2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel最新文献_第6页

High current short pulse generator for pulse magneto-oscillation (PMO) research 用于脉冲磁振荡(PMO)研究的大电流短脉冲发生器

2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel Pub Date : 2012-12-11 DOI: 10.1109/EEEI.2012.6376977

A. Shoihet, M. Shvartsas, B. Gdaliahu, I. Edry

{"title":"High current short pulse generator for pulse magneto-oscillation (PMO) research","authors":"A. Shoihet, M. Shvartsas, B. Gdaliahu, I. Edry","doi":"10.1109/EEEI.2012.6376977","DOIUrl":"https://doi.org/10.1109/EEEI.2012.6376977","url":null,"abstract":"Pulse magneto-oscillation (PMO) is one of the new techniques, developed for solidification structure refinement of metals and alloys, as it is was found in experimental results from the last decade. When electromagnetic pulses are applied to a molten metal during its solidification, the Lorentz forces causes to pressure waves, which change the microstructure from columnar dendrites to globular grains. PMO has a great potential in precise controlling of the solidification microstructure. The current work presents the development and the construction of a high current short pulse generator, which was required for the PMO research. The sample configuration consists of the non conductive crucible with a molten metal, which is placed coaxially inside a solenoid coil. The pulse generator is able to introduce short pulses with current amplitude of kA order into the coil. The proposed generator is based on resonance LCL circuit structure using a high current SCR switch. The fundamental idea of the power system is to convert a low-power, long-time input into a high-power, short-time output. Using resonant LC topologies, the durable resonant capacitor charging process established firstly, drawing low current from the net. Afterward, high frequency, high amplitude capacitor discharging process provides the necessary current to the work coil. The calculations and simulations of the system parameters and operation are described and the results of the experimental system behavior are shown. The theoretical considerations and the test results were found to be closely resembled.","PeriodicalId":177385,"journal":{"name":"2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130265063","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

Multi-dimensional laser mode combs via active mode-locking 多维激光模式梳通过主动模式锁定

2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel Pub Date : 2012-12-11 DOI: 10.1109/EEEI.2012.6376919

G. Oren, A. Schwartz, A. Bekker, B. Levit, B. Fischer

引用次数: 0

Quasi-noise illumination in mm-wave imaging: From concept to realization 毫米波成像中的准噪声照明:从概念到实现

2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel Pub Date : 2012-12-11 DOI: 10.1109/EEEI.2012.6377104

B. Kapilevich, Y. Pinhasi, M. Anisimov, B. Litvak, D. Hardon

引用次数: 3

Fusion filter for hyperspectral target detection 用于高光谱目标检测的融合滤波器

2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel Pub Date : 2012-12-11 DOI: 10.1109/EEEI.2012.6376943

Elad Cohen, R. Peiser, S. Rotman

引用次数: 1

Error correction based on hamming distance preserving in arithmetical and logical operations 基于汉明距离保持的算术和逻辑运算误差校正

2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel Pub Date : 2012-12-11 DOI: 10.1109/EEEI.2012.6376946

S. Dolev, S. Frenkel, D. Tamir

引用次数: 0

Automatic learning of phonetic mappings for cross-language phonetic-search in keyword spotting 关键词查找跨语言语音搜索中的语音映射自动学习

2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel Pub Date : 2012-12-11 DOI: 10.1109/EEEI.2012.6376955

Y. Bar-Yosef, R. Aloni-Lavi, I. Opher, N. Lotner, E. Tetariy, V. Silber-Varod, V. Aharonson, A. Moyal

{"title":"Automatic learning of phonetic mappings for cross-language phonetic-search in keyword spotting","authors":"Y. Bar-Yosef, R. Aloni-Lavi, I. Opher, N. Lotner, E. Tetariy, V. Silber-Varod, V. Aharonson, A. Moyal","doi":"10.1109/EEEI.2012.6376955","DOIUrl":"https://doi.org/10.1109/EEEI.2012.6376955","url":null,"abstract":"Phonetic-search (PS) is an extremely fast technique used for spoken keyword spotting over large amounts of audio data. PS is based on matching a desired phonetic pattern over existing phonetic lattices, avoiding heavy computations of acoustic probabilities during the search. Since PS requires substantial acoustic and language resources (LR) for training acoustic models, there is a need for reducing model training costs to support new target languages. Particular cases of under-resourced languages pose even a greater challenge for PS as the available LR are not sufficient for acoustic model training. This study examines methods for keyword search in a new target language, using existing models of another source language in the lattice generation phase. We explore methodologies for learning cross-language phonetic mappings depending on the availability of data in the target language. We describe three approaches for creating phonetic-mappings: linguistic, acoustic, and statistic, introducing an efficient way for learning a robust statistical cross-language mapping. Our cross-language PS experiments showed that learning a good cross-language mapping can alleviate acoustic mismatches between languages, to significantly improve cross-language phonetic-search.","PeriodicalId":177385,"journal":{"name":"2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121270370","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: 4

Five-parameter model of photovoltaic cell based on STC data and dimensionless 基于STC数据和无因次的光伏电池五参数模型

2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel Pub Date : 2012-12-11 DOI: 10.1109/EEEI.2012.6377079

S. Lineykin, M. Averbukh, A. Kuperman

引用次数: 41

A constant energy constellation OFDM signal model with applications 恒能量星座OFDM信号模型及其应用

2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel Pub Date : 2012-12-11 DOI: 10.1109/EEEI.2012.6376994

Igal Kotzer, Smadar Har-Nevo, S. Sodin, S. Litsyn

引用次数: 0

Data mining opportunities in geosocial networks for improving road safety 地理社会网络中改善道路安全的数据挖掘机会

2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel Pub Date : 2012-12-11 DOI: 10.1109/EEEI.2012.6377049

M. Fire, D. Kagan, Rami Puzis, L. Rokach, Y. Elovici

引用次数: 36

Architectural comparison between VLIW and Vector processors VLIW和Vector处理器之间的架构比较

2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel Pub Date : 2012-12-11 DOI: 10.1109/EEEI.2012.6377077

G. Yuval, A. Mendelson, S. Greenberg

引用次数: 0