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Actual problems of Mathematics, Physics and Mecanics
ABOUT MINKOVSKI DIFFERENCE AND SUM OF OPEN AND CLOSED SETS
This article explores the properties of the geometric difference and the Minkowski sum over the sets that are used in the study of differential games, and also outlines ways to overcome the peculiar difficulties in the calculation. The considered examples are presented for sets in the plane. Some...
3 August 2020, 13:05
NUMERICAL SOLUTION OF VOLTERRA INTEGRAL EQUATION OF THE SECOND KIND.
Problems of physics, mechanics of theoretical and practical importance are solved by the method of integral equations. Mathematical physics uses integral equations to solve problems. Therefore, it is important to find solutions to integral equations. But it is not always possible to find analytical...
3 June 2020, 01:41
FEATURES OF CURRENT TRANSFER IN n-GaPp-(InSb)1-x(Sn2)x HETEROSTRUCTURE
n-GaPp-(InSb)1-x(Sn2)x (0 х 0.05) heterostructures were fabricated and their current-voltage characteristics were studied. At low voltages V < 0.5 V the current-voltage characteristic is described by the exponential law: I = I0exp (qV / ckT) with an exponent c = 3.6, and at large voltage...
3 December 2019, 01:36
ABOUT THE PROBLEM OF SEARCHING FOR SETS OF ESSENTIAL VARIABLE LOGIC FUNCTIONS AND TESTS OF TABLE
In this paper, we study the problems of finding minimal tests, testers, and a set of variables that are essential for not everywhere defined functions. Such problems are discrete extremal problems of one class, and in algorithms that implement methods for solving them, at each step, a set of...
3 December 2019, 01:36
SOLUTION OF SYSTEMS OF LOGIC EQUATIONS IN RECOGNITION TASKS
In logical recognition systems, logical methods are used to construct the recognition algorithms based on discrete analysis and propositional calculus based on it. In the general case, the logical method of recognition provides for the presence of logical connections expressed through a system of...
3 December 2019, 01:36
SOME LOCAL PROBLEMS FOR THE PARABOLIC-HYPERBOLIC TYPE EQUATION INVOLVING A RIEMANN–LIOUVILLE FRACTIONAL DIFFERENTIAL OPERATOR
In this work, we study the boundary-value problems for a third-order mixed type loaded equation with fractional differential operator. Using method of integral equations, a unique solvability of the formulated problem has been proved....
3 November 2019, 23:50
STRUCTURAL FEATURES OF SOLID SOLUTIONS (InSb)1-x(Sn2)x FILMS GROWN FROM A LIQUID PHASE ON GaAs SUBSTRATES AND SOME PHOTOELECTRIC PROPERTIES OF HETEROSTRUCTURES ON THEIR BASIS
Layers of solid solutions (InSb)1-x(Sn2)x on (100) GaAs and (100) GaP substrates were grown by liquid phase epitaxy from an indium melt solution. The solid solution (InSb)1-x(Sn2)x (0 х 0.05) had a mono-crystal structure with the orientation (100), constant of the lattice as.s. = 6.486 Å and the...
3 August 2019, 15:41
EXPERIMENTAL INVESTIGATION OF THE THERMOPHYSICAL CHARACTERISTICS OF THE MELATIC MEAT
This article presents some results of experimental studiesofthethermophysical characteristics of melon pulp. The thermophysical characteristicsofthe pulp of melons of different varieties in the temperature range from20º to70ºСare determined. It has been established that thermal...
3 July 2019, 14:25
THE BENEFITSOF UTILIZING VIRTUAL EDUCATIONAL TECHNOLOGIES IN THE DEVELOPMENT OF STUDENTS’ SKILLS IN MICROBIOLOGY
The article discusses the benefits and prospects of virtual teachingtechnologies in the development of necessary learners’ skills in microbiology....
3 July 2019, 14:24
THE IMPORTANCEOF PICTIA IN PURIFYING RNNING WTER. ( i the example of Andijan city, Uzbekistan)
In current article the methods of purifying of sewage grey water plantswithpistia telezorovid are given. The methods of efficient ways of analyzinginlaboratoryconditions are highlighted. The chemical and physical features of pistiaplantaregiven....
3 July 2019, 14:22