Pub Date : 2018-09-01DOI: 10.1109/DIPED.2018.8543273
V. Chekurin, O. Khymko
a telegraph-type equation, which describes in some approximation propagation of small pressure disturbances in moving gas of long pipeline, has been considered. The Cauchy problem for it has been solved in quadratures with the use of the Riemann method.
考虑了一种近似描述长管道流动气体中微小压力扰动传播的电报式方程。用黎曼方法求解了它的柯西问题。
{"title":"Waves of pressure in gas pipeline: a telegraph-type model","authors":"V. Chekurin, O. Khymko","doi":"10.1109/DIPED.2018.8543273","DOIUrl":"https://doi.org/10.1109/DIPED.2018.8543273","url":null,"abstract":"a telegraph-type equation, which describes in some approximation propagation of small pressure disturbances in moving gas of long pipeline, has been considered. The Cauchy problem for it has been solved in quadratures with the use of the Riemann method.","PeriodicalId":146873,"journal":{"name":"2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"97 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":"123140294","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 : 2018-09-01DOI: 10.1109/DIPED.2018.8543274
M. Hatipoğlu, F. Dikmen, Emrah Sever, Y. Tuchkin
The regularization of the well-known recursive T-Matrix method for 2D monochromatic wave scattering problem from multiple circular dielectric cylinder system is elaborated. It is the numerical stabilization of the recursive T-matrix method composed in terms of isolated T-matrices of each scatterer. Numerical results show that it is much safer to proceed with the regularized recurrence operations to get accurate results computer precision can provide by ensuring the reliability of the solution.
{"title":"Numerical Stabilization of Recursive T Matrix Method in 2D for TM-z Scattering from Circular Boundaries","authors":"M. Hatipoğlu, F. Dikmen, Emrah Sever, Y. Tuchkin","doi":"10.1109/DIPED.2018.8543274","DOIUrl":"https://doi.org/10.1109/DIPED.2018.8543274","url":null,"abstract":"The regularization of the well-known recursive T-Matrix method for 2D monochromatic wave scattering problem from multiple circular dielectric cylinder system is elaborated. It is the numerical stabilization of the recursive T-matrix method composed in terms of isolated T-matrices of each scatterer. Numerical results show that it is much safer to proceed with the regularized recurrence operations to get accurate results computer precision can provide by ensuring the reliability of the solution.","PeriodicalId":146873,"journal":{"name":"2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"46 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":"131928525","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 : 2018-09-01DOI: 10.1109/DIPED.2018.8543317
I. Shamatava, Gregory S. Schultz, F. Shubitidze
In this paper classification performances of advanced electromagnetic induction (EMI) models are evaluated at Fort Ord, CA live UXO site. The EMI data sets are collected using a next-generation EMI system, such as MetalMapper, in the cued mode. The limitation and valid range of application of advanced models: such as the Ortho Normalized Volume Magnetic Sources (ONVMS), Joint Diagonalization and Differential Evolution, are demonstrated for subsurface targets classification at a Live Site by taking into account the number of objects in a close proximity to the sensor, the size and material heterogeneity of those targets, and the local geologic conditions. The comparisons between classification results achieved by our team, using the advanced classification approach, and other teams are demonstrated.
{"title":"Accessing UXO Classification Technologies at a Challenging Live-UXO Site","authors":"I. Shamatava, Gregory S. Schultz, F. Shubitidze","doi":"10.1109/DIPED.2018.8543317","DOIUrl":"https://doi.org/10.1109/DIPED.2018.8543317","url":null,"abstract":"In this paper classification performances of advanced electromagnetic induction (EMI) models are evaluated at Fort Ord, CA live UXO site. The EMI data sets are collected using a next-generation EMI system, such as MetalMapper, in the cued mode. The limitation and valid range of application of advanced models: such as the Ortho Normalized Volume Magnetic Sources (ONVMS), Joint Diagonalization and Differential Evolution, are demonstrated for subsurface targets classification at a Live Site by taking into account the number of objects in a close proximity to the sensor, the size and material heterogeneity of those targets, and the local geologic conditions. The comparisons between classification results achieved by our team, using the advanced classification approach, and other teams are demonstrated.","PeriodicalId":146873,"journal":{"name":"2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"143 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":"121635783","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 : 2018-09-01DOI: 10.1109/DIPED.2018.8543125
K. Sabanci, E. Yiğit, Deniz Ustun, A. Toktas, Muhammet Fatih Aslan
Because of increasing the use of smartphones, it has become easier to identify location of any user. The most popular technique for outdoor positioning is the GPS signal which is commonly used in smartphones and transport vehicles. However, position detection can not be achieved indoor with GPS. Therefore, in this study, a location determination based on WiFi signal strengths was performed indoor where user could not correctly receive the GPS signal. The data includes the strengths of seven WiFi signals that provide information about four different rooms. Based on the WiFi signal strength values coming from seven different sources to smartphone, the position of the user at which room can be determined. In this study, classification was achieved for the determination of the indoor room. Six different Machine Learning (ML) methods were applied to the classification. These methods are Artificial Neural Networks (ANN), K-Nearest Neighbors (k-NN), Decision Trees (DT), Naive Bayes (NB) Classifier, Extreme Learning Machine (ELM) and Support Vector Machines (SVM). Successful results were obtained from all the methods and these results were compared with each other.
{"title":"WiFi Based Indoor Localization: Application and Comparison of Machine Learning Algorithms","authors":"K. Sabanci, E. Yiğit, Deniz Ustun, A. Toktas, Muhammet Fatih Aslan","doi":"10.1109/DIPED.2018.8543125","DOIUrl":"https://doi.org/10.1109/DIPED.2018.8543125","url":null,"abstract":"Because of increasing the use of smartphones, it has become easier to identify location of any user. The most popular technique for outdoor positioning is the GPS signal which is commonly used in smartphones and transport vehicles. However, position detection can not be achieved indoor with GPS. Therefore, in this study, a location determination based on WiFi signal strengths was performed indoor where user could not correctly receive the GPS signal. The data includes the strengths of seven WiFi signals that provide information about four different rooms. Based on the WiFi signal strength values coming from seven different sources to smartphone, the position of the user at which room can be determined. In this study, classification was achieved for the determination of the indoor room. Six different Machine Learning (ML) methods were applied to the classification. These methods are Artificial Neural Networks (ANN), K-Nearest Neighbors (k-NN), Decision Trees (DT), Naive Bayes (NB) Classifier, Extreme Learning Machine (ELM) and Support Vector Machines (SVM). Successful results were obtained from all the methods and these results were compared with each other.","PeriodicalId":146873,"journal":{"name":"2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"28 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":"125386317","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 : 2018-09-01DOI: 10.1109/DIPED.2018.8543321
L. Gheonjian, T. Paatashvili, M. Oragvelidze, P. Tsotskolauri
This paper represents the laboratory model supporting the scientific concept of Tbilisi State University ELF monitoring net creation initiative. The project concerns the consistent development of a dense ELF network for Caucasus and Anatolian-Iranian Plateau tectonic faults system to observe the critical state of some physical variables before and after of accumulated tectonic energy discharge in earthquake form. The main characteristics of the Earth’s seismic process show that earthquakes should be attributed to phenomena of self-organizing criticality. In accordance with this representation, an earthquake, or the energy discharge of fault, is an unpredictable phenomenon determined by entire system development. But luni-solar tension modulation synchronizes the triggering moments. Earthquake statistics of Caucasus demonstrates that discharge favorable time intervals are computable. One can try to predict earthquakes occurrence probability and power if monitors the evolution and critical state of some physical variables of the system. This indicates the existence of a class of phenomena of self-organized criticality with parametric modulation of criticality conditions. This class of phenomena should be investigated on the laboratory model. This model can serve as a basis for creating an idea of partial predictability of self-criticality. We represent the model and the results of criticality parametric modulation experiments.
{"title":"Tbilisi State University Extremely Low Frequency Radiation Research Net (ELFTSU Net): Earthquake Triggering and Synchronization Concept for the Net Operation","authors":"L. Gheonjian, T. Paatashvili, M. Oragvelidze, P. Tsotskolauri","doi":"10.1109/DIPED.2018.8543321","DOIUrl":"https://doi.org/10.1109/DIPED.2018.8543321","url":null,"abstract":"This paper represents the laboratory model supporting the scientific concept of Tbilisi State University ELF monitoring net creation initiative. The project concerns the consistent development of a dense ELF network for Caucasus and Anatolian-Iranian Plateau tectonic faults system to observe the critical state of some physical variables before and after of accumulated tectonic energy discharge in earthquake form. The main characteristics of the Earth’s seismic process show that earthquakes should be attributed to phenomena of self-organizing criticality. In accordance with this representation, an earthquake, or the energy discharge of fault, is an unpredictable phenomenon determined by entire system development. But luni-solar tension modulation synchronizes the triggering moments. Earthquake statistics of Caucasus demonstrates that discharge favorable time intervals are computable. One can try to predict earthquakes occurrence probability and power if monitors the evolution and critical state of some physical variables of the system. This indicates the existence of a class of phenomena of self-organized criticality with parametric modulation of criticality conditions. This class of phenomena should be investigated on the laboratory model. This model can serve as a basis for creating an idea of partial predictability of self-criticality. We represent the model and the results of criticality parametric modulation experiments.","PeriodicalId":146873,"journal":{"name":"2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"35 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":"125393586","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 : 2018-09-01DOI: 10.1109/DIPED.2018.8543281
F. Bogdanov, L. Svanidze, R. Jobava
This paper develops a MoM-based full-wave solution to the scattering problem on arbitrary multi-region composite structure with various type junctions between dielectric and conducting regions. A special attention is paid to the treatment of basis functions (BF) on material junctions. In contrast to existing works, the standard RWG BF are supposed to be used and grouped according to the boundary conditions on contiguous interfaces. The proposed approach has been validated by comparison of the simulated results with those obtained by discontinuous Galerkin time domain (DGTD) method.
{"title":"MoM Solution to Scattering Problem on Multi-Region Composite Structures with Various Type Material Junctions","authors":"F. Bogdanov, L. Svanidze, R. Jobava","doi":"10.1109/DIPED.2018.8543281","DOIUrl":"https://doi.org/10.1109/DIPED.2018.8543281","url":null,"abstract":"This paper develops a MoM-based full-wave solution to the scattering problem on arbitrary multi-region composite structure with various type junctions between dielectric and conducting regions. A special attention is paid to the treatment of basis functions (BF) on material junctions. In contrast to existing works, the standard RWG BF are supposed to be used and grouped according to the boundary conditions on contiguous interfaces. The proposed approach has been validated by comparison of the simulated results with those obtained by discontinuous Galerkin time domain (DGTD) method.","PeriodicalId":146873,"journal":{"name":"2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"23 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":"125154165","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 : 2018-09-01DOI: 10.1109/diped.2018.8543300
{"title":"DIPED 2018 Committees","authors":"","doi":"10.1109/diped.2018.8543300","DOIUrl":"https://doi.org/10.1109/diped.2018.8543300","url":null,"abstract":"","PeriodicalId":146873,"journal":{"name":"2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"26 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":"116752226","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 : 2018-09-01DOI: 10.1109/DIPED.2018.8543299
Deniz Ustun, A. Toktas, K. Sabanci, E. Yiğit, Feyza Toktas
In this study, an ultra-wide band (UWB) antenna having band-notched operation for WLAN application has been designed. To model the antenna design, HyperLynx® 3D electromagnetic simulation program is used. The UWB antenna operates between the frequencies of 2.5 GHz and 11 GHz. To obtain the ideal rejecting characteristic over the desired frequency band, a Y-shaped strip is added into the full UWB antenna radiator. Thus, a frequency rejection response is obtained in band range of 5.0 GHz and 6.0 GHz for WLAN application. By changing the size of the Y-shaped strip, not only center frequency for interval 5 GHz and 6 GHz but also rejected bandwidth can be readily shifted. As a result, A suitable notch characteristic is achieved for desired band thanks to optimized strip geometry.
{"title":"An UWB Antenna Design Having Band-Reject Characteristic by Y-Shaped Strip","authors":"Deniz Ustun, A. Toktas, K. Sabanci, E. Yiğit, Feyza Toktas","doi":"10.1109/DIPED.2018.8543299","DOIUrl":"https://doi.org/10.1109/DIPED.2018.8543299","url":null,"abstract":"In this study, an ultra-wide band (UWB) antenna having band-notched operation for WLAN application has been designed. To model the antenna design, HyperLynx® 3D electromagnetic simulation program is used. The UWB antenna operates between the frequencies of 2.5 GHz and 11 GHz. To obtain the ideal rejecting characteristic over the desired frequency band, a Y-shaped strip is added into the full UWB antenna radiator. Thus, a frequency rejection response is obtained in band range of 5.0 GHz and 6.0 GHz for WLAN application. By changing the size of the Y-shaped strip, not only center frequency for interval 5 GHz and 6 GHz but also rejected bandwidth can be readily shifted. As a result, A suitable notch characteristic is achieved for desired band thanks to optimized strip geometry.","PeriodicalId":146873,"journal":{"name":"2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"31 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":"129720061","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 : 2018-09-01DOI: 10.1109/DIPED.2018.8543318
Armien John I. Samson
We study the dynamics of charge transport under weak inversion. In this regime, uncertainties in the charge distribution and propagation are dominant. A couple of assumptions were made for the white noises present during weak inversion which include the probability function following a Markov process and can be represented as having non-Gaussian properties as the charges accumulating at the metal due to the presence of the gate electrons follow a non-Gaussian distribution. The system is be analyzed using the Levy-Khintchine formula which works when the source of perturbation to the system behaves in non-uniform manner. The probabilistic particle fluxes are obtained for this type of white noises in the presence and in the absence of any external influences by analyzing the characteristic function of the noisy source and finding the solutions of the equivalent Fokker-Planck equation.
{"title":"Solutions to Fokker-Planck Equations for Non-Gaussian White Noise in FET Undergoing Weak Inversion","authors":"Armien John I. Samson","doi":"10.1109/DIPED.2018.8543318","DOIUrl":"https://doi.org/10.1109/DIPED.2018.8543318","url":null,"abstract":"We study the dynamics of charge transport under weak inversion. In this regime, uncertainties in the charge distribution and propagation are dominant. A couple of assumptions were made for the white noises present during weak inversion which include the probability function following a Markov process and can be represented as having non-Gaussian properties as the charges accumulating at the metal due to the presence of the gate electrons follow a non-Gaussian distribution. The system is be analyzed using the Levy-Khintchine formula which works when the source of perturbation to the system behaves in non-uniform manner. The probabilistic particle fluxes are obtained for this type of white noises in the presence and in the absence of any external influences by analyzing the characteristic function of the noisy source and finding the solutions of the equivalent Fokker-Planck equation.","PeriodicalId":146873,"journal":{"name":"2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"44 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":"126996115","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 : 2018-09-01DOI: 10.1109/DIPED.2018.8543322
E. Veliev, K. Karaçuha, Ertucrul Karaguha
Earlier, we considered the use of fractional derivative approach to solve two dimensional diffraction problems with incoming wave as plane wave or cylindrical wave on an impedance strip. By introducing the fractional boundary condition (FBC), the "fractional strip" which is subject to FBC is solved. FBC acts as an intermediate case between perfect electric conductor and perfect magnetic conductor. The Cylindrical wave diffraction problem from a strip described by FBC is formulated and solved using new method. While analyzing the scattering properties of fractional strip, new features are observed. When fractional order (FO) equals to 0.5, the problem can be found in analytical form for any value of wavenumber. Here, FO is taken 0.5 and the study is done by putting line source at far field and having analytical solution by using asymptotic approach.
{"title":"Scattering of a Cylindrical Wave from an Impedance Strip by Using the Method of Fractional Derivatives","authors":"E. Veliev, K. Karaçuha, Ertucrul Karaguha","doi":"10.1109/DIPED.2018.8543322","DOIUrl":"https://doi.org/10.1109/DIPED.2018.8543322","url":null,"abstract":"Earlier, we considered the use of fractional derivative approach to solve two dimensional diffraction problems with incoming wave as plane wave or cylindrical wave on an impedance strip. By introducing the fractional boundary condition (FBC), the \"fractional strip\" which is subject to FBC is solved. FBC acts as an intermediate case between perfect electric conductor and perfect magnetic conductor. The Cylindrical wave diffraction problem from a strip described by FBC is formulated and solved using new method. While analyzing the scattering properties of fractional strip, new features are observed. When fractional order (FO) equals to 0.5, the problem can be found in analytical form for any value of wavenumber. Here, FO is taken 0.5 and the study is done by putting line source at far field and having analytical solution by using asymptotic approach.","PeriodicalId":146873,"journal":{"name":"2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED)","volume":"233 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":"123194960","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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