Факультет інформатики

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Browsing Факультет інформатики by Subject "conference materials"

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    Blockchain-based wildlife data-management framework for the WWF bison rewilding project
    (2019) Dryga, Andrii; Tsiulin, Sergey; Valiavko, Mariia; Qing, Yang; Reinau, Kristian Hegner
    Mass digitalization, remote sensors, and flexible database solutions encourage organizations to look closer at new technologies as an efficient management tool. In these conditions, the leveraging of blockchain and wireless tracking devices represents a field of fargoing technology development and can be used for wildlife data management. The purpose of this research is to introduce the applicable solution for the case provided by the World Wildlife Fund (WWF) regarding bison population rewilding in Eastern Europe. The goal of the paper is to create a data management framework, which combines information into one multi-integrated system visible to stakeholders. The paper theoretically extends the existing MIT OPAL blockchain-based model, which was implemented for the WWF bison rewilding project, showing a solution from managerial and technical perspectives. The proposed platform is able to provide secure geospatial wildlife data, increase intention to make donations to the project and facilitate the conditions for a better tourism experience. We found that such a system can have a positive effect on the project’s cost reduction, flexibility in redirecting manpower within the region and become a useful tool for decision-makers.
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    On supervising and coordinating microservices within web applications on the basis of state machines
    (2024) Oletsky, Oleksiy; Moholivskyi, Vitali
    An approach to supervising and coordinating microservices by applying state machines has been developed. Both orchestration and choreography approaches to coordinate microservices are considered. A prototype of a library based on this approach is reported. Such advantages as central control over complex distributed execution flow, declarative description of the system and the workflows within it, rich facilities for visualization, possibilities for applying mathematical methods of analysis, keeping track of long-running background jobs, monitoring the current state of a system, testing coordination logic with mocked implementation details, and debugging coordination issues using only state machine without running microservices are illustrated on examples. A way to estimate the importance measures of specific microservices based on PageRank-like techniques is suggested. Some suggestions for using other mathematical methods are discussed.