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2008 12th International Conference on Mathematical Methods in Electromagnetic Theory最新文献

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Two aspects in lossy compression of hypespectral aviris images 高光谱病毒图像有损压缩的两个方面
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580999
Vladimir V. Lukin, N. Ponomarenko, M. Zriakhov, A. Kaarna
{"title":"Two aspects in lossy compression of hypespectral aviris images","authors":"Vladimir V. Lukin, N. Ponomarenko, M. Zriakhov, A. Kaarna","doi":"10.1109/MMET.2008.4580999","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580999","url":null,"abstract":"Hyperspectral images formed by AVIRIS imager are often compressed for data transmission and storage. For this purpose, both lossless and lossy compression methods can be used, but the latter are able to provide considerably larger compression ratios. Lossy compression can be done effectively in automatic manner with grouping of sub-bands and setting the quantization step depending upon estimates of noise variance for sub-band images. In this paper we show how to select this quantization step for each group of sub-bands with providing a proper trade-off between losses (distortions) introduced and attainable compression ratio for simple and more realistic models of noise.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128793337","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
Solution of the problem of electromagnetic pulses’ diffraction by variable separation method 用可变分离法求解电磁脉冲的衍射问题
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580970
E. I. Gribnikova, A. Lerer, V. V. Makhno, G.P. Sinavsky
{"title":"Solution of the problem of electromagnetic pulses’ diffraction by variable separation method","authors":"E. I. Gribnikova, A. Lerer, V. V. Makhno, G.P. Sinavsky","doi":"10.1109/MMET.2008.4580970","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580970","url":null,"abstract":"Variable separation method (VSM) allows to obtain an analytical solution for a very small number of boundary problems of wavespsila scattering by metallic and dielectric bodies, but it can be used to construct numerical solution for a wide enough range of boundary problems. In the present work the wave equation was solved in cylindrical and spherical coordinate systems. Obtained results have methodical novelty and can be used as an alternative to present methods of solving of non-stationary problems of diffraction on two-dimensional bodies.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130697615","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
Conductivity of a solid in a strong nonuniform state 固体在强非均匀状态下的电导率
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580962
S. Sokolovsky
{"title":"Conductivity of a solid in a strong nonuniform state","authors":"S. Sokolovsky","doi":"10.1109/MMET.2008.4580962","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580962","url":null,"abstract":"The necessity of a correction of the Chapman-Enskog method of construction of hydrodynamic equations in the case of kinetics of dilute electron gas in a solid has been shown. The strong spatially nonuniform states are investigated when collision integral of the considered kinetic equation must take into account an influence of nonhomogeneity of the system on collisions of particles. An usual expression for electric current in the system is corrected.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116688037","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
Layered structure based filter with metamaterial layers 基于层状结构的超材料层滤波器
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4581049
A. Arkhipov
{"title":"Layered structure based filter with metamaterial layers","authors":"A. Arkhipov","doi":"10.1109/MMET.2008.4581049","DOIUrl":"https://doi.org/10.1109/MMET.2008.4581049","url":null,"abstract":"We present a design of a filter based on a planar layered structure for the infrared domain. The filter structure consists of usual material layers and layers of metamaterial. The important property of the filter is the low loss in the pass-band and high level of the attenuation in the stop-band.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"3 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128371109","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
Geometry optimization of periodic screen cell with two orthogonal rectangular waveguides 具有两个正交矩形波导的周期屏单元的几何优化
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4581057
S. Boruhovich, A. Gribovsky
{"title":"Geometry optimization of periodic screen cell with two orthogonal rectangular waveguides","authors":"S. Boruhovich, A. Gribovsky","doi":"10.1109/MMET.2008.4581057","DOIUrl":"https://doi.org/10.1109/MMET.2008.4581057","url":null,"abstract":"We consider the periodic screen with cell containing two rectangular slots with one offset relatively to the cellpsilas line of symmetry. Elements of reflection matrix and value of chirality measure in dependence of this offset are calculated. The optimal offset of slot in such periodic sell of thin enough screen is found. Additional checkup of chirality measure model is provided.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124328801","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
Two ways for calculation of field evolution in dielectric waveguide: Via Brillouin- or eigen-waves 介质波导场演化的两种计算方法:布里渊波和本征波
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580966
A. Nerukh, H. Semenova, N. Sakhnenko
{"title":"Two ways for calculation of field evolution in dielectric waveguide: Via Brillouin- or eigen-waves","authors":"A. Nerukh, H. Semenova, N. Sakhnenko","doi":"10.1109/MMET.2008.4580966","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580966","url":null,"abstract":"Two complementary ways for calculation of an initial value problem in a dielectric waveguide is presented: Brillouin waves approach and eigenfrequency approach. The results show pure coincidence of two ways of calculation but the Brillouin approach is more intuitive and visual and makes less demands to computation resources.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122689245","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
Some exact solutions of transient problems of electrodynamics in spherical coordinate system obtained by symmetry analysis of Klein-Gordon-Fock equation 通过对Klein-Gordon-Fock方程的对称分析，得到了球坐标系下电动力学瞬态问题的精确解
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580971
B. Kochetov, A. Butrym
{"title":"Some exact solutions of transient problems of electrodynamics in spherical coordinate system obtained by symmetry analysis of Klein-Gordon-Fock equation","authors":"B. Kochetov, A. Butrym","doi":"10.1109/MMET.2008.4580971","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580971","url":null,"abstract":"Applying separation of variables to Maxwell equations in time domain one arrives to Klein-Gordon-Fock equation that describes radial wave propagation. The separation parameter for free space case has special form allowing the general solution to be found in exact form. For arbitrary separation parameter, which occurs in analysis of conical lines, the general solution is not suitable for calculations since it contains fractional derivatives. In this paper we obtain several families of exact solutions for this case using method of symmetry analysis of the equation.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128946595","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
Excitation of a dielectric sphere by a radial electric dipole taking into account the spatial dispersion 考虑空间色散的径向电偶极子对介电球的激发
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580942
Y. Filipov, Y. Prokopenko, V. Yakovenko
{"title":"Excitation of a dielectric sphere by a radial electric dipole taking into account the spatial dispersion","authors":"Y. Filipov, Y. Prokopenko, V. Yakovenko","doi":"10.1109/MMET.2008.4580942","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580942","url":null,"abstract":"Excitation of dielectric sphere by radial electric dipole was studied with account spatial dispersion. Taking into account a spatial dispersion results in occurrence of the complementary E-type oscillations.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121873626","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
Determination of parameters of fractional-rational model using method of quasisolution searching 准解搜索法确定分数有理模型参数
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4581004
M. Andreev, V. Borulko
{"title":"Determination of parameters of fractional-rational model using method of quasisolution searching","authors":"M. Andreev, V. Borulko","doi":"10.1109/MMET.2008.4581004","DOIUrl":"https://doi.org/10.1109/MMET.2008.4581004","url":null,"abstract":"The opportunity of increase of accuracy and stability of fractional-rational approximation at the expense of use of quasisolution concept has been considered. The algorithm of quasisolution searching on the basis of increasing model order is presented. The accuracy of the suggested method has been analyzed and its application for processing the resonant response is considered.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122641326","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: 11
Electrodynamic analysis of carbon nanotube antenna 碳纳米管天线的电动力学分析
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580912
A. Kleschenkov, A. Lerer, V. V. Makhno, P. Makhno, O. Labunko
{"title":"Electrodynamic analysis of carbon nanotube antenna","authors":"A. Kleschenkov, A. Lerer, V. V. Makhno, P. Makhno, O. Labunko","doi":"10.1109/MMET.2008.4580912","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580912","url":null,"abstract":"The solution of the boundary problem of diffraction and excitation of system of carbon nanotubes-vibrators is reduced to solving of the integral equation with a logarithmic kernel. After regularization, integral equations were solved by means of collocation method. The character of behavior of the current on the vibratorpsilas ends was considered. The existence of resonances at the frequency range 0.1-1.0THz was shown.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122933791","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
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