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21st IEEE Convention of the Electrical and Electronic Engineers in Israel. Proceedings (Cat. No.00EX377)

11-12 April 2000

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  • 21st IEEE Convention of the Electrical and Electronic Engineers in Israel. Proceedings (Cat. No.00EX377)

    Publication Year: 2000
    Request permission for commercial reuse | PDF file iconPDF (458 KB)
    Freely Available from IEEE
  • Pattern detection using a maximal rejection classifier

    Publication Year: 2000, Page(s):193 - 194
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (129 KB)

    Summary form only given. In target detection applications, the aim is to detect occurrences of a specific target in a given signal. In general, the target is subjected to some particular type of transformation, hence we have a set of target signals to be detected. In this context, the set of non-target samples are referred to as clutter. In practice, the target detection problem can be characteriz... View full abstract»

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  • Optimal filters for gradient-based motion estimation

    Publication Year: 2000, Page(s):195 - 197
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (127 KB)

    Summary form only given. Estimating the motion between two images plays a vital role in many applications and has drawn a lot of attention during the last two decades. There are many ways to approach this problem and indeed many algorithms have been proposed for this task. In Barron et. al. (1994) a comparative survey of many motion estimation techniques is given. One family of such algorithms whi... View full abstract»

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  • A novel rectifier/inverter with adjustable power factor

    Publication Year: 2000, Page(s):226 - 229
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    A switched mode rectifier with adjustable input power-factor and low harmonics distortion is described. The converter is based on the 'boost' topology and has a bias capacitor connected in series with the AC source which provides a DC voltage offset at the input. This enables removal of a diode bridge rectifier that is commonly employed in switch-mode rectifiers. Hence, the circuit may be used to ... View full abstract»

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  • Author index

    Publication Year: 2000, Page(s):505 - 507
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    Freely Available from IEEE
  • Designing a central synchronization/scheduling unit for multiprocessors

    Publication Year: 2000, Page(s):495 - 498
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB)

    A parallel program being run on a multiprocessor can be represented by a task map: this is a directed graph describing the decomposition of the program into its computational granules (the tasks), and the precedence relations between them. The task map thereby defines the potential parallelism in executing the program. The program must be executed while satisfying the constraints defined by the ta... View full abstract»

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  • Impact of modulation index on coherent crosstalk in optically switched networks

    Publication Year: 2000, Page(s):79 - 82
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    The impact of imperfect modulation depth on crosstalk induced penalty in optical switched systems is theoretically and experimentally investigated. A non-linear relationship with a clear “knee” is observed, indicating an optimum modulation index View full abstract»

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  • Universal lattice-based quantizers for multiple descriptions

    Publication Year: 2000, Page(s):361 - 364
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    Multiple description source coding is aimed at achieving graceful degradation in reconstruction with respect to losing portions of the code, with the cost of some redundancy. In our research we examine source coding schemes for two descriptions and three decoders based on entropy coded dithered (“universal”) quantizers (ECDQ). We propose two techniques. The first is a two stage encoder... View full abstract»

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  • Electrical machines for electromotion and their design

    Publication Year: 2000, Page(s):209 - 212
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    The paper presents the design considerations of electrical machines for drive systems. The different types of electrical machines implemented in drive systems are overviewed and their main characteristics are discussed. Actual trends of using vector control techniques in inverter fed asynchronous motors and sensorless permanent magnet motor drives are explained and their advantages are illustrated... View full abstract»

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  • Characterization of diode-pumped single-frequency Er-Yb bulk microlasers at 1.55 μm

    Publication Year: 2000, Page(s):75 - 78
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB)

    Technological developments and scientific achievements on diode-pumped single-frequency Er-Yb:glass lasers at 1.55 μm are presented. The high performance of these bulk solid-state lasers in terms of output power, laser slope efficiency, single longitudinal and transverse mode operation, amplitude and frequency stability, and wavelength tunability, are emphasized. Frequency stabilization against... View full abstract»

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  • Deep Earth detection by EM signals

    Publication Year: 2000, Page(s):175 - 178
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (128 KB)

    The basis of the measurement is the reflected signal from the Earth in response to the injected electromagnetic (EM) waveform. The detection of natural resources (such as oil and gas) and pre-earthquake indications by EM signals was pioneered in Canada and the former USSR in 1958. Today this method is used worldwide. The transmitter generates the EM signal, by switching the current into a double p... View full abstract»

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  • Implementation of parallel compression on 3-dimensional images using PVM

    Publication Year: 2000, Page(s):202 - 205
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    The most important concept of the current day is the multimedia technology. Even a layman, likes to see visual concepts which are far better than 2D objects and writings. An image is worth a thousand words. The main problem that the 3D technique has is the image size it requires. The longer the rendering takes, the bigger the image size will be. So, the processing time as well as the image size th... View full abstract»

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  • Underwater acoustics communications in a time-varying environment

    Publication Year: 2000, Page(s):452 - 455
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    This paper addresses the problem of underwater acoustic channel estimation for communications in time-varying environments. In the case of a rapidly time-varying environment, the channel needs to be estimated and tracked continuously. Prior information on the channel can be used to improve channel estimation performance. In this paper, a priori statistics on the channel time-variations are used in... View full abstract»

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  • Markov-type routing protocol for the power line local area network

    Publication Year: 2000, Page(s):491 - 494
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    The progress in new modulation technologies for power line communications and in electronic measurement metering creates a platform for implementing distributed home automation applications. A special type of local area networks has been defined as the low voltage distribution network or power line LAN (PL-LAN). However, the quality of digital signals transmission over the power line circuits is p... View full abstract»

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  • Electronic transport analysis in a molecular doped polymer based on dispersive-trapping formalism

    Publication Year: 2000, Page(s):69 - 72
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    The spatio-temporal spreading features of charge packets from Time of Flight (TOF) current transients in a Molecular Doped Polymer (MDP) system are analyzed. The experimental results relate to the thermal and electric field prominant dependencies of the dispersion parameters besides the charge carrier mobility. The parameters describing the charge spatial spread are the velocities distributions wi... View full abstract»

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  • Queuing analysis of the single user fading channel

    Publication Year: 2000, Page(s):274 - 277
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    In this article a different concept is proposed for measuring the performance of a communication fading channel. Information theory is usually concerned with the rate of a single codeword, whether it has infinite length (long term capacity) or finite length. The two common criteria for measuring the rate for a finite length codeword are either to consider it as a random variable (outage capacity) ... View full abstract»

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  • Ka-band satellite systems: current state of development

    Publication Year: 2000, Page(s):171 - 174
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    This paper presents an overview of research targets, technologies and technical decisions for the existing and planned Ka-band satellite systems, taking into consideration the nature of satellite orbits, coverage and services the satellites are designed to provide View full abstract»

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  • Electrical grids regional partnership Turkey-Israel sign;E power

    Publication Year: 2000, Page(s):322 - 325
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    This article proposes the location of a power plant in the south western part of Turkey on the Mediterranean sea shore (Iskanderun area). The power plant will be connected with the Israeli grid, through a sub sea bundle of HVDC cables in Haifa Caesarea area, to be decided by IEC. This power plant's facilities belong to US Companies. The proposed location will solve several problems for Israel. Thi... View full abstract»

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  • New phonon in cadmium zinc telluride

    Publication Year: 2000, Page(s):57 - 60
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB)

    The discovery of an unreported phonon in Cd1-xZnx Te is presented. This phonon is only present in thin films, and only when 0<x<1. The phonon is seen at 195 cm-1 and the Raman line is a resonant at an excitation in the vicinity if 600 nm. We believe this phonon is caused by microcrystalline clusters of ZnTe embedded in the Cd1-xZnxTe fil... View full abstract»

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  • Universal detection of messages via finite-state channels

    Publication Year: 2000, Page(s):357 - 360
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    We propose a universal, asymptotically optimum decision rule for deciding whether or not an observed sequence generated at the output of an unknown finite-state channel corresponds to a given channel-input message. The hypothesized message is tested against a certain alternative message or several alternative messages under the Neyman-Pearson criterion View full abstract»

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  • Engineered ferroelectric domain configurations in KTiOPO4 crystals for nonlinear optical converters

    Publication Year: 2000, Page(s):472 - 475
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    A significant decrease is observed in the dielectric dispersion, conductivity, coercive and internal fields of near stoichiometric KTiOPO 4 crystals. A periodic domain structure with a period of 24.7 μm was fabricated on a 10-mm long crystal by electric field poling. Whereas standard flux-grown KTiOPO4 crystals can be periodically poled only at low temperatures (near 170 K... View full abstract»

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  • Local polynomial models for classification

    Publication Year: 2000, Page(s):369 - 372
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    We consider the problem of pattern classification based on empirical data. In particular, we focus on local approaches (Fan and Gijbels 1996), based on information obtained from the neighborhood of each point whose classification is desired, similar to the nearest neighbor approach. The problem is formulated within a local maximum-likelihood approach, and performance bounds as well as some prelimi... View full abstract»

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  • Electric power quality and efficiency of power supply

    Publication Year: 2000, Page(s):222 - 225
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    The quality of power supply depends on the quality of electrical energy, and also on the frequency and duration of probable interruptions in power supply, which increase with decrease of electric power quality (EPQ). The problem of EPQ has an important economic and technical significance for all countries, including Israel. Based on well-known experiences of solving the main aspects of EPQ problem... View full abstract»

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  • Image partitioning for fractal coding under rate and complexity constraints

    Publication Year: 2000, Page(s):379 - 383
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    Fractal image coding is a relatively new technique for compact representation of an image by exploiting self-similarities between parts of the image and other parts in it at a higher resolution. The various parts at different resolutions are consequences of a partition grid and splitting criterion applied to the image. We propose a partitioning criterion which takes in consideration the computatio... View full abstract»

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  • Color constancy: a biological model and its application for still and video images

    Publication Year: 2000, Page(s):198 - 201
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    A novel biological model for color constancy (CC) is presented. This is the first biological model that succeeds in achieving automatic color correction of real still and video images (registered patent). It is based on two chromatic adaptation mechanisms in retinal color-coded cells: local adaptation and remote chromatic adaptation. Our simulations calculate the perceived image in order to correc... View full abstract»

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