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Item type:Наукова стаття, Latency Reduction in Real-time GPS tracking in Android and the Web-based GPS Monitoring System(IEEE, 2022-12-09) Tsindeliani, Davyd; Povstiana, Yuliia; Lishchyna, Nataliia; Yashchuk, AndriiThe paper focuses on the research aimed to reduce latency in real-time GPS-tracking and implementation of a real-time web GPS-monitoring system based on Android devices that publicly provides access to users' locations. A real-time GPS monitoring system with low latency consists of three main components: a web front-end client, a server part, and an Android application. During the development process, the performance of WebSocket back-end frameworks was researched. The performance of Google Maps and Leaflet (OpenStreetMap) was compared to select the option which provides the best performance in the developed system. The conducted research and the chosen solutions for the implementation of the project made it possible to develop a system that shows high efficiency and performance. The developed software allows any user with an Android mobile device to share their location with others with minimal latency and show their location and traffic history. © 2022 IEEE.Item type:Наукова стаття, Information Technology of Information Security Audit of Objects of Critical Infrastructure(2022-01-19) Kozubtsov, Igor; Lishchyna, Nataliia; Yashchuk, AndriiContext. The scientific and practical task to substantiate the mathematical apparatus on the basis of which the information technology of information security audit of critical infrastructure is developed, which provides verification of compliance of critical infrastructure with the general requirements approved by the Cabinet of Ministers of Ukraine dated 2019-06-19, No.518. A security audit is one of the most effective measures to increase the level of information security of the critical infrastructure. Objective. The purpose of the work is to create information security audit of critical information infrastructure on the basis of separate partial solutions of information technology. Method. On the basis of the general requirements defined by the Resolution of the Cabinet of Ministers of Ukraine dated 2019-06-19, No.18 “On approval of the General requirements for cyber protection of critical infrastructure objects” a set of indicators and evaluation criteria was proposed. The structure of future information technology was offered. In accordance with the structure of information technology, the stages of the methodology of information security audit of critical infrastructure were built. The technique contains a simple mathematical apparatus that simplifies calculations even in Microsoft Excel spreadsheets. In this paper, in contrast to the known methods and techniques, it is proposed to take into account the weight of the importance of information security requirements. As a result, the method has become sensitive to the most critical requirements for cybersecurity of critical infrastructure. Results. Information technology of information security audit of critical information infrastructure objects has been developed. Conclusions. The experiments in Microsoft Excel spreadsheets confirm the efficiency of the proposed method. It is advisable to recommend the development of software that would in practice automate the process of information security audit of critical information infrastructure. The scientific novelty of the obtained result is that for the first time the information technology of information security audit of critical infrastructure facilities was developed, which provides verification of compliance of critical infrastructure facilities with the general requirements approved by the Cabinet of Ministers of Ukraine dated 19 June 2019, No.518. The practical significance of the work lies in the possibility of developing information technology software. Prospects for further research in this area. The presented study does not cover all aspects of this problem. Theoretical and practical results obtained in the process of scientific research are the basis for further study in such areas as the development of information technology software.Item type:Наукова стаття, Project Safety Management Systems of Students with 3D Game Development(2021-08-03) Sivakovska, Olena; Rudynets, Mykola; Yashchuk, Andrii; Redko, Rostyslav; Zabolotnyi, OlegOne of the main directions of the modern state development is the sphere of ensuring the security of the population. New ways to improve the system of safety measures for participants in the educational process in emergencies, which provide increased stress resilience of students and provide support at a high level of their knowledge and skills to act in extreme conditions were been proposed. One of the ways is a project of training in a virtual environment close to real conditions. It is proposed, for the first time, to develop a training-game 3D simulator for psychological preparation and training of students to act in emergencies, using various functions of modeling possible emergencies. The developed software will help to increase the level of socioeconomic protection of students through the game in a 3D simulator, which will be offered to students as homework or before lessons, or as training behavior in emergencies of different nature and under different conditions. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.Item type:Наукова стаття, Performance Comparison of Low-Density Parity-Check (LDPC) Codes for Reliable Communication in Noisy Channels(Tampere: IEEE, 2024-04-24) Yashchuk, AndriiBackground: With significant improvements in communication systems, especially in the context of emerging smart cities, data dependability over noisy channels has become critical. Low-Density Parity-Check (LDPC) codes have gained popularity because to their large error correcting capabilities, which have even approached the Shannon limit, making them indispensable in current communication systems.Objective: The purpose of this article is to conduct a thorough examination of the performance of LDPC codes, with a focus on their effectiveness in noisy communication situations. Understanding the capabilities of LDPC in error correction, decoding complexity, and throughput efficiency across various setups and circumstances is the goal.Methods: A variety of LDPC code configurations, including specialized configurations such as turbo-coded LDPC and finite geometry-based LDPC codes, were investigated. Their performance was evaluated using simulations under various signal-to-noise ratio (SNR) settings, offering a realistic perspective on how they will behave in real-world communication scenarios.Results: Preliminary data indicate that LDPC code configurations vary in performance. The current study focuses on the trade-offs of various arrangements, stressing their unique strengths and disadvantages. This comparison analysis gives a road map for choosing the best LDPC code for certain communication applications, which is especially important for urban areas on their digital transformation path.Conclusion: In the smart cities, LDPC codes offer tremendous potential to improve the reliability and efficiency of communication networks. Understanding their intricacies, strengths, and trade-offs may help influence communication strategy choices, resulting in more connected, efficient, and sustainable urban ecosystems. © 2024 FRUCT.