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IEEE International Symposium on Electromagnetic Compatibility (EMC)

作者： D. Berg M. Tanaka Y. Ji X. Ye J.L. Drewniak T.H. Hubing R.E. Dussrof T.P. Van Doren Electromagnetic Compatibility Laboratory Department of Electrical and Computer Engineering University of Missouri Rolla Rolla MO USA Faculty of Engineering and Resource Science Akita University Akita Japan

PCB traces routed near board edges and carrying high-speed signals are considered to contribute to EMI problems. Consequently, design maxims state that traces that might have intentional or unintentional high frequency components on them be kept away from board edges. This costs valuable surface area as boards become more densely designed. Further, design maxims concerning traces near board edges are not well quantified. The increase in EMI as a trace is routed increasingly closer to the PCB edge has been studied experimentally and with numerical modeling.

关键词： Finite difference methods Time domain analysis Message-oriented middleware Electromagnetic interference Impedance Frequency Magnetic fields Inductance Numerical models Signal design

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Agglomerative vs. tree-based clustering for the definition of multilingual set of triphones

Agglomerative vs. tree-based clustering for the definition o...

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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： B. Imperl Z. Kacic B. Horvat A. Zgank Laboratory for Digital Signal Processing Faculty of Electrical Engineering and Computer Science University of Maribor Maribor Slovenia Univerza v Mariboru Maribor SI

The paper addresses the problem of multilingual acoustic modelling for the design of multilingual speech recognisers. Two different approaches for the definition of multilingual set of triphones (bottom-up and a top-down) are investigated. A new clustering algorithm for the definition of multilingual set of triphones is proposed. The agglomerative clustering algorithm (bottom-up) is based on a definition of a distance measure for triphones defined as a weighted sum of explicit estimates of the context similarity on a monophone level. The monophone similarity estimation method is based on the algorithm of Houtgast. The second type of system uses tree-based clustering (top-down) with a common decision tree. The experiments were based on the SpeechDat II databases (Slovenian, Spanish and German 1000 FDB SpeechDat II). Experiments have shown that the use of the agglomerative clustering algorithm results in a significant reduction of the number of triphones with minor degradation of word accuracy.

关键词： Context modeling Clustering algorithms Speech recognition Signal processing algorithms Decision trees Degradation Laboratories Digital signal processing computer science Databases

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Wireless optical transmissions with white colored LED for wireless home links

Wireless optical transmissions with white colored LED for wi...

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IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

作者： Y. Tanaka S. Haruyama M. Nakagawa Department of Electrical Engineering Faculty of Science and Technology Keio University Yokohama Kanagawa Japan Advanced Telecommunication Laboratory Sony Computer Science Laboratories Inc. Shinagawa Tokyo Japan

We propose a wireless optical communication system with white colored LEDs for a wireless home link (WHL). The white colored LEDs have a high power output and are regarded as lamps for the next generation. In the proposed system, this device is used for a wireless home link. The proposed system is suitable for private networks such as consumer communication networks. From numerical and simulation results, it is confirmed that the proposed system is available and the problems to be solved are made clear.

关键词： Light emitting diodes Optical transmitters Optical fiber communication Radio transmitters High speed optical techniques Optical receivers Wireless communication Optical mixing Laboratories Optical devices

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Compact Compton Scattering X-Ray Source for Advanced Cancer Research

Compact Compton Scattering X-Ray Source for Advanced Cancer ...

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2000 25～(th) International Conference on Infrared and Millimeter Waves Conference Digest

作者： N.C.Luhmann Jr. J.E.Boggan G.Caryotakis F.V.Hartemann J.P.Heritage E.Landahl D.L.Matthews A.Norman T.Solberg A.Vlieks Department of Applied Science University of CaliforniaDavis Electrical and Computer EngineeringUniversity of CaliforniaDavis Department of Neurosurgery University of CaliforniaDavis Stanford Linear Accelerator Center Stanford University Lawrence Livermore National Laboratory University of California Radiation Oncology and Biomedical Physics UCLA

The combination of a high repetition rate(1 kHz),high power (TW-class,100fsec) Ti:sapphire laser and a high gradi-ent (≌75 MeV/m) . high brightness (ε≌3π-mm-mrad) photoinjector/electron ac-celerator(15-100 MeV,≌lnC per pulse)is predicted to produce high intensity (≌10 photons/sec),monoenergetic (<10% BW)X-rays tunable from 10 to 100keV .The small source size (a≌10μm)permits significant magnification (up to8x)to be employed in imaging applica-tions.

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Compact Compton scattering X-ray source for advanced cancer research

Compact Compton scattering X-ray source for advanced cancer ...

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International Conference on Infrared and Millimeter Waves

作者： N.C. Luhmann J.E. Boggan G. Caryotakis F.V. Hartemann J.P. Heritage E. Landadl D.L. Matthews A. Norman T. Solberg A. Vlieks Electrical and Computer Engineering University of California Davis USA Department of Neurosurgery University of California Davis USA Stanford Linear Accelerator Center University of Stanford USA Department of Applied Science University of California Davis USA Lawrence Livermore National Laboratory University of California USA Radiation Oncology and Biomedical Physics University of California Los Angeles USA

The combination of a high repetition rate (1 kHz), high power (TW-class, 100 fs) Ti:sapphire laser and a high gradient (/spl cong/75 MeV/m), high brightness (/spl epsi//spl cong/ 3 /spl pi/-mm-mrad) photoinjector/electron accelerator (15-100 MeV, /spl cong/1 nC per pulse) is predicted to produce high intensity (/spl cong/10/sup 11/ photons/sec), monoenergetic (<10% BW) X-rays tunable from 10 to 100 keV. The small source size (a/spl cong/10 /spl mu/m) permits significant magnification (up to 8/spl times/) to be employed in imaging applications.

关键词： X-ray scattering Cancer X-ray lasers Electromagnetic scattering Particle scattering Power lasers Brightness Electron accelerators Optical pulses X-ray imaging

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Decomposition of a fuzzy controller based on the inference break-up method

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Intelligent Data Analysis 1999年第2期3卷 127-137页

作者： Golob, Marjan Laboratory for Process Automation University of Maribor Faculty of Electrical Engineering and Computer Science Smetanova 17 2000 Maribor Slovenia

A concept called the decomposition of multivariable control rules is presented. Fuzzy control is the application of the compositional rule of inference and it is shown how the inference of the rule base with complex rules can be reduced to the inference of a number of rule bases with simple rules. A fuzzy logic based controller is applied to a simple magnetic suspension system. The controller has proportional, integral and derivative separate parts which are tuned independently. This means that all parts have their own rule bases. By testing it was found that the fuzzy PID controller gives better performance over a typical operational range then a traditional linear PID controller. The magnetic suspension system and the contact-less optical position measurement system have been developed and applied for the comparative analysis of the real-time conventional PID control and the fuzzy control. © 1999 Elsevier science B.V. All rights reserved.

关键词： Fuzzy control

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The influence of class discretization to attribute hierarchy of decision trees

The influence of class discretization to attribute hierarchy...

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15th Congress on Medical Informatics Europe, MIE 1999

作者： Babič, Špela Hleb Kokol, Peter Zorman, Milan Podgorelec, Vili Faculty of Electrical Engineering and Computer Science University of Maribor Laboratory for System Design Smetanova 17 2000 Maribor Slovenia

ISBN: (纸本)0967335515

Decision support systems that help physicians are becoming very important part of medical decision making. They are based on different models and the best of them are providing an explanation together with an accurate, reliable and quick response. One of the most viable among decision-making models is the concept of decision trees, already successfully used for many medical decision making purposes. Although effective and reliable, the traditional decision tree construction approach still contains several deficiencies. Therefore we decided to develop and compare several decision supporting models, each of them built with different discretization of attributes and decision classes. For the construction of decision trees we used MtDeciT, in our laboratory developed tool for building decision trees using the classical induction method. All solutions were evolved for determining the influence of basic properties of child and his/her parents to length of successful breastfeeding. A comparison between developed models and obtained results has shown that the way of discretization obviously plays a great role in the reliable and accurate real-world medical decision making.

关键词： Decision trees

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CArE: A software package for computer-aided nurse education

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Health Informatics Journal 1999年第3期5卷 119-123页

作者： Habjanǐ, A. Kokol, P. Zorman, M. Šlajmer-Japelj, M. The University College of Nursing Studies Maribor Zitna Ulica 15 2000 Slovenia Faculty of Electrical Engineering and Computer Science Laboratory for System Design Maribor Smetanova 17 2000 Slovenia

computer-managed instruction (CMI) has been used in nursing education since the late 1960s. It is because of its accessibility and self-paced format that CMI is very well suited both to students and practising nurses, as learning can take place at the learner's own pace and in his or her own time. In addition CMI also supports continuing education and distant learning. The aim of this paper is to present CArE - a software package for computer Aided Nurse Education and in particular, for teaching the basics of the nursing care process. This package has been developed as a result of the Phare TEMPUS project called NICE (Nursing Informatics and computer Aided Education) [14] [15].

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CALKAS: A computer Architecture Learning and Knowledge Assessment System 5

CALKAS: A Computer Architecture Learning and Knowledge Asses...

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5th Annual Workshop on computer Architecture Education, WCAE 1999

作者： Djordjevic, Jovan Milenkovic, Aleksandar Todorovic, Ivan Marinov, Darko Faculty of Electrical Engineering University of Belgrade P.O.Box 3554 Belgrade11120 Serbia Massachusetts Institute of Technology Laboratory for Computer Science 545 Technology Square #619a CambridgeMA02139 United States

ISBN: (纸本)9781450347419

The paper presents a computer Architecture Learning and Knowledge Assessment System named the CALKAS. It is a software tool aimed to be used for teaching computer architecture and organization. It offers the knowledge assessment and self-learning facilities. The knowledge assessment facilities are meant to be used in laboratory for the lab test and at home for the self-test. The self-learning facilities are meant to be used at home in the process of preparation for the work in the laboratory and for the exam. The CALKAS is developed as a WWW application. © 1999, Association for Computing Machinery, Inc. All rights reserved.

关键词： computer architecture

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Near field distributions in radial line slot antennas for surface wave coupled plasma generation

Near field distributions in radial line slot antennas for su...

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Antennas and Propagation Society International Symposium

作者： T. Yamamoto H. Ono M. Ando N. Goto N. Ishii Department of Electrical Engineering and Computer Science Faculty of Engineering Yamagata University Yonezawa Yamagata Japan Department of Electrical and Electronic Engineering Tokyo Institute of Tech. Meguro Tokyo Japan Department of Electronics and Systems Faculty of Engineering Takushoku University Hachioji Tokyo Japan Central Research Laboratory Tokyo Electron Limited Nirasaki Yamanashi Japan

The near field distributions in radial line slot antennas (RLSA) for surface wave coupled plasma (SWP) are examined. The RLSA are suitable for uniform, high density and large-area plasma generation. In order to realize higher productivity, quick evacuation of reaction gas a narrow gap process space is highly required. Since a wafer is placed close to the antenna aperture in this case, the evaluation of the electromagnetic near-fields in the RLSA for the plasma process is effective and indispensable. Plasma distribution control by changing the slot pattern is also possible based upon the information of the near field distributions. A novel slot pattern, which has many transverse slots, is fabricated and tested. The exponential attenuation of the fields in the boresight direction is measured and the interesting and remarkable characteristics of the novel RLSA for SWP process are confirmed.

关键词： Slot antennas Plasma density Plasma measurements Plasma waves Surface waves Couplings Productivity Aperture antennas Plasma properties Testing

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