Advances In Cyber-Physical Systems. – 2019. – Vol. 4, No. 2

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https://ena.lpnu.ua/handle/ntb/52225

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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, 2019. – Volume 4, number 2. – Р. 65–143. : il.

Advances in Cyber-Physical Systems

Зміст


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Content (Vol. 4, No 2)


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Recent Submissions

Now showing 1 - 11 of 11
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    Identification of the Defect in the Elastic Layer by Sounding of the Normal Sh-Wave
    (Видавництво Львівської політехніки, 2019-02-26) Voytko, Myron; Kulynych, Yaroslav; Grynenko, Mychaylo; Kuryliak, Dozyslaw; Karpenko Physico-Mechanical Institute of the NAS of Ukraine
    The Fourier integral transform has been used to reduce the diffraction problem of the normal SH-wave on a semi-infinite rigid inclusion in the elastic layer to the Wiener-Hopf equation. Its solution is obtained by the factorization method. The analytical expressions of the diffracted displacement fields have been represented in any region of interest. The dependences of the scattered field on the parameters of the structure have been given. The properties of identification of the inclusion type defect in the plane layer have been illustrated.
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    Method for Time Minimization of Api Requests Service from Cyber-Physical System to Cloud Database Management System
    (Видавництво Львівської політехніки, 2019-02-26) Pavych, Nataliya; Pavych, Tetyana; Lviv Polytechnic National University
    Authors have analyzed the current state of cloud calculations and discovered the necessity of Application Programming Interface (API) usage in some of the cyberphysical systems (CPhS). The expediency of creating tools to reduce service time of Application Programming Interface requests and effective synchronization of the local and cloud database has been established. The authors clarified one of the main features of data replication. The expediency of using counter generations in the replication process instead of using system timer has been justified. The authors proposed the asynchronous method of accelerated service time for API requests to cloud database management systems using a synchronization accumulative table and registering changes in database with two-step sets of generations. Library that provides implementation of asynchronous API requests for Salesforce cloud management systems has been developed. Any Ruby on Rails application can use this library. Authors have evaluated and carried out benefits for the proposed solutions in test cases. Results of the test cases confirm service time minimization of API requests to the cloud database management system based on the proposed asynchronous method.
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    Perspective Components of Cyber-Physical Systems implementing Conversion, Coding Data Exchange, and User Communication Processes
    (Видавництво Львівської політехніки, 2019-02-26) Nykolaychuk, Yaroslav; Voronych, Artur; Vozna, Nataliia; Nykolaychuk, Lyubov; Pituh, Ihor; Grynchyshyn, Taras; Ternopil National Economic University; Ivano-Frankivsk National Technical University of Oil and Gas; Nadvirna College of National Transport University
    The methodology of structural organization and microprocessor schematics of perspective components of cyber-physical systems has been described in the article. Such components, according to the concept of a multilayer platform proposed by prof. A. Melnyk, implement processes and integrated technologies of measuring information transformation and generalization of the structure of effective coding, digital processing, data exchange, user communication and decision making. Emphasis has been made on providing the utmost minimax, systemic polyfunctional characteristics of these components in structures of cyber-physical systems.
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    Simple Universal Translator as an Alternative Compiler-Compiler
    (Видавництво Львівської політехніки, 2019-02-26) Melnyk, Anatoliy; Kozak, Nazar; Lviv Polytechnic National University
    This article deals with ways of how to implement a simple universal translator. Such universal translator may be an alternative to the compiler-compiler.
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    Data Correction Using Hamming Coding and Hash Function and its CUDA Implementation
    (Видавництво Львівської політехніки, 2019-02-26) Melnyk, Anatoliy; Kozak, Nazar; Lviv Polytechnic National University
    This article deals with the use of block code for the entire amount of data. A hash function is used to increase the number of errors that can be detected. The automatic parallelization of this code by using special means is considered.
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    Numerical Simulation of Cyber-Physical Biosensor Systems on the Basis of Lattice Difference Equations
    (Видавництво Львівської політехніки, 2019-02-26) Martsenyuk, Vasyl; Kłos-Witkowska, Aleksandra; Sverstiuk, Andriy; Bahrii-Zaiats, Oksana; University of Bielsko-Biala; I. Gorbachevsky Ternopil National Medical University
    Cyber physical systems (CPS) include a lot of high complexity computing such as dynamic analysis and verification of continuous dynamic property, analysis and verification of real-time property, analysis and verification of spatial property, scheduling and fault tolerance. In this paper, some of the research directions that we are taking toward addressing some of the challenges involved in building cyber physical systems have been described. Taking into account the features of the cyber-physical sensor systems, the basic model has been modified. Lattice images in biopixels have been modified according to the laws of discrete dynamics. The developed models take into account the interaction of biopixels with each other by antigen diffusion. The comparative analysis of CPS models on rectangular and hexagonal lattices using differenсе equations has been considered in the work. The results of numerical simulations in the form of phase plane images and lattice images of the probability of antigen to antibody binding in the biopixels of cyber-physical biosensor systems for antibody populations relative to antigen populations have been received in the paper. The comparative analysis of the results of numerical modeling of mathematical models of cyber-physical biosensor systems on rectangular and hexagonal lattices using lattice difference equations with delay has been considered.
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    The Methods of Choice the Wavelets for One Dimensional Signals Processing
    (Видавництво Львівської політехніки, 2019-02-26) Lagun, Ilona; Lviv Polytechnic National University
    The paper describes the problems of the effectiveness increasing in the selection of base functions for the processing of different types of one-dimensional signals in the wavelet domain. The efficiency of representing signals in the wavelet domain has been shown; their analysis and processing are related to the choice of base functions. The basic methods and algorithms for selecting base functions are defined, in which the choice of optimal wavelets has been carried out according to a particular criterion for certain types of signals. Methods have been presented for assessing the efficiency of the choice of base wavelets by the criterion for the ratio of the energy of the wavelet coefficients to the entropy of energy distribution of wavelet coefficients, the criterion for estimating the correlation coefficient, and the information criterion. The universal index of quality of the signal has been proposed and substantiated for the first time as a new criterion for choosing a wavelet and the method has been improved for the choice of base wavelets using a genetic algorithm according to the universal signal quality index criterion. The method of multi-criteria optimization of the choice of base wavelet for the processing one-dimensional nonperiodic signals based on the tools of fuzzy logic has been proposed and developed, which made it possible to improve the efficiency of signal processing.
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    PSoC4 based IntelLigent Water Consumption Meter
    (Видавництво Львівської політехніки, 2019-02-26) Komarenko, Oleksandr; Hrytsyk, Ivan; Lviv Polytechnic National University
    An intelligent water consumption meter system has been designed. The measurement system has been developed using Cypress Semiconductor PSoC4TM systemon-a-chip. The hardware part has been designed to perform water flow measurements, temperature and pressure monitoring. Developed Android application has been used to communicate with hardware using the Bluetooth LE interface. Overpressure detection procedure was developed to prevent emergency cases. The user has been able to monitor water use in real-time, configure system remotely and control external pipe valve. Advanced mode has been added to reset measuring results, select liquid type and recalibrate system should it be necessary.
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    Contents
    (Видавництво Львівської політехніки, 2019-02-26)
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    GDP in Value as a Measure for Evaluating Annual Data Flow Increase on IoT
    (Видавництво Львівської політехніки, 2019-02-26) Zhukov, Igor; Pechurin, Nickolay; Kondratova, Lyudmila; Pechurin, Sergey; National Aviation University; nstitute for Applied System Analysis of NTUU “Igor Sikorsky Kyiv Polytechnic Institute”
    The article deals with the problem of assessing the primary data load on the IOT, generated by the year. GDP in the money presentation has been used to estimate the amount of information that enters the network directly from things. Having advanced the postulate that the amount of data emanating from a thing is proportional to the product of its mass (thing) by its specific orderliness, it is concluded that it is possible to use a volume of the generated order principle. Dual model allowing to estimate objective thing’s prices, has been proposed.
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    Distributed Adaptation of the Functional Integration Structure of a Multi-Agent System in a Dual-Tasking Environment
    (Видавництво Львівської політехніки, 2019-02-26) Botchkaryov, Oleksii; Lviv Polytechnic National University
    The paper considers the problem of distributed adaptation of the functional integration structure of a multi-agent system in a dual-tasking environment from the point of view of organizing multi-agent search and use of the functional emergence effect provided by different structures of functional integration. The considered problem belongs to a wider class of problems of structural adaptation and self-organization. Models of functional integration, in particular, models based on general quantitative characteristics of the functional roles distribution of agents and models based on local qualitative characteristics of the functional roles distribution of agents, taking into account the specifics of functional links established between agents have been considered in the paper. The problems of the distributed adaptation of the functional integration structure have been analyzed, including the problem of the functional specialization of agents in a multitasking environment. Various ways of organizing structural changes have been considered, including multi-agent parametric adaptation based on a local structural parameter. Multi-agent structural adaptation based on reinforcement learning methods, in particular, multi-agent structural adaptation based on the normalized exponential function method (MSA-softmax) and multi-agent structural adaptation based on the upper confidence bound method (MSA-UCB) has been proposed. The distributed adaptation methods simulation results have been presented, which showed the advantage of multi-agent structural adaptation over multi-agent parametric adaptation.