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International Conference on Probabilistic Methods Applied to Power systems (PMAPS)

作者： G. Papaefthymiou A. Tsanakas P.H. Schavemaker L. van der Sluis Electrical Power System Laboratory EPS Faculty of Electrical Engineering Mathematics & Computer Science Delft University of Technnology Delft Netherlands Center for Quantitative Finance Imperial College London London UK

In this paper a design methodology of 'distributed' energy systems is presented. These are defined as energy systems with unregulated distributed generators connected to the lower voltage levels. The cornerstone in their design is the steady-state analysis of distribution systems under uncertainty in energy in energy generation and consumption. Based on this definition, the structure of a system-design tool is proposed. The system is described by the steady-state model, while all different types of distributed generators (dispatchable or nondispatchable technology concepts) are treated in a unifying manner through probabilistic modelling. The modelling of the interdependence between the random input variables is treated by introducing the concepts of comonotonicity, countermonotonicity and independence between distributed generations and distributed consumptions as stochastic bounds describing extreme statistical dependence between the input random variables.

关键词： Power generation Distributed control Power systems Load flow analysis Power system reliability Design methodology Voltage Steady-state Random variables Risk analysis

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Time partitioning framework for fully reconfigurable systems

Time partitioning framework for fully reconfigurable systems

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International Conference on Microelectronics, ICM

作者： B. Ouni A. Mtibaa M. Abid Laboratory of Electronics and Microelectronics University of Sciences of Monastir Tunisia Lab. of Electron. & Microelectron. Univ. of Sci. of Monastir Tunisia Computer Electronic and Smart system Engineering National Engineering School of Sfax (ENIS) Tunisia

The SRAM technologies allow the FPGA device to be reconfigured by loading new configuration data. Real time reconfiguration can be performed by loading each configuration data then reinitializing the device. The entire process (loading and reinitializing) requires less than some milliseconds, which can be used to fit a large application onto the FPGA device by partitioning the application over time. Our first aim in this paper consists of introducing a design flow for reconfigurable systems, the second aim consists of introducing a time partitioning algorithm that divides the input task graph model to an optimal number of partitions and puts each task in the appropriate partition so that the latency of the input task graph is optimal.

关键词： Field programmable gate arrays Data engineering Delay Algorithm design and analysis Partitioning algorithms Application software Costs Hardware Scheduling Optimal control

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An artificial immune system strategy for robust chemical spectra classification via distributed heterogeneous sensors

An artificial immune system strategy for robust chemical spe...

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Congress on Evolutionary Computation

作者： M.A. Esslinger G.B. Lamont H.S. Abdel-Aty-Zohdy R.L. Ewing Department of Electrical and Computer Engineering Air Force Institute of Technology Dayton OH USA Microelectronics System Design Laboratory Oakland University Rochester MI Information Directorate Wright-Patterson AFB Air Force Research Laboratory Dayton Ohio USA

The timely detection and classification of biological agents in a hostile environment is critical for increasing protection in critical areas. This paper proposes a strategy for identifying biological agents via distributed sensors with an artificial immune system (AIS). The proposed system is composed of networked sensors and nodes, communicating via wireless or wired connections. Measurements are continually taken via dispersed redundant sensors strategically placed in threat areas. These sensors continually measure and categorize air or liquid samples, alerting surrounding nodes when possible biological agents are detected. Detection is based upon the biological immune system (BIS) model of antigens and antibodies, and alerts are generated when a measured sample is determined to be a valid biological agent (antigen). Biological agent signatures (antibodies) are continually distributed throughout the system to adapt to changes in the environment or to new antigens.

关键词： Chemical sensors Artificial immune systems Robustness Sensor systems Biosensors Chemical and biological sensors Wireless sensor networks Protection Wireless communication Area measurement

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Three-dimensional registration and analysis for brain SPECT images

Three-dimensional registration and analysis for brain SPECT ...

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IEEE Symposium on Nuclear Science (NSS/MIC)

作者： Yuan-Lin Liao Yung-Nien Sun Nan-Tsing Chiu Visual System Laboratory Department of Computer Science and Information Engineering National Cheng Kung University Hospital Tainan County Taiwan Department of Nuclear Medicine National Cheng Kung University Hospital Tainan County Taiwan

ISBN: (纸本)0780387007

Tc-99m HMPAO is a typical tracer used in the analysis of cerebral blood flow. Single photon emission computed tomography (SPECT) brain imaging utilizing Tc-99m HMPAO is thus a popular method to assess brain function. An image analysis system for SPECT images that performs a series of image processing procedures including three-dimensional (3-D) image registration, brain extraction, and intensity normalization, is presented here to map all the 3-D brain data to the same space. Afterward, the aligned images undertake a standard statistical analysis, the paired t test, to detect the areas that have significant deviations between the two sets of images. The statistical t map is then represented with a color plot for each brain slice to indicate the activation foci. The registration results are evaluated on the designed phantom images, the acquired clinical images, and by visual inspection. The experimental studies reveal that the subvoxel accuracy is achieved and the consistency is also maintained. Besides, the resulting statistic maps are found very helpful to doctors for lesion evaluation and localization in the clinical diagnosis of schizophrenic patients

关键词： Image analysis Brain Blood flow Single photon emission computed tomography Image color analysis Image processing Image registration Data mining Statistical analysis Testing

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Challenge of human factor influence for car safety

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Neural Network World 2004年第1期14卷 37-47页

作者： Novák, Mirko Votruba, Zdenëk Jt. Laboratory of System Reliability Faculty of Transportation Sciences Czech Technical University Prague Institute of Computer Science Acad. of Sci. of the Czech Republic Prague Department of Control Engineering Faculty of Transportation Sciences Czech Technical University Prague

The challenge of human factor influence for analyzing the reliability and safety of car transportation is discussed. An analysis of the density and the kind of use among the drivers in different regions and seasons of the year is made. The possibilities to detect the driver falling into a relaxant, somnolent or micro-sleep stage by the use of suitable combination of secondary factors are investigated. The operation of the driver in the moving car is an example of very complicated interaction between several very heterogeneous systems.

关键词： Motor transportation

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A data mining framework for building a Web-page recommender system

A data mining framework for building a Web-page recommender ...

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IEEE International Conference on Information Reuse and Integration (IRI)

作者： C. Haruechaiyasak M.-L. Shyu S.-C. Chen Information Research and Development Division (RDI) National Electronics and Computer Technology Center Klong Luang Pathum Thani Thailand Department of Electrical and Computer Engineering University of Miami Coral Gables FL USA Distributed Multimedia Information System Laboratory School of Computer Science Florida International University Miami FL USA

In this paper, we propose a new framework based on data mining algorithms for building a Web-page recommender system. A recommender system is an intermediary program (or an agent) with a user interface that automatically and intelligently generates a list of information, which suits an individual's needs. Two information filtering methods for providing the recommended information are considered: (1) by analyzing the information content, i.e., content-based filtering, and (2) by referencing other user access behaviors, i.e., collaborative filtering. By using the data mining algorithms, the information filtering processes can be performed prior to the actual recommending process. As a result, the system response time could be improved and thus, making the framework scalable.

关键词： Data mining Recommender systems Information filtering Information filters User interfaces Intelligent agent Information analysis Collaboration Filtering algorithms Delay

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Deploying traffic information service applications in any type of cellular networks

Deploying traffic information service applications in any ty...

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Mediterranean Electrotechnical Conference (MELECON)

作者： T.S. Stamoulakatos M.S. Koumanos S.D. Goutzioupas E.D. Sykas Telecommunications Laboratory Department of Electrical and Computer Engineering National and Technical University of Athens Athens Greece Department of Bussiness Solutions OTEnet Athens Greece Department of Telecom and Business System Support Intracom S.A. Athens Greece

Location is a strategic asset of cellular network providers. Location based mobile services are a new type of wireless communication service that exploit the knowledge of the mobile terminal's location, enabling many innovative and useful applications for the mobile terminal users. In this study, we present an architecture and the corresponding application for supporting the transmission of road traffic information to mobile users. A detailed investigation of the signaling load for any type of cellular network (GSM, GPRS, UMTS) takes place trying to utilize the position information that is recorded in the cellular network provider databases for resource management or billing purposes. Robust and flexible services can be accomplished by transferring LBS applications to IP networks by using the active network technology.

关键词： Telecommunication traffic Land mobile radio cellular systems Wireless communication Roads GSM Ground penetrating radar 3G mobile communication Databases Resource management Robustness

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A novel program-erasable high-k AlN capacitor with memory function

A novel program-erasable high-k AlN capacitor with memory fu...

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Non-Volatile Memory Technology Symposium

作者： A. Chin C.H. Lai B.F. Hung C.F. Cheng S.P. McAlister Chunxiang Zhu Ming-Fu Li Dim-Lee Kwong Department of Electronics Engineering Nano Science Technology Center Univ System of Taiwan National Chiao Tung University Hsinchu Taiwan Silicon Nano Devices Laboratory Department of Electrical and Computer Engineering National University of Singapore Singapore Singapore Institute for Microstructural Sciences National Research Council Canada Ottawa Canada Department of Electrical & Computer Engineering University of Technology Austin TX USA

We demonstrate, for the first time, a novel high-k AlN capacitor that is program-erasable at voltages of +4 or -4 V and that has good retention for 1T1C memory. These features are not shown by Al/sub 2/O/sub 3/, or other capacitors that use only a single high-k dielectric layer. Good data retention is shown with a threshold shift of only 0.06V after /spl plusmn/4V program/erase for 10/sup 4/sec.

关键词： High K dielectric materials High-K gate dielectrics Capacitors Nonvolatile memory Random access memory Threshold voltage Electron traps MONOS devices SONOS devices CMOS technology

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Affinity-based similarity measure for Web document clustering

Affinity-based similarity measure for Web document clusterin...

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IEEE International Conference on Information Reuse and Integration (IRI)

作者： M.-L. Shyu S.-C. Chen M. Chen S.H. Rubin Department of Electrical and Computer Engineering University of Miami Coral Gables FL USA Distributed Multimedia Information System Laboratory School of Computer Science Florida International University Miami FL USA Center SSC San Diego SPA WAR Systems Center San Diego CA USA

Compared to the regular documents, the major distinguishing characteristics of the Web documents are the dynamic hyper-structure. Thus, in addition to terms or keywords for regular document clustering, Web document clustering can incorporate some dynamic information such as the hyperlinks and the access patterns extracted from the user query logs. In this paper, we extend the concept of document clustering into Web document clustering by introducing the strategy of affinity-based similarity measure, which utilizes the user access patterns in determining the similarities among Web documents via a probabilistic model. Several comparison experiments are conducted using a real data set and the experimental results demonstrate that the proposed similarity measure outperforms the cosine coefficient and the Euclidean distance method under different document clustering algorithms.

关键词： Clustering algorithms World Wide Web Uniform resource locators Particle measurements Multimedia systems Distributed computing Military computing systems engineering and theory Information systems Laboratories

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Detection of sub-Terahertz and Terahertz radiation by plasma waves in silicon field effect transistors

Detection of sub-Terahertz and Terahertz radiation by plasma...

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IEEE Sensors 2004

作者： Teppe, F. Meziani, Y. Dyakonova, N. Lusakowski, J. Knap, W. Bœuf, F. Skotnicki, T. Maude, D. Rumyantsev, S. Shur, M.S. Computer and System Engineering Department Rensselaer Polytechnic Institute Troy NY 12180-3590 United States Groupe d'Etude des Semi-Conducteurs UMR 5650 CNRS-Université Montpellier 2 Montpellier France ST Microelectronics BP 16 38921 Crolles France Grenoble High Magnetic Field Laboratory CNRS-MPI 38 450 Grenoble France Ioffe Institute of Russian Academy of Sciences 194021 St-Petersburg Russia

We report on the first experiments on detection of the sub-THz and THz (120 GHz and 3 THZ) radiation of Si FETs with nanometer and submicron gate lengths at 300K. The observed photo-response is in agreement with the predictions of Dyakonov-Shur theory. The plasma wave parameters deduced from the experiments allow us to predict the non resonant and resonant detection in THz range by nanometer size silicon devices. © 2004 IEEE.

关键词： Plasma waves

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