Zobrazeno 1 - 10
of 1 109
pro vyhledávání: '"V. Kovalchuk"'
Autor:
V. Kovalchuk
Publikováno v:
Збірник наукових праць Державного університету інфраструктури та технологій: серія "Транспортні системи і технології", Iss 40 (2022)
The purpose of this article is to build a mathematical model for calculating the stress-strain state of structural elements of the road pavement. The model is based on the universal function parameter - the force of adhesion of the reinforcing rod to
Externí odkaz:
https://doaj.org/article/5a08d064b4e54583a6c19b57e766b0f0
Autor:
V. Kovalchuk
Publikováno v:
Рослинництво та ґрунтознавство, Vol 12, Iss 4, Pp 115-125 (2021)
This paper presents the method of obtaining water retention properties of soils (water retention curve (WRC) and water conductivity functions) is presented. These properties, or functions, allow describing the vertical movement of water in unsaturate
Externí odkaz:
https://doaj.org/article/ac771746ea014f75ac539429ad8bc98f
Publikováno v:
Метрологія та прилади, Iss 2, Pp 52-56 (2019)
In this paper, we have discussed in detail the theoretical results using local functional density method in parameterized modification of silicon clusters. One of the main conclusions is that the comparison between theory and experiments shows the po
Externí odkaz:
https://doaj.org/article/581afb6d757d4a8399b5c05da81a00c9
Autor:
T. Baranovska, V. Kovalchuk
Publikováno v:
Проблеми теорії та методології бухгалтерського обліку, контролю і аналізу, Vol 3, Iss 41, Pp 3-12 (2018)
The article investigates the internal control as a tool for managing accounts receivables of the enterprise, which allows to identify ways to solve issues in the settlements as well as to prevent future accounts receivable timely and quickly. In the
Externí odkaz:
https://doaj.org/article/d1d6ffc37bad4a0f8dc0a80c7bea226b
Publikováno v:
Фінансово-кредитна діяльність: проблеми теорії та практики, Vol 1, Iss 36 (2021)
Abstract. The article defines the role of the financial component of the communication management strategy in HEIs based on the construction of the algorithm for optimizing the distribution of costs for communication processes and the construction of
Externí odkaz:
https://doaj.org/article/66b518766ca34cbd9f1e4c61974e0de7
Publikováno v:
Фінансово-кредитна діяльність: проблеми теорії та практики, Vol 2, Iss 33 (2021)
Актуальність теми дослідження пояснюється тим, що для досягнення загальної стійкості розвитку підприємства необхідним є налагодження
Externí odkaz:
https://doaj.org/article/cc8f2969729947869491575d8071c215
Publikováno v:
Метрологія та прилади, Iss 2, Pp 54-59 (2018)
The possibility of manifestation of individual and characteristic properties of nanoclusters on the basis of silicon is revealed. Their reactive capability and kinetics stability is defined. The theoretical database of different geometrical configura
Externí odkaz:
https://doaj.org/article/a9738efec7c64efa9eca7073aca8c65b
Publikováno v:
Метрологія та прилади, Iss 6, Pp 51-55 (2017)
In work the task to analyse possibility of use of the nanocluster as the alloying beginning of formation of the clustered heterostructure is set. As a result of the research conducted by us it is found out those mechanisms of formation of the nanoclu
Externí odkaz:
https://doaj.org/article/83ce80a3e0084a15a4c77d0442c7aefc
Autor:
V. Kovalchuk
Publikováno v:
Збірник наукових праць Державного університету інфраструктури та технологій: серія "Транспортні системи і технології", Vol 2, Iss 33 (2019)
In this paper, for an inverted double pendulum with asymmetric follower force a mathematical model has been constructed in generalized coordinates. The dynamics of the system has been explored through both analytical and numerical approaches. Stabili
Externí odkaz:
https://doaj.org/article/884b9ae5e8a74106acc19cd5a1765b72
Publikováno v:
Vìsnik: Kiïvsʹkij Nacìonalʹnij Unìversitet Imenì Tarasa Ševčenka. Bìologìâ, Vol 68, Iss 3, Pp 98-102 (2016)
Human beta-defensins (hBDs) are small cationic antimicrobial peptides with multiple biologic activities. The aim of the study was cloning, expression in E.coli, purification and in vitro analysis of biological activity of recombinant human beta-defen
Externí odkaz:
https://doaj.org/article/6b4b2725815249528ff3330472a3d68a