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Статті в журналах з теми "Модель оцінки надійності"
Звершховский, Игорь Всеволодович, Мария Васильевна Зирка, Владимир Валериевич Петушков та Оксана Борисовна Кучинськая. "Модель надежности системы управления подготовкой и пуском пусковых установок ракетных комплексов". Озброєння та військова техніка 32, № 4 (26 грудня 2021): 35–46. http://dx.doi.org/10.34169/2414-0651.2021.4(32).35-46.
Повний текст джерелаСкачков, Віктор Олексійович, Ольга Русланівна Бережна, Володислав Ростиславович Румянцев, Ігор Олегович Скоморохов та Артем Віталійович Яценко. "МЕТОД ОЦІНКИ НАДІЙНОСТІ ЗНАЧНО НАВАНТАЖЕНИХ КОНСТРУКЦІЙ ПІД ЧАС МАЛОЦИКЛОВОГО ВАНТАЖЕННЯ". Scientific Journal "Metallurgy", № 2 (22 лютого 2022): 103–7. http://dx.doi.org/10.26661/2071-3789-2021-2-12.
Повний текст джерелаKokiza, S. "Моделювання системи забезпечення множинного неортогонального доступу у мережі 5G". COMPUTER-INTEGRATED TECHNOLOGIES: EDUCATION, SCIENCE, PRODUCTION, № 43 (12 червня 2021): 42–46. http://dx.doi.org/10.36910/6775-2524-0560-2021-43-07.
Повний текст джерелаХІТРОВ, Ігор, Валерій СОРОКА, Михайло КРИСТОПЧУК та Світлана ПАШКЕВИЧ. "МОДЕЛЬ ФОРМУВАННЯ ПЛОЩІ ТРАНСПОРТНОГО ОБСЛУГОВУВАННЯ МАРШРУТІВ ПАСАЖИРСЬКОГО СПОЛУЧЕННЯ". СУЧАСНІ ТЕХНОЛОГІЇ В МАШИНОБУДУВАННІ ТА ТРАНСПОРТІ 2, № 13 (4 грудня 2019): 173–84. http://dx.doi.org/10.36910/automash.v2i13.101.
Повний текст джерелаКовтун, І., А. Горошко та С. Петращук. "ОЦІНКА МІЦНОСТІ ТА ЖОРСТКОСТІ КОНСТРУКЦІЇ ДРУКОВАНИХ ПЛАТ В УМОВАХ ДИНАМІЧНИХ НАВАНТАЖЕНЬ". MEASURING AND COMPUTING DEVICES IN TECHNOLOGICAL PROCESSES, № 1 (27 травня 2021): 113–20. http://dx.doi.org/10.31891/2219-9365-2021-67-1-16.
Повний текст джерелаГорбань, А. В., І. І. Довгаль, С. І. Крижановська та Андрій Найденов. "ОСОБЛИВОСТІ ПРОГНОЗУВАННЯ СТАНУ СУДНОВОГО ОБЛАДНАННЯ РІЧКОВОГО ТА МОРСЬКОГО ТРАНСПОРТУ". Vodnij transport, № 3(31) (10 грудня 2020): 55–66. http://dx.doi.org/10.33298/2226-8553.2020.3.31.06.
Повний текст джерелаSakovich, L., G. Krykhovetskyi та Y. Nebesna. "ТЕОРЕТИКО-МНОЖИННІ МОДЕЛІ ОБ’ЄКТІВ ЗІ ЗМІННОЮ СТРУКТУРОЮ". Системи управління, навігації та зв’язку. Збірник наукових праць 5, № 51 (30 жовтня 2018): 136–39. http://dx.doi.org/10.26906/sunz.2018.5.136.
Повний текст джерелаБлезнюк, Олег. "Визначення показників рівня технічної експлуатації та їх вплив на надійність техніки". Науковий жарнал «Технічний сервіс агропромислового лісового та транспортного комплексів», № 22 (7 грудня 2020): 242–54. http://dx.doi.org/10.37700/ts.2020.22.242-254.
Повний текст джерелаKorniіenko, Svitlana, Ihor Korniienko, Volodymyr Dmytriiev та Anatolii Pavlenko. "ФОРМУВАННЯ КІЛЬКІСНИХ ХАРАКТЕРИСТИК ВИПРОБУВАНЬ ДЛЯ ОДЕРЖАННЯ ТОЧКОВИХ ОЦІНОК ЗАДАНОЇ ЯКОСТІ". TECHNICAL SCIENCES AND TECHNOLOGIES, № 1(19) (2020): 140–55. http://dx.doi.org/10.25140/2411-5363-2020-1(19)-140-155.
Повний текст джерелаBilous, N. M., та A. V. Peleshanko. "РЕЙТИНГОВА ОЦІНКА ДІЯЛЬНОСТІ СТРАХОВИХ КОМПАНІЙ В УКРАЇНІ ЗІ СТРАХУВАННЯ ЖИТТЯ". Bulletin National University of Water and Environmental Engineering 3, № 83 (23 липня 2019): 3. http://dx.doi.org/10.31713/ve320181.
Повний текст джерелаДисертації з теми "Модель оцінки надійності"
Михайлів, Ярослав Андрійович. "Аналіз достовірності вихідної інформації, розрахункових моделей та методів оцінки надійності розподільних мереж". Master's thesis, КПІ ім. Ігоря Сікорського, 2019. https://ela.kpi.ua/handle/123456789/35759.
Повний текст джерелаActuality of theme. The problem of reliable supply of electricity to consumers is one of the most important in solving the problems of designing and operating power systems (EPS) of cities, industrial enterprises and individual objects. Requirements for reliable electricity supply are defined by the relevant regulatory documents and must be clearly considered and implemented. Both consumers and businesses are seriously harmed by forced power outages. At any level of electricity infrastructure, ensuring the reliability of electricity supply to consumers has always been an important scientific and technical problem, the research and solution of which is devoted to the numerous works of scientists and research and design organizations (KPI, TSU, MEI, etc.). Main directions of research: obtaining, systematization and processing of statistical information, evaluation of its reliability; development of adequate calculation models for evaluation and optimization of reliability of elements, circuits and power supply system as a whole; determination of effective systemic reliability indicators and methods of their calculation and making optimal decisions; economic indicators of losses of consumers and power supply organizations from under-receipt and under-release of electricity. General analysis of the operation of electrical networks at the moment shows that their technical condition is unsatisfactory, there is an aging equipment, progressing, and, consequently, a decrease in the reliability of the elements and power systems. Moreover, the constant complexity of the structure and the emergence of new network elements requires the development of a theory of solving the problems of estimating and improving the reliability of energy supply. Accordingly, there is a need to develop a decision-making methodology at the stages of construction, reconstruction and operation of distribution grids (DG). In assessing the reliability of consumer electricity systems, such indicators as the probability of an accidental event of a power outage, the accidental magnitude of unavailability of electricity to consumers (which occurred as a result of events that have occurred or are predicted, calculated) are usually considered, real or projected losses of consumers or electricity supply organization. The analysis shows that the damage rates of the elements of distribution networks and the value of losses borne by consumers almost always depend on the specific conditions. Moreover, even for the same operating conditions, fluctuations in the integrity indicators of network elements are occasionally fluctuated, by more than 100 percent. This indicates that in the conditions of each system it is necessary to analyze the data of the accident statistics with the determination of the real factors of influence on the original design indicators (lengths of lines, circuit decisions, number of nodes, etc.) It should also be considered and taken into account when determining the losses (which occurred or projected) their essential dependence on the season, time of day, and also - to a large extent - on how long the break in the power supply of the consumer. The analysis of statistical information indicates a significant instability, non-stationarity of indicators used in the formation of calculation models, evaluation of the reliability of schemes. The systematic approach to developing more efficient models and methods of assessing the reliability of distribution networks is more relevant than ever. The purpose and tasks of the study. The purpose of the work is to develop a methodology for evaluating the reliability of the original parameters of the reliability of the SEM, which are determined by the limited amount of data of the accident statistics, and the influence of the adopted calculation models on the results of calculating the network reliability indicators. Research objectives: analysis of information on the functioning of distribution electric networks; assessment of reliability of baseline reliability indicators, determination and consideration of influential factors, laws of distribution of random variables; selection and comparison of calculation models of reliability estimation of distribution electric networks with voltage of 6-10 kV on the basis of processing of received data of emergency statistics; sequence of implementation of the systematic approach to statistical analysis information and assessing the reliability of electricity supply. Object of research - Distribution networks of power supply systems of cities. Subject of research - Mathematical models, methods for assessing the reliability of power supply systems, taking into account the peculiarities of operating conditions and the amount of received information. Research methods. The basis of the performed research was the following methods: nonlinear programming - a method of discrete coordinate descent for making decisions on the optimization of network breakpoints; probability theory - is used to estimate the effect of initial information errors on the accuracy of determining power losses and the value of the probable non-release of electricity to consumers when calculating reliability indicators; mathematical statistics - for plotting distribution histograms according to emergency statistics, as well as determining distribution laws and their parameters; to describe the curves showing the dependence of a possible error in the calculation of values on the volume of statistics relating to reliability indicators; statistical test method (Monte Carlo) - to determine the impact of errors of initial information on decision making, while minimizing the lack of electricity to consumers. Elements of scientific novelty of the obtained results. 1. A comprehensive approach was implemented in addressing the issues of estimation of source information errors and their impact on the calculation models, namely reliability. 2. A methodology for estimating the impact of the reliability of the source information on the value of the calculated reliability indicators of the distribution networks when using measures and methods of refining the indicators that are determined is proposed. 3. Smoothing of statistical distributions of data of emergency statistics and comparative analysis of calculation models taking into account individual factors is carried out. 4. The influence of the adopted calculation models on the results of the optimization of the modes of distribution networks is estimated, based on the minimization of power losses and taking into account the reliability of providing consumers with electricity. The practical value of the results. In the master's thesis the scientific results are obtained that are of value for the enterprises of electric networks in the issues of collection, systematization of information for its further processing in order to obtain the parameters of the calculation models. This significantly increases the reliability of the source information, the calculation models, as well as directly calculating the reliability of distribution networks.
Руденко, Олександр Антонович. "Імовірнісні моделі та методи оцінювання надійності програмних засобів з урахуванням вторинних дефектів". Thesis, ТОВ "Фірма "Техсервіс", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/19064.
Повний текст джерелаThe dissertation on obtaining the scientific degree of candidate of technical sciences in the specialty 05.13.06 – information technologies – National technical University "Kharkiv Polytechnic Institute", Kharkov, 2015. The dissertation dedicated to the developing of models, methods of reliability estimation of software-technical complexes of information technology on the basis of making secondary defects. Scientific results are: improving probabilistic models of reliability estimation of software based on the parameters of secondary defects by modifying the risk function of these models that allows to reflect processes of testing and maintenance of software; method of estimating secondary defects of software tools that is based on the analysis of statistical data of manifestation of primary defects of software tools that allows to raise the accuracy of the quantitative assessment of performance indicators; the method of calculating the average intensity of manifestation of defects and the average change in the intensity of manifestation of defects with the help of modified model Jelinski-Moranda that, unlike existing, takes into account factor of secondary defects that allows to verify the reliability of software tools. Information technology of assessment the secure of software tools taking into account the secondary defects is devised basing on the method of estimating the number of secondary defects according to the statistics of defect detection and the method of calculating the average intensity of manifestation of defects and the average change in the intensity of manifestation of defects. The proposed models and methods allow to raise the accuracy of estimation of reliability of software and hardware complexes that is achieved by taking into account the factor of secondary defects.
Козачук, Оксана Дмитрівна, та Oksana D. Kozachuk. "Математичні моделі оцінки надійності радіоелектронних систем". Thesis, Національний авіаційний університет, 2021. https://er.nau.edu.ua/handle/NAU/48990.
Повний текст джерелаThe work is devoted to the development of mathematical models for assessing the reliability of radio electronic systems (RS) with active phased antenna arrays (APAA). The work developed a complex of mathematical models for approximating the curves of failure rates of electrical radio products by probability distributions describing sudden and gradual failures. The influence of the redundancy factor of a distributed structure with different probabilistic distributions of failures of nodes, channels and modules is investigated. Models for assessing the reliability of RS with APAA in case of sudden and gradual failures of channels and modules have been built and investigated. Taking into account the effect of gradual failures of antenna array modules in assessing the reliability of the RS allows to increase the estimate of the average operating time before the APAA failure from 30 % to 80 %. A mathematical model has been developed and investigated for assessing the reliability of the APAA RS depending on the temperature of the core of GaN (gallium nitride) crystals of micro modules, which makes it possible to choose the optimal structure of the liquid cooling system.
Тези доповідей конференцій з теми "Модель оцінки надійності"
Ляшенко, І., О. Войтко, Д. Шевченко, М. Маланчук, А. Мулявка та М. Прима. "МОДЕЛЬ ОЦІНКИ НАДІЙНОСТІ ПРОГРАМНОГО ЗАБЕЗПЕЧЕННЯ ІНФОРМАЦІЙНО-УПРАВЛЯЮЧИХ СИСТЕМ СПЕЦІАЛЬНОГО ПРИЗНАЧЕННЯ". У Scientific discoveries: projects, strategies and development. European Scientific Platform, 2019. http://dx.doi.org/10.36074/25.10.2019.v1.11.
Повний текст джерелаДелембовський, Максим, Микола Клименко та Борис Корнійчук. "РОЗРОБКА МОДЕЛІ ОЦІНКИ НАДІЙНОСТІ ВІБРОПЛОЩАДКИ НА ОСНОВІ НЕЧІТКОЇ ЛОГІКИ". У SPECIALIZED AND MULTIDISCIPLINARY SCIENTIFIC RESEARCHES. European Scientific Platform, 2020. http://dx.doi.org/10.36074/11.12.2020.v2.28.
Повний текст джерела