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Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki最新文献

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On an approximate method for solving the inverse problem of heat transfer 求解传热反问题的近似方法
Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki Pub Date : 2023-09-20 DOI: 10.21685/2072-3040-2023-2-4
I. Boykov, V. Ryazantsev
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引用次数: 0
Charge radii of atomic nuclei and shell effects 原子核的电荷半径和壳层效应
Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki Pub Date : 2023-05-20 DOI: 10.21685/2072-3040-2022-1-6
M. Chushnyakova, I. Gontchar, E. V. Kulik
{"title":"Charge radii of atomic nuclei and shell effects","authors":"M. Chushnyakova, I. Gontchar, E. V. Kulik","doi":"10.21685/2072-3040-2022-1-6","DOIUrl":"https://doi.org/10.21685/2072-3040-2022-1-6","url":null,"abstract":"In the present work, we study the experimental data on the root mean square charge radii of the spherical atomic nuclei. The purpose of this analysis is to clarify what is the manifestation of the neutron shells in the considered observable and to find regularities in the behavior of the charge radii when a shell neutron is crossed. As the result, we have found manifestations of the shells N_sh=8,28,50 and 82. It turns out that the well-known shells with the neutron numbers 20 and 126 do not show up. The present analysis is performed by means of the relative charge radius x(N,N_sh,Z). This value is equal to the charge radius of a given isotope over the charge radius of the isotope of the given element with the closed neutron shell. It is shown that the values of x form groups corresponding to different values of N_sh. Prediction for unknown charge radius of sulfur-30 has been made.","PeriodicalId":33989,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85205391","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
Stability of solutions for systems of delayed parabolic equations 时滞抛物型方程组解的稳定性
Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki Pub Date : 2023-01-01 DOI: 10.21685/2072-3040-2023-1-6
I. Boykov
{"title":"Stability of solutions for systems of delayed parabolic equations","authors":"I. Boykov","doi":"10.21685/2072-3040-2023-1-6","DOIUrl":"https://doi.org/10.21685/2072-3040-2023-1-6","url":null,"abstract":"","PeriodicalId":33989,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88282448","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
Electronic beam control and frequency scanning of graphene antenna arrays in the terahertz and far infrared frequency ranges 石墨烯天线阵列在太赫兹和远红外频率范围内的电子束控制和频率扫描
Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki Pub Date : 2023-01-01 DOI: 10.21685/2072-3040-2023-1-9
N. Nefedov, G. Makeeva
{"title":"Electronic beam control and frequency scanning of graphene antenna arrays in the terahertz and far infrared frequency ranges","authors":"N. Nefedov, G. Makeeva","doi":"10.21685/2072-3040-2023-1-9","DOIUrl":"https://doi.org/10.21685/2072-3040-2023-1-9","url":null,"abstract":"","PeriodicalId":33989,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79653389","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
Seebeck, Peltier and Thomson coefficient quanta in nanoscale conductors 纳米级导体中的塞贝克、珀尔帖和汤姆森系数量子
Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki Pub Date : 2023-01-01 DOI: 10.21685/2072-3040-2023-2-6
R. Brazhe, Alena Grishina
{"title":"Seebeck, Peltier and Thomson coefficient quanta in nanoscale conductors","authors":"R. Brazhe, Alena Grishina","doi":"10.21685/2072-3040-2023-2-6","DOIUrl":"https://doi.org/10.21685/2072-3040-2023-2-6","url":null,"abstract":"","PeriodicalId":33989,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89276486","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
On the choice of the initial approximation in the numerical solution of parametric optimization problems 参数优化问题数值解中初始近似的选择
Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki Pub Date : 2023-01-01 DOI: 10.21685/2072-3040-2023-1-3
I. Egorov, G. Kretinin, A. Kretinin
{"title":"On the choice of the initial approximation in the numerical solution of parametric optimization problems","authors":"I. Egorov, G. Kretinin, A. Kretinin","doi":"10.21685/2072-3040-2023-1-3","DOIUrl":"https://doi.org/10.21685/2072-3040-2023-1-3","url":null,"abstract":"","PeriodicalId":33989,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73600506","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
A problem of reconstruction of inhomogeneity parameters of a two-dimension body by the measurement results of acoustic field 利用声场测量结果重建二维物体非均匀性参数的问题
Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki Pub Date : 2023-01-01 DOI: 10.21685/2072-3040-2023-2-2
M. Medvedik, Oleg Kondyrev
{"title":"A problem of reconstruction of inhomogeneity parameters of a two-dimension body by the measurement results of acoustic field","authors":"M. Medvedik, Oleg Kondyrev","doi":"10.21685/2072-3040-2023-2-2","DOIUrl":"https://doi.org/10.21685/2072-3040-2023-2-2","url":null,"abstract":"","PeriodicalId":33989,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82023434","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
Quantum-dimensional insulators Quantum-dimensional绝缘体
Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki Pub Date : 2023-01-01 DOI: 10.21685/2072-3040-2023-1-10
R. Brazhe
{"title":"Quantum-dimensional insulators","authors":"R. Brazhe","doi":"10.21685/2072-3040-2023-1-10","DOIUrl":"https://doi.org/10.21685/2072-3040-2023-1-10","url":null,"abstract":"","PeriodicalId":33989,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki","volume":"116 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89020055","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 propagation of the TM-wave in a flat semi-open dielectric layer with nonlocal nonlinearity tm波在具有非局部非线性的平坦半开介质层中的传播
Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki Pub Date : 2023-01-01 DOI: 10.21685/2072-3040-2023-1-4
Yuri G. Smirnov, S. Tikhov
{"title":"The propagation of the TM-wave in a flat semi-open dielectric layer with nonlocal nonlinearity","authors":"Yuri G. Smirnov, S. Tikhov","doi":"10.21685/2072-3040-2023-1-4","DOIUrl":"https://doi.org/10.21685/2072-3040-2023-1-4","url":null,"abstract":"","PeriodicalId":33989,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90078048","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 ratio of electron and phonon thermal conductivity in nanoscale conductors 纳米级导体中电子和声子导热率的比值
Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki Pub Date : 2023-01-01 DOI: 10.21685/2072-3040-2023-2-7
R. Brazhe
{"title":"The ratio of electron and phonon thermal conductivity in nanoscale conductors","authors":"R. Brazhe","doi":"10.21685/2072-3040-2023-2-7","DOIUrl":"https://doi.org/10.21685/2072-3040-2023-2-7","url":null,"abstract":"","PeriodicalId":33989,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Povolzhskii region Fizikomatematicheskie nauki","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85993486","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
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