Towards a NMR implementation of a quantum lattice gas algorithm

Abstract: Recent theoretical results suggest that an array of quantum information processors communicating via classical channels can be used to solve fluid dynamics problems. Quantum lattice-gas algorithms (QLGA) running on such architectures have been shown to solve the diffusion equation and the nonlinear Burgers equations. In this report, we describe progress towards an ensemble nuclear magnetic resonance (NMR) implementation of a QLGA that solves the diffusion equation. The methods rely on NMR techniques to encode an initial mass density into an ensemble of two-qubit quantum information processors. Using standard pulse techniques, the mass density can then manipulated and evolved through the steps of the algorithm. We provide the experimental results of our first attempt to realize the NMR implementation. The results qualitatively follow the ideal simulation, but the observed implementation errors highlight the need for improved control

toward a nmr implement of a quantum lattic ga algorithm
 recent theoret result suggest that an array of quantum inform processor commun via classic channel can be use to solv fluid dynam problem . quantum lattice-ga algorithm ( qlga ) run on such architectur have been shown to solv the diffus equat and the nonlinear burger equat . in thi report , we describ progress toward an ensembl nuclear magnet reson ( nmr ) implement of a qlga that solv the diffus equat . the method reli on nmr techniqu to encod an initi mass densiti into an ensembl of two-qubit quantum inform processor . use standard puls techniqu , the mass densiti can then manipul and evolv through the step of the algorithm . we provid the experiment result of our first attempt to realiz the nmr implement . the result qualit follow the ideal simul , but the observ implement error highlight the need for improv control


Banking on SMA funds [separately managed accounts]

Abstract: From investment management to technology to back-office services, outsourcers are elbowing their way into the SMA business. Small banks are paying attention-and hoping to reap the rewards

bank on sma fund [ separ manag account ]
 from invest manag to technolog to back-offic servic , outsourc are elbow their way into the sma busi . small bank are pay attention-and hope to reap the reward

separately managed accounts
investment management
technology
back-office services
outsourcers
small banks


Design methodology for diagnostic strategies for industrial systems

Abstract: This paper presents a method for the construction of diagnostic systems for complex industrial applications. The approach has been explicitely developed to shorten the design cycle and meet some specific requirements, such as modularity, flexibility, and the possibility of merging many different sources of information. The method allows one to consider multiple simultaneous failures and is specifically designed to make easier the coordination and simplification of local diagnostic algorithms developed by different teams

design methodolog for diagnost strategi for industri system
 thi paper present a method for the construct of diagnost system for complex industri applic . the approach ha been explicit develop to shorten the design cycl and meet some specif requir , such as modular , flexibl , and the possibl of merg mani differ sourc of inform . the method allow one to consid multipl simultan failur and is specif design to make easier the coordin and simplif of local diagnost algorithm develop by differ team

design methodology
diagnostic strategies
industrial systems
modularity
local diagnostic algorithms


A shy invariant of graphs

Abstract: Moving from a well known result of P.L. Hammer et al. (1982), we introduce a new graph invariant, say lambda (G) referring to any graph G. It is a non-negative integer which is non-zero whenever G contains particular induced odd cycles or, equivalently, admits a particular minimum clique-partition. We show that).(G) can be efficiently evaluated and that its determination allows one to reduce the hard problem of computing a minimum clique-cover of a graph to an identical problem of smaller size and special structure. Furthermore, one has alpha (G) <or= theta (G) - lambda (G), where alpha (G) and theta (G) respectively denote the cardinality of a maximum stable set of G and of a minimum clique-partition of G

a shi invari of graph
 move from a well known result of p.l. hammer et al . ( 1982 ) , we introduc a new graph invari , say lambda ( g ) refer to ani graph g. it is a non-neg integ which is non-zero whenev g contain particular induc odd cycl or , equival , admit a particular minimum clique-partit . we show that).(g ) can be effici evalu and that it determin allow one to reduc the hard problem of comput a minimum clique-cov of a graph to an ident problem of smaller size and special structur . furthermor , one ha alpha ( g ) < or= theta ( g ) - lambda ( g ) , where alpha ( g ) and theta ( g ) respect denot the cardin of a maximum stabl set of g and of a minimum clique-partit of g

graph invariant
induced odd cycles
minimum clique-partition
minimum clique-cover
cardinality
maximum stable set


PacketVideo. One step ahead of the streaming wireless market

Abstract: Go beyond the hype, however, and it's clear that PacketVideo is making strides in delivering streaming multimedia content to wireless devices. For one thing, its technology, based on the industry-standard Motion Pictures Expert Group 4 (MPEG-4) video encoder/decoder, actually works as promised. Secondly, the company has forged a broad-based band of alliances that not only will eventually help it reach potential customers down the road, but provides it financial support until the company can ramp up sales. The list of PacketVideo's technology partners who are also investors-and who have pumped more than $121 million into the company-includes not just wireless device manufacturers, but content providers and semiconductor vendors, all of whom stand to benefit by increased sales of handheld wireless terminals

packetvideo . one step ahead of the stream wireless market
 go beyond the hype , howev , and it 's clear that packetvideo is make stride in deliv stream multimedia content to wireless devic . for one thing , it technolog , base on the industry-standard motion pictur expert group 4 ( mpeg-4 ) video encod / decod , actual work as promis . secondli , the compani ha forg a broad-bas band of allianc that not onli will eventu help it reach potenti custom down the road , but provid it financi support until the compani can ramp up sale . the list of packetvideo 's technolog partner who are also investors-and who have pump more than $ 121 million into the company-includ not just wireless devic manufactur , but content provid and semiconductor vendor , all of whom stand to benefit by increas sale of handheld wireless termin

PacketVideo
wireless devices
MPEG-4
wireless device manufacturers
content providers
semiconductor vendors
handheld wireless terminals
multimedia content streaming


Universal simulation of Hamiltonian dynamics for quantum systems with finite-dimensional state spaces

Abstract: What interactions are sufficient to simulate arbitrary quantum dynamics in a composite quantum system? Dodd et al. [Phys. Rev. A 65, 040301(R) (2002)] provided a partial solution to this problem in the form of an efficient algorithm to simulate any desired two-body Hamiltonian evolution using any fixed two-body entangling N-qubit Hamiltonian, and local unitaries. We extend this result to the case where the component systems are qudits, that is, have D dimensions. As a consequence we explain how universal quantum computation can be performed with any fixed two-body entangling N-qudit Hamiltonian, and local unitaries

univers simul of hamiltonian dynam for quantum system with finite-dimension state space
 what interact are suffici to simul arbitrari quantum dynam in a composit quantum system ? dodd et al . [ phi . rev. a 65 , 040301(r ) ( 2002 ) ] provid a partial solut to thi problem in the form of an effici algorithm to simul ani desir two-bodi hamiltonian evolut use ani fix two-bodi entangl n-qubit hamiltonian , and local unitari . we extend thi result to the case where the compon system are qudit , that is , have d dimens . as a consequ we explain how univers quantum comput can be perform with ani fix two-bodi entangl n-qudit hamiltonian , and local unitari


H/sub 2/ optimization of the three-element type dynamic vibration absorbers

Abstract: The dynamic vibration absorber (DVA) is a passive vibration control device which is attached to a vibrating body (called a primary system) subjected to exciting force or motion. In this paper, we will discuss an optimization problem of the three-element type DVA on the basis of the H/sub 2/ optimization criterion. The objective of the H/sub 2/ optimization is to reduce the total vibration energy of the system for overall frequencies; the total area under the power spectrum response curve is minimized in this criterion. If the system is subjected to random excitation instead of sinusoidal excitation, then the H/sub 2/ optimization is probably more desirable than the popular H/sub infinity / optimization. In the past decade there has been increasing interest in the three-element type DVA. However, most previous studies on this type of DVA were based on the H/sub infinity / optimization design, and no one has been able to find the algebraic solution as of yet. We found a closed-form exact solution for a special case where the primary system has no damping. Furthermore, the general case solution including the damped primary system is presented in the form of a numerical solution. The optimum parameters obtained here are compared to those of the conventional Voigt type DVA. They are also compared to other optimum parameters based on the H/sub infinity / criterion

h / sub 2/ optim of the three-el type dynam vibrat absorb
 the dynam vibrat absorb ( dva ) is a passiv vibrat control devic which is attach to a vibrat bodi ( call a primari system ) subject to excit forc or motion . in thi paper , we will discuss an optim problem of the three-el type dva on the basi of the h / sub 2/ optim criterion . the object of the h / sub 2/ optim is to reduc the total vibrat energi of the system for overal frequenc ; the total area under the power spectrum respons curv is minim in thi criterion . if the system is subject to random excit instead of sinusoid excit , then the h / sub 2/ optim is probabl more desir than the popular h / sub infin / optim . in the past decad there ha been increas interest in the three-el type dva . howev , most previou studi on thi type of dva were base on the h / sub infin / optim design , and no one ha been abl to find the algebra solut as of yet . we found a closed-form exact solut for a special case where the primari system ha no damp . furthermor , the gener case solut includ the damp primari system is present in the form of a numer solut . the optimum paramet obtain here are compar to those of the convent voigt type dva . they are also compar to other optimum paramet base on the h / sub infin / criterion


The semi-algebraic theory of stochastic games

Abstract: The asymptotic behavior of the min-max value of a finite-state zero-sum discounted stochastic game, as the discount rate approaches 0, has been studied in the past using the theory of real-closed fields. We use the theory of semi-algebraic sets and mappings to prove some asymptotic properties of the min-max value, which hold uniformly for all stochastic games in which the number of states and players' actions are predetermined to some fixed values. As a corollary, we prove a uniform polynomial convergence rate of the value of the N-stage game to the value of the nondiscount game, over a bounded set of payoffs

the semi-algebra theori of stochast game
 the asymptot behavior of the min-max valu of a finite-st zero-sum discount stochast game , as the discount rate approach 0 , ha been studi in the past use the theori of real-clos field . we use the theori of semi-algebra set and map to prove some asymptot properti of the min-max valu , which hold uniformli for all stochast game in which the number of state and player ' action are predetermin to some fix valu . as a corollari , we prove a uniform polynomi converg rate of the valu of the n-stage game to the valu of the nondiscount game , over a bound set of payoff

two-player zero-sum finite-state stochastic games


Polarization of the RF field in a human head at high field: a study with a quadrature surface coil at 7.0 T

Abstract: The RF field intensity distribution in the human brain becomes inhomogeneous due to wave behavior at high field. This is further complicated by the spatial distribution of RF field polarization that must be considered to predict image intensity distribution. An additional layer of complexity is involved when a quadrature coil is used for transmission and reception. To study such complicated RF field behavior, a computer modeling method was employed to investigate the RF field of a quadrature surface coil at 300 MHz. Theoretical and experimental results for a phantom and the human head at 7.0 T are presented. The results are theoretically important and practically useful for high-field quadrature coil design and application

polar of the rf field in a human head at high field : a studi with a quadratur surfac coil at 7.0 t
 the rf field intens distribut in the human brain becom inhomogen due to wave behavior at high field . thi is further complic by the spatial distribut of rf field polar that must be consid to predict imag intens distribut . an addit layer of complex is involv when a quadratur coil is use for transmiss and recept . to studi such complic rf field behavior , a comput model method wa employ to investig the rf field of a quadratur surfac coil at 300 mhz . theoret and experiment result for a phantom and the human head at 7.0 t are present . the result are theoret import and practic use for high-field quadratur coil design and applic

quadrature surface coil
7.0 T
RF field intensity distribution
human brain
spatial distribution
RF field polarization
image intensity distribution
computer modeling
300 MHz
high field MRI
high-field coil design
whole-body MRI
phantom samples
segmented images
3D multitissue head model
gradient echo images
finite difference time domain method
Maxwell wave equations
reception fields
transmission fields


Construction of information retrieval thesaurus for family planning terms using CDS/ISIS

Abstract: The thesaurus as a tool for information retrieval and as an alternative to the existing scheme of classifications in information retrieval is discussed. The paper considers the emergence of the information retrieval thesaurus and its definition. Family planning is a multidisciplinary subject covering socio economic, cultural, psychological and medical fields. This necessitated the construction of a thesaurus for the Family Planning discipline. The construction is based on UNISIST, ISO 2788 and BS 5723 guidelines by using CDS/ISIS software

construct of inform retriev thesauru for famili plan term use cd / isi
 the thesauru as a tool for inform retriev and as an altern to the exist scheme of classif in inform retriev is discuss . the paper consid the emerg of the inform retriev thesauru and it definit . famili plan is a multidisciplinari subject cover socio econom , cultur , psycholog and medic field . thi necessit the construct of a thesauru for the famili plan disciplin . the construct is base on unisist , iso 2788 and bs 5723 guidelin by use cd / isi softwar

information retrieval
thesaurus
family planning terms
Family Planning
classification
culture
psychology
UNISIST
ISO 2788
BS 5723
CDS/ISIS software
bibliographic databases
socio economic field
medicine


Taking back control [SCADA system]

Abstract: Most common way to implement a SCADA system is to go outside. However, in the author's opinion, to truly take control of a SCADA project, in-house personnel should handle as much of the job as possible. This includes design, equipment specification, installation, and programming. The more of these tasks one does in-house, the more control and ownership one has. To accomplish this, we first evaluated the existing SCADA system and investigated new technologies to establish a list of features the new system needed to incorporate

take back control [ scada system ]
 most common way to implement a scada system is to go outsid . howev , in the author 's opinion , to truli take control of a scada project , in-hous personnel should handl as much of the job as possibl . thi includ design , equip specif , instal , and program . the more of these task one doe in-hous , the more control and ownership one ha . to accomplish thi , we first evalu the exist scada system and investig new technolog to establish a list of featur the new system need to incorpor

SCADA
supervisory control
data acquisition
in-house integration
compatibility
programmable logic controllers


Dot-Net makes slow progress

Abstract: Microsoft's Windows .Net Enterprise Server Release Candidate I, which was released at the end of last month, provides an early glimpse of the system that will eventually replace Windows 200 Advanced Server. The software has been improved so that Active Directory is more flexible and easier to deploy; and security, scalability and management have also been enhanced

dot-net make slow progress
 microsoft 's window .net enterpris server releas candid i , which wa releas at the end of last month , provid an earli glimps of the system that will eventu replac window 200 advanc server . the softwar ha been improv so that activ directori is more flexibl and easier to deploy ; and secur , scalabl and manag have also been enhanc

Windows .Net Enterprise Server
Active Directory
security
scalability


Distributed servers approach for large-scale secure multicast

Abstract: In order to offer backward and forward secrecy for multicast applications (i.e., a new member cannot decrypt the multicast data sent before its joining and a former member cannot decrypt the data sent after its leaving), the data encryption key has to be changed whenever a user joins or leaves the system. Such a change has to be made known to all the current users. The bandwidth used for such re-key messaging can be high when the user pool is large. We propose a distributed servers approach to minimize the overall system bandwidth (and complexity) by splitting the user pool into multiple groups each served by a (logical) server. After presenting an analytic model for the system based on a hierarchical key tree, we show that there is an optimal number of servers to achieve minimum system bandwidth. As the underlying user traffic fluctuates, we propose a simple dynamic scheme with low overhead where a physical server adaptively splits and merges its traffic into multiple groups each served by a logical server so as to minimize its total bandwidth. Our results show that a distributed servers approach is able to substantially reduce the total bandwidth required as compared with the traditional single-server approach, especially for those applications with a large user pool, short holding time, and relatively low bandwidth of a data stream, as in the Internet stock quote applications

distribut server approach for large-scal secur multicast
 in order to offer backward and forward secreci for multicast applic ( i.e. , a new member can not decrypt the multicast data sent befor it join and a former member can not decrypt the data sent after it leav ) , the data encrypt key ha to be chang whenev a user join or leav the system . such a chang ha to be made known to all the current user . the bandwidth use for such re-key messag can be high when the user pool is larg . we propos a distribut server approach to minim the overal system bandwidth ( and complex ) by split the user pool into multipl group each serv by a ( logic ) server . after present an analyt model for the system base on a hierarch key tree , we show that there is an optim number of server to achiev minimum system bandwidth . as the underli user traffic fluctuat , we propos a simpl dynam scheme with low overhead where a physic server adapt split and merg it traffic into multipl group each serv by a logic server so as to minim it total bandwidth . our result show that a distribut server approach is abl to substanti reduc the total bandwidth requir as compar with the tradit single-serv approach , especi for those applic with a larg user pool , short hold time , and rel low bandwidth of a data stream , as in the internet stock quot applic

distributed servers
large-scale secure multicast
forward secrecy
multicast applications
data encryption key
re-key messaging
system bandwidth
hierarchical key tree
user traffic
short holding time
Internet stock quote applications
backward secrecy
system complexity
traffic merging
dynamic split-and-merge scheme
key management


Cooperative three- and four-player quantum games

Abstract: A cooperative multi-player quantum game played by 3 and 4 players has been studied. A quantum superposed operator is introduced in this work which solves the non-zero sum difficulty in previous treatments. The role of quantum entanglement of the initial state is discussed in detail

cooper three- and four-play quantum game
 a cooper multi-play quantum game play by 3 and 4 player ha been studi . a quantum superpos oper is introduc in thi work which solv the non-zero sum difficulti in previou treatment . the role of quantum entangl of the initi state is discuss in detail

quantum superposed operator
quantum entanglement
initial state
cooperative three-player quantum games
cooperative four-player quantum games
nonzero sum difficulty


A Blog in every law firm?

Abstract: You don't know today what you'll want to know next year. Rather than trying to solve that problem, focus on providing simple tools to users that create valuable content across the firm. Individual contributions will be more visible, and you will have a searchable archive of your institutional memory and a simplified process for ensuring everyone is up to speed. Whether you embrace weblogs for their individual or institutional benefits, one thing is certain: They will become powerful tools for those who seek ways to more efficiently and intelligently manage information

a blog in everi law firm ?
 you do n't know today what you 'll want to know next year . rather than tri to solv that problem , focu on provid simpl tool to user that creat valuabl content across the firm . individu contribut will be more visibl , and you will have a searchabl archiv of your institut memori and a simplifi process for ensur everyon is up to speed . whether you embrac weblog for their individu or institut benefit , one thing is certain : they will becom power tool for those who seek way to more effici and intellig manag inform

law firm
institutional memory
weblogs
Web site


Grey-box model identification via evolutionary computing

Abstract: This paper presents an evolutionary grey-box model identification methodology that makes the best use of a priori knowledge on a clear-box model with a global structural representation of the physical system under study, whilst incorporating accurate blackbox models for immeasurable and local nonlinearities of a practical system. The evolutionary technique is applied to building dominant structural identification with local parametric tuning without the need of a differentiable performance index in the presence of noisy data. It is shown that the evolutionary technique provides an excellent fitting performance and is capable of accommodating multiple objectives such as to examine the relationships between model complexity and fitting accuracy during the model building process. Validation results show that the proposed method offers robust, uncluttered and accurate models for two practical systems. It is expected that this type of grey-box models will accommodate many practical engineering systems for a better modelling accuracy

grey-box model identif via evolutionari comput
 thi paper present an evolutionari grey-box model identif methodolog that make the best use of a priori knowledg on a clear-box model with a global structur represent of the physic system under studi , whilst incorpor accur blackbox model for immeasur and local nonlinear of a practic system . the evolutionari techniqu is appli to build domin structur identif with local parametr tune without the need of a differenti perform index in the presenc of noisi data . it is shown that the evolutionari techniqu provid an excel fit perform and is capabl of accommod multipl object such as to examin the relationship between model complex and fit accuraci dure the model build process . valid result show that the propos method offer robust , unclutt and accur model for two practic system . it is expect that thi type of grey-box model will accommod mani practic engin system for a better model accuraci

grey-box models
system identification
evolutionary algorithms
genetic evolution
multiobjective optimisation
hydraulic system
nonlinear system


A genetic approach to the optimization of automatic generation control parameters for power systems

Abstract: This paper presents a method based on genetic algorithm for the automatic generation control of power systems. The technique is applied to control a system, which includes two areas tied together through a power line. As a consequence of continuous load variation, the frequency of the power system changes with time. In conventional studies, frequency transients are minimized by using integral controllers and thus zero steady-state error is obtained. In this paper, integral controller gains and frequency bias factors are determined by using the genetic algorithm. The results of simulation reveal the application of the genetic algorithm having easy implementation to find the global optimum values of the control parameters

a genet approach to the optim of automat gener control paramet for power system
 thi paper present a method base on genet algorithm for the automat gener control of power system . the techniqu is appli to control a system , which includ two area tie togeth through a power line . as a consequ of continu load variat , the frequenc of the power system chang with time . in convent studi , frequenc transient are minim by use integr control and thu zero steady-st error is obtain . in thi paper , integr control gain and frequenc bia factor are determin by use the genet algorithm . the result of simul reveal the applic of the genet algorithm have easi implement to find the global optimum valu of the control paramet

power systems automatic generation control parameters optimization


Buying into the relationship [business software]

Abstract: Choosing the right software to improve business processes can have a huge impact on a company's efficiency and profitability. While it is sometimes hard to get beyond vendor hype about software features and functionality and know what to realistically expect, it is even more difficult to determine if the vendor is the right vendor to partner with. Thus picking the right software is important, but companies have to realize that what they are really buying into is a relationship with the vendor

buy into the relationship [ busi softwar ]
 choos the right softwar to improv busi process can have a huge impact on a compani 's effici and profit . while it is sometim hard to get beyond vendor hype about softwar featur and function and know what to realist expect , it is even more difficult to determin if the vendor is the right vendor to partner with . thu pick the right softwar is import , but compani have to realiz that what they are realli buy into is a relationship with the vendor

business software
functionality
vendor relationship
management
software evaluation


Multi-agent collaboration for B2B workflow monitoring

Abstract: Business-to-business (B2B) application environments are exceedingly dynamic and competitive. This dynamism is manifested in the form of changing process requirements and time constraints. However, current workflow management technologies have difficulties trying to solve problems, such as: how to deal with the dynamic nature of B2B commerce processes, how to manage the distributed knowledge and recourses, and how to reduce the transaction risk. In this paper, a collaborative multi-agent system is proposed. Multiple intelligent agents in our system can work together not only to identify the workflow problems, but also to solve such problems, by applying business rules, such as re-organizing the procurement and the transaction processes, and making necessary workflow process changes

multi-ag collabor for b2b workflow monitor
 business-to-busi ( b2b ) applic environ are exceedingli dynam and competit . thi dynam is manifest in the form of chang process requir and time constraint . howev , current workflow manag technolog have difficulti tri to solv problem , such as : how to deal with the dynam natur of b2b commerc process , how to manag the distribut knowledg and recours , and how to reduc the transact risk . in thi paper , a collabor multi-ag system is propos . multipl intellig agent in our system can work togeth not onli to identifi the workflow problem , but also to solv such problem , by appli busi rule , such as re-organ the procur and the transact process , and make necessari workflow process chang

multi-agent collaboration
B2B workflow monitoring
changing process requirements
time constraints
workflow management
transaction risk
business rules
Internet
business-to-business applications
electronic commerce


A synergic analysis for Web-based enterprise resources planning systems

Abstract: As the central nervous system for managing an organization's mission and critical business data, Enterprise Resource Planning (ERP) system has evolved to become the backbone of e-business implementation. Since an ERP system is multimodule application software that helps a company manage its important business functions, it should be versatile enough to automate every aspect of business processes, including e-business

a synerg analysi for web-bas enterpris resourc plan system
 as the central nervou system for manag an organ 's mission and critic busi data , enterpris resourc plan ( erp ) system ha evolv to becom the backbon of e-busi implement . sinc an erp system is multimodul applic softwar that help a compani manag it import busi function , it should be versatil enough to autom everi aspect of busi process , includ e-busi

synergic analysis
Web-based enterprise resources planning
Enterprise Resource Planning
ERP
e-business
customer relationship management


SRP rolls out reliability and asset management initiative

Abstract: Reliability planning analysis at the Salt River Project (SRP, Tempe, Arizona, US) prioritizes geographic areas for preventive inspections based on a cost benefit model. However, SRP wanted a new application system to prioritize inspections and to predict when direct buried cable would fail using the same cost benefit model. In the business cases, the represented type of kilowatt load-residential, commercial or critical circuit-determines the cost benefit per circuit. The preferred solution was to develop a geographical information system (GIS) application allowing for a circuit query for the specific geographic areas it crosses and the density of load points of a given type within those areas. The query returns results based on the type of equipment analysis execution: wood pole, preventive maintenance for a line or cable replacement. This differentiation insures that all the facilities relevant to a specific analysis type influence prioritization of the geographic areas

srp roll out reliabl and asset manag initi
 reliabl plan analysi at the salt river project ( srp , temp , arizona , us ) priorit geograph area for prevent inspect base on a cost benefit model . howev , srp want a new applic system to priorit inspect and to predict when direct buri cabl would fail use the same cost benefit model . in the busi case , the repres type of kilowatt load-residenti , commerci or critic circuit-determin the cost benefit per circuit . the prefer solut wa to develop a geograph inform system ( gi ) applic allow for a circuit queri for the specif geograph area it cross and the densiti of load point of a given type within those area . the queri return result base on the type of equip analysi execut : wood pole , prevent mainten for a line or cabl replac . thi differenti insur that all the facil relev to a specif analysi type influenc priorit of the geograph area

reliability planning analysis
Salt River Project
Tempe
Arizona
geographic areas
preventive inspections
cost benefit model
direct buried cable
geographical information system
GIS
equipment analysis execution
wood pole
cable replacement
USA
condition monitoring


Multiecho segmented EPI with z-shimmed background gradient compensation (MESBAC) pulse sequence for fMRI

Abstract: A MultiEcho Segmented EPI with z-shimmed BAckground gradient Compensation (MESBAC) pulse sequence is proposed and validated for functional MRI (fMRI) study in regions suffering from severe susceptibility artifacts. This sequence provides an effective tradeoff between spatial and temporal resolution and reduces image distortion and signal dropout. The blood oxygenation level-dependent (BOLD)-weighted fMRI signal can be reliably obtained in the region of the orbitofrontal cortex (OFC). To overcome physiological motion artifacts during prolonged multisegment EPI acquisition, two sets of navigator echoes were acquired in both the readout and phase-encoding directions. Ghost artifacts generally produced by single-shot EPI acquisition were eliminated by separately placing the even and odd echoes in different k-space trajectories. Unlike most z-shim methods that focus on increasing temporal resolution for event-related functional brain mapping, the MESBAC sequence simultaneously addresses problems of image distortion and signal dropout while maintaining sufficient temporal resolution. The MESBAC sequence will be particularly useful for pharmacological and affective fMRI studies in brain regions such as the OFC, nucleus accumbens, amygdala, para-hippocampus, etc

multiecho segment epi with z-shim background gradient compens ( mesbac ) puls sequenc for fmri
 a multiecho segment epi with z-shim background gradient compens ( mesbac ) puls sequenc is propos and valid for function mri ( fmri ) studi in region suffer from sever suscept artifact . thi sequenc provid an effect tradeoff between spatial and tempor resolut and reduc imag distort and signal dropout . the blood oxygen level-depend ( bold)-weight fmri signal can be reliabl obtain in the region of the orbitofront cortex ( ofc ) . to overcom physiolog motion artifact dure prolong multiseg epi acquisit , two set of navig echo were acquir in both the readout and phase-encod direct . ghost artifact gener produc by single-shot epi acquisit were elimin by separ place the even and odd echo in differ k-space trajectori . unlik most z-shim method that focu on increas tempor resolut for event-rel function brain map , the mesbac sequenc simultan address problem of imag distort and signal dropout while maintain suffici tempor resolut . the mesbac sequenc will be particularli use for pharmacolog and affect fmri studi in brain region such as the ofc , nucleu accumben , amygdala , para-hippocampu , etc


Phase conditions for Schur polynomials

Abstract: The rate of change of phase of a real or complex Schur polynomial, evaluated along the unit circle traversed counterclockwise, is strictly positive. For polynomials with real coefficients, this bound can be tightened. These and some other fundamental bounds on the rate of change of phase are derived here, using the Tchebyshev representation of the image of a real polynomial evaluated on the unit circle

phase condit for schur polynomi
 the rate of chang of phase of a real or complex schur polynomi , evalu along the unit circl travers counterclockwis , is strictli posit . for polynomi with real coeffici , thi bound can be tighten . these and some other fundament bound on the rate of chang of phase are deriv here , use the tchebyshev represent of the imag of a real polynomi evalu on the unit circl

phase conditions
Schur polynomial
rate of change of phase
real coefficients
Tchebyshev representation
phase monotonicity
robust stability
discrete-time control systems
stabilization


Four-point wavelets and their applications

Abstract: Multiresolution analysis (MRA) and wavelets provide useful and efficient tools for representing functions at multiple levels of details. Wavelet representations have been used in a broad range of applications, including image compression, physical simulation and numerical analysis. In this paper, the authors construct a new class of wavelets, called four-point wavelets, based on an interpolatory four-point subdivision scheme. They are of local support, symmetric and stable. The analysis and synthesis algorithms have linear time complexity. Depending on different weight parameters w, the scaling functions and wavelets generated by the four-point subdivision scheme are of different degrees of smoothness. Therefore the user can select better wavelets relevant to the practice among the classes of wavelets. The authors apply the four-point wavelets in signal compression. The results show that the four-point wavelets behave much better than B-spline wavelets in many situations

four-point wavelet and their applic
 multiresolut analysi ( mra ) and wavelet provid use and effici tool for repres function at multipl level of detail . wavelet represent have been use in a broad rang of applic , includ imag compress , physic simul and numer analysi . in thi paper , the author construct a new class of wavelet , call four-point wavelet , base on an interpolatori four-point subdivis scheme . they are of local support , symmetr and stabl . the analysi and synthesi algorithm have linear time complex . depend on differ weight paramet w , the scale function and wavelet gener by the four-point subdivis scheme are of differ degre of smooth . therefor the user can select better wavelet relev to the practic among the class of wavelet . the author appli the four-point wavelet in signal compress . the result show that the four-point wavelet behav much better than b-spline wavelet in mani situat


Effect of multileaf collimator leaf width on physical dose distributions in the treatment of CNS and head and neck neoplasms with intensity modulated radiation therapy

Abstract: The purpose of this work is to examine physical radiation dose differences between two multileaf collimator (MLC) leaf widths (5 and 10 mm) in the treatment of CNS and head and neck neoplasms with intensity modulated radiation therapy (IMRT). Three clinical patients with CNS tumors were planned with two different MLC leaf sizes, 5 and 10 mm, representing Varian-120 and Varian-80 Millennium multileaf collimators, respectively. Two sets of IMRT treatment plans were developed. The goal of the first set was radiation dose conformality in three dimensions. The goal for the second set was organ avoidance of a nearby critical structure while maintaining adequate coverage of the target volume. Treatment planning utilized the CadPlan/Helios system (Varian Medical Systems, Milpitas CA) for dynamic MLC treatment delivery. All beam parameters and optimization (cost function) parameters were identical for the 5 and 10 mm plans. For all cases the number of beams, gantry positions, and table positions were taken from clinically treated three-dimensional conformal radiotherapy plans. Conformality was measured by the ratio of the planning isodose volume to the target volume. Organ avoidance was measured by the volume of the critical structure receiving greater than 90% of the prescription dose (V/sub 90/). For three patients with squamous cell carcinoma of the head and neck (T2-T4 N0-N2c M0) 5 and 10 mm leaf widths were compared for parotid preservation utilizing nine coplanar equally spaced beams delivering a simultaneous integrated boost. Because modest differences in physical dose to the parotid were detected, a NTCP model based upon the clinical parameters of Eisbruch et al. was then used for comparisons. The conformality improved in all three CNS cases for the 5 mm plans compared to the 10 mm plans. For the organ avoidance plans, V/sub 90/ also improved in two of the three cases when the 5 mm leaf width was utilized for IMRT treatment delivery. In the third case, both the 5 and 10 mm plans were able to spare the critical structure with none of the structure receiving more than 90% of the prescription dose, but in the moderate dose range, less dose was delivered to the critical structure with the 5 mm plan. For the head and neck cases both the 5 and 10*2.5 mm beamlets dMLC sliding window techniques spared the contralateral parotid gland while maintaining target volume coverage. The mean parotid dose was modestly lower with the smaller beamlet size (21.04 Gy vs 22.36 Gy). The resulting average NTCP values were 13.72% for 10 mm dMLC and 8.24% for 5 mm dMLC. In conclusion, five mm leaf width results in an improvement in physical dose distribution over 10 mm leaf width that may be clinically relevant in some cases. These differences may be most pronounced for single fraction radiosurgery or in cases where the tolerance of the sensitive organ is less than or close to the target volume prescription

effect of multileaf collim leaf width on physic dose distribut in the treatment of cn and head and neck neoplasm with intens modul radiat therapi
 the purpos of thi work is to examin physic radiat dose differ between two multileaf collim ( mlc ) leaf width ( 5 and 10 mm ) in the treatment of cn and head and neck neoplasm with intens modul radiat therapi ( imrt ) . three clinic patient with cn tumor were plan with two differ mlc leaf size , 5 and 10 mm , repres varian-120 and varian-80 millennium multileaf collim , respect . two set of imrt treatment plan were develop . the goal of the first set wa radiat dose conform in three dimens . the goal for the second set wa organ avoid of a nearbi critic structur while maintain adequ coverag of the target volum . treatment plan util the cadplan / helio system ( varian medic system , milpita ca ) for dynam mlc treatment deliveri . all beam paramet and optim ( cost function ) paramet were ident for the 5 and 10 mm plan . for all case the number of beam , gantri posit , and tabl posit were taken from clinic treat three-dimension conform radiotherapi plan . conform wa measur by the ratio of the plan isodos volum to the target volum . organ avoid wa measur by the volum of the critic structur receiv greater than 90 % of the prescript dose ( v / sub 90/ ) . for three patient with squamou cell carcinoma of the head and neck ( t2-t4 n0-n2c m0 ) 5 and 10 mm leaf width were compar for parotid preserv util nine coplanar equal space beam deliv a simultan integr boost . becaus modest differ in physic dose to the parotid were detect , a ntcp model base upon the clinic paramet of eisbruch et al . wa then use for comparison . the conform improv in all three cn case for the 5 mm plan compar to the 10 mm plan . for the organ avoid plan , v / sub 90/ also improv in two of the three case when the 5 mm leaf width wa util for imrt treatment deliveri . in the third case , both the 5 and 10 mm plan were abl to spare the critic structur with none of the structur receiv more than 90 % of the prescript dose , but in the moder dose rang , less dose wa deliv to the critic structur with the 5 mm plan . for the head and neck case both the 5 and 10 * 2.5 mm beamlet dmlc slide window techniqu spare the contralater parotid gland while maintain target volum coverag . the mean parotid dose wa modestli lower with the smaller beamlet size ( 21.04 gy vs 22.36 gy ) . the result averag ntcp valu were 13.72 % for 10 mm dmlc and 8.24 % for 5 mm dmlc . in conclus , five mm leaf width result in an improv in physic dose distribut over 10 mm leaf width that may be clinic relev in some case . these differ may be most pronounc for singl fraction radiosurgeri or in case where the toler of the sensit organ is less than or close to the target volum prescript

multileaf collimator leaf width
physical dose distributions
head and neck neoplasms
intensity modulated radiation therapy
10 mm
CNS tumors
treatment planning
conformal radiotherapy
parotid preservation
5 mm
beamlet size
21.04 Gy
22.36 Gy
single fraction radiosurgery
CNS neoplasms
optimization parameters
acceptable tumor coverage
minimal toxicity
collimator rotation


Production capacity of flexible manufacturing systems with fixed production ratios

Abstract: Determining the production capacity of flexible manufacturing systems is a very important issue in the design of such systems. We propose an approach for determining the production capacity (i.e. the maximum production rate) of a flexible manufacturing system with several part types, dedicated pallets, and fixed production ratios among the different part types. We show that the problem reduces to the determination of a single parameter for which we propose an iterative procedure. Simulation or approximate analytical techniques can be used as the building block performance evaluation technique in the iterative procedure

product capac of flexibl manufactur system with fix product ratio
 determin the product capac of flexibl manufactur system is a veri import issu in the design of such system . we propos an approach for determin the product capac ( i.e. the maximum product rate ) of a flexibl manufactur system with sever part type , dedic pallet , and fix product ratio among the differ part type . we show that the problem reduc to the determin of a singl paramet for which we propos an iter procedur . simul or approxim analyt techniqu can be use as the build block perform evalu techniqu in the iter procedur


Ventilation-perfusion ratio of signal intensity in human lung using oxygen-enhanced and arterial spin labeling techniques

Abstract: This study investigates the distribution of ventilation-perfusion (V/Q) signal intensity (SI) ratios using oxygen-enhanced and arterial spin labeling (ASL) techniques in the lungs of 10 healthy volunteers. Ventilation and perfusion images were simultaneously acquired using the flow-sensitive alternating inversion recovery (FAIR) method as volunteers alternately inhaled room air and 100% oxygen. Images of the T/sub 1/ distribution were calculated for five volunteers for both selective (T/sub 1f/) and nonselective (T/sub 1/) inversion. The average T/sub 1/ was 1360 ms+or-116 ms, and the average T/sub 1f/ was 1012 ms+or-112 ms, yielding a difference that is statistically significant (P<0.002). Excluding large pulmonary vessels, the average V/Q SI ratios were 0.355+or-0.073 for the left lung and 0.371+or-0.093 for the right lung, which are in agreement with the theoretical V/Q SI ratio. Plots of the WO SI ratio are similar to the logarithmic normal distribution obtained by multiple inert gas elimination techniques, with a range of ratios matching ventilation and perfusion. This MRI V/Q technique is completely noninvasive and does not involve ionized radiation. A limitation of this method is the nonsimultaneous acquisition of perfusion and ventilation data, with oxygen administered only for the ventilation data

ventilation-perfus ratio of signal intens in human lung use oxygen-enhanc and arteri spin label techniqu
 thi studi investig the distribut of ventilation-perfus ( v / q ) signal intens ( si ) ratio use oxygen-enhanc and arteri spin label ( asl ) techniqu in the lung of 10 healthi volunt . ventil and perfus imag were simultan acquir use the flow-sensit altern invers recoveri ( fair ) method as volunt altern inhal room air and 100 % oxygen . imag of the t / sub 1/ distribut were calcul for five volunt for both select ( t / sub 1f/ ) and nonselect ( t / sub 1/ ) invers . the averag t / sub 1/ wa 1360 ms+or-116 ms , and the averag t / sub 1f/ wa 1012 ms+or-112 ms , yield a differ that is statist signific ( p<0.002 ) . exclud larg pulmonari vessel , the averag v / q si ratio were 0.355+or-0.073 for the left lung and 0.371+or-0.093 for the right lung , which are in agreement with the theoret v / q si ratio . plot of the wo si ratio are similar to the logarithm normal distribut obtain by multipl inert ga elimin techniqu , with a rang of ratio match ventil and perfus . thi mri v / q techniqu is complet noninvas and doe not involv ioniz radiat . a limit of thi method is the nonsimultan acquisit of perfus and ventil data , with oxygen administ onli for the ventil data


Laser-based internal profile measurement system

Abstract: An automatic laser-based system to measure the internal profiles of various structures has been developed. The system uses a point laser source through a rotating optical device fixed on to a laser measurement meter. A notebook computer with custom software is used to control the laser meter and rotating device to estimate the scanned profile shape and to determine the resulting cross-section area. The information provided by this system is essential to construction industry, including window and door builders; the glass, panel, board, and floor tile manufacturers; carpet venders; and building contractors for cost estimation and production control. As a result, the lead time for delivering the customized windowpanes, woodwork, floor tiles, and ceilings can be reduced. Applications of this system for measuring the shapes of window frames and floor plans are described and demonstrated. The measurement accuracy is evaluated and analyzed. Results have indicated that the measurement accuracy can be achieved within 4% of the measurement distance, for typical window designs and floor patterns required by major window manufacturers. Recommendations to improve the system are also included

laser-bas intern profil measur system
 an automat laser-bas system to measur the intern profil of variou structur ha been develop . the system use a point laser sourc through a rotat optic devic fix on to a laser measur meter . a notebook comput with custom softwar is use to control the laser meter and rotat devic to estim the scan profil shape and to determin the result cross-sect area . the inform provid by thi system is essenti to construct industri , includ window and door builder ; the glass , panel , board , and floor tile manufactur ; carpet vender ; and build contractor for cost estim and product control . as a result , the lead time for deliv the custom windowpan , woodwork , floor tile , and ceil can be reduc . applic of thi system for measur the shape of window frame and floor plan are describ and demonstr . the measur accuraci is evalu and analyz . result have indic that the measur accuraci can be achiev within 4 % of the measur distanc , for typic window design and floor pattern requir by major window manufactur . recommend to improv the system are also includ

laser-based internal profile measurement system


Quadratic programming algorithms for large-scale model predictive control

Abstract: Quadratic programming (QP) methods are an important element in the application of model predictive control (MPC). As larger and more challenging MPC applications are considered, more attention needs to be focused on the construction and tailoring of efficient QP algorithms. In this study, we tailor and apply a new QP method, called QPSchur, to large MPC applications, such as cross directional control problems in paper machines. Written in C++, QPSchur is an object oriented implementation of a novel dual space, Schur complement algorithm. We compare this approach to three widely applied QP algorithms and show that QPSchur is significantly more efficient (up to two orders of magnitude) than the other algorithms. In addition, detailed simulations are considered that demonstrate the importance of the flexible, object oriented construction of QPSchur, along with additional features for constraint handling, warm starts and partial solution

quadrat program algorithm for large-scal model predict control
 quadrat program ( qp ) method are an import element in the applic of model predict control ( mpc ) . as larger and more challeng mpc applic are consid , more attent need to be focus on the construct and tailor of effici qp algorithm . in thi studi , we tailor and appli a new qp method , call qpschur , to larg mpc applic , such as cross direct control problem in paper machin . written in c++ , qpschur is an object orient implement of a novel dual space , schur complement algorithm . we compar thi approach to three wide appli qp algorithm and show that qpschur is significantli more effici ( up to two order of magnitud ) than the other algorithm . in addit , detail simul are consid that demonstr the import of the flexibl , object orient construct of qpschur , along with addit featur for constraint handl , warm start and partial solut

quadratic programming algorithms
large-scale model predictive control
QPSchur
cross directional control problems
paper machines
object oriented implementation
simulations
constraint handling
warm starts
partial solution
dual space Schur complement algorithm
flexible object oriented construction


War games: The truth [network security]

Abstract: With al Qaeda on the tip of tongues around the world, find out how terror groups could target your network. What are the dangers and how do you fight them?

war game : the truth [ network secur ]
 with al qaeda on the tip of tongu around the world , find out how terror group could target your network . what are the danger and how do you fight them ?

networks
security
malicious attacks
employees


Transcripts: bane or boon? [law reporting]

Abstract: Because judge-made law, by its very nature, is less immediately accessible than the law of codified, statutory systems, it calls for an efficient system of law reporting. Of necessity, any such system will be selective, the majority of decisions going unreported. Considerable power thereby comes to repose in the hands of the law reporters. The author shares his invaluable perception and extensive research on the difficulties which arise from the excess of access to judgments

transcript : bane or boon ? [ law report ]
 becaus judge-mad law , by it veri natur , is less immedi access than the law of codifi , statutori system , it call for an effici system of law report . of necess , ani such system will be select , the major of decis go unreport . consider power therebi come to repos in the hand of the law report . the author share hi invalu percept and extens research on the difficulti which aris from the excess of access to judgment

transcripts
law reporting
judge-made law
judgments


FinancialContent. Credibility is king

Abstract: If you went to a site named Financialcontent.com, you'd probably expect to find, well, financial content. Maybe stock prices or company earnings or market charts or economic statistics or corporate news reports. Well, you'd be partially correct. Financialcontent.com does deal in financial information, but its main objective is not to distribute its financial content to individual investors, but to distribute it through other Web sites. In other words, FinancialContent is a wholesaler, not a retailer. As an aggregator, FinancialContent provides partner sites with financial information that is tailored to that individual Web site

financialcont . credibl is king
 if you went to a site name financialcontent.com , you 'd probabl expect to find , well , financi content . mayb stock price or compani earn or market chart or econom statist or corpor news report . well , you 'd be partial correct . financialcontent.com doe deal in financi inform , but it main object is not to distribut it financi content to individu investor , but to distribut it through other web site . in other word , financialcont is a wholesal , not a retail . as an aggreg , financialcont provid partner site with financi inform that is tailor to that individu web site

Financialcontent.com
financial information
Web sites
aggregator
partner sites


Senate to Powell: regulate more [FCC]

Abstract: FCC Chairman Michael Powell pitched a six-step market-based recovery plan to the Senate last week, but two members of the Commerce Committee told him telecom's revival requires more reliance on regulation

senat to powel : regul more [ fcc ]
 fcc chairman michael powel pitch a six-step market-bas recoveri plan to the senat last week , but two member of the commerc committe told him telecom 's reviv requir more relianc on regul

FCC
recovery plan
US Senate Commerce Committee
telecom industry


What do you say? Open letters to women considering a computer science major

Abstract: In the last decade we have both monitored with great interest the ratio of female to male computer science majors at our respective institutions. With each entering class, we think: "Surely, now is the time when the numbers will become more balanced." Logic tells us that this must eventually happen, because the opportunities in computing are simply too attractive for an entire segment of our population to routinely pass up. But each year we are again disappointed in the number of women students, as they continue to be woefully under-represented among computer science majors. So, what do you say to a young woman who is considering a college choice and a choice of major in order to make computer science a more attractive option? We have organized some thoughts on that subject into open letters

what do you say ? open letter to women consid a comput scienc major
 in the last decad we have both monitor with great interest the ratio of femal to male comput scienc major at our respect institut . with each enter class , we think : " sure , now is the time when the number will becom more balanc . " logic tell us that thi must eventu happen , becaus the opportun in comput are simpli too attract for an entir segment of our popul to routin pass up . but each year we are again disappoint in the number of women student , as they continu to be woefulli under-repres among comput scienc major . so , what do you say to a young woman who is consid a colleg choic and a choic of major in order to make comput scienc a more attract option ? we have organ some thought on that subject into open letter

women
computer science majors
female
male
computer science education
gender issues


Robust stability analysis for current-programmed regulators

Abstract: Uncertainty models for the three basic switch-mode converters: buck, boost, and buck-boost are given in this paper. The resulting models are represented by linear fractional transformations with structured dynamic uncertainties. Uncertainties are assumed for the load resistance R=R/sub O/(1+ delta /sub R/), inductance L=L/sub O/(1+ delta /sub L/), and capacitance C=C/sub O/(1+ delta /sub C/). The interest in these models is clearly motivated by the need to have models for switch-mode DC-DC converters that are compatible with robust control analysis, which require a model structure consisting of a nominal model and a norm-bounded modeling uncertainty. Therefore, robust stability analysis can be realized using standard mu -tools. At the end of the paper, an illustrative example is given which shows the simplicity of the procedure

robust stabil analysi for current-program regul
 uncertainti model for the three basic switch-mod convert : buck , boost , and buck-boost are given in thi paper . the result model are repres by linear fraction transform with structur dynam uncertainti . uncertainti are assum for the load resist r = r / sub o/(1 + delta /sub r/ ) , induct l = l / sub o/(1 + delta /sub l/ ) , and capacit c = c / sub o/(1 + delta /sub c/ ) . the interest in these model is clearli motiv by the need to have model for switch-mod dc-dc convert that are compat with robust control analysi , which requir a model structur consist of a nomin model and a norm-bound model uncertainti . therefor , robust stabil analysi can be realiz use standard mu -tool . at the end of the paper , an illustr exampl is given which show the simplic of the procedur

robust stability analysis
current-programmed regulators
uncertainty models
linear fractional transformations
structured dynamic uncertainties
load resistance
inductance
capacitance
switch-mode DC-DC converters
control analysis
nominal model
norm-bounded modeling uncertainty
buck converters
boost converters
buck-boost converters


A modal logic for indiscernibility and complementarity in information systems

Abstract: In this paper, we study indiscernibility relations and complementarity relations in information systems, The first-order characterization of indiscernibility and complementarity is obtained through a duality result between information systems and certain structures of relational type characterized by first-order conditions. The modal analysis of indiscernibility and complementarity is performed through a modal logic which modalities correspond to indiscernibility relations and complementarity relations in information systems

a modal logic for indiscern and complementar in inform system
 in thi paper , we studi indiscern relat and complementar relat in inform system , the first-ord character of indiscern and complementar is obtain through a dualiti result between inform system and certain structur of relat type character by first-ord condit . the modal analysi of indiscern and complementar is perform through a modal logic which modal correspond to indiscern relat and complementar relat in inform system

modal logic
indiscernibility
complementarity
information systems
first-order characterization
duality result
relational type
first-order conditions


A min-max theorem on feedback vertex sets

Abstract: We establish a necessary and sufficient condition for the linear system {x : Hx >or= e, x >or= 0} associated with a bipartite tournament to be totally dual integral, where H is the cycle-vertex incidence matrix and e is the all-one vector. The consequence is a min-max relation on packing and covering cycles, together with strongly polynomial time algorithms for the feedback vertex set problem and the cycle packing problem on the corresponding bipartite tournaments. In addition, we show that the feedback vertex set problem on general bipartite tournaments is NP-complete and approximable within 3.5 based on the min-max theorem

a min-max theorem on feedback vertex set
 we establish a necessari and suffici condit for the linear system { x : hx > or= e , x > or= 0 } associ with a bipartit tournament to be total dual integr , where h is the cycle-vertex incid matrix and e is the all-on vector . the consequ is a min-max relat on pack and cover cycl , togeth with strongli polynomi time algorithm for the feedback vertex set problem and the cycl pack problem on the correspond bipartit tournament . in addit , we show that the feedback vertex set problem on gener bipartit tournament is np-complet and approxim within 3.5 base on the min-max theorem

min-max theorem
feedback vertex sets
linear system
bipartite tournament
cycle-vertex incidence matrix
all-one vector
covering cycles
strongly polynomial time algorithms
feedback vertex set problem
cycle packing problem
necessary sufficient condition
totally dual integral system
NP-complete problem
graphs
combinatorial optimization problems
linear programming duality theory


Optimization of cutting conditions for single pass turning operations using a deterministic approach

Abstract: An optimization analysis, strategy and CAM software for the selection of economic cutting conditions in single pass turning operations are presented using a deterministic approach. The optimization is based on criteria typified by the maximum production rate and includes a host of practical constraints. It is shown that the deterministic optimization approach involving mathematical analyses of constrained economic trends and graphical representation on the feed-speed domain provides a clearly defined strategy that not only provides a unique global optimum solution, but also the software that is suitable for on-line CAM applications. A numerical study has verified the developed optimization strategies and software and has shown the economic benefits of using optimization

optim of cut condit for singl pass turn oper use a determinist approach
 an optim analysi , strategi and cam softwar for the select of econom cut condit in singl pass turn oper are present use a determinist approach . the optim is base on criteria typifi by the maximum product rate and includ a host of practic constraint . it is shown that the determinist optim approach involv mathemat analys of constrain econom trend and graphic represent on the feed-spe domain provid a clearli defin strategi that not onli provid a uniqu global optimum solut , but also the softwar that is suitabl for on-lin cam applic . a numer studi ha verifi the develop optim strategi and softwar and ha shown the econom benefit of use optim

single pass turning operations
deterministic approach
CAM software
economic cutting conditions
maximum production rate
mathematical analyses
constrained economic trends
cutting conditions optimization
process planning


Development of a computer-aided manufacturing system for profiled edge lamination tooling

Abstract: Profiled edge lamination (PEL) tooling is a promising rapid tooling (RT) method involving the assembly of an array of laminations whose top edges are simultaneously profiled and beveled based on a CAD model of the intended tool surface. To facilitate adoption of this RT method by industry, a comprehensive PEL tooling development system is proposed. The two main parts of this system are: (1) iterative tool design based on thermal and structural models; and (2) fabrication of the tool using a computer-aided manufacturing (CAM) software and abrasive water jet cutting. CAM software has been developed to take lamination slice data (profiles) from any proprietary RP software in the form of polylines and create smooth, kinematically desirable cutting trajectories for each tool lamination. Two cutting trajectory algorithms, called identical equidistant profile segmentation and adaptively vector profiles projection (AVPP), were created for this purpose. By comparing the performance of both algorithms with a benchmark part shape, the AVPP algorithm provided better cutting trajectories for complicated tool geometries. A 15-layer aluminum PEL tool was successfully fabricated using a 5-axis CNC AWJ cutter and NC code generated by the CAM software

develop of a computer-aid manufactur system for profil edg lamin tool
 profil edg lamin ( pel ) tool is a promis rapid tool ( rt ) method involv the assembl of an array of lamin whose top edg are simultan profil and bevel base on a cad model of the intend tool surfac . to facilit adopt of thi rt method by industri , a comprehens pel tool develop system is propos . the two main part of thi system are : ( 1 ) iter tool design base on thermal and structur model ; and ( 2 ) fabric of the tool use a computer-aid manufactur ( cam ) softwar and abras water jet cut . cam softwar ha been develop to take lamin slice data ( profil ) from ani proprietari rp softwar in the form of polylin and creat smooth , kinemat desir cut trajectori for each tool lamin . two cut trajectori algorithm , call ident equidist profil segment and adapt vector profil project ( avpp ) , were creat for thi purpos . by compar the perform of both algorithm with a benchmark part shape , the avpp algorithm provid better cut trajectori for complic tool geometri . a 15-layer aluminum pel tool wa success fabric use a 5-axi cnc awj cutter and nc code gener by the cam softwar


Keen but confused [workflow & content management]

Abstract: IT users find workflow, content and business process management software appealing but by no means straightforward to implement. Pat Sweet reports on our latest research

keen but confus [ workflow & content manag ]
 it user find workflow , content and busi process manag softwar appeal but by no mean straightforward to implement . pat sweet report on our latest research

workflow
content management
business process management software
research
survey
market overview


CRM: approaching zenith

Abstract: Looks at how manufacturers are starting to warm up to the concept of customer relationship management. CRM has matured into what is expected to be big business. As CRM software evolves to its second, some say third, generation, it's likely to be more valuable to holdouts in manufacturing and other sectors

crm : approach zenith
 look at how manufactur are start to warm up to the concept of custom relationship manag . crm ha matur into what is expect to be big busi . as crm softwar evolv to it second , some say third , gener , it 's like to be more valuabl to holdout in manufactur and other sector

CRM
manufacturers
manufacturers
customer relationship management
manufacturing


Server safeguards tax service

Abstract: Peterborough-based tax consultancy IE Taxguard wanted real-time failover protection for important Windows-based applications. Its solution was to implement a powerful failover server from UK supplier Neverfail in order to provide real-time backup for three core production servers

server safeguard tax servic
 peterborough-bas tax consult ie taxguard want real-tim failov protect for import windows-bas applic . it solut wa to implement a power failov server from uk supplier neverfail in order to provid real-tim backup for three core product server

tax consultancy
IE Taxguard
failover server
Neverfail
backup


Modeling dynamic objects in distributed systems with nested Petri nets

Abstract: Nested Petri nets (NP-nets) is a Petri net extension, allowing tokens in a net marking to be represented by marked nets themselves. The paper discusses applicability of NP-nets for modeling task planning systems, multi-agent systems and recursive-parallel systems. A comparison of NP-nets with some other formalisms, such as OPNs of R. Valk (2000), recursive parallel programs of O. Kushnarenko and Ph. Schnoebelen (1997) and process algebras is given. Some aspects of decidability for object-oriented Petri net extensions are also discussed

model dynam object in distribut system with nest petri net
 nest petri net ( np-net ) is a petri net extens , allow token in a net mark to be repres by mark net themselv . the paper discuss applic of np-net for model task plan system , multi-ag system and recursive-parallel system . a comparison of np-net with some other formal , such as opn of r. valk ( 2000 ) , recurs parallel program of o. kushnarenko and ph . schnoebelen ( 1997 ) and process algebra is given . some aspect of decid for object-ori petri net extens are also discuss

distributed systems
nested Petri nets
multi-agent systems
recursive-parallel systems
process algebras
decidability
object-oriented Petri net
dynamic objects modelling


Adaptive image enhancement for retinal blood vessel segmentation

Abstract: Retinal blood vessel images are enhanced by removing the nonstationary background, which is adaptively estimated based on local neighbourhood information. The result is a much better segmentation of the blood vessels with a simple algorithm and without the need to obtain a priori illumination knowledge of the imaging system

adapt imag enhanc for retin blood vessel segment
 retin blood vessel imag are enhanc by remov the nonstationari background , which is adapt estim base on local neighbourhood inform . the result is a much better segment of the blood vessel with a simpl algorithm and without the need to obtain a priori illumin knowledg of the imag system

adaptive image enhancement
retinal blood vessel images
local neighbourhood information
nonstationary background removal
image segmentation
personal identification
security applications


Efficient allocation of knowledge in distributed business structures

Abstract: Accelerated business processes demand new concepts and realizations of information systems and knowledge databases. This paper presents the concept of the collaborative information space (CIS), which supplies the necessary tools to transform individual knowledge into collective useful information. The creation of 'information objects' in the CIS allows an efficient allocation of information in all business process steps at any time. Furthermore, the specific availability of heterogeneous, distributed data is realized by a Web-based user interface, which enables effective search by a multidimensionally hierarchical composition

effici alloc of knowledg in distribut busi structur
 acceler busi process demand new concept and realiz of inform system and knowledg databas . thi paper present the concept of the collabor inform space ( ci ) , which suppli the necessari tool to transform individu knowledg into collect use inform . the creation of ' inform object ' in the ci allow an effici alloc of inform in all busi process step at ani time . furthermor , the specif avail of heterogen , distribut data is realiz by a web-bas user interfac , which enabl effect search by a multidimension hierarch composit


Applying BGL to computational geometry

Abstract: The author applies Boost Graph Library to the domain of computational geometry. First, he formulates a concrete problem in graph terms. Second, he develops a way to transform the output of an existing algorithm into an appropriate Boost Graph Library data structure. Finally, he implements two new algorithms for my Boost Graph Library graph. The first algorithm gets the job done, but could have been written in any programming language. The second algorithm, however, shows the power of Boost Graph Library's generic programming approach.Graphs, graphics, and generic programming combine in this novel use of the Boost Graph Library

appli bgl to comput geometri
 the author appli boost graph librari to the domain of comput geometri . first , he formul a concret problem in graph term . second , he develop a way to transform the output of an exist algorithm into an appropri boost graph librari data structur . final , he implement two new algorithm for my boost graph librari graph . the first algorithm get the job done , but could have been written in ani program languag . the second algorithm , howev , show the power of boost graph librari 's gener program approach . graph , graphic , and gener program combin in thi novel use of the boost graph librari

computational geometry
Boost Graph Library
generic programming approach
Boost libraries
C++
threads
smart pointers
graph-theoretic concepts
directed graph
file dependencies
BGL graph


Accelerating filtering techniques for numeric CSPs

Abstract: Search algorithms for solving Numeric CSPs (Constraint Satisfaction Problems) make an extensive use of filtering techniques. In this paper we show how those filtering techniques can be accelerated by discovering and exploiting some regularities during the filtering process. Two kinds of regularities are discussed, cyclic phenomena in the propagation queue and numeric regularities of the domains of the variables. We also present in this paper an attempt to unify numeric CSPs solving methods from two distinct communities, that of CSP in artificial intelligence, and that of interval analysis

acceler filter techniqu for numer csp
 search algorithm for solv numer csp ( constraint satisfact problem ) make an extens use of filter techniqu . in thi paper we show how those filter techniqu can be acceler by discov and exploit some regular dure the filter process . two kind of regular are discuss , cyclic phenomena in the propag queue and numer regular of the domain of the variabl . we also present in thi paper an attempt to unifi numer csp solv method from two distinct commun , that of csp in artifici intellig , and that of interv analysi

filtering techniques
Numeric CSPs
search algorithms
Constraint Satisfaction Problems
propagation
artificial intelligence
interval analysis
CSPs-solving
extrapolation methods
pruning


Virtual Development Center

Abstract: The Virtual Development Center of the Institute for Women and Technology seeks to significantly enhance the impact of women on technology. It addresses this goal by increasing the number of women who have input on created technology, enhancing the ways people teach and develop technology, and developing need-based technology that serves the community. Through activities of the Virtual Development Center, a pattern is emerging regarding how computing technologies do or do not satisfy the needs of community groups, particularly those communities serving women. This paper describes the Virtual Development Center program and offers observations on the impact of computing technology on non-technical communities

virtual develop center
 the virtual develop center of the institut for women and technolog seek to significantli enhanc the impact of women on technolog . it address thi goal by increas the number of women who have input on creat technolog , enhanc the way peopl teach and develop technolog , and develop need-bas technolog that serv the commun . through activ of the virtual develop center , a pattern is emerg regard how comput technolog do or do not satisfi the need of commun group , particularli those commun serv women . thi paper describ the virtual develop center program and offer observ on the impact of comput technolog on non-techn commun

Virtual Development Center
women
teaching
community groups
information technology
gender issues
computer science education


Access matters

Abstract: Discusses accessibility needs of people with disabilities, both from the perspective of getting the information from I&R programs (including accessible Web sites, TTY access, Braille, and other mechanisms) and from the perspective of being aware of accessibility needs when referring clients to resources. Includes information on ADA legislation requiring accessibility to public places and recommends several organizations and Web sites for additional information

access matter
 discuss access need of peopl with disabl , both from the perspect of get the inform from i&r program ( includ access web site , tti access , braill , and other mechan ) and from the perspect of be awar of access need when refer client to resourc . includ inform on ada legisl requir access to public place and recommend sever organ and web site for addit inform

accessibility needs
accessible Web sites
TTY access
Braille
ADA legislation
public places
disabled people
information and referral programs


Exploratory study of the adoption of manufacturing technology innovations in the USA and the UK

Abstract: Manufacturing technologies, appropriately implemented, provide competitive advantage to manufacturers. The use of manufacturing technologies across countries is difficult to compare. One such comparison has been provided in the literature with a study of US and Japanese practices in advanced manufacturing technology use using a common questionnaire. The present study compares the use of 17 different technologies in similar industries in the USA (n=1025) and UK (n=166) using a common questionnaire. Largely, there are remarkable similarities between the two countries. This may partly correlate with the heavy traffic in foreign direct investment between the two nations. Notable differences are (1) across-the-board, US manufacturers are ahead of the UK firms in computerized integration with units inside and outside manufacturing organizations; (2) US manufacturers show higher labour productivity, which is consistent with macro-economic data, and (3) more UK manufacturers report the use of soft technologies such as just-in-time, total quality manufacturing and manufacturing cells. Hypotheses for future investigation are proposed

exploratori studi of the adopt of manufactur technolog innov in the usa and the uk
 manufactur technolog , appropri implement , provid competit advantag to manufactur . the use of manufactur technolog across countri is difficult to compar . one such comparison ha been provid in the literatur with a studi of us and japanes practic in advanc manufactur technolog use use a common questionnair . the present studi compar the use of 17 differ technolog in similar industri in the usa ( n=1025 ) and uk ( n=166 ) use a common questionnair . larg , there are remark similar between the two countri . thi may partli correl with the heavi traffic in foreign direct invest between the two nation . notabl differ are ( 1 ) across-the-board , us manufactur are ahead of the uk firm in computer integr with unit insid and outsid manufactur organ ; ( 2 ) us manufactur show higher labour product , which is consist with macro-econom data , and ( 3 ) more uk manufactur report the use of soft technolog such as just-in-tim , total qualiti manufactur and manufactur cell . hypothes for futur investig are propos

manufacturing technology innovations
USA
UK
competitive advantage
foreign direct investment
labour productivity
macro-economic data
soft technologies
just-in-time
total quality manufacturing
manufacturing cells


Work in progress: Developing policies for access to government information in the New South Africa

Abstract: Following South Africa's transition to democracy in 1994, the SA government has adopted policies supporting freedom of expression and freedom of access to information. The Bill of Rights in the new Constitution includes a constitutional right of access to information held by the state. Since 1994 various initiatives have been taken by government and other bodies to promote such access. These include moves to reorganize government printing and publishing, restructure the government's public information services, make government information available on the Internet, and extend telephony and Internet access to poor communities. SA's new Legal Deposit Act, (1997) makes provision for the creation of official publications depositories. The Promotion of Access to Information Act, (2000) was enacted to ensure access to information held by the state and public bodies. However, despite much activity, it has proved difficult to translate principles into practical and well-coordinated measures to improve access to government information. A specific concern is the failure of policy-makers to visualize a role for libraries

work in progress : develop polici for access to govern inform in the new south africa
 follow south africa 's transit to democraci in 1994 , the sa govern ha adopt polici support freedom of express and freedom of access to inform . the bill of right in the new constitut includ a constitut right of access to inform held by the state . sinc 1994 variou initi have been taken by govern and other bodi to promot such access . these includ move to reorgan govern print and publish , restructur the govern 's public inform servic , make govern inform avail on the internet , and extend telephoni and internet access to poor commun . sa 's new legal deposit act , ( 1997 ) make provis for the creation of offici public depositori . the promot of access to inform act , ( 2000 ) wa enact to ensur access to inform held by the state and public bodi . howev , despit much activ , it ha prove difficult to translat principl into practic and well-coordin measur to improv access to govern inform . a specif concern is the failur of policy-mak to visual a role for librari

government information
South Africa
freedom of expression
freedom of access to information
Bill of Rights
constitutional right of access
government printing
public information services
Internet
official publications depositories
public bodies
libraries
government publishing


Networking without wires

Abstract: Several types of devices use radio transmitters to send data over thin air. Are WLANs, wireless local area networks, the end to all cables? Will Dalrymple weighs up the costs and benefits

network without wire
 sever type of devic use radio transmitt to send data over thin air . are wlan , wireless local area network , the end to all cabl ? will dalrympl weigh up the cost and benefit

wireless local area networks
costs
benefits


Entangling atoms in bad cavities

Abstract: We propose a method to produce entangled spin squeezed states of a large number of atoms inside an optical cavity. By illuminating the atoms with bichromatic light, the coupling to the cavity induces pairwise exchange of excitations which entangles the atoms. Unlike most proposals for entangling atoms by cavity QED, our proposal does not require the strong coupling regime g/sup 2// kappa Gamma >>1, where g is the atom cavity coupling strength, kappa is the cavity decay rate, and Gamma is the decay rate of the atoms. In this work the important parameter is Ng/sup 2// kappa Gamma , where N is the number of atoms, and our proposal permits the production of entanglement in bad cavities as long as they contain a large number of atoms

entangl atom in bad caviti
 we propos a method to produc entangl spin squeez state of a larg number of atom insid an optic caviti . by illumin the atom with bichromat light , the coupl to the caviti induc pairwis exchang of excit which entangl the atom . unlik most propos for entangl atom by caviti qed , our propos doe not requir the strong coupl regim g / sup 2// kappa gamma > > 1 , where g is the atom caviti coupl strength , kappa is the caviti decay rate , and gamma is the decay rate of the atom . in thi work the import paramet is ng / sup 2// kappa gamma , where n is the number of atom , and our propos permit the product of entangl in bad caviti as long as they contain a larg number of atom

bad cavities
entangled spin squeezed states
optical cavity
coupling
pairwise exchange
excitations
cavity QED
strong coupling regime
atom cavity coupling strength
cavity decay rate
atom entanglement
bichromatic light illumination


Use of natural language processing to translate clinical information from a database of 889,921 chest radiographic reports

Abstract: The aim was to evaluate translation of chest radiographic reports using natural language processing and to compare the findings with those in the literature. A natural language processor coded 10 years of narrative chest radiographic reports from an urban academic medical center. Coding for 150 reports was compared with manual coding. Frequencies and cooccurrences of 24 clinical conditions (diseases, abnormalities, and clinical states) were estimated. The ratio of right to left lung mass, association of pleural effusion with other conditions, and frequency of bullet and stab wounds were compared with independent observations. The sensitivity and specificity of the system's pneumothorax coding were compared with those of manual financial coding. Internal and external validation in this study confirmed the accuracy of natural language processing for translating chest radiographic narrative reports into a large database of information

use of natur languag process to translat clinic inform from a databas of 889,921 chest radiograph report
 the aim wa to evalu translat of chest radiograph report use natur languag process and to compar the find with those in the literatur . a natur languag processor code 10 year of narr chest radiograph report from an urban academ medic center . code for 150 report wa compar with manual code . frequenc and cooccurr of 24 clinic condit ( diseas , abnorm , and clinic state ) were estim . the ratio of right to left lung mass , associ of pleural effus with other condit , and frequenc of bullet and stab wound were compar with independ observ . the sensit and specif of the system 's pneumothorax code were compar with those of manual financi code . intern and extern valid in thi studi confirm the accuraci of natur languag process for translat chest radiograph narr report into a larg databas of inform

natural language processing
urban academic medical center
pleural effusion
stab wounds
pneumothorax coding
chest radiographic report database
clinical information translation
clinical condition frequency
clinical condition cooccurrence
right to left lung mass ratio
bullet wounds


Choice preferences without inferences: subconscious priming of risk attitudes

Abstract: We present a procedure for subconscious priming of risk attitudes. In Experiment 1, we were reliably able to induce risk-seeking or risk-averse preferences across a range of decision scenarios using this priming procedure. In Experiment 2, we showed that these priming effects can be reversed by drawing participants' attention to the priming event. Our results support claims that the formation of risk preferences can be based on preconscious processing, as for example postulated by the affective primacy hypothesis, rather than rely on deliberative mental operations, as posited by several current models of judgment and decision making

choic prefer without infer : subconsci prime of risk attitud
 we present a procedur for subconsci prime of risk attitud . in experi 1 , we were reliabl abl to induc risk-seek or risk-avers prefer across a rang of decis scenario use thi prime procedur . in experi 2 , we show that these prime effect can be revers by draw particip ' attent to the prime event . our result support claim that the format of risk prefer can be base on preconsci process , as for exampl postul by the affect primaci hypothesi , rather than reli on delib mental oper , as posit by sever current model of judgment and decis make

choice preferences
subconscious priming
risk attitudes
risk-averse preferences
decision scenarios
preconscious processing
affective primacy hypothesis
deliberative mental operations
risk-seeking preferences


A self-organizing context-based approach to the tracking of multiple robot trajectories

Abstract: We have combined competitive and Hebbian learning in a neural network designed to learn and recall complex spatiotemporal sequences. In such sequences, a particular item may occur more than once or the sequence may share states with another sequence. Processing of repeated/shared states is a hard problem that occurs very often in the domain of robotics. The proposed model consists of two groups of synaptic weights: competitive interlayer and Hebbian intralayer connections, which are responsible for encoding respectively the spatial and temporal features of the input sequence. Three additional mechanisms allow the network to deal with shared states: context units, neurons disabled from learning, and redundancy used to encode sequence states. The network operates by determining the current and the next state of the learned sequences. The model is simulated over various sets of robot trajectories in order to evaluate its storage and retrieval abilities; its sequence sampling effects; its robustness to noise and its tolerance to fault

a self-organ context-bas approach to the track of multipl robot trajectori
 we have combin competit and hebbian learn in a neural network design to learn and recal complex spatiotempor sequenc . in such sequenc , a particular item may occur more than onc or the sequenc may share state with anoth sequenc . process of repeat / share state is a hard problem that occur veri often in the domain of robot . the propos model consist of two group of synapt weight : competit interlay and hebbian intralay connect , which are respons for encod respect the spatial and tempor featur of the input sequenc . three addit mechan allow the network to deal with share state : context unit , neuron disabl from learn , and redund use to encod sequenc state . the network oper by determin the current and the next state of the learn sequenc . the model is simul over variou set of robot trajectori in order to evalu it storag and retriev abil ; it sequenc sampl effect ; it robust to nois and it toler to fault

self-organizing context-based approach
robot trajectories
Hebbian learning
complex spatiotemporal sequences
shared states
synaptic weights
Hebbian intralayer connections
context units
sequence states
retrieval abilities
sequence sampling effects
trajectories tracking
competitive learning
competitive interlayer connections
unsupervised learning
storage abilities
fault tolerance


Intensity based affine registration including feature similarity for spatial normalization

Abstract: This paper presents a new spatial normalization with affine transformation. The quantitative comparison of brain architecture across different subjects requires a common coordinate system. For the analysis of a specific brain area, it is necessary to normalize and compare a region of interest and the global brain. The intensity based registration method matches the global brain well, but a region of interest may not be locally normalized compared to the feature based method. The method in this paper uses feature similarities of local regions as well as intensity similarities. The lateral ventricle and central gray nuclei of the brain, including the corpus callosum, which is used for features in schizophrenia detection, is appropriately normalized. Our method reduces the difference of feature areas such as the corpus callosum (7.7%, 2.4%) and lateral ventricle (8.2%, 13.5%) compared with mutual information and Talairach methods

intens base affin registr includ featur similar for spatial normal
 thi paper present a new spatial normal with affin transform . the quantit comparison of brain architectur across differ subject requir a common coordin system . for the analysi of a specif brain area , it is necessari to normal and compar a region of interest and the global brain . the intens base registr method match the global brain well , but a region of interest may not be local normal compar to the featur base method . the method in thi paper use featur similar of local region as well as intens similar . the later ventricl and central gray nuclei of the brain , includ the corpu callosum , which is use for featur in schizophrenia detect , is appropri normal . our method reduc the differ of featur area such as the corpu callosum ( 7.7 % , 2.4 % ) and later ventricl ( 8.2 % , 13.5 % ) compar with mutual inform and talairach method

intensity based affine registration
feature similarity
feature similarity
spatial normalization
affine transformation
brain architecture
common coordinate system
region of interest
global brain
lateral ventricle
central gray nuclei
corpus callosum
schizophrenia detection
Talairach method
feature similarities
mutual information method


Digital stochastic realization of complex analog controllers

Abstract: Stochastic logic is based on digital processing of a random pulse stream, where the information is codified as the probability of a high level in a finite sequence. This binary pulse sequence can be digitally processed exploiting the similarity between Boolean algebra and statistical algebra. Given a random pulse sequence, any Boolean operation among individual pulses will correspond to an algebraic expression among the variables represented by their respective average pulse rates. Subsequently, this pulse stream can be digitally processed to perform analog operations. In this paper, we propose a stochastic approach to the digital implementation of complex controllers using programmable devices as an alternative to traditional digital signal processors. As an example, a practical realization of nonlinear dissipative controllers for a series resonant converter is presented

digit stochast realiz of complex analog control
 stochast logic is base on digit process of a random puls stream , where the inform is codifi as the probabl of a high level in a finit sequenc . thi binari puls sequenc can be digit process exploit the similar between boolean algebra and statist algebra . given a random puls sequenc , ani boolean oper among individu puls will correspond to an algebra express among the variabl repres by their respect averag puls rate . subsequ , thi puls stream can be digit process to perform analog oper . in thi paper , we propos a stochast approach to the digit implement of complex control use programm devic as an altern to tradit digit signal processor . as an exampl , a practic realiz of nonlinear dissip control for a seri reson convert is present

digital stochastic realization
complex analog controllers
stochastic logic
random pulse stream
pulse stream
finite sequence
binary pulse sequence
Boolean algebra
statistical algebra
random pulse sequence
Boolean operation
average pulse rates
stochastic approach
programmable devices
nonlinear dissipative controllers
series resonant converter
parallel resonant DC-to-DC converters
series resonant DC-to-DC converters


Comparison of push and pull systems with transporters: a metamodelling approach

Abstract: Analyses push and pull systems with transportation consideration. A multiproduct, multiline, multistage production system was used to compare the two systems. The effects of four factors (processing time variation, demand variation, transporters, batch size) on throughput rate, average waiting time in the system and machine utilization were studied. The study uses metamodels to compare the two systems. They serve a dual purpose of expressing system performance measures in the form of a simple equation and reducing computational time when comparing the two systems. Research shows that the number of transporters used and the batch size have a significant effect on the performance measures of both systems

comparison of push and pull system with transport : a metamodel approach
 analys push and pull system with transport consider . a multiproduct , multilin , multistag product system wa use to compar the two system . the effect of four factor ( process time variat , demand variat , transport , batch size ) on throughput rate , averag wait time in the system and machin util were studi . the studi use metamodel to compar the two system . they serv a dual purpos of express system perform measur in the form of a simpl equat and reduc comput time when compar the two system . research show that the number of transport use and the batch size have a signific effect on the perform measur of both system

multiproduct multiline multistage production system


Cat and class: what use are these skills to the new legal information professional?

Abstract: This article looks at the cataloguing and classification skills taught on information studies courses and the use these skills are to new legal information professionals. The article is based on the opinions of nine new legal information professionals from both academic and law firm libraries

cat and class : what use are these skill to the new legal inform profession ?
 thi articl look at the catalogu and classif skill taught on inform studi cours and the use these skill are to new legal inform profession . the articl is base on the opinion of nine new legal inform profession from both academ and law firm librari

legal information professional
cataloguing
classification
information studies courses
law firm libraries
academic libraries