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Academic literature on the topic 'Вагові функції'
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Journal articles on the topic "Вагові функції"
СПАСІЧЕНКО, Оксана. "ДОСВІД ОПТИМІЗАЦІЇ МАРШРУТНОЇ МЕРЕЖІ МІСТА ЗА ЕКОЛОГО-ЕКОНОМІЧНИМИ ПОКАЗНИКАМИ." СУЧАСНІ ТЕХНОЛОГІЇ В МАШИНОБУДУВАННІ ТА ТРАНСПОРТІ 2, no. 13 (December 4, 2019): 165–72. http://dx.doi.org/10.36910/automash.v2i13.100.
Full textШідловський, В. О., О. В. Шідловський, В. В. Кравців, Г. П. Гаплик, and О. Г. Нецюк. "ВПЛИВ АВТОІМУННОГО ТИРЕОЇДИТУ НА СЕРЦЕВО-СУДИННУ СИСТЕМУ (огляд літератури та власні дані)." Здобутки клінічної і експериментальної медицини, no. 2 (July 28, 2021): 178–83. http://dx.doi.org/10.11603/1811-2471.2021.v.i2.12222.
Full textГорбань, Ю. С., Ю. А. Андреєва, and А. О. Белік. "Єдиність ентропійного розв'язку задачі Діріхле для модельного рівняння з виродженням." Науковий вісник Ужгородського університету. Серія: Математика і інформатика 38, no. 1 (May 27, 2021): 33–47. http://dx.doi.org/10.24144/2616-7700.2021.38(1).33-47.
Full textКошарновська, С. Л. "ПРАВОВІ ФОРМИ ЗДІЙСНЕННЯ ФУНКЦІЙ ДЕРЖАВИ: ПОНЯТТЯ ТА ВИДИ." Збірник наукових праць ХНПУ імені Г. С. Сковороди "Право", no. 33 (2021): 121–33. http://dx.doi.org/10.34142/23121661.2021.33.15.
Full textPetryk, Sergiy. "ДЕРЖАВНО-ПРИВАТНЕ ПАРТНЕРСТВО ЯК ІНСТРУМЕНТ ТРАНСФОРМАЦІЇ ФОРМ РЕАЛІЗАЦІЇ ФУНКЦІЙ ДЕРЖАВИ." Public Administration and Regional Development, no. 7 (April 7, 2020): 309–33. http://dx.doi.org/10.34132/pard2020.07.15.
Full textСінькевич, О. В. "ВПЛИВ ФУНКЦІЙ ДЕРЖАВИ НА ГАЛУЗЕВІ ФУНКЦІЇ КОНСТИТУЦІЙНОГО ПРАВА: ПОСТАНОВКА ПИТАННЯ." Наукові праці Національного університету “Одеська юридична академія” 26 (July 22, 2020): 107–13. http://dx.doi.org/10.32837/npnuola.v26i0.667.
Full textКолгатін, Олександр Геннадійович, and Лариса Сергіївна Колгатіна. "Умови застосування модифікованих процедур обчислення тестових балів у системах організації самостійної роботи студентів." Theory and methods of learning fundamental disciplines in high school 8 (November 27, 2013): 142–47. http://dx.doi.org/10.55056/fund.v8i1.210.
Full textСтасюк, Юрий, and Марина Резникова. "ОПРЕДЕЛЕНИЯ ЖЕСТКОСТИ СПЛАВА ТИТАНОВОГО ЭНДОПРОТЕЗА НИЖНЕЙ ЧЕЛЮСТИ." Modern engineering and innovative technologies, no. 07-01 (April 29, 2018): 63–66. http://dx.doi.org/10.30890/2567-5273.2019-07-01-061.
Full textБалабаев, Оюм Темиргалиевич, Бахтияр Шарапиденович Аскаров, Гүлнәр Арынғазы, Салауат Еркінбекұлы Қайырбеков, and Асанәлі Асхатұлы Ахаев. "АНАЛИЗ ВАГОНОПОТОКОВ НА ЖЕЛЕЗНОДОРОЖНОЙ СТАНЦИИ «ҚАРАҒАНДЫ-СҰРЫПТАУ»." Science and Technology of Kazakhstan, no. 2,2021 (June 29, 2021): 183–91. http://dx.doi.org/10.48081/odmu8763.
Full textАмінов, Р. Ф., О. К. Фролов, and А. С. Амінова. "Вплив гірудотерапії на репродуктивну функцію лабораторних щурів." Vìsnik Zaporìzʹkogo nacìonalʹnogo unìversitetu. Bìologìčnì nauki, no. 1 (August 2, 2021): 29–36. http://dx.doi.org/10.26661/2410-0943-2020-1-04.
Full textDissertations / Theses on the topic "Вагові функції"
Омельченко, А. В., О. В. Федоров, О. І. Вінниченко, and В. Ф. Болюх. "Оптимальна обробка даних у балістичному лазерному гравіметрі при дії корельованих завад." Thesis, Український метрологічний журнал, 2020. https://openarchive.nure.ua/handle/document/16461.
Full textОриняк, Андрій Ігорович. "Методи розрахунку коефіцієнта інтенсивності напружень з врахуванням геометричної нелінійності та довільної форми тріщини." Doctoral thesis, Київ, 2021. https://ela.kpi.ua/handle/123456789/43758.
Full textThe dissertation is dedicated to the development of numerical and analytical methods for calculating the stress intensity factor (SIF) for nonclassical problems of fracture mechanics, in particular, for cracks of complex shape and for cracks in thin structures with taking into account geometric nonlinearity (GN) and their applications in various industries, in particular, for nuclear power plants, for calculation of the elements of the reactor unit. A modification of Williams's method is presented, which describes the stress state in the crack tip. For modification of the classical approach in the considered method the additional members were presented, which are infinite in the crack tip, but attenuate at infinity. The main idea of the method is to divide the whole area of the body into two separate parts – internal one, which embraces the tip of the crack, and the external one. In the inner area, only the classic Williams functions are used, and in the outer area both the classical members and additional ones are used. At the boundary between the selected subdomains, the conjugation conditions are to be fulfilled, the essence of which is to equalize here the stresses and displacements. The very high efficiency of this method is shown for bodies that have the shape of a circle, or are infinite, where almost exact values (up to 6-7 digits) are achieved when using no more than 12-16 members of the expansion. However, for a very elongated rectangular body the method gives much worse results, and the error can reach up to 2%. The practical significance of the proposed approach consists in the obtaining the simple and effective tool for testing the capabilities of commercial packages for calculating the parameters of fracture mechanics, which, as we know, do not always provide the correct results for case when load is applied on the crack surfaces. A thin-walled pipe with a long surface crack is considered. The pipe, surface of which may contain the initial deviation form ideal circle, is loaded by inner pressure. In first time the problem of determining the SIF was considered in a geometrically nonlinear formulation, when changes in the geometry of the body in the process of deformation are accounted for linear material behavior. Based on the Chen-Finnie method, which considers the crack as concentrated compliance, and on original solution for geometrically nonlinear behavior of curved initially distorted beam, the compact analytical formulas are obtained, which gives the value of SIF for each value of inner pressure. Comparison of the analytical results with those obtained by careful numerical FEM analysis, on the one hand, showed their good correspondence, and therefore the accuracy and efficiency of both the analytical and numerical procedures are confirmed. On the other hand, for the first time in the scientific literature, the value of SIF in a geometrically nonlinear formulation are obtained for surface cracks in slightly distorted cylindrical shell with surface long crack. It was shown that even for perfectly circular pipes having the cracks with depth up to half of the thickness of pipe walls, loaded by moderate level of inner pressure, the geometrical nonlinear values of SIF can be 10-15% less than those at linear approach application. This is very significant practical result. Another geometrically nonlinear problem is numerically investigated by known commercial FEM software for the through crack, which is loaded by a significant value of additional longitudinal force (the main factor of geometric nonlinearity considered) and small value of internal pressure (linear consideration). This statement distinguished this task from research conducted at NASA (USA), where the pressure and axial force were proportional as to pipe with closed ends. The geometric nonlinearity of the study is investigated through an incremental increase in loads and the corresponding recalculation of the SIF for the already taken into account changes in the deformed geometry (curvature). A number of tasks for determining the SIF for different pipe radii and dimensionless force values were calculated. Dimensionless parameters, which characterize the deviation of the values of SIF from the linear one, are numerically determined. Application of least square method allowed to suggest the simplified analytical formula for calculation of these deviations. These results are of great theoretical and practical importance. In particular, it is shown that for real pipes the neglecting by influence of axial force in usual approach may lead to 4-6% error of SIF determination. It is noted that additional account for large values of pressure, possible plastic deformations, may further reduce the actual values of SIF. Thus, the significance of the problems and the need for further research in this direction are shown. The necessity of analysis of flat cracks of non-canonical shape in three-dimensional bodies is noted. This is due to the fact that almost all existing solutions in the literature and reference results in normative documents are given for cracks that have shape of an ellipse or its part. However, real cracks detected by non-destructive testing are irregularly shaped cracks. Therefore, it is necessary to create the analytical methods that would allow to assess the impact of the crack shape, and to verify them with careful numerical procedures by FEM. For this purpose, flat internal cracks in infinite 3D body are considered. The formulation of problems for them is reduced to well-known integro-differential equation of the theory of elasticity. Note, that exact fundamental analytical solutions of which exist only for a circular crack and only for some simple laws of loading for an elliptic crack. A universal semi-analytical method for solving the integro-differential equation of the theory of elasticity for plane cracks of normal separation of arbitrary shape has been developed. It is proposed to consider the displacement of the crack edges as a product of a certain function of the crack shape, which satisfy to known asymptotic behavior of the displacement field near the crack front, and a certain polynomial series. As for the functions of the form, three variants of their choice were investigated - a) classical, which depends on the squares of ratio of radial coordinate of the considered point, and the corresponding coordinate of contour point; b) multiplicative, based on the product of equations describing the straight sections of the crack contour, and c) the original Oore-Burns function, which is an integral of the crack contour from the inverse square of the distance of the considered point to each point of the contour. The results showed that the greatest accuracy is achieved by application of hypersingular approach with Oore-Burns function of form. The verification of results was performed for elliptic crack, semielliptic inner crack, rectangular crack. The results were compared with numerical ones calculated by FEM. Practical calculations of SIF dependance with time for NPP reactor ant its elements for different scenarios of emergency situations are carried out. A number of simulation models with a built-in crack have been created, for which SIF calculations were performed by nonlinear FEM analysis. For cracks going through the cladding, where stress jumps occur, the method of influence functions is elaborated, and analytical-numerical procedure used piece-wise continuous basic laws of loading. Practical calculations were performed for the nozzle of reactor vessel, the cylindrical part of vessel, the core barrel and core baffle. These calculations were used to justify the extension of the service life of several units of Ukrainian NPPs.
Диссертационная работа посвящена разработке численных и аналитических методов расчета коэффициента интенсивности напряжений, (КИН) для неклассических проблем механики разрушения, в частности, для трещин сложной формы и для трещин в тонкостенных конструкциях с учетом геометрической нелинейности, (ГН). Представлена модификация метода Вильямса, что учитывает затухающие на бесконечности члены. Исследованы границы и даны рекомендации о применении данного метода. Разработан аналитический метод расчета КИН в трубах с длинными осевыми поверхностными трещинами с учетом ГН в зависимости от внутреннего давления. Результаты хорошо коррелируют с полученными в роботе численными решениями МКЭ. Построены численные модели для расчета КИН и раскрытия берегов трещин в ГН постановке для сквозных трещин в зависимости от переменной величины осевой силы. Построена апроксимационная формула, что описывает влияние ГН эффекта для обобщенной осевой силы и безразмерной длины трещины. Показана значимость эффекта для реальных лабораторных экспериментов. Разработан универсальный полуаналитический метод решения интегро-дифференциального уравнения теории упругости для плоских трещин нормального отрыва произвольной формы. Для проверки аналитических результатов построены численные модели МКЭ для трещин разной формы, например, для прямоугольной, внутренней полуэллиптической трещины, и др., и проведено сопоставление результатов. Проведены практические расчеты КИН во времени для элементов конструкций АЭС для разных сценариев прохождения аварийных ситуаций. Для этого создан ряд имитационных моделей со встроенной трещиной, для которой расчеты КИН проводили методами нелинейной механики разрушения. Для трещин, что проходят через наплавленный материал, где происходят скачки напряжений, обосновано применение метода функций влияния, для чего разработано аналитико-численную процедуру, что использует частично непрерывные базовые законы нагружения.
Козаченко, А. П. "Інформаційне та програмне забезпечення системи інтелектуального аналізу енергоспоживання будівель." Master's thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/72073.
Full textГаврилюк, Ірина Вікторівна, and Irina Viktorovna Gavrilyuk. "Дослідження методів та засобів комунікації вимог на етап тестування програмного забезпечення." Thesis, Тернопільський національний технічний університет імені Івана Пулюя, 2015. http://elartu.tntu.edu.ua/handle/lib/21464.
Full textThis work is devoted to the study of methods and means of communication requirements at the stage of software testing. The software testing process plays a very important role at all stages of the software product lifecycle (PP). The quality of the software is a software feature, the degree of compliance of the software with requirements. In this case, requirements can be interpreted in different ways, which gives rise to several independent definitions of the term. Software quality - a set of properties of a product (service or software) that characterizes its ability to meet the customer's established or foreseeable needs. The concept of quality has different interpretations depending on the specific software system and the requirements for it models. The proposed metrics for calculating the values of quality indicators are considered. After analyzing the methods of communication of quality requirements, methods for Saati, Kogger and Yu, the simple sampling algorithm and QFD are chosen for the study. Input data for determining weighting quality factors is an assessment of the attributes set by independent experts. To solve the multicriterial optimization problem, matrices of pairwise equations are constructed and calculated. The complexity of the calculations and the number of iterations depends on the number of attributes set and the chosen method. On the basis of the existing existing methods, we developed algorithms for calculating weight coefficients for quality characteristics, depending on the values of which trace requirements are performed. The software that implements these algorithms is developed and facilitates the process of communicating quality requirements at the initial stages of the software lifecycle.