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The Parallel Booster: software architecture and optimization results 并行助推器:软件架构和优化结果
Eighteenth Convention of Electrical and Electronics Engineers in Israel Pub Date : 1995-03-07 DOI: 10.1109/EEIS.1995.513779
I. Exman
{"title":"The Parallel Booster: software architecture and optimization results","authors":"I. Exman","doi":"10.1109/EEIS.1995.513779","DOIUrl":"https://doi.org/10.1109/EEIS.1995.513779","url":null,"abstract":"The Parallel Booster is a software package to enable the development of parallel programs literally in a couple of months, and to allow full run-time exploitation of the installed computer base by means of a set of unique functions. The architecture of the Booster and some of these functions are succinctly described. As a concrete proof of the Booster power, the parallelization of an actual application is discussed. Both claims were demonstrated: dramatic acceleration of an optimization computation was achieved. The modifications were of a surgical nature, explaining why short development efforts are possible.","PeriodicalId":219797,"journal":{"name":"Eighteenth Convention of Electrical and Electronics Engineers in Israel","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121891596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Speech analysis and synthesis using a glottal excited AR model with DTW-based glottal determination 基于dtw声门识别的声门激发AR模型的语音分析与合成
Eighteenth Convention of Electrical and Electronics Engineers in Israel Pub Date : 1995-03-07 DOI: 10.1109/EEIS.1995.513822
G. Cohen, D. Malah
{"title":"Speech analysis and synthesis using a glottal excited AR model with DTW-based glottal determination","authors":"G. Cohen, D. Malah","doi":"10.1109/EEIS.1995.513822","DOIUrl":"https://doi.org/10.1109/EEIS.1995.513822","url":null,"abstract":"In this paper we present, a new method for determining the excitation waveform of a glottal excited speech synthesizer. In the glottal excited speech model, voiced speech is decomposed into a parametric glottal shaped excitation signal and an AR vocal tract filter. The new glottal determination method can be used iteratively with vocal tract filter updates in model analysis. In each iteration the new glottal pulse positioning is determined at sub-sample resolution using by a Multi-Dimensional Dynamic Time Warping (MD-DTW) algorithm, using an analysis-by-synthesis approach to minimize the squared-error between the original and the synthetic speech.","PeriodicalId":219797,"journal":{"name":"Eighteenth Convention of Electrical and Electronics Engineers in Israel","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122694704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Considerations of neutral current protection operation during cascade short-circuit of capacitor unit 电容机组级联短路时中性电流保护操作的思考
Eighteenth Convention of Electrical and Electronics Engineers in Israel Pub Date : 1995-03-07 DOI: 10.1109/EEIS.1995.513815
A. Kalyuzhny, A. Weiler
{"title":"Considerations of neutral current protection operation during cascade short-circuit of capacitor unit","authors":"A. Kalyuzhny, A. Weiler","doi":"10.1109/EEIS.1995.513815","DOIUrl":"https://doi.org/10.1109/EEIS.1995.513815","url":null,"abstract":"This paper addresses the problem of the capacitor bank neutral current protection operation during cascade short-circuit of capacitor units. A specific example bank is used to assist in the understanding and use of this information that can be applied to all ungrounded neutral double-wye capacitor banks including modern all-film capacitors with external expulsion fuses. The performed analysis is based on the developed analytical expressions of state variables in unbalanced conditions of these capacitor banks. An approach to prevent a misoperation of the neutral current protection during the progressive failure of capacitor units is proposed.","PeriodicalId":219797,"journal":{"name":"Eighteenth Convention of Electrical and Electronics Engineers in Israel","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115116693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cyclotron-resonance maser experiments in first and second harmonics 一、二次谐波回旋共振脉泽实验
Eighteenth Convention of Electrical and Electronics Engineers in Israel Pub Date : 1995-03-07 DOI: 10.1109/EEIS.1995.514166
A. Shahadi, R. Drori, E. Jerby
{"title":"Cyclotron-resonance maser experiments in first and second harmonics","authors":"A. Shahadi, R. Drori, E. Jerby","doi":"10.1109/EEIS.1995.514166","DOIUrl":"https://doi.org/10.1109/EEIS.1995.514166","url":null,"abstract":"Cyclotron-resonance maser (CRM) oscillator experiments in a non-dispersive (TEM-mode) waveguide are reported in this paper. The table-top CRM oscillator constructed in our laboratory operates with a low-energy (<5 keV), low-current (<1 A) electron beam. The electron beam is rotating in the cyclotron frequency due to an axial magnetic field produced by an external solenoid. The large electron transverse velocity, needed to obtain amplification in a TEM-CRM, is achieved by a strong kicker coil. The coplanar waveguide used in this experiment supports odd and even TEM-modes, and enables cyclotron interactions with both first and second harmonics. Microwave output power at the first cyclotron harmonic is observed in the range of 3-6 GHz, where the frequency is tuned by the axial magnetic field in this range. A considerable second harmonic emission is observed around 7 GHz frequency. This experiment may lead to the development of a new compact high-power microwave source.","PeriodicalId":219797,"journal":{"name":"Eighteenth Convention of Electrical and Electronics Engineers in Israel","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131074484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unsupervised text independent speaker classification 无监督文本独立说话人分类
Eighteenth Convention of Electrical and Electronics Engineers in Israel Pub Date : 1995-03-07 DOI: 10.1109/EEIS.1995.513821
A. Cohen, V. Lapidus
{"title":"Unsupervised text independent speaker classification","authors":"A. Cohen, V. Lapidus","doi":"10.1109/EEIS.1995.513821","DOIUrl":"https://doi.org/10.1109/EEIS.1995.513821","url":null,"abstract":"Speaker recognition and verification has been used in a variety of commercial, forensic and military applications. The classical problem is that of supervised recognition, in which there is sufficient a priori information on the speakers to be identified. In such cases, the recognition system has speaker models, estimated during training sessions. This paper deals with the problem of unsupervised speaker classification, where no a priori speaker information is available. The algorithm accepts multi-speaker dialogue speech data, estimates the number of speakers and assigns each speech segment to its speaker. Preliminary results are described.","PeriodicalId":219797,"journal":{"name":"Eighteenth Convention of Electrical and Electronics Engineers in Israel","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131108129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
Reflectance in the red and near infra-red ranges of the spectrum as tool for remote chlorophyll estimation in inland waters-Lake Kinneret case study 光谱中红光和近红外波段的反射率作为内陆水域叶绿素遥感估算的工具——以Kinneret湖为例
Eighteenth Convention of Electrical and Electronics Engineers in Israel Pub Date : 1995-03-07 DOI: 10.1109/EEIS.1995.514184
Anatoly, Gitelsonl, Y. Yacobi
{"title":"Reflectance in the red and near infra-red ranges of the spectrum as tool for remote chlorophyll estimation in inland waters-Lake Kinneret case study","authors":"Anatoly, Gitelsonl, Y. Yacobi","doi":"10.1109/EEIS.1995.514184","DOIUrl":"https://doi.org/10.1109/EEIS.1995.514184","url":null,"abstract":"Signature analysis of reflectance spectra was used for the selection of the most suitable spectral bands for remote sensing of chlorophyll in inland waters. The parameters of the reflectance peak near 700 nm were employed for construction of algorithms for chlorophyll determination. The best model, validated by independent data sets, enabled estimation of chlorophyll concentration with an error <0.6 mg/m/sup 3/ for period of low Chl concentration and <6.5 mg/m/sup 3/ for period of the phytoplankton bloom. For the purpose of chlorophyll mapping in Lake Kinneret, the use of three relatively narrow spectral bands was sufficient. Radiometric data were also used to simulate radiances in the channels of TM Landsat and to find algorithm for chlorophyll assessment. The ratio (TM2-TM3)/TM1 was used to retrieve chlorophyll in the range 3-10 mg/m/sup 3/ with an error of <1 mg.m/sup -3/; the ratio TM4/TM3 was used to map chlorophyll in the range 10-200 mg/m/sup 3/ with 10 gradations.","PeriodicalId":219797,"journal":{"name":"Eighteenth Convention of Electrical and Electronics Engineers in Israel","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133606239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Monitoring of separate lung ventilation in anesthesia and intensive care 麻醉和重症监护中单独肺通气的监测
Eighteenth Convention of Electrical and Electronics Engineers in Israel Pub Date : 1995-03-07 DOI: 10.1109/EEIS.1995.514155
G. Sod-Moriah, O. Gelber, G. Gurman, A. Cohen
{"title":"Monitoring of separate lung ventilation in anesthesia and intensive care","authors":"G. Sod-Moriah, O. Gelber, G. Gurman, A. Cohen","doi":"10.1109/EEIS.1995.514155","DOIUrl":"https://doi.org/10.1109/EEIS.1995.514155","url":null,"abstract":"Analysis of lung sounds for monitoring and diagnosis of pulmonary function is well known. The application of these techniques to ventilation monitoring during anesthesia or in intensive care, may prove a convenient, accurate and very low latency monitoring device. A prototype of such a system is described. The system is able to monitor the current state of ventilation and automatically classify among three types: Tracheal Intubation (TRI), Left Lung Intubation (LLI) and Right Lung Intubation (RLI), Preliminary experiments, performed on dogs, show mean classification accuracy of 90%.","PeriodicalId":219797,"journal":{"name":"Eighteenth Convention of Electrical and Electronics Engineers in Israel","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114541664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A technique to prove the channel coding theorem for a reduced class of codes and its applications 一类约简码的信道编码定理的证明技术及其应用
Eighteenth Convention of Electrical and Electronics Engineers in Israel Pub Date : 1995-03-07 DOI: 10.1109/EEIS.1995.513769
N. Shulman, M. Feder
{"title":"A technique to prove the channel coding theorem for a reduced class of codes and its applications","authors":"N. Shulman, M. Feder","doi":"10.1109/EEIS.1995.513769","DOIUrl":"https://doi.org/10.1109/EEIS.1995.513769","url":null,"abstract":"The channel coding theorem for DMCs is proved using random coding. The standard proofs use the property of total randomness of the ensemble of codes. For a more restricted ensemble of codes a specific proof is needed. This has been done, for example, for linear codes, time-varying convolutional codes and for constant composition (constant type) codes. In this work we show that weaker demands on the ensembles of codes, than independency of the code words, are needed. As a result, we get simple proofs of the channel coding theorem for interesting restricted ensembles of codes. As an example we can prove the channel coding theorem for the ensembles of codes based on the output of an LFSR (linear feedback shift register). A particularly interesting application of our technique is a proof that fixed (time-invariant) convolutional codes attain capacity.","PeriodicalId":219797,"journal":{"name":"Eighteenth Convention of Electrical and Electronics Engineers in Israel","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114668755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Optimization of the auxiliary switch components in a flying capacitor ZVS PWM converters 飞电容ZVS PWM变换器中辅助开关元件的优化设计
Eighteenth Convention of Electrical and Electronics Engineers in Israel Pub Date : 1995-03-07 DOI: 10.1109/EEIS.1995.514192
S. Ben-Yaakov, G. Ivensky, O. Levitin, A. Treiner
{"title":"Optimization of the auxiliary switch components in a flying capacitor ZVS PWM converters","authors":"S. Ben-Yaakov, G. Ivensky, O. Levitin, A. Treiner","doi":"10.1109/EEIS.1995.514192","DOIUrl":"https://doi.org/10.1109/EEIS.1995.514192","url":null,"abstract":"A family of PWM converters with an Auxiliary Switch Assisted Soft Switcher (AASS) is studied. The basic AASS cell includes an inductor connected in series with the auxiliary switch of the converter, a capacitor connected in parallel with the main switch or main diode of the converter and an additional capacitor (designated a 'Flying' capacitor) connected through an auxiliary diode parallel to the inductor and through an extra auxiliary diode parallel to the main diode of the converter. The unified analysis of steady-state processes in a generalized AASS converter, carried out in this investigation, is applicable to various PWM topologies. It is shown that AASS ensures soft switching of all power devices and that the voltage and current stresses are not appreciably higher than in the corresponding hard switched PWM topologies. A design procedure for optimization of AASS parameters is developed. Experimental investigation (a Boost DC-DC converter 130/380 V, 1.1 kW, switching frequency 100...160 kHz) confirmed the results of the theoretical analysis.","PeriodicalId":219797,"journal":{"name":"Eighteenth Convention of Electrical and Electronics Engineers in Israel","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121802261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 20
Maximum likelihood soft decoding of binary codes by projecting on Abelian group codes 投影在阿贝尔群码上的二进制码的最大似然软译码
Eighteenth Convention of Electrical and Electronics Engineers in Israel Pub Date : 1995-03-07 DOI: 10.1109/EEIS.1995.514177
M. Ran, J. Snyders
{"title":"Maximum likelihood soft decoding of binary codes by projecting on Abelian group codes","authors":"M. Ran, J. Snyders","doi":"10.1109/EEIS.1995.514177","DOIUrl":"https://doi.org/10.1109/EEIS.1995.514177","url":null,"abstract":"An approach to fast maximum likelihood decoding of some binary codes is presented. The binary codewords are regarded as images of some C/sub g/ group code, called the projected code, defined over an Abelian group A. The neighbourhood of z, z/spl isin/A/sup N/, the vector of symbol-by-symbol soft decoding, is examined to identify the most likely codeword of C/sub g/. A small list of candidate codewords is prepared by employing certain elimination rules. A substantial reduction of computational complexity is achieved by this method.","PeriodicalId":219797,"journal":{"name":"Eighteenth Convention of Electrical and Electronics Engineers in Israel","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124558275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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