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Electrical and electronic engineers in israel, 2000. the 21st ieee convention of the

Date 11-12 April 2000

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Displaying Results 1 - 25 of 106
  • 21st IEEE Convention of the Electrical and Electronic Engineers in Israel. Proceedings (Cat. No.00EX377)

    Publication Year: 2000
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    Freely Available from IEEE
  • 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
  • Synchronization analysis of multi-channel EEG of schizophrenic during working-memory tasks

    Publication Year: 2000, Page(s):337 - 341
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    A leading hypothesis suggests that schizophrenic patients suffer from a “disconnection syndrome”. A failure in functional connectivity curtails the cortical integration and network activation needed to perform working memory tasks. Multichannel EEG from 10 healthy people (control) and 10 schizophrenics have been used for the comparison of several channel synchronization-feature extract... View full abstract»

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  • Evaluation of electric and magnetic fields in non-linear media on the grounds of the field geometry

    Publication Year: 2000, Page(s):330 - 333
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    Modern methods of evaluation of electromagnetic fields in nonlinear media, such as the numerical method based on the method of finite elements, are very time and labor consuming, they are distinguished by high-priced available programs and leave optimization problems virtually intractable. It is in the author's opinion that these drawbacks can be eliminated through the use of the approximation ana... 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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  • Novel CMOS compatible frontside micromachining of integrated thermoelectric sensors

    Publication Year: 2000, Page(s):417 - 420
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    CMOS compatible integrated thermoelectric sensors were designed and realized using a standard CMOS process and frontside RIE micromachining. The suspended structures were designed to have a spiral structure that enhances the thermal resistance and isolation of the sensor. Using dry RIE frontside micromachining for the release of the sensors allows better yield in realization of sensitive and small... View full abstract»

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  • Using implicit polynomials for image compression

    Publication Year: 2000, Page(s):384 - 388
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    Implicit polynomials (IF) are being used to represent 2D curves and 3D surfaces. The zero-set of a 2D implicit polynomial of the form of p(x,y)=a1xN+a2xN-1y+...+ a r=0 can be used to describe data points making up a 2D curve. A similar 3D polynomial-p(x,y,z)=0 describes data points on a 3D surface. We describe a way to restrict the zero-set of... View full abstract»

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  • Behavior-based navigation for an indoor mobile robot

    Publication Year: 2000, Page(s):281 - 284
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    Reports the implementation of a mobile robot system for autonomous indoor navigation. The system architecture is based on a hybrid approach, which combines a-priori knowledge stored in a hierarchical world model with reactive behavior-based control for navigation guidance and obstacle avoidance. The robot position estimation in the world frame is performed by an iconic matching algorithm and based... View full abstract»

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  • Cellular CDMA (IS-95) location, A-FLT (assisted forward link triangulation) proof-of-concept interim results

    Publication Year: 2000, Page(s):179 - 182
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (140 KB)

    The A-FLT location method for cellular COMA (IS-95) is now incorporated into the IS-95 standard either as a standalone method or as a companion/complement to A-GPS (Assisted GPS). A proof-of-concept project is reported which included the development of a processing platform (signal measurement and extraction, timing estimation, location estimation), extensive urban (Tel Aviv center) field data gat... View full abstract»

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  • 1/f noise in CMOS transistors for analog applications

    Publication Year: 2000, Page(s):53 - 56
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    Noise measurements of the 1/f noise in p-mos and n-mos transistors for analog applications are reported under wide bias conditions ranging from subthreshold to saturation. Two “low noise” CMOS processes of 2 μm and 0.5 μm technologies are compared and it is found that the more advanced process, with 0.5 μm technology, exhibits significantly reduced 1/f noise, due to optimized ... View full abstract»

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  • AC-AC pulse converter for the induction heating applications

    Publication Year: 2000, Page(s):413 - 416
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (132 KB)

    As is known, the most useful power sources for induction heaters are semiconductor converters. The operating frequency range, which is used for induction heating, is about 0.5-50 kHz. In each specific case the operating frequency depends on the volume of the heated block and on the character of the technological process. Initially, since the electrical machine frequency converters have been used f... View full abstract»

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  • Modeling and evaluation of error flow characteristics in the Nakagami fading channel

    Publication Year: 2000, Page(s):439 - 442
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    The design of a data communication system using a channel with additive and multiplicative interference presents a rather difficult problem. The fading process is usually exponentially correlated, but have a variety of the probability density functions (PDF) (Nakagami, lognormal, gamma etc.). Therefore it is rather difficult to achieve analytical results on the estimation of different modems perfo... View full abstract»

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  • Estimating the principle curvatures and the Darboux frame from real 3D range data

    Publication Year: 2000, Page(s):105 - 109
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    Local differential properties of surfaces such as principle curvatures and the local Darboux frame are natural tools to be used during processes of object recognition or any other process, which involves geometric property extraction from 3D range data. As second-order derivative computations are involved in principle curvatures and principle directions computations, their estimation are highly se... View full abstract»

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  • A lower bound on the probability of decoding error over a BSC channel

    Publication Year: 2000, Page(s):271 - 273
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (96 KB)

    For a code C of length n and size |C, we estimate the error probability of the maximum likelihood decoding. In this paper we address this problem for the binary symmetric channel (BSC) defined by its transition probability p. We discuss the case when we know the distance distribution of the code. We also assume that the code is regular in the sense that the distribution of the distances from a cod... View full abstract»

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  • Analysis of cell delineation protocol in ATM network

    Publication Year: 2000, Page(s):487 - 490
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    This paper is dedicated to a probabilistic analysis of the cell delineation (CD) procedure. To perform this analysis, a special Markov chain model was developed that takes into consideration the possible ways to lose per-cell synchronization in the ATM data link. Specifically, two processes are formulated. The first one corresponds to erroneous bit flow and the second process pertains to synchroni... View full abstract»

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  • High superconductor YBCO thin film evaporated on Ni metal layers

    Publication Year: 2000, Page(s):49 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (132 KB)

    A report on our experimental study of the fabrication of YBCO thin film on Ni metal is presented. A simple inexpensive conventional vacuum system consists of a turbomolecular pump and featuring a base pressure better than 10-3 Pa was used for the YBCO thin film preparation. No device of any kind was applied to control or regulate the thickness or stoichiometry of the film during the eva... View full abstract»

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  • Set-point regulation for a robot with model uncertainties

    Publication Year: 2000, Page(s):289 - 292
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB)

    We introduce a smooth linear control algorithm for the set-point regulation of a robot with uncertainties in its mathematical model. This control algorithm incorporates position measurement only, while compensating for the unknown gravity forces. We also discuss its performance in comparison to other algorithms with similar structure View full abstract»

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  • Dynamical behavior of synchronous generator under various transient conditions

    Publication Year: 2000, Page(s):213 - 217
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    This paper presents a novel investigation tool for the dynamical behavior of a singly operated synchronous generator. The model state equations are based upon Park's flux linkage model. Several transient conditions are shown and discussed 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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  • 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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  • μLAN: local network between hardware devices

    Publication Year: 2000, Page(s):499 - 502
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    Interfacing different hardware devices, combining software and hardware, has always been one of the most challenging, important and problematic design points in modern hardware based systems. The interface should be defined per link between two hardware devices and must support essential properties like data and clock synchronization. If the system consists of many hardware devices, routing the sy... View full abstract»

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  • Assessment of changes in arterial compliance by photoplethysmography

    Publication Year: 2000, Page(s):351 - 354
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (116 KB)

    Many medications have constrictive or dilatory influences on blood vessels; they can influence either big or small vessels, but the available non-invasive methods for the assessment of blood flow or blood vessels compliance are not appropriate for microcirculation. We have previously used photoplethysmography (PPG) for the measurement of light absorption changes in the tissue, for the assessment o... View full abstract»

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  • Fast active object tracking in color video

    Publication Year: 2000, Page(s):101 - 104
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    An important problem in image analysis is object segmentation and tracking in image sequences. It involves the isolation of a single object from the rest of the image that may include other objects and a background. Here, we focus on boundary detection of one or several objects by a dynamic model known as the `geodesic active contour'. Although the geodesic active contour model has many advantages... 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 (100 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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