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2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering最新文献

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Bias reduction of the nearest neighbor entropy estimator 最近邻熵估计器的减偏
2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering Pub Date : 2008-07-21 DOI: 10.1142/S0218127408022731
A. Kaltchenko, N. Timofeeva, E. A. Timofeev
{"title":"Bias reduction of the nearest neighbor entropy estimator","authors":"A. Kaltchenko, N. Timofeeva, E. A. Timofeev","doi":"10.1142/S0218127408022731","DOIUrl":"https://doi.org/10.1142/S0218127408022731","url":null,"abstract":"A new family of entropy estimators, constructed as a linear combination (weighted average) of nearest neighbor estimators with slightly different individual properties, is proposed. It is shown that a special sub-optimal selection of the coefficients in the linear combination results in a reduction of the estimatorpsilas bias. Computer simulation results are provided.","PeriodicalId":295946,"journal":{"name":"2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134093588","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
A step-by-step method for Z-loop construction using graph theory and topology for power system studies 用图论和拓扑学逐步构建电力系统z环的方法
2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering Pub Date : 2008-07-21 DOI: 10.1109/SIBIRCON.2008.4602561
T. Oepomo
{"title":"A step-by-step method for Z-loop construction using graph theory and topology for power system studies","authors":"T. Oepomo","doi":"10.1109/SIBIRCON.2008.4602561","DOIUrl":"https://doi.org/10.1109/SIBIRCON.2008.4602561","url":null,"abstract":"This manuscript will provide a step by step method on how a graph theory and topology can be utilized to construct a Z-loop matrix for the study of faulted power systems. The growing demand for reliable electrical power supply has forced the pace developments in electrical power system analysis using computer. In this, power system analysis plays a significant role for the analysis of faulted power system, eventually for power system protection and control.","PeriodicalId":295946,"journal":{"name":"2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132699912","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
Iterative Gerchberg-Papoulis algorithm for fan-beam tomography 扇束层析成像的迭代Gerchberg-Papoulis算法
2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering Pub Date : 2008-07-21 DOI: 10.1109/SIBIRCON.2008.4602612
V. Pickalov, D. Kazantsev
{"title":"Iterative Gerchberg-Papoulis algorithm for fan-beam tomography","authors":"V. Pickalov, D. Kazantsev","doi":"10.1109/SIBIRCON.2008.4602612","DOIUrl":"https://doi.org/10.1109/SIBIRCON.2008.4602612","url":null,"abstract":"In tomography from a small number of projections it is necessary to apply the algorithms that allow to use prior information about the solution. The Gerchberg-Papoulis algorithm (G-P), based on the central slice theorem in Fourier space, is known as one of the most effective iterative methods for few-projection tomography in parallel scanning geometries. This algorithm has not been studied for fan-beam geometries, because a central slice theorem is lacking. In this paper, we state a recently developed central slice theorem for fan-beam geometries, and on this basis we develop a new iterative G-P algorithm. In numerical simulation two versions are investigated.We study how additive random noise in the projections influences the accuracy of the reconstructions, and we give regularization criteria for suppressing random noise in the measurements.","PeriodicalId":295946,"journal":{"name":"2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering","volume":"5 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120844916","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: 6
On error-correcting codes for a steganography channel 隐写信道的纠错码
2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering Pub Date : 2008-07-21 DOI: 10.1109/SIBIRCON.2008.4602619
A. D'yachkov, D. Harnett, V. Rykov
{"title":"On error-correcting codes for a steganography channel","authors":"A. D'yachkov, D. Harnett, V. Rykov","doi":"10.1109/SIBIRCON.2008.4602619","DOIUrl":"https://doi.org/10.1109/SIBIRCON.2008.4602619","url":null,"abstract":"A steganography channel is a method of transmitting hidden data by embedding it into another document in a way that is difficult to detect. In this paper, we analyze a model of data-hiding for communication via noiseless steganography channel by application of error-correcting codes. Two corresponding Shannon theorems are proved, and the average covering radius of a code is discussed as an important parameter for steganography applications. The Shannon theorems generalize the results obtained in D'yachkov (2006) for the binary model.","PeriodicalId":295946,"journal":{"name":"2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116164323","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
About method for numerical modeling of the electron beams dynamics 电子束动力学数值模拟方法研究
2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering Pub Date : 2008-07-21 DOI: 10.1109/SIBIRCON.2008.4602563
G. S. Sadovoi, O. V. Suslova
{"title":"About method for numerical modeling of the electron beams dynamics","authors":"G. S. Sadovoi, O. V. Suslova","doi":"10.1109/SIBIRCON.2008.4602563","DOIUrl":"https://doi.org/10.1109/SIBIRCON.2008.4602563","url":null,"abstract":"Space-time ratios in electronic beam are examined. Expression for distances between electrons in the accelerated beam is received. The criterion of existence of particle waves is received.","PeriodicalId":295946,"journal":{"name":"2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116593503","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
HAPS systems performance evaluation by simulation techniques at Ka band 基于Ka波段仿真技术的HAPS系统性能评估
2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering Pub Date : 2008-07-21 DOI: 10.1109/SIBIRCON.2008.4602599
J. A. Delgado-Penín, L. Dell' Orletta
{"title":"HAPS systems performance evaluation by simulation techniques at Ka band","authors":"J. A. Delgado-Penín, L. Dell' Orletta","doi":"10.1109/SIBIRCON.2008.4602599","DOIUrl":"https://doi.org/10.1109/SIBIRCON.2008.4602599","url":null,"abstract":"The high altitude platforms stations (HAPS) represent an attractive option today for fixed broadband wireless access. This paper describes an analysis by simulation of the performance of a coded digital transmission system at Ka band for HATS in urban area when are considered weather impairments. Numerical results in terms of BER are obtained when (LDPC/M-APSK) coded signals are affected by fading caused by weather effects at Ka band. These effects are taken in consideration using a time series obtained by simulation. These results should be useful to a system designer of HATS communications systems at Ka band.","PeriodicalId":295946,"journal":{"name":"2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123709217","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
Analysis of induction heating eddy current distribution based on 3D FEM 基于三维有限元法的感应加热涡流分布分析
2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering Pub Date : 2008-07-21 DOI: 10.1109/SIBIRCON.2008.4602566
Wang Youhua, Wang Junhua, L. Jiangui, Liang HaoHua
{"title":"Analysis of induction heating eddy current distribution based on 3D FEM","authors":"Wang Youhua, Wang Junhua, L. Jiangui, Liang HaoHua","doi":"10.1109/SIBIRCON.2008.4602566","DOIUrl":"https://doi.org/10.1109/SIBIRCON.2008.4602566","url":null,"abstract":"In some applications, travelling wave induction heating (TWIH) could make this kind of heating more profitable in comparison with other known systems. In this paper a three-dimensional single-coil model of transverse flux induction heating inductors (TFIH) and TWIH has been simulated by ANSYS. The different eddy current densities in the metal strip also have been analyzed when the circle loop lies in the internal or external of the projector.","PeriodicalId":295946,"journal":{"name":"2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125208885","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: 9
Numerical B-spline solution of emission and vector 2D-tomography problems for media with absorption and refraction 具有吸收和折射介质的发射和矢量二维层析成像问题的b样条数值解
2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering Pub Date : 2008-07-21 DOI: 10.1109/SIBIRCON.2008.4602618
E. Derevtsov, I. Svetov, Yu. S. Volkov, T. Schuster
{"title":"Numerical B-spline solution of emission and vector 2D-tomography problems for media with absorption and refraction","authors":"E. Derevtsov, I. Svetov, Yu. S. Volkov, T. Schuster","doi":"10.1109/SIBIRCON.2008.4602618","DOIUrl":"https://doi.org/10.1109/SIBIRCON.2008.4602618","url":null,"abstract":"A method of numerical solution for the tomography problems setting in a with medium with refraction and absorption is suggested. Namely, scalar or vector field by its ray transform calculated along geodesics of a Riemannian metric is reconstructed. The approximation of the solution is determined with usage of the least squares method. As bases we use the local bases of scalar and vector fields constructed by means of two-dimensional B-splines. Influence (on accuracy of reconstruction) such factors as smoothness of the required fields, curvature of the metrics and character of change of absorption coefficient, degree of digitization of data, an order and quantity of bases B-splines, various ways of construction of the local bases was numerically investigated.","PeriodicalId":295946,"journal":{"name":"2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129271183","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: 9
Design of structured irregular LDPC codes 结构化不规则LDPC码的设计
2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering Pub Date : 2008-07-21 DOI: 10.1109/SIBIRCON.2008.4602580
P. Trifonov
{"title":"Design of structured irregular LDPC codes","authors":"P. Trifonov","doi":"10.1109/SIBIRCON.2008.4602580","DOIUrl":"https://doi.org/10.1109/SIBIRCON.2008.4602580","url":null,"abstract":"A novel construction of irregular LDPC codes based on cyclic shift matrices is presented. The construction allows compact specification of LDPC codes of arbitrary length. An optimization algorithm is presented for finding the parameters of the code.","PeriodicalId":295946,"journal":{"name":"2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125556093","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: 3
Simulation by BPM and FDTD of new thin heterogeneous optical waveguides on SOI for reconfigurable optical add/drop multiplexers 基于BPM和FDTD的可重构光加/丢复用器新型薄型异质光波导SOI仿真
2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering Pub Date : 2008-07-21 DOI: 10.1109/SIBIRCON.2008.4602635
A. Tsarev
{"title":"Simulation by BPM and FDTD of new thin heterogeneous optical waveguides on SOI for reconfigurable optical add/drop multiplexers","authors":"A. Tsarev","doi":"10.1109/SIBIRCON.2008.4602635","DOIUrl":"https://doi.org/10.1109/SIBIRCON.2008.4602635","url":null,"abstract":"This paper presents the new type of heterogeneous optical waveguide on silicon-on-insulator (SOI) and its application for ROADM. The side p-n-doping of 220 nm times 35 mum silicon core provides quasi-single-mode behavior due to small optical losses for fundamental mode with 10 mum mode width and increasing losses for the higher modes.","PeriodicalId":295946,"journal":{"name":"2008 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134539832","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: 3
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