Pub Date : 2018-09-01DOI: 10.1109/diped.2018.8543285
{"title":"Acoustics and applications","authors":"","doi":"10.1109/diped.2018.8543285","DOIUrl":"https://doi.org/10.1109/diped.2018.8543285","url":null,"abstract":"","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125228110","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}
Pub Date : 2009-10-30DOI: 10.1109/DIPED.2009.5307260
O. Kravchyshyn
For the solution of mixed problem for a system of hyperbolic equations with variable coefficients which is modeling elastic disturbance propagation in an inhomogeneous strained solid the method of finite differences is used. The influence of inhomogeneous strained state on the velocity of the disturbance propagation is studied.
{"title":"Finite-difference modeling of elastic pulse propagation in non-uniformly strained solid","authors":"O. Kravchyshyn","doi":"10.1109/DIPED.2009.5307260","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5307260","url":null,"abstract":"For the solution of mixed problem for a system of hyperbolic equations with variable coefficients which is modeling elastic disturbance propagation in an inhomogeneous strained solid the method of finite differences is used. The influence of inhomogeneous strained state on the velocity of the disturbance propagation is studied.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"46 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":"127685218","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}
A numerical approach to the problem of wave scattering by many small particles is developed under the assumptions ka « 1, d»a, where a is the size of the particles and d is the distance between the neighboring particles. On the wavelength one may have many small particles. An impedance boundary conditions are assumed on the boundaries of small particles. The results of numerical simulation show good agreement with the theory. They open a way to numerical simulation of the method for creating materials with a desired refraction coefficient.
{"title":"Numerical solution of many-body wave scattering problem for small particles","authors":"Mykhaylo Andriychuk, A. Ramm","doi":"10.5772/24495","DOIUrl":"https://doi.org/10.5772/24495","url":null,"abstract":"A numerical approach to the problem of wave scattering by many small particles is developed under the assumptions ka « 1, d»a, where a is the size of the particles and d is the distance between the neighboring particles. On the wavelength one may have many small particles. An impedance boundary conditions are assumed on the boundaries of small particles. The results of numerical simulation show good agreement with the theory. They open a way to numerical simulation of the method for creating materials with a desired refraction coefficient.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"43 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":"132038785","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}
Pub Date : 2009-10-30DOI: 10.1109/DIPED.2009.5307269
V. R. Dzhala, L. I. Kapko
A method of microwave non-destructive testing of exfoliation in a dielectric plate is developed. The proposed method is based on multi-frequency sensing in 5-mm waveband and solving of the inverse problem to determine dielectric structure's thickness. Precision and resolution of the proposed method are evaluated.
{"title":"Microwave testing of exfoliation in a dielectric plate","authors":"V. R. Dzhala, L. I. Kapko","doi":"10.1109/DIPED.2009.5307269","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5307269","url":null,"abstract":"A method of microwave non-destructive testing of exfoliation in a dielectric plate is developed. The proposed method is based on multi-frequency sensing in 5-mm waveband and solving of the inverse problem to determine dielectric structure's thickness. Precision and resolution of the proposed method are evaluated.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"51 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":"129973235","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}
Pub Date : 2009-10-30DOI: 10.1109/DIPED.2009.5307243
M. Prishvin, R. Zaridze, G. Bit‐Babik, A. Faraone
Primary intent of this study is development of realistic vascular structure and simulation of the blood perfusion in capillary. It is needed for precise thermal analysis using the modified bio-heat equation to provide better prediction of thermal response of tissues exposed to RF energy then in conventional Pennes model [1]. Particularly, motivation of this paper is to use previously presented modified bioheat equation [2–4] for heat exchange and temperature rise simulation on a realistic human head model.
{"title":"Modified heat equation for thermal calculation on a realistic model","authors":"M. Prishvin, R. Zaridze, G. Bit‐Babik, A. Faraone","doi":"10.1109/DIPED.2009.5307243","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5307243","url":null,"abstract":"Primary intent of this study is development of realistic vascular structure and simulation of the blood perfusion in capillary. It is needed for precise thermal analysis using the modified bio-heat equation to provide better prediction of thermal response of tissues exposed to RF energy then in conventional Pennes model [1]. Particularly, motivation of this paper is to use previously presented modified bioheat equation [2–4] for heat exchange and temperature rise simulation on a realistic human head model.","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":"124396257","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}
Pub Date : 2009-10-30DOI: 10.1109/DIPED.2009.5306945
B. Katsenelenbaum
My teacher, the person who taught me the profession of scientist, was Mikhail Alexandrovich Leontovich. His teacher was Leonid Isaakovich Mandelstam. When studying at the Moscow University, I attended his physical seminar several times. Usually, “entire physical Moscow” met there. For the students this seminar was quite complicated. In fact, I understood very little from the reports, but resuming words of L.I. were, as a rule, understandable. Now I know that if the speaker understands what he made, then he can explain the essence of his work in a form clear to “almost anyone”. The technique can be complicated but the logic is always simple.
{"title":"My teacher M. A. Leontovich","authors":"B. Katsenelenbaum","doi":"10.1109/DIPED.2009.5306945","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5306945","url":null,"abstract":"My teacher, the person who taught me the profession of scientist, was Mikhail Alexandrovich Leontovich. His teacher was Leonid Isaakovich Mandelstam. When studying at the Moscow University, I attended his physical seminar several times. Usually, “entire physical Moscow” met there. For the students this seminar was quite complicated. In fact, I understood very little from the reports, but resuming words of L.I. were, as a rule, understandable. Now I know that if the speaker understands what he made, then he can explain the essence of his work in a form clear to “almost anyone”. The technique can be complicated but the logic is always simple.","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":"125860991","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}
Pub Date : 2009-10-30DOI: 10.1109/DIPED.2009.5307245
E. Yavolovskaya, I. Oganezova, T. Injgia, R. Jobava
A 3-phase DC-AC inverter system model is developed and noise produced by this non-linear system is investigated. Importance of parasitic elements consideration in computational model is shown for radiated emission test. Modeling of the system is performed using multi transmission line theory. Comparison of simulation results with measurements is done.
{"title":"Accurate modeling of automotive DC-AC inverter systems for radiated emission problems","authors":"E. Yavolovskaya, I. Oganezova, T. Injgia, R. Jobava","doi":"10.1109/DIPED.2009.5307245","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5307245","url":null,"abstract":"A 3-phase DC-AC inverter system model is developed and noise produced by this non-linear system is investigated. Importance of parasitic elements consideration in computational model is shown for radiated emission test. Modeling of the system is performed using multi transmission line theory. Comparison of simulation results with measurements is done.","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":"129242012","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}
Pub Date : 2009-10-30DOI: 10.1109/DIPED.2009.5306961
B. Partsvania, L. Shoshiashvili, Z. Modebadze, T. Surguladze
Influence of the EMF MF on the single Action potentials parameters and neuron synaptic habituation was investigated. It is shown, that AP parameters exert reduction after applying of the ELF EMF. Neuron synaptic excitability is increased due to applying ELF EMF.
{"title":"Different effects of the extremely low frequency magnetic fields on neurons action potential and synaptic habituation","authors":"B. Partsvania, L. Shoshiashvili, Z. Modebadze, T. Surguladze","doi":"10.1109/DIPED.2009.5306961","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5306961","url":null,"abstract":"Influence of the EMF MF on the single Action potentials parameters and neuron synaptic habituation was investigated. It is shown, that AP parameters exert reduction after applying of the ELF EMF. Neuron synaptic excitability is increased due to applying ELF EMF.","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":"121013452","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}
Pub Date : 2009-10-30DOI: 10.1109/DIPED.2009.5306951
B. Gokce, C. Karakuş, F. Akleman
In this paper a novel feeding technique is introduced in order to enhance the required bandwidth and reduce the size of a microstrip patch antenna which radiates efficiently in 1900–2200 MHz band for UMTS. Unlike other well-known feeding methods, rectangular radiating patch, which is designed as antenna structure, is fed by coupling of a planar conductive part which shows characteristics of a monopole antenna alone. The designed antenna has 18.3 % (1.88– 2.26 GHz) impedance bandwidth which has the quality of covering UMTS band.
{"title":"Microstrip patch antenna design for UMTS handsets","authors":"B. Gokce, C. Karakuş, F. Akleman","doi":"10.1109/DIPED.2009.5306951","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5306951","url":null,"abstract":"In this paper a novel feeding technique is introduced in order to enhance the required bandwidth and reduce the size of a microstrip patch antenna which radiates efficiently in 1900–2200 MHz band for UMTS. Unlike other well-known feeding methods, rectangular radiating patch, which is designed as antenna structure, is fed by coupling of a planar conductive part which shows characteristics of a monopole antenna alone. The designed antenna has 18.3 % (1.88– 2.26 GHz) impedance bandwidth which has the quality of covering UMTS band.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"41 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":"114252208","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}
Pub Date : 2009-10-30DOI: 10.1109/DIPED.2009.5306966
G. Koshovy
The problem of electromagnetic waves propagation in pre-fractal system of micro strip lines has been formulated and solved for quasi-transversal waves. The direct numerical method of mechanical quadratures has been presented to find the main characteristics of the waves in the said systems.
{"title":"Quasi-T-waves in pre-fractal system of MSL","authors":"G. Koshovy","doi":"10.1109/DIPED.2009.5306966","DOIUrl":"https://doi.org/10.1109/DIPED.2009.5306966","url":null,"abstract":"The problem of electromagnetic waves propagation in pre-fractal system of micro strip lines has been formulated and solved for quasi-transversal waves. The direct numerical method of mechanical quadratures has been presented to find the main characteristics of the waves in the said systems.","PeriodicalId":404875,"journal":{"name":"2009 International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"15 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":"121343334","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}
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