https://works.vntu.edu.ua/index.php/works/issue/feed Scientific Works of Vinnytsia National Technical University 2020-10-15T14:46:52+03:00 Petro D. Lezhniuk lezhniuk@praci.vntu.edu.ua Open Journal Systems <p>Scientific Works of Vinnytsia National Technical University (ISSN&nbsp;2307-5392) is online quarterly&nbsp;peer-reviewed&nbsp;scientific journal on technical sciences.&nbsp;It is English version of the journal&nbsp;<strong>Praci Vinnytskogo Natsionalnogo Technichnogo Universitetu</strong>&nbsp;(ISSN&nbsp;2307-5376).</p> https://works.vntu.edu.ua/index.php/works/article/view/565 ANALYSIS OF THE IDENTIFICATION ERRORS AND WAYS OF ACCURACY IMPROVEMENT OF THE SYSTEMS OF BIOMETRICAL IDENTIFICATION 2020-10-15T12:00:54+03:00 Gennadyi Novitskyi pclife85@gmail.com Serhyi Zlepko praciZS@gmail.com Leonid Koval praciKL@gmail.com Ivan Kryvoruchko praciKI@gmail.com <p><em>Identification and authentication provides safe protection of the personal data ,realizes reliable access to the objects or confidential information, results of scientific research, etc. Especially important becomes the combination of the passwords with the biometrical characteristics of a person, as a result , the reliability of the access system increases thousandfold. The paper considers basic properties and principles of the biometric identification systems, errors of the main methods of biometric identification have been analyzed and classified: Static methods ( fingerprint identification, iris identification, face or hand geometry, venous picture of the hand ,eye retina) and dynamic(voice identification, fingertrip identification, signature identification). Principle of hand vein pattern obtaining, which consists in IR absorption by blood hemoglobin has been substantiated, according to which the necessary vein picture is determined by the degree of the emission reflection and the level of the blood stream visualization. The comparative analysis of several methods of identification by the veinprints has been performed and the method with the best characteristics has been selected. The analysis of the control points of the vascular pattern (minutia) has been performed. For optimal data taking new technique of hand scanning, using blocking device is introduced, the given technique enables to reduce to minimum the veinprint shift of the investigated person and makes its comparison with the sample easier. The choice of the commercial sample of the vein reader – scanner, which can be quickly and qualitatively adapted in the general structure of the identification system is substantiated. For the skeletonization of the binary image the method of patterns is selected, this method enables to process the data rapidly and obtain the data matrix – coordinates of the minutia and their type. For the improvement of the functional model of the person identification process by the hand vein pattern the identification protocol was introduced to the structure of the identification process, the realization of this protocol stipulates adequate taking a decision “identified / unidentified”.</em></p> 2020-06-30T00:00:00+03:00 ##submission.copyrightStatement## https://works.vntu.edu.ua/index.php/works/article/view/569 SUBSTANTIATION OF THE POSSIBILITY OF THE FLUID DISCHARGE IN THE SEWAGE SYSTEM, OBTAINED BY MEANS OF THE SOLID HOUSEHOLD WASTE DEHYDRATION IN THE PROCESS OF THE LOADING INTO THE DUST-CART 2020-10-15T14:31:40+03:00 Oleg Bereziuk berezyukoleg@i.ua <p>In recent years the total area of the solid household waste landfills and sites has considerably increased, this threatens with the pollution of the environment with the harmful substances, including high toxic filtrate. The aim of the research is the substantiation by means of the regressive analysis of the possibility of the discharge in the sewage system the fluid, obtained by means of dehydration of the solid household waste during the loading in the dust-cart, that is actual scientific-engineering problem. The adequate regressive exponential dependence of the percentage ratio of the fluid, discharged from the solid household waste to actual productivity of the waste treatment plants of the sewage system on the population of the city has been obtained . Graphic dependence of the percentage ratio of the fluid, removed from the solid household waste, on actual productivity of the sewage treatment facilities system on the population of the city, that enables to illustrate the given dependence and show the sufficient convergence of the theoretical results with actual results. It is determined that in the cities with the population of at least 200 thousand people, there is a possibility to discharge in the sewage system the fluid, obtained as a result of solid household waste dehydration during the loading in the dust-cart as the percentage ratio of the fluid, removed from the solid household waste to actual productivity of the sewage treatment facilities does not exceed the scientifically grounded value of 0,2%. For the cities with the population of less than 200 thousand&nbsp; people the dependence for the determination of the percentage volume of the possible safe dehydration of the solid household waste with the discharge of the fluid in the sewage system, that is one of the components for the solution of the problem of the creation scientific-engineering fundamentals for&nbsp; the design of high efficient working organs of the mechanisms, intended&nbsp; for the primary processing of solid household waste is suggested.</p> 2020-06-30T00:00:00+03:00 ##submission.copyrightStatement## https://works.vntu.edu.ua/index.php/works/article/view/571 ANALYSIS OF THE CONTAINER TRANSPORTATIIONS BY RAILWAY IN UKRAINE 2020-10-15T14:46:52+03:00 Oleh Strelko olehstrelko@gmail.com Yulia Berdnychenko praciBY@gmail.com Illia Kovalskyi praciKI@gtmail.com Vitaliy Vozniuk praciVV@gmail.com <p>Favorable geographical position of Ukraine on the map of Eurasian continent stipulates&nbsp; &nbsp;its enormous potential as the transit country, country the bridge between the West and the East, the North and the South. Rapid development of the container transportation requires corresponding national solutions for achieving economic progress in the increase of the cargo traffic. The given research studies the process of the containerization on the railway transport of Ukraine. In the process of the research main factors proving the necessity of the introduction of larger volumes of the container delivery by the railway transport are determined. The relevance of the container system of cargo delivery in the context of the international transportation is studied. Indices of the container transportation volumes on the European market of the transport services are considered. Basic advantages and disadvantages in the process of the container transportation are determined. The analysis of the studies, devoted to the container transportation, showed that the problems of its efficient realization in Ukraine, the countries of Eastern Europe and complex procedures of the implementation are not completely studied. The results of the investigations represent mainly technical and technological aspects of the multimodal transportation, problems of the economic safety are not considered. On the base of the research, carried out it is determined that the development of the system of the container transportation by the railway transport in Ukraine is a rational means of improving the quality of cargo transportation organization., which due to &nbsp;the economic efficiency will reduce not only the expenses for cargo transport but also the &nbsp;time for handling operations. For Ukraine the container transportation is the prerequisite of the sustainable development of the transport complex in the context of both internal and international communication, as such type of the transportations allows the usage of the intermodal kinds of transportation, that, in its turn, will improve the interaction of various types of transport.</p> 2020-06-30T00:00:00+03:00 ##submission.copyrightStatement## https://works.vntu.edu.ua/index.php/works/article/view/566 IMPROVEMENT OF THE POWER SUPPLY SYSTEM RELIABILITY BY MEANS OF UNMANNED AERIAL VEHICLES 2020-10-15T12:21:58+03:00 Oleg Grib praciGO@gmail.com Igor Karpaliuk humpway@gmail.com Sergey Shvets praciSHS@gmail.com Natalia Zaharenko praciZN@gmail.com <p>Energy system of Ukraine comprises the distributed electric grids of complex configuration, the generating facilities and consumers of electric energy are located at large distances.Numerous objects of energy branch require constant monitoring.However, the upgrading of theequipment takes place at a slow rate that leads to the increase of the wear. Depreciation of equipment in the power supply system of Ukraine affects the reliability of power supply and quality indicators.Ageing and wear of the equipment results in the increase of accidents and emergencies.As it is impossible to completely replace the outdated equipment simultaneously, the concept of gradual replacement is adopted. In such conditions, maintaining of the operating condition of the equipment is ensured by the routine maintenance, performed by the operating crew. But the quantity of the staff constantly decreases, that is why, to maintain the operating conditions of the system new technologies should be developed and introduced which enable to detect the exact location of the fault and its character. The dependence of the system reliability on the frequency of riding inspections is shown. To achieve standard reliability values, the frequency of inspections should be a function of the wear of the equipment, and not a constant. Calculations are presented, showing the need to increase inspections to maintain the reliability of the system at the proper level. The increase in the frequency of inspections leads to the increase in the cost of servicing the power system, and as a result, the increase in the cost of electric energy. The authors suggest using unmanned aerial vehicles for the inspections, determination of the location of the accident. It is shown that the use of unmanned aerial vehicles will increase the number and quality of inspections, thereby increasing the reliability of the electric power system and, accordingly, reducing the cost of electric energy transportation.</p> 2020-06-30T00:00:00+03:00 ##submission.copyrightStatement## https://works.vntu.edu.ua/index.php/works/article/view/567 REGRESSIVE DEPENDENCE OF THE BIOLOGICAL PROCESSES ACTIVITY IN SOLID HOUSEHOLD WASTE ON THE DEGREE OF ITS COMPACTION IN THE COURSE OF TIME 2020-10-15T12:31:42+03:00 Оleg Bereziuk berezyukoleg@i.ua Svitlana Gorbatiuk praciGS@gmail.com Ludmila Bereziuk praciBL@gmail.com <p>In recent years the total area of solid waste landfills and landfill sites, including overloaded sites has increased, this violates the ecological norms, besides the overloaded landfills are&nbsp; &nbsp;the objects of intensive ecological loading, threatening the pollution of the environment with harmful substances: heavy metals, microorganisms (colibacilli, streptococci, staphylococci and ascarids, high toxic filtrates,&nbsp;landfill gas, etc). The paper contains the results of determination of the regressive dependence of the biologic processes activity in the solid household waste on the degree of the compaction with the course of time by means of planning of multifactorial experiment applying Box-Wilson method. Аdequate regressive dependence of the biologic processes activity in solid household waste on the degree of the compaction in the course of time in the form of the quadratic regression with the effects of interaction of the first order is obtained. The adequacy of the regression model was verified by means of Fischer test and the significance of the regression coefficients – by Student`s test. The suggested mathematical model proves the need of the waste compaction before burying to minimize the negative impact on the environment and can be used for the design of the mechanisms of waste compaction in the dust-carts. By Student’s test it was determined that among the studied factors of the impact the activity of biological processes in solid household waste depends greatly on the density and to a lesser extent – on time. The response surface of the efficiency function – dehydrogenase activity of the solid household waste and its 2D cross-section in the plane of the impact parameters is constructed, which allows to represent the obtained dependence and the character of the simultaneous impact of several factors on the efficiency function.</p> 2020-06-30T00:00:00+03:00 ##submission.copyrightStatement## https://works.vntu.edu.ua/index.php/works/article/view/568 STUDY OF THE ORIENTATION ERRORS IMPACT ON THE ACCURACY OF GUIDANCE 2020-10-15T14:27:06+03:00 Оleg Biloborodov 22bredly@gmail.com <p>Separate samples of the engineering systems influence different objects without the self- control regarding the&nbsp; accuracy of the impact. From technical point of view this implies &nbsp;the need to substantiate the requirements concerning the accuracy of the guidance and performing &nbsp;the studies &nbsp;of the factors, influencing the accuracy characteristics of the guidance systems. If we consider the &nbsp;dependence of the guidance errors (&nbsp; in &nbsp;the azimuth and elevation&nbsp; angle) on the orientation errors, then their functional dependence will be determined . In such case it is not correct to apply the formula for the determination of the root-mean-square deviation of the sum of the independent random values and there appears the task&nbsp; of determining the impact &nbsp;of such class of errors in the general errors and determination of the possible ways of their minimization. The results of the study of the orientation errors impact on the guidance accuracy of the directed system are presented. For emitting radioengineering systems referencing and orientation errors are approximately 60% of the guidance errors. The given research shows the heterogenous character of the orientation errors impact (both by the value and by the degree of the impact) on the guidance errors. Analytical study of the guidance errors in the &nbsp;multidimensional area of arguments &nbsp;has some problems, taking into consideration large volume of the analytical expressions and multidimensional character of the dependences. The results of the simulation experiment of determining the character of the orientation errors impact on the indices of the guidance errors are submitted. It was determined that the guidance errors also depend on the target &nbsp;direction. The study of the guidance errors in the area of the value of the possible target&nbsp; directions was performed . The availability of the areas of minimal and maximal guidance errors in the area of the azimuth and elevation &nbsp;angle values &nbsp;was determined, the location of these areas depend on the relation of the orientation errors values. For the application of the facilities of the directed action the usage of the method of timely rational orientation of the carrier for the reduction of the guidance errors is suggested.</p> 2020-06-30T00:00:00+03:00 ##submission.copyrightStatement##