- 21. Determination of vertical dynamics for a standard Ukrainian boxcar with Y25 bogies
- (Content №5 2021)
- ... (design) dimensions of the carrying elements and a boxcar with the actual dimensions (after a long service life) on the basis of the field tests. The differential equations were solved by theRungeKutta ...
- Created on 29 October 2021
- 22. Increasing the sensitivity of measurement of a moisture content in crude oil
- (Content №5 2021)
- ... with a negative differential resistance. Findings. Analytical expressions are obtained to describe the dielectric constant of an inhomogeneous mixture of water and oil. Using these equations, the capacitance ...
- Created on 29 October 2021
- 23. Compound physical and mechanical effects stimulating metastable diamond formation
- (Content №4 2021)
- ... using shock-wave effects on a metal alloy containing non-diamond carbon. Methods of infrared and ultraviolet spectroscopy, X-ray phase analysis, electron paramagnetic resonance, isotope analysis, differential ...
- Created on 23 August 2021
- 24. Analysis of the regression model of the enterprise’s financial activity by research on residual error
- (Content №2 2021)
- ... of regression equations. Originality. For the first time, the application of residual error analysis as a random variable has been proposed in order to construct its conditional differential distribution ...
- Created on 29 April 2021
- 25. The synthesis of strategies for the efficient performance of sophisticated technological complexes based on the cognitive simulation modelling
- (Content №2 2021)
- ... Neural Network by Using Differential Search Algorithm for Solving Power Flow Problem. Advances in Electrical and Computer Engineering, 19(4), 57-64. https://doi.org/10.4316/aece.2019.04007. 20. Milov, ...
- Created on 29 April 2021
- 26. The optimal method for assessing gas reserves based on the calculation of gas hydrodynamic parameters
- (Content №2 2021)
- ... of the initial data for its use. The second is based on the differential, differential-integral, and integral methods to improve the accuracy of the calculated results. Practical value. The new methods ...
- Created on 29 April 2021
- 27. Dynamic loads in self-aligning gear transmissions of heavy loaded machines
- (Content №1 2021)
- ... gear self-alignment time, collision velocity during the alignment and dynamic load factor are obtained by integrating an ordinary differential equation. Methods of the linear theory for oscillations are ...
- Created on 05 March 2021
- 28. Direct method of studying heat exchange in multilayered bodies of basic geometric forms with imperfect heat contact
- (Content №1 2021)
- ... based on the reduction method, the concept of quasiderivatives, a system of differential equations with impulse action, the method of separation of variables, and the modified method of eigenfunctions ...
- Created on 05 March 2021
- 29. Optimization of heat production processes in the biofuel vortex combustion systems
- (Content №6 2020)
- ... modeling of the vortex combustion control system of uncertified fuel. A peculiarity of the study is the three-circuit interconnected proportional-integral-differential (PID) control of fuel and air dispensers ...
- Created on 22 December 2020
- 30. Enhancing efficiency of air distribution by swirled-compact air jets in the mine using the heat utilizators
- (Contens №5 2020)
- ... model for finite-element CFD. 2018 Fluid Dynamics Conference. https://doi.org/10.2514/6.2018-4041. 20. Lorin, E. (2019). From structured data to evolution linear partial differential equations. Journal ...
- Created on 30 October 2020
- 31. The analytic-field method for calculating the squirrel-cage induction motor parameters
- (Contens №3 2020)
- ... of the air-gap field curve, the differential scattering coefficient and the saturated values of the inductive scattering resistances are calculated according to empirical formulas, the calculated values ...
- Created on 02 July 2020
- 32. Enhancing the efficiency of gas distribution stations operation by selecting the optimal gas pressure and temperature parameters at the station outlet
- (Contens №3 2020)
- ... 457-466. https://doi.org/10.15330/pcss.20.4.457-466. 7. Krushnevych, S. P., Piatnychko, A. Y., Zhuk, H. V., & Soltanybereshne, M. A. (2016). The use of differential pressure at gas distribution ...
- Created on 02 July 2020
- 33. Effect of the chirp on interactions of pure-chirped solitons
- (Contens №2 2020)
- ... 8. Wang, P., Tian, B., Liu, W. J., & Sun, K. (2014). N-soliton solutions, Bäcklund transformation and conservation laws for the integro-differential nonlinear Schröbinger equation from the isotropic inhomogeneous Heisenberg spin magnetic chain. Computational Mathematics and Mathematical Physics, 54(4), 727-743. https://doi.org/10.1134/S0965542514040125. ...
- Created on 10 May 2020
- 34. Synthesizing models of nonlinear dynamic objects in concentration on the basis of Volterra-Laguerre structures
- (Contens №2 2020)
- ... 9. Alvandi, A., & Paripour, M. (2019). The combined reproducing kernel method and Taylor series for handling nonlinear Volterra integro-differential equations with derivative type kernel. Applied Mathematics and Computation, (355), 151-160. https://doi.org/10.1016/j.amc.2019.02.023. ...
- Created on 10 May 2020
- 35. Modeling of the heat transfer process taking into account bursting expansion of fire-retardant coating
- (Content №1 2020)
- ... the differential equation of heat conduction using the method of reduction, the concept of quasi-derivatives, the method of separation of variables and the modified method of eigenfunctions of Fourier. ...
- Created on 10 March 2020
- 36. Control of the belt speed at unbalanced loading of the conveyor
- (Contens №6 2019)
- ... partial differential equations Methodology. To calculate the parameters of a conveyor line with a variable speed of material motion, an instrument of mathematical physics is used. Findings. Comparative ...
- Created on 23 December 2019
- 37. Energy effectiveness of the differential of a device for speed change through the sun gear
- (Contens №6 2019)
- ... and determination of performance efficiency of three- and four-stage gear differentials in speed changing devices through sun gears. Substantiation of the possibility of their use in machine drives based ...
- Created on 23 December 2019
- 38. Defining the limits of application and the values of integration variables for the equations of train movement
- (Contens №6 2019)
- ... differential equations, namely the classical, Runge-Kutta-Feelberg, and Rosenbrock methods, are used. Computational accuracy was verified using simulation methods and compared with experimental data. Findings. The ...
- Created on 23 December 2019
- 39. Physical and chemical transformations in gas coal samples influenced by the weak magnetic field
- (Contens №6 2019)
- ... of low intensity. Methodology. This study used the experimental research methodology, mathematical treatment of the results and analytical methods including X-ray fluorescence spectroscopy, differential ...
- Created on 23 December 2019
- 40. New approach to zone division of surface of the deposit by the degree of sinkhole risk
- (Contens №6 2019)
- ... support of geodynamic monitoring of subsurface use facilities. Vestnik STUGiT, 4(36), 26-39. 5. Yaobin Sheng, Linlin Ge, Yunjia Wang, & Chris Rizos (2012). Differential radar ...
- Created on 23 December 2019