A nonlinear modulation strategy for hybrid AC/DC power systems

Abstract: A nonlinear control strategy to improve transient stability of a multi-machine AC power system with several DC links terminated in the presence of large disturbances is presented. The approach proposed in this paper is based on differential geometric theory, and the HVDC systems are taken as a variable admittance connected at the inverter or rectifier AC bus. After deriving the analytical description of the relationship between the variable admittance and active power flows of each generator, the traditional generator dynamic equations can thus be expressed with the variable admittance of HVDC systems as an additional state variable and changed to an affine form, which is suitable for global linearization method being used to determine its control variable. An important feature of the proposed method is that, the modulated DC power is an adaptive and non-linear function of AC system states, and it can be realized by local feedback and less transmitted data from, adjacent generators. The design procedure is tested on a dual-infeed hybrid AC/DC system

a nonlinear modul strategi for hybrid ac / dc power system
 a nonlinear control strategi to improv transient stabil of a multi-machin ac power system with sever dc link termin in the presenc of larg disturb is present . the approach propos in thi paper is base on differenti geometr theori , and the hvdc system are taken as a variabl admitt connect at the invert or rectifi ac bu . after deriv the analyt descript of the relationship between the variabl admitt and activ power flow of each gener , the tradit gener dynam equat can thu be express with the variabl admitt of hvdc system as an addit state variabl and chang to an affin form , which is suitabl for global linear method be use to determin it control variabl . an import featur of the propos method is that , the modul dc power is an adapt and non-linear function of ac system state , and it can be realiz by local feedback and less transmit data from , adjac gener . the design procedur is test on a dual-infe hybrid ac / dc system

nonlinear modulation strategy
hybrid AC/DC power systems
nonlinear control strategy
transient stability
multi-machine AC power system
DC links
differential geometric theory
HVDC systems
variable admittance
inverter
rectifier AC bus
active power flows
generator dynamic equations
affine form
global linearization method
local feedback
adjacent generators
dual-infeed hybrid AC/DC system


Abstract: Descriptological foundations of programming are constructed. An explication of the concept of a descriptive process is given. The operations of introduction and elimination of abstraction at the level of processes are refined. An intensional concept of a bipolar function is introduced. An explication of the concept of introduction and extraction of abstraction at the bipole level is given. On this basis, a complete set of descriptological operations is constructed

descriptolog foundat of program
 descriptolog foundat of program are construct . an explic of the concept of a descript process is given . the oper of introduct and elimin of abstract at the level of process are refin . an intension concept of a bipolar function is introduc . an explic of the concept of introduct and extract of abstract at the bipol level is given . on thi basi , a complet set of descriptolog oper is construct

descriptological foundations
programming
descriptive process
intensional concept
bipolar function
bipole level


Synchronizing experiments with linear interval systems

Abstract: Concerns generalized control problems without exact information. <P>A method of constructing a minimal synchronizing sequence for a linear interval system over the field of real numbers is developed. This problem is reduced to a system of linear inequalities

synchron experi with linear interv system
 concern gener control problem without exact inform . < p > a method of construct a minim synchron sequenc for a linear interv system over the field of real number is develop . thi problem is reduc to a system of linear inequ

minimal synchronizing sequence construction


Fuzzy polynomial neural networks: hybrid architectures of fuzzy modeling

Abstract: We introduce a concept of fuzzy polynomial neural networks (FPNNs), a hybrid modeling architecture combining polynomial neural networks (PNNs) and fuzzy neural networks (FNNs). The development of the FPNNs dwells on the technologies of computational intelligence (CI), namely fuzzy sets, neural networks, and genetic algorithms. The structure of the FPNN results from a synergistic usage of FNN and PNN. FNNs contribute to the formation of the premise part of the rule-based structure of the FPNN. The consequence part of the FPNN is designed using PNNs. The structure of the PNN is not fixed in advance as it usually takes place in the case of conventional neural networks, but becomes organized dynamically to meet the required approximation error. We exploit a group method of data handling (GMDH) to produce this dynamic topology of the network. The performance of the FPNN is quantified through experimentation that exploits standard data already used in fuzzy modeling. The obtained experimental results reveal that the proposed networks exhibit high accuracy and generalization capabilities in comparison to other similar fuzzy models

fuzzi polynomi neural network : hybrid architectur of fuzzi model
 we introduc a concept of fuzzi polynomi neural network ( fpnn ) , a hybrid model architectur combin polynomi neural network ( pnn ) and fuzzi neural network ( fnn ) . the develop of the fpnn dwell on the technolog of comput intellig ( ci ) , name fuzzi set , neural network , and genet algorithm . the structur of the fpnn result from a synergist usag of fnn and pnn . fnn contribut to the format of the premis part of the rule-bas structur of the fpnn . the consequ part of the fpnn is design use pnn . the structur of the pnn is not fix in advanc as it usual take place in the case of convent neural network , but becom organ dynam to meet the requir approxim error . we exploit a group method of data handl ( gmdh ) to produc thi dynam topolog of the network . the perform of the fpnn is quantifi through experiment that exploit standard data alreadi use in fuzzi model . the obtain experiment result reveal that the propos network exhibit high accuraci and gener capabl in comparison to other similar fuzzi model

fuzzy polynomial neural networks
hybrid architectures
fuzzy modeling
computational intelligence
fuzzy sets
genetic algorithms
group method of data handling
GMDH
dynamic topology
highly nonlinear rule-based models
fuzzy inference method
learning
standard backpropagation
membership functions
learning rates
momentum coefficients
genetic optimization


Loudspeaker voice-coil inductance losses: circuit models, parameter estimation, and effect on frequency response

Abstract: When the series resistance is separated and treated as a separate element, it is shown that losses in an inductor require the ratio of the flux to MMF in the core to be frequency dependent. For small-signal operation, this dependence leads to a circuit model composed of a lossless inductor and a resistor in parallel, both of which are frequency dependent. Mathematical expressions for these elements are derived under the assumption that the ratio of core flux to MMF varies as omega /sup n-1/, where n is a constant. A linear regression technique is described for extracting the model parameters from measured data. Experimental data are presented to justify the model for the lossy inductance of a loudspeaker voice-coil. A SPICE example is presented to illustrate the effects of voice-coil inductor losses on the frequency response of a typical driver

loudspeak voice-coil induct loss : circuit model , paramet estim , and effect on frequenc respons
 when the seri resist is separ and treat as a separ element , it is shown that loss in an inductor requir the ratio of the flux to mmf in the core to be frequenc depend . for small-sign oper , thi depend lead to a circuit model compos of a lossless inductor and a resistor in parallel , both of which are frequenc depend . mathemat express for these element are deriv under the assumpt that the ratio of core flux to mmf vari as omega /sup n-1/ , where n is a constant . a linear regress techniqu is describ for extract the model paramet from measur data . experiment data are present to justifi the model for the lossi induct of a loudspeak voice-coil . a spice exampl is present to illustr the effect of voice-coil inductor loss on the frequenc respons of a typic driver

loudspeaker voice-coil inductance losses


7 key tests in choosing your Web site firm

Abstract: Most legal firms now have a Web site and are starting to evaluate the return on their investment. The paper looks at factors involved when choosing a firm to help set up or improve a Web site. (1) Look for a company that combines technical skills and business experience. (2) Look for a company that offers excellent customer service. (3) Check that the Web site firm is committed to developing and proactively updating the Web site. (4) Make sure the firm has a proven track record and a good portfolio. (5) Look for a company with both a breadth as well as depth of skills. (6) Make sure the firm can deliver work on target, in budget and to specification. (7) Ensure that you will enjoy working and feel comfortable with the Web site firm staff

7 key test in choos your web site firm
 most legal firm now have a web site and are start to evalu the return on their invest . the paper look at factor involv when choos a firm to help set up or improv a web site . ( 1 ) look for a compani that combin technic skill and busi experi . ( 2 ) look for a compani that offer excel custom servic . ( 3 ) check that the web site firm is commit to develop and proactiv updat the web site . ( 4 ) make sure the firm ha a proven track record and a good portfolio . ( 5 ) look for a compani with both a breadth as well as depth of skill . ( 6 ) make sure the firm can deliv work on target , in budget and to specif . ( 7 ) ensur that you will enjoy work and feel comfort with the web site firm staff

Web site
legal firms
technical skills
business experience
customer service
proactive updating
return on investment


An algorithm to generate all spanning trees with flow

Abstract: Spanning tree enumeration in undirected graphs is an important issue and task in many problems encountered in computer network and circuit analysis. This paper discusses the spanning tree with flow for the case that there are flow requirements between each node pair. An algorithm based on minimal paths (MPs) is proposed to generate all spanning trees without flow. The proposed algorithm is a structured approach, which splits the system into structural MPs first, and also all steps in it are easy to follow

an algorithm to gener all span tree with flow
 span tree enumer in undirect graph is an import issu and task in mani problem encount in comput network and circuit analysi . thi paper discuss the span tree with flow for the case that there are flow requir between each node pair . an algorithm base on minim path ( mp ) is propos to gener all span tree without flow . the propos algorithm is a structur approach , which split the system into structur mp first , and also all step in it are easi to follow

spanning trees
undirected graphs
circuit analysis
minimal paths
computer network analysis


Warranty reserves for nonstationary sales processes

Abstract: Estimation of warranty costs, in the event of product failure within the warranty period, is of importance to the manufacturer. Costs associated with replacement or repair of the product are usually drawn from a warranty reserve fund created by the manufacturer. Considering a stochastic sales process, first and second moments (and thereby the variance) are derived for the manufacturer's total discounted warranty cost of a single sale for single-component items under four different warranty policies from a manufacturer's point of view. These servicing strategies represent a renewable free-replacement, nonrenewable free-replacement, renewable pro-rata, and a nonrenewable minimal-repair warranty plans. The results are extended to determine the mean and variance of total discounted warranty costs for the total sales over the life cycle of the product. Furthermore, using a normal approximation, warranty reserves necessary for a certain protection level, so that reserves are not completely depleted, are found. Results and their managerial implications are studied through an extensive example

warranti reserv for nonstationari sale process
 estim of warranti cost , in the event of product failur within the warranti period , is of import to the manufactur . cost associ with replac or repair of the product are usual drawn from a warranti reserv fund creat by the manufactur . consid a stochast sale process , first and second moment ( and therebi the varianc ) are deriv for the manufactur 's total discount warranti cost of a singl sale for single-compon item under four differ warranti polici from a manufactur 's point of view . these servic strategi repres a renew free-replac , nonrenew free-replac , renew pro-rata , and a nonrenew minimal-repair warranti plan . the result are extend to determin the mean and varianc of total discount warranti cost for the total sale over the life cycl of the product . furthermor , use a normal approxim , warranti reserv necessari for a certain protect level , so that reserv are not complet deplet , are found . result and their manageri implic are studi through an extens exampl

P P P P P P P P P P P P P P P P R R R R P R


Self-organizing feature maps predicting sea levels

Abstract: In this paper, a new method for predicting sea levels employing self-organizing feature maps is introduced. For that purpose the maps are transformed from an unsupervised learning procedure to a supervised one. Two concepts, originally developed to solve the problems of convergence of other network types, are proposed to be applied to Kohonen networks: a functional relationship between the number of neurons and the number of learning examples and a criterion to break off learning. The latter one can be shown to be conform with the process of self-organization by using U-matrices for visualization of the learning procedure. The predictions made using these neural models are compared for accuracy with observations and with the prognoses prepared using six models: two hydrodynamic models, a statistical model, a nearest neighbor model, the persistence model, and the verbal forecasts that are broadcast and kept on record by the Sea Level Forecast Service of the Federal Maritime and Hydrography Agency (BSH) in Hamburg. Before training the maps, the meteorological and oceanographic situation has to be condensed as well as possible, and the weight and learning vectors have to be made as small as possible. The self-organizing feature maps predict sea levels better than all six models of comparison

self-organ featur map predict sea level
 in thi paper , a new method for predict sea level employ self-organ featur map is introduc . for that purpos the map are transform from an unsupervis learn procedur to a supervis one . two concept , origin develop to solv the problem of converg of other network type , are propos to be appli to kohonen network : a function relationship between the number of neuron and the number of learn exampl and a criterion to break off learn . the latter one can be shown to be conform with the process of self-organ by use u-matric for visual of the learn procedur . the predict made use these neural model are compar for accuraci with observ and with the prognos prepar use six model : two hydrodynam model , a statist model , a nearest neighbor model , the persist model , and the verbal forecast that are broadcast and kept on record by the sea level forecast servic of the feder maritim and hydrographi agenc ( bsh ) in hamburg . befor train the map , the meteorolog and oceanograph situat ha to be condens as well as possibl , and the weight and learn vector have to be made as small as possibl . the self-organ featur map predict sea level better than all six model of comparison

self-organizing feature maps
Kohonen networks
neurons
U-matrices
visualization
hydrodynamic models
statistical model
nearest neighbor model
persistence model
verbal forecasts
Sea Level Forecast Service
Federal Maritime and Hydrography Agency
oceanographic situation
learning vectors
sea level prediction
supervised learning
meteorological situation


An unconditionally stable extended (USE) finite-element time-domain solution of active nonlinear microwave circuits using perfectly matched layers

Abstract: This paper proposes an extension of the unconditionally stable finite-element time-domain (FETD) method for the global electromagnetic analysis of active microwave circuits. This formulation has two advantages. First, the time-step size is no longer governed by the spatial discretization of the mesh, but rather by the Nyquist sampling criterion. Second, the implementation of the truncation by the perfectly matched layers (PML) is straightforward. An anisotropic PML absorbing material is presented for the truncation of FETD lattices. Reflection less than -50 dB is obtained numerically over the entire propagation bandwidth in waveguide and microstrip line. A benchmark test on a microwave amplifier indicates that this extended FETD algorithm is not only superior to finite-difference time-domain-based algorithm in mesh flexibility and simulation accuracy, but also reduces computation time dramatically

an uncondit stabl extend ( use ) finite-el time-domain solut of activ nonlinear microwav circuit use perfectli match layer
 thi paper propos an extens of the uncondit stabl finite-el time-domain ( fetd ) method for the global electromagnet analysi of activ microwav circuit . thi formul ha two advantag . first , the time-step size is no longer govern by the spatial discret of the mesh , but rather by the nyquist sampl criterion . second , the implement of the truncat by the perfectli match layer ( pml ) is straightforward . an anisotrop pml absorb materi is present for the truncat of fetd lattic . reflect less than -50 db is obtain numer over the entir propag bandwidth in waveguid and microstrip line . a benchmark test on a microwav amplifi indic that thi extend fetd algorithm is not onli superior to finite-differ time-domain-bas algorithm in mesh flexibl and simul accuraci , but also reduc comput time dramat

active nonlinear microwave circuits
perfectly matched layers
global electromagnetic analysis
time-step size
Nyquist sampling criterion
anisotropic PML absorbing material
waveguide
microstrip line
microwave amplifier
mesh flexibility
simulation accuracy
unconditionally stable FETD method
finite-element time-domain method
global EM analysis
PML truncation
FETD lattices truncation
computation time reduction


Fault-tolerant computer-aided control systems with multiversion-threshold adaptation: adaptation methods, reliability estimation, and choice of an architecture

Abstract: For multiversion majority-redundant computer-aided control systems, systematization of adaptation methods that are stable to hardware and software failures, a method for estimating their reliability from an event graph model, and a method for selecting a standard architecture with regard for reliability requirements are studied

fault-toler computer-aid control system with multiversion-threshold adapt : adapt method , reliabl estim , and choic of an architectur
 for multivers majority-redund computer-aid control system , systemat of adapt method that are stabl to hardwar and softwar failur , a method for estim their reliabl from an event graph model , and a method for select a standard architectur with regard for reliabl requir are studi

fault-tolerant computer-aided control systems


Presentation media, information complexity, and learning outcomes

Abstract: Multimedia computing provides a variety of information presentation modality combinations. Educators have observed that visuals enhance learning which suggests that multimedia presentations should be superior to text-only and text with static pictures in facilitating optimal human information processing and, therefore, comprehension. The article reports the findings from a 3 (text-only, overhead slides, and multimedia presentation)*2 (high and low information complexity) factorial experiment. Subjects read a text script, viewed an acetate overhead slide presentation, or viewed a multimedia presentation depicting the greenhouse effect (low complexity) or photocopier operation (high complexity). Multimedia was superior to text-only and overhead slides for comprehension. Information complexity diminished comprehension and perceived presentation quality. Multimedia was able to reduce the negative impact of information complexity on comprehension and increase the extent of sustained attention to the presentation. These findings suggest that multimedia presentations invoke the use of both the verbal and visual working memory channels resulting in a reduction of the cognitive load imposed by increased information complexity. Moreover, multimedia superiority in facilitating comprehension goes beyond its ability to increase sustained attention; the quality and effectiveness of information processing attained (i.e., use of verbal and visual working memory) is also significant

present media , inform complex , and learn outcom
 multimedia comput provid a varieti of inform present modal combin . educ have observ that visual enhanc learn which suggest that multimedia present should be superior to text-onli and text with static pictur in facilit optim human inform process and , therefor , comprehens . the articl report the find from a 3 ( text-onli , overhead slide , and multimedia presentation)*2 ( high and low inform complex ) factori experi . subject read a text script , view an acet overhead slide present , or view a multimedia present depict the greenhous effect ( low complex ) or photocopi oper ( high complex ) . multimedia wa superior to text-onli and overhead slide for comprehens . inform complex diminish comprehens and perceiv present qualiti . multimedia wa abl to reduc the neg impact of inform complex on comprehens and increas the extent of sustain attent to the present . these find suggest that multimedia present invok the use of both the verbal and visual work memori channel result in a reduct of the cognit load impos by increas inform complex . moreov , multimedia superior in facilit comprehens goe beyond it abil to increas sustain attent ; the qualiti and effect of inform process attain ( i.e. , use of verbal and visual work memori ) is also signific

P P P P P P P P P P P P P P P P P P P M R R P


A humanist's legacy in medical informatics: visions and accomplishments of Professor Jean-Raoul Scherrer

Abstract: The objective is to report on the work of Prof. Jean-Raoul Scherrer, and show how his humanist vision, medical skills and scientific background have enabled and shaped the development of medical informatics over the last 30 years. Starting with the mainframe-based patient-centred hospital information system DIOGENE in the 70s, Prof. Scherrer developed, implemented and evolved innovative concepts of man-machine interfaces, distributed and federated environments, leading the way with information systems that obstinately focused on the support of care providers and patients. Through a rigorous design of terminologies and ontologies, the DIOGENE data would then serve as a basis for the development of clinical research, data mining, and lead to innovative natural language processing techniques. In parallel, Prof. Scherrer supported the development of medical image management, ranging from a distributed picture archiving and communication systems (PACS) to molecular imaging of protein electrophoreses. Recognizing the need for improving the quality and trustworthiness of medical information of the Web, Prof. Scherrer created the Health-On-the Net (HON) foundation. These achievements, made possible thanks to his visionary mind, deep humanism, creativity, generosity and determination, have made of Prof. Scherrer a true pioneer and leader of the human-centered, patient-oriented application of information technology for improving healthcare

a humanist 's legaci in medic informat : vision and accomplish of professor jean-raoul scherrer
 the object is to report on the work of prof. jean-raoul scherrer , and show how hi humanist vision , medic skill and scientif background have enabl and shape the develop of medic informat over the last 30 year . start with the mainframe-bas patient-centr hospit inform system diogen in the 70 , prof. scherrer develop , implement and evolv innov concept of man-machin interfac , distribut and feder environ , lead the way with inform system that obstin focus on the support of care provid and patient . through a rigor design of terminolog and ontolog , the diogen data would then serv as a basi for the develop of clinic research , data mine , and lead to innov natur languag process techniqu . in parallel , prof. scherrer support the develop of medic imag manag , rang from a distribut pictur archiv and commun system ( pac ) to molecular imag of protein electrophores . recogn the need for improv the qualiti and trustworthi of medic inform of the web , prof. scherrer creat the health-on-th net ( hon ) foundat . these achiev , made possibl thank to hi visionari mind , deep human , creativ , generos and determin , have made of prof. scherrer a true pioneer and leader of the human-cent , patient-ori applic of inform technolog for improv healthcar

mainframe based patient centered hospital information system


I-WAP: an intelligent WAP site management system

Abstract: The popularity regarding wireless communications is such that more and more WAP sites have been developed with wireless markup language (WML). Meanwhile, to translate hypertext markup language (HTML) pages into proper WML ones becomes imperative since it is difficult for WAP users to read most contents designed for PC users via their mobile phone screens. However, for those sites that have been maintained with hypertext markup language (HTML), considerable time and manpower costs will be incurred to rebuild them with WML. In this paper, we propose an intelligent WAP site management system to cope with these problems. With the help of the intelligent management system, the original contents of HTML Web sites can be automatically translated to proper WAP content in an efficient way. As a consequence, the costs associated with maintaining WAP sites could be significantly reduced. The management system also allows the system manager to define the relevance of numerals and keywords for removing unimportant or meaningless contents. The original contents will be reduced and reorganized to fit the size of mobile phone screens, thus reducing the communication cost and enhancing readability. Numerical results gained through various experiments have evinced the effective performance of the WAP management system

i-wap : an intellig wap site manag system
 the popular regard wireless commun is such that more and more wap site have been develop with wireless markup languag ( wml ) . meanwhil , to translat hypertext markup languag ( html ) page into proper wml one becom imper sinc it is difficult for wap user to read most content design for pc user via their mobil phone screen . howev , for those site that have been maintain with hypertext markup languag ( html ) , consider time and manpow cost will be incur to rebuild them with wml . in thi paper , we propos an intellig wap site manag system to cope with these problem . with the help of the intellig manag system , the origin content of html web site can be automat translat to proper wap content in an effici way . as a consequ , the cost associ with maintain wap site could be significantli reduc . the manag system also allow the system manag to defin the relev of numer and keyword for remov unimport or meaningless content . the origin content will be reduc and reorgan to fit the size of mobil phone screen , thu reduc the commun cost and enhanc readabl . numer result gain through variou experi have evinc the effect perform of the wap manag system

I-WAP
intelligent WAP site management system
wireless communication
wireless markup language
hypertext markup language
mobile phone
communication cost
readability
HTML pages
wireless mobile Internet


Novel ZE-isomerism descriptors derived from molecular topology and their application to QSAR analysis

Abstract: We introduce several series of novel ZE-isomerism descriptors derived directly from two-dimensional molecular topology. These descriptors make use of a quantity named ZE-isomerism correction, which is added to the vertex degrees of atoms connected by double bonds in Z and E configurations. This approach is similar to the one described previously for topological chirality descriptors (Golbraikh, A., et al. J. Chem. Inf. Comput. Sci. 2001, 41, 147-158). The ZE-isomerism descriptors include modified molecular connectivity indices, overall Zagreb indices, extended connectivity, overall connectivity, and topological charge indices. They can be either real or complex numbers. Mathematical properties of different subgroups of ZE-isomerism descriptors are discussed. These descriptors circumvent the inability of conventional topological indices to distinguish between Z and E isomers. The applicability of ZE-isomerism descriptors to QSAR analysis is demonstrated in the studies of a series of 131 anticancer agents inhibiting tubulin polymerization

novel ze-isomer descriptor deriv from molecular topolog and their applic to qsar analysi
 we introduc sever seri of novel ze-isomer descriptor deriv directli from two-dimension molecular topolog . these descriptor make use of a quantiti name ze-isomer correct , which is ad to the vertex degre of atom connect by doubl bond in z and e configur . thi approach is similar to the one describ previous for topolog chiral descriptor ( golbraikh , a. , et al . j. chem . inf . comput . sci . 2001 , 41 , 147 - 158 ) . the ze-isomer descriptor includ modifi molecular connect indic , overal zagreb indic , extend connect , overal connect , and topolog charg indic . they can be either real or complex number . mathemat properti of differ subgroup of ze-isomer descriptor are discuss . these descriptor circumv the inabl of convent topolog indic to distinguish between z and e isom . the applic of ze-isomer descriptor to qsar analysi is demonstr in the studi of a seri of 131 anticanc agent inhibit tubulin polymer

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Support vector machines model for classification of thermal error in machine tools

Abstract: This paper addresses a change in the concept of machine tool thermal error prediction which has been hitherto carried out by directly mapping them with the temperature of critical elements on the machine. The model developed herein using support vector machines, a powerful data-training algorithm, seeks to account for the impact of specific operating conditions, in addition to temperature variation, on the effective prediction of thermal errors. Several experiments were conducted to study the error pattern, which was found to change significantly with variation in operating conditions. This model attempts to classify the error based on operating conditions. Once classified, the error is then predicted based on the temperature states. This paper also briefly describes the concept of the implementation of such a comprehensive model along with an on-line error assessment and calibration system in a PC-based open-architecture controller environment, so that it could be employed in regular production for the purpose of periodic calibration of machine tools

support vector machin model for classif of thermal error in machin tool
 thi paper address a chang in the concept of machin tool thermal error predict which ha been hitherto carri out by directli map them with the temperatur of critic element on the machin . the model develop herein use support vector machin , a power data-train algorithm , seek to account for the impact of specif oper condit , in addit to temperatur variat , on the effect predict of thermal error . sever experi were conduct to studi the error pattern , which wa found to chang significantli with variat in oper condit . thi model attempt to classifi the error base on oper condit . onc classifi , the error is then predict base on the temperatur state . thi paper also briefli describ the concept of the implement of such a comprehens model along with an on-lin error assess and calibr system in a pc-base open-architectur control environ , so that it could be employ in regular product for the purpos of period calibr of machin tool


Preintegration lateral inhibition enhances unsupervised learning

Abstract: A large and influential class of neural network architectures uses postintegration lateral inhibition as a mechanism for competition. We argue that these algorithms are computationally deficient in that they fail to generate, or learn, appropriate perceptual representations under certain circumstances. An alternative neural network architecture is presented here in which nodes compete for the right to receive inputs rather than for the right to generate outputs. This form of competition, implemented through preintegration lateral inhibition, does provide appropriate coding properties and can be used to learn such representations efficiently. Furthermore, this architecture is consistent with both neuroanatomical and neuropsychological data. We thus argue that preintegration lateral inhibition has computational advantages over conventional neural network architectures while remaining equally biologically plausible

preintegr later inhibit enhanc unsupervis learn
 a larg and influenti class of neural network architectur use postintegr later inhibit as a mechan for competit . we argu that these algorithm are comput defici in that they fail to gener , or learn , appropri perceptu represent under certain circumst . an altern neural network architectur is present here in which node compet for the right to receiv input rather than for the right to gener output . thi form of competit , implement through preintegr later inhibit , doe provid appropri code properti and can be use to learn such represent effici . furthermor , thi architectur is consist with both neuroanatom and neuropsycholog data . we thu argu that preintegr later inhibit ha comput advantag over convent neural network architectur while remain equal biolog plausibl

preintegration lateral inhibition
unsupervised learning
neural network architectures
neural network
postintegration lateral inhibition
competition


Power electronics spark new simulation challenges

Abstract: This article discusses some of the changes that have taken place in power systems and explores some of the inherent requirements for simulation technologies in order to keep up with this rapidly changing environment. The authors describe how energy utilities are realizing that, with the appropriate tools, they can train and sustain engineers who can maintain a great insight into system dynamics

power electron spark new simul challeng
 thi articl discuss some of the chang that have taken place in power system and explor some of the inher requir for simul technolog in order to keep up with thi rapidli chang environ . the author describ how energi util are realiz that , with the appropri tool , they can train and sustain engin who can maintain a great insight into system dynam

power electronics
simulation challenges
simulation technologies
power system computer simulation
electric utilities


Four factors influencing the fair market value of out-of print books. 2

Abstract: Fot pt.1 see ibid., p.71-8 (2002). Data from the fifty-six titles examined qualitatively in the Patterson study are examined quantitatively. In addition to the four factors of edition, condition, dust jacket, and autograph that were hypothesized to influence the value of a book, four other factors for which information was available in the data were examined

four factor influenc the fair market valu of out-of print book . 2
 fot pt.1 see ibid . , p.71 - 8 ( 2002 ) . data from the fifty-six titl examin qualit in the patterson studi are examin quantit . in addit to the four factor of edit , condit , dust jacket , and autograph that were hypothes to influenc the valu of a book , four other factor for which inform wa avail in the data were examin

fair market value
out-of-print books
quantitative analysis
pricing
economics
publisher


Strain contouring using Gabor filters: principle and algorithm

Abstract: Moire interferometry is a powerful technique for high sensitivity in-plane deformation contouring. However, from an engineering viewpoint, the derivatives of displacement, i.e., strain, are the desired parameter. Thus there is a need to differentiate the displacement field. Optical and digital methods have been proposed for this differentiation. Optical methods provide contours that still need to be quantified, while digital methods suffer from drawbacks inherent in the digital differentiation process. We describe a novel approach of strain segmentation for the moire pattern using a multichannel Gabor filter. Appropriate filter design allows for user-specific segmentation, which is essentially in engineering design and analysis

strain contour use gabor filter : principl and algorithm
 moir interferometri is a power techniqu for high sensit in-plan deform contour . howev , from an engin viewpoint , the deriv of displac , i.e. , strain , are the desir paramet . thu there is a need to differenti the displac field . optic and digit method have been propos for thi differenti . optic method provid contour that still need to be quantifi , while digit method suffer from drawback inher in the digit differenti process . we describ a novel approach of strain segment for the moir pattern use a multichannel gabor filter . appropri filter design allow for user-specif segment , which is essenti in engin design and analysi


Correlation of intuitionistic fuzzy sets by centroid method

Abstract: In this paper, we propose a method to calculate the correlation coefficient of intuitionistic fuzzy sets by means of "centroid". This value obtained from our formula tell us not only the strength of relationship between the intuitionistic fuzzy sets, but also whether the intuitionistic fuzzy sets are positively or negatively related. This approach looks better than previous methods which only evaluate the strength of the relation. Furthermore, we extend the "centroid" method to interval-valued intuitionistic fuzzy sets. The value of the correlation coefficient between interval-valued intuitionistic fuzzy sets lies in the interval [-1, 1], as computed from our formula

correl of intuitionist fuzzi set by centroid method
 in thi paper , we propos a method to calcul the correl coeffici of intuitionist fuzzi set by mean of " centroid " . thi valu obtain from our formula tell us not onli the strength of relationship between the intuitionist fuzzi set , but also whether the intuitionist fuzzi set are posit or neg relat . thi approach look better than previou method which onli evalu the strength of the relat . furthermor , we extend the " centroid " method to interval-valu intuitionist fuzzi set . the valu of the correl coeffici between interval-valu intuitionist fuzzi set lie in the interv [ -1 , 1 ] , as comput from our formula


Analysis and efficient implementation of a linguistic fuzzy c-means

Abstract: The paper is concerned with a linguistic fuzzy c-means (FCM) algorithm with vectors of fuzzy numbers as inputs. This algorithm is based on the extension principle and the decomposition theorem. It turns out that using the extension principle to extend the capability of the standard membership update equation to deal with a linguistic vector has a huge computational complexity. In order to cope with this problem, an efficient method based on fuzzy arithmetic and optimization has been developed and analyzed. We also carefully examine and prove that the algorithm behaves in a way similar to the FCM in the degenerate linguistic case. Synthetic data sets and the iris data set have been used to illustrate the behavior of this linguistic version of the FCM

analysi and effici implement of a linguist fuzzi c-mean
 the paper is concern with a linguist fuzzi c-mean ( fcm ) algorithm with vector of fuzzi number as input . thi algorithm is base on the extens principl and the decomposit theorem . it turn out that use the extens principl to extend the capabl of the standard membership updat equat to deal with a linguist vector ha a huge comput complex . in order to cope with thi problem , an effici method base on fuzzi arithmet and optim ha been develop and analyz . we also care examin and prove that the algorithm behav in a way similar to the fcm in the degener linguist case . synthet data set and the iri data set have been use to illustr the behavior of thi linguist version of the fcm

fuzzy numbers
extension principle
decomposition theorem
linguistic vectors
computational complexity
fuzzy arithmetic
optimization
linguistic fuzzy c-means algorithm


Union outreach - a pilgrim's progress

Abstract: As the American labor movement continues on its path toward reorganization and rejuvenation, archivists are challenged to ensure that the organizational, political, and cultural changes labor unions are experiencing are fully documented. The article examines the need for labor archivists to reach out actively to unions and the problems they face in getting their message across, not only to union leadership but also to union members. Outreach by labor archivists is vital on three critical fronts: the need to secure union funding in support of labor archival programs; obtaining union cooperation in reviewing and amending obsolete deposit agreements; and coordinating efforts with unions to save the records of closing district and local union offices. Attempting to resolve these outstanding issues, labor archivists are pulled between two distinct institutional cultures (one academic in nature, the other enmeshed in a union bureaucracy) and often have their own labor archival programs compromised by the internal dynamics and politics inherent in administering large academic libraries and unions. If labor archivists are to be successful, they must find their collective voice within the labor movement and establish their relevancy to unions during a period of momentous change and restructuring. Moreover, archivists need to give greater thought to designing and implementing outreach programs that bridge the fundamental "disconnect" between union bureaucracies and the rank and file, and unions and the public

union outreach - a pilgrim 's progress
 as the american labor movement continu on it path toward reorgan and rejuven , archivist are challeng to ensur that the organiz , polit , and cultur chang labor union are experienc are fulli document . the articl examin the need for labor archivist to reach out activ to union and the problem they face in get their messag across , not onli to union leadership but also to union member . outreach by labor archivist is vital on three critic front : the need to secur union fund in support of labor archiv program ; obtain union cooper in review and amend obsolet deposit agreement ; and coordin effort with union to save the record of close district and local union offic . attempt to resolv these outstand issu , labor archivist are pull between two distinct institut cultur ( one academ in natur , the other enmesh in a union bureaucraci ) and often have their own labor archiv program compromis by the intern dynam and polit inher in administ larg academ librari and union . if labor archivist are to be success , they must find their collect voic within the labor movement and establish their relev to union dure a period of moment chang and restructur . moreov , archivist need to give greater thought to design and implement outreach program that bridg the fundament " disconnect " between union bureaucraci and the rank and file , and union and the public

American labor movement
archivists
cultural changes
labor unions
labor archivists
union leadership
union members
union funding
labor archival programs
union cooperation
obsolete deposit agreements
union offices
institutional cultures
union bureaucracy
internal dynamics
large academic libraries
collective voice
political changes


Integrating virtual and physical context to support knowledge workers

Abstract: The Kimura system augments and integrates independent tools into a pervasive computing system that monitors a user's interactions with the computer, an electronic whiteboard, and a variety of networked peripheral devices and data sources

integr virtual and physic context to support knowledg worker
 the kimura system augment and integr independ tool into a pervas comput system that monitor a user 's interact with the comput , an electron whiteboard , and a varieti of network peripher devic and data sourc

knowledge workers
Kimura system
pervasive computing
electronic whiteboard
networked peripheral devices
data sources


Java portability put to the test

Abstract: Sun Microsystems' recently launched Java Verification Program aims to enable companies to assess the cross-platform portability of applications written in Java, and to help software vendors ensure that their solutions can run in heterogenous J2EE application server environments

java portabl put to the test
 sun microsystem ' recent launch java verif program aim to enabl compani to assess the cross-platform portabl of applic written in java , and to help softwar vendor ensur that their solut can run in heterogen j2ee applic server environ

Sun Microsystems
Java Verification Program
cross-platform portability


An automated parallel image registration technique based on the correlation of wavelet features

Abstract: With the increasing importance of multiple multiplatform remote sensing missions, fast and automatic integration of digital data from disparate sources has become critical to the success of these endeavors. Our work utilizes maxima of wavelet coefficients to form the basic features of a correlation-based automatic registration algorithm. Our wavelet-based registration algorithm is tested successfully with data from the National Oceanic and Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR) and the Landsat Thematic Mapper (TM), which differ by translation and/or rotation. By the choice of high-frequency wavelet features, this method is similar to an edge-based correlation method, but by exploiting the multiresolution nature of a wavelet decomposition, our method achieves higher computational speeds for comparable accuracies. This algorithm has been implemented on a single-instruction multiple-data (SIMD) massively parallel computer, the MasPar MP-2, as well as on the CrayT3D, the Cray T3E, and a Beowulf cluster of Pentium workstations

an autom parallel imag registr techniqu base on the correl of wavelet featur
 with the increas import of multipl multiplatform remot sens mission , fast and automat integr of digit data from dispar sourc ha becom critic to the success of these endeavor . our work util maxima of wavelet coeffici to form the basic featur of a correlation-bas automat registr algorithm . our wavelet-bas registr algorithm is test success with data from the nation ocean and atmospher administr ( noaa ) advanc veri high resolut radiomet ( avhrr ) and the landsat themat mapper ( tm ) , which differ by translat and/or rotat . by the choic of high-frequ wavelet featur , thi method is similar to an edge-bas correl method , but by exploit the multiresolut natur of a wavelet decomposit , our method achiev higher comput speed for compar accuraci . thi algorithm ha been implement on a single-instruct multiple-data ( simd ) massiv parallel comput , the maspar mp-2 , as well as on the crayt3d , the cray t3e , and a beowulf cluster of pentium workstat

automated parallel image registration
correlation
wavelet feature
remote sensing
automatic registration algorithm
AVHRR
Landsat Thematic Mapper
wavelet decomposition
geophysical measurement technique
land surface
terrain mapping
optical imaging
microwave radiometry
image processing
SIMD massively parallel computing


The efficacy of electronic telecommunications in fostering interpersonal relationships

Abstract: The effectiveness of electronic telecommunications as a supplementary aid to instruction and as a communication link between students, and between students and instructors in fostering interpersonal relationships was explored in this study. More specifically, the impacts of e-mail, one of the most accessible, convenient, and easy to use computer-mediated communications, on student attitudes toward the instructor, group-mates, and other classmates were investigated. A posttest-only experimental design was adopted. In total, 68 prospective teachers enrolling in a "Computers in Education" course participated in the study for a whole semester. Results from the study provided substantial evidence supporting e-mail's beneficial effects on student attitudes toward the instructor and other classmates

the efficaci of electron telecommun in foster interperson relationship
 the effect of electron telecommun as a supplementari aid to instruct and as a commun link between student , and between student and instructor in foster interperson relationship wa explor in thi studi . more specif , the impact of e-mail , one of the most access , conveni , and easi to use computer-medi commun , on student attitud toward the instructor , group-mat , and other classmat were investig . a posttest-onli experiment design wa adopt . in total , 68 prospect teacher enrol in a " comput in educ " cours particip in the studi for a whole semest . result from the studi provid substanti evid support e-mail 's benefici effect on student attitud toward the instructor and other classmat

telecommunications
interpersonal relationships
e-mail
computer-mediated communications
student attitudes
student communication link
Computers in Education course
educational technology


Computer processing of data on mental impairments during the acute period of concussion

Abstract: The article presents results of computer processing of experimental information obtained from patients during the acute period of concussion. A number of computational procedures are described

comput process of data on mental impair dure the acut period of concuss
 the articl present result of comput process of experiment inform obtain from patient dure the acut period of concuss . a number of comput procedur are describ

computer processing
mental impairments
acute period of concussion
computational procedures


Robust fuzzy controlled photovoltaic power inverter with Taguchi method

Abstract: This paper presents design and implementation of a robust fuzzy controlled photovoltaic (PV) power inverter with Taguchi tuned scaling factors. To achieve fast transient response, small steady-state error and system robustness, a robust fuzzy controller is adopted, in which its input and output scaling factors are determined efficiently by using the Taguchi-tuning algorithm. The proposed system can operate in different modes, grid-connection mode and stand-alone mode, and can accommodate wide load variations. Simulation results and hardware measurements obtained from a prototype with a microcontroller (Intel 80196KC) are presented to verify the theoretical discussions, and its adaptivity, robustness and feasibility

robust fuzzi control photovolta power invert with taguchi method
 thi paper present design and implement of a robust fuzzi control photovolta ( pv ) power invert with taguchi tune scale factor . to achiev fast transient respons , small steady-st error and system robust , a robust fuzzi control is adopt , in which it input and output scale factor are determin effici by use the taguchi-tun algorithm . the propos system can oper in differ mode , grid-connect mode and stand-alon mode , and can accommod wide load variat . simul result and hardwar measur obtain from a prototyp with a microcontrol ( intel 80196kc ) are present to verifi the theoret discuss , and it adapt , robust and feasibl

robust fuzzy controlled photovoltaic power inverter


A Web-accessible database of characteristics of the 1,945 basic Japanese kanji

Abstract: In 1981, the Japanese government published a list of the 1,945 basic Japanese kanji (Jooyoo Kanji-hyo), including specifications of pronunciation. This list was established as the standard for kanji usage in print. The database for 1,945 basic Japanese kanji provides 30 cells that explain in detail the various characteristics of kanji. Means, standard deviations, distributions, and information related to previous research concerning these kanji are provided in this paper. The database is saved as a Microsoft Excel 2000 file for Windows. This kanji database is accessible on the Web site of the Oxford Text Archive, Oxford University (http://ota.ahds.ac.uk). Using this database, researchers and educators will be able to conduct planned experiments and organize classroom instruction on the basis of the known characteristics of selected kanji

a web-access databas of characterist of the 1,945 basic japanes kanji
 in 1981 , the japanes govern publish a list of the 1,945 basic japanes kanji ( jooyoo kanji-hyo ) , includ specif of pronunci . thi list wa establish as the standard for kanji usag in print . the databas for 1,945 basic japanes kanji provid 30 cell that explain in detail the variou characterist of kanji . mean , standard deviat , distribut , and inform relat to previou research concern these kanji are provid in thi paper . the databas is save as a microsoft excel 2000 file for window . thi kanji databas is access on the web site of the oxford text archiv , oxford univers ( http://ota.ahds.ac.uk ) . use thi databas , research and educ will be abl to conduct plan experi and organ classroom instruct on the basi of the known characterist of select kanji

Web-accessible database
basic Japanese kanji
Jooyoo Kanji-hyo
pronunciation
cells
means
standard deviations
distributions
Microsoft Excel 2000 file for Windows
classroom instruction
kanji usage print
Oxford Text Archive Web site


How should team captains order golfers on the final day of the Ryder Cup matches?

Abstract: I used game theory to examine how team captains should select their slates for the final day of the Ryder Cup matches. Under the assumption that golfers have different abilities and are not influenced by pressure or momentum, I found that drawing names from a hat will do no worse than any other strategy

how should team captain order golfer on the final day of the ryder cup match ?
 i use game theori to examin how team captain should select their slate for the final day of the ryder cup match . under the assumpt that golfer have differ abil and are not influenc by pressur or momentum , i found that draw name from a hat will do no wors than ani other strategi

game theory
slate
golf
golfer ordering
Ryder Cup final day


Firewall card shields data

Abstract: The SlotShield 3000 firewall on a PCI card saves power and space, but might not offer enough security for large networks

firewal card shield data
 the slotshield 3000 firewal on a pci card save power and space , but might not offer enough secur for larg network

SlotShield 3000 firewall
PCI card
security
large networks


Modeling daily realized futures volatility with singular spectrum analysis

Abstract: Using singular spectrum analysis (SSA), we model the realized volatility and logarithmic standard deviations of two important futures return series. The realized volatility and logarithmic standard deviations are constructed following the methodology of Andersen et al. [J. Am. Stat. Ass. 96 (2001) 42-55] using intra-day transaction data. We find that SSA decomposes the volatility series quite well and effectively captures both the market trend (accounting for about 34-38% of the total variance in the series) and, more importantly, a number of underlying market periodicities. Reliable identification of any periodicities is extremely important for options pricing and risk management and we believe that SSA can be a useful addition to the financial practitioners' toolbox

model daili realiz futur volatil with singular spectrum analysi
 use singular spectrum analysi ( ssa ) , we model the realiz volatil and logarithm standard deviat of two import futur return seri . the realiz volatil and logarithm standard deviat are construct follow the methodolog of andersen et al . [ j. am . stat . ass . 96 ( 2001 ) 42 - 55 ] use intra-day transact data . we find that ssa decompos the volatil seri quit well and effect captur both the market trend ( account for about 34 - 38 % of the total varianc in the seri ) and , more importantli , a number of underli market period . reliabl identif of ani period is extrem import for option price and risk manag and we believ that ssa can be a use addit to the financi practition ' toolbox

daily realized futures volatility
singular spectrum analysis
SSA
logarithmic standard deviations
return series
market trend
market periodicities
options pricing
risk management
financial practitioners
intraday transaction data
econophysics
asset return


Optimization of the characteristics of computational processes in scalable resources

Abstract: The scalableness of resources is taken to mean the possibility of the prior change in the obtained dynamic characteristics of computational processes for a certain basic set of processors and the communication medium in an effort to optimize the dynamics of software applications. A method is put forward for the generation of optimal strategies-a set of the versions of the fulfillment of programs on the basis of a vector criterion. The method is urgent for the effective use of resources of computational clusters and metacomputational media and also for dynamic control of processes in real time on the basis of the static scaling

optim of the characterist of comput process in scalabl resourc
 the scalabl of resourc is taken to mean the possibl of the prior chang in the obtain dynam characterist of comput process for a certain basic set of processor and the commun medium in an effort to optim the dynam of softwar applic . a method is put forward for the gener of optim strategies-a set of the version of the fulfil of program on the basi of a vector criterion . the method is urgent for the effect use of resourc of comput cluster and metacomput media and also for dynam control of process in real time on the basi of the static scale

computational processes
scalable resources
dynamic characteristics
communication medium
software applications
vector criterion
computational clusters
metacomputational media
dynamic control
static scaling
optimal strategies


Post-haste. 100th robotic containerization system installed in US mail sorting center

Abstract: Spot welding, machine tending, material handling, picking, packing, painting, palletizing, assembly...the list of tasks being performed by ABB robots keeps on growing. Adding to this portfolio is a new robot containerization system (RCS) that ABB developed specifically for the United States Postal Service (USPS). The RCS has brought new levels of speed, accuracy, efficiency and productivity to the process of sorting and containerizing mail and packages. Recently, the 100th ABB RCS was installed at the USPS processing and distribution center in Columbus, Ohio

post-hast . 100th robot container system instal in us mail sort center
 spot weld , machin tend , materi handl , pick , pack , paint , pallet , assembl ... the list of task be perform by abb robot keep on grow . ad to thi portfolio is a new robot container system ( rc ) that abb develop specif for the unit state postal servic ( usp ) . the rc ha brought new level of speed , accuraci , effici and product to the process of sort and container mail and packag . recent , the 100th abb rc wa instal at the usp process and distribut center in columbu , ohio

robotic containerization system
mail sorting center
mail sorting
ABB robots
United States Postal Service
USA
packages sorting