{"title":"Resolution of Linear-quadratic Problems in a Discrete-continuous Format with External Actions","authors":"V. A. Srochko, V. G. Antonik","doi":"10.26516/1997-7670.2023.45.24","DOIUrl":"https://doi.org/10.26516/1997-7670.2023.45.24","url":null,"abstract":"Two linear-quadratic problems are considered on the set of piecewise-constant controls. The first problem contains a discrete perturbation on the right side of the controlled system and uncertain parameters in a quadratic functional with sign-indefinite matrices. Its solution is obtained by the guaranteed result rule and is implemented in the form of a finite-dimensional minimax problem. There are obtained conditions for the parameters that convert the objective function to a convex-concave structure and give the possibility of an effective solving of the problem. These are linear inequalities containing extreme eigenvalues of symmetric matrices. The second problem is related to the functional in the discrete variant, which is defined as the deviation of the phase trajectory from consecutive time realizations of the external influence. It gives the opportunity of the step by step searching of the extremmum at each node point of the time interval. Local problems can be effectively solved in a finite number of iterations.","PeriodicalId":42592,"journal":{"name":"Bulletin of Irkutsk State University-Series Mathematics","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135445262","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}
{"title":"Assessment of Tourism and Climate Potential of the Territory of Western Kazakhstan","authors":"S. V. Pashkov, I. A. Sedelnikov","doi":"10.26516/2073-3402.2023.45.95","DOIUrl":"https://doi.org/10.26516/2073-3402.2023.45.95","url":null,"abstract":"The article presents the results of assessing the favorableness of bioclimatic conditions as an important element of the tourism potential of the territory of Western Kazakhstan. Calculations of the tourist climate index (TCI) and analysis of its spatial and temporal variability based on data from representative weather stations for 1976–2020 have been performed. It has been determined that the territory of Western Kazakhstan is homogeneous in terms of the average annual TCI, but is extremely variable in terms of the intra-annual course of the index: from an “extremely unfavorable” level in winter months to a “comfortable” level in summer. The differentiation of tourist activities types in Western Kazakhstan is presented, taking into account the favorable weather and climatic conditions. Based on territorial studiesand in connection with them, it was found that TCI in its current form is not entirely correct for arid and semi-arid territories with high average daily temperatures, and in the light of modern trends in increasing the average global surface temperature, this index needs to be updated.","PeriodicalId":42592,"journal":{"name":"Bulletin of Irkutsk State University-Series Mathematics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135957873","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}
{"title":"TO THE QUESTION OF SOCIAL INTELLIGENCE","authors":"T. Kozlova, Irina N. Nesterova","doi":"10.47438/2309-7078_2023_1_20","DOIUrl":"https://doi.org/10.47438/2309-7078_2023_1_20","url":null,"abstract":"","PeriodicalId":42592,"journal":{"name":"Bulletin of Irkutsk State University-Series Mathematics","volume":"44 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80960626","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}
{"title":"MODERN RESEARCHERS ABOUT THE PHENOMEN ON OF THE SPIRITUAL AND MORAL DEVELOPMENT OF A MAN (Review of the book “Spiritual and Moral Development of a Man. Conversations with Teachers and Students”)","authors":"Marina A. Miler","doi":"10.47438/2309-7078_2023_1_105","DOIUrl":"https://doi.org/10.47438/2309-7078_2023_1_105","url":null,"abstract":"","PeriodicalId":42592,"journal":{"name":"Bulletin of Irkutsk State University-Series Mathematics","volume":"343 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79593048","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}
{"title":"THE DRY LAW OF 1914 AND THE ATTITUDE TO IT IN THE PROVINCE (BY THE MATERIALS OF THE KOSTROMA PROVINCE)","authors":"V. A. Kolesnikov","doi":"10.47438/2309-7078_2023_1_151","DOIUrl":"https://doi.org/10.47438/2309-7078_2023_1_151","url":null,"abstract":"","PeriodicalId":42592,"journal":{"name":"Bulletin of Irkutsk State University-Series Mathematics","volume":"40 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89403056","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}
Ilvira I. Antonova, D. Ayupov, Y. Khakimullin, V. Khozin
{"title":"Bitumen emulsions for waterproof and roof coverings","authors":"Ilvira I. Antonova, D. Ayupov, Y. Khakimullin, V. Khozin","doi":"10.52409/20731523_2023_1_6","DOIUrl":"https://doi.org/10.52409/20731523_2023_1_6","url":null,"abstract":"","PeriodicalId":42592,"journal":{"name":"Bulletin of Irkutsk State University-Series Mathematics","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83034810","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}
{"title":"ON THE ISSUE OF “WHITE SPOTS” IN THE BIOGRAPHYOF CHIEF MARSHAL OF ARTILLERY M.I. NEDELIN","authors":"Ekaterina M. Muminova","doi":"10.47438/2309-7078_2023_1_182","DOIUrl":"https://doi.org/10.47438/2309-7078_2023_1_182","url":null,"abstract":"","PeriodicalId":42592,"journal":{"name":"Bulletin of Irkutsk State University-Series Mathematics","volume":"79 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79249763","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}
{"title":"COMBAT OPERATIONS OF THE 17TH AIR ARMY IN THE MIDDLE DON OFFENSIVE OPERATION IN 16 - 30 DECEMBER, 1942 (“SMALL SATURN”)","authors":"G. P. Ivanova, Evgeniy А. Shendrikov","doi":"10.47438/2309-7078_2023_1_162","DOIUrl":"https://doi.org/10.47438/2309-7078_2023_1_162","url":null,"abstract":"","PeriodicalId":42592,"journal":{"name":"Bulletin of Irkutsk State University-Series Mathematics","volume":"40 3","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72456717","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}
{"title":"INTEGRATION OF PEDAGOGICAL AND INNOVATIVE MUSEUM TECHNOLOGIES IN TO THE EDUCATIONAL PROCESS OF GENERAL AND ADDITIONAL EDUCATION INSTITUTIONS","authors":"M. A. Krivtsova, Irina R. Seligeeva","doi":"10.47438/2309-7078_2023_1_33","DOIUrl":"https://doi.org/10.47438/2309-7078_2023_1_33","url":null,"abstract":"","PeriodicalId":42592,"journal":{"name":"Bulletin of Irkutsk State University-Series Mathematics","volume":"7 39 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85591602","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}
{"title":"Brick decoration of religious buildings of Kazan in the second third of the XVIII - early XX centuries","authors":"Safiya S. Mouzeeva, M.Sh. Fazleev","doi":"10.52409/20731523_2023_1_104","DOIUrl":"https://doi.org/10.52409/20731523_2023_1_104","url":null,"abstract":"","PeriodicalId":42592,"journal":{"name":"Bulletin of Irkutsk State University-Series Mathematics","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76080038","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}