The article offers a systematic approach to the method of developing mathematical models of a chemical-technological system (CTS) in conditions of deficit and fuzziness of initial information using available data of various types. Based on the results of research and processing of the collected quantitative and qualitative information, mathematical models of the reactor ...

The issues of managing the sustainable development of an enterprise in the context of digitalization have been studied. The digitalization process is interpreted as a tool for transforming the enterprise at the levels of control, production and management, which ensures the sustainable development of the enterprise. Describes methods and tools for research and implementation ...

Methylammonium lead iodide perovskite materials have been shown to be efficient in photovoltaic devices. The current fabrication process has not been perfected, leaving defects such as site vacancies, which can trap charge and have a detrimental effect on photogenerated charge carriers. Here focus is placed on the effect a Pb site vacancy has on the charge-carrier dynamics following ...

The article presents measure to optimize the operating modes of power transformers in order to minimize losses of electrical energy. The influence of actual voltage and service life of power transformers on electric power losses is shown. It was proposed to determine the economic capacity of power transformers taking into account the indicated factors, as well as taking ...

The article presents the results of vertical static load tests of diametral and deep bored piles specially conducted at the construction site of EXPO-2017 in Astana, Kazakhstan. The methodology for determining the bearing capacity of the pile is summarized. Bored piles with a length of 31.5 m and a diameter of 1000 mm were tested. Vertical static load tests were conducted ...

In this work, the results of a study regarding the methodological aspects of organizing training courses in robotics in a school educational process are presented. In the course of the study, an analysis of the problem was carried out and the conditions for the effective implementation of teaching robotics to students of a comprehensive school based on developing ...

The article presents the results of an experimental study of the changing the ionic composition of water under the influence of acoustic cavitation. The effect of acoustic radiation on the physical and chemical properties of water was studied in the frequency range 20 Hz - 50 kHz. It is shown that the ultrasonic range leads to an increase in the concentration in the area ...

In this study, we demonstrate that introduction of rare-earth elements, R = La or Pr, into the Bi-O charge reservoir layer of BiCuSeO leads to an increase of both the charge carrier concentration and the effective mass. Although the charge carrier mobility slightly decreases upon Bi3+ to R3+ substitution, the electronic transport properties are significantly improved in a broad ...

The paper addresses the issue of developing methodological support for digital platforms and services in the field of strategic planning for the resource provision of the agricultural economy. It is shown that the methodological apparatus embedded in software complexes makes it difficult to justify the required amount of financial resources for expanded (simple) ...