Електронний архів

Національного університету "Львівська політехніка"

Архів зберігає опубліковані наукові матеріали переважно працівників Університету. Також доступна можливість "самоархівування"

 

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Recent Submissions

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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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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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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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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.