Preview
No 3 (2024)
View or download the full issue PDF (Russian)
https://doi.org/10.21122/2309-4923-2024-3

System analysis

5-11 203
Abstract
This article seeks to ascertain issues in the Commission of Inquiry popularly known as the Zondo Commission that consequently hinder and impede the performance of information systems in the South African public sector. The novelty of this study lies in its thematic perspective on factors that disrupts the public sector from attaining objectives that are spelt out in the South African national strategic goals. Zondo commission final reports are used to explore intrinsic aspects which could explain current threats to information systems. The Zondo Commission covered the period from 2018 to 2022 and reports are available on the State Capture Commission website. The study employs a qualitative research approach by analysing data from the Zondo Commission reports. A qualitative software, Atlas.ti 9 is utilised to demystify macro factors thwarting information systems from operating efficiently and effectively. The usage of the standard software package Atlas.ti 9 is for the purpose of automating the coding procedures for this study by employing specified rules to enable promptness and efficiency in handling vast amounts of textual data, as well as organise, filter, and sort that data. In order to provide direction for this automated analysis, a coding schema is used that identifies the codes or keywords that should be looked for within the text, and should be based on an initial human evaluation of the sample textual data. The textual codes are arranged into relatively high codes or constructions. The coding schema is tested by employing a separate sample of texts in order to check for accuracy and adequateness. The emerging themes from the thematic analysis showed that destabilisation of the public entities’ business systems and structures, non-penalisation of offenders, overstating of tender values and lack of goal congruency were the main reason that affected performance of information systems. The study recommends that government employ robust procurement and monitoring systems.
12-16 150
Abstract
Electric vehicles have such characteristics as low energy consumption and low noise level, and therefore are widely used in modern society, especially for movement in cities and megacities. Active use of electric vehicles (passenger cars and rail and trackless passenger transport) in cities and especially in megalopolises reduces the harmful impact on the ecosystem of the settlement and improves the quality of life in general. Movements become less environmentally hazardous and help to reduce harmful emissions into the atmosphere in places of residence and activities of city residents and tourists. The use of electric vehicles requires their integration with charging stations, and the choice of a reasonable location for the placement of charging stations, which can support the operation of electric vehicles in the largest and large cities, and especially in megalopolises. Based on this, this article examines the problem of placing charging stations for urban electric vehicles. First, the main factors of placing electric vehicle charging stations are analyzed from different points of view, a multi-purpose model for choosing the address of the charging station is built, an algorithmic model is proposed to improve the sparrow search algorithm as the basis for a specific solution method, and finally, the effect of applying the model and solution method is verified by analyzing examples. From the verification results, it can be seen that compared with the traditional genetic algorithm, particle swarm algorithm and other address selection methods, the algorithm proposed in this paper is more optimized, which helps to improve the validity of choosing the address of the electric vehicle charging station and can be widely distributed.
17-21 114
Abstract
Article material is devoted a question of acceptance of the administrative decision on the organisation of search of some subject, capable to apply destructive actions in relation to object of special attention. Characteristic line of a similar problem is necessity of decision-making on management of the divisions appointed for search in the conditions of absence of the authentic initial information on a site of the subject, the limited available forces and sharp deficiency of time.

Management of technical objects

23-34 201
Abstract
The paper provides an overview of various designs of unmanned aerial vehicles of the FPV drone series. Simulation modeling of the design of unmanned aerial vehicles was carried out on the elastic-deformation properties of the body. Frequency resonance analysis and thermal analysis of the design of the flying mobile robot were carried out, which made it possible to analyze the design features of the structure of the flying mobile robot and give recommendations on the selection of materials and elements to ensure the most strength characteristics.
35-40 140
Abstract
The Libyan state, which created the strategic plan for renewable energy 2013–2030, which strives to encourage initiatives aimed at achieving sustainability, is one of the developing nations vying to gain from solar energy in the sector of electrical energy. The agreement to build a 500-MW solar power project made this plan quite evident. The primary barrier to the best possible use of solar energy is pollution, specifically the buildup of dust and bird droppings on solar panels. The efficiency of power generation from solar panels is significantly affected by dust accumulated on them. As a result of the research, quantitative indicators of the impact of dust on photovoltaic systems in Libya were determined and images of the solar panel were obtained with different densities of dust on its surface. The field experiments show that with the increase in dust density, the short-circuit current, open-circuit voltage, and output power of the PV both decrease. The dust with a density of 40 g/m2 can reduce the maximum power of the PV more than on 20 %. The resulting images of the solar panel can be used to assess the degree of dust in automated systems for solar panels cleaning.
41-46 152
Abstract
The article is devoted to the study of the features of the application of regulators built on the use of theoretical provisions of fuzzy logic, when creating autopilots of unmanned aerial vehicles (UAVs). The substantiation of the principles and methods of synthesizing a mathematical model of an autopilot as applied to a multi-rotor UAV, the features of the application of various mathematical models of regulators, their advantages and disadvantages is carried out. A reasonable conclusion is made that the use of traditional approaches based on the use of linear mathematical models of the control object does not ensure the required quality of control in a wide range of UAV application conditions in the presence of restrictions and external influences on the control process. It is proposed to use the principles and methods of fuzzy mathematics, which underlie the increasingly widespread fuzzy logic controllers (FL controllers), when constructing a mathematical model of a UAV autopilot. The construction of a UAV control channel based on the use of a fuzzy logic controller is considered, and a description of the controller structure implemented in the SiminTech computer environment is given. Using mathematical modeling, a comparison was made of the performance and transient characteristics of the NL controller with the PID controller and the P controller as applied to the control system of one of the UAV channels – the roll control channel. It has been established that fuzzy logic controllers used as elements of UAV autopilots, compared to other controllers, provide the necessary quality of transient processes in the UAV control system with resistance to undesirable external influences, which makes these controllers promising for use in nonlinear non-stationary control systems for moving objects, which include UAVs.

Data processing and decision–making

48-53 171
Abstract
The subject of research is the use of blockchain technology in IT medicine. The purpose of the article is to analyze the use of blockchain technology in IT medicine, analyze its use in the world, and propose models: the directions of blockchain in medicine and electronic marketing. The main directions of using blockchain technology in medicine are considered, the application and prospects of using blockchain in medical institutions of Russia and developed countries of the world are determined. The analysis of various projects is carried out. Blockchain technologies allow you to transfer work to a digital medium, digitize all data and work with all documents within a large global information system. Advantages: decentralization, personal ownership of medical data, accessibility and reliability, transparency and trust, verifi of data. A model of information management in IT medicine using blockchain has been developed, including the management of electronic medical records; drug supply chain management and anti-counterfeiting; analysis of medical data; conducting clinical and biomedical research; remote monitoring of patients. The structure of Internet marketing has been developed on the basis of a distributed system using a portal of subsystems for the supply and distribution of medicines to meet the needs of patients for various medical institutions of the Republic of Belarus, with the support of intelligent agents and blockchain technologies.

Information technologies in education

55-61 115
Abstract
The subject of research is the use of blockchain technology in IT medicine. The purpose of the article is to analyze the use of blockchain technology in IT medicine, analyze its use in the world, and propose models: the directions of blockchain in medicine and electronic marketing. The main directions of using blockchain technology in medicine are considered, the application and prospects of using blockchain in medical institutions of Russia and developed countries of the world are determined. The analysis of various projects is carried out. Blockchain technologies allow you to transfer work to a digital medium, digitize all data and work with all documents within a large global information system. Advantages: decentralization, personal ownership of medical data, accessibility and reliability, transparency and trust, verifi of data. A model of information management in IT medicine using blockchain has been developed, including the management of electronic medical records; drug supply chain management and anti-counterfeiting; analysis of medical data; conducting clinical and biomedical research; remote monitoring of patients. The structure of Internet marketing has been developed on the basis of a distributed system using a portal of subsystems for the supply and distribution of medicines to meet the needs of patients for various medical institutions of the Republic of Belarus, with the support of intelligent agents and blockchain technologies.


Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.


ISSN 2309-4923 (Print)
ISSN 2414-0481 (Online)