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2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory最新文献

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Many-body wave scattering and creating materials with a desired refraction coefficient 多体波散射和创造具有期望折射系数的材料
2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2009-10-30 DOI: 10.1109/DIPED.2009.5307280
A. Ramm
{"title":"Many-body wave scattering and creating materials with a desired refraction coefficient","authors":"A. Ramm","doi":"10.1109/DIPED.2009.5307280","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5307280","url":null,"abstract":"Many-body scattering problem is solved asymptotically when the size of the particles tends to zero and the number of the particles tends to infinity.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123346412","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
Acoustic echo-signal from a thin cylindrical shell with a slit 有狭缝的薄圆柱壳发出的回声信号
2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2009-10-30 DOI: 10.1109/DIPED.2009.5307272
O. Piddubniak, N. Piddubniak, Krzysztof Karnicki
{"title":"Acoustic echo-signal from a thin cylindrical shell with a slit","authors":"O. Piddubniak, N. Piddubniak, Krzysztof Karnicki","doi":"10.1109/DIPED.2009.5307272","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5307272","url":null,"abstract":"The two-dimensional problem of plane sound wave impulse scattering on the thin elastic circular cylindrical shell cracked along its infinite length. The shell is empty inside and surrounded by water from outside. The Kirchhoff - Love theory for description of elastic shell dynamic equilibrium is used. The shell defect influence on the echo-signal structure is investidated.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117308047","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
Boundary elements method for some triangular system of boundary integral equations 一类三角形边界积分方程组的边界元法
2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2009-10-30 DOI: 10.1109/DIPED.2009.5306941
S. Litynskyy, Yuriy Muzychuk
{"title":"Boundary elements method for some triangular system of boundary integral equations","authors":"S. Litynskyy, Yuriy Muzychuk","doi":"10.1109/DIPED.2009.5306941","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5306941","url":null,"abstract":"A system with infinite quantity of the boundary integral equations which is equivalent to the Dirichlet problem for some triangular system of elliptical equations and its weak formulation has been considered. A recurrent algorithm for solving such systems has been constructed. It involves finding the components of the solution using the boundary elements method step-by-step. The convergence orders for the collocation and the Galerkin methods have been compared.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126584885","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
Numerical algorithms of finding the branching lines and biffurcation points of solutions of nonlinear integral equation arising in the theory of antennas synthesis 天线综合理论中非线性积分方程解的分支线和分岔点求解的数值算法
2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2009-10-30 DOI: 10.1109/DIPED.2009.5306942
B. Podlevskyi
{"title":"Numerical algorithms of finding the branching lines and biffurcation points of solutions of nonlinear integral equation arising in the theory of antennas synthesis","authors":"B. Podlevskyi","doi":"10.1109/DIPED.2009.5306942","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5306942","url":null,"abstract":"The nonlinear synthesis problem of a plane equidistant antenna array according to the given requirements to an amplitude directivity pattern is considered. When finding the branching lines of solutions of nonlinear integral equations obtained as a result of solution of the synthesis problem, the two-parameter eigenvalue problems with spectral parameters analytically including in a kernel of the linearized integral operator are arisen. For such problems the numerical algorithms of finding the eigenvalue curves and the bifurcation points are considered. The numerical examples are presented.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123605411","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 novel compact, microstrip antenna with multifrequency operation 一种新颖紧凑的多频微带天线
2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2009-10-30 DOI: 10.1109/DIPED.2009.5306959
I. Sarkar, P. Sarkar, S. Chowdhury
{"title":"A novel compact, microstrip antenna with multifrequency operation","authors":"I. Sarkar, P. Sarkar, S. Chowdhury","doi":"10.1109/DIPED.2009.5306959","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5306959","url":null,"abstract":"A single layer, single feed, multi frequency, compact rectangular micro strip patch antenna is proposed. Resonant frequency has been reduced drastically by cutting unequal rectangular slots at the edge of the patch along with two tiny circular slots created inside the patch to improve return loss. Antenna size has been reduced by 64% with an increased frequency ratio (the ratio of second or higher resonant frequency to the first resonant frequency).","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125452764","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: 14
Modelling time reliability characteristics of composite electromagnetic systems 复合电磁系统时间可靠性特性建模
2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2009-10-30 DOI: 10.1109/DIPED.2009.5307270
A. Sydor
{"title":"Modelling time reliability characteristics of composite electromagnetic systems","authors":"A. Sydor","doi":"10.1109/DIPED.2009.5307270","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5307270","url":null,"abstract":"Main time reliability characteristics of composite electromagnetic systems are examined in this paper. Models are worked out for the duration of the system stay in each of it states in the case when the lifetime of ageing output elements is circumscribed by the Weibull distribution.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"10 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120837096","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
Acoustic wave scattering by the pre-fractal curvilinear rings system 前分形曲线环系统的声波散射
2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2009-10-30 DOI: 10.1109/DIPED.2009.5307263
G. Koshovy, A. G. Koshovy
{"title":"Acoustic wave scattering by the pre-fractal curvilinear rings system","authors":"G. Koshovy, A. G. Koshovy","doi":"10.1109/DIPED.2009.5307263","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5307263","url":null,"abstract":"The scattering problem of acoustic wave by pre-fractal curvilinear rings system is considered. Making use of the integral equation technique, three dimensional mathematical model is reduce to two dimensional one. Application of the mechanical cubature method to the case of the parabolic ring is analyzed.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130524222","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
The cellphone antenna test results 手机天线测试结果
2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2009-10-30 DOI: 10.1109/DIPED.2009.5306952
A. Karpov, V. Katrych, E. A. Antonenko, S. A. Yarmolchuc
{"title":"The cellphone antenna test results","authors":"A. Karpov, V. Katrych, E. A. Antonenko, S. A. Yarmolchuc","doi":"10.1109/DIPED.2009.5306952","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5306952","url":null,"abstract":"The results of experimental testing near reactive zone of the different kinds the cellphone antennas are presented. Dielectric coating parameters influence on cellphone antenna near reactive zone pattern is studied. The Specific Absorption Rate (SAR) is also measured, presented and discussed in this paper. The properties of electrically small antennas as a function their total length, geometry and effective volume are investigated. The radiation properties include resonant frequency; and quality factor Q is considered.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133817992","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
Asymptotic solution for a low contrast piezoelectric inclusion under the dynamic antiplane loading 动态反平面加载下低对比度压电夹杂的渐近解
2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2009-10-30 DOI: 10.1109/DIPED.2009.5307262
Y. Kunets’, R. V. Rabosh
{"title":"Asymptotic solution for a low contrast piezoelectric inclusion under the dynamic antiplane loading","authors":"Y. Kunets’, R. V. Rabosh","doi":"10.1109/DIPED.2009.5307262","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5307262","url":null,"abstract":"The antiplane dynamic problem for an elastic medium with a thin linear sharp edged piezoelectric inclusion is considered. Asymptotic behaviors of displacements in the tip of inclusion and in the far field are investigated for the case of low contrast inhomogeneity.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129509519","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
Inversion of soil's and immersed objects's electromagnetic parameters symultaneously 同时反演土体和浸没物的电磁参数
2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2009-10-30 DOI: 10.1109/DIPED.2009.5307273
D. Kakulia, K. Tavzarashvili, G. Chelidze, F. Shubitidze
{"title":"Inversion of soil's and immersed objects's electromagnetic parameters symultaneously","authors":"D. Kakulia, K. Tavzarashvili, G. Chelidze, F. Shubitidze","doi":"10.1109/DIPED.2009.5307273","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5307273","url":null,"abstract":"This paper presents results of numerical simulation and algorithm of simultaneous inversion of soil's and immersed object's electromagnetic parameters. Inversion is performed from data of electromagnetic induction (EMI) sensing, when all other geometric parameters of the problem are known. Discrimination procedure of subsurface objects such as landmines and unexploded ordnances (UXO) accomplishes higher accuracy when mentioned parameters are determined a priori. A specially, when interaction effects between object its surrounding media is significant and there is no exact information about materials of UXO produced in different time. Combining Method of Auxiliary Sources (MAS) with Gauss-Newton minimization algorithm, we developed optimization methodology that simultaneously inverts for the EM parameters of both the object and the surrounding medium.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133753560","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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