analysIs of InformatIon teChnology of the management system of the hIgher eduCatIonal InstItutIon Виконано аналіз впливу зовнішніх факторів на діяльність вищого навчального закладу. Запропоновано алгоритм формування та оптимізації схеми руху інформаційних потоків в системі управління ВНЗ. Розроблено алгоритм оптимізації руху інформаційних потоків на рівні показників. Запропоновано формальну модель ВНЗ, яка дозволяє враховувати внутрішні та зовнішні чинники, які безпосередньо впливають на якість системи управління. Виявлено переваги та недоліки моделі і пропозиції щодо вдосконалення інформаційної моделі ВНЗ. ключові слова: система керування, інформаційний потік, зовнішнє середовище, система інформаційного обслуговування.hodakov V., Kozel V., sokolov a.

Web surveys are an integral part of the feedback of Internet services, a research tool for respondents, including in the field of health and psychology. Web technologies allow conducting research on large samples. For mental health, an important metric is reaction time in cognitive tests and in answering questions. The use of mobile devices such as smartphones and tablets has increased markedly in web surveys, so the impact of device types and operating systems needs to be investigated. This article proposes an architectural solution aimed at reducing the effect of device variability on the results of cognitive psychological experiments. An experiment was carried out to formulate the requirements for software and hardware. Three groups of 1000 respondents were considered, corresponding to three types of computers and operating systems: Mobile Device, Legacy PC, and Modern PC. The results obtained showed a slight bias in the estimates for each group. It is noticed that the error for a group of devices differs both upward and downward for various tasks in a psychological experiment. Thus, for cognitive tests, in which the reaction time is critical, an architectural solution was synthesized for conducting psychological research in a web browser. The proposed architectural solution considers the characteristics of the device used by participants to undergo research in the web platform and allows to restrict access from devices that do not meet the specified criteria.

Context. The problem of justifying methods for constructing models of optimization procedures as dynamic objects, taking into account the features of the training procedures, is considered. The object of the study were models of the dynamics of training procedures.Objective. The goal of the work is to solve the tasks of formalizing the training procedures, developing methods for constructing mathematical models of the learning processes, the processes of searching for the optimum of the learning tasks, and for evaluating dynamic training procedures.Method. The learning process is a totality of sequential and interrelated actions of a teacher and learners, aimed at providing a conscious and durable assimilation of knowledge, abilities, and skills. As a result of systematic analysis, main, basic patterns of training procedures are defined. The notion of "information flow" is justified as the sequence of messages carrying information for building models of interactions in information systems. The important property of the information flow is determined -the direction from the source to the receiver. Two possible variants of information interaction of objects are singled out -information transfer and information compensation. The use of optimality principle for information processes of learning is offered. It is shown that the dynamics of learning processes is determined by the characteristics of the used optimization procedure. The gradient procedure for finding the extremum of the goal function is described by the autonomous motion of the dynamic system. For a strictly convex goal function, according to sufficient optimality conditions, the optimization procedure is described by the dynamics of the autonomous motion of a stationary linear unbound dynamic object. The choice of the multiplier for the gradient significantly affects the dynamics of the process, and for a strictly convex goal function the multiplier is equal to the increment vector. The use of a dynamic model determines the number of steps required to achieve the given accuracy.Results. The created models received software implementation and were investigated in practice when solving the tasks of modeling the dynamics of training procedures in the teaching process Conclusions. The carried out experimental researches have allowed to confirm practically operability of the created mathematical apparatus and to consider it expedient for application with the purpose of increase of efficiency of modeling and realization of training procedures. Further perspectives of the research are seen in the coverage of more types of dynamic training procedures, optimizing approaches to their software implementations, and increasing the scale of their coverage with confirmatory experiments.

The advantages, problematic aspects, and a number of key features of the semantics for a highly relevant, practically significant and dynamically developing subject area of computer technology for three-dimensional printing, with an emphasis on the advanced technologies and applied applications that most actively stimulate the development of the three-dimensional printing, are explored. The main sources, and the most appropriate for the application possibilities in solving of the problem on improving for computer systems providing information support for the processes of self-mastering in the field of threedimensional printing, with the acquisition of appropriate competencies are analyzed. According to the results of the analysis in the semantics of the subject area, the expediency on the formation of a knowledge base regarding developers, application areas, and recommendations rules regarding the optimal choice of three-dimensional printing technologies is substantiated. A number of new approaches to building models of knowledge bases for expert subsystems of computer systems on information support for independent work on obtaining competencies in the field of three-dimensional printing have been formed. In particular, for describing the fundamentally factual information of the knowledge base regarding three-dimensional printing technologies, the economic development of threedimensional printing application areas, the display of numerical forecast indicators of the highest costs for equipment for the three-dimensional printing industry, respectively, specific directions of expenses and for certain application areas, formats of the predicates constructions to describe the relevant database of facts are represented. For the purpose of greater clarity, examples of concretization of predicates are given. The research results are applied to improve the educational process in special disciplines for

Context. The problem in substantiation for methods on constructing models of trainer and trainees, taking into account the peculiarities of their information activity, is considered. The object for the study were the models of trainer and trainees as participants in information interaction. Objective. The goal for the work is the solving of the tasks in conceptualization and formalization, aimed at modeling the trainer's subsystem in the framework of information technology for instruction, as well as modeling information flows and information procedures in the model of the trainee's subsystem. Method. The key components of learning systems and processes are the trainer and trainees. The essential features of information interaction between the instructor and trainees are highlighted. The basis is the concept of the information flow, the specific properties of information flows that are characteristic of learning processes and important for their successful progress are identified. Methods for modeling the key components of the training system as an information system are proposed, such as: the trainer`s subsystem, considered from the point of view of the application for learning information technologies; a subsystem of the trainee, represented from the perspective of the use for information flows and information procedures. Results. The proposed models were implemented programmatically and studied practically in the learning processes as a result of working out the modeling tasks for the trainer and trainees as participants in information interaction. Conclusions. The conducted experiment confirmed the effectiveness and validity of the concepts and formalisms, the appropriateness for their implementation in information systems, processes and technologies of teaching with the purpose of increasing the processes efficiency on obtaining and practical implementation of information activity models for the trainer and trainees. Further development of research implies the consideration for a wider range of the information activity aspects on the educator and trainees, as well as the corresponding experimental approbations.