DOI: 10.25136/2644-5522.2019.4.29297

Abstract: The subject of the study is the sensitivity of the experimentally observed characteristics of the particle and radiation flow to variations in the parameters of the model of interaction of particles with the medium. The object of study is the diffusion flow of particles propagating in an unlimited medium. The author considers the variations in particle flux due to changes in the diffusion coefficient both over time and at different points in space. It is emphasized that the expressions obtained in this work can be considered as a statement of the inverse problem in the form of integral equations of the first kind. The research method is variational analysis and numerical experiment. The justification of the method is based on a comparison of the results of calculations by the proposed method and those obtained by the numerical diffusion equation by the difference method. The main conclusions of the study are the expressions for the function of the sensitivity of the diffusion flux to functional variations of the diffusion coefficient. The novelty of the study lies in the formulation of the inverse problem of determining the functional form of the coefficients of the diffusion equation (thermal conductivity) through the function of the sensitivity of the particle flux to variations of the desired parameters.

DOI: 10.25136/2644-5522.2019.2.29201

Abstract: The subject of the research is numerical algorithms for solving fractional partial differential equations. The object of the study is the stability of several algorithms for the numerical solution of the anomalous diffusion equation. Algorithms based on the difference representation of the fractional Riemann-Liuville derivative and the Caputo derivative for various orders of accuracy are considered. A comparison is made of the results of numerical calculations using the analyzed algorithms for a model problem with the exact solution of the anomalous diffusion equation for various orders of the fractional derivative with respect to the spatial coordinate. The results of the work were obtained on the basis of the analysis of the constructed difference schemes for stability, the conducted numerical experiments and a comparative analysis of the data obtained. The main conclusions of the study are the advantage of using the approximation of the fractional Caputo derivative compared to using the difference scheme for the fractional Riemann-Liouville derivative in the numerical solution of the anomalous diffusion equation. The paper also indicates the importance of choosing the method of difference approximation of the second derivative, which is a derivative of the Caputo.

DOI: 10.7256/2409-8736.2017.1.19386

Abstract: The subject of this research is the assessment of formation of competencies of a student as a component of the portfolio provided in digital information educational environment of the educational organization. The article discusses the methods of assessment of the level of formation of competencies of a student based on the results of interim attestation and creative output of a student throughout the entire period of education. The authors examine the use of the matrix of competencies of the main curriculum in evaluation of the level of formation of single competencies of a student. The application of information resources in organization of the educational for automation of building a portfolio is being discussed. The main conclusion of the conducted research lies on the thesis that for consideration of the results of interim attestation on the main curriculum disciplines in assessment of the level of formation of competencies, it is necessary to introduce the new weighted coefficients into the matrix of competencies. The three-level evaluation of competencies of a student suggests considering the results of creative works and participation in the competitive examination only for making changes between the second and third levels.

DOI: 10.7256/2306-4196.2017.1.19340

Abstract: The study reviews Moodle and Stellus systems of distance educational technologies. The authors review the structure of placement of educational materials, tests and the possibility of establishing logical links between them. The authors discusses the possibility of increasing the effectiveness of independent work of students if there are hyperlinks from the text of test tasks to the relevant chapters of the educational material placed in the database of the system. The paper describes mutual influence of the establishment of links of test tasks with the teaching content on the quality of the training materials themselves. The method and methodology of the study is a system analysis of the distance learning aids and their analogues at the stage of setting the problem. The results are obtained using discretization and dynamic programming methods. The main conclusions of this study is the statement that the establishment of logical links between the texts of test tasks and the parts of the educational material of distance learning systems make it possible to increase the efficiency and quality of the educational process. In the first place it stimulates the more frequent conversion of students to sources of information. Secondly, it allows the authors of the study material to check its completeness and adequacy to the test tasks. The article proposes a simple program code that allows automating the process of creating hyperlinks from the text of the test questions to the chapters of the training material.

DOI: 10.7256/2409-8736.2017.1.22521

Abstract: The subject of this research is the process of assessment of the level of formedness of knowledge of the practical disciplines students with implementation of the active forms of education. The object of this research is the ways of automation of the knowledge testing process, as well as the pattern of test tasks, applied for the interval final academic assessment of the students. The authors examine the traditional methods of knowledge testing with grade system and using the computer testing. Special attention is given to application of the multimedia means as a tool of control over the students’ knowledge. In addition to the multimedia means, it is suggested to use computer simulators and training programs. The results of the work have been acquired based on the use of systemic analysis of the problems emerging in assessment of competencies of the educational organizations. The authors propose using the computer simulators for assessment of knowledge in work with the complex valuable equipment, as well as for composition of the test tasks, using the multimedia materials.