O. Kozhokhina, S. Yutskevych, O. Radchenko, V. Gribov, O. Chuzha
{"title":"Method of Statistical Data Processing for Two-Stage Fatigue Tests","authors":"O. Kozhokhina, S. Yutskevych, O. Radchenko, V. Gribov, O. Chuzha","doi":"10.1109/ACIT49673.2020.9208864","DOIUrl":"https://doi.org/10.1109/ACIT49673.2020.9208864","url":null,"abstract":"Prevention of degradation processes and prediction of lifetime of aircraft structure is essential for keeping high-reliability level and aviation safety. Research has shown that it is necessary to have significant statistics of the tested specimens to describe such a complicated process as metal fatigue. This paper aims to process statistical data for two-stage fatigue tests. Based on a review of the literature and experimental statistics, analytical models of the rate of degradation processes were highlighted. On this basis, it is recommended to study the evolutionary process of fatigue behaviour. Two-stage fatigue tests of technically pure copper were carried out in the statistical aspect. Above 200 specimens were tested to obtain an nl-n2 diagram. Oscillation of physical-mechanical characteristics the metal has occurred that it leads to the data significant scattering. Probability density functions f(n1, n2) for experiment results was obtained. Further research is needed for probability distribution fitting and more accurate selection of bivariate distribution.","PeriodicalId":372744,"journal":{"name":"2020 10th International Conference on Advanced Computer Information Technologies (ACIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130384065","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}
I. Oleksiv, H. Lema, V. Kharchuk, T. Lisovych, O. Dluhopolskyi, T. Dluhopolska
{"title":"Identification of Stakeholders Importance for the Company’s Social Responsibility using the Analytic Hierarchy Process","authors":"I. Oleksiv, H. Lema, V. Kharchuk, T. Lisovych, O. Dluhopolskyi, T. Dluhopolska","doi":"10.1109/ACIT49673.2020.9208897","DOIUrl":"https://doi.org/10.1109/ACIT49673.2020.9208897","url":null,"abstract":"The idea of the current article is to identify the influence of stakeholders on corporate social responsibility (CSR) of the specific company. In general, by following CSR principles the company is trying to pursue two goals, which are the following: to be socially responsible and to create a good image in society to get higher profit. The important point is to decide which stakeholders have a strong influence on corporate social responsibility in order to develop strong relations with them and to build an effective CSR program. Thus, as the result of the application of the current method the company would be able to understand, with which stakeholders to develop its relations in order to improve its image in the external environment. The task of evaluating stakeholder influence on company SR quantitatively is quite complicated. Thus, a special method that combines expert judgments with quantitative evaluation needs to be applied. For this purpose, method based on Analytic Hierarchy Process is suggested to be used in the article. As a result of the method application, we receive the overall estimation of stakeholder influence on company SR. The latter permits us to decide with which stakeholders to work more actively. To conduct the calculations Expert Choice 11 computational toolkit was used.","PeriodicalId":372744,"journal":{"name":"2020 10th International Conference on Advanced Computer Information Technologies (ACIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114113078","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":"Fast Reconstruction Algorithm for Contactless Inductive Flow Tomography","authors":"T. Wondrak, R. Jacobs, P. Faber","doi":"10.1109/ACIT49673.2020.9208853","DOIUrl":"https://doi.org/10.1109/ACIT49673.2020.9208853","url":null,"abstract":"The contactless inductive flow tomography is a measurement technique for the determination of the flow structure of an electrically conducting liquid. The procedure is based on the measurement of the magnetic field and can potentially be applied for visualisation and online-monitoring of industrial processes as, for example, continuous steel casting or the production of mono-crystalline silicon using the Czochralski crystal growth method. With the aid of the measured field values, the velocity field is reconstructed by solving a linear inverse problem that is described by a system of coupled integral equations. The frame rate of the field measurement is typically in the order of one frame per second, whereas the inversion of the integral equations usually takes about twenty times as long, since a regularisation parameter needs to be determined for each reconstruction. In order to reduce this discrepancy, a new algorithm is introduced in this article. The algorithm relies on the pre-computation of inverted matrices, so that the inversion can be determined solely by performing matrix-vector products. This technique reduces the time required for the inversion process at each reconstruction to same length of time a measurement cycle takes, i.e. about one second. The efficiency of the method will be demonstrated using a modified Rayleigh-Bénard experiment with liquid metal at room temperature.","PeriodicalId":372744,"journal":{"name":"2020 10th International Conference on Advanced Computer Information Technologies (ACIT)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116101412","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":"Analysis of the Development of Socio-Cultural Potential of Ukraine with the Application of the Apparatus of Fuzzy Logic","authors":"V. Pryimak, A. Hrytsaiko","doi":"10.1109/ACIT49673.2020.9208811","DOIUrl":"https://doi.org/10.1109/ACIT49673.2020.9208811","url":null,"abstract":"Based on the calculation of the indicator “Level of socio-cultural potential development the article analyses the trends of this potential development in Ukraine over the last nine years. The theory of fuzzy sets was used as a research method. Many primary indicators have been formed which determine the socio-cultural potential of the region or country as a whole and determine their significance. The operations of fuzzyfication of the variables were performed, the calculations were realized and the operation of the defuzzification of these variables was accomplished. Moreover, to find the value of the resultant integral indicator of the level of development of this potential, we use an approximate algorithm of calculations. The results of the calculations showed that the state of socio-cultural potential of Ukraine improved by 2013. A sharp deterioration of this situation occurred in 2014. Since 2015, the state of this potential has improved once again annually.","PeriodicalId":372744,"journal":{"name":"2020 10th International Conference on Advanced Computer Information Technologies (ACIT)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114999099","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":"SECTION 1: Mathematical Models of Objects and Processes","authors":"","doi":"10.1109/acit49673.2020.9208885","DOIUrl":"https://doi.org/10.1109/acit49673.2020.9208885","url":null,"abstract":"","PeriodicalId":372744,"journal":{"name":"2020 10th International Conference on Advanced Computer Information Technologies (ACIT)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123589470","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}
V. Sheketa, Iurii Shcherbiak, V. Pikh, Y. Romanyshyn, M. Chesanovskyy, Miroslav Kopnický
{"title":"Formal Outlines of Case-Based Modelling of Data and Knowledge Sources for Drilling Control","authors":"V. Sheketa, Iurii Shcherbiak, V. Pikh, Y. Romanyshyn, M. Chesanovskyy, Miroslav Kopnický","doi":"10.1109/ACIT49673.2020.9208941","DOIUrl":"https://doi.org/10.1109/ACIT49673.2020.9208941","url":null,"abstract":"The proposed interpretation for the case-based notion allows to concentrate the expert’s experience in the subject area of drilling of oil and gas wells that satisfies the criteria of the main data and knowledge sources which are strictly necessary for the functioning of the case-based reasoning in general and in particular. The developed formal outlines allow implementation of different knowledge schemas, such as those that are necessary for the case-based reasoning at the stage of feedback generation, or the knowledge actualization for the support of users, required during the reviewing and preservation stages. Accordingly, the basis of the upper level cases was described by a certain set of constraints in the form of relevant sets and systems that forms a predefined hierarchy of constraints. They are the most rigorous sketch for possible representation and formation of conglomerate of constraints as a consequence of the assumption for disproportionate constraints allocation on all levels. The essence of case-based decision support procedures is disclosed.","PeriodicalId":372744,"journal":{"name":"2020 10th International Conference on Advanced Computer Information Technologies (ACIT)","volume":"246 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124713429","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}
Svitlana Mazepa, L. Dostálek, V. Křivan, S. Banakh
{"title":"Cybercrime in Ukraine and the Cyber Security Game","authors":"Svitlana Mazepa, L. Dostálek, V. Křivan, S. Banakh","doi":"10.1109/ACIT49673.2020.9208942","DOIUrl":"https://doi.org/10.1109/ACIT49673.2020.9208942","url":null,"abstract":"This paper reviews some massive cyber-attacks in Ukraine. It demonstrates the scale and dynamics of cybercrime in Ukraine. Motivated by cybercrime we develop a two-player two-strategy matrix game between a defender that can either protect its strategic asset or leave it unprotected, and a defender that can either attack the defender’s asset, or not. We assume that defending and attacking strategies are costly, and the value of the strategic asset is higher than are the costs of defending /attacking it. We show that under generic conditions on parameters the game has a single mixed Nash equilibrium. At this equilibrium the probability that the attacker will attack decreases with the value of the asset while the probability that the defender will actively defend increases.","PeriodicalId":372744,"journal":{"name":"2020 10th International Conference on Advanced Computer Information Technologies (ACIT)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121694729","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":"Forecasting of Wind Turbine Output Power Using Machine learning","authors":"H. Rashid, Waqar Haider, C. Batunlu","doi":"10.1109/ACIT49673.2020.9208852","DOIUrl":"https://doi.org/10.1109/ACIT49673.2020.9208852","url":null,"abstract":"Most of the countries around the world are facing huge environmental impact, and the most promising solution to mitigate these is the use of renewable energy, especially wind power. Though, the use of offshore wind energy is rapidly increasing to meet the elevating electricity demand. The researchers and policymakers have become aware of the importance of providing near accurate prediction of output power. Wind energy is tied to variabilities of weather patterns, especially wind speed, which are irregular in climates with erratic weather conditions. In this paper, we predicted the output power of the wind turbines using the random forest regressor algorithm. The SCADA data is collected for two years from a wind farm located in France. The model is trained using the data from 2017. The wind direction, wind speed and outdoor temperature are used as input parameters to predict output power. We test our model for two different capacity factors. The estimated mean absolute errors for the proposed model in this study were 3.6% and 7.3% for and 0.2 capacity factors, respectively. The proposed model in this study offers an efficient method to predict the output power of wind turbine with preferably low error.","PeriodicalId":372744,"journal":{"name":"2020 10th International Conference on Advanced Computer Information Technologies (ACIT)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121999531","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}
Ihor Javorskyj, R. Yuzefovych, O. Dzeryn, M. Varyvoda
{"title":"Analysis of Deterministic Components of Biperiodically Correlated Random Signals","authors":"Ihor Javorskyj, R. Yuzefovych, O. Dzeryn, M. Varyvoda","doi":"10.1109/ACIT49673.2020.9208948","DOIUrl":"https://doi.org/10.1109/ACIT49673.2020.9208948","url":null,"abstract":"The estimators of deterministic part parameters for biperiodically nonstationary vibration signal, obtained by the least squares method (LSM), are analyzed. The formulae for LSM-estimator variances and bias, which describe their dependencies on realization length and signal covariance components, are obtained. It is shown that LSM allows to avoid leakage effects and to obtain unbiased estimators of biperiodic nonstationary vibration signal deterministic part for arbitrary realization length and harmonic frequencies.","PeriodicalId":372744,"journal":{"name":"2020 10th International Conference on Advanced Computer Information Technologies (ACIT)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125358319","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":"Mathematical Model for Prediction the Dynamics of Organic Traffic at E-commerce Web-site in the Process of its Search Engine optimization","authors":"I. Madiudia, Natalia Porplytsya, Maryna Nagara","doi":"10.1109/ACIT49673.2020.9208886","DOIUrl":"https://doi.org/10.1109/ACIT49673.2020.9208886","url":null,"abstract":"The problem of prediction dynamics of organic traffic at e-commerce web-site located on Prom.ua marketplace is considered. To do this, in the paper the mathematical model in the form of a difference equation is proposed. This model provides the ability to predict web-site’s organic traffic in the process of its search engine optimization (SEO). In the future, this will allow to predict and to plan the budgets needed for site development and to estimate the traffic growth.","PeriodicalId":372744,"journal":{"name":"2020 10th International Conference on Advanced Computer Information Technologies (ACIT)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129389250","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}