Scientific journal of the Ternopil national technical university最新文献

{"title":"Evaluation of user interfaces of various flight controllers for UAV","authors":"Mykhailo Matiychyk, Mykhailo Fuzik, O. Rybalchenko, D. Matiychyk, Natalyа Suvorova","doi":"10.33108/visnyk_tntu2022.03.115","DOIUrl":"https://doi.org/10.33108/visnyk_tntu2022.03.115","url":null,"abstract":"Planning a flight task by a remote pilot is a very important stage in the process of preparing a flight of an unmanned aerial vehicle. The smallest mistakes made at the same time can lead to irreparable consequences for both the UAV and others. The number of remote pilot errors can be reduced by reducing the speed of flight task planning. However, in actual operation, this can slow down flight preparation and, as a result, reduce the efficiency of the process as a whole. Among other things, the speed of flight planning is influenced by the user interface itself, which is a means of communication between the remote pilot and the machine – the on-board flight controller It is known that human-machine communication interfaces are very diverse, but in general they should contribute to the smooth and error-free entry of the input information into the memory of the machine (flight controller), which will later serve as a guide for the machine in its actions. At the same time, there is insufficient evidence to apply quantitative interface assessments (assessments of means, rules and methods and techniques) to already known flight controllers. The paper presents the results of the analysis and research of the user interfaces of two flight controllers according to the criteria of ease of data entry during planning, the total number of operations during the planning of all flight stages, and the amount of work performed within each operation, as well as the level of visualization (display) of information on the monitor of the ground control station of the unmanned aerial vehicle. Relative weighting factors based on rating methods were applied to each of the mentioned criteria. After taking into account the results of the evaluation, the ratings of such dispatchers as Pixhawk and Veronte were established.","PeriodicalId":21595,"journal":{"name":"Scientific journal of the Ternopil national technical university","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91300022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Economic aspects of information protection under present large-scale cyber-attacks conditions","authors":"Ruslana Prus, Svitlana Yatsyuk, Ludmila Hlynchuk, V. Mulyar","doi":"10.33108/visnyk_tntu2022.02.063","DOIUrl":"https://doi.org/10.33108/visnyk_tntu2022.02.063","url":null,"abstract":"The main attacks that have caused irreparable damage to enterprises and organizations around the world in recent years and radically changed the attitude to cyber-attacks and the fight against them are analyzed; systematized scientific and technical prerequisites for the security of information technology; substantiated the tasks facing the developers of modern information systems; the consequences of attacks on information are investigated and the main factors influencing financial losses due to security breaches are identified.","PeriodicalId":21595,"journal":{"name":"Scientific journal of the Ternopil national technical university","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84749703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling the risks of the confession process of the accused of criminal offenses based on survival concept","authors":"Olha Kovalchuk","doi":"10.33108/visnyk_tntu2022.04.027","DOIUrl":"https://doi.org/10.33108/visnyk_tntu2022.04.027","url":null,"abstract":"Based on statistical survival analysis, the assessment and forecasting of the risks of pleading guilty to criminal offenses in conditions of incomplete data are carried out. Risk function is constructed to estimate the probability of confession of suspects at certain stages (time periods) of the trial. The Kaplan-Meier model is applied to calculate the chances of obtaining confession evidence after the end of the trial in criminal proceedings. Differences in the decision to admit guilt for two groups of defendants: in the commission of a criminal offense by one person and a group of persons are investigated. Cox regression model is constructed to establish the interconnection between the stages of the pre-trial investigation, at which the accused gives confessions, with the duration of the investigation and the method of prosecution.","PeriodicalId":21595,"journal":{"name":"Scientific journal of the Ternopil national technical university","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91258589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical research of the effect of rotational motion on the shape of surface of the deposited layer","authors":"M. Mykhailyshyn, V. Havryliuk, Ch.V. Pulka","doi":"10.33108/visnyk_tntu2022.02.117","DOIUrl":"https://doi.org/10.33108/visnyk_tntu2022.02.117","url":null,"abstract":"Different methods of surfacing are using to strengthen machine parts. The process of simultaneous induction surfacing consider in the article. The surfacing will perform with using simultaneous centrifugal rotation compared to the traditional surfacing scheme. The disk is located in a fixed position during the entire surfacing process according to the traditional scheme. The rotational movement is carrying out with a certain angular velocity at the time of fusion of the metal layer. The working time of the part increased due to centrifugal rotation. Because the layer of molten metal moves to the edge of the part, increasing its volume. The edge of the part receives the greatest load to the moment of operation.","PeriodicalId":21595,"journal":{"name":"Scientific journal of the Ternopil national technical university","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86508592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the reverse transformation methods complexity of the residual number system for secure data storage","authors":"S. Kulyna","doi":"10.33108/visnyk_tntu2022.03.021","DOIUrl":"https://doi.org/10.33108/visnyk_tntu2022.03.021","url":null,"abstract":"The methods of conversion from the residual number system to the decimal number system based on the classical Chinese remainder theorem (CRT) and its improvements CRT I, CRT II are considered in this paper. Analytical dependences of the time complexity of the specified methods are analyzed and constructed. As the result of carried out investigation, it is established that CRT II is characterized by greater efficiency compared to the other methods mentioned above. Examples of the implementation of direct and reverse conversion of RNS based on the application of CRT , CRT I, CRT II are given.","PeriodicalId":21595,"journal":{"name":"Scientific journal of the Ternopil national technical university","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90038598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Some aspects of autonomous cyber-physical systems diagnostics by their qualitative state","authors":"S. Volkov, A. Prokopenko, S. Asabashvili, K. Volkov","doi":"10.33108/visnyk_tntu2022.04.122","DOIUrl":"https://doi.org/10.33108/visnyk_tntu2022.04.122","url":null,"abstract":"Recent trends in the development of cyber-physical systems are aimed at their autonomy and self-organization. In this context, the question of monitoring and diagnosing possible evolutionary changes that carry certain risks is very important. This study aims to analyze and determine the approach to monitoring and diagnosing autonomous cyber-physical systems according to their qualitative state. The work of monitoring and diagnostic systems and their interaction with autonomous cyber-physical systems in different scenarios in making decisions about evolutionary transformations by the latter are considered. The ways of further development of monitoring and diagnostic systems based on the assessment of the qualitative state of the studied system are determined.","PeriodicalId":21595,"journal":{"name":"Scientific journal of the Ternopil national technical university","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79785299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Some features of automatic electric arc surfacing under the flux with controlled periodic change of modes","authors":"V. Lebedev, V. Tyschenko, Sergiy Loy, Оleksiy Khalimovskyy","doi":"10.33108/visnyk_tntu2022.02.101","DOIUrl":"https://doi.org/10.33108/visnyk_tntu2022.02.101","url":null,"abstract":"The development and application of automatic electric arc surfacing under flux with controlled periodic change of modes makes it possible to expand significantly the possibilities of traditional technological processes of surfacing. The carried out experimental investigations make enabled us to determine the advantages of the welding process with modulation of modes in comparison with welding in stationary mode. It is established that the parameters of the modulated welding current (frequency, sparseness) determine the degree of influence on the physical and mechanical characteristics of the welded metal and in most cases improve them compared to the characteristics of stationary mode. The result of the analysis defines that in the pulse mode it is possible to achieve the reduction of inclusions from the composition of the flux by almost 30%. This reduction is an additional factor in ensuring the characteristics of strength (hardness, wear resistance) of the weld roller and weld.","PeriodicalId":21595,"journal":{"name":"Scientific journal of the Ternopil national technical university","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76356742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamics of interaction of components during mixing","authors":"I. Stadnyk, Volodymyr Piddubnyy, Andrii Chagaida, V. Fedoriv","doi":"10.33108/visnyk_tntu2022.03.086","DOIUrl":"https://doi.org/10.33108/visnyk_tntu2022.03.086","url":null,"abstract":"The effect of mechanical action on the mixing and whipping of the mixture of components contributes to the formation of a three-dimensional spongy-reticulate continuous structure of the gluten frame, because it determines the elastic and elastic properties of the medium and is relevant in dispersing gas in a liquid. That is why, the objective of the research was to establish the relationship between the gas-holding capacity of the medium and the energy spent on the hydration of the components. The research solved the problem of determining the gas-holding capacity of the medium with variable parameters of the height of the liquid phase depending on the intensity of mixing, time of the transient processes of formation of the full volume of the gas-liquid medium, time of the transient process of the output of the dispersed gas phase. The difference in levels before the formation of the gas phase and in the mode of mixing (aeration) determines the value of the gas-holding capacity. In this regard, we came to the conclusion about the expediency of the complete destabilization of the established regimes due to the change in the modes of action of the working body in the flow system. At the same time, one more feature should be mentioned. Part of the gas phase that existed and continues to exist in a new regime after mixing enters the regime of the transition process. Therefore, the most effective mixing occurs in case of compliance with the shifted mode of dosing of components in a suspended state and the mechanical influence of the working body. Considering the problems and conditions for mixing the scam, the requirements for the design of the mixer are determined, and also it is established that feeding of components should last at least 45 seconds. During this period, hydration occurs and energy consumption is reduced. This approach of the formation of pulsed flows of surface contours during the interaction in a suspended state of the dosing components, under the rotating action of the disc-shaped working body and the forces of gravity, creates the conditions for intensification of transferring the mass and biochemical processes under conditions of thermodynamic equilibrium with the corresponding desorption bonds of the dissolved part of the gaseous phase and liquid, which reveals a new method of mixing and allows further use of cylindrical working chambers in structural calculations.","PeriodicalId":21595,"journal":{"name":"Scientific journal of the Ternopil national technical university","volume":"72 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90643283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of oblique geometry of cutting inserts of finishing face mills on cutting forces","authors":"Heorhii Vyhovskyi, N. Balytska, Mykola Plysak, V. Otamanskyi","doi":"10.33108/visnyk_tntu2022.04.054","DOIUrl":"https://doi.org/10.33108/visnyk_tntu2022.04.054","url":null,"abstract":"The feasibility of using face milling for the final formation of the parts surface layer is confirmed by a large number of scientific works. At the same time, there are significant advantages of technological processes using face mills for oblique cutting, equipped with superhard materials, with a spiral-stepped arrangement of cutting inserts. This work is devoted to the study of the influence of the inclination angle of the oblique face mill cutting edge on the cutting forces when processing the workpiece flat surface made of gray cast iron and carbon tool steel using the Deform-3D program. The influence of the cutting edge inclination in the range from 0 to -45º on the smoothness of penetration of the face mill inserts into the workpiece is discussed.","PeriodicalId":21595,"journal":{"name":"Scientific journal of the Ternopil national technical university","volume":"91 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89849805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distance measures-based information technology for identifying similar data series","authors":"A. Baturinets","doi":"10.33108/visnyk_tntu2022.01.128","DOIUrl":"https://doi.org/10.33108/visnyk_tntu2022.01.128","url":null,"abstract":"The aim of the work is to develop and implement a technology for identifying similar series, and to test on series of data represented by hydrological samples. The subject of the study is the methods and approaches for identifying similar series. The object of the study is the process of identifying similar series, which are represented by certain indicators. The task is to propose and implement distance measures, where one of them takes into consideration the similarity between the values of the series and their relationship, and another is based on a weighted Euclidean distance taking into account the need to actualize the values that are the most important under certain conditions of the task; to implement a technology to find similar series represented by certain indicators values; to obtain a more resilient solution, to implement a procedure for determining a set of similar series based on the results obtained for each individual distance; the results should be analyzed and the conclusions have to be drawn dealing with practical application of the technology. The following methods were used: statistical analysis methods, methods for calculating distances, and similarity between data series. The following results were obtained: the technology for similar data series detection has been implemented; two distance measures were proposed and described as a part of the technology implemented; a procedure for determining a set of similar rows was implemented that was based on the obtained distances calculation. The scientific novelty of the research under discussion involves: Euclidean weighted distance was described and applied taking into account the actuality of data series values; a new measure of distance has been described and applied that allows both the degree of similarity between the values of the series and their correlation to be taken into account, as well as a technique has been developed for determining similar series from a set of selected distance measures. The practical importance of the developed and implemented technology consists in the following possibilities application to data series of different applied fields: conducting an assessment and identifying some similar series, in particular as an intermediate step in the analysis; in addition, the proposed distance measures improve the quality of identifying similar data series. In our further research, we plan to investigate the possibilities of lengthening the data series and filling in the gaps with values from other series defined as similar ones.","PeriodicalId":21595,"journal":{"name":"Scientific journal of the Ternopil national technical university","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91526875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}