Rubberlike membranes at inner pressure

Kolpak, Eugeny P.; Maltseva, Lyubov Sergeevna

doi:10.12988/ces.2015.510289

Cited by 4 publications

(4 citation statements)

References 38 publications

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“…Therefore, many dynamic systems require the introduction of certain types of measures for further optimization. Different types of measures in dynamic systems, as well as how to define them are discussed in [9][10][11][12].…”

Section: Literature Reviewmentioning

confidence: 99%

Use of ERP System to Manage the Economy of Agricultural Complex

Bondarenko*¹,

Zubov²,

Orlov³

et al. 2019

IJITEE

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The article deals with the issues of the practical application of industrial information system, namely, Enterprise Resource Planning (ERP) in the management of the economy of a diversified agro-industrial complex in the risk farming area. Features of ERP system application are considered taking into account both multidirectional activity of the agricultural enterprise (crop production, animal husbandry, and industrial production), and the complex system of taxation: the presence of a common taxation system and taxation of various activities. Particular attention is paid to the mechanism of closing accounts, and the formation of the actual cost in terms of agricultural production, which is not so much complicated as a laborious and routine task. A huge number of transactions, multiple calculations of the costs distribution bases, the complex structure of the divisions of the very enterprise make the task of automating of process closing period extremely important. The article presents the experience of both the use of ERP system and the training method of specialists in the use of such industrial information systems for automated accounting and management accounting, payroll and personnel accounting, tested at St. Petersburg State University. In consequence of the implementation of the algorithms described in the article, one managed to achieve an increase in both quantitative economic indicators of the agricultural complex, and qualitative indicators, related to the training of specialists in the field of application of ERP systems in agro-industrial complexes

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Section: Literature Reviewmentioning

confidence: 99%

Use of ERP System to Manage the Economy of Agricultural Complex

Bondarenko*¹,

Zubov²,

Orlov³

et al. 2019

IJITEE

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“…The solution of nonlinear differential equations [18][19][20][21][22][23][24][25] can be carried out various approximate analytical methods [26][27][28][29][30][31][32][33][34][35]: the method of Van der Pol, the harmonic balance method, the averaging method, the small parameter method, the method of Krylov-Bogolyubov, method of harmonic linearization, the method of Poincare. We obtained an approximate analytical solution of the modified method of harmonic linearization with Chebyshev polynomials [36][37][38][39][40][41][42] 2 2 4 2 4 2 2 2 2 3 3 3 3 11 11 11 22 3 15 3 1 2 3 3 3 3 3 Figure 15 shows graphs of the vertical oscillations of mobile satellite antenna obtained by analytical method (blue), a numerical method (yellow) and the graph the oscillation without vibration protection devices (green).…”

Section: Fig14 the Scheme Vibration Protection Devicementioning

confidence: 99%

Mathematical modeling of the guidance system of satellite antenna

Ivanov¹,

Kolpak²

2016

ces

Self Cite

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The present paper develops a mathematical model of mobile satellite antenna elliptical shape which is under the influence of wind loads. The wind load is calculated in the framework of a hydrodynamic model for the mathematical package freeFEM++. To reduce the external impact, a model of vibration protection device is developed. The solution of developed mathematical model is constructed using numerical and analytical methods.

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“…In view of boundary conditions (8,9) are found: n . In experimental investigations on stretching of the circular membranes of normal pressure this dependence is realized [34,36]. T in case of static equations is constant and is independent on the coordinate s .…”

Section: The Static Solutionmentioning

confidence: 99%

“…For large deformations of shells and membranes to calculate such characteristics are not simply [22][23][24][25][26]. This is due to not only to the difficulties of constructing solutions of nonlinear boundary value problems, but also to the fact that they can have more than one solution [27][28][29][30][31][32][33][34][35]. If the problem has several solutions, there are difficulties in the numerical solution of boundary value problems [36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%