In addition to the main topical areas, the Resources section on the above button bar provides access to a variety of resource materials, including photos, documents, maps, and published histories.
High speed flywheel
This invention relates generally to flywheels and relates more particularly to the construction of a high speed, low-mass flywheel. Flywheels with which this invention is to be compared include those constructed of circumferentially wound filaments or fibers held together by a matrix or bonding material. Flywheels of such construction are known to possess a relatively high hoop strength but a relatively low radial strength. Hoop-wound flywheels are, therefore, particularly susceptible to circumferential cracks, and the radial stress limitations of such a flywheel substantially limit its speed capabilities. It is an object of the present invention to provide a new and improved flywheel which experiences reduced radial stress at high operating speeds. Another object of the present invention is to provide flywheel whose construction allows for radial growth as flywheel speed increases while providing the necessary stiffness for transferring and maintaining kinetic energy within the flywheel. Still another object of the present invention is to provide a flywheel having concentrically-disposed component parts wherein rotation induced radial stresses at the interfaces of such component parts approach zero. Yet another object of the present invention is to provide a flywheel which is particularly well-suited for high speed applications. 5 figs.
McGrath, S.V.
High speed data compactor
A method and apparatus for suppressing from transmission, non-informational data words from a source of data words such as a video camera. Data words having values greater than a predetermined threshold are transmitted whereas data words having values less than a predetermined threshold are not transmitted but their occurrences instead are counted. Before being transmitted, the count of occurrences of invalid data words and valid data words are appended with flag digits which a receiving system decodes. The original data stream is fully reconstructable from the stream of valid data words and count of invalid data words.
Baumbaugh, Alan E. (Batavia, IL); Knickerbocker, Kelly L. (Aurora, IL)
A method and apparatus for suppressing from transmission, non-informational data words from a source of data words such as a video camera. Data words having values greater than a predetermined threshold are transmitted whereas data words having values less than a predetermined threshold are not transmitted but their occurrences instead are counted. Before being transmitted, the count of occurrences of invalid data words and valid data words are appended with flag digits which a receiving system decodes. The original data stream is fully reconstructable from the stream of valid data words and count of invalid data words. 2 figs.
Baumbaugh, A.E.; Knickerbocker, K.L.
Conceptual navigation in knowledge management environments using NavCon
This article presents conceptual navigation and NavCon, an architecture that implements this navigation in World Wide Web pages. NavCon architecture makes use of ontology as metadata to contextualize user search for information. Based on ontologies, ... Keywords: Conceptual navigation, Context-based navigation, Knowledge management, Ontology, Semantic Web
Jose Renato Villela Dantas; Pedro Porfirio Muniz Farias
SEARCH NAVIGATE REFINE PERSONALIZE SAVE SEARCH OPERATORS Search using AND, OR, NOT, and SAME (same sentence) to create logical search state- ments. Nest search operators inside parentheses. Search exact Web of Science® Quick Reference Card Search over 9,200 journals from over 45 different languages
Russell, Lynn
KDD on IVR Navigation Trees: Case Study
This article presents a case study about data mining applied in IVR's navigation trees. Using data from a Call Center, the main objective is to discover patterns with information about the phone calls. Using a specific part from this information, it ... Keywords: application algorithm, kdd, ura
Thiago T. Angélico; Thais Santos Bueno; Silvio Bortoleto; Anderson Ravanello
Navigating in a mobile XHTML application
The Internet has been a great success in the fixed world, whereas WAP (Wireless Application Protocol), the mobile Internet, has not fulfilled its promise. However, now the analysts have started to believe in a rise of the mobile Internet again. WAP 2.0, ... Keywords: WAP, XHTML mobile profile, mobile internet, mobile phones, navigation, wireless web
Anne Kaikkonen; Virpi Roto
Navigating massive data sets via local clustering
This paper introduces a scalable method for feature extraction and navigation of large data sets by means of local clustering, where clusters are modeled as overlapping neighborhoods. Under the model, intra-cluster association and external differentiation ... Keywords: association, confidence, nearest neighbor, soft clustering
Michael E. Houle
A low-bandwidth camera sensor platform with applications in smart camera networks
Smart camera networks have recently emerged as a new class of sensor network infrastructure that is capable of supporting high-power in-network signal processing and enabling a wide range of applications. In this article, we provide an exposition of ... Keywords: Camera Sensor Architecture, Wireless Sensor Networks
Phoebus Chen; Kirak Hong; Nikhil Naikal; S. Shankar Sastry; Doug Tygar; Posu Yan; Allen Y. Yang; Lung-Chung Chang; Leon Lin; Simon Wang; Edgar Lobatón; Songhwai Oh; Parvez Ahammad
Ultra-fast framing camera tube
An electronic framing camera tube features focal plane image dissection and synchronized restoration of the dissected electron line images to form two-dimensional framed images. Ultra-fast framing is performed by first streaking a two-dimensional electron image across a narrow slit, thereby dissecting the two-dimensional electron image into sequential electron line images. The dissected electron line images are then restored into a framed image by a restorer deflector operated synchronously with the dissector deflector. The number of framed images on the tube's viewing screen is equal to the number of dissecting slits in the tube. The distinguishing features of this ultra-fast framing camera tube are the focal plane dissecting slits, and the synchronously-operated restorer deflector which restores the dissected electron line images into a two-dimensional framed image. The framing camera tube can produce image frames having high spatial resolution of optical events in the sub-100 picosecond range.
Kalibjian, Ralph (1051 Batavia Ave., Livermore, CA 94550)
The FourStar Infrared Camera
The FourStar infrared camera is a 1.0-2.5 micron (JHKs) near infrared camera for the Magellan Baade 6.5m telescope at Las Campanas Observatory (Chile). It is being built by Carnegie Observatories and the Instrument Development Group at Johns Hopkins and is scheduled for completion in 2009. The instrument uses four Teledyne HAWAII-2RG arrays that produce a 10.9 x 10.9 arcmin field of view. The outstanding seeing at the Las Campanas site coupled with FourStar's high sensitivity and large field of view will enable many new survey and targeted science programs.
S. E. Persson; Robert Barkhouser; Christoph Birk; Randy Hammond; Albert Harding; E. R. Koch; J. L. Marshall; Patrick J. McCarthy; David Murphy; Joe Orndorff; Gregg Scharfstein; Stephen A. Shectman; Stephen Smee; Alan Uomoto
Forecasting Solar Wind Speeds
By explicitly taking into account effects of Alfven waves, I derive from a simple energetics argument a fundamental relation which predicts solar wind (SW) speeds in the vicinity of the earth from physical properties on the sun. Kojima et al. recently found from their observations that a ratio of surface magnetic field strength to an expansion factor of open magnetic flux tubes is a good indicator of the SW speed. I show by using the derived relation that this nice correlation is an evidence of the Alfven wave which accelerates SW in expanding flux tubes. The observations further require that fluctuation amplitudes of magnetic field lines at the surface should be almost universal in different coronal holes, which needs to be tested by future observations.
Takeru K. Suzuki
Navigating without vision: Basic and applied research
ABSTRACT: We describe some of the results of our program of basic and applied research on navigating without vision. One basic research topic that we have studied extensively is path integration, a form of navigation in which perceived self-motion is integrated over time to obtain an estimate of current posilion and orientation. In experiments on pathway completion, one test of path integration ability, we have found that subjects who are passively guided over the outbound path without vision exhibit significant errors when attempting to return to the origin but are nevertheless sensitive to turns and segment lengths in the stimulus path. We have also found no major differences in path inlegration ability among blirid and sighted populations. A model we havc developed that attributes errors in path integration to errors in encoding the stimulus path is a good beginning toward understanding path integration performance. In otber research on path integration, in which optic flow information was manipulated in addition to the proprioceptive and vestibular information of nonvisual locomotion, we havc found that optic flow is a weak input to the path integration process. In other basic research, our studies of auditory distance perception in outdoor environments show systematic underestimation oC sound source distance. Our applied research has been concerned with developing and evaluating a navigation system for the visually impaired that uses three recent technologies: the Global Positioning System, Geographic Information Systems, and virtual acouslics. Our work shows that there is considerable promise of these three technologies in allowing visually impaired individuals to navigate and learn about unfamiliar environments without the assistance of human guides. (Optoni Vis Sci 2001;78:282-289)
Jack M. Loomis; Roberta L. Klatzky; Reginald G. Golledge
High speed door assembly
This invention is comprised of a high speed door assembly, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.
Shapiro, C.
The ALS X-Ray Streak Camera: Bringing the Ultrafast and Ultrasmall into
The ALS X-Ray Streak Camera: Bringing the Ultrafast and Ultrasmall into Focus Print The ALS X-Ray Streak Camera: Bringing the Ultrafast and Ultrasmall into Focus Print Studying the world of the ultrasmall and the ultrafast is at the frontier of scientific research. Two x-ray approaches can be used for ultrafast examinations. The first entails developing sources that have short x-ray pulses such as free-electron lasers and slicing sources, which will provide the ultrafast temporal information. The other approach is to develop a detector that is fast enough to resolve the ultrafast details of the dynamical processes. ALS researchers are taking the second path but adding a spatial resolution capability; that is, they are developing a high-speed x-ray streak camera with high spatial resolution to watch, in real time, the motion of the atoms in materials. So far, a temporal resolution of 233 fs and a spatial resolution of 10 mm have been demonstrated. This is the first time that such a high temporal resolution has been combined with high spatial resolution in a streak camera.
Two-speed transaxle
Disclosed is a drive assembly (10) for an electrically powered vehicle (12). The assembly includes a transaxle (16) having a two-speed transmission (40) and a drive axle differential (46) disposed in a unitary housing assembly (38), an oil-cooled prime mover or electric motor (14) for driving the transmission input shaft (42), an adapter assembly (24) for supporting the prime mover on the transaxle housing assembly, and a hydraulic system (172) providing pressurized oil flow for cooling and lubricating the electric motor and transaxle and for operating a clutch (84) and a brake (86) in the transmission to shift between the two-speed ratios of the transmission. The adapter assembly allows the prime mover to be supported in several positions on the transaxle housing. The brake is spring-applied and locks the transmission in its low-speed ratio should the hydraulic system fail. The hydraulic system pump is driven by an electric motor (212) independent of the prime mover and transaxle.
Kalns, Ilmars (Northville, MI)
Digital Camera System on a Chip
Since the early 1990s, there has been an explosion of activity in the area of CMOS image sensors. Up until recently, the dominant and nearly only solid-state image sensor technology was the charge-coupled device (CCD). However, most microprocessors, ... Keywords: charge-coupled devices, signal processing, image sensors, CMOS, digital cameras
Eric R. Fossum
Road traffic model using distributed camera network
Traffic monitoring/prediction using a distributed camera network is presented in this paper. The activities on each road link are monitored and features are derived to identify the pattern. Then it is learnt, classified, predicted and communicated to ... Keywords: hidden Markov model, spatial interest points, spatial-temporal interest points, traffic classification, traffic prediction, traffic surveillance
S. Indu; Sankalp Arora; Santanu Chaudhury; Asok Bhattacharyya
Simultaneous Boundary Partitioning and Cameras Synchronization for
the boundary B and the periodicity T. A static variation (WDTs) of the WDT criterion in equa- tion (3) is defined in Alberton et al. (2012). In particular, WDTs(X) := max p0,t0 {t - t0 : p0 X(t), t t0}, (5 is an (open) boundary, a (periodic) cameras trajectory with minimum WDTs can be computed by optimally
Bullo, Francesco
A miniature mobile robot for navigation and positioning on the beating heart
Abstract—Robotic assistance enhances conventional endoscopy; yet, limitations have hindered its mainstream adoption for cardiac surgery. HeartLander is a miniature mobile robot that addresses several of these limitations by providing precise and stable access over the surface of the beating heart in a less-invasive manner. The robot adheres to the heart and navigates to any desired target in a semiautonomous fashion. The initial therapies considered for HeartLander generally require precise navigation to multiple surface targets for treatment. To balance speed and precision, we decompose any general target acquisition into navigation to the target region followed by fine positioning to each target. In closedchest, beating-heart animal studies, we demonstrated navigation to targets located around the circumference of the heart, as well as acquisition of target patterns on the anterior and posterior surfaces with an average error of 1.7 mm. The average drift encountered during station-keeping was 0.7 mm. These preclinical results demonstrate the feasibility of precise semiautonomous delivery of therapy to the surface of the beating heart using HeartLander. Index Terms—Beating-heart surgery, medical robotics, minimally invasive surgery, mobile robot motion planning.
Nicholas A. Patronik; Takeyoshi Ota; Marco A. Zenati; Cameron N. Riviere
High speed imaging television system
A television system for observing an event which provides a composite video output comprising the serially interlaced images the system is greater than the time resolution of any of the individual cameras.
Wilkinson, William O. (Silver Spring, MD); Rabenhorst, David W. (Silver Spring, MD)
Testing web navigation for all: an agent-based approach
Laboratory navigability testing is a powerful technique to obtain a picture of the user's mental representation of the navigation model of a web site. However, bringing volunteers to the laboratory to test our prototypes is quite expensive and even ...
Martin González; Marcos González; Cristóbal Rivera; Ignacio Pintado; Agueda Vidau
Improving program navigation with an active help system
When performing software change tasks, software developers spend a substantial amount of their time navigating dependencies in the code. Despite the availability of numerous tools to aid such navigation, there is evidence to suggest that developers are ...
Petcharat Viriyakattiyaporn; Gail C. Murphy
Right-lateralized brain oscillations in human spatial navigation
During spatial navigation, lesion and functional imaging studies suggest that the right hemisphere has a unique functional role. However, studies of direct human brain recordings have not reported interhemisphere differences in navigation-related oscillatory ...
Joshua Jacobs; Igor O. Korolev; Jeremy B. Caplan; Arne D. Ekstrom; Brian Litt; Gordon Baltuch; Itzhak Fried; Andreas Schulze-Bonhage; Joseph R. Madsen; Michael J. Kahana
A flywheel for operation at high speeds utilizes two or more ringlike coments arranged in a spaced concentric relationship for rotation about an axis and an expansion device interposed between the components for accommodating radial growth of the components resulting from flywheel operation. The expansion device engages both of the ringlike components, and the structure of the expansion device ensures that it maintains its engagement with the components. In addition to its expansion-accommodating capacity, the expansion device also maintains flywheel stiffness during flywheel operation.
McGrath, Stephen V. (Knoxville, TN)
Robust Low-Frequency Spread-Spectrum Navigation System
... reliable tracking and navigation in buildings, heavy foliage, urban terrain, caves, and underground with less interference than is currently available ...
Underwater Radiance Distributions Measured with Miniaturized Multispectral Radiance Cameras
Miniaturized radiance cameras measuring underwater multispectral radiances in all directions at high-radiometric accuracy (CE600) are presented. The camera design is described, as well as the main steps of its optical and radiometric ...
David Antoine; André Morel; Edouard Leymarie; Amel Houyou; Bernard Gentili; Stéphane Victori; Jean-Pierre Buis; Nicolas Buis; Sylvain Meunier; Marius Canini; Didier Crozel; Bertrand Fougnie; Patrice Henry
Active self-calibration of multi-camera systems
We present a method for actively calibrating a multicamera system consisting of pan-tilt zoom cameras. After a coarse initial calibration, we determine the probability of each relative pose using a probability distribution based on the camera images. ...
Marcel Brückner; Joachim Denzler
Inertial navigation system for directional surveying
A Wellbore Inertial Navigation System (WINS) was developed and tested. Developed for directional surveying of geothermal, oil, and gas wells, the system uses gyros and accelerometers to obtain survey errors of less than 10 ft (approx. 3 m) in a 10,000-ft (approx. 300-m) well. The tool, which communicates with a computer at the surface, is 4 in. (approx. 10 cm) in diameter and 20 ft (approx. 6.1 m) long. The concept and hardware is based on a system developed by Sandia for flight vehicles.
Kohler, S.M.
Simulation of Geomagnetic/Inertial Integrated Navigation System
In order to optimize the algorithm of geomagnetic/inertial integrated navigation, we establish platform of geomagnetic/inertial integrated navigation System, and study the geomagnetic matching location approach based on ICCP algorithm and MSD algorithm, ... Keywords: Geomagnetic/Inertial Integrated Navigation, Geomagnetic Matching, ICCP algorithm, MSD algorithm, Kalman filter
Zhou Yingying; Zhang Yanshun; Guo Lei
High speed transient sampler
A high speed sampler comprises a meandered sample transmission line for transmitting an input signal, a straight strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates along the transmission lines. The sampling gates comprise a four terminal diode bridge having a first strobe resistor connected from a first terminal of the bridge to the positive strobe line, a second strobe resistor coupled from the third terminal of the bridge to the negative strobe line, a tap connected to the second terminal of the bridge and to the sample transmission line, and a sample holding capacitor connected to the fourth terminal of the bridge. The resistance of the first and second strobe resistors is much higher than the signal transmission line impedance in the preferred system. This results in a sampling gate which applies a very small load on the sample transmission line and on the strobe generator. The sample holding capacitor is implemented using a smaller capacitor and a larger capacitor isolated from the smaller capacitor by resistance. The high speed sampler of the present invention is also characterized by other optimizations, including transmission line tap compensation, stepped impedance strobe line, a multi-layer physical layout, and unique strobe generator design. A plurality of banks of such samplers are controlled for concatenated or interleaved sample intervals to achieve long sample lengths or short sample spacing. 17 figs.
McEwan, T.E.
A high speed sampler comprises a meandered sample transmission line for transmitting an input signal, a straight strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates along the transmission lines. The sampling gates comprise a four terminal diode bridge having a first strobe resistor connected from a first terminal of the bridge to the positive strobe line, a second strobe resistor coupled from the third terminal of the bridge to the negative strobe line, a tap connected to the second terminal of the bridge and to the sample transmission line, and a sample holding capacitor connected to the fourth terminal of the bridge. The resistance of the first and second strobe resistors is much higher than the signal transmission line impedance in the preferred system. This results in a sampling gate which applies a very small load on the sample transmission line and on the strobe generator. The sample holding capacitor is implemented using a smaller capacitor and a larger capacitor isolated from the smaller capacitor by resistance. The high speed sampler of the present invention is also characterized by other optimizations, including transmission line tap compensation, stepped impedance strobe line, a multi-layer physical layout, and unique strobe generator design. A plurality of banks of such samplers are controlled for concatenated or interleaved sample intervals to achieve long sample lengths or short sample spacing.
McEwan, Thomas E. (Livermore, CA)
Camera setup optimization for optical tracking in virtual environments
In this paper we present a method for finding the optimal camera alignment for a tracking system with multiple cameras, by specifying the volume that should be tracked and an initial camera setup. The approach we use is twofold: on the one hand, we use ...
Philippe A. Cerfontaine; Marc Schirski; Daniel Bündgens; Torsten Kuhlen
System and software architectures of distributed smart cameras
In this article, we describe a distributed, peer-to-peer gesture recognition system along with a software architecture modeling technique and authority control protocol for ubiquitous cameras. This system performs gesture recognition in real time by ... Keywords: Distributed cameras, smart camera, software architecture
Chang Hong Lin; Marilyn Wolf; Xenefon Koutsoukos; Sandeep Neema; Janos Sztipanovits
A two-speed device is described comprising a two-part stop engageable with a follower. The two-pant stop comprises first and second members in threaded engagement with each other. The first member is restrained against rotation but is free to move longitudinally, and the second member is free to move arially and rotatively. Means are provided to impart rotation to the second member. The follower is engageable first with an end of one member and then with the corresponding end of the other member after some relative longitudinal movement of the members with respect to one another due to the rotation of the second member and the holding of the first member against rotation.
Brunson, G.S. Jr.
Many animals navigate. Some perform incredible navigational feats. Foraging desert ants of the genus
their lofts following release from very distant locations they have never before encountered (Keeton, 1974 (Nucifraga columbiana). We develop a novel hypothesis about landmark-based navigation and explore its to a landmark when the landmark is distant from the goal. On the basis of these findings, we propose
Cheng, Ken
Long wavelength infrared camera (LWIRC): a 10 micron camera for the Keck Telescope
The Long Wavelength Infrared Camera (LWIRC) is a facility instrument for the Keck Observatory designed to operate at the f/25 forward Cassegrain focus of the Keck I telescope. The camera operates over the wavelength band 7-13 {micro}m using ZnSe transmissive optics. A set of filters, a circular variable filter (CVF), and a mid-infrared polarizer are available, as are three plate scales: 0.05``, 0.10``, 0.21`` per pixel. The camera focal plane array and optics are cooled using liquid helium. The system has been refurbished with a 128 x 128 pixel Si:As detector array. The electronics readout system used to clock the array is compatible with both the hardware and software of the other Keck infrared instruments NIRC and LWS. A new pre-amplifier/A-D converter has been designed and constructed which decreases greatly the system susceptibility to noise.
Wishnow, E.H.; Danchi, W.C.; Tuthill, P.; Wurtz, R.; Jernigan, J.G.; Arens, J.F.
A Single-Camera Remote Eye Tracker Andre Meyer, Martin Bohme, Thomas Martinetz, and Erhardt Barth
-resolution camera (1280x1024 pixels), (ii) two infrared light-emitting diodes (LEDs) to either side of the camera
Engine idle speed control system
An idle speed control system is described for an internal combustion engine having a fuel delivery means for supplying fuel to the engine, the idle speed control system comprising in combination: means for controlling the fuel delivery means to supply a scheduled idle fuel quantity during a idle operating state of the engine; means for sensing the engine idle speed; integrator means responsive to the engine idle speed and a desired engine idle speed for adjusting the scheduled idle fuel quantity in direction and amount to cause correspondence between the engine idle speed and the desired engine idle speed, the integrator means adjustment being a measure of engine load conditions; and means for establishing the scheduled idle fuel quantity, the means including (A) means for establishing a family of curves as a function of the amount of integrator adjustment of the scheduled idle fuel quantity, each curve of the family of curves representing idle fuel quantity as a function of engine idle speed for a respective engine load condition, and (B) means for selecting the curve corresponding to the integrator adjustment of the scheduled idle fuel quantity and providing the scheduled fuel quantity from the selected curve in accord with the sensed engine idle speed.
Ament, F.
Energy harvesting Wheel Speed Sensor.
??This thesis presents a prototype energy harvesting autonomous sensor, called the Autonomous Wheel Speed Sensor (AWSS), that is targeted for operation in the Electronic Braking… (more)
Parthasarathy, Dhasarathy
File:QuikSCAT - Annual Wind Speed at 10 m.pdf | Open Energy Information
QuikSCAT - Annual Wind Speed at 10 m.pdf QuikSCAT - Annual Wind Speed at 10 m.pdf Jump to: navigation, search File File history File usage QuikSCAT - Annual Wind Speed at 10 m Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution (1,275 × 1,650 pixels, file size: 1.19 MB, MIME type: application/pdf) Title Annual Wind Speed at 10 m Description QuikSCAT - Annual Wind Speed at 10 m Sources NREL, National Aeronautics and Space Administration Extent International Coordinates 0°, 0° Scatterometer measurements of the state of the ocean surface are used to estimate 10-m ocean winds in the QuikSCAT satellite data set. The QuikSCAT data are produced by Remote Sensing Systems and sponsored by the U.S. National Aeronautics and Space Administration Ocean Vector Winds Science
Navigating the Numbers: Greenhouse Gas Data and International Climate
Navigating the Numbers: Greenhouse Gas Data and International Climate Navigating the Numbers: Greenhouse Gas Data and International Climate Policy Jump to: navigation, search Tool Summary Name: Navigating the Numbers: Greenhouse Gas Data and International Climate Policy Agency/Company /Organization: World Resources Institute Sector: Energy, Land Topics: Co-benefits assessment, GHG inventory, Policies/deployment programs Resource Type: Publications Website: pdf.wri.org/navigating_numbers.pdf References: Navigating the Numbers: Greenhouse Gas Data and International Climate Policy[1] Overview "This report examines greenhouse gas (GHG) emissions at the global, national, sectoral, and fuel levels and identifies implications of the data for international cooperation on global climate change. Emissions are assessed within the broader socioeconomic context faced by countries,
Slit-mounted LED fiducial system for rotating mirror streak cameras
We have developed a fiducial system for rotating mirror streak cameras that utilizes light emitting diodes mounted at the slit position of the camera. The diodes are driven to the required high brightness by a unique pulse power circuit designed to provide high voltage, high current pulses 18 nanoseconds in length at a frequency of up to 2.5 megahertz. The availability of super bright light emitting diodes with a wavelength of 630 to 640 nanometers allows us to record fiducial pulses, at streaking speeds in excess of 20mm per microsecond, on all the black and white films commonly used in high speed photography. The time marks on the film record are referenced to the real time of the experiment from a clock-driver that controls the start and frequency of the fiducial pulse train and by three adjustable and discreet blanked fiducials. This paper discusses the development of this system and describes the full setup as used at LLNL. 6 refs., 4 figs.
Shaw, L.L.; Muelder, S.A.; Rivera, A.T.
Development and Performance of the PHOT (Portable High-Speed Occultation Telescope) Systems
The PHOT (Portable High-Speed Occultation Telescope) systems were developed for the specific purpose of observing stellar occultations by solar system objects. Stellar occultations have unique observing constraints: they may only be observable from certain parts of the globe; they often require a rapid observing cadence; and they require accurate timestamp information for each exposure. The PHOT systems consist of 14" telescopes, CCD cameras, camera mounting plates, GPS-based time standards, and data acquisition computers. The PHOT systems are similar in principle to the POETS systems (Portable Occultation, Eclipse and Transit Systems, described by Souza et al. 2006 and reported on by Gulbis et al. 2008), with the main differences being (a) different CCD/Cameras with slightly different specifications and (b) a stand-alone custom-built time standard used by PHOT, whereas POETS uses a commercial time-standard that is controlled from a computer. Since 2005, PHOT systems have been deployed on over two dozen occas...
Young, E F; Olkin, C B; Shoemaker, K; French, R G; Regester, J; Buie, M W
An architecture for assisted navigation in intelligent environments
The AmbienNet project aims to demonstrate the viability of navigation systems to assist users with or without disabilities supported by intelligent environments. In particular, people with sensorial, physical or cognitive disabilities can be highly benefited ... Keywords: WSNs, ambient intelligence, assistive technology, cognitive disabilities, handheld devices, intelligent navigation, intelligent wheelchairs, location-based services, middleware, navigation assistance, people localisation, physical disabilities, wireless networks, wireless sensor networks
J. Abascal; A. Lafuente; A. Marco; J. M. Falco; R. Casas; J. L. Sevillano; D. Cascado; C. Lujan
wind speed | OpenEI
speed speed Dataset Summary Description GIS data for offshore wind speed (meters/second). Specified to Exclusive Economic Zones (EEZ).Wind resource based on NOAA blended sea winds and monthly wind speed at 30km resolution, using a 0.11 wind sheer to extrapolate 10m - 90m. Annual average >= 10 months of data, no nulls. Source National Renewable Energy Laboratory (NREL) Date Released Unknown Date Updated Unknown Keywords GIS global NOAA NREL offshore wind wind speed Data application/zip icon Download Shapefile (zip, 18.5 MiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period License License Other or unspecified, see optional comment below Comment Please cite NREL and NOAA Rate this dataset Usefulness of the metadata
Cervical SPECT Camera for Parathyroid Imaging
Primary hyperparathyroidism characterized by one or more enlarged parathyroid glands has become one of the most common endocrine diseases in the world affecting about 1 per 1000 in the United States. Standard treatment is highly invasive exploratory neck surgery called ���¢��������Parathyroidectomy���¢�������. The surgery has a notable mortality rate because of the close proximity to vital structures. The move to minimally invasive parathyroidectomy is hampered by the lack of high resolution pre-surgical imaging techniques that can accurately localize the parathyroid with respect to surrounding structures. We propose to develop a dedicated ultra-high resolution (~ 1 mm) and high sensitivity (10x conventional camera) cervical scintigraphic imaging device. It will be based on a multiple pinhole-camera SPECT system comprising a novel solid state CZT detector that offers the required performance. The overall system will be configured to fit around the neck and comfortably image a patient.
Construction in Navigable Waters (South Carolina) | Department of Energy
Construction in Navigable Waters (South Carolina) Construction in Navigable Waters (South Carolina) Construction in Navigable Waters (South Carolina) < Back Eligibility Agricultural Commercial Construction Industrial Installer/Contractor Investor-Owned Utility Local Government Municipal/Public Utility Rural Electric Cooperative Transportation Tribal Government Utility Savings Category Water Buying & Making Electricity Program Info State South Carolina Program Type Siting and Permitting Provider South Carolina Department of Health and Environmental Control This South Carolina Department of Health and Environmental Control program establishes a number of provisions regarding waters, water resources, and drainage in South Carolina. Navigable streams and rivers are declared to be common highways and "forever free". The obstruction of such waterways
Navigating the Numbers: Greenhouse Gas Data and International...
Tool Summary Name: Navigating the Numbers: Greenhouse Gas Data and International Climate Policy AgencyCompany Organization: World Resources Institute Sector: Energy, Land...
ARM - Field Campaign - IR Cloud Camera Feasibility Study
govCampaignsIR Cloud Camera Feasibility Study govCampaignsIR Cloud Camera Feasibility Study Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : IR Cloud Camera Feasibility Study 2010.12.06 - 2010.12.13 Lead Scientist : Kyle Leesman For data sets, see below. Description During December 2010, a prototype LWIR cloud camera system was deployed at the Southern Great Plains Guest Instrument Facility (SGP-GIF). The system consisted of a microbolometer camera (~7-15 ìm) to capture sky imagery, a blackbody calibration source, and a GPS receiver used to estimate atmospheric column water vapor and constrain atmospheric compensation. The camera system collected calibrated sky radiance images co-incident with the SGP Central Facility with the goal of quantitatively assessing its ability
A B-Spline Model for Camera Calibration.
??This thesis presents a general B-spline surface model for camera calibration. The model implicitly characterizes lens distortion by directly relating positions on the image plane… (more)
Xu, Yiming
Numerical wind speed simulation model
A relatively simple stochastic model for simulating wind speed time series that can be used as an alternative to time series from representative locations is described in this report. The model incorporates systematic seasonal variation of the mean wind, its standard deviation, and the correlation speeds. It also incorporates systematic diurnal variation of the mean speed and standard deviation. To demonstrate the model capabilities, simulations were made using model parameters derived from data collected at the Hanford Meteorology Station, and results of analysis of simulated and actual data were compared.
Ramsdell, J.V.; Athey, G.F.; Ballinger, M.Y.
Exploring collaborative navigation:: the effect of perspectives on group performance
In this paper, we describe a collaborative navigation task in CVE. As a work in process, we present a process model of the task and design an experiment to test hypotheses generated by this process model. Using this experimental approach, we investigated ... Keywords: CVE, awareness, egocentric-exocentric perspectives, mental model, navigation, user studies
Huahai Yang; Gary M. Olson
The connected user interface: realizing a personal situated navigation service
Navigation services can be found in different situations and contexts: while connected to the web through a desktop PC, in cars, and more recently on PDAs while on foot. These services are usually well designed for their specific purpose, but fail to ... Keywords: pedestrian navigation systems, ubiquitous interfaces
Antonio Krüger; Andreas Butz; Christian Müller; Christoph Stahl; Rainer Wasinger; Karl-Ernst Steinberg; Andreas Dirschl
Going to town: Visualized perspectives and navigation through virtual environments
Two experiments examined how spatial learning perspectives support navigation through virtual urban environments. Participants briefly learned the overall layout of a virtual desktop environment, and then were taken on a simulated journey ending at a ... Keywords: Navigation, Spatial cognition, Spatial perspectives, Spatial visualizations
Tad T. Brunyé; Aaron Gardony; Caroline R. Mahoney; Holly A. Taylor
Geometry of the HST Planetary Camera Field
We present a solution for the relative positions and orientations of the four CCD chips on the Hubble Space Telescope (HST) Planetary Camera (PC). An accurate solution is required when matching HST images with ground-based images or with one another. The solution is accurate to about 1/4 PC pixel or about $0{.\\hskip-2pt ''} 01$, a 30-fold improvement over the best previous solution. The CCDs are rotated relative to one another by up to $1^\\circ$. The solution is based on images taken between December 1990 and June 1992 and is stable over that entire period. We find that the pixel size is $0{.\\hskip-2pt ''}04373\\pm 0{.\\hskip-2pt ''}00004$ based on comparison with HST Guide Stars, in good agreement with previous Guide-Star based calibrations but $\\sim 1\\%$ smaller than a globular-cluster based calibration.
Andrew Gould; Brian Yanny
Fast Camera Imaging of Hall Thruster Ignition
Hall thrusters provide efficient space propulsion by electrostatic acceleration of ions. Rotating electron clouds in the thruster overcome the space charge limitations of other methods. Images of the thruster startup, taken with a fast camera, reveal a bright ionization period which settles into steady state operation over 50 ?s. The cathode introduces azimuthal asymmetry, which persists for about 30 ?s into the ignition. Plasma thrusters are used on satellites for repositioning, orbit correction and drag compensation. The advantage of plasma thrusters over conventional chemical thrusters is that the exhaust energies are not limited by chemical energy to about an electron volt. For xenon Hall thrusters, the ion exhaust velocity can be 15-20 km/s, compared to 5 km/s for a typical chemical thruster
C.L. Ellison, Y. Raitses and N.J. Fisch
Gould, A; Gould, Andrew; Yanny, Brian
Extraction of cloud statistics from whole sky imaging cameras
Computer codes have been developed to extract basic cloud statistics from whole sky imaging (WSI) cameras. This report documents, on an algorithmic level, the steps and processes underlying these codes. Appendices comment on code details and on how to adapt to future changes in either the source camera or the host computer.
Kegelmeyer, W.P. Jr.
The visual computing of projector-camera systems
This article focuses on real-time image correction techniques that enable projector-camera systems to display images onto screens that are not optimized for projections, such as geometrically complex, colored and textured surfaces. It reviews hardware ... Keywords: GPU rendering, image-correction, projector-camera systems, virtual and augmented reality
Oliver Bimber; Daisuke Iwai; Gordon Wetzstein; Anselm Grundhöfer
CCD Camera Calibration based on the Sun's Images
A Nikon D70s Digital camera with resolution of 6M, equipped with a narrow angle Nikkor 85 mm f/1.8D lens and suitable filters; was calibrated successfully, by two sets of the sun's images. Each set was taken while the camera's orientation was held unchanged for more than a hour. During this time the sun's image cross the camera's field of view from left to right and thirty photographs were taken at fixed known time intervals, controlled by a GPS receiver that was used as an intervalometer. The camera was held so that the sun's trajectory during the first set of images was an arc approximately at the direction of the sensor's lines. The sun's trajectory in the second set was nearly perpendicular to it. The two trajectories pass close to the sensor center. The elements of the camera's interior orientation and its tilt angles in each set of photography were determined simultaneously by least squares adjustment procedure. Due to the big number of the sun's images located in good positions, the elements in the variance-covariance matrix were small. In addition the location of the sun's image was determined accurately on the digital photograph, by an edge detection techniques. As a result the RMS values of the interior orientation parameters were small. 1.
U. Ethrog
New Camera Sheds Light on Dark Energy | Department of Energy
New Camera Sheds Light on Dark Energy New Camera Sheds Light on Dark Energy New Camera Sheds Light on Dark Energy September 18, 2012 - 3:47pm Addthis Zoomed-in image from the Dark Energy Camera of the center of the globular star cluster 47 Tucanae, which lies about 17,000 light years from Earth. | Photo by Dark Energy Survey Collaboration. Zoomed-in image from the Dark Energy Camera of the center of the globular star cluster 47 Tucanae, which lies about 17,000 light years from Earth. | Photo by Dark Energy Survey Collaboration. Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What does this project do? It is expected to discover and measure 4,000 supernovae, 100,000 galaxy clusters and 300 million galaxies. There's magic in the moment of opening one's eyes - especially for
Camera Sheds Light on Dark Energy Camera Sheds Light on Dark Energy New Camera Sheds Light on Dark Energy September 18, 2012 - 3:47pm Addthis Zoomed-in image from the Dark Energy Camera of the center of the globular star cluster 47 Tucanae, which lies about 17,000 light years from Earth. | Photo by Dark Energy Survey Collaboration. Zoomed-in image from the Dark Energy Camera of the center of the globular star cluster 47 Tucanae, which lies about 17,000 light years from Earth. | Photo by Dark Energy Survey Collaboration. Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What does this project do? It is expected to discover and measure 4,000 supernovae, 100,000 galaxy clusters and 300 million galaxies. There's magic in the moment of opening one's eyes - especially for the first time: New sights, new possibilities, even new worlds spring into
FlySPEC: a multi-user video camera system with hybrid human and automatic control
FlySPEC is a video camera system designed for real-time remote operation. A hybrid design combines the high resolution of an optomechanical video camera with the wide field of view always available from a panoramic camera. The control system integrates ... Keywords: collaborative and automatic camera control, distance learning, gesture based camera control, panoramic video, video communication, video conferencing, video production, webcams
Qiong Liu; Don Kimber; Jonathan Foote; Lynn Wilcox; John Boreczky
Speeding Up Zeolite Evaluation for Carbon Capture
Speeding Up Zeolite Evaluation for Carbon Capture Speeding Up Zeolite Evaluation for Carbon Capture Zeolite.png Schematic of an important class of porous materials known as...
In situ local shock speed and transit shock speed and T. Detman2
In situ local shock speed and transit shock speed S. Watari1 and T. Detman2 1 Communications shock observa- tions. This index is the ratio of the in situ local shock speed and the transit speed; it is 0.6±0.9 for most observed shocks. The local shock speed and the transit speed calculated
Regulation of Dams and Bridges Affecting Navigable Waters (Wisconsin) |
Dams and Bridges Affecting Navigable Waters Dams and Bridges Affecting Navigable Waters (Wisconsin) Regulation of Dams and Bridges Affecting Navigable Waters (Wisconsin) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Water Buying & Making Electricity Home Weatherization Program Info Start Date 2007 State Wisconsin Program Type Siting and Permitting Provider Department of Natural Resources Chapter 31 of the Wisconsin Statutes lays out the regulations relevant to
Cooling the dark energy camera instrument
DECam, camera for the Dark Energy Survey (DES), is undergoing general design and component testing. For an overview see DePoy, et al in these proceedings. For a description of the imager, see Cease, et al in these proceedings. The CCD instrument will be mounted at the prime focus of the CTIO Blanco 4m telescope. The instrument temperature will be 173K with a heat load of 113W. In similar applications, cooling CCD instruments at the prime focus has been accomplished by three general methods. Liquid nitrogen reservoirs have been constructed to operate in any orientation, pulse tube cryocoolers have been used when tilt angles are limited and Joule-Thompson or Stirling cryocoolers have been used with smaller heat loads. Gifford-MacMahon cooling has been used at the Cassegrain but not at the prime focus. For DES, the combined requirements of high heat load, temperature stability, low vibration, operation in any orientation, liquid nitrogen cost and limited space available led to the design of a pumped, closed loop, circulating nitrogen system. At zenith the instrument will be twelve meters above the pump/cryocooler station. This cooling system expected to have a 10,000 hour maintenance interval. This paper will describe the engineering basis including the thermal model, unbalanced forces, cooldown time, the single and two-phase flow model.
Schmitt, R.L.; Cease, H.; /Fermilab; DePoy, D.; /Ohio State U.; Diehl, H.T.; Estrada, J.; Flaugher, B.; /Fermilab; Kuhlmann, S.; /Ohio State U.; Onal, Birce; Stefanik, A.; /Fermilab
Navigating the New EnergySaver.gov | Department of Energy
Navigating the New EnergySaver.gov Navigating the New EnergySaver.gov Navigating the New EnergySaver.gov September 10, 2012 - 2:16pm Q&A What do you think about the new EnergySaver.gov? Ask Us Addthis This video shows you how to navigate the new EnergySaver.gov. Rebecca Matulka Rebecca Matulka Digital Communications Specialist, Office of Public Affairs What does this mean for me? We have updated Energy Saver's design to make it easier to find your favorite energy-saving tips and advice. A new Energy Saver feature -- Savings Projects -- include step-by-step instructions on ways to make home energy efficiency improvements. For regular readers of Energy Savers, you might have noticed something different when you visited the site today. Not only does it have an updated name and design, it also has a new feature to help you take practical
Navigation, Wayfinding, and Place Experience within a Virtual City
We report a qualitative study of navigation, wayfinding, and place experience within a virtual city. "Cityscape" is a virtual environment (VE), partially algorithmically generated and intended to be redolent of the aggregate forms of real ...
Craig D. Murray; John M. Bowers; Adrian J. West; Steve Pettifer; Simon Gibson
Flight test and evaluation of Omega navigation for general aviation
A seventy hour flight test program was accomplished to determine the suitability and accuracy of a low cost Omega navigation receiver in a general aviation aircraft. An analysis was made of signal availability in two widely ...
Hwoschinsky, Peter V.
Triply Redundant Integrated Navigation and Asset Visibility System
A quartz time, positioning, and navigation array that solves a fundamentalsensitivity problem is under development by ORNL researchers. Existing systemswith good timing stability are limited by poor motion sensitivities. In contrast, thisinvention has ...
MusicBox : navigating the space of your music
Navigating increasingly large personal music libraries is commonplace. Yet most music browsers do not enable their users to explore their collections in a guided and manipulable fashion, often requiring them to have a ...
Lillie, Anita Shen
Combining Path Integration and Remembered Landmarks When Navigating without Vision
This study investigated the interaction between remembered landmark and path integration strategies for estimating current location when walking in an environment without vision. We asked whether observers navigating without ...
Schrater, Paul R.
Polaris: A GPS-Navigated Ocean Acoustic Current Profiler
Results from an initial feasibility study to test whether Global Positioning System (GPS) navigation can be combined with more traditional acoustic methods to measure ocean current profiles are presented. A typical acoustic current profiler such ...
Kevin D. Leaman; Peter S. Vertes; Chris Rocken
INTERACTION DESIGN ISSUES FOR CAR NAVIGATION SYSTEMS Paul Curzon
of the Toyota system we studied states "Learn how to use this system and become thoroughly familiar Our study was based upon the Toyota Navigation System as installed in a Toyota Avensis hire car
Curzon, Paul
High fidelity sensor simulations for the virtual autonomous navigation environment
The Virtual Autonomous Navigation Environment (VANE) is a high-fidelity simulation environment for ground robotics. Physicsbased realism is the primary goal of the VANE. The VANE simulation incorporates realistic lighting, vehicle-terrain interaction, ...
Chris Goodin; Phillip J. Durst; Burhman Gates; Chris Cummins; Jody Priddy
Roadmap query for sensor network assisted navigation in dynamic environments
Mobile entity navigation in dynamic environments is an essential part of many mission critical applications like search and rescue and fire fighting. The dynamism of the environment necessitates the mobile entity to constantly maintain a high degree ...
Sangeeta Bhattacharya; Nuzhet Atay; Gazihan Alankus; Chenyang Lu; O. Burchan Bayazit; Gruia-Catalin Roman
Imaging sonar-aided navigation for autonomous underwater harbor surveillance
In this paper we address the problem of drift-free navigation for underwater vehicles performing harbor surveillance and ship hull inspection. Maintaining accurate localization for the duration of a mission is important ...
Johannsson, Hordur
OM-300 - MWD Geothermal Navigation Instrument Geothermal Project | Open
OM-300 - MWD Geothermal Navigation Instrument Geothermal Project OM-300 - MWD Geothermal Navigation Instrument Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title OM-300 - MWD Geothermal Navigation Instrument Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 High-Temperature Downhole MWD Tools for Directional Drilling Project Description Honeywell proposes to perform this project in three phases; Phase 1 will enhance accelerometers, magnetometers and high temperature electronic components to operate at 300C. Phase 2 will define, design and demonstrate circuit card assembly (CCA) and external packaging capable of operating in the temperature, shock, and vibration of downhole MWD tools. Phase 3 will utilize the components onto a CCA, integrate the CCA sensors into a final package for final assembly, test, and the delivery of one Prototype.
OpenEI - wind speed
NREL GIS Data: Global NREL GIS Data: Global Offshore Wind http://en.openei.org/datasets/node/869 GIS data for offshore wind speed (meters/second). Specified to Exclusive Economic Zones (EEZ).Wind resource based on NOAA blended sea winds and monthly wind speed at 30km resolution, using a 0.11 wind sheer to extrapolate 10m - 90m. Annual average >= 10 months of data, no nulls. License
Adjustable Speed Drive Industrial Applications
Electric motors are significant users of electricity in the United States. Approximately 66 percent of the total electricity in the U.S. is used by electric motors. Electronic adjustable speed drives (ASDs) can save energy, lower maintenance cost and improve product quality. By providing a variable frequency output to ac motors the speed of the motors can be controlled and matched to the process requirements. The benefits that may be derived from using ASDs are described and the type of ASDs, applications and specific case studies of ASD installations are also discussed.
Poole, J. N.
Alternative Fuels Data Center: Low-Speed Vehicle and Medium-Speed Electric
Low-Speed Vehicle and Low-Speed Vehicle and Medium-Speed Electric Vehicle (EV) Access to Roadways to someone by E-mail Share Alternative Fuels Data Center: Low-Speed Vehicle and Medium-Speed Electric Vehicle (EV) Access to Roadways on Facebook Tweet about Alternative Fuels Data Center: Low-Speed Vehicle and Medium-Speed Electric Vehicle (EV) Access to Roadways on Twitter Bookmark Alternative Fuels Data Center: Low-Speed Vehicle and Medium-Speed Electric Vehicle (EV) Access to Roadways on Google Bookmark Alternative Fuels Data Center: Low-Speed Vehicle and Medium-Speed Electric Vehicle (EV) Access to Roadways on Delicious Rank Alternative Fuels Data Center: Low-Speed Vehicle and Medium-Speed Electric Vehicle (EV) Access to Roadways on Digg Find More places to share Alternative Fuels Data Center: Low-Speed
High-Speed Optical and Electrical Measurements
High-Speed Optical and Electrical Measurements. The Optoelectronics Division provides three different services related ...
Operational experience of a large area x-ray camera for protein crystallography.
After 3 years experience of operating very large area (210mm x 210mm) CCD-based detectors at the Advanced Photon Source, operational experience is reported. Four such detectors have been built, two for Structural Biology Center (APS-1 and SBC-2), one for Basic Energy Sciences Synchrotrons Radiation Center (Gold-2) at Argonne National Laboratory's Advanced Photon Source and one for Osaka University by Oxford Instruments, for use at Spring 8 (PX-21O). The detector is specifically designed as a high resolution and fast readout camera for macromolecular crystallography. Design trade-offs for speed and size are reviewed in light of operational experience and future requirements are considered. Operational data and examples of crystallography data are presented, together with plans for more development.
Joachimiak, A.; Jorden, A. R.; Loeffen, P. W.; Naday, I.; Sanishvili, R.; Westbrook, E. M.
High Speed ADC Design Methodology
545. [11] Siqiang Fan, "High Speed ADC Design Techniques",Fan, Xin Wang, Lin Lin, Qiang Fang, Jian Liu and Albert Wang, "DesignFan, Xin Wang, Lin Lin, Qiang Fang, Jian Liu, Bin Zhao and Albert Wang, "Capacitive Interpolated Flash ADC Design
Tang, He
Predictors of Social Mobilization Speed
social mobilization, mobilization speed, demographics Acknowledgement: The authors would like to thank Anton Phillips for operational and financial support as the general manager at Langley Castle, Sunny Cheung for designing and implementing the web site software, and Wei Pan for insights and suggestions based on his experience with the Red Balloon experiment. The authors would also like to thank Roy Welsch and Frank Harrell for their help in statistical interpretation. Contact Stuart Madnick for access to the contest data. Mobilization across social networks is becoming increasingly influential, but little is known about what traits of individuals and their relationships affect their speed of mobilization between them. We ran a global social mobilization contest and recorded personal traits of the participants and those they mobilized. We examined how those traits influenced the speed of mobilization. Individuals mobilized faster when they heard about the contest directly from the contest organization, and decreased in speed when hearing from less personal source types (e.g. family vs. media). Mobilization was faster when the mobilizer and
Jeff Alstott; Stuart Madnick; Chander Velu; Jeff Alstott Stuart Madnick
Topological mapping for limited sensing mobile robots using the Probabilistic Gap Navigation Tree
This thesis proposes a novel structure for robotic navigation with minimal sensing abilities called the Probabilistic Gap Navigation Tree (PGNT). In this navigation approach, we create a topological map of the environment ...
Gordeski, Valerie
Dark energy camera to probe universe's biggest mysteries | Argonne...
journey to Earth. On Sept. 12, that ancient starlight found its way to a mountaintop in Chile, where the newly-constructed Dark Energy Camera - the most powerful sky-mapping...
Bonus -- Cameras Designed to Strengthen Nuclear Security Can...
used to detect prostate cancer. The "ProxiScan" cameras rely on cadmium-zinc-telluride (CZT) gamma-ray detection material, which is incorporated into tools to help prevent the...
A cooperative control algorithm for camera based observational systems.
Over the last several years, there has been considerable growth in camera based observation systems for a variety of safety, scientific, and recreational applications. In order to improve the effectiveness of these systems, we frequently desire the ability to increase the number of observed objects, but solving this problem is not as simple as adding more cameras. Quite often, there are economic or physical restrictions that prevent us from adding additional cameras to the system. As a result, we require methods that coordinate the tracking of objects between multiple cameras in an optimal way. In order to accomplish this goal, we present a new cooperative control algorithm for a camera based observational system. Specifically, we present a receding horizon control where we model the underlying optimal control problem as a mixed integer linear program. The benefit of this design is that we can coordinate the actions between each camera while simultaneously respecting its kinematics. In addition, we further improve the quality of our solution by coupling our algorithm with a Kalman filter. Through this integration, we not only add a predictive component to our control, but we use the uncertainty estimates provided by the filter to encourage the system to periodically observe any outliers in the observed area. This combined approach allows us to intelligently observe the entire region of interest in an effective and thorough manner.
Young, Joseph G.
Installation of a fast framing visible camera on KSTAR
Visible camera technologies have made remarkable progress in recent years, and the fast camera has proven itself to be a capable imaging diagnostic in studies of specific fusion plasma issues such as the start-up physics, plasma wall interactions, edge-localized modes, and disruptions. For the purpose of favorable visible imaging, a fast framing camera has recently been installed on the Korea Superconducting Tokamak Advanced Research (KSTAR) device. The camera uses a complementary metal-oxide semiconductor detector with a maximum resolution of 1280x1024 at 1000 frames/s (fps) and a minimum resolution of 1280x16 at 64 kfps. A 2-m-long viewport having a novel optical rail system was installed on a tangential port to view the tokamak interior. The system is fully controlled from the main control room and protected by a shutter from deposits. To verify that the camera electronics are safe from the high magnetic field and its rapid time variation, possible influences are considered theoretically and experimentally. In this work, we present the design and installation of the fast camera system on the KSTAR device with discussions on the field variation effect issues.
Chung, Jinil; Lee, Deok Kyo; Seo, Dongcheol [National Fusion Research Institute, Gwahangno 113, Daejeon 305-333 (Korea, Republic of); Choi, Myoung Choul [Korea Basic Science Institute, 804-1 Ochang, Cheongwon 363-883 (Korea, Republic of)
Dual-speed wind turbine generation
Induction generator has been used since the early development of utility-scale wind turbine generation. An induction generator is the generator of choice because of its ruggedness and low cost. With an induction generator, the operating speed of the wind turbine is limited to a narrow range (almost constant speed). Dual- speed operation can be accomplished by using an induction generator with two different sets of winding configurations or by using a dual output drive train to drive two induction generators with two different rated speeds. With single-speed operation, the wind turbine operates at different power coefficients (Cp) as the wind speed varies. Operation at maximum Cp can occur only at a single wind speed. However, if the wind speed.varies across a wider range, the operating Cp will vary significantly. Dual-speed operation has the advantage of enabling the wind turbine to operate at near maximum Cp over a wider range of wind speeds. Thus, annual energy production can be increased. The dual-speed mode may generate less energy than a variable-speed mode; nevertheless, it offers an alternative which captures more energy than single-speed operation. In this paper, dual-speed operation of a wind turbine is investigated. Annual energy production is compared between single-speed and dual-speed operation. One type of control algorithm for dual-speed operation is proposed. Some results from a dynamic simulation will be presented to show how the control algorithm works as the wind turbine is exposed to varying wind speeds.
Muljadi, E.; Butterfield, C.P. [National Renewable Energy Lab., Golden, CO (United States); Handman, D. [Flowind Corp., San Rafael, CA (United States)
Navigating the Federal Hiring Process | Department of Energy
Navigating the Federal Hiring Process Navigating the Federal Hiring Process Navigating the Federal Hiring Process September 13, 2013 8:30AM to 4:00PM EDT Registration link: CHRIS (002298/0009) $200 Course type: Classroom Course Location: DOE Headquarters, Forrestal Building, Washington, DC/ Room GH-043 Course Description: Hiring decisions are among the most important decisions an organization makes. Successful accomplishment of DOE's mission depends on the ability of managers to recruit and retain a dedicated, high-performing workforce. This workshop focuses on The importance of planning and preparation to support new supervisors in finding the right employees with the right skills for the right jobs The partnership between supervisors and human resources in relation to: long-term planning with appropriate HR and budget data
Underwater acoustic navigation with the WHOI micro-modem
Abstract — The WHOI Micro-Modem is a compact, low-power acoustic transceiver that can provide both acoustic telemetry and navigation. Its size and versatility make it ideal for integration in autonomous underwater vehicles (AUVs). The modem supports the use of both broadband and narrowband transponders for long baseline navigation systems, has a modem-to-modem ranging capability, and can be configured to provide synchronous oneway ranging, when integrated with a precision clock. This paper gives an overview of the different navigation systems supported by the Micromodem and presents the results from field tests conducted on the SeaBED AUV in deployments in Greece, the Bluefin AUV, and whale localizations in the Stellwagen Bank Marine Sanctuary. I.
Ipa Singh; Matthew Grund; Brian Bingham; Ryan Eustice; Hanumant Singh; Lee Freitag
PiCam: an ultra-thin high performance monolithic camera array
We present PiCam (Pelican Imaging Camera-Array), an ultra-thin high performance monolithic camera array, that captures light fields and synthesizes high resolution images along with a range image (scene depth) through integrated parallax detection ... Keywords: array camera, computational camera, depth map, light field, parallax detection, plenoptic acquisition, superresolution
Kartik Venkataraman, Dan Lelescu, Jacques Duparré, Andrew McMahon, Gabriel Molina, Priyam Chatterjee, Robert Mullis, Shree Nayar
Speed control with end cushion for high speed air cylinder
A high speed air cylinder in which the longitudinal movement of the piston within the air cylinder tube is controlled by pressurizing the air cylinder tube on the accelerating side of the piston and releasing pressure at a controlled rate on the decelerating side of the piston. The invention also includes a method for determining the pressure required on both the accelerating and decelerating sides of the piston to move the piston with a given load through a predetermined distance at the desired velocity, bringing the piston to rest safely without piston bounce at the end of its complete stroke. 4 figs.
Stevens, W.W.; Solbrig, C.W.
High-Speed Trains For California
ESTIMATION RESEARCH 3 SCAG: High Speed Rail Fe_aLs~ilityRail Authority, Austin, January. Transportation Research
Hall, Peter; Leavitt, Daniel; Vaca, Erin
Displacement speeds in turbulent premixed flame simulations
The theory of turbulent premixed flames is based on acharacterization of the flame as a discontinuous surface propagatingthrough the fluid. The displacement speed, defined as the local speed ofthe flame front normal to itself, relative to the unburned fluid,provides one characterization of the burning velocity. In this paper, weintroduce a geometric approach to computing displacement speed anddiscuss the efficacy of the displacement speed for characterizing aturbulent flame.
Day, Marcus S.; Shepherd, Ian G.; Bell, J.; Grcar, Joseph F.; Lijewski, Michael J.
Surfing the movie space: advanced navigation in movie-only hypermedia
Keywords: browsing and navigation, hypermedia, interactive movies, media integration and synchronization, movie structure, user interfaces
Jörg Geißler
Graph-based distributed cooperative navigation for a general multi-robot measurement model
Cooperative navigation (CN) enables a group of cooperative robots to reduce their individual navigation errors. For a general multi-robot (MR) measurement model that involves both inertial navigation data and other onboard sensor readings, taken at different ... Keywords: Filtering, information fusion, localization, multi-agent systems, navigation
Vadim Indelman; Pini Gurfil; Ehud Rivlin; Hector Rotstein
Equiangular navigation and guidance of a wheeled mobile robot based on range-only measurements
We consider the problems of a wheeled mobile robot navigation and guidance towards an unknown stationary or maneuvering target using range-only measurements. We propose and study several methods for navigation and guidance termed Equiangular Navigation ... Keywords: Guidance, Navigation, Range-only measurements, Wheeled robots
Hamid Teimoori; Andrey V. Savkin
Topological visual navigation in large environments IlPyung Park and John R. Kender
a new model for robot navigation in large unstructured environments. Our model consists of two parts. Traversing on a trajectory enables the navigator to move reliably towards a target, based on shapes formed direction follower (navigator). Previous qualitative approaches to robot navigation include: the TOUR model
Uncertainty handling in navigation services using rough and fuzzy set theory
Navigation services, such as used in cars, are widely used nowadays. Many applications, positioning technologies and techniques have been developed to make navigation systems easier to use. However current navigation systems suffer from different aspects ... Keywords: fuzzy set theory, location based services, navigation services, rough set theory, spatio-temporal objects, uncertainty
Anahid Basiri; Pouria Amirian; Adam Winstanley; Colin Kuntzsch; Monika Sester
Supporting pilgrims in navigating densely crowded religious sites
Every year, a large number of pilgrims visit Mecca in Saudi Arabia. During their stay, they perform a number of rites in and around the city. Due to large crowds forming on particular days, incidents frequently occur, where people are injured, sometimes ... Keywords: Crowd navigation, Dynamic signage, Pilgrimage, Public displays, User studies
Fathi Hamhoum; Christian Kray
Semantic Web approach to smart link generation for Web navigations
The rapid development of the Internet has led to diverse applications of accessing various Web resources, such as Web pages, XML documents, pictures and video and audio files. Intelligently discovering how these Web resources are related in order to ... Keywords: OWL, RuleML, Web navigation, XLink, semantic Web
Shang-Juh Kao; I-Ching Hsu
A Novel Five Wheeled Rover for All Terrain Navigation
This paper presents a new concept for rough terrain navigation of rovers. The proposed design has reduced number of joints and links from existing suspension concepts. The suspension mechanism is derived from planar four bar mechanism and hence we present ... Keywords: Four bar mechanism, linear programming and dynamics, singularity
Arun Kumar Singh; Arun H. Patil; Anup Kumar Saha
Integrated Short Term Navigation of a Towed Underwater Body*
Integrated Short Term Navigation of a Towed Underwater Body* G. Damy' M. Joannides2 F. LeGland3 M. An underwater body, to be called here- after the fish, is towed by a surface ship at the end of a few hundred cannot provide any position estimates of an underwater body such as a towed fish, but only position
LeGland, François
An algebraic perspective to single-transponder underwater navigation
An algebraic perspective to single-transponder underwater navigation J´er^ome Jouffroy and Johann Reger Abstract-- This paper studies the position estimation of an underwater vehicle using a single are presented to illus- trate the approach. I. INTRODUCTION As an underwater counterpart of GPS, Long Base
Aesthetics and usability of in-vehicle navigation displays
This research evaluates the aesthetics and usability of various in-vehicle electronic navigation map configurations. Study 1 adapted the aesthetics scale (Lavie and Tractinsky, 2004) to accommodate evaluations of map displays. Study 2 examined map displays ... Keywords: Aesthetics, Electronic map displays, Usability
Talia Lavie; Tal Oron-Gilad; Joachim Meyer
An Efficient Sound Source for Wide-Area RAFOS Navigation
To meet the expected need for wide-area acoustic navigation for Lagrangian studies of ocean circulation using RAFOS floats, a new and powerful sound source, a resonant pipe projector has been developed. It consists of a free-flooded open steel ...
T. Rossby; J. Ellis; D. C. Webb
Energy efficient navigation management for hybrid electric vehicles on highways
Plug-in Hybrid Electric Vehicles (PHEVs) are gaining popularity due to their economical efficiency as well as their contribution to environmental preservation. PHEVs allow the driver to use exclusively electric power for 30-50 miles of driving, and switch ... Keywords: formal model, navigation plan, plug-in hybrid vehicle
Mohammad Ashiqur Rahman, Qi Duan, Ehab Al-Shaer
Multi-agent navigation using path-based vector fields
We present an approach to multi-agent navigation, that is based on generating potential-fields from A*-paths. We will introduce and compare two algorithms: 1) a geometrical algorithm that is based on quads, and 2) an images-based algorithm. We show empirically ...
Tristan Behrens; Randolf Schärfig; Tim Winkler
Magnetically Coupled Adjustable Speed Drive Systems
Adjustable speed drive (ASD) technologies have the ability to precisely control motor sytems output and produce a numbr of benefits including energy and demand savings. This report examines the performance and cost effectiveness of a specific class of ASDs called magnetically-coupled adjustable speed drives (MC-ASD) which use the strength of a magnetic field to control the amount of torque transferred between motor and drive shaft. The MagnaDrive Adjustable Speed Coupling System uses fixed rare-earth magnets and varies the distance between rotating plates in the assembly. the PAYBACK Variable Speed Drive uses an electromagnet to control the speed of the drive
Chvala, William D.; Winiarski, David W.
Geologic mapping of tunnels using photogrammetry: Camera and target positioning
A photogrammetric method has been developed by the US Geological Survey and the US Bureau of Reclamation for the use in geologic mapping of tunnels (drifts). The method requires photographing the tunnel walls and roof with a calibrated small-format camera to obtain stereo pairs of photos which are then oriented in an analytical stereo plotter for measurement of geologic features. The method was tested in G-tunnel at Rainier Mesa on the Nevada Test Site. Calculations necessary to determine camera and target positions and problems encountered during testing were used to develop a set of generic formulas that can be applied to any tunnel. 7 figs.
Coe, J.A. [Geological Survey, Denver, CO (United States); Dueholm, K.S. [Danmarks Tekniske Hoejskole, Lyngby (Denmark). Inst. of Surveying and Photogrammetry
Energy Savings of Variable Speed Motors
This paper investigates the energy savings available by utilizing variable speed motors on pump and fan applications. Conventional control of flow or pressure in process plants is normally accomplished by throttling the various streams with control valves. Depending on the system and the actual operating conditions, this throttling may consume a considerable amount of energy. The hydraulics of different systems are investigated to generalize high energy saving applications. Typical pump characteristics at varying speeds are investigated since most performance curves are only available at a constant speed. The various types of variable speed electric motors are discussed. However, the primary variable speed system recommended is a variable frequency speed system which utilizes standard induction motors. Specific cases of centrifugal pump applications and cooling tower fan service are presented. Turndown frequencies, stream factors, and electric rates are included in the evaluation. The energy savings of a variable speed system becomes significant when flow rates vary widely and the electrical rates are high.
Fishel, F. D.
Potential ecological impacts analysis of California high speed rail
proposed California High Speed Rail project as detailed inof choosing the high speed rail modal alternative versus theand was based on high speed rail alignment data, including
Cameron, Dick; White, Mike; Stallcup, Jerre Ann; Penrod, Kristeen
Southeast high speed rail (SEHSR): a case study
transportation system. High speed rail service will provide100 – 500 miles. High speed rail in the Southeast will meanto develop a high speed rail network connecting their states
Gallagher, William
Characterization of energetic devices for thermal battery applications by high-speed photography
High-speed photography at rates of up to 20,000 images per second was used to measure these properties in thermal battery igniters and also the ignition of thermal battery itself. By synchronizing a copper vapor laser to the high-speed camera, laser-illuminated images recorded details of the performance of a component. Output characteristics of several types of hermetically-sealed igniters using a TiH{chi}/KCIO{sub 4} pyrotechnic blend were measured as a function of the particle size of the pyrotechnic fuel and the closure disc thickness. The igniters were filmed under both ambient (i.e., unconfined) and confined conditions. Recently, the function of the igniter in a cut-away section of a ``mock`` thermal battery has been filmed. Partial details of these films are discussed in this paper, and selected examples of the films will be displayed via video tape during the presentation of the paper.
Dosser, L.R. [EG and G Mound Applied Technologies, Miamisburg, OH (United States); Guidotti, R. [Sandia National Labs., Albuquerque, NM (United States)
High-speed Photography of Pyrotechnic Materials and Components with a Coppper Vapor Laser
The evaluation of the properties of energetic materials, such as burn rate and ignition energy, is of primary importance in understanding their reactions and the functioning of devices containing them. One method for recording such information is high-speed photography at rates of up to 20,000 images per second. When a copper vapor lazer is synchronized with the camera, laser-illuminated images can be recorded that detail the performance of a material or component in a manner never before possible. Recent results from high-speed photography of several pyrotechnic materials and devices will be presented. These include a pyrotechnic torch, laser ignition of high explosives, and a functioning igniter. Equilibrium chemical computations have recently been begun on the pyrotechnic torch to obtain flame compositions and temperatures. The results of these calculations, and their explanation of the change in torch function with composition, will be discussed.
Dosser, Larry R.; Reed, John W.; Stark, Margaret A.
High speed drilling research advances
This article reports that the Amoco Production Company's Tulsa Research Center is developing a High Speed Drilling System (HSDS) to improve drilling economics for both exploration and development wells. The system is targeted for areas where historically the drilling rate is less than 25 ft/hr over a large section of hole. Designed as a five-year development program, work began on the system in late 1984. A major service company is participating in the project. The objective of the HSDS project is to improve drilling efficiency by developing improvements in the basic mechanical drilling system. The HSDS approach to improved drilling economics is via the traditional routes of increasing penetration rate (ROP) and bit life, increasing hole stability and reducing trouble time.
Warren, T.M.; Canson, B.E.
High speed sampler and demultiplexer
A high speed sampling demultiplexer based on a plurality of sampler banks, each bank comprising a sample transmission line for transmitting an input signal, a strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates at respective positions along the sample transmission line for sampling the input signal in response to the strobe signal. Strobe control circuitry is coupled to the plurality of banks, and supplies a sequence of bank strobe signals to the strobe transmission lines in each of the plurality of banks, and includes circuits for controlling the timing of the bank strobe signals among the banks of samplers. Input circuitry is included for supplying the input signal to be sampled to the plurality of sample transmission lines in the respective banks. The strobe control circuitry can repetitively strobe the plurality of banks of samplers such that the banks of samplers are cycled to create a long sample length. Second tier demultiplexing circuitry is coupled to each of the samplers in the plurality of banks. The second tier demultiplexing circuitry senses the sample taken by the corresponding sampler each time the bank in which the sampler is found is strobed. A plurality of such samples can be stored by the second tier demultiplexing circuitry for later processing. Repetitive sampling with the high speed transient sampler induces an effect known as ``strobe kickout``. The sample transmission lines include structures which reduce strobe kickout to acceptable levels, generally 60 dB below the signal, by absorbing the kickout pulses before the next sampling repetition. 16 figs.
A high speed sampling demultiplexer based on a plurality of sampler banks, each bank comprising a sample transmission line for transmitting an input signal, a strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates at respective positions along the sample transmission line for sampling the input signal in response to the strobe signal. Strobe control circuitry is coupled to the plurality of banks, and supplies a sequence of bank strobe signals to the strobe transmission lines in each of the plurality of banks, and includes circuits for controlling the timing of the bank strobe signals among the banks of samplers. Input circuitry is included for supplying the input signal to be sampled to the plurality of sample transmission lines in the respective banks. The strobe control circuitry can repetitively strobe the plurality of banks of samplers such that the banks of samplers are cycled to create a long sample length. Second tier demultiplexing circuitry is coupled to each of the samplers in the plurality of banks. The second tier demultiplexing circuitry senses the sample taken by the corresponding sampler each time the bank in which the sampler is found is strobed. A plurality of such samples can be stored by the second tier demultiplexing circuitry for later processing. Repetitive sampling with the high speed transient sampler induces an effect known as "strobe kickout". The sample transmission lines include structures which reduce strobe kickout to acceptable levels, generally 60 dB below the signal, by absorbing the kickout pulses before the next sampling repetition.
Body-Tracking Camera Control for Demonstration Videos
their demonstration tasks. Author Keywords Capturing tools; camera; videos; motion tracking; Kinect; How-To; DIY ACM tutorials. How-To or DIY (Do-It-Yourself) videos demonstrate specific skills and procedures for tasks performing their tasks. Based on our reviews of popular DIY tutorial sites, there are mainly three ways
Hartmann, Björn
Characterization of imaging phone cameras using minimum description length principle
In this paper, a new Minimum Description Length (MDL) approach for the characterization of a mobile phone's color camera is presented. The use of high-order polynomials, Fourier sine series, and artificial neural networks (ANN) for solving this problem ... Keywords: artificial neural network, high-order polynomial, imaging mobile phone, minimum description length
Adrian Burian; Aki Happonen; Mihaela Cirlugea
Condenser for illuminating a ringfield camera with synchrotron emission light
The present invention relates generally to the field of condensers for collecting light from a synchrotron radiation source and directing the light into a ringfield of a lithography camera. The present invention discloses a condenser comprising collecting, processing, and imaging optics. The collecting optics are comprised of concave and convex spherical mirrors that collect the light beams. The processing optics, which receive the light beams, are comprised of flat mirrors that converge and direct the light beams into a real entrance pupil of the camera in a symmetrical pattern. In the real entrance pupil are located flat mirrors, common to the beams emitted from the preceding mirrors, for generating substantially parallel light beams and for directing the beams toward the ringfield of a camera. Finally, the imaging optics are comprised of a spherical mirror, also common to the beams emitted from the preceding mirrors, images the real entrance pupil through the resistive mask and into the virtual entrance pupil of the camera. Thus, the condenser is comprised of a plurality of beams with four mirrors corresponding to a single beam plus two common mirrors.
Sweatt, William C. (13027 Arroyo de Vista, Albuquerque, NM 87111)
The present invention relates generally to the field of condensers for collecting light from a synchrotron radiation source and directing the light into a ringfield of a lithography camera. The present invention discloses a condenser comprising collecting, processing, and imaging optics. The collecting optics are comprised of concave and convex spherical mirrors that collect the light beams. The processing optics, which receive the light beams, are comprised of flat mirrors that converge and direct the light beams into a real entrance pupil of the camera in a symmetrical pattern. In the real entrance pupil are located flat mirrors, common to the beams emitted from the preceding mirrors, for generating substantially parallel light beams and for directing the beams toward the ringfield of a camera. Finally, the imaging optics are comprised of a spherical mirror, also common to the beams emitted from the preceding mirrors, images the real entrance pupil through the resistive mask and into the virtual entrance pupil of the camera. Thus, the condenser is comprised of a plurality of beams with four mirrors corresponding to a single beam plus two common mirrors. 9 figs.
Sweatt, W.C.
Re-cinematography: improving the camera dynamics of casual video
This paper presents an approach to post-processing casually captured videos to improve apparent camera movement. Re-cinematography transforms each frame of a video such that the video better follows cinematic conventions. The approach breaks videos ... Keywords: casual video, cinematography, image stabilization
Michael L. Gleicher; Feng Liu
Comparing self-calibration methods for static cameras
Many methods have been developed in the last few years to self-calibrate cameras, but few works have addressed the comparison of such methods to provide the user with hints on the suitability of certain algorithms under particular circumstances. This ...
J. Isern González; J. Cabrera Gámez; J. D. Hernández Sosa; A. C. Domínguez Brito
The Italian Navigator Lands - Argonne's Nuclear Science and Technology
The Italian Navigator Lands The Italian Navigator Lands About Director's Welcome Organization Achievements Highlights Fact Sheets, Brochures & Other Documents Multimedia Library Visit Argonne Work with Argonne Contact us Nuclear Energy Why Nuclear Energy? Why are some people afraid of Nuclear Energy? How do nuclear reactors work? Cheaper & Safer Nuclear Energy Helping to Solve the Nuclear Waste Problem Nuclear Reactors Nuclear Reactors Early Exploration Training Reactors Basic and Applied Science Research LWR Technology Development BORAX-III lighting Arco, Idaho (Press Release) Heavy Water and Graphite Reactors Fast Reactor Technology Integral Fast Reactor Argonne Reactor Tree CP-1 70th Anniversary CP-1 70th Anniversary Argonne's Nuclear Science and Technology Legacy Argonne's Nuclear Science and Technology Legacy
Using doppler radar images to estimate aircraft navigational heading error
A yaw angle error of a motion measurement system carried on an aircraft for navigation is estimated from Doppler radar images captured using the aircraft. At least two radar pulses aimed at respectively different physical locations in a targeted area are transmitted from a radar antenna carried on the aircraft. At least two Doppler radar images that respectively correspond to the at least two transmitted radar pulses are produced. These images are used to produce an estimate of the yaw angle error.
Doerry, Armin W. (Albuquerque, NM); Jordan, Jay D. (Albuquerque, NM); Kim, Theodore J. (Albuquerque, NM)
Robust low-frequency spread-spectrum navigation system
Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.
Smith, Stephen F; Moore, James A
Active control system for high speed windmills
A pump stroke is matched to the operating speed of a high speed windmill. The windmill drives a hydraulic pump for a control. Changes in speed of a wind driven shaft open supply and exhaust valves to opposite ends of a hydraulic actuator to lengthen and shorten an oscillating arm thereby lengthening and shortening the stroke of an output pump. Diminishing wind to a stall speed causes the valves to operate the hydraulic cylinder to shorten the oscillating arm to zero. A pressure accumulator in the hydraulic system provides the force necessary to supply the hydraulic fluid under pressure to drive the actuator into and out of the zero position in response to the windmill shaft speed approaching and exceeding windmill stall speed. 4 figs.
Avery, D.E.
A pump stroke is matched to the operating speed of a high speed windmill. The windmill drives a hydraulic pump for a control. Changes in speed of a wind driven shaft open supply and exhaust valves to opposite ends of a hydraulic actuator to lengthen and shorten an oscillating arm thereby lengthening and shortening the stroke of an output pump. Diminishing wind to a stall speed causes the valves to operate the hydraulic cylinder to shorten the oscillating arm to zero. A pressure accumulator in the hydraulic system provides the force necessary to supply the hydraulic fluid under pressure to drive the actuator into and out of the zero position in response to the windmill shaft speed approaching and exceeding windmill stall speed.
Avery, Don E. (45-437 Akimala St., Honolulu, HI 96744)
New Quantum Key System Combines Speed, Distance
... a prototype high-speed quantum key distribution (QKD) system ... a theoretically unbreakable "one-time pad" encryption, transmission and decryption ...
'Dead Time' Limits Quantum Cryptography Speeds
... Not only does dead time limit the transmission rate of a message ... effects and paralyzability in high-speed quantum key distribution, New Journal of ...
Microorganisms to Speed Production of Biofuels
ORNL 2011-G00203/jcn UT-B ID 201002408 08.2011 Microorganisms to Speed Production of Biofuels Technology Summary Researchers at ORNL developed microorganisms that can ...
Optimization Online - Processor Speed Control with Thermal ...
Sep 29, 2007 ... Processor Speed Control with Thermal Constraints. Almir Mutapcic(almirm ***at** * stanford.edu) Stephen Boyd(boyd ***at*** stanford.edu)
Fluid Metrology Calibration Services - Air Speed
... National Institute of Standards and Technology provides calibration services for air speed instrumentation such as Pitot tubes, hot-wire or thermal ...
Midwest High-Speed Rail Supply Chain
... Amtrak is also in the midst of a multi-year purchase. American manufacturing gets a boost from high-speed rail investment. ...
Light Speed Invariance is a Remarkable Illusion
Though many experiments appear to have confirmed the light speed invariance postulate of special relativity theory, this postulate is actually unverified. This paper resolves this issue by first showing the manner in which an illusion of light speed invariance occurs in two-way light speed measurement in the framework of a semi-classical absolute space theory. It then demonstrates a measurable variation of the one-way speed of light, which directly invalidates the invariance postulate and confirms the existence of the preferred reference frame of the absolute space theory.
Stephan J. G. Gift
Building Technologies Office: Speed and Scale
Presentations from Track B, Speed and Scale, were presented in the following sessions: Audit Procedures Business Models (Session 1) Communication and Outreach Community Evaluation...
in this experiment using a high speed light emitting diode (LED) modulated at 40 MHz as the source, and a PIN
Landstreet, John D.
Multi-point, high-speed passive ion velocity distribution diagnostic on the Pegasus Toroidal Experiment
A passive ion temperature polychromator has been deployed on Pegasus to study power balance and non-thermal ion distributions that arise during point source helicity injection. Spectra are recorded from a 1 m F/8.6 Czerny-Turner polychromator whose output is recorded by an intensified high-speed camera. The use of high orders allows for a dispersion of 0.02 A/mm in 4th order and a bandpass of 0.14 A ({approx}13 km/s) at 3131 A in 4th order with 100 {mu}m entrance slit. The instrument temperature of the spectrometer is 15 eV. Light from the output of an image intensifier in the spectrometer focal plane is coupled to a high-speed CMOS camera. The system can accommodate up to 20 spatial points recorded at 0.5 ms time resolution. During helicity injection, stochastic magnetic fields keep T{sub e} low ({approx}100 eV) and thus low ionization impurities penetrate to the core. Under these conditions, high core ion temperatures are measured (T{sub i} Almost-Equal-To 1.2 keV, T{sub e} Almost-Equal-To 0.1 keV) using spectral lines from carbon III, nitrogen III, and boron IV.
Burke, M. G.; Fonck, R. J.; Bongard, M. W.; Schlossberg, D. J.; Winz, G. R. [Department of Engineering Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
Toying with obsolescence : Pixelvision filmmakers and the Fisher Price PXL 2000 camera
This thesis is a study of the Fisher Price PXL 2000 camera and the artists and amateurs who make films and videos with this technology. The Pixelvision camera records video onto an audiocassette; its image is low-resolution, ...
McCarty, Andrea Nina
Eyes in the Sky: Decentralized Control for the Deployment of Robotic Camera Networks
This paper presents a decentralized control strategy for positioning and orienting multiple robotic cameras to collectively monitor an environment. The cameras may have various degrees of mobility from six degrees of ...
Schwager, Mac
The ALS X-Ray Streak Camera: Bringing the Ultrafast and Ultrasmall...
The ALS X-Ray Streak Camera: Bringing the Ultrafast and Ultrasmall into Focus The ALS X-Ray Streak Camera: Bringing the Ultrafast and Ultrasmall into Focus Print Wednesday, 26...
High speed imager test station
A test station enables the performance of a solid state imager (herein called a focal plane array or FPA) to be determined at high image frame rates. A programmable waveform generator is adapted to generate clock pulses at determinable rates for clock light-induced charges from a FPA. The FPA is mounted on an imager header board for placing the imager in operable proximity to level shifters for receiving the clock pulses and outputting pulses effective to clock charge from the pixels forming the FPA. Each of the clock level shifters is driven by leading and trailing edge portions of the clock pulses to reduce power dissipation in the FPA. Analog circuits receive output charge pulses clocked from the FPA pixels. The analog circuits condition the charge pulses to cancel noise in the pulses and to determine and hold a peak value of the charge for digitizing. A high speed digitizer receives the peak signal value and outputs a digital representation of each one of the charge pulses. A video system then displays an image associated with the digital representation of the output charge pulses clocked from the FPA. In one embodiment, the FPA image is formatted to a standard video format for display on conventional video equipment. 12 figs.
Yates, G.J.; Albright, K.L.; Turko, B.T.
A test station enables the performance of a solid state imager (herein called a focal plane array or FPA) to be determined at high image frame rates. A programmable waveform generator is adapted to generate clock pulses at determinable rates for clock light-induced charges from a FPA. The FPA is mounted on an imager header board for placing the imager in operable proximity to level shifters for receiving the clock pulses and outputting pulses effective to clock charge from the pixels forming the FPA. Each of the clock level shifters is driven by leading and trailing edge portions of the clock pulses to reduce power dissipation in the FPA. Analog circuits receive output charge pulses clocked from the FPA pixels. The analog circuits condition the charge pulses to cancel noise in the pulses and to determine and hold a peak value of the charge for digitizing. A high speed digitizer receives the peak signal value and outputs a digital representation of each one of the charge pulses. A video system then displays an image associated with the digital representation of the output charge pulses clocked from the FPA. In one embodiment, the FPA image is formatted to a standard video format for display on conventional video equipment.
Yates, George J. (Santa Fe, NM); Albright, Kevin L. (Los Alamos, NM); Turko, Bojan T. (Moraga, CA)
SNIF-ACT: a cognitive model of user navigation on the world wide web
We describe the development of a computational cognitive model that explains navigation behavior on the World Wide Web. The model, called SNIF-ACT (Scent-based Navigation and Information Foraging in the ACT cognitive architecture), is motivated by Information ...
Wai-Tat Fu; Peter Pirolli
Combining multiple depth cameras and projectors for interactions on, above and between surfaces
Instrumented with multiple depth cameras and projectors, LightSpace is a small room installation designed to explore a variety of interactions and computational strategies related to interactive displays and the space that they inhabit. LightSpace cameras ... Keywords: augmented reality, depth cameras, interactive spaces, surface computing, ubiquitous computing
Andrew D. Wilson; Hrvoje Benko
Tasking networked CCTV cameras and mobile phones to identify and localize multiple people
We present a method to identify and localize people by leveraging existing CCTV camera infrastructure along with inertial sensors (accelerometer and magnetometer) within each person's mobile phones. Since a person's motion path, as observed by the camera, ... Keywords: cameras, inertial sensors, localization, person identification
Thiago Teixeira; Deokwoo Jung; Andreas Savvides
File:Tip Speed Lesson Plan.pdf | Open Energy Information
File File Edit History Facebook icon Twitter icon » File:Tip Speed Lesson Plan.pdf Jump to: navigation, search File File history File usage Metadata File:Tip Speed Lesson Plan.pdf Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Go to page 1 2 3 Go! next page → next page → Full resolution (1,275 × 1,650 pixels, file size: 180 KB, MIME type: application/pdf, 3 pages) File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 09:38, 3 January 2014 Thumbnail for version as of 09:38, 3 January 2014 1,275 × 1,650, 3 pages (180 KB) Foteri (Talk | contribs) Category:Wind for Schools Portal CurriculaCategory:Wind for Schools High School Curricula You cannot overwrite this file.
Navigating the Uncharted Waters of the New AIA Patent Law in the ...
About this Abstract. Meeting, Materials Science & Technology 2013. Symposium, Next Generation Biomaterials. Presentation Title, Navigating the Uncharted ...
Bonus -- Cameras Designed to Strengthen Nuclear Security Can Also Detect
to Strengthen Nuclear Security Can Also to Strengthen Nuclear Security Can Also Detect Cancer Bonus -- Cameras Designed to Strengthen Nuclear Security Can Also Detect Cancer November 17, 2010 - 4:02pm Addthis Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs What does this mean for me? The cameras can detect prostate cancer -- as well as cervical, colorectal and breast cancers -- and can be optimized as a surgical probe that guides the removal of cancerous tumors. Brookhaven National Laboratory (BNL) and Hybridyne Imaging Technologies, Inc. recently won the 2010 North American Frost & Sullivan Award for Technology Innovation of the Year. The award is given out each year to a company that finds a new application for a unique technology. With funding from the Energy Department's NNSA's Office of Nonproliferation and
Energy Sharing in the 2-Electron Attosecond Streak Camera
Using the recently developed concept of the 2-electron streak camera (see NJP 12, 103024 (2010)), we have studied the energy-sharing between the two ionizing electrons in single-photon double ionization of He(1s2s). We find that the most symmetric and asymmetric energy sharings correspond to different ionization dynamics with the ion's Coulomb potential significantly influencing the latter. This different dynamics for the two extreme energy sharings gives rise to different patterns in asymptotic observables and different time-delays between the emission of the two electrons. We show that the 2-electron streak camera resolves the time-delays between the emission of the two electrons for different energy sharings.
Price, H; Emmanouilidou, A
Status of the Dark Energy Survey Camera (DECam) Project
The Dark Energy Survey Collaboration has completed construction of the Dark Energy Camera (DECam), a 3 square degree, 570 Megapixel CCD camera which will be mounted on the Blanco 4-meter telescope at CTIO. DECam will be used to perform the 5000 sq. deg. Dark Energy Survey with 30% of the telescope time over a 5 year period. During the remainder of the time, and after the survey, DECam will be available as a community instrument. All components of DECam have been shipped to Chile and post-shipping checkout finished in Jan. 2012. Installation is in progress. A summary of lessons learned and an update of the performance of DECam and the status of the DECam installation and commissioning will be presented.
Flaugher, Brenna L.; Abbott, Timothy M.C.; Angstadt, Robert; Annis, Jim; Antonik, Michelle, L.; Bailey, Jim; Ballester, Otger.; Bernstein, Joseph P.; Bernstein, Rebbeca; Bonati, Marco; Bremer, Gale; /Fermilab /Cerro-Tololo InterAmerican Obs. /ANL /Texas A-M /Michigan U. /Illinois U., Urbana /Ohio State U. /University Coll. London /LBNL /SLAC /IFAE
Bonus -- Cameras Designed To Strengthen Nuclear Security Can Also Detect
To Strengthen Nuclear Security Can Also To Strengthen Nuclear Security Can Also Detect Cancer Bonus -- Cameras Designed To Strengthen Nuclear Security Can Also Detect Cancer November 17, 2010 - 4:04pm Addthis Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs What does this mean for me? Thanks to researchers from Brookhaven National Laboratory, a high-resolution gamma camera exists that can be used to detect prostate cancer. Brookhaven National Laboratory (BNL) and Hybridyne Imaging Technologies, Inc. recently won the 2010 North American Frost & Sullivan Award for Technology Innovation of the Year. The award is given out each year to a company that finds a new application for a unique technology. With funding from the Department of Energy's NNSA's Office of Nonproliferation and
Triply redundant integrated navigation and asset visibility system
Methods and apparatus are described for a navigation system. A method includes providing a global positioning system fix having a plurality of tracking parameters; providing a theater positioning system fix; monitoring the plurality of tracking parameters for predetermined conditions; and, when the predetermined conditions are met, sending a notifying signal and switching to the theater positioning system fix as a primary fix. An apparatus includes a system controller; a global positioning system receiver coupled to the system controller; a radio frequency locating receiver coupled to the system controller; and an operator interface coupled to the system controller.
Smith, Stephen F. (Loudon, TN); Moore, James A. (Powell, TN)
Wellbore inertial navigation system (WINS) software development and test results
The structure and operation of the real-time software developed for the Wellbore Inertial Navigation System (WINS) application are described. The procedure and results of a field test held in a 7000-ft well in the Nevada Test Site are discussed. Calibration and instrumentation error compensation are outlined, as are design improvement areas requiring further test and development. Notes on Kalman filtering and complete program listings of the real-time software are included in the Appendices. Reference is made to a companion document which describes the downhole instrumentation package.
Wardlaw, R. Jr.
Smith, Stephen F.; Moore, James A.
X-ray streak and framing camera techniques
This paper reviews recent developments and applications of ultrafast diagnostic techniques for x-ray measurements. These techniques, based on applications of image converter devices, are already capable of significantly important resolution capabilities. Techniques capable of time resolution in the sub-nanosecond regime are being considered. Mechanical cameras are excluded from considerations as are devices using phosphors or fluors as x-ray converters.
Coleman, L.W.; Attwood, D.T.
How do we find personal files?: the effect of OS, presentation & depth on file navigation
Folder navigation is the main way that computer users retrieve their personal files. However we know surprisingly little about navigation, particularly about how it is affected by the operating system used, the interface presentation and the folder structure. ... Keywords: files, navigation, personal information management
Ofer Bergman; Steve Whittaker; Mark Sanderson; Rafi Nachmias; Anand Ramamoorthy
Landmarke: an ad hoc deployable ubicomp infrastructure to support indoor navigation of firefighters
Indoor navigation plays a central role for the safety of firefighters. The circumstances in which a firefighting intervention occurs represent a rather complex challenge for the design of supporting technology. In this paper, we present the results of ... Keywords: Ad hoc deployment, Firefighting, Human---computer interaction, Indoor navigation, Mobile ad hoc network, Navigation, Orientation, Sensor networks, Ubiquitous computing, Wearable computing
Leonardo Ramirez; Tobias Dyrks; Jan Gerwinski; Matthias Betz; Markus Scholz; Volker Wulf
A Compact High Energy Camera for the Cherenkov Telescope Array
The Compact High Energy Camera (CHEC) is a camera-development project involving UK, US, Japanese and Dutch institutes for the dual-mirror Small-Sized Telescopes (SST-2M) of the Cherenkov Telescope Array (CTA). Two CHEC prototypes, based on different photosensors are funded and will be assembled and tested in the UK over the next ~18 months. CHEC is designed to record flashes of Cherenkov light lasting from a few to a hundred nanoseconds, with typical RMS image width and length of ~0.2 x 1.0 degrees, and has a 9 degree field of view. The physical camera geometry is dictated by the telescope optics: a curved focal surface with radius of curvature 1m and diameter ~35cm is required. CHEC is designed to work with both the ASTRI and GATE SST-2M telescope structures and will include an internal LED flasher system for calibration. The first CHEC prototype will be based on multi-anode photomultipliers (MAPMs) and the second on silicon photomultipliers (SiPMs or MPPCs). The first prototype will soon be installed on the...
Daniel, M K; Berge, D; Buckley, J; Chadwick, P M; Cotter, G; Funk, S; Greenshaw, T; Hidaka, N; Hinton, J; Lapington, J; Markoff, S; Moore, P; Nolan, S; Ohm, S; Okumura, A; Ross, D; Sapozhnikov, L; Schmoll, J; Sutcliffe, P; Sykes, J; Tajima, H; Varner, G S; Vandenbroucke, J; Vink, J; Williams, D
Camera assembly design proposal for SRF cavity image collection
This project seeks to collect images from the inside of a superconducting radio frequency (SRF) large grain niobium cavity during vertical testing. These images will provide information on multipacting and other phenomena occurring in the SRF cavity during these tests. Multipacting, a process that involves an electron buildup in the cavity and concurrent loss of RF power, is thought to be occurring near the cathode in the SRF structure. Images of electron emission in the structure will help diagnose the source of multipacting in the cavity. Multipacting sources may be eliminated with an alteration of geometric or resonant conditions in the SRF structure. Other phenomena, including unexplained light emissions previously discovered at SLAC, may be present in the cavity. In order to effectively capture images of these events during testing, a camera assembly needs to be installed to the bottom of the RF structure. The SRF assembly operates under extreme environmental conditions: it is kept in a dewar in a bath of 2K liquid helium during these tests, is pumped down to ultra-high vacuum, and is subjected to RF voltages. Because of this, the camera needs to exist as a separate assembly attached to the bottom of the cavity. The design of the camera is constrained by a number of factors that are discussed.
Tuozzolo, S.
Crosswell Imaging Technology & Advanced DSR Navigation for Horizontal Directional Drilling
The objective of Phase II is to develop and demonstrate real-time measurement-while-drilling (MWD) for guidance and navigation of drill strings during horizontal drilling operations applicable to both short and long holes. The end product of Phase II is a functional drill-string assembly outfitted with a commercial version of Drill String Radar (DSR). Project Objectives Develop and demonstrate a dual-phase methodology of in-seam drilling, imaging, and structure confirmation. This methodology, illustrated in Figure 1, includes: (1) Using RIM to image between drill holes for seam thickness estimates and in-seam structures detection. Completed, February 2005; and (2) Using DSR for real-time MWD guidance and navigation of drillstrings during horizontal drilling operations. Completed, November 2008. As of November 2008, the Phase II portion of Contract DE-FC26-04NT42085 is about 99% complete, including milestones and tasks original outlined as Phase II work. The one percent deficiency results from MSHA-related approvals which have yet to be granted (at the time of reporting). These approvals are pending and are do not negatively impact the scope of work or project objectives.
Larry Stolarczyk
Situations exist around the Savannah River Site (SRS) and the Department of Energy (DOE) complex where it is advantageous to remotely navigate vertical pipe arrays. Specific examples are waste tanks in the SRS Tank Farms, which contain horizontal cooling coils at the tank bottom, vertical cooling coils throughout and a limited number of access points or ''risers''. These factors limit accessibility to many parts of these tanks by conventional means. Pipe Traveler technology has been developed to address these issues. The Pipe Traveler addresses these issues by using the vertical cooling coils as its medium of travel. The unit operates by grabbing a pipe using dual grippers located on either side of the equipment. Once securely attached to the pipe a drive wheel is extended to come in contact with the pipe. Rotation of the drive wheel causes the unit to rotate around the pipe. This action is continued until the second set of grippers is aligned with the next pipe. Extension pistons are actuated to extend the second set of grippers in contact with a second pipe. The second set of grippers is then actuated to grasp the pipe. The first set of grippers releases the original pipe and the process is repeated until the unit reaches its desired location. Once at the tool deployment location the desired tool may be used. The current design has proven the concept of pipe-to-pipe navigation. Testing of the Pipe Traveler has proven its ability to transfer itself from one pipe to another.
Krementz, D.; Immel, D.; Vrettos, N.; Nance, T.; Marzolf, A.
Enrollment Management Systems Page 1 To upload a syllabus to a class, navigate to Online Grading. To navigate to Online Grading from the
Grading. To navigate to Online Grading from the student search, select the applications tab in the navigation bar at the top of the screen. Select Online Grading. Once you enter Online Grading, you will see icon will appear next to the class you have added a syllabus to. Keep in mind that the syllabus is term
Palmeri, Thomas
Speeding Up Speeding Up Zeolite Evaluation for Carbon Capture Speeding Up Zeolite Evaluation for Carbon Capture Zeolite.png Schematic of an important class of porous materials known as zeolites. The large red structure in the center of this periodic structure is a cavity that might be a good candidate for adsorption of a gas such as carbon dioxide. The seven small red areas at the corners (plus the one hidden by the yellow ball) are not suitable and need to be eliminated from studies that attempt to predict guest-related properties using molecular simulation techniques. A new method developed at NERSC uses software to differentiate between suitable and unsuitable pockets, thereby speeding up discovery of new materials. Why it Matters: Capturing and sequestering waste carbon dioxide (CO2) is a
High-Speed Rail Comes to London
airlines have invested in rail? ? A C C E S S NUMBER 19,struction of the Channel Tunnel Rail Link, Stage Two—the UK'of a debate about high-speed rail transportation, spurred by
Hall, Sir Peter
The invariance of the speed of light
We show that the conclusion of a recent experiment [arXiv:0912.3934] that claims to have discovered that "the speed of light seems to depend on the motion of the observer" is wrong.
Jerrold Franklin
Quantifying hurricane wind speed with undersea sound
Hurricanes, powerful storms with wind speeds that can exceed 80 m/s, are one of the most destructive natural disasters known to man. While current satellite technology has made it possible to effectively detect and track ...
Wilson, Joshua David
Capacity-Speed Relationships in Prefrontal Cortex
Working memory (WM) capacity and WM processing speed are simple cognitive measures that underlie human performance in complex processes such as reasoning and language comprehension. These cognitive measures have shown to ...
Prabhakaran, Vivek
The Autocorrelation of Hourly Wind Speed Observations
The autocorrelation of hourly wind speed observations is estimated for seven stations on the west coast of Canada at selected lags ranging from one hour to two months. The estimated autocorrelation function is fitted by a model that includes a ...
Arthur C. Brett; Stanton E. Tuller
From Selection to Award - Successfully Navigating the Negotiations Process
From Selection to Award - From Selection to Award - Successfully Navigating the Negotiations Process Brad Poston November 19, 2009 American Recovery & Reinvestment Act (ARRA) of 2009  These awards are funded by the ARRA  There are special clauses and requirements  Spending and progress will be posted regularly:  http://www.energy.gov/recovery and at http://www.recovery.gov/  Awardee must report project status and job creation narrative and number on a quarterly basis at  www.federalreporting.gov 1. Cover Page 2. Attachments 1, Terms, Objective, Budget, Reporting Technical Evaluation (Review & Recommend Budget & Schedule) Cyber Security Data Reporting Deliverables Budget Reasonableness Required Forms & Certifications for Award 1. Forms 2. Deliverables
Orthogonally referenced integrated ensemble for navigation and timing
An orthogonally referenced integrated ensemble for navigation and timing includes a dual-polyhedral oscillator array, including an outer sensing array of oscillators and an inner clock array of oscillators situated inside the outer sensing array. The outer sensing array includes a first pair of sensing oscillators situated along a first axis of the outer sensing array, a second pair of sensing oscillators situated along a second axis of the outer sensing array, and a third pair of sensing oscillators situated along a third axis of the outer sensing array. The inner clock array of oscillators includes a first pair of clock oscillators situated along a first axis of the inner clock array, a second pair of clock oscillators situated along a second axis of the inner clock array, and a third pair of clock oscillators situated along a third axis of the inner clock array.
Smith, Stephen Fulton; Moore, James Anthony
Speed control system for an access gate
An access control apparatus for an access gate. The access gate typically has a rotator that is configured to rotate around a rotator axis at a first variable speed in a forward direction. The access control apparatus may include a transmission that typically has an input element that is operatively connected to the rotator. The input element is generally configured to rotate at an input speed that is proportional to the first variable speed. The transmission typically also has an output element that has an output speed that is higher than the input speed. The input element and the output element may rotate around a common transmission axis. A retardation mechanism may be employed. The retardation mechanism is typically configured to rotate around a retardation mechanism axis. Generally the retardation mechanism is operatively connected to the output element of the transmission and is configured to retard motion of the access gate in the forward direction when the first variable speed is above a control-limit speed. In many embodiments the transmission axis and the retardation mechanism axis are substantially co-axial. Some embodiments include a freewheel/catch mechanism that has an input connection that is operatively connected to the rotator. The input connection may be configured to engage an output connection when the rotator is rotated at the first variable speed in a forward direction and configured for substantially unrestricted rotation when the rotator is rotated in a reverse direction opposite the forward direction. The input element of the transmission is typically operatively connected to the output connection of the freewheel/catch mechanism.
Bzorgi, Fariborz M. (Knoxville, TN)
Combination of Speed Stroke Grinding and High Speed Grinding with Regard to Sustainability
Speed Grinding with Regard to Sustainability B. Linke 1 , M.for Manufacturing and Sustainability (LMAS) at UC Berkeley,leads to high process sustainability. Furthermore, lower
Linke, Barbara; M. Duscha; F. Klocke; Dornfeld, David
Display and interaction real-estate is fundamentally limited by the size of the screen in traditional display devices. Projection-based interfaces allow interaction with appropriated, everyday, passive surfaces. Instead of restricting interaction to a single rectangle, projection-based augmented reality makes interaction ubiquitous, taking the computer out of the box. Extending interaction to almost any surface enables new possibilities in a host of new domains, including entertainment, consumer electronics, advertising, medicine and many more. Overlaying virtual elements onto complex physical surfaces under real-world conditions, presents a variety of challenges, many which are open research problems. A wealth of previous work has focused on projection onto constrained surfaces like planes, parabolic curves, etc. In this research, we explore projection onto arbitrarily complex physical surfaces. We describe a complete, practical approach embodied in a projector-camera system. Our system is constructed of low-cost, commodity hardware and demonstrates some of the exciting applications of Spatial Augmented Reality. We present a novel initial homography estimation for interactive projector-camera calibration. We introduce a unique hybrid projector pattern codification technique for improved correspondences. Finally, we present interactive surface particles, which are a surface independent content representation that enables reusable interaction
Brett R. Jones
Parallel phase-sensitive three-dimensional imaging camera
An apparatus is disclosed for generating a three-dimensional (3-D) image of a scene illuminated by a pulsed light source (e.g. a laser or light-emitting diode). The apparatus, referred to as a phase-sensitive 3-D imaging camera utilizes a two-dimensional (2-D) array of photodetectors to receive light that is reflected or scattered from the scene and processes an electrical output signal from each photodetector in the 2-D array in parallel using multiple modulators, each having inputs of the photodetector output signal and a reference signal, with the reference signal provided to each modulator having a different phase delay. The output from each modulator is provided to a computational unit which can be used to generate intensity and range information for use in generating a 3-D image of the scene. The 3-D camera is capable of generating a 3-D image using a single pulse of light, or alternately can be used to generate subsequent 3-D images with each additional pulse of light.
Smithpeter, Colin L. (Albuquerque, NM); Hoover, Eddie R. (Sandia Park, NM); Pain, Bedabrata (Los Angeles, CA); Hancock, Bruce R. (Altadena, CA); Nellums, Robert O. (Albuquerque, NM)
Flying Triangulation - towards the 3D movie camera
Flying Triangulation sensors enable a free-hand and motion-robust 3D data acquisition of complex shaped objects. The measurement principle is based on a multi-line light-sectioning approach and uses sophisticated algorithms for real-time registration (S. Ettl et al., Appl. Opt. 51 (2012) 281-289). As "single-shot principle", light sectioning enables the option to get surface data from one single camera exposure. But there is a drawback: A pixel-dense measurement is not possible because of fundamental information-theoretical reasons. By "pixel-dense" we understand that each pixel displays individually measured distance information, neither interpolated from its neighbour pixels nor using lateral context information. Hence, for monomodal single-shot principles, the 3D data generated from one 2D raw image display a significantly lower space-bandwidth than the camera permits. This is the price one must pay for motion robustness. Currently, our sensors project about 10 lines (each with 1000 pixels), reaching an co...
Willomitzer, Florian; Faber, Christian; Häusler, Gerd
Speeding Up Science Data Transfers Between Department of Energy...
Speeding Up Science Data Transfers Between Department of Energy Facilities Speeding Up Science Data Transfers Between Department of Energy Facilities May 16, 2009 As scientists...
A 3-level autonomous mobile robot navigation system designed by using reasoning/search approaches
This paper describes how soft computing methodologies such as fuzzy logic, genetic algorithms and the Dempster-Shafer theory of evidence can be applied in a mobile robot navigation system. The navigation system that is considered has three navigation ... Keywords: Backstepping algorithm, Dynamic model of mobile robot, Fuzzy logic, Genetic algorithm, Hybrid position controller, Local minima problem, Map building, Path planning, Pruning of relevant obstacles
Jasmin Velagic; Bakir Lacevic; Branislava Perunicic
Alternative Fuels Data Center: Low-Speed Vehicle Definition
Low-Speed Vehicle Low-Speed Vehicle Definition to someone by E-mail Share Alternative Fuels Data Center: Low-Speed Vehicle Definition on Facebook Tweet about Alternative Fuels Data Center: Low-Speed Vehicle Definition on Twitter Bookmark Alternative Fuels Data Center: Low-Speed Vehicle Definition on Google Bookmark Alternative Fuels Data Center: Low-Speed Vehicle Definition on Delicious Rank Alternative Fuels Data Center: Low-Speed Vehicle Definition on Digg Find More places to share Alternative Fuels Data Center: Low-Speed Vehicle Definition on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Low-Speed Vehicle Definition A low-speed vehicle is defined as a limited use automobile or truck that has a maximum speed greater than 20 miles per hour (mph) but not more than
Production of benthic macroinvertebrates in a river used for commercial navigation :Kanawha River, West Virginia.
?? The purpose of this study was to analyze the production of the benthic macroinvertebrates in a commercially navigated river in order to assess the… (more)
Layton, Raymond Jay
The cost-effectiveness of computer-assisted navigation in total knee arthroplasty
B, Picard F, Leitner F. Computer assisted knee replacement.Breitenfelder J, Ottersbach A. Computer-assisted navigation25. Holt G, Gregori AG. Computer assisted knee arthroplasty
Novak, Erik J.; Silverstein, Marc D.; Bozic, Kevin J.
Virtual Long Baseline (VLBL) autonomous underwater vehicle navigation using a single transponder .
??This thesis presents a simulation of autonomous underwater vehicle navigation using a single transponder to create a virtual long baseline (VLBL). Similarly to LBL systems,… (more)
LaPointe, Cara E. G.
Camera cleaning study for Automatic Milking System utilizing steam at DeLaval International AB.
?? The VMS is a robot milking system of DeLaval International AB. It has been observed that a layer of residue remains on the camera… (more)
Jongschaap, Tiemen
Demo: visual mimo based LED - camera communication applied to automobile safety
The inherent limitations in RF spectrum availability and susceptibility to interference make it difficult to meet the reliability required for automotive safety applications. To address this challenge, this work explores an alternative communication system called Visual MIMO that uses light emitting arrays as transmitters and cameras as receivers. Visual MIMO applied to vehicular communication proposes to reuse existing LED rear and headlights as transmitters and existing cameras (e.g. those used for parking assistance, rear-view cameras) as receivers. In this work we show a proof of concept based demonstration of the Visual MIMO system consisting of an LED transmitter array and a highspeed camera.
Michael Varga; Ashwin Ashok; Marco Gruteser; Narayan M; Wenjia Yuan; Kristin Dana
Integration of Infrared Camera in Arcam A2 System for Feedback ...
The DDM technologies that fabricate from powder metal systems hold promise to ... The IR camera is also used as a quality control tool to detect and correct ...
New radiochromic film densitometry system using commercially available digital camera and LEDs.
??This project involved designing and building a radiochromic film (RCF) densitometer using a still digital camera as the light detector and light emitting diode, LED,… (more)
Tran, T
Ultra Fast X-ray Streak Camera for TIM Based Platforms
Ultra fast x-ray streak cameras are a staple for time resolved x-ray measurements. There is a need for a ten inch manipulator (TIM) based streak camera that can be fielded in a newer large scale laser facility. The LLNL ultra fast streak camera's drive electronics have been upgraded and redesigned to fit inside a TIM tube. The camera also has a new user interface that allows for remote control and data acquisition. The system has been outfitted with a new sensor package that gives the user more operational awareness and control.
Marley, E; Shepherd, R; Fulkerson, E S; James, L; Emig, J; Norman, D
Ultra fast x-ray streak camera for ten inch manipulator based platforms
Ultra fast x-ray streak cameras are a staple for time resolved x-ray measurements. There is a need for a ten inch manipulator (TIM) based streak camera that can be fielded in a newer large scale laser facility. The Lawrence Livermore National Laboratory ultra fast streak camera's drive electronics have been upgraded and redesigned to fit inside a TIM tube. The camera also has a new user interface that allows for remote control and data acquisition. The system has been outfitted with a new sensor package that gives the user more operational awareness and control.
Marley, E. V. [Physics and Life Science, Lawrence Livermore National Laboratory, M.S. L-490, Livermore, California 94550 (United States); University of California Davis, One Shields Avenue, Davis, California 95616 (United States); Shepherd, R.; Fulkerson, S.; James, L.; Emig, J.; Norman, D. [Physics and Life Science, Lawrence Livermore National Laboratory, M.S. L-490, Livermore, California 94550 (United States)
Measure Guideline: Replacing Single-Speed Pool Pumps with Variable Speed Pumps for Energy Savings
The report evaluates potential energy savings by replacing traditional single-speed pool pumps with variable speed pool pumps, and provide a basic cost comparison between continued uses of traditional pumps verses new pumps. A simple step-by-step process for inspecting the pool area and installing a new pool pump follows.
Hunt, A.; Easley, S.
Variable speed operation of generators with rotor-speed feedback in wind power applications
The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable-speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable-speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy we analyze uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. in extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.
Muljadi, E.; Butterfield, C.P.; Migliore, P.
Laminar flame speeds of moist syngas mixtures
This work experimentally investigates the effect of the presence of water vapor on the laminar flame speeds of moist syngas/air mixtures using the counterflow twin-flame configuration. The experimental results presented here are for fuel lean syngas mixtures with molar percentage of hydrogen in the hydrogen and carbon monoxide mixture varying from 5% to 100%, for an unburned mixture temperature of 323 K, and under atmospheric pressure. At a given equivalence ratio, the effect of varying amount of water vapor addition on the measured laminar flame speed is demonstrated. The experimental laminar flame speeds are also compared with computed values using chemical kinetic mechanisms reported in the literature. It is found that laminar flame speed varies non-monotonically with addition of water for the carbon monoxide rich mixtures. It first increases with increasing amount of water addition, reaches a maximum value, and then decreases. An integrated reaction path analysis is further conducted to understand the controlling mechanism responsible for the non-monotonic variation in laminar flame speed due to water addition. On the other hand, for higher values of H{sub 2}/CO ratio the laminar flame speed monotonically decreases with increasing water addition. It is shown that the competition between the chemical and thermal effects of water addition leads to the observed response. Furthermore, reaction rate sensitivity analysis as well as binary diffusion coefficient sensitivity analysis are conducted to identify the possible sources of discrepancy between the experimental and predicted values. The sensitivity results indicate that the reaction rate constant of H{sub 2}+OH = H{sub 2}O+H is worth revisiting and refinement of binary diffusion coefficient data of N{sub 2}-H{sub 2}O, N{sub 2}-H{sub 2}, and H{sub 2}-H{sub 2}O pairs can be considered. (author)
Das, Apurba K. [Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106 (United States); Kumar, Kamal; Sung, Chih-Jen [Department of Mechanical Engineering, University of Connecticut, Storrs, CT 06269 (United States)
Centrifugal compressor surge and speed control
Abstract—Previous work on stabilization of compressor surge is extended to include control of the angular velocity of the compressor. First a low-order centrifugal compressor model is presented where the states are mass flow, pressure rise, and rotational speed of the spool. Energy transfer considerations are used to develop a compressor characteristic. In order to stabilize equilibria to the left of the surge line, a close coupled valve is used in series with the compressor. Controllers for the valve pressure drop and spool speed are derived. Semiglobal exponential stability is proved using a Lyapunov argument. Index Terms — Compressors, Lyapunov methods, modeling, surge control.
Jan Tommy Gravdahl; Olav Egel
Gas Slit Camera (GSC) onboard MAXI on ISS
The Gas Slit Camera (GSC) is an X-ray instrument on the MAXI (Monitor of All-sky X-ray Image) mission on the International Space Station. It is designed to scan the entire sky every 92-minute orbital period in the 2--30 keV band and to achieve the highest sensitivity among the X-ray all-sky monitors ever flown so far. The GSC employs large-area position-sensitive proportional counters with the total detector area of 5350 cm$^2$. The on-board data processor has functions to format telemetry data as well as to control the high voltage of the proportional counters to protect them from the particle irradiation. The paper describes the instruments, on-board data processing, telemetry data formats, and performance specifications expected from the ground calibration tests.
Mihara, Tatehiro; Sugizaki, Mutsumi; Serino, Motoko; Matsuoka, Masaru; Kohama, Mitsuhiro; Kawasaki, Kazuyoshi; Tomida, Hiroshi; Ueno, Shiro; Kawai, Nobuyuki; Kataoka, Jun; Morii, Mikio; Yoshida, Atsumasa; Yamaoka, Kazutaka; Nakahira, Satoshi; Negoro, Hitoshi; Isobe, Naoki; Yamauchi, Makoto; Sakurai, Ikuya
How to Measure a Camera's Response Curve from Scratch
This paper describes how the response curve of a video camera can be determined with the aid of a sheet of paper and two desk lamps only. The calibration process is based on the superposition law of incoherent light and does not make use of any calibrated measurement instrument. 1 Introduction Digitizing and processing of video images has steadily gained importance in recent years. Various applications profit from this technique, in particular industrial inspection, optical measuring, desktop publishing, and remote sensing. For applications which are sensitive to image quality an exact characterization of the properties of the data acquisition equipment is essential. Knowing the equipment's response curve is especially important because many applications either rely on a linear response curve or on a specific power law (fl-correction). Relying on the data sheets of the measurement equipment is only partially useful because 1. The data is often missing (e.g. for the digitizer). 2. The ...
Martin Bichsel; Krystyna W. Ohnesorge
Call Forwarding: New NIST Procedure Could Speed Cell ...
Call Forwarding: New NIST Procedure Could Speed Cell Phone Testing. For Immediate Release: March 2, 2010. ...
NIST Measurement Advance Could Speed Innovation in Solar ...
NIST Measurement Advance Could Speed Innovation in Solar Devices. From NIST Tech Beat: July 25, 2012. ...
Dynamic simulation of dual-speed wind turbine generation
Induction generators have been used since the early development of utility-scale wind turbine generation. An induction generator is the generator of choice because of its ruggedness, and low cost. With an induction generator, the operating speed of the wind turbine is limited to a narrow range (almost constant speed). Dual- speed operation can be accomplished by using an induction generator with two different sets of winding configurations or by using two induction generators with two different rated speeds. With single- speed operation, the wind turbine operates at different power coefficients (Cp) as the wind speed varies. The operation at maximum Cp can occur only at a single wind speed. However, if the wind speed varies across a wider range, the operating Cp will vary significantly. Dual-speed operation has the advantage of enabling the wind turbine to operate at near maximum Cp over a wider range of wind-speeds. Thus, annual energy production can be increased. The dual-speed mode may generate less energy than a variable-speed mode; nevertheless, it offers an alternative to capture more energy than single-speed operation. In this paper, dual-speed operation of a wind turbine will be investigated. One type of control algorithm for dual- speed operation is proposed. Results from a dynamic simulation will be presented to show how the control algorithm works and how power, current and torque of the system vary as the wind turbine is exposed to varying wind speeds.
Muljadi, E.; Butterfield, C.P.
Modelling and forecasting wind speed intensity for weather risk management
The main interest of the wind speed modelling is on the short-term forecast of wind speed intensity and direction. Recently, its relationship with electricity production by wind farms has been studied. In fact, electricity producers are interested in ... Keywords: ARFIMA-FIGARCH, Auto Regressive Gamma, Gamma Auto Regressive, Weather risk management, Wind speed modelling, Wind speed simulation
Massimiliano Caporin; Juliusz Pre
Alternative Fuels Data Center: Limited Speed Vehicle Access to Roadways
Limited Speed Vehicle Limited Speed Vehicle Access to Roadways to someone by E-mail Share Alternative Fuels Data Center: Limited Speed Vehicle Access to Roadways on Facebook Tweet about Alternative Fuels Data Center: Limited Speed Vehicle Access to Roadways on Twitter Bookmark Alternative Fuels Data Center: Limited Speed Vehicle Access to Roadways on Google Bookmark Alternative Fuels Data Center: Limited Speed Vehicle Access to Roadways on Delicious Rank Alternative Fuels Data Center: Limited Speed Vehicle Access to Roadways on Digg Find More places to share Alternative Fuels Data Center: Limited Speed Vehicle Access to Roadways on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Limited Speed Vehicle Access to Roadways A limited speed vehicle is defined as a vehicle that is capable of
Alternative Fuels Data Center: Low-Speed Vehicle Inspection Exemption
Low-Speed Vehicle Low-Speed Vehicle Inspection Exemption to someone by E-mail Share Alternative Fuels Data Center: Low-Speed Vehicle Inspection Exemption on Facebook Tweet about Alternative Fuels Data Center: Low-Speed Vehicle Inspection Exemption on Twitter Bookmark Alternative Fuels Data Center: Low-Speed Vehicle Inspection Exemption on Google Bookmark Alternative Fuels Data Center: Low-Speed Vehicle Inspection Exemption on Delicious Rank Alternative Fuels Data Center: Low-Speed Vehicle Inspection Exemption on Digg Find More places to share Alternative Fuels Data Center: Low-Speed Vehicle Inspection Exemption on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Low-Speed Vehicle Inspection Exemption Low-speed vehicles are exempt from annual state vehicle inspections.
Detour : Los Angeles River Speed Cinema
We live in the culture of speed; everything is on its way to become a faster version of itself tomorrow if it is not already there today. Automobile and cinema are two inventions at the turn of the 20th Century that brought ...
Lee, Weifeng Victoria
Airfoil shape for flight at subsonic speeds
An airfoil having an upper surface shaped to control flow accelerations and pressure distribution over the upper surface and to prevent separation of the boundary layer due to shock wave formulation at high subsonic speeds well above the critical Mach number. A highly cambered trailing edge section improves overall airfoil lifting efficiency.
Whitcomb, Richard T. (Hampton, VA)
A mapping and localization framework for scalable appearance-based navigation
This paper presents a vision framework which enables feature-oriented appearance-based navigation in large outdoor environments containing other moving objects. The framework is based on a hybrid topological-geometrical environment representation, constructed ... Keywords: Appearance-based navigation, Point transfer, Structure from motion, Visual tracking
Siniša Šegvi?; Anthony Remazeilles; Albert Diosi; François Chaumette
Efficiency of Techniques for Mixed-Space Collaborative Navigation Aaron Stafford Bruce H. Thomas Wayne Piekarski
Efficiency of Techniques for Mixed-Space Collaborative Navigation Aaron Stafford Bruce H. Thomas consuming to remotely navigate a person using only voice commands. e-mail: email@example.com e desktop collaborative virtual environments. Virtual Reality, 7(3-4):164Â174, Jun 2004. [4] A. Stafford, W
Thomas, Bruce
Current technologies and trends in the development of gyros used in navigation applications: a review
This paper is a study of the present sensors accuracy, of the current state of miniaturization and of the current technology options available for inertial sensors and integrated Inertial Navigation Systems (INS). This paper will attempt to explore the ... Keywords: applications, gyros, inertial navigation, technology
I. R. Edu; R. Obreja; T. L. Grigorie
Super-feet: a wireless hand-free navigation system for virtual environments
Navigation is a fundamental task in virtual environments. Some of the metaphors that are used to determine where users want to be placed at each moment are based on physical locomotion. Usually, these techniques require the use of several sensors and ... Keywords: navigation in virtual environments, user interface events, virtual reality ergonomics
Beatriz Rey; Jose A. Lozano; Mariano Alcańiz; Luciano Gamberini; Merche Calvet; Daniel Kerrigan; Francesco Martino
Usability tests for improvement of 3D navigation in multiscale environments
The interest in virtual 3D environments has increased in the past years due to the popularization of the technology and the huge human ability to visually convey and grasp information. However, unlike the real world, 3D navigation, especially in multiscale ... Keywords: 3D navigation, cubemap, multiscale environments, usability
Tathiane Mendonça Andrade; Daniel Ribeiro Trindade; Eduardo Ribeiro Silva; Alberto Barbosa Raposo; Simone Diniz Junqueira Barbosa
Motion planning of inspection robot suspended on overhead ground wires for obstacle-navigation
The purpose of inspection robot for power transmission lines is to check running state and find damages of extra-high voltage (EHV) power transmission lines equipment. The key of the control design is how to design a robot for obstacles navigation. This ... Keywords: centroid adjustment, inspection robot, obstacles navigation automatically, power transmission line
Ren Zhi-Bin; Ruan Yi; Li Zheng; Yang Yong
Integration of infrastructure based positioning systems and inertial navigation for ubiquitous context-aware engineering applications
This paper presents research that investigated and implemented a hybrid integrated location tracking framework that was developed by integrating infrastructure based positioning systems and inertial navigation. The authors implemented this research by ... Keywords: Context-aware applications, Facilities management, Indoor tracking, Inertial navigation, Mobile computing, Ubiquitous tracking
Manu Akula; Suyang Dong; Vineet R. Kamat; Lauro Ojeda; Adam Borrell; Johann Borenstein
Robot navigation in very cluttered environments by preference-based fuzzy behaviors
One of the key challenges in application of Autonomous Ground Vehicles (AGVs) is navigation in environments that are densely cluttered with obstacles. The control task becomes more complex when the configuration of obstacles is not known a priori. The ... Keywords: Cluttered environment, Preference-based fuzzy behaviors, Robot navigation
Majura F. Selekwa; Damion D. Dunlap; Dongqing Shi; Emmanuel G. Collins, Jr.
This issue of Briefings focuses on one essential element of all airports. Navigation
This issue of Briefings focuses on one essential element of all airports. Navigation aids navigational facilities that provide combined azimuth and glide slope guidance to a runway (pre- cision) and those that do not (nonprecision). Nonprecision refers to facilities without a glide slope and does
Minnesota, University of
GRR/Section 13-FD-c - Navigable Water Evaluation Process | Open Energy
c - Navigable Water Evaluation Process c - Navigable Water Evaluation Process < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 13-FD-c - Navigable Water Evaluation Process 13FDCNavigableWatersEvaluationProcess (2).pdf Click to View Fullscreen Contact Agencies Federal Emergency Management Agency US Army Corps of Engineers United States Environmental Protection Agency Regulations & Policies Bridges over Navigable Waters Act 33 CFR 115.50 Application for bridge permits Marine Protection Research and Sanctuaries Act Rivers and Harbors Act of 1899 Triggers None specified Click "Edit With Form" above to add content 13FDCNavigableWatersEvaluationProcess (2).pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range.
Comparing the Usefulness of Video and Map Information In Navigation Tasks
One of the fundamental aspects of robot teleoperation is the ability to successfully navigate a robot through an environment. We define successful navigation to mean that the robot minimizes collisions and arrives at the destination in a timely manner. Often video and map information is presented to a robot operator to aid in navigation tasks. This paper addresses the usefulness of map and video information in a navigation task by comparing a side-by-side (2D) representation and an integrated (3D) representation in both a simulated and a real world study. The results suggest that sometimes video is more helpful than a map and other times a map is more helpful than video. From a design perspective, an integrated representation seems to help navigation more than placing map and video side-by-side.
Curtis W. Nielsen; Michael A. Goodrich
A multiple camera system with real-time volume reconstruction for articulated skeleton pose tracking
We present a multi-camera system for recovering skeleton body pose, by performing real-time volume reconstruction and using a hierarchical stochastic pose search algorithm. Different from many multicamera systems that require a few connected workstations, ... Keywords: multi-camera system, pose estimation, real-time volume reconstruction
Zheng Zhang; Hock Soon Seah; Chee Kwang Quah; Alex Ong; Khalid Jabbar
Long-term underwater camera surveillance for monitoring and analysis of fish populations
Long-term underwater camera surveillance for monitoring and analysis of fish populations Bastiaan J Laboratories, Taiwan Abstract Long-term monitoring of the underwater environ- ment is still labour intensive work. Using underwater surveillance cameras to monitor this environment has the potential advantage
Fisher, Bob
An image tracking system for PTZ cameras Using OpenCV
In this paper, we implement a real-time surveillance system for image object tracking using PTZ (Pan-Tilt-Zoom) cameras. For this, we use the mean shift tracking algorithm based on the color image distribution of detected object. Mean shift algorithm ... Keywords: PTZ camera, image object tracking, mean shift algorithm, openCV
Sang Gu Lee
Digital neighborhood watch: investigating the sharing of camera data amongst neighbors
In a neighborhood watch group, neighbors cooperate to prevent crime by sharing information and alerting police of suspicious activities. We propose a digital neighborhood watch (DNW) in which security cameras of individual homes work together to monitor ... Keywords: neighborhood, privacy, security camera, sensing technology
A.J. Bernheim Brush; Jaeyeon Jung; Ratul Mahajan; Frank Martinez
Sensorcam: an energy-efficient smart wireless camera for environmental monitoring
Reducing energy cost is crucial for energy-constrained smart wireless cameras. Existing platforms impose two main challenges: First, most commercial smart phones have a closed platform, which makes it impossible to manage low-level circuits. Since the ... Keywords: energy profile, environmental monitoring, smart wireless camera, video coding
Zichong Chen; Paolo Prandoni; Guillermo Barrenetxea; Martin Vetterli
Kinect in the kitchen: testing depth camera interactions in practical home environments
Depth cameras have become a fixture of millions of living rooms thanks to the Microsoft Kinect. Yet to be seen is whether they can succeed as widely in other areas of the home. This research takes the Kinect into real-life kitchens, where touchless gestural ... Keywords: cooking, depth camera, gestures, home, joint selection, kinect, kitchen, push gesture, recipes
Galen Panger
Path recovery of a disappearing target in a large network of cameras
A large network of cameras is necessary for covering large areas in surveillance applications. In such systems, gaps between the fields of view of different cameras are often unavoidable. We present a method for path recovery of a single target in such ...
Amir Lev-Tov; Yael Moses
Authentication of images for 3D cameras: Reversibly embedding information using intelligent approaches
In this work, a reversible watermarking approach for authentication of 3D cameras based on computational intelligence is presented. Two intelligent techniques based on differential evolution (DE) and hybrid DE are employed to optimize the tradeoff between ... Keywords: 3D camera, Depth maps, Differential evolution algorithm, Integer wavelet transform, Particle swarm optimization, Reversible watermarking
Sana Ambreen Malik; Asifullah Khan; Mutawarra Hussain; Khurram Jawad; Rafiullah Chamlawi; Abdul Jalil
Probabilistic structure matching for visual SLAM with a multi-camera rig
We propose to use a multi-camera rig for simultaneous localization and mapping (SLAM), providing flexibility in sensor placement on mobile robot platforms while exploiting the stronger localization constraints provided by omni-directional sensors. In ... Keywords: Localization, Mapping, Mobile robot, Multi-camera rig, Omni-directional, SFM
Michael Kaess; Frank Dellaert
Engineering task plan for flammable gas atmosphere mobile color video camera systems
This Engineering Task Plan (ETP) describes the design, fabrication, assembly, and testing of the mobile video camera systems. The color video camera systems will be used to observe and record the activities within the vapor space of a tank on a limited exposure basis. The units will be fully mobile and designed for operation in the single-shell flammable gas producing tanks. The objective of this tank is to provide two mobile camera systems for use in flammable gas producing single-shell tanks (SSTs) for the Flammable Gas Tank Safety Program. The camera systems will provide observation, video recording, and monitoring of the activities that occur in the vapor space of applied tanks. The camera systems will be designed to be totally mobile, capable of deployment up to 6.1 meters into a 4 inch (minimum) riser.
Kohlman, E.H.
Would you keep speeding through a speed trap if you got a ticket there before?
you keep speeding through a speed trap if you got a ticket there before? you keep speeding through a speed trap if you got a ticket there before? Probably (hopefully) not. Likewise, taking advantage of lessons learned on our capital asset and clean-up projects is not only fiscally prudent, but also just makes good common sense. DOE Order 413.3B "Program and Project Management for the Acquisition of Capital Assets" re- quires formal lessons learned to be documented for a project, as follows: ď'·ď€ Within 90 days of CD-3 approval, to cover up-front planning and design lessons learned ď'·ď€ Within 90 days of CD-4 approval, to cover project execution and facility start-up les- sons learned These should be formal documents and should be submitted to OECM for sharing throughout the
Speed of the Earth : illusion and experience of speed and scale
The Speed of the Earth is a proposed sculpture dealing with light as pure experience within the context of short-lived rapid movement and large scale horizontal orientation within the environment. This will be accomplished ...
Benoff, Mitchell
Can Satellite Sampling of Offshore Wind Speeds Realistically Represent Wind Speed Distributions?
Wind speeds over the oceans are required for a range of applications but are difficult to obtain through in situ methods. Hence, remote sensing tools, which also offer the possibility of describing spatial variability, represent an attractive ...
R. J. Barthelmie; S. C. Pryor
LIRR High-Speed Flywheel Demonstration
LIRR High-Speed Flywheel LIRR High-Speed Flywheel Demonstration Guy Sliker Program Manager Research & Technology Development New York Power Authority This project is part of the Joint Energy Storage Initiative between the New York State Energy Research and Development Authority (NYSERDA) and the Energy Storage Systems Program of the U.S. Department of Energy (DOE/ESS), and managed by Sandia National Laboratories (SNL). Presentation Layout Introduction Flywheel Description Project Reasoning Project Objective Project Participants Expected Benefits New York Power Authority Highlights A public benefit energy corporation founded 1931 Largest non-federal public electric utility in United States Wholesale power supplier throughout New York State and neighboring states as required by law
High Speed Particle Image Velocimetry Overview
Speed Particle Image Velocimetry Speed Particle Image Velocimetry Overview The Department of Energy's National Energy Technology Laboratory is seeking licensing partners interested in implementing U.S. Non- provisional Patent Application 12/765,317 entitled "Method of Particle Trajectory Recognition in Particle Flows of High Particle Concentration Using a Candidate Trajectory Tree Process with Variable Search Areas." This patent application discloses a novel method to simultaneously track the motion of high numbers of object images under extreme, high concen- tration conditions. Although the software is designed to simultaneously track large numbers of particle images in flow fields, it can track any type of object whose locations are available at consecutive time increments (e.g.,
High-speed CARIBU and Other Behemoths
Question: Why did the caribou cross the road, at 76 million miles per hour? Answer: To catch up with the chicken. Visitors to the Department of Energy's Argonne National Laboratory won't actually encounter any hyper-speed fowl, but they will see a high-speed CARIBU, which recently started to chase other exotic beasts in the particle zoo. Argonne's CARIBU – which stands for Californium Rare Isotope Breeder Upgrade – is designed to study the inner part of an atom known as its nucleus. A nucleus consists of a collection of two types of particles, the proton, with a positive charge, and the neutron, with no charge, just mass. Those particles themselves are made of even smaller particles called quarks. CARIBU creates extra-heavy (neutron-rich) nuclei, and then spits them out of a nozzle for acceleration.
High-speed massively parallel scanning
A new technique for recording a series of images of a high-speed event (such as, but not limited to: ballistics, explosives, laser induced changes in materials, etc.) is presented. Such technique(s) makes use of a lenslet array to take image picture elements (pixels) and concentrate light from each pixel into a spot that is much smaller than the pixel. This array of spots illuminates a detector region (e.g., film, as one embodiment) which is scanned transverse to the light, creating tracks of exposed regions. Each track is a time history of the light intensity for a single pixel. By appropriately configuring the array of concentrated spots with respect to the scanning direction of the detection material, different tracks fit between pixels and sufficient lengths are possible which can be of interest in several high-speed imaging applications.
Decker, Derek E. (Byron, CA)
Thermodynamics in variable speed of light theories
The perfect fluid in the context of a covariant variable speed of light theory proposed by J. Magueijo is studied. On the one hand the modified first law of thermodynamics together with a recipe to obtain equations of state are obtained. On the other hand the Newtonian limit is performed to obtain the nonrelativistic hydrostatic equilibrium equation for the theory. The results obtained are used to determine the time variation of the radius of Mercury induced by the variability of the speed of light (c), and the scalar contribution to the luminosity of white dwarfs. Using a bound for the change of that radius and combining it with an upper limit for the variation of the fine structure constant, a bound on the time variation of c is set. An independent bound is obtained from luminosity estimates for Stein 2015B.
Racker, Juan [CONICET, Centro Atomico Bariloche, Avenida Bustillo 9500 (8400), San Carlos De Bariloche (Argentina); Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, Paseo del Bosque S/N (1900), La Plata (Argentina); Sisterna, Pablo [Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350 (7600), Mar del Plata (Argentina); Vucetich, Hector [Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, Paseo del Bosque S/N (1900), La Plata (Argentina)
The perfect fluid in the context of a covariant variable speed of light theory proposed by J. Magueijo is studied. On the one hand the modified first law of thermodynamics together with a recipe to obtain equations of state are obtained. On the other hand the Newtonian limit is performed to obtain the nonrelativistic hydrostatic equilibrium equation for the theory. The results obtained are used to determine the time variation of the radius of Mercury induced by the variability of the speed of light ($c$), and the scalar contribution to the luminosity of white dwarfs. Using a bound for the change of that radius and combining it with an upper limit for the variation of the fine structure constant, a bound on the time variation of $c$ is set. An independent bound is obtained from luminosity estimates for Stein 2015B.
Juan Racker; Pablo Sisterna; Hector Vucetich
Energy curable compositions having improved cure speeds
A composition and method provide improved physical properties and cure speed of polyurethane precursors, with or without free radical polymerizable monomers or oligomers present, by use of a two component catalyst system. The resin blend can be activated with a latent organometallic catalyst combined with an organic peroxide which can be a hydroperoxide or an acyl peroxide to decrease the cure time while increasing the break energy and tangent modulus of the system.
Halm, Leo W. (Blaine, MN)
All aboard for high-speed rail
A sleek, bullet-nosed train whizzing across the countryside is a fairly common sight in many nations. Since the Train a Grande Vitesse (TGV)--the record-setting ``train with great speed``--was introduced in France in 1981, Germany, Japan, and other countries have joined the high-speed club. In addition, the Eurostar passenger train, which travels between Great Britain and France through the Channel Tunnel, can move at 186 miles per hour once it reaches French tracks. Despite the technology`s growth elsewhere, rapid rail travel has not been seen on US shores beyond a few test runs by various manufacturers. Before the end of the century, however, American train spotters will finally be able to see some very fast trains here too. In March, Washington, DC-based Amtrak announced the purchase of 18 American Flyer high-speed train sets for the Northeast Corridor, which stretches from Boston through new York to the nation`s capital. Furthermore, Florida will get its own system by 2004, and other states are now taking a look at the technology. The American Flyer--designed by Montreal-based Bombardier and TGV manufacturer GEC Alsthom Transport in Paris--should venture onto US rails by 1999. Traveling at up to 150 miles per hour, the American Flyer will cut the New York-Boston run from 4 1/2 hours to 3 hours and reduce New York-Washington trip time from 3 hours to less than 2 3/4. Amtrak hopes the new trains and better times will earn it a greater share of travelers from air shuttles and perhaps from Interstate 95. This article describes how technologies that tilt railcars and propel the world`s fastest trains will be merged into one train set for the American Flyer, Amtrak`s first trip along high-speed rails.
Herman, D.
Modernizing Newton, to work at any speed
Modification of three ideas underlying Newton's original world view, with only minor changes in context, might offer two advantages to introductory physics students. First, the students will experience less cognitive dissonance when they encounter relativistic effects. Secondly, the map-based Newtonian tools that they spend so much time learning about can be extended to high speeds, non-inertial frames, and even (locally, of course) to curved-spacetime.
P. Fraundorf
The composition and method provide improved physical properties and cure speed of polyurethane precursors, with or without free radical polymerizable monomers or oligomers present, by use of a two component catalyst system. The resin blend can be activated with a latent organometallic catalyst combined with an organic peroxide which can be a hydroperoxide or an acyl peroxide to decrease the cure time while increasing the break energy and tangent modulus of the system.
Halm, L.W.
Wind Speed Forecasting for Power System Operation
In order to support large-scale integration of wind power into current electric energy system, accurate wind speed forecasting is essential, because the high variation and limited predictability of wind pose profound challenges to the power system operation in terms of the efficiency of the system. The goal of this dissertation is to develop advanced statistical wind speed predictive models to reduce the uncertainties in wind, especially the short-term future wind speed. Moreover, a criterion is proposed to evaluate the performance of models. Cost reduction in power system operation, as proposed, is more realistic than prevalent criteria, such as, root mean square error (RMSE) and absolute mean error (MAE). Two advanced space-time statistical models are introduced for short-term wind speed forecasting. One is a modified regime-switching, space-time wind speed fore- casting model, which allows the forecast regimes to vary according to the dominant wind direction and seasons. Thus, it avoids a subjective choice of regimes. The other one is a novel model that incorporates a new variable, geostrophic wind, which has strong influence on the surface wind, into one of the advanced space-time statistical forecasting models. This model is motivated by the lack of improvement in forecast accuracy when using air pressure and temperature directly. Using geostrophic wind in the model is not only critical, it also has a meaningful geophysical interpretation. The importance of model evaluation is emphasized in the dissertation as well. Rather than using RMSE or MAE, the performance of both wind forecasting models mentioned above are assessed by economic benefits with real wind farm data from Pacific Northwest of the U.S and West Texas. Wind forecasts are incorporated into power system economic dispatch models, and the power system operation cost is used as a loss measure for the performance of the forecasting models. From another perspective, the new criterion leads to cost-effective scheduling of system-wide wind generation with potential economic benefits arising from the system-wide generation of cost savings and ancillary services cost savings. As an illustration, the integrated forecasts and economic dispatch framework are applied to the Electric Reliability Council of Texas (ERCOT) equivalent 24- bus system. Compared with persistence and autoregressive models, the first model suggests that cost savings from integration of wind power could be on the scale of tens of millions of dollars. For the second model, numerical simulations suggest that the overall generation cost can be reduced by up to 6.6% using look-ahead dispatch coupled with spatio-temporal wind forecast as compared with dispatch with persistent wind forecast model.
Zhu, Xinxin
High Statistics Study of Nearby Type 1a Supernovae. QUEST Camera Short Term Maintenance: Final Technical Report
The Quest Camera was installed at the Palomar Obervatory in California. The camera was used to carry out a survey of low redshift Type 1a supernovae.The purpose of this DOE grant was to perform short term maintenance on the QUEST camera.
Baltay, Charles
The design and development of a high-speed digital imaging system
The goal of this research was to develop a high-speed digital imaging system is a for optically recording dynamic experimental mechanics events. Optical imaging ' valuable tool in the field of experimental mechanics because it yields full-field information about the stresses and displacements which develop in a material under steady-state or transient conditions. The first main design requirement for the system was to have an exposure time of less than fifty nanoseconds in order to avoid streaking of the images. Also, variable interframe times ranging from two to one hundred microseconds were required so that an appropriate time window of the event can be captured. The second main design function required that adequate spatial separation of each of the images be obtained. Finally, the recording medium had to preserve full, undisturbed gray-scale information and allow post-experiment image enhancement and processing to be performed. This last requirement translated into digital storage of the images. The high-speed digital imaging system that has been developed utilizes an acousto-optic deflector, or Bragg cell, to accomplish the necessary spatial separation of the images to be captured. The system employs a pulsed argon laser for its light source and uses a combination of charge-injection device cameras and a frame grabber to capture the images. The system was first evaluated by capturing static images of a test and a photoelastic compression specimen. The next evaluation phase involved grid capturing dynamic images of the stress waves travelling through a photoelastic impact specimen. The essential requirements for any high-speed recording system and the characteristics of existing systems are reviewed first, followed by a discussion of the essential elements of the new system. A detailed description of the arrangement and interaction between the system components is then presented, followed by the results from the evaluation experiments that have been performed. Finally, some comments concerning the further work needed to make the system fully operational are provided.
Thomas, Matthew Ray
Analysis of Bottom-Track and Compass Error in a Self-Contained Acoustic Doppler Diver Navigation Console
The Cobra-Tac (Teledyne RD Instruments) is a self-contained diver navigation system based on acoustic Doppler velocity log (DVL) technology that uses dead reckoning to compute displacements from a known starting point. The navigational accuracy ...
James L. Hench; Johanna H. Rosman
Engineering task plan for Tanks 241-AN-103, 104, 105 color video camera systems
This Engineering Task Plan (ETP) describes the design, fabrication, assembly, and installation of the video camera systems into the vapor space within tanks 241-AN-103, 104, and 105. The one camera remotely operated color video systems will be used to observe and record the activities within the vapor space. Activities may include but are not limited to core sampling, auger activities, crust layer examination, monitoring of equipment installation/removal, and any other activities. The objective of this task is to provide a single camera system in each of the tanks for the Flammable Gas Tank Safety Program.
Vehicle Technologies Office: Fact #222: June 24, 2002 Speed versus...
4, 2002 Speed versus Fuel Economy: Slow down to get more miles to the gallon to someone by E-mail Share Vehicle Technologies Office: Fact 222: June 24, 2002 Speed versus Fuel...
Excitation and control of a high-speed induction generator
This project investigates the use of a high speed, squirrel cage induction generator and power converter for producing DC electrical power onboard ships and submarines. Potential advantages of high speed induction generators ...
Englebretson, Steven Carl
The Probability Distribution of Land Surface Wind Speeds
The probability density function (pdf) of land surface wind speeds is characterized using a global network of observations. Daytime surface wind speeds are shown to be broadly consistent with the Weibull distribution, while nighttime surface wind ...
Adam H. Monahan; Yanping He; Norman McFarlane; Aiguo Dai
NETL: News Release - IntelliPipe Technology: Wired for Speed...
Speed Achieved in Major Field Test in Wyoming CASPER, WY - Methods for gathering downhole oil and gas well data have grown more sophisticated in recent years, but the speed with...
The European Satellite Navigation Program : policy analysis and recommendations for the future
The European Satellite Navigation Program is a case study that combines Technical / Public / Private aspects in an integrative way. Therefore, it is a sound case for a TPP thesis candidate. This thesis analyzes the European ...
Escudero San José, Laura
Correction Methods and Algorithms for Inertial Navigation System Working Inside of Pipelines
The correction methods for inertial navigation system of the "pig" are proposed in this paper. These methods are related with such sensors as inclinometers and potentiometers and provide independent information about the angles used for improving the ...
S. Sadovnychiy; V. Ponomaryov; A. Sadovnychyy
Comments on "Correction" of Inertial Navigation with Loran C on NOAA's P-3 Aircraft"
A recent paper by Masters and Leise that addresses the problem of correcting inertial navigation data using Loran C describes another variation on the traditional approach that has been used by researchers in the airborne science community for ...
Barrie W. Leach; J. Ian Macpherson
The Image Navigation Cloud Mask for the Multiangle Imaging Spectroradiometer (MISR)
The authors have developed a cloud mask technique that may be applied to the efficient selection of "clear enough" scenes for image navigation. While the mask can be applied generally, the motivation for its development comes from its intended ...
Larry Di Girolamo; Roger Davies
Applying Collision Avoidance Expert System to Navigation Training Systems as an Intelligent Tutor
To enhance the skills of captains and improve the existing training technologies, it is very important and urgent to research and develop an intelligent navigation training system. Therefore we propose to incorporate a collision avoidance expert system ...
Chunsheng Yang; Sieu Phan; Pikuei Kuo; Fuhua Oscar Lin
An investigation of the roles of geomagnetic and acoustic cues in whale navigation and orientation
Many species of whales migrate annually between high-latitude feeding grounds and low-latitude breeding grounds. Yet, very little is known about how these animals navigate during these migrations. This thesis takes a first ...
Allen, Ann Nichole
Modeling of wind and radar for simulation in four-dimensional navigation environment
Disturbances affecting time control precision in four-dimension navigation are modeled. Several models of wind and turbulence from the ground to ten thousand feet are developed. A distinction is made between wind mean and ...
Malherbe, Gerard Andre
Light pulse atom interferometry at short interrogation times for inertial navigation
Light pulse atom interferometry with cold atoms is a promising inertial sensing technology for high accuracy navigation. At present, laboratory atom interferometers match or surpass state of the art mechanical and optical ...
Butts, David LaGrange
Brain oscillatory activity during spatial navigation: Theta and gamma activity link medial temporal and parietal regions
Brain oscillatory correlates of spatial navigation were investigated using blind source separation (BSS) and standardized low resolution electromagnetic tomography (sLORETA) analyses of 62-channel EEG recordings. Twenty-five participants were instructed ...
David J. White; Marco Congedo; Joseph Ciorciari; Richard B. Silberstein
Virtual long baseline (VLBL) autonomous underwater vehicle navigation using a single transponder
(cont.) Therefore, accurate underwater navigation using a single location transponder would provide dramatic time and cost savings for underwater vehicle operations. This thesis presents a simulation of autonomous underwater ...
LaPointe, Cara Elizabeth Grupe
NIST Calls for Suggestions to Speed Computer Incident ...
NIST Calls for Suggestions to Speed Computer Incident Teams Responses. From NIST Tech Beat: June 28, 2013. ...
A JTIDS/INS/DGPS navigation system with pseudorange differential information transmitted over Link-16: design and implementation
As the battle environment becomes more complicated, the demand for higher accuracy and better anti-jam capacity of navigation has been increasing. The conventional JTIDS/INS/GPS integrated navigation cannot meet the demands of certain situations such ... Keywords: HSAP, Integration navigation, Link-16, Pseudorange differential GPS, RTCM SC-104
Honglei Qin, Li Cong, Xiaodong Zheng, Haibo Liu
Building a 3D Simulator for Autonomous Navigation of Robotic Fishes
Abstract-- This paper presents a 3D simulator used for studying the motion control and autonomous navigation of a robotic fish. The simplified kinematics and hydrodynamics models are created for the simulator, including many other object models such as water, obstacles, sonar sensors and a swimming pool. The experimental results show that the use of this simulator is a realistic and convenient way to develop autonomous navigation algorithms for robotic fishes. I.
Jindong Liu
Virtual Wind Speed Sensor for Wind Turbines Andrew Kusiak1
Virtual Wind Speed Sensor for Wind Turbines Andrew Kusiak1 ; Haiyang Zheng2 ; and Zijun Zhang3 Abstract: A data-driven approach for development of a virtual wind-speed sensor for wind turbines is presented. The virtual wind-speed sensor is built from historical wind-farm data by data-mining algorithms
Kusiak, Andrew
Wind speed PDF classification using Dirichlet mixtures Rudy CALIF1
Wind speed PDF classification using Dirichlet mixtures Rudy CALIF1 , Richard EMILION2 , Ted'Orléans), UMR CNRS 6628 Université d'Orléans, France. Abstract: Wind energy production is very sensitive to instantaneous wind speed fluctuations. Thus rapid variation of wind speed due to changes in the local
The Access Almanac: Planning for High Speed Rail
Planning for High Speed Rail M A R T I N WA C H S C A L I FN O T T O build a high speed rail system and, if so, how toplanning for high speed rail in California been so troubled?
Wachs, Martin
Sliding mode control law for a variable speed wind turbine
Modern wind turbines are designed in order to work in variable speed operations. To perform this task, wind turbines are provided with adjustable speed generators, like the double feed induction generator. One of the main advantage of adjustable speed ... Keywords: modeling and simulation, variable structure control, wind turbine control
Oscar Barambones; Jose Maria Gonzalez De Durana; Patxi Alkorta; Jose Antonio Ramos; Manuel De La Sen
Lorentz transformation directly from the invariance of the speed of light via the addition law of parallel speeds
We show that starting with the addition law of parallel speeds derived as a consequence of the invariance of the speed of light, the Lorentz transformations for the space-time coordinates can be derived.
Bernhard Rothenstein
File:Table for Tip Speed Intervals of Length.pdf | Open Energy Information
source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search File Edit History Facebook icon Twitter icon » File:Table for Tip Speed Intervals of Length.pdf Jump to: navigation, search File File history File usage Metadata File:Table for Tip Speed Intervals of Length.pdf Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution (1,275 × 1,650 pixels, file size: 99 KB, MIME type: application/pdf) File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 09:37, 3 January 2014 Thumbnail for version as of 09:37, 3 January 2014 1,275 × 1,650 (99 KB) Foteri (Talk | contribs) Category:Wind for Schools Portal CurriculaCategory:Wind for Schools High School Curricula
Attitude control of a piezo-strut mounted camera on a spacecraft with deployed solar panels
A nonlinear two loop quaternion based state dependent Ricatti equation (QSDRE) control and an LQR control based on linearized system equations are designed to improve the pointing performance of a large Earth Observation camera carried by a spacecraft ...
Sharmila Kayastha; Burak Akbulut; Ozan Tekinalp; Kemal Ozgoren
Inexpensive Time-Lapse Digital Cameras for Studying Transient Meteorological Phenomena: Dust Devils and Playa Flooding
The authors describe the design and performance of inexpensive and compact time-lapse cameras suitable for field deployment in remote locations for long periods and their application to studying two time-variable meteorological phenomena in arid ...
Ralph D. Lorenz; Brian Jackson; Jason W. Barnes
Using digital cameras as quasi-spectral radiometers to study complex fenestration systems
This work discusses the use of digital cameras fitted with absorption filters as quasi-spectral radiometers. By filtering incident light into selected wavelength intervals, accurate estimates of radiances can be made for ...
Gayeski, Nicholas
Geometric Calibration of Digital Cameras for 3D Cumulus Cloud Measurements
A technique for calibrating digital cameras for stereo photogrammetry of cumulus clouds is presented. It has been applied to characterize the formation of summer thunderstorms observed during the Cumulus Photogrammetric, In Situ, and Doppler ...
Jiuxiang Hu; Anshuman Razdan; Joseph A. Zehnder
Radiometric and Geometric Calibration of a Visible Spectral Electro-Optic "Fisheye" Camera Radiance Distribution System
Camera systems which measure a complete hemispherical field ("fisheye" lens systems), can be applied to the measurement of the radiance, but accurate radiometric and geometric calibrations are required to obtain absolute radiance data. The ...
Kenneth J. Voss; Giuseppe Zibordi
Ultra-fast image converter streak cameras for laser fusion diagnostics
The design and operation of a 10-ps resolution optical streak camera used to characterize laser pulses and other transient optical signals in fusion research is discussed. Performance characteristics are presented. The design, operation, and application of an x-ray streak camera used to study laser-produced plasmas in the x-ray spectral region of 1 to 10 keV with temporal and spatial resolutions of approximately 20 ps and approximately 10 $mu$m is also discussed. (auth)
Houghton, J.W.; Thomas, S.W.; Attwood, D.T.; Coleman, L.W.
Sustainably Priced Energy Enterprise Development (SPEED) Goals | Department
Sustainably Priced Energy Enterprise Development (SPEED) Goals Sustainably Priced Energy Enterprise Development (SPEED) Goals Sustainably Priced Energy Enterprise Development (SPEED) Goals < Back Eligibility Investor-Owned Utility Municipal Utility Rural Electric Cooperative Savings Category Bioenergy Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Solar Heating & Cooling Water Heating Wind Program Info State Vermont Program Type Renewables Portfolio Standard Provider Vermont Public Service Board Vermont's Sustainably Priced Energy Enterprise Development (SPEED) Program was created by legislation in 2005 to promote renewable energy development. The SPEED program itself is not a renewable portfolio goal or standard. However, if the Vermont Public Service Board (PSB) determines that the
Lensless Magneto-optic speed sensor
Lensless magneto-optic speed sensor. The construction of a viable Faraday sensor has been achieved. Multimode fiber bundles are used to collect the light. If coupled directly into a 100 or 200 .mu.m core fiber, light from a light emitting diode (LED) is sufficient to operate the sensor. In addition, LEDs ensure that no birefringence effects in the input fiber are possible, as the output from such light sources have random polarization. No lens is required since the large diameter optical fibers and thin crystals of materials having high Verdet constants (such as iron garnets) employed permit the collection of a substantial quantity of light. No coupler is required. The maximum amount of light which could reach a detector using a coupler is 25%, while the measured throughput of the fiber-optic bundle without a coupler is about 42%. All of the elements employed in the present sensor are planar, and no particular orientation of these elements is required. The present sensor operates over a wide range of distances from magnetic field sources, and observed signals are large. When a tone wheel is utilized, the signals are independent of wheel speed, and the modulation is observed to be about 75%. No sensitivity to bends in the input or output optical fiber leads was observed. Reliable operation was achieved down to zero frequency, or no wheel rotation.
Veeser, Lynn R. (Los Alamos, NM); Forman, Peter R. (Los Alamos, NM); Rodriguez, Patrick J. (Santa Fe, NM)
Lensless magneto-optic speed sensor
Lensless magneto-optic speed sensor is disclosed. The construction of a viable Faraday sensor has been achieved. Multimode fiber bundles are used to collect the light. If coupled directly into a 100 or 200 {micro}m core fiber, light from a light emitting diode (LED) is sufficient to operate the sensor. In addition, LEDs ensure that no birefringence effects in the input fiber are possible, as the output from such light sources have random polarization. No lens is required since the large diameter optical fibers and thin crystals of materials having high Verdet constants (such as iron garnets) employed permit the collection of a substantial quantity of light. No coupler is required. The maximum amount of light which could reach a detector using a coupler is 25%, while the measured throughput of the fiber-optic bundle without a coupler is about 42%. All of the elements employed in the present sensor are planar, and no particular orientation of these elements is required. The present sensor operates over a wide range of distances from magnetic field sources, and observed signals are large. When a tone wheel is utilized, the signals are independent of wheel speed, and the modulation is observed to be about 75%. No sensitivity to bends in the input or output optical fiber leads was observed. Reliable operation was achieved down to zero frequency, or no wheel rotation. 5 figs.
Veeser, L.R.; Forman, P.R.; Rodriguez, P.J.
Alternative Fuels Data Center: Medium-Speed and Neighborhood Electric
Medium-Speed and Medium-Speed and Neighborhood Electric Vehicle (NEV) Definition and Access to Roadways to someone by E-mail Share Alternative Fuels Data Center: Medium-Speed and Neighborhood Electric Vehicle (NEV) Definition and Access to Roadways on Facebook Tweet about Alternative Fuels Data Center: Medium-Speed and Neighborhood Electric Vehicle (NEV) Definition and Access to Roadways on Twitter Bookmark Alternative Fuels Data Center: Medium-Speed and Neighborhood Electric Vehicle (NEV) Definition and Access to Roadways on Google Bookmark Alternative Fuels Data Center: Medium-Speed and Neighborhood Electric Vehicle (NEV) Definition and Access to Roadways on Delicious Rank Alternative Fuels Data Center: Medium-Speed and Neighborhood Electric Vehicle (NEV) Definition and Access to Roadways on Digg
Vehicle Technologies Office: Fact #410: February 6, 2006 Maximum Speed
0: February 6, 0: February 6, 2006 Maximum Speed Limits by State, 2005 to someone by E-mail Share Vehicle Technologies Office: Fact #410: February 6, 2006 Maximum Speed Limits by State, 2005 on Facebook Tweet about Vehicle Technologies Office: Fact #410: February 6, 2006 Maximum Speed Limits by State, 2005 on Twitter Bookmark Vehicle Technologies Office: Fact #410: February 6, 2006 Maximum Speed Limits by State, 2005 on Google Bookmark Vehicle Technologies Office: Fact #410: February 6, 2006 Maximum Speed Limits by State, 2005 on Delicious Rank Vehicle Technologies Office: Fact #410: February 6, 2006 Maximum Speed Limits by State, 2005 on Digg Find More places to share Vehicle Technologies Office: Fact #410: February 6, 2006 Maximum Speed Limits by State, 2005 on AddThis.com...
Jefferson Lab Science Series - The Ultimate Speed
Higgs Boson and Our Life Higgs Boson and Our Life Previous Video (The Higgs Boson and Our Life) Science Series Video Archive Next Video (What Is CEBAF All About?) What Is CEBAF All About? The Ultimate Speed Dr. William Bertozzi - Massachusetts Institute of Technology Sometime in 1962 In his youth, Dr. William Bertozzi, an MIT professor who has long been a leader in experimental nuclear physics using beams of electrons, carried out an experiment in which he explored the relationship between the velocity of electrons and their kinetic energy by measurements over a range of accelerating voltages between 0.5 MeV and 15 MeV. The kinetic energy is measured using calorimetry and the velocity is measured by time-of-flight. This educational film, made in 1962, documents the experiment and shows
High Speed AB-Solar Sail
The Solar sail is a large thin film used to collect solar light pressure for moving of space apparatus. Unfortunately, the solar radiation pressure is very small about 9 mkN/sq.m at Earth's orbit. However, the light force significantly increases up to 0.2 - 0.35 N/sq.m near the Sun. The author offers his research on a new revolutionary highly reflective solar sail which flyby (after special maneuver) near Sun and attains velocity up to 400 km/sec and reaching far planets of the Solar system in short time or enable flights out of Solar system. New, highly reflective sail-mirror allows avoiding the strong heating of the solar sail. It may be useful for probes close to the Sun and Mercury and Venus. Key words: AB-solar sail, highly reflective solar sail, high speed propulsion.
A. Bolonkin
High Speed/ Low Effluent Process for Ethanol
n this project, BPI demonstrated a new ethanol fermentation technology, termed the High Speed/ Low Effluent (HS/LE) process on both lab and large pilot scale as it would apply to wet mill and/or dry mill corn ethanol production. The HS/LE process allows very rapid fermentations, with 18 to 22% sugar syrups converted to 9 to 11% ethanol 'beers' in 6 to 12 hours using either a 'consecutive batch' or 'continuous cascade' implementation. This represents a 5 to 8X increase in fermentation speeds over conventional 72 hour batch fermentations which are the norm in the fuel ethanol industry today. The 'consecutive batch' technology was demonstrated on a large pilot scale (4,800 L) in a dry mill corn ethanol plant near Cedar Rapids, IA (Xethanol Biofuels). The pilot demonstrated that 12 hour fermentations can be accomplished on an industrial scale in a non-sterile industrial environment. Other objectives met in this project included development of a Low Energy (LE) Distillation process which reduces the energy requirements for distillation from about 14,000 BTU/gal steam ($0.126/gal with natural gas @ $9.00 MCF) to as low as 0.40 KW/gal electrical requirements ($0.022/gal with electricity @ $0.055/KWH). BPI also worked on the development of processes that would allow application of the HS/LE fermentation process to dry mill ethanol plants. A High-Value Corn ethanol plant concept was developed to produce 1) corn germ/oil, 2) corn bran, 3) ethanol, 4) zein protein, and 5) nutritional protein, giving multiple higher value products from the incoming corn stream.
M. Clark Dale
High Speed Rail in Japan: A Review and Evaluation of the Shinkansen Train
~High Speed R~l $~r~s High Speed Rail in Japan: A Review andorregulation. High Speed Rail in Japan: A Review andCALIFORNIA HIGH SPEED RAIL SERIES Working Paper April 1992
Taniguchi, Mamoru
Building Technologies Office: Advanced, Variable Speed Air-Source
Advanced, Variable Advanced, Variable Speed Air-Source Integrated Heat Pumps Research Project to someone by E-mail Share Building Technologies Office: Advanced, Variable Speed Air-Source Integrated Heat Pumps Research Project on Facebook Tweet about Building Technologies Office: Advanced, Variable Speed Air-Source Integrated Heat Pumps Research Project on Twitter Bookmark Building Technologies Office: Advanced, Variable Speed Air-Source Integrated Heat Pumps Research Project on Google Bookmark Building Technologies Office: Advanced, Variable Speed Air-Source Integrated Heat Pumps Research Project on Delicious Rank Building Technologies Office: Advanced, Variable Speed Air-Source Integrated Heat Pumps Research Project on Digg Find More places to share Building Technologies Office: Advanced,
The Pemex-B autonomous demining robot: perception and navigation strategies
Landmines are easy to lay but difficult to find and destroy. They are blind killers that should be forbidden as soon as possible. Nevertheless, there are about 100 million mines to be removed, and as many ready to be dispersed by hand or helicopter. ... Keywords: GPS, Pemex-B autonomous demining robot, collective behaviour, computerised navigation, cooperative systems, landmines, laser ranging, lightweight low-cost semi-autonomous robots, local scan, mobile robots, monitoring, monitoring station, navigation strategies, odometry, path planning, perception, radio coordination, surveillance, surveillance team, telerobotics, weapons
Marine and Hydrokinetic Renewable Energy Technologies: Potential Navigational Impacts and Mitigation Measures
On April 15, 2008, the Department of Energy (DOE) issued a Funding Opportunity Announcement for Advanced Water Power Projects which included a Topic Area for Marine and Hydrokinetic Renewable Energy Market Acceleration Projects. Within this Topic Area, DOE identified potential navigational impacts of marine and hydrokinetic renewable energy technologies and measures to prevent adverse impacts on navigation as a sub-topic area. DOE defines marine and hydrokinetic technologies as those capable of utilizing one or more of the following resource categories for energy generation: ocean waves; tides or ocean currents; free flowing water in rivers or streams; and energy generation from the differentials in ocean temperature. PCCI was awarded Cooperative Agreement DE-FC36-08GO18177 from the DOE to identify the potential navigational impacts and mitigation measures for marine hydrokinetic technologies, as summarized herein. The contract also required cooperation with the U.S. Coast Guard (USCG) and two recipients of awards (Pacific Energy Ventures and reVision) in a sub-topic area to develop a protocol to identify streamlined, best-siting practices. Over the period of this contract, PCCI and our sub-consultants, David Basco, Ph.D., and Neil Rondorf of Science Applications International Corporation, met with USCG headquarters personnel, with U.S. Army Corps of Engineers headquarters and regional personnel, with U.S. Navy regional personnel and other ocean users in order to develop an understanding of existing practices for the identification of navigational impacts that might occur during construction, operation, maintenance, and decommissioning. At these same meetings, "standard" and potential mitigation measures were discussed so that guidance could be prepared for project developers. Concurrently, PCCI reviewed navigation guidance published by the USCG and international community. This report summarizes the results of this effort, provides guidance in the form of a checklist for assessing the navigational impacts of potential marine and hydrokinetic projects, and provides guidance for improving the existing navigational guidance promulgated by the USCG in Navigation Vessel Inspection Circular 02 07. At the request of the USCG, our checklist and mitigation guidance was written in a generic nature so that it could be equally applied to offshore wind projects. PCCI teleconferenced on a monthly basis with DOE, Pacific Energy Ventures and reVision in order to share information and review work products. Although the focus of our effort was on marine and hydrokinetic technologies, as defined above, this effort drew upon earlier work by the USCG on offshore wind renewable energy installations. The guidance provided herein can be applied equally to marine and hydrokinetic technologies and to offshore wind, which are collectively referred to by the USCG as Renewable Energy Installations.
Cool, Richard, M.; Hudon, Thomas, J.; Basco, David, R.; Rondorf, Neil, E.
The Development Effects of High-Speed Rail Stations and Implications for California
CALIFORNIA Rail System The CalSpeed research group at theresearch and development, and Figure California High- Speed Rail
Sands, Brian D.
Effect of Casting Speed on Temperature Difference between Copper ...
DRI Carburization in the Reduction and Transition Zones of a Shaft Furnace MIDREX Type · Effect of Casting Speed on Temperature Difference between ...
Speeds and Arrival Times of Solar Transients Approximated by Self ...
Abstract The NASA Solar TErrestrial RElations Observatory (STEREO) mission offered the possibility to forecast the arrival times, speeds, and directions of solar ...
United States Wind Resource Map: Annual Average Wind Speed at...
Wind Powering America (EERE)
and atmospheric effects may cause the wind speed to depart from the map estimates. Expert advice should be sought in placing wind turbines and estimating their energy production....
Early Science High Speed Combustion and Detonation Project
Science High Speed Combustion and Detonation Project (HSCD) Alexei Khokhlov, University of Chicago Joanna Austin, University of Illinois Andrew Knisely, University of Illinois...
Flight Control Design for Rotorcraft with Variable Rotor Speed.
??Flight control design issues for rotorcraft with variable rotor speed are investigated, and new design methodologies are developed to deal with the challenges of variable… (more)
Guo, Wei
Research moves at the speed of availability | Argonne National...
Centers Science Highlights Postdoctoral Researchers Research moves at the speed of availability October 31, 2012 Tweet EmailPrint Researchers sequence hundreds of genomes across...
Facility. HIGH-SPEED IMAGER . FOR FAST, TRANSIENT ... GATOR can convert x rays and other types of radiation to coherent optical radiation, which can be transported and
Extreme Wind Speed Data Sets: Texas Tech/CSU
... B-indicates a beacon tower exposure. ... 93839 Memphis TN 4 3 1968 123 107 WIND SPEEDS GREATER ... [ SED Home | Extreme Winds Home | Data ...
New process speeds conversion of biomass to fuels
Conversion of Biomass to Fuels New process speeds conversion of biomass to fuels Scientists made a major step forward recently towards transforming biomass-derived molecules into...
Special Report: Graphics Processing Units Speed Results in Extreme...
Special Report: Graphics Processing Units Speed Results in Extreme-Scale Supercomputers American Fusion News Category: U.S. Universities Link: Special Report: Graphics Processing...
'Slow light' advance could speed optical computing, telecommunications
"Slow light" and specialized metamaterials 'Slow light' advance could speed optical computing, telecommunications Researchers have made the first demonstration of rapidly switching...
Variable current speed controller for eddy current motors
A speed control system for eddy current motors is provided in which the current to the motor from a constant frequency power source is varied by comparing the actual motor speed signal with a setpoint speed signal to control the motor speed according to the selected setpoint speed. A three-phase variable voltage autotransformer is provided for controlling the voltage from a three-phase power supply. A corresponding plurality of current control resistors is provided in series with each phase of the autotransformer output connected to inputs of a three-phase motor. Each resistor is connected in parallel with a set of normally closed contacts of plurality of relays which are operated by control logic. A logic circuit compares the selected speed with the actual motor speed obtained from a digital tachometer monitoring the motor spindle speed and operated the relays to add or substract resistance equally in each phase of the motor input to vary the motor current to control the motor at the selected speed.
Gerth, H.L.; Bailey, J.M.; Casstevens, J.M.; Dixon, J.H.; Griffith, B.O.; Igou, R.E.
Discussion of "Ultimate Wind Load Design Gust Wind Speeds ...
... Ind. Aerodyn., 97(3–4), 120–131. Peterka, JA (2001). "Database of peak gust wind speeds, Texas Tech/ CSU." Extreme winds and wind effects on ...
High-Speed Fracture Phenomena of Glass Bottle by Underwater ...
Presentation Title, High-Speed Fracture Phenomena of Glass Bottle by Underwater Shock Wave. Author(s), Hidetoshi Sakamoto, Shinjirou Kawabe, Yoshifumi ...
Surface wind speed distributions| Implications for climate and wind power.
?? Surface constituent and energy fluxes, and wind power depend non-linearly on wind speed and are sensitive to the tails of the wind distribution. Until… (more)
Capps, Scott Blair
High Speed Rail in Greece : methods for evaluating economic impacts.
??High Speed Rail is a mode that gains popularity every day. Many countries have such a network and others are on the way to adopting… (more)
Radopoulou, Stefania Christina
3.2B Pixel Camera to Shed Light on Southern Sky | Department of Energy
3.2B Pixel Camera to Shed Light on Southern Sky 3.2B Pixel Camera to Shed Light on Southern Sky 3.2B Pixel Camera to Shed Light on Southern Sky July 24, 2012 - 10:56am Addthis This is an artist's rendering of the Large Synoptic Survey Telescope (LSST), the 8.4 meter wide-field telescope that the National Science Board recently approved to advance to its final design stage. Construction is expected to begin in 2014 and take about five years. | Photo courtesy of LSST Corporation. This is an artist's rendering of the Large Synoptic Survey Telescope (LSST), the 8.4 meter wide-field telescope that the National Science Board recently approved to advance to its final design stage. Construction is expected to begin in 2014 and take about five years. | Photo courtesy of LSST Corporation. Charles Rousseaux Charles Rousseaux
Beam based calibration of X-ray pinhole camera in SSRF
The Shanghai Synchrotron Radiation Facility (SSRF) contains a 3.5-GeV storage ring serving as a national X-ray synchrotron radiation user facility characterized by a low emittance and a low coupling. The stability and quality of the electron beams are monitored continuously by an array of diagnostics. In particular, an X-ray pinhole camera is employed in the diagnostics beamline of the ring to characterize the position, size, and emittance of the beam. The performance of the measurement of the transverse electron beam size is given by the width of the point spread function (PSF) of the X-ray pinhole camera. Typically the point spread function of the X-ray pinhole camera is calculated via analytical or numerical method. In this paper we will introduce a new beam based calibration method to derive the width of the PSF online.
Leng, Yong-Bin; Zhang, Man-Zhou; Chen, Zhi-Chu; Chen, Jie; Ye, Kai-Rong
Yong-Bin Leng; Guo-Qing Huang; Man-Zhou Zhang; Zhi-Chu Chen; Jie Chen; Kai-Rong Ye
High speed point derivative microseismic detector
A high speed microseismic event detector constructed in accordance with the present invention uses a point derivative comb to quickly and accurately detect microseismic events. Compressional and shear waves impinging upon microseismic receiver stations disposed to collect waves are converted into digital data and analyzed using a point derivative comb including assurance of quiet periods prior to declaration of microseismic events. If a sufficient number of quiet periods have passed, the square of a two point derivative of the incoming digital signal is compared to a trip level threshold exceeding the determined noise level to declare a valid trial event. The squaring of the derivative emphasizes the differences between noise and signal, and the valid event is preferably declared when the trip threshold has been exceeded over a temporal comb width to realize a comb over a given time period. Once a trial event has been declared, the event is verified through a spatial comb, which applies the temporal event comb to additional stations. The detector according to the present invention quickly and accurately detects initial compressional waves indicative of a microseismic event which typically exceed the ambient cultural noise level by a small amount, and distinguishes the waves from subsequent larger amplitude shear waves. 9 figs.
Uhl, J.E.; Warpinski, N.R.; Whetten, E.B.
A high speed microseismic event detector constructed in accordance with the present invention uses a point derivative comb to quickly and accurately detect microseismic events. Compressional and shear waves impinging upon microseismic receiver stations disposed to collect waves are converted into digital data and analyzed using a point derivative comb including assurance of quiet periods prior to declaration of microseismic events. If a sufficient number of quiet periods have passed, the square of a two point derivative of the incoming digital signal is compared to a trip level threshold exceeding the determined noise level to declare a valid trial event. The squaring of the derivative emphasizes the differences between noise and signal, and the valid event is preferably declared when the trip threshold has been exceeded over a temporal comb width to realize a comb over a given time period. Once a trial event has been declared, the event is verified through a spatial comb, which applies the temporal event comb to additional stations. The detector according to the present invention quickly and accurately detects initial compressional waves indicative of a microseismic event which typically exceed the ambient cultural noise level by a small amount, and distinguishes the waves from subsequent larger amplitude shear waves.
Uhl, James Eugene (Albuquerque, NM); Warpinski, Norman Raymond (Albuquerque, NM); Whetten, Ernest Blayne (Albuquerque, NM)
High speed curved position sensitive detector
A high speed curved position sensitive porportional counter detector for use in x-ray diffraction, the detection of 5-20 keV photons and the like. The detector employs a planar anode assembly of a plurality of parallel metallic wires. This anode assembly is supported between two cathode planes, with at least one of these cathode planes having a serpentine resistive path in the form of a meander having legs generally perpendicular to the anode wires. This meander is produced by special microelectronic fabrication techniques whereby the meander "wire" fans outwardly at the cathode ends to produce the curved aspect of the detector, and the legs of the meander are small in cross-section and very closely spaced whereby a spatial resolution of about 50 .mu.m can be achieved. All of the other performance characteristics are about as good or better than conventional position sensitive proportional counter type detectors. Count rates of up to 40,000 counts per second with 0.5 .mu.s shaping time constants are achieved.
Hendricks, Robert W. (Montgomery County, VA); Wilson, Jack W. (Knox County, TN)
Optical Design of Beam Shaping Optics for Camera Probe and LED Light Illumination Used for Minimally Invasive Abdominal Surgery.
??The optical design of a LED illuminator and camera imaging system were studied for potential use in a small medical "robotic type" probe to be… (more)
He, Weiyi
?? The optical design of a LED illuminator and camera imaging system were studied for potential use in a small medical "robotic type" probe to… (more)
Development of Large area Gamma-ray Camera with GSO(Ce) Scintillator Arrays and PSPMTs
We have developed a position-sensitive scintillation camera with a large area absorber for use as an advanced Compton gamma-ray camera. At first we tested GSO(Ce) crystals. We compared light output from the GSO(Ce) crystals under various conditions: the method of surface polishing, the concentration of Ce, and co-doping Zr. As a result, we chose the GSO(Ce) crystals doped with only 0.5 mol% Ce, and its surface polished by chemical etching as the scintillator of our camera. We also made a 16$\\times$16 cm$^2$ scintillation camera which consisted of 9 position-sensitive PMTs (PSPMTs Hamamatsu flat-panel H8500), the each of which had 8$\\times$8 anodes with a pitch of 6 mm and coupled to 8$\\times$8 arrays of pixelated 6$\\times6\\times$13 mm$^3$ GSO(Ce) scintillators. For the readout system of the 576 anodes of the PMTs, we used chained resistors to reduce the number of readout channels down to 48 to reduce power consumption. The camera has a position resolution of less than 6mm and a typical energy resolution of 10.5% (FWHM) at 662 keV at each pixel in a large area of 16$\\times$16 cm$^2$. %to choose the best scintillator for our project. Furthermore we constructed a 16$\\times$16 array of 3$\\times3\\times$13 mm$^3$ pixelated GSO(Ce) scintillators, and glued it to a PMT H8500. This camera had the position resolution of less than 3mm, over an area of 5$\\times$5 cm$^2$, except for some of the edge pixels; the energy resolution was typically 13% (FWHM) at 662 keV.
H. Nishimura; K. Hattori; H. Kubo; T. Tanimori
Low Wind Speed Technology Phase I: Prototype Multi-Megawatt Low Wind Speed Turbine; General Electric Wind Energy, LLC
This fact sheet describes a subcontract with GE Wind Energy to develop an advanced prototype turbine to significantly reduce energy costs (COE) in low wind speed environments.
LLiST - a new star tracker camera for tip-tilt correction at IOTA
The tip-tilt correction system at the Infrared Optical Telescope Array (IOTA) has been upgraded with a new star tracker camera. The camera features a backside-illuminated CCD chip offering doubled overall quantum efficiency and a four times higher system gain compared to the previous system. Tests carried out to characterize the new system showed a higher system gain with a lower read-out noise electron level. Shorter read-out cycle times now allow to compensate tip-tilt fluctuations so that their error imposed on visibility measurements becomes comparable to, and even smaller than, that of higher-order aberrations.
P. A. Schuller; M. G. Lacasse; D. Lydon; W. H. McGonagle; E. Pedretti; R. K. Reich; F. P. Schloerb; W. A. Traub
Website navigation tools: a decade of design trends 2002 to 2011
The World Wide Web Consortium describes the Web as "the universe of network-accessible information, the embodiment of human knowledge" (W3C, 2011). This vision of the Web is contingent on the ability of users to freely access and contribute to the overall ... Keywords: indexes, navigation tools, search, sitemaps, website design
Chris J. Pilgrim
Data collection system for the navigation of wheelchair users: a preliminary report
In Japan, population of aged people is becoming greater. According to it, number of the wheelchair user would become larger. The government has being improved to lessen the barriers for these people. But depending on the physical power of wheel chair ... Keywords: GPS, QR-code, navigation, wheelchair
Yasuaki Sumida; Kazuaki Goshi; Katsuya Matsunaga
Social navigation for loosely-coupled information seeking in tightly-knit groups using webwear
Many web-based information-seeking tasks are set in a social context where other people's knowledge and advice improves success in finding information. However, when tightly-knit contacts (friends, family, colleagues) are not available, information seeking ... Keywords: collaborative information seeking, social navigation
Scott S. Bateman; Carl A. Gutwin; Gordon I. McCalla
Comparison of techniques for mixed-space collaborative navigation Aaron Stafford Bruce H. Thomas Wayne Piekarski
Comparison of techniques for mixed-space collaborative navigation Aaron Stafford Bruce H. Thomas Lakes Blvd, Mawson Lakes, South Australia, 5095 Email: {aaron.stafford reality (AR) system (Stafford et al. 2006). The 3D reconstruction tabletop display (HOG table), as seen
Fuzzy multiobjective decision making for navigation of mobile robots in dynamic, unstructured environments
In this work we apply the notion of fuzzy multi-objective decision making to the problem of navigation of mobile robots in unstructured environments such as lunar and planetary surfaces and military zones. In particular the proposed approach is concerned ...
Earl B. Smith; Reza Langari
An autonomous hybrid robot system to navigate through unknown maze environments
This paper describes a fully complete autonomous hybrid robot system, named YAM (Yet Another Mouse), that is able to navigate through an unknown maze environment. YAM effectively tackles the problem of how to represent the environment using its sensor ... Keywords: intelligent agents, knowledge representation, path planning, robot competitions
Pedro Ribeiro
Search result presentation: supporting post-search navigation by integration of taxonomy data
As a result of additional semantic annotations and novel mining methods, Web site taxonomies are more and more available to machines, including search engines. Recent research shows that after a search result is clicked, users often continue navigating ... Keywords: clickstreams, search result presentation, taxonomies
Matthias Keller, Patrick Mühlschlegel, Hannes Hartenstein
Novel optical-fiber network management system in central office using RFID and LED navigation technologies
Optical IP services such as FTTH have been growing rapidly, leading to an urgent need to manage the optical fiber network from the central office. We have developed an optical-fiber distribution facility called an IDM. However, the changing FTTH environment ... Keywords: FTTH, RFID, automatic navigation system, human error
Masaki Waki; Shigenori Uruno; Yoshitaka Enomoto; Yuji Azuma
Proceedings of the 2008 IFAC Workshop on Navigation, Guidance and Control of Underwater Vehicles
Proceedings of the 2008 IFAC Workshop on Navigation, Guidance and Control of Underwater Vehicles Autonomous Underwater Multivehicle Control with Limited Communication: Theory and Experiment Daniel J. Klein underwater vehicles linked via underwater communi- cation. By treating heading angle as oscillator phase
Morgansen, Kristi
PARTICLE FILTERING AND CRAM ´ER-RAO LOWER BOUND FOR UNDERWATER NAVIGATION Rickard Karlsson, Fredrik-mail: {rickard,firstname.lastname@example.com Tobias Karlsson Saab Bofors Underwater Systems Box 910 SE-591 29 Motala relying on a dig- ital underwater terrain map and sonar measurements. The method is applicable for both
Gustafsson, Fredrik
Estimating the Remaining Useful Life of Residential Cory Welch and Brad Rogers, Navigant Consulting, Inc.
Estimating the Remaining Useful Life of Residential Appliances Cory Welch and Brad Rogers, Navigant. This paper describes a methodology for estimating the RUL of residential technologies using mortality data is that Weibull shape factors for many residential appliances were found to fall within a tight range
Using a dance pad to navigate through the virtual heritage environment of macquarie lighthouse, Sydney
In this paper we look at the potential of a novel navigational interface, a dance pad, to allow users to intuitively explore a virtual heritage environment. An immersive Virtual Reality environment has been created to learn about the historical background ... Keywords: USB dance pad, alternative HCI input devices, virtual heritage, virtual reality, virtual-immersive environments
Eric Fassbender; Debbie Richards
Adding semantic annotations, navigation paths and tour guides to existing virtual environments
Nowadays, more Virtual Environments (VEs) are becoming available on the Web. This means that VEs are becoming accessible to a larger and more diverse audience. It also means that it is more likely that the use of these VEs (i.e. how to interact with ... Keywords: navigation paths, semantic annotations, tour guides, virtual reality
Frederic Kleinermann; Olga De Troyer; Christophe Creelle; Bram Pellens
Evaluation of fighter evasive maneuvers combined with chaff utilization against proportional navigation missiles
In this paper, evasive actions of a fighter a missile employing proportional navigation are investigated. This paper is a part of our ongoing academic project, the Visual End-Game Simulation. In three dimensions, realistic, extended point-mass, generic ... Keywords: chaff, engagement simulation, fighter evasive maneuvers, missile countermeasures
Remzi Akda?; D. Turgay Altilar
Marine and Hydrokinetic Renewable Energy Devices, Potential Navigational Hazards and Mitigation Measures
On April 15, 2008, the Department of Energy (DOE) issued a Funding Opportunity Announcement for Advanced Water Power Projects which included a Topic Area for Marine and Hydrokinetic Renewable Energy Market Acceleration Projects. Within this Topic Area, DOE identified potential navigational impacts of marine and hydrokinetic renewable energy technologies and measures to prevent adverse impacts on navigation as a sub-topic area. DOE defines marine and hydrokinetic technologies as those capable of utilizing one or more of the following resource categories for energy generation: ocean waves; tides or ocean currents; free flowing water in rivers or streams; and energy generation from the differentials in ocean temperature. PCCI was awarded Cooperative Agreement DE-FC36-08GO18177 from the DOE to identify the potential navigational impacts and mitigation measures for marine hydrokinetic technologies. A technical report addressing our findings is available on this Science and Technology Information site under the Product Title, "Marine and Hydrokinetic Renewable Energy Technologies: Potential Navigational Impacts and Mitigation Measures". This product is a brochure, primarily for project developers, that summarizes important issues in that more comprehensive report, identifies locations where that report can be downloaded, and identifies points of contact for more information.
Studying spatial memory and map navigation performance on projector phones with peephole interaction
Smartphones are useful personal assistants and omnipresent communication devices. However, collaboration is not among their strengths. With the advent of embedded projectors this might change. We conducted a study with 56 participants to find out if ... Keywords: handheld projector, map navigation, peephole interaction, spatial memory, touch interaction
Bonifaz Kaufmann; David Ahlström
Combining speech and haptics for intuitive and efficient navigation through image databases
Given the size of todays professional image databases, the stan-dard approach to object- or theme-related image retrieval is to in-teractively navigate through the content. But as most users of such databases are designers or artists who do not have ... Keywords: content-based image retrieval, fusion of haptics, multimodal interface evaluation, speech, vision processing
Thomas Käster; Michael Pfeiffer; Christian Bauckhage
Proposed high speed packet switch for broadband integrated networks
The design of a high speed, broadband packet switch with two priority levels for application in integrated voice/data networks is presented. The packet switch can efficiently cope with 128 byte packets converging on it from eight 140 Mbit/s dynamic time ... Keywords: backbone network, broadband integrated services digital networks, high speed packet switch, voice/data integration
Krishna Thilakam; Ashok Jhunjhunwala
Atmospheric Circulation Effects on Wind Speed Variability at Turbine Height
Mean monthly wind speed at 70 m above ground level is investigated for 11 sites in Minnesota for the period 1995–2003. Wind speeds at these sites show significant spatial and temporal coherence, with prolonged periods of above- and below-normal ...
Katherine Klink
Ocean Wind Speed Climatology from Spaceborne SAR Imagery
Spaceborne synthetic aperture radar (SAR) imagery can make high-resolution (? 500 m) ocean wind speed measurements. We anticipate re-processing the full decade and a half of Radarsat-1 SAR imagery and generating a SAR wind speed archive. These data will ...
Frank M. Monaldo; Xiaofeng Li; William G. Pichel; Christopher R. Jackson
Turbine speed control for an ocean wave energy conversion system
In this work, a hydraulic turbine speed governor is proposed in view of its application in an isolated electric generation system based on an ocean wave energy converter (WEC). The proposed strategy is based on cascade closed-loop control combined with ... Keywords: Pelton turbine, cascade control, feedforward control, ocean wave energy, speed governor
Paula B. Garcia-Rosa; José Paulo V. S. Cunha; Fernando Lizarralde
Trends and Interannual Variability of Wind Speed Distributions in Minnesota
Near-surface wind speed variability is investigated at seven stations in and surrounding Minnesota for recent climate records of 22–35 yr in length. Analyses focus on mean annual wind speeds and on the 10th, 25th, 50th, 75th, and 90th percentiles ...
Estimation of Extreme Wind Speeds with Very Long Return Periods
Long series of hourly mean wind speeds and the maximum hourly 3-s gust are simulated for four sites in the British Isles in order to investigate methods for the determination of extreme wind speed events. The simulation is performed using a one-...
M. D. G. Dukes; J. P. Palutikof
High speed flow cytometric separation of viable cells
Hematopoietic cell populations are separated to provide cell sets and subsets as viable cells with high purity and high yields, based on the number of original cells present in the mixture. High-speed flow cytometry is employed using light characteristics of the cells to separate the cells, where high flow speeds are used to reduce the sorting time.
Sasaki, Dennis T. (Mountain View, CA); Van den Engh, Gerrit J. (Seattle, WA); Buckie, Anne-Marie (Margate, GB)
SUPER HIGH-SPEED MINIATURIZED PERMANENT MAGNET SYNCHRONOUS MOTOR by LIPING ZHENG B.S. Shanghai with the design of permanent magnet synchronous motors (PMSM) to operate at super-high speed with high efficiency the motor to have an efficiency reaching above 92%. This achieved efficiency indicated a significant
Wu, Shin-Tson
High Speed Rail in America Thomas Ducharme, Matt Schena,
://m.wikitravel.org/en/Frankfurt #12;Possible effects on Freight Rail · High speed rail usually hauls passengers, though new Resulting in improvement to those lines o Reducing operating costs due to sharing rail · Increase in freightHigh Speed Rail in America Thomas Ducharme, Matt Schena, and Dan Bellis #12;The US Current
Nagurney, Anna
Sasaki, D.T.; Van den Engh, G.J.; Buckie, A.M.
Intelligent acoustic rotor speed estimation for an autonomous helicopter
Acoustic sensing to gather information about a machine can be highly beneficial, but processing the data can be difficult. In this work, a variety of methodologies have been studied to extract rotor speed information from the sound signature of an autonomous ... Keywords: Acoustic sensing, Adaptive network-based fuzzy inference system, Artificial neural network, Feature selection, Genetic algorithm, Helicopter, Rotor speeds
Benjamin N. Passow; Mario A. Gongora; Adrian A. Hopgood; Sophy Smith
LQG Controller for a Variable Speed Pitch Regulated Wind Turbine
This paper deals with the design of LQG controllers for pitch regulated, variable speed wind turbines where the controller is used primarily for controlling the pitch angle through a collective pitch angle in the high wind speed in order to guarantee ... Keywords: LQG controller, Pitch control, Wind Trubine
Xingjia Yao; Shu Liu; Guangkun Shan; Zuoxia Xing; Changchun Guo; Chuanbao Yi
Routing for power minimization in the speed scaling model
We study network optimization that considers power minimization as an objective. Studies have shown that mechanisms such as speed scaling can significantly reduce the power consumption of telecommunication networks by matching the consumption of each ... Keywords: power saving, routing, speed scaling, wireline networks
Matthew Andrews; Antonio Fernández Anta; Lisa Zhang; Wenbo Zhao
New simulation speed record set on Sequoia | National Nuclear Security
National Nuclear Security Administration (NNSA)
New simulation speed record set on Sequoia | National Nuclear Security New simulation speed record set on Sequoia | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > New simulation speed record set on Sequoia New simulation speed record set on Sequoia Posted By Office of Public Affairs New simulation speed record set on Sequoia Computer scientists at Lawrence Livermore National Laboratory and
Variable-Speed Wind System Design : Final Report.
Almost from the onset of the development of wind energy conversion systems (WECS), it was known that variable-speed operation of the turbine would maximize energy capture. This study was commissioned to assess the cost, efficiency gain, reduction of the cost of energy (COE), and other operating implications of converting the existing hardware of a modern fixed-speed wind energy conversion system to variable-speed operation. The purpose of this study was to develop a preliminary design for the hardware required to allow variable-speed operation using a doubly-fed generator with an existing fixed-speed wind turbine design. The turbine selected for this study is the AWT-26 designed and built by Advanced Wind Turbines Inc. of Redmond, Washington. The lowest projected COE using this variable-speed generation system is projected to be $0.0499/kWh, compared to the lowest possible COE with fixed-speed generation which is projected to be $0.0546/kWh. This translates into a 8.6% reduction of the COE using this variable-speed generation option. The preliminary system design has advanced to where the printed circuit boards can be physically laid out based on the schematics and the system software can be written based on the control flow-charts. The core of hardware and software has been proven to be successful in earlier versions of VSG systems. The body of this report presents the results of the VSWG system development. Operation under normal and fault conditions is described in detail, the system performance for variable-speed operation is estimated and compared to the original fixed-speed system performance, and specifications for all system components (generator, power electronic converter, and system controller) are given. Costs for all components are estimated, and incremental system cost is compared to incremental energy production. Finally, operational features of the VSWG which are not available in the existing FSWG system are outlined.
Lauw, Hinan K.; Weigand, Claus H.; Marckx, Dallas A.; Electronic Power Conditioning, Inc.
4D frequency analysis of computational cameras for depth of field extension
Depth of field (DOF), the range of scene depths that appear sharp in a photograph, poses a fundamental tradeoff in photography---wide apertures are important to reduce imaging noise, but they also increase defocus blur. Recent advances in computational ... Keywords: Fourier analysis, computational camera, depth of field, light field
Anat Levin; Samuel W. Hasinoff; Paul Green; Frédo Durand; William T. Freeman
Real-Time Human Posture Reconstruction in Wireless Smart Camera Networks
While providing a variety of intriguing application opportunities, a vision sensor network poses three key challenges. High computation capacity is required for early vision functions to enable real-time performance. Wireless links limit image transmission ... Keywords: smart cameras, embedded vision systems, human posture estimation
Chen Wu; Hamid Aghajan; Richard Kleihorst
The Computation of Cloud-Base Height from Paired Whole-Sky Imaging Cameras
The authors have developed a novel approach to the extraction of cloud-base height (CBH) from pairs of whole-sky images. The core problem is to spatially register cloud fields from widely separated whole-sky imaging (WSI) cameras; this complete ...
Mark C. Allmen; W. Philip Kegelmeyer Jr.
A distributed many-camera system for multi-person tracking
This article presents a modular, distributed and scalable many-camera system designed towards tracking multiple people simultaneously in a natural human-robot interaction scenario set in an apartment mock-up. The described system employs 40 high-resolution ...
Claus Lenz; Thorsten Röder; Martin Eggers; Sikandar Amin; Thomas Kisler; Bernd Radig; Giorgio Panin; Alois Knoll
Capturing Village-level Heritages with a Hand-held Camera-Laser Fusion Sensor
Preserving a heritage as a digital archive is as important as preserving its physical structure. The digital preservation is essential for massive heritages which are often defenceless against various types of destruction and require frequent restorations. ... Keywords: Camera-laser calibration, Ego-motion estimation, Large-scale 3D reconstruction, Sensor fusion, e-Heritage
Yunsu Bok; Yekeun Jeong; Dong-Geol Choi; In So Kweon
Non-photorealistic camera: depth edge detection and stylized rendering using multi-flash imaging
We present a non-photorealistic rendering approach to capture and convey shape features of real-world scenes. We use a camera with multiple flashes that are strategically positioned to cast shadows along depth discontinuities in the scene. The projective-geometric ... Keywords: depth edges, image enhancement, non-photorealistic rendering
Ramesh Raskar; Kar-Han Tan; Rogerio Feris; Jingyi Yu; Matthew Turk
EFFECTIVENESS OF RED LIGHT CAMERAS A Texas Transportation Institute White Paper
1 EFFECTIVENESS OF RED LIGHT CAMERAS A Texas Transportation Institute White Paper By Brian Bochner and Troy Walden April 2010; corrected July 6, 2010 In This White Paper Background, education, and enforcement. This paper addresses only the enforcement component through use of red light
Augmented Reality: Enhanced personal autostereoscopic telepresence system using commodity depth cameras
This paper describes an enhanced telepresence system that offers fully dynamic, real-time 3D scene capture and continuous-viewpoint, head-tracked stereo 3D display without requiring the user to wear any tracking or viewing apparatus. We present a complete ... Keywords: Camera calibration, Color calibration, Filtering, Sensor fusion, Teleconferencing, Tracking
Andrew Maimone; Jonathan Bidwell; Kun Peng; Henry Fuchs
The intelligent control based on perceiving-acting cycle by using 3D-range camera
This paper discusses a integrated perceptual system for intelligent control of a service robot. The robot should be able to perceive the environment flexibly to realize intelligent behaviors. We focus on the perceptual system based on the perceiving-acting ... Keywords: 3D-range camera, arm robots, perceiving-acting cycle, spiking-neural network
Hiroyuki Masuta; Naoyuki Kubota
TeleTorchlight: remote pointing and annotation using a mobile camera projector
Remote support for physical tasks often takes a longer time and involves more mistakes than on-site support. The reason for this is that it is difficult for remote supporters to know what happened at the site and show how to operate briefly. In this ... Keywords: augmented reality, camera, mobile, projector, telecollaboration, telecommunication
Genta Suzuki; Scott Klemmer
Neuro-evolutive system for ego-motion estimation with a 3D camera
A neuro-evolutive system for mobile robot ego-motion estimation using time-of-flight (TOF) 3D camera readings is presented in this paper. It is composed of two modules. First, a Neural Gas adaptative algorithm is used to obtain a set of codevectors quantizing ...
Ivan Villaverde; Zelmar Echegoyen; Manuel Grańa
Evaluation of a Ground-Based Sky Camera System for Use inSurface Irradiance Measurement
This paper describes the evaluation of a ground-based sky camera system for studying the effect of clouds on the level of the ambient ultraviolet radiation. The system has been developed for research in the characterization of the effect of ...
Jeff Sabburg; Joe Wong
Optical Comb Generation for Streak Camera Calibration for Inertial Confinement Fusion Experiments
The National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL) is coming on-line to support physics experimentation for the U.S. Department of Energy (DOE) programs in Inertial Confinement Fusion (ICF) and Stockpile Stewardship (SS). Optical streak cameras are an integral part of the experimental diagnostics instrumentation at NIF. To accurately reduce streak camera data a highly accurate temporal calibration is required. This article describes a technique for simultaneously generating a precise +/- 2 ps optical marker pulse (fiducial reference) and trains of precisely timed, short-duration optical pulses (so-called "comb" pulse trains) that are suitable for the timing calibrations. These optical pulse generators are used with the LLNL optical streak cameras. They are small, portable light sources that, in the comb mode, produce a series of temporally short, uniformly spaced optical pulses, using a laser diode source. Comb generators have been produced with pulse-train repetition rates up to 10 GHz at 780 nm, and somewhat lower frequencies at 664 nm. Individual pulses can be as short as 25-ps FWHM. Signal output is via a fiber-optic connector on the front panel of the generator box. The optical signal is transported from comb generator to streak camera through multi-mode, graded-index optical fiber.
Ronald Justin, Terence Davies, Frans Janson, Bruce Marshall, Perry Bell, Daniel Kalantar, Joseph Kimbrough, Stephen Vernon, Oliver Sweningsen
Enabling technologies on hybrid camera networks for behavioral analysis of unattended indoor environments and their surroundings
This paper presents a layered network architecture and the enabling technologies for accomplishing vision-based behavioral analysis of unattended environments. Specifically the vision network covers both the attended environment and its surroundings ... Keywords: behaviour analysis, hybrid camera network, surveillance of unattended environments
Giovanni Gualdi; Andrea Prati; Rita Cucchiara; Edoardo Ardizzone; Marco La Cascia; Liliana Lo Presti; Marco Morana
The PANOPTIC Camera: A Plenoptic Sensor with Real-Time Omnidirectional Capability
A new biologically-inspired vision sensor made of one hundred "eyes" is presented, which is suitable for real-time acquisition and processing of 3-D image sequences. This device, named the Panoptic camera, consists of a layered arrangement of approximately ... Keywords: 3-D vision system, Computer vision, FPGA, Image processing hardware, Image rendering, Omnidirectional, Plenoptic, Polydioptric
Hossein Afshari; Laurent Jacques; Luigi Bagnato; Alexandre Schmid; Pierre Vandergheynst; Yusuf Leblebici
Procurement documentation for the beam characterization subsystem: pyrheliometer, digitizer, MODACS III, video camera. RADL item No. 3-4
Procurement documentation is given describing the basic features of the parts of a Beam Characterization System of a solar central receiver facility. Parts include pyrheliometers, a digitizer, components of the data acquisition and control system, and video cameras. The specification establishing the performance and acceptance requirements for the video cameras are given. (LEW)
Not Available
Use of a wearable camera system in conversation : toward a companion tool for social-emotional learning in autism
Self-Cam is a wearable camera system that allows a person to collect video and audio from the movements of her own head and face. Like looking in a mirror, live feedback or video playback from the camera can be used to ...
Teeters, Alea Chandler
Virtual camera calibration and stereo correspondence of single-lens bi-prism stereovision system using geometrical approach
This paper proposes a simple geometrical ray approach to calibrate the extrinsic parameters of the virtual cameras and solve the stereo correspondence problem of the single-lens bi-prism stereovision system. Each images captured using this system can ... Keywords: Correspondence, Epipolar geometry, Prism, Stereovision, Virtual camera
Kah Bin Lim, Wei Loon Kee, Daolei Wang
Analyzing the level of presence while navigating in a virtual environment during an fMRI scan
We have conducted an fMRI research using virtual reality to study the level of presence that subjects experience during the navigation through a virtual environment, in comparison with the presence felt during a video or a photograph viewing task. The ... Keywords: SUS questionnaire, fMRI, navigation, presence, virtual reality
Miriam Clemente; Alejandro Rodríguez; Beatriz Rey; Aina Rodríguez; Rosa M. Bańos; Cristina Botella; Mariano Alcańiz; César Ávila
Cortical dynamics of navigation and steering in natural scenes: Motion-based object segmentation, heading, and obstacle avoidance
Visually guided navigation through a cluttered natural scene is a challenging problem that animals and humans accomplish with ease. The ViSTARS neural model proposes how primates use motion information to segment objects and determine heading for purposes ... Keywords: MST, MT, Motion segmentation, Navigation, Object tracking, Optic flow, Steering
N. Andrew Browning; Stephen Grossberg; Ennio Mingolla
Spatial and Temporal Patterns of Global Onshore Wind Speed Distribution
Wind power, a renewable energy source, can play an important role in electrical energy generation. Information regarding wind energy potential is important both for energy related modeling and for decision-making in the policy community. While wind speed datasets with high spatial and temporal resolution are often ultimately used for detailed planning, simpler assumptions are often used in analysis work. An accurate representation of the wind speed frequency distribution is needed in order to properly characterize wind energy potential. Using a power density method, this study estimated global variation in wind parameters as fitted to a Weibull density function using NCEP/CFSR reanalysis data. The estimated Weibull distribution performs well in fitting the time series wind speed data at the global level according to R2, root mean square error, and power density error. The spatial, decadal, and seasonal patterns of wind speed distribution were then evaluated. We also analyzed the potential error in wind power estimation when a commonly assumed Rayleigh distribution (Weibull k = 2) is used. We find that the assumption of the same Weibull parameter across large regions can result in substantial errors. While large-scale wind speed data is often presented in the form of average wind speeds, these results highlight the need to also provide information on the wind speed distribution.
Zhou, Yuyu; Smith, Steven J.
Vermont Standard Offer for Qualifying SPEED Resources | Department of
Vermont Standard Offer for Qualifying SPEED Resources Vermont Standard Offer for Qualifying SPEED Resources Vermont Standard Offer for Qualifying SPEED Resources < Back Eligibility Agricultural Commercial Industrial Savings Category Bioenergy Water Buying & Making Electricity Solar Home Weatherization Wind Maximum Rebate Varies by technology Program Info Start Date 09/30/2009 State Vermont Program Type Performance-Based Incentive Rebate Amount Varies by technology Provider VEPP, Inc. '''''Note: The first RFP for the new competitive award process has passed; applications were accepted through May 1, 2013. See the program web site for information regarding future solicitations. ''''' In May 2009, Vermont enacted legislation requiring all Vermont retail electricity providers to purchase electricity generated by eligible
Coal-fueled high-speed diesel engine development
The objectives of this program are to study combustion feasibility by running Series 149 engine tests at high speeds with a fuel injection and combustion system designed for coal-water-slurry (CWS). The following criteria will be used to judge feasibility: (1) engine operation for sustained periods over the load range at speeds from 600 to 1900 rpm. The 149 engine for mine-haul trucks has a rated speed of 1900 rpm; (2) reasonable fuel economy and coal burnout rate; (3) reasonable cost of the engine design concept and CWS fuel compared to future oil prices.
Short-Term Wind Speed Forecasting for Power System Operations
Global large scale penetration of wind energy is accompanied by significant challenges due to the intermittent and unstable nature of wind. High quality short-term wind speed forecasting is critical to reliable and secure power system operations. This paper gives an overview of the current status of worldwide wind power developments and future trends, and reviews some statistical short-term wind speed forecasting models, including traditional time series models and advanced space-time statistical models. It also discusses the evaluation of forecast accuracy, in particular the need for realistic loss functions. New challenges in wind speed forecasting regarding ramp events and offshore wind farms are also presented.
Xinxin Zhu; Marc G. Genton
Influence of field potential on the speed of light
The paper discusses the affection of the scalar potential on the speed of light in the electromagnetic field, by means of the characteristics of octonion. In the octonion space, the radius vector is combined with the integral of field potentials to become one new radius vector. When the field potentials can not be neglected, the new radius vector will cause the prediction to departure slightly from the theoretical value of the speed of light. The results explain why the speed of light varies in diversiform optical waveguide. And there exist negative refractive indexes due to different scalar potentials in the gravitational field and electromagnetic field.
Zi-Hua Weng
The constancy, or otherwise, of the speed of light
New varying speed of light (VSL) theories as alternatives to the inflationary model of the universe are discussed and evidence for a varying speed of light reviewed. Work linked with VSL but primarily concerned with deriving Planck's black body energy distribution for a gas-like aether using Maxwell statistics is considered also. Doubly Special Relativity, a modification of special relativity to account for observer dependent quantum effects at the Planck scale, is introduced and it is found that a varying speed of light above a threshold frequency is a necessity for this theory.
Daniel J. Farrell; J. Dunning-Davies
High-pressure experiments and chemical kinetics modeling were performed for laminar spherically expanding flames for methane/air, ethane/air, methane/ethane/air and propane/air mixtures at pressures between 1 and 10 atm and equivalence ratios ranging from 0.7 to 1.3. All experiments were performed in a new flame speed facility capable of withstanding initial pressures up to 15 atm. The facility consists of a cylindrical pressure vessel rated up to 2200 psi. Vacuums down to 30 mTorr were produced before each experiment, and mixtures were created using the partial pressure method. Ignition was obtained by an automotive coil and a constant current power supply capable of reducing the spark energy close to the minimum ignition energy. Optical cine-photography was provided via a Z-type schlieren set up and a high-speed camera (2000 fps). A full description of the facility is given including a pressure rating and a computational conjugate heat transfer analysis predicting temperature rises at the walls. Additionally, a detailed uncertainty analysis revealed total uncertainty in measured flame speed of approximately +-0.7 cm/s. This study includes first-ever measurements of methane/ethane flame speeds at elevated pressures as well as unique high pressure ethane flame speed measurements. Three chemical kinetic models were used and compared against measured flame velocities. GRI 3.0 performed remarkably well even for high-pressure ethane flames. The C5 mechanism performed acceptably at low pressure conditions and under-predicted the experimental data at elevated pressures. Measured Markstein lengths of atmospheric methane/air flames were compared against values found in the literature. In this study, Markstein lengths increased for methane/air flames from fuel lean to fuel rich. A reverse trend was observed for ethane/air mixtures with the Markstein length decreasing from fuel lean to fuel rich conditions. Flame cellularity was observed for mixtures at elevated pressures. For both methane and ethane, hydrodynamic instabilities dominated at stoichiometric conditions. Flame acceleration was clearly visible and used to determine the onset of cellular instabilities. The onset of flame acceleration for each high-pressure experiment was recorded.
De Vries, Jaap
Method and system for determining induction motor speed ...
A non-linear, semi-parametric neural network-based adaptive filter is utilized to determine the dynamic speed of a rotating rotor within an induction motor, without ...
High speed air pneumatic wind shield wiping design
In this creative design process a number of designs were constructed, implemented and tested in order to assess the feasibility of using high speed to create a curtain to repel the rain from the automobile windshield instead ...
Heyward, Moses A
Tilt Rotor Aeromechanics Phenomena in Low Speed Flight
This work investigates important aeromechanics phenomena affecting the V-22 tilt rotor in low speed sideward flight or while hovering in quartering or crosswind conditions. These phenomena, such as pitch-up with sideslip and increased power required ...
Mark A. Potsdam; Mark J. Silva
Using ADCP Background Sound Levels to Estimate Wind Speed
It is well known that ambient sound is generated by wind through the process of wave breaking and bubble injection. The resulting sound levels are highly correlated with wind speed and, even though the physical process is not fully understood, ...
Len Zedel
High-Speed Combustion and Detonation (HSCD) | Argonne Leadership...
in a hydrogen-oxygen mixture in a square channel, performed within the high-speed combustion and detonation project (HSCD). Pseudo-schlieren image of a temperature field....
Simulated Atmospheric Rime Icing of Some Wind Speed Sensors
Four commercially available wind speed sensors have been tested in an icing wind tunnel to determine the relative susceptibility of each to atmospheric icing and to determine the influence of ire accumulations upon the operation and accuracy of ...
E. M. Gates; W. C. Thompson
Practical speed meter designs for QND gravitational-wave interferometers
In the quest to develop viable designs for third-generation optical interferometric gravitational-wave detectors (e.g., LIGO-III and EURO), one strategy is to monitor the relative momentum or speed of the test-mass mirrors, rather than monitoring their relative position. A previous paper analyzed a straightforward but impractical design for a {\\it speed-meter interferometer} that accomplishes this. This paper describes some practical variants of speed-meter interferometers. Like the original interferometric speed meter, these designs {\\it in principle} can beat the gravitational-wave standard quantum limit (SQL) by an arbitrarily large amount, over an arbitrarily wide range of frequencies. These variants essentially consist of a Michelson interferometer plus an extra "sloshing" cavity that sends the signal back into the interferometer with opposite phase shift, thereby cancelling the position information and leaving a net phase shift proportional to the relative velocity. {\\it In practice}, the sensitivity of...
Purdue, P; Purdue, Patricia; Chen, Yanbei
Sliding mode control strategy for variable speed wind turbine
The efficiency of the wind power conversions systems can be greatly improved using an appropriate control algorithm. In this work, a robust control for variable speed wind power generation that incorporates a doubly feed induction generator is described. ...
Oscar Barambones; Jose Maria Gonzalez De Durana
Microbenchmark Performance Comparison of High-Speed Cluster Interconnects
High-speed cluster interconnects Myrinet, Quadrics, and InfiniBand achieve low latency and high bandwidth with low host overhead. However, they show quite different performance behaviors when handling communication buffer reuse patterns.
Jiuxing Liu; Balasubramanian Chandrasekaran; Weikuan Yu; Jiesheng Wu; Darius Buntinas; Sushmitha Kini; Dhabaleswar K. Panda; Pete Wyckoff
Review of Weibull Statistics for Estimation of Wind Speed Distributions
A statistical distribution commonly used for describing measured wind speed data is the Weibull distribution. A review of the methods found in the statistical literature for the purpose of estimation of the parameters in Weibull distributions is ...
K. Conradsen; L. B. Nielsen; L. P. Prahm
Weibull Statistics of Wind Speed over the Ocean
The probability distribution of wind speed data over the world's oceans is studied using a two-parameter Weibull distribution. The parameters are estimated following a linearized least-squares approach. The seasonal and latitudinal variation are ...
Edgar G. Pavia; James J. O'Brien
Design and Implementation of High Speed Memory in 130 nm
This paper deals with the design and analysis of high speed SRAM memory using ATD (Address Transition Detector) technique in 130 nm with the capacitive load of the memory is 5pF
Sampath Kumar; Arti Noor; Sanjay Kr. Singh
Variable Speed Fan Retrofits for Computer Room Air Conditioners
Variable-Speed Fan Retrofits for Computer-Room Air Conditioners Prepared for the U.S. Department of Energy Federal Energy Management Program Technology Case Study Bulletin By...
Global Estimates of Extreme Wind Speed and Wave Height
A long-term dataset of satellite altimeter measurements of significant wave height and wind speed, spanning 23 years, is analyzed to determine extreme values corresponding to a 100-yr return period. The analysis considers the suitability of both ...
J. Vinoth; I. R. Young
High speed imaging of transient non-Newtonian fluid phenomena
In this thesis, I investigate the utility of high speed imaging for gaining scientific insight into the nature of short-duration transient fluid phenomena, specifically applied to the Kaye effect. The Kaye effect, noted ...
Gallup, Benjamin H. (Benjamin Hodsdon), 1982-
Adaptive congestion control of high speed ATM networks
Proportional control methods of controlling congestion in high speed ATM networks fail to achieve the desired performance due to the action delays, nonlinearities, and uncertainties in control loop. In this paper an adaptive minimum variance controller ...
Morteza Mosavi; Mahdi Jalili-Kharaajoo
Advanced Variable Speed Air-Source Integrated Heat Pump
variable speed air-source variable speed air-source integrated heat pump (AS-IHP) - CRADA Van D. Baxter Oak Ridge National Laboratory email@example.com; 865-574-2104 April 3, 2013 Development of advanced HVAC/WH system options for efficient residential or small commercial buildings, new const. or retrofit * ET R&D project in support of DOE/BTO Goal of 50% Reduction in Building Energy Use by 2030 IHP concept - all HVAC & WH services integrated into
Adjustable Speed Drive (ASD) System Design Specifications Guide Book
This report presents a comprehensive assessment of the applications of adjustable speed drives (ASDs) in motor-driven systems in commercial and industrial environments. The power electronics-type ASD is continuously improving process control. An ASD controls fluid, gas, material, or parts flow by controlling motor speed.BackgroundIn the past, conventional process flow control for liquids and gases used valves, vanes, dampers, or registers. In these systems, ...
Current Densities in speed analyzer with different symmetries
A comparative analysis of the currents in speed analyzer of speeds is made with different symmetries. Three kinds of symmetries are considered; plane, cylindrical and spherical. The analyzers considered are formed by threes electrodes, the selector grid, the discriminator and the collector. The selector grid has a negative potential and for the coulombian effect the space charge is formed with the ionic thermal bath. Using kinetic theory a strongly non linear differential equation is obtained which is solved by numerical calculation.
Valdeblanquez, E. [Ciclo Basico, Departamento de Fisica, Apartado 4011- A 526, Universidad del Zulia, Facultad de Ingenieria, Maracaibo, Edo. Zulia (Venezuela); Centro de Investigacion de Matematicas Aplicadas, CIMA, Apartado 10486, Universidad del Zulia, Facultad de Ingenieria, Maracaibo, Edo. Zulia (Venezuela)
f(R) cosmological solutions with varying speed of light
We consider f(R) modified gravity theories for describing varying speed of light in a spatially flat FRW model, and find some exact solutions. Also we examine the dynamics of this model by dynamical system method assuming a LambdaCDM background and we find some exact solutions by considering the character of critical points of the theory in both formalisms. The behaviour of the speed of light is obtained.
Azam Izadi; Ali Shojai
Carrying freight on high-speed rail lines
Under the current economic climate it is expected that any new high-speed rail line in the US would be constructed as a public/private partnership, requiring substantial private investment, and thus the expectation of reasonable profits. To date, proposed high-speed rail lines have failed to attract sufficient investment to create any new starts, in great part due to the conclusion that these systems would not likely cover their capital and operating costs and also provide reasonable profit for investors. Studies of the economic potential of US high-speed rail lines have commonly considered them as passenger carriers only, depending solely on ridership as a source of revenue. Yet is likely that significant revenue potential exists for carrying higher value freight as well--perhaps enough to substantially improve the economic viability of certain high-speed operations. Some basic technical aspects of carrying freight on high-speed rail lines are presented, along with an analysis to estimate the quantity of freight that may be technically practical, and thus potentially economically viable, for a high-speed train to carry.
Plotkin, D. [Army Construction Engineering Research Lab., Champaign, IL (United States)
Comparison of Synthetic Aperture Radar–Derived Wind Speeds with Buoy Wind Speeds along the Mountainous Alaskan Coast
Satellite-borne synthetic aperture radar (SAR) offers the potential for remotely sensing surface wind speed both over the open sea and in close proximity to the coast. The resolution improvement of SAR over scatterometers is of particular ...
C. M. Fisher; G. S. Young; N. S. Winstead; J. D. Haqq-Misra
High Speed Trains for California (Volume II: Detailed Segment Descriptions, Cost Estimates, and Travel Time Calculations)
~ o~ CalSpeed:Capital Cost Estimates OAKLAND-RICHMOND (SP r/minutes). CalSpeed:Capital Cost Estimates HERCULES-FAIRFIELDCalSpeed:Capital Cost Estimates GRAPEVINE:5.0% ALTERNATIVE
Hall, Peter; Leavitt, Dan; Vaca, Erin
High-Speed Rail in California: A Cost-Benefit Analysis
Specific Aspects of High-Speed Rail in Connection with A irEffects of High-Speed Rail Stations and Implications forTexas Triangle High Speed Rail Study. Houston, TX: Texas
Kockelman, Kara
Video Camera Use at Nuclear Power Plants: Tools for Increasing Productivity and Reducing Radiation Exposure: Tools for Increasing Pr oductivity and Reducing Radiation Exposure
Nuclear power plants have increased the use of industrial video cameras as support tools for a variety of plant operations and outage tasks. This survey on utility use of video cameras, the equipment being used, and the benefits derived found that the video camera is an important tool for reducing radiation exposure and improving productivity through more efficient use of personnel.
All Sky Cameras for the characterization of the Cherenkov Telescope Array candidate sites
The All Sky Camera (ASC) was developed as a universal device for the monitoring of the night sky quality. Eight ASCs are already installed and measure night sky parameters at eight of the candidate sites of the Cherenkov Telescope Array (CTA) gamma-ray observatory. The ACS system consists of an astronomical CCD camera, a fish eye lens, a control computer and associated electronics. The measurement is carried out during astronomical night. The images are automatically taken every 5 minutes and automatically processed using the control computer of the device. The analysis results are the cloud fraction (the percentage of the sky covered by clouds) and night sky brightness (in mag/arcsec$^{2}$)
Mandát, Dušan; Ebr, Jan; Hrabovský, Miroslav; Prouza, Michael; Bulik, Tomasz; Allekotte, Ingomar
MONICA: a compact, portable dual gamma camera system for mouse whole-body imaging
Introduction We describe a compact, portable dual-gamma camera system (named "MONICA" for MObile Nuclear Imaging CAmeras) for visualizing and analyzing the whole-body biodistribution of putative diagnostic and therapeutic single photon emitting radiotracers in animals the size of mice. Methods Two identical, miniature pixelated NaI(Tl) gamma cameras were fabricated and installed ?looking up? through the tabletop of a compact portable cart. Mice are placed directly on the tabletop for imaging. Camera imaging performance was evaluated with phantoms and field performance was evaluated in a weeklong In-111 imaging study performed in a mouse tumor xenograft model. Results Tc-99m performance measurements, using a photopeak energy window of 140 keV?10%, yielded the following results: spatial resolution (FWHM at 1 cm), 2.2 mm; sensitivity, 149 cps (counts per seconds)/MBq (5.5 cps/?Ci); energy resolution (FWHM, full width at half maximum), 10.8%; count rate linearity (count rate vs. activity), r2=0.99 for 0?185 MBq (0?5 mCi) in the field of view (FOV); spatial uniformity, <3% count rate variation across the FOV. Tumor and whole-body distributions of the In-111 agent were well visualized in all animals in 5-min images acquired throughout the 168-h study period. Conclusion Performance measurements indicate that MONICA is well suited to whole-body single photon mouse imaging. The field study suggests that inter-device communications and user-oriented interfaces included in the MONICA design facilitate use of the system in practice. We believe that MONICA may be particularly useful early in the (cancer) drug development cycle where basic whole-body biodistribution data can direct future development of the agent under study and where logistical factors, e.g., limited imaging space, portability and, potentially, cost are important.
Choyke, Peter L.; Xia, Wenze; Seidel, Jurgen; Kakareka, John W.; Pohida, Thomas J.; Milenic, Diane E.; Proffitt, James; Majewski, Stan; Weisenberger, Andrew G.; Green, Michael V.
Operation and maintenance manual for the high resolution stereoscopic video camera system (HRSVS) system 6230
The High Resolution Stereoscopic Video Cameral System (HRSVS),system 6230, is a stereoscopic camera system that will be used as an end effector on the LDUA to perform surveillance and inspection activities within Hanford waste tanks. It is attached to the LDUA by means of a Tool Interface Plate (TIP), which provides a feed through for all electrical and pneumatic utilities needed by the end effector to operate.
Pardini, A.F., Westinghouse Hanford
The computation of cloud base height from paired whole-sky imaging cameras
A major goal for global change studies is to improve the accuracy of general circulation models (GCMs) capable of predicting the timing and magnitude of greenhouse gas-induced global warming. Research has shown that cloud radiative feedback is the single most important effect determining the magnitude of possible climate responses to human activity. Of particular value to reducing the uncertainties associated with cloud-radiation interactions is the measurement of cloud base height (CBH), both because it is a dominant factor in determining the infrared radiative properties of clouds with respect to the earth`s surface and lower atmosphere and because CBHs are essential to measuring cloud cover fraction. We have developed a novel approach to the extraction of cloud base height from pairs of whole sky imaging (WSI) cameras. The core problem is to spatially register cloud fields from widely separated WSI cameras; this complete, triangulation provides the CBH measurements. The wide camera separation (necessary to cover the desired observation area) and the self-similarity of clouds defeats all standard matching algorithms when applied to static views of the sky. To address this, our approach is based on optical flow methods that exploit the fact that modern WSIs provide sequences of images. We will describe the algorithm and present its performance as evaluated both on real data validated by ceilometer measurements and on a variety of simulated cases.
Allmen, M.C.; Kegelmeyer, W.P. Jr.
Synchroscan streak camera imaging at a 15-MeV photoinjector with emittance exchange
At the Fermilab A0 photoinjector facility, bunch-length measurements of the laser micropulse and the e-beam micropulse have been done in the past with a fast single-sweep module of the Hamamatsu C5680 streak camera with an intrinsic shot-to-shot trigger jitter of 10 to 20 ps. We have upgraded the camera system with the synchroscan module tuned to 81.25 MHz to provide synchronous summing capability with less than 1.5-ps FWHM trigger jitter and a phase-locked delay box to provide phase stability of {approx}1 ps over 10s of minutes. These steps allowed us to measure both the UV laser pulse train at 263 nm and the e-beam via optical transition radiation (OTR). Due to the low electron beam energies and OTR signals, we typically summed over 50 micropulses with 0.25-1 nC per micropulse. The phase-locked delay box allowed us to assess chromatic temporal effects and instigated another upgrade to an all-mirror input optics barrel. In addition, we added a slow sweep horizontal deflection plug-in unit to provide dual-sweep capability for the streak camera. We report on a series of measurements made during the commissioning of these upgrades including bunch-length and phase effects using the emittance exchange beamline and simultaneous imaging of a UV drive laser component, OTR, and the 800-nm diagnostics laser.
Lumpkin, A.H.; Ruan, J.; Thurman-Keup, R.; /Fermilab
Multi-view Hockey Tracking with Trajectory Smoothing and Camera Selection
We address the problem of multi-view multi-target tracking using multiple stationary cameras in the application of hockey tracking and test the approach with data from two cameras. The system is based on the previous work by Okuma et al. [50]. We replace AdaBoost detection with blob detection in both image coordinate systems after background subtraction. The sets of blob-detection results are then mapped to the rink coordinate system using a homography transformation. These observations are further merged into the final detection result which will be incorporated into the particle filter. In addition, we extend the particle filter to use multiple observation models, each corresponding to a view. An observation likelihood and a reference color model are also maintained for each player in each view and are updated only when the player is not occluded in that view. As a result of the expanded coverage range and multiple perspectives in the multi-view tracking, even when the target is occluded in one view, it still can be tracked as long as it is visible from another view. The multi-view tracking data are further processed by trajectory smoothing using the Maximum a posteriori smoother. Finally, automatic camera selection is performed using the Hidden Markov Model to create personalized video programs. ii Table of Contents Abstract................................. ii
Lan Wu
In vivo breast sound-speed imaging with ultrasound tomography
We discuss a bent-ray ultrasound tomography algorithm with total-variation (TV) regularization. We have applied this algorithm to 61 in vivo breast datasets collected with our in-house clinical prototype for imaging sound-speed distributions in the breast. Our analysis showed that TV regularization could preserve sharper lesion edges than the classic Tikhonov regularization. Furthermore, the image quality of our TV bent-ray sound-speed tomograms was superior to that of the straight-ray counterparts for all types of breasts within BI-RADS density categories 1-4. For all four breast types from fatty to dense, the improvements for average sharpness (in the unit of (m{center_dot} s) {sup -1}) of lesion edges in our TV bent-ray tomograms are between 2.1 to 3.4 fold compared to the straight ray tomograms. Reconstructed sound-speed tomograms illustrated that our algorithm could successfully image fatty and glandular tissues within the breast. We calculated the mean sound-speed values for fatty tissue and breast parenchyma as 1422 {+-} 9 mls (mean{+-} SD) and1487 {+-} 21 mls, respectively. Based on 32 lesions in a cohort of 61 patients, we also found that the mean sound-speed for malignant breast lesions (1548{+-}17 mls) was higher, on average, than that of benign ones (1513{+-}27 mls) (one-sided pspeed tomograms can be used to assess breast density (, and therefore, breast cancer risk), as well as detect and help differentiate breast lesions. Finally, our sound-speed tomograms may also be a useful tool to monitor clinical response of breast cancer patients to neo-adjuvant chemotherapy.
Huang, Lianjie [Los Alamos National Laboratory; Li, Cuiping [KARMANOS CANCER INSTITUTE; Duric, Neb [KARMANOS CANCER INSTITUTE; Littrup, Peter [KARMONOS CANCER INSTITUTE
Camera Recognition
... Venezuela 480,623 Colombia 456,778 South Korea 410,904 Argentina 355,504 Israel 323,523 Bahamas 265,075 Dominican Republic 231,861 ...
Autonomous aerial refueling of UAVS utilizing a vision based navigation system
The major technological obstacle to be overcome for practical and reliable autonomous probe-and-drogue aerial refueling is obtaining accurate relative position and attitude measurements during the docking phase. An integrated controller-sensor-navigation system for this task must be robust and possess good disturbance rejection properties. Previous attempts to solve this problem have used video servoing with pattern recognition algorithms and the differential Global Positioning System. This thesis seeks to determine the feasibility of autonomous aerial refueling by developing a robust docking controller and integrating it with the relative position and attitude measurements from a novel Vision-based Navigation (VisNav) sensor. VisNav accurately determines the line of sight vector between a positioning sensing diode and a target configured with multiple light emitting diode beacons. A study is conducted to determine the best number and placement of the beacons on the drogue and the best location to mount the sensor on an Unmanned Air Vehicle (UAV). Optimal Nonzero Set Point and optimal Command Generator Tracker controllers are developed and used to simulate six degree-of-freedom docking maneuvers using dynamical system models of a UAV and a refueling drogue. Test cases for stationary and moving drogues in atmospheric turbulence are evaluated in terms of docking position errors, control effort, control rate, and quadratic cost. Simulation results demonstrate that a Proportional Integral Filter Command Generator Tracker controller, coupled with the VisNav sensor and navigation system, provides a viable candidate solution to the autonomous aerial refueling problem. The beacon lights can be placed in the location of lights currently on the drogue, and the sensor can be placed at the base of the refueling probe on the UAV.
Kimmett, Jennifer Jones
Low Wind Speed Technology Phase II: Investigation of the Application of Medium-Voltage Variable-Speed Drive Technology to Improve the Cost of Energy from Low Wind Speed Turbines; Behnke, Erdman and Whitaker Engineering, Inc.
This fact sheet describes a subcontract with Behnke, Erdman & Whitaker Engineering, Inc. to test the feasibility of applying medium-voltage variable-speed drive technology to low wind speed turbines.
A Sensor-based Long Baseline Position and Velocity Navigation Filter for Underwater Vehicles
This paper presents a novel Long Baseline (LBL) position and velocity navigation filter for underwater vehicles based directly on the sensor measurements. The solution departs from previous approaches as the range measurements are explicitly embedded in the filter design, therefore avoiding inversion algorithms. Moreover, the nonlinear system dynamics are considered to their full extent and no linearizations are carried out whatsoever. The filter error dynamics are globally asymptotically stable (GAS) and it is shown, under simulation environment, that the filter achieves similar performance to the Extended Kalman Filter (EKF) and outperforms linear position and velocity filters based on algebraic estimates of the position obtained from the range measurements.
Batista, Pedro; Oliveira, Paulo
Scalable multi-view stereo camera array for real world real-time image capture and three-dimensional displays
The number of three-dimensional displays available is escalating and yet the capturing devices for multiple view content are focused on either single camera precision rigs that are limited to stationary objects or the use ...
Hill, Samuel L. (Samuel Lincoln), 1978-
Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways
Low-Speed Vehicle Low-Speed Vehicle Access to Roadways to someone by E-mail Share Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on Facebook Tweet about Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on Twitter Bookmark Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on Google Bookmark Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on Delicious Rank Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on Digg Find More places to share Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Low-Speed Vehicle Access to Roadways Low-speed vehicles may not operate on roads with posted speed limits of
Low-Speed Vehicle Low-Speed Vehicle Access to Roadways to someone by E-mail Share Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on Facebook Tweet about Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on Twitter Bookmark Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on Google Bookmark Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on Delicious Rank Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on Digg Find More places to share Alternative Fuels Data Center: Low-Speed Vehicle Access to Roadways on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Low-Speed Vehicle Access to Roadways Low-speed vehicles are only allowed access to roadways with speeds limits
Some links on this page may take you to non-federal websites. Their policies may differ from this site.
Website Policies and Important Links
Search capabilities provided by DOE/OSTI