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IEEE General Meeting Power& Energy Society

作者： O.A. Mohammed S.C. Ganu S. Liu Department of Electrical and Computer Engineering Energy System Laboratory Florida International University Miami FL USA Department of Eleclrical and Computer Engineering Energy System Laboratory Florida International University USA

This paper investigates the numerical results relating to magnetostrictive effects in an electrical steel sample. This is based upon the magneto-mechanical coupling. The magnetic field causes elastic deformation and mechanical stress changes the magnetization curve and the hysteresis loop. As the applied stress is increased, material permeability increases. Pre-stressed magnetic material may show the promise of increased power density in the manufacturing of electric machinery.

关键词： Magnetic analysis Testing Magnetostriction Machinery Magnetoelasticity Stress Magnetic materials Steel Couplings Magnetic fields

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Architecture of the virtual training system for buoyancy control 03

Architecture of the virtual training system for buoyancy con...

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9th EUROGRAPHICS Workshop on Virtual Environments, EGVE 2003

作者： Korošec, Dean Slavinec, Mitja Bernad, Dani Kolarič, Primož Prnaver, Katja University of Maribor Faculty of Electrical Engineering and Computer Science System Software Laboratory Slovenia University of Maribor Faculty of Education Department of Physics Slovenia Regional Development Agency Mura Murska Sobota Slovenia

ISBN: (纸本)1581136862

In this paper we present the structure of the simulator which would allow diving beginners to experience the effect of buoyancy control mechanisms before actually entering the *** believe such training would be less stressful and safer for all participants, but it should also reduce the time in water needed to manage basic practical diving skills. Central design requirements for the system were: realistic modelling of diving physics, various options of man-machine interface and possibility of immersion. With future studies we plan to clarify to what extent the immersive VR interfaces are able to further improve the diving training experience. © 2003 The Eurographics Association.

关键词： E-learning

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Dynamic scheduling issues in SMT architectures

Dynamic scheduling issues in SMT architectures

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International Parallel and Distributed Processing Symposium, IPDPS 2003

作者： Shin, Chulho Lee, Seong-Won Gaudiot, Jean-Luc System Design Technology Laboratory Samsung Electronics Corporation Korea Republic of Dept. of Electrical Engineering - Systems University of Southern California United States Dept. of Electrical Engineering and Computer Science University of California Irvine United States

ISBN: (纸本)0769519261

Simultaneous multithreading (SMT) attempts to attain higher processor utilization by allowing instructions from multiple independent threads to coexist in a processor and compete for shared resources. Previous studies have shown, however, that its throughput may be limited by the number of threads. A reason is that a fixed thread scheduling policy cannot be optimal for the varying mixes of threads it may face in an SMT processor. Our adaptive dynamic thread scheduling (ADTS) was previously proposed to achieve higher utilization by allowing a detector thread to make use of wasted pipeline slots with nominal hardware and software costs. The detector thread adaptively switches between various fetch policies. Our previous study showed that a single fixed thread scheduling policy presents much room (some 30%) for improvement compared to an oracle-scheduled case. In this paper, we take a closer look at ADTS. We implemented the functional model of the ADTS and its software architecture to evaluate various heuristics for determining a better fetch policy for a next scheduling quantum. We report that performance could be improved by as much as 25%. © 2003 IEEE.

关键词： Scheduling

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Adaptive background learning for vehicle detection and spatio temporal tracking 4

Adaptive background learning for vehicle detection and spati...

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Joint Conference of the 4th International Conference on Information, Communications and Signal Processing and 4th Pacific-Rim Conference on Multimedia, ICICS-PCM 2003

作者： Zhang, Chengcui Chen, Shu-Ching Shyu, Mei-Ling Peeta, Srinivas Distributed Multimedia Information System Laboratory School of Computer Science Florida International University MiamiFL33199 United States Department of Electrical and Computer Engineering University of Miami Coral GablesFL33124 United States School of Civil Engineering Purdue University West LafayetteIN47907 United States

ISBN: (纸本)0780381858

Traffic video analysis can provide a wide range of useful information such as vehicle identification, traffic flow, to traffic planners. In this paper, a framework is proposed to analyze the traffic video sequence using unsupervised vehicle detection and spatio-temporal tracking that includes an image/video segmentation method, a background learning/subtraction method and an object tracking algorithm. A real-life traffic video sequence from a road intersection is used in our study and the experimental results show that our proposed unsupervised framework is effective in vehicle tracking for complex traffic situations. © 2003 IEEE.

关键词： Tracking (position)

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Mining high-level user concepts with multiple instance learning and relevance feedback for content-based image retrieval

Mining high-level user concepts with multiple instance learn...

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International Workshop on Mining Complex Data: Multimedia Data Mining, MDM/KDD at KDD 2002 and International Workshop on Knowledge Discovery from Multimedia and Complex Data, KDMCD at PAKDD 2002

作者： Huang, Xin Chen, Shu-Ching Shyu, Mei-Ling Zhang, Chengcui Distributed Multimedia Information System Laboratory School of Computer Science Florida International University MiamiFL33199 United States Department of Electrical and Computer Engineering University of Miami Coral GablesFL33124 United States

ISBN: (纸本)3540203052

Understanding and learning the subjective aspect of humans in Content-Based Image Retrieval has been an active research field during the past few years. However, how to effectively discover users’ concept patterns when there are multiple visual features existing in the retrieval system still remains a big issue. In this book chapter, we propose a multimedia data mining framework that incorporates Multiple Instance Learning into the user relevance feedback in a seamless way to discover the concept patterns of users, especially where the user’s most interested region and how to map the local feature vector of that region to the high-level concept pattern of users. This underlying mapping can be progressively discovered through the feedback and learning procedure. The role the user plays in the retrieval system is to guide the system mining process to his/her own focus of attention. The retrieval performance is tested to show the feasibility and effectiveness of the proposed multimedia data mining framework. © Springer-Verlag Berlin Heidelberg 2003.

关键词： Content based retrieval

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Web-based network device management using SNMP servlet

Web-based network device management using SNMP servlet

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National Conference on Telecommunication Technology (NCTT)

作者： M.J. Hossen A.R. Ramli M.K. Abdullah Faculty of Engineering Department of Computer and Communication System Engineering Multimedia and Imaging System Laboratory Universiti Putra Malaysia Selangor Darul Ehsan Malaysia

As the complexity and size of data networks increases, network management faces a great challenge. Fortunately, the emergence of the SNMP (simple network management protocol) management framework and Web technology release network managers from the difficult circumstance. The paper explains the function and design of a prototype network device management station based on leading-edge Java servlet technologies and the World Wide Web. Web technologies bring valuable cost improvements, flexibility, and security enhancement to configuration management and performance management. The paper also discusses the functional requirements of Web-based network management and proposes the architecture for Web-based network configuration management, which is capable of controlling and monitoring remotely the configuration information of enterprise networks.

关键词： Disaster management Technology management Protocols Prototypes Java Paper technology Web sites Costs Information security Remote monitoring

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MMM: A stochastic mechanism for image database queries 5

MMM: A stochastic mechanism for image database queries

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5th IEEE International Symposium on Multimedia Software engineering, ISMSE 2003

作者： Shyu, M.-L. Chen, S.-C. Chen, M. Zhang, C. Shu, Chi-Min Department of Electrical and Computer Engineering University of Miami Coral GablesFL33124 United States Distributed Multimedia Information System Laboratory School of Computer Science Florida International University MiamiFL33199 United States Department of Environmental and Safety Engineering National Yunlin University of Science and Technology Yunlin Taiwan

ISBN: (纸本)0769520316

We present a mechanism called the Markov model mediator (MMM) to facilitate the effective retrieval for content-based image retrieval (CBIR). Different from the common methods in content-based image retrieval, our stochastic mechanism not only takes into consideration the low-level image content features, but also learns high-level concepts from a set of training data, such as access frequencies and access patterns of the images. The advantage of our proposed mechanism is that it exploits the structured description of visual contents as well as the relative affinity measurements among the images. Consequently, it provides the capability to bridge the gap between the low-level features and high-level concepts. Our experimental results demonstrate that the MMM mechanism can effectively assist in retrieving more accurate results for user queries. © 2003 IEEE.

关键词： Stochastic systems

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Validation of XML document updates based on XML schema in XML databases

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2003年 2736卷 98-108页

作者： Kim, Sang-Kyun Lee, Myungcheol Lee, Kyu-Chul Dept. of Computer Engineering Chungnam National University Korea Republic of Computer System Department Computer and Software Research Laboratory Electronics and Telecommunications Research Institute Korea Republic of

We study the validation of XML documents when they are updated in XML databases. An XML document can be verified by checking against an XML Schema, which contains structure and type information of XML documents. However, most of XML database systems just validate the whole XML document, but can not validate parts of it. If updates are very frequent, then validating the whole XML document will cause serious performance degradation. Furthermore, rollback should be performed if the updates result in an invalid document, because the updated document is usually validated after the update operation executed. In this paper, we propose an immediate and partial validation mechanism for solving these two problems, i.e the validity of an update operation is checked immediately before the actual update is applied to the database whether it causes invalidity, and validation is performed only on the updated parts of the XML document in the database. Consequently, XML database systems can maintain valid XML documents at any time. We already proposed an immediate and partial validation mechanism based on DTD[6], and we extend the mechanism based on XML Schema in this paper. © Springer-Verlag Berlin Heidelberg 2003.

关键词： XML

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An Automated Method for Neuronal Spike Source Identification

An Automated Method for Neuronal Spike Source Identification

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International Joint Conference on Neural Networks 2003

作者： Santiago, Roberto A. McNames, James Burchiel, Kim Lendaris, George G. NW Compl. Intelligence Laboratory System Science Portland State University Portland OR United States Biomed. Signal Processing Laboratory Electrical and Computer Engineering Portland State University Portland OR United States Department of Neurological Surgery Oregon Health Sciences University Portland OR United States

Analysis of microelectrode recordings (MER) of extracellular neuronal activity has gained increasing interest due to potential improvements to surgical techniques involving ablation or placement of deep brain stimulators, as is common in the treatment of Parkinson's disease. Critical to these procedures is the identification of different brain structures such as the globus pallidus internus (GPI). Evidence suggests that the spike trains from individual neurons contain enough information to identify the brain structure in which they are located. For the work reported here, spike train data gathered during surgical procedure from multiple patients is used. Using a moving window sampling approach, a novel feature extraction method for spike trains was developed. This method is then used in combination with a support vector classification algorithm. Results strongly indicate that the sampling methods reported here are able to extract the necessary information for highly accurate spike source identification.

关键词： Neurosurgery

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DCM/Diff.D: A threshold-less and dynamic decision making receiver design for improved transmission performance

DCM/Diff.D: A threshold-less and dynamic decision making rec...

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Asia-Pacific Conference on Communications

作者： N. Abbas M.K. Abdullah A.F. Abas Facutly of Engineenng UPM 43400 Serdang Computer and Communication System Engineering Department Photonics Laboratory Selangor Malaysia

The simulation results and analysis of a novel transmission technique namely double carrier modulation/differential detection are presented, we show how the differential detection technique improves the system performance significantly, we also demonstrate that this technique overcomes the problems associated with voltage threshold in conventional systems, and how it suggest the possibility to double up the conventional long distance without amplifiers with a BER of as good as 10/sup -13/ at 2.5 Gbps over 150 Km distance with 0 dBm transmit power. The new scheme also shows a much slower degradation with distance than that of conventional IM/DD system.

关键词： Decision making Optical noise Photodetectors Optical receivers Threshold voltage Bit error rate Degradation Phase detection Photonics Laboratories

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