Advances In Cyber-Physical Systems. – 2022. – Vol. 7, No. 2

Permanent URI for this collectionhttps://ena.lpnu.ua/handle/ntb/61484

Науковий журнал

Засновник і видавець Національний університет «Львівська політехніка». Виходить двічі на рік з 2016 року.

Advances in Cyber-Physical Systems / Lviv Polytechnic National University ; editor-in-chief A. Melnyk. – Lviv : Lviv Politechnic Publishing House, 2022. – Volume 7, number 2. – Р. 63–165 : il.

Зміст


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Content (Vol. 7, No 2)


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    Client-Server Library Index Automation System
    (Видавництво Львівської політехніки, 2022-02-28) Repianskyi, N.; Rak, T.; Lviv Polytechnic National University; IT STEP University
    The goal of the work is to develop a clientserver software system for library index automation, which consists of the user interface, presented as a web page, back-end server layer, and database. The problem of developing a library index automation system has been considered. The developed structure of the library index automation system has been presented. The structure of the library index automation system database has been proposed. The features of designing the user interface of the library index automation system have been considered. The general algorithm of the library index automation system and the system's class diagram have been presented. To make sure that the developed system is secure and stable development testing as well as stress testing have been performed.
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    Multi-agent Coordination with Deferred Asynchronous Messaging in a Distributed Coordination Space
    (Видавництво Львівської політехніки, 2022-02-28) Botchkaryov, A.; Lviv Polytechnic National University
    A method of multi-agent coordination with deferred asynchronous messaging in a distributed coordination space has been proposed. The method has been based on the concept of multi-agent conditional interaction. The method has used: 1) a distributed coordination space in which agents move; 2) the rules of state transitions for the coordination space nodes depending on the movements of agents; 3) the rules of agents move and state transitions depending on the states of the coordination space nodes; 4) a multi-agent coordination game based on the coordination space and the rules. The coordination space has been implemented based on the distributed shared memory of agents. The rules have been applied by exchanging deferred asynchronous messages between agents through the distributed shared memory. The agent’s decisions about movement in the coordination space and their consequences are interpreted according to the rules in asynchronous messages. Delivery of messages to other agents has been deferred until these agents visit the corresponding nodes of the coordination space. This has ensured: 1) mutual exclusion when agents choose conflicting actions, and 2) resilience of multi-agent coordination to agent failures and loss of coordinating messages. Four multi-agent coordination games have been considered as examples. The issue of fault tolerance of the proposed coordination method has been considered. The simulation results show that the use of the method ensures the resilience of multi-agent coordination to agent failures in the considered coordination games.
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    Software Implementation of Modified LSB Algorithm with Shamir`s Secret Sharing
    (Видавництво Львівської політехніки, 2022-02-28) Pavlov, M.; Yurchak, I.; Lviv Polytechnic National University
    Today, it is often necessary to transmit a confidential message of a small volume, while the use of complex cryptographic systems is difficult for some reasons. One of these reasons is the impossibility of using reliable products, which, as a rule, are commercial and unavailable to the average computer user. In modern information society, many services are provided with the help of computer networks and information technologies. Information presented in digital form must be reliably protected from many threats: unauthorized access and use, destruction, forgery, leakage, violation of license agreements, disclaimer of authorship, etc. Information protection is extremely important in both commercial and government spheres. The issues of developing effective methods of protecting digital information, in particular methods of computer steganography and steganalysis, are relevant and important for the state and society. To achieve the goal, it is necessary to propose a method of increasing stego-resistance, determine the effectiveness of the created solution and analyze the obtained results. The object of research is the process of protecting information embedded in a graphic econtainer. The subject of research is methods and algorithms of computer steganography and steganalysis for images. The research methods used in this work are based on steganographic algorithms.
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    Contents
    (Видавництво Львівської політехніки, 2022-02-28)
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    Approaches to Implementing Video Data Management Service with the Context-Aware Recommendation
    (Видавництво Львівської політехніки, 2022-02-28) Pisotskyi, M.; Lviv Polytechnic National University
    The work aims to develop video data management service with a context-aware recommendation. It consists of the user interface which is presented as a website with the mobile application and the server. This paper describes the approaches to implementing video data management service. The decomposition of the task of video data management service development, the use case diagram, the generalized class diagram, the technologies and the services used in the development process have been considered. The developed structure of the video data management service has been presented. Features of designing the user interface of the video data management service have been considered. The issue of testing the developed video data management service has been considered.
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    WifiZoneCloud: A Cloud-Based Wi-Fi Hotspot Platform
    (Видавництво Львівської політехніки, 2022-02-28) Kose, B. O.; Yaya, S.; Coskun, V.; Mantar, A.; Gebze Technical University; Turcom Technology, Istanbul; Beykent University
    Today, there are millions of Wi-Fi hotspots available by diverse service providers such as operators, public spaces, enterprises, and even cities. With the developments on OpenRoaming approach, cloud federation, automatic global roaming, efficient user onboarding and network automation have become important requirements for stakeholders within the ecosystem. This study aims to present a cloud based hotspot platform solution called WifiZoneCloud which enriches the limited hotspot capabilities of new generation firewall, access point and similar network devices; provides roaming between different locations of an institution; keeps the use of the network under control and makes the network reportable, and even performs required logging. With diverse authentication tools, the platform ensures high security according to the needs of users. Above all, these operations are completely administered in the cloud environment. The proposed new platform is likely to pave the way for the establishment of the global Wi-Fi network and present valuable opportunities in the 5G era.
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    Software System for End-Products Accounting in Bakery Production Lines Based on Distributed Video Streams Analysis
    (Видавництво Львівської політехніки, 2022-02-28) Ivanov, Yu.; Sharov, B.; Zalevskyi, N.; Kernytskyi, O.; Lviv Polytechnic National University; Electronic Systems Co. Ltd.
    Among the main requirements of modern surveillance systems are stability in the face of negative influences and intellectualization. The purpose of intellectualization is that the surveillance system should perform not only the main functions such as monitoring and stream recording but also have to provide effective stream processing. The requirement for this processing is that the system operation has to be automated, and the operator’s influence should be minimal. Modern intelligent surveillance systems require the development of grouping methods. The context of the grouping method here is associated with a decomposition of the target problem. Depending on the purpose of the system, the target problem can represent several subproblems, each of which usually accomplishes by artificial intelligence or data mining methods.
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    Features of Development and Analysis of REST Systems
    (Видавництво Львівської політехніки, 2022-02-28) Marii, B.; Zholubak, I.; Lviv Polytechnic National University
    The paper analyzes and presents the architecture of REST systems construction. What is the REST API and why it should be used? It describes the basic principles for what the system could be called Restful. Examples of REST-like systems, their comparison, advantages, and disadvantages of REST, and why this particular architecture was chosen, have been given. It aims at which technologies can be used for the REST system, etc. A description of all technologies used during the development of this system, with all the advantages and disadvantages of using certain technologies and the system in general have been considered. A description of the development environment and some of its functions have been provided. Implementation of the REST system is based on the web application of the forum.
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    Adaptive Learning Service Based on Spacing Effect
    (Видавництво Львівської політехніки, 2022-02-28) Dudok, B.; Lviv Polytechnic National University
    In the article, the adaptive educational service is based on the mechanism of interval repetitions. This system allows the user to study material products without much effort. The technology “Training with reinforcement” has been used as a mechanism of interval repetitions. The technology and an adaptive service of development environment have been reasonably chosen. The structural scheme, the scheme of the algorithm of work, and the scheme of the database structure have been developed. The program has been implemented using the C# programming language and using ASP.NET technologies and its library. The purpose of the study: to develop an adaptive learning service based on the technology of interval repetition.
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    Comparative Analysis of Server and Serverless Cloud Computing Platforms
    (Видавництво Львівської політехніки, 2022-02-28) Kotyk, V.; Vavruk, Ye.; Lviv Polytechnic National University
    Cloud computing is emerging as a powerful computing paradigm for the efficient use of resources. However, decisions to move to cloud computing always remain risky from the customer’s point of view, considering the benefits they get from it. Existing research on cloud computing is more focused on technical aspects such as security, quality, efficiency, etc. However, research on the implementation of cloud computing is at an early stage. Thus, in this article, an attempt is made to create a model for cost analysis and advantages for deciding on the application of cloud computing. It takes into account various organizational parameters, designing server and serverless architectures using Microsoft Azure Portal cloud platform services and policies of this organization. Also, it makes a comparative characterization of these services according to power and price criteria. A comparative description of these services according to capacity and price criteria is also given. It shows the structure of the test tool for assessment. Evaluation parameters and metrics are defined. In addition, this article contains information about approaches to evaluating cloud platforms according to various criteria that are most important for a developer.
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    Software System for Motion Detection and Tracking
    (Видавництво Львівської політехніки, 2022-02-28) Tsiunyk, B.; Muliarevych, O.; Lviv Polytechnic National University
    The goal of the work is to develop a software system for motion detection of and tracking object. It consists of the user interface which is presented as a desktop application. This paper describes the process of developing a desktop software system stage using the latest technologies which will be relevant and easy to maintain in future development and upgrade. The technologies used in the development process, the systems and modules which were integrated into the project, the main approaches to software development, as well as an explanation of why this particular stack of technologies was preferred for the implementation of this software system have been described. To make sure that the developed desktop application meets common optimization requirements it has been tested for resource usage.
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    Coscheduling Spatial Self-organization and Distributed Data Collection in Multi-agent System
    (Видавництво Львівської політехніки, 2022-02-28) Botchkaryov, A.; Lviv Polytechnic National University
    The problem of coscheduling spatial selforganization control processes and distributed data collection processes in a multi-agent system has been considered. The goal of coscheduling is to find and use the possibilities of functional coordination of these processes and increase the efficiency of the multi-agent system due to their parallel execution. An analysis of the main features of spatial selforganization tasks that affect the solution of the problem of coscheduling has been carried out. Variants of the mobile agent robotic platform configuration and the problem of the dependence of spatial self-organization algorithms on the type of robotic platform have been considered. A method of coscheduling of spatial self-organization and distributed data collection by coordinated parallel execution of the corresponding data collection process and the process of controlling mobile agent motion has been proposed. The method of coscheduling is implemented using the interaction protocol of these processes and the algorithm for planning their parallel execution using functional decomposition. The simulation results of the proposed method of coscheduling are given. It is proved that the proposed method of coscheduling provides acceleration of computations in the decision-making module of the mobile agent due to more efficient parallelization. On average, for typical values of parameters of control processes, the proposed method of coscheduling provides acceleration of computations in the decision-making module of the mobile agent by 40.6%.
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    Testing of the Random Codes Generator of Embedded Crypto Protection System
    (Видавництво Львівської політехніки, 2022-02-28) Bilenko, V.; Rahma, R. M. K.; Hlukhov, V.; Lviv Polytechnic National University; The Iraqi Engineers’ Union
    The goal of the publication is to test the random codes generator of the built-in crypto-protection system Following the list of critical technologies in the production of weapons field and military equipment (following the Decree of the Cabinet of Ministers of Ukraine dated 30.08.2017 No. 600-r), an embedded microcontroller system for the protection of information for on-board equipment has been developed. A valuable stage of the system introduction is its research and testing. One of the stages of testing is the verification of the generator of random codes to use for the generation of encryption keys and digital signatures. Based on the previous works and research of the Kalyna algorithm, methods and tools for creating a random code generator have been studied to use in the built-in cryptographic data protection system for data encryption/ decryption and for working with a digital signature. Means of checking generated random codes and comparing themwith existing counterparts have been developed. The purpose of this article is to check the generator of random codes before using it in the built-in information protection system.
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    Software Service for Optimization of the Work Processes in Law Firms
    (Видавництво Львівської політехніки, 2022-02-28) Barsiienko, V.; Vavruk, Ye.; Lviv Polytechnic National University
    The paper presents the stages of creating a software service for optimizing law firms’ work processes and examines its operation’s effectiveness. The relevance of development is due to the need to increase the efficiency of work done in conservative spheres such as the law segment. The authors focus on considering the essential components of the designed system. The main operation algorithms have been presented, and the effectiveness of their development has been proved. A comparison has been made, and the prospects for developing optimization services have been emphasized.