Издательство: "Trans Tech Publications Ltd."
| Название: | Changing the sizes of details made of aluminum alloys during microarc oxidation process | 
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| Автор ПГУ: | Олег Евгеньевич  Чуфистов Евгений Алексеевич | |
| Тематика: | техника | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Промышленность | |
| Дата издания: | 2021 | |
| Дата загрузки: | 14.11.2021 | |
| Название: | ELECTROPLATING OF INDIUM-CADMIUM AND TIN-CADMIUM ALLOY COATINGS |
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| Автор ПГУ: | Киреев Сергей Юрьевич Киреева Светлана Николаевна Фролов Анатолий Валерьевич Янгуразова Альфия Зякярьяевна Анопин Константин Дмитриевич | |
| Тематика: | химия | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Дата издания: | 2022 | |
| Дата загрузки: | 11.11.2022 | |
| Название: | Informational measures of the shape of the amoroso distributions for the research of dispersed materials |
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| Автор ПГУ: | Полосин Виталий Германович | |
| Тематика: | техника, физико-математические науки | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Журнал | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь, Промышленность, Преподаватель, Учащийся | |
| Аннотация: | For the particle size distribution function various forms of exponential models are used to construct models of the properties of dispersed substance. The most difficult stage of applied research is to determine the shape of the particle distribution model. For the particle size distribution function various forms of exponential models are used to construct models of the properties of dispersed substance. The most difficult stage of applied research is to determine the shape of the particle distribution model. The article proposes a uniform model for setting the interval of information uncertainty of non-symmetric particle size distributions. Based on the analysis of statistical and information uncertainty intervals, new shape coefficients of distribution models are constructed, these are the entropy coefficients for shifted and non-shifted distributions of the Amoroso family. Graphics of dependence of entropy coefficients of non-symmetrical distributions show that distributions wellknown are distinguish at small of the shapes parameters. Also it is illustrated for parameters of the form more than 2 that it is preferable to use the entropy coefficients for the unshifted distributions. The material contains also information measures for the well-known logarithmic normal distribution which is a limiting case of distribution Amorozo. © 2021 Trans Tech Publications Ltd, Switzerland. | |
| Дата издания: | 2021 | |
| Дата загрузки: | 15.11.2022 | |
| Название: | Management of the design parameters in optimal design problems |
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| Автор ПГУ: | Гришко Алексей Константинович | |
| Тематика: | физико-математические науки | |
| Вид ресурса: | электронное немультимедийное издание | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Дата издания: | 2019 | |
| Дата загрузки: | 23.11.2020 | |
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ИР получен из базы данных "Scopus" автоматически
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| Название: | Mapping of Beta Distribution for the Study of Dispersed Materials |
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| Автор ПГУ: | Полосин Виталий Германович | |
| Тематика: | техника, физико-математические науки | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Журнал | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь, Промышленность, Преподаватель, Учащийся | |
| Аннотация: | In the study of polydisperse materials, most of the experimental particle size distributions were obtained on bounded intervals. In these cases, it is also desirable to use bounded models with different shapes to simulate the results of studying polydisperse and powder materials. The beta distribution is often used to approximate results due to the fact that this distribution contains many forms for displaying realizations on a limited interval. With the development of computer technology, there has been an increased interest in the use of beta distribution in the modern practice of analyzing results. Meanwhile, there remains a limitation in the use of the beta distribution that is associated with the choice of distribution shape. The possibilities of using known shape measures for mapping beta distribution in this paper is discusses. On the example of the space of shape measure of kurtosis and skewness, the limited use of only probabilistic measures of shapes is illustrated. It is proposed to use the entropy coefficients as an additional informational parameter of the beta distribution shape. On the base of a features comparison of the entropy coefficients for biased and unbiased beta distributions, recommendations for their application are given. By using the example of beta distributions mapping in the space of asymmetry and the entropy coefficient, it is shown that the synergistic combination of probabilistic and informational measures of the shape allows expanding the possibilities of estimating the shape parameters beta distributions. Two methods to display the positions of realizations of beta distributions is proposed. There are trajectories on a constant ratio of shape and realizations position curve on equal values of one parameter. In particular, the features of the choice of beta distributions with negative skewness are discussed. | |
| Дата издания: | 2022 | |
| Дата загрузки: | 15.11.2022 | |
| Название: | Mapping of Beta Distribution for the Study of Dispersed Materials |
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| Автор ПГУ: | Полосин Виталий Германович | |
| Тематика: | техника, физико-математические науки, медицина | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Журнал | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь, Промышленность, Преподаватель, Учащийся | |
| Аннотация: | In the study of polydisperse materials, most of the experimental particle size distributions were obtained on bounded intervals. In these cases, it is also desirable to use bounded models with different shapes to simulate the results of studying polydisperse and powder materials. The beta distribution is often used to approximate results due to the fact that this distribution contains many forms for displaying realizations on a limited interval. With the development of computer technology, there has been an increased interest in the use of beta distribution in the modern practice of analyzing results. Meanwhile, there remains a limitation in the use of the beta distribution that is associated with the choice of distribution shape. The possibilities of using known shape measures for mapping beta distribution in this paper is discusses. On the example of the space of shape measure of kurtosis and skewness, the limited use of only probabilistic measures of shapes is illustrated. It is proposed to use the entropy coefficients as an additional informational parameter of the beta distribution shape. On the base of a features comparison of the entropy coefficients for biased and unbiased beta distributions, recommendations for their application are given. By using the example of beta distributions mapping in the space of asymmetry and the entropy coefficient, it is shown that the synergistic combination of probabilistic and informational measures of the shape allows expanding the possibilities of estimating the shape parameters beta distributions. Two methods to display the positions of realizations of beta distributions is proposed. There are trajectories on a constant ratio of shape and realizations position curve on equal values of one parameter. In particular, the features of the choice of beta distributions with negative skewness are discussed. © 2022 Trans Tech Publications Ltd, Switzerland. | |
| Дата издания: | 2022 | |
| Дата загрузки: | 15.11.2022 | |
| Название: | Methodology for the Selection of Technological Modes for the Synthesis of Transparent Conducting Oxides with Desired Properties |
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| Автор ПГУ: | Печерская Екатерина Анатольевна Зинченко Тимур Олегович Антипенко Владимир Викторович Волик Артём Вячеславович Вареник Юрий Александрович Шепелева Анастасия Эдуардовна | |
| Тематика: | техника | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Дата издания: | 2022 | |
| Дата загрузки: | 26.10.2022 | |
| Название: | Metrological Analysis of the Relationship Model Between the Properties of Piezoelectric Materials |
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| Автор ПГУ: | Печерская Екатерина Анатольевна Фимин Андрей Владимирович Вареник Юрий Александрович Волик Артём Вячеславович Левин Алексей Игоревич Абакумова Марина Александровна | |
| Тематика: | техника | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное | |
| Целевая аудитория: | Исследователь | |
| Дата издания: | 2022 | |
| Дата загрузки: | 26.10.2022 | |
| Название: | Providing cyclic robustness of bolted joints in case of assembly with implementation of anaerobic materials |
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| Автор ПГУ: | Воячек Игорь Иванович Кочетков Денис Викторович Зверовщиков Владимир Зиновьевич | |
| Тематика: | техника | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное, Производственно-практическое, Учебное | |
| Целевая аудитория: | Исследователь, Промышленность, Преподаватель, Учащийся | |
| Аннотация: | Stress concentration in thread roots and nonuniform load distribution along thread turn are the major disadvantages of bolted joints. Under changing cyclic loads on areas of high stress concentration crack formation and destruction of parts occur. In addition, the fretting corrosion processes activate in the areas of contact between thread turns. The purpose of the work is to increase rupture strength of bolted joints under the action of cyclic forces by decreasing stress concentration and reducing movements in contact zone of mating parts in case of assembly with implementation of anaerobic materials. Modelling of bearing strength of bolted joints is conducted according to finite element method, with theory of contact interaction between mating surfaces being used. The results of experimental research are given. Anaerobic materials which polymerize in area of thread contact of parts are used. It was established that assembly with implementation of anaerobic material allows unloading of thread turns because the part of external load is received by elastic layers of the polymerized anaerobic material. In this case the level and the concentration of stress in thread roots reduce, relative movements are decreased, the joint becomes more rigid and its cyclic robustness grows. | |
| Дата издания: | 2019 | |
| Дата загрузки: | 23.10.2019 | |
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ИР получен из базы данных "Scopus" автоматически
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| Название: | Rational provision of functional properties of interference fit joints in case of assembly with implementation of anaerobic materials |
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| Автор ПГУ: | Воячек Игорь Иванович Кочетков Денис Викторович Зверовщиков Владимир Зиновьевич | |
| Тематика: | техника | |
| Вид ресурса: | электронная копия бумажного издания | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Научное, Производственно-практическое, Учебное | |
| Целевая аудитория: | Исследователь, Промышленность, Преподаватель, Учащийся | |
| Аннотация: | One of the advanced ways of provision of functional properties of interference fit joints is to control contact interaction between mating parts, particularly by assembling with application of anaerobic materials polymerizing in contact area. The main advantage of using anaerobic materials is that this technology allows us to harden different parts of the joints selectively. The purpose of the work is to study the possibility of rational provision of functional properties of interference fit joints by selective hardening in case of assembling with the use of anaerobic materials. Modelling of bearing strength of interference fit joint is carried out according to finite element method, with theory of contact interaction between mating surfaces being used. The results of experimental research are given. Anaerobic material is used as a material for hardening of joints. It was discovered that exploitation load in form of torque or axial force is distributed along the length of interference fit joint rather nonuniformly. To decrease expenses it is necessary to harden those areas of joint which are located by the side of load application. The way of assembling of interference fit joints by pressing with selective use of hardening material is proposed. The technique of reliable identification of the necessity and the moment to apply anaerobic material while assembling parts was developed. As a result, functional properties of pressure joints are reached the most rational way. | |
| Дата издания: | 2019 | |
| Дата загрузки: | 23.10.2019 | |
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ИР получен из базы данных "Scopus" автоматически
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| Название: | TECHNOLOGY FOR PRODUCING FINE TUNGSTEN CARBIDE POWDERS |
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| Автор ПГУ: | Колмаков Константин Михайлович Зверовщиков Александр Евгеньевич | |
| Тематика: | техника | |
| Вид ресурса: | электронное немультимедийное издание | |
| Тип ресурса: | Статья | |
| Целевое назначение: | Производственно-практическое, Научное | |
| Целевая аудитория: | Промышленность, Исследователь, Промышленность | |
| Дата издания: | 2021 | |
| Дата загрузки: | 30.11.2021 | |