Econtechmod

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A GIS-based Fuzzy Multi-Criteria Analysis Approach to Industrial Site Selection
(University of Engineering and Economics in Rzeszow, 2019-03-20) Buchynska, I.; Odessa State Environmental University
The paper proposes a methodology for fuzzy multi-criteria analysis of decisions in a raster-based geographical information system (GIS) to determine the optimal locations for territorial objects. Recommendations about the stages of choosing alternatives for spatial and non-spatial constraints are given. It is shown that the fuzzyfication of criteria, that is, the conversion of their attribute values into a fuzzy set, based on expert evaluation of a fuzzy membership function, allows screening alternatives by determining thresholds of alpha-cut of fuzzy sets for each criterion, followed by combining criteria attributes using aggregation operators: minimum, maximum, weighted sum, OWA operator Jager. Adding to the procedure of multicriteria analysis of the additional stage of filtration of alternatives gives the opportunity to reduce the number of alternatives, and in the future and the processing time of the criteria layers by aggregator operators. The proposed algorithm for screening alternatives can be performed in a GIS environment using Fuzzy Membership, Overlay and raster calculators tools.
Accessibility analysis of scientific libraries web resources
(2019-06-26) Pasichnyk, V.; Shestakevych, T.; Kunanets, N.; Rzheuskyi, A.; Andrunyk, V.; Lviv Polytechnic National University
A complex system of social and educational inclusion needs competent analysis to make it possible proper management and comprehensive improvement. To analyze one of the actual facets of such a system, namely, its ICT support, it is necessary to take into account the various needs of socially vulnerable people. A set of guidance to web accessibility is a convenient instrument, that provides various approaches in designing goods and technologies. Among other, such guidance helps to design websites with no access barriers, which is extremely important for people with special needs. To analyze the websites and different online resources, which might be of interest to a person with special needs during the social and educational inclusion, a list of characteristics was developed. It must be taken into account the classification and the structure of information materials, website`s structure, design, etc. The unification of the ICT for people, involved in educational and social inclusion, will improve informational and technological support of such process.
An application of the fuzzy set theory and fuzzy logic to the problem of predicting the value of goods rests
(Commission of Motorization and Energetics in Agriculture, 2014) Rybytska, O.; Vovk, M.
Applying the fuzzy set theory and fuzzy logic, we construct a mathematical model for predicting the value of unrealized goods rests and demonstrate this model on an empirical example showing good correlation with the real data.
Analysis of business processes in electronic content-commerce systems
(Commission of Motorization and Energetics in Agriculture, 2016) Vysotska, V.; Chyrun, L.; Kozlov, P.
Practical factor of information resources processing in electronic content commerce systems (ECCS) is related to solving problems with increase in content amount on Internet, active development of e-business, rapidly spreading Internet accessibility, information products and services extension set, increasing demand for content. The aim was to developmethods and software of information resources processing to improve the efficiency of ECCS due to increased sales of content. Article is devoted to the standardized methods and software development of information resources processing in ECCS. In this paper an actual scientific problem of development and research in methods and means of information resources processing ECCS was solved with use of designed classification, mathematical providing and software and generalized ECCS architecture. ECCS classification was researched and improved on the basis of analyzing and evaluating of such systems. It made possible to determine, detail and justify choice of their functional possibilities for content lifecycle designing. The task of developing methods and software formation, management and support of information products resolved with a theoretically grounded concept by automating information resources processing in ECCS to increase content selling for constant user, by involvement of potential users and expanding the boundaries of the target audience.
Analysis of computer vision and image analysis technics
(Commission of Motorization and Energetics in Agriculture, 2017) Rybchak, Z.; Basystiuk, O.; Lviv Polytechnic National University
Computer vision and image recognition are one of the most popular theme nowadays. Moreover, this technology developing really fast, so filed of usage increased. The main aims of this article are explain basic principles of this field and overview some interesting technologies that nowadays are widely used in computer vision and image recognition.
Analysis of methods and means of text mining
(Commission of Motorization and Energetics in Agriculture, 2017) Rybchak, Z.; Basystiuk, O.; Lviv Polytechnic National University
In Big Data era when data volume doubled every year analyzing of all this data become really complicated task, so in this case text mining systems, techniques and tools become main instrument of analyzing tones and tones of information, selecting that information that suit the best for your needs and just help save your time for more interesting thing. The main aims of this article are explain basic principles of this field and overview some interesting technologies that nowadays are widely used in text mining.
Analysis of the costs and cost-efficiency of regeneration of modern fuel injection systems in CI engines
(Commission of Motorization and Energetics in Agriculture, 2016) Osipowicz, T.
This paper presents the analysis of costs and cost-efficiency of the repair of modern fuel injection systems in compression-ignition engines. The requirements for modern Diesel engines are low emission of toxic substances into the atmosphere and low fuel consumption. In order to meet the rigorous standards, the Common Rail fuel injection system has been implemented. By increasing fuel injection pressure to 200 MPa and introducing multi-stage dosing, engine designers have improved the process of air-fuel mixture combustion and engine ecological and economic parameters. The price for these changes is an accelerated wear of fuel injection equipment in modern CI engines. Regular fuel filter replacement and periodical cleaning of the systems would minimise the risk of damage. Unfortunately, most users do not comply with vehicle servicing times, and come to car repair shops only when a failure occurs, but then it is too late and the repair costs are high.
Analytical model of foil consumption for cylindrical bale wrapping
(Commission of Motorization and Energetics in Agriculture, 2016) Stępniewski, A.; Nowak, Ja.; Stankiewicz, A.
The work presents an algorithm for the calculation of the consumption of stretch foil used to wrap cylindrical bales of fodder in order to isolate the fodder from the air and other external factors. Mechanical properties of the foil, its arbitrary dimensions and any overlapping width of subsequent wrapped foil layers ware taken into account. A simulation program was written that allows to compute the number of foil layers in the bale lateral surface as a function of the width of the foil, the angle of the bale's rotation around its axis and the number of wrappings. The computer program contains graphical module which allows visualization of geometry of the distribution of subsequent foil strips and the arrangement of foil layer in a bale cross-section. The length and surface area of the foil taken from the roll are computed for different variants of the wrapping process. The computational example is presented for two geometrically different ways of wrapping and different initial widths of the foil. Conclusions and suggestions were formulated as a result of the simulation.
Analytical review of medical mobile diagnostic systems
(Commission of Motorization and Energetics in Agriculture, 2016) Kordiyak, D.; Shakhovska, N.
This article analyzes the mobile medical diagnostic systems and compare them with the proposed HealthTracker system based on smart watch Apple Watch. Before the development of the system HealthTracker, there was conducted a review and analysis of existing similar systems to identify common and distinctive features of the future system. This analysis will improve HealthTracker system, based on the strengths and weaknesses of existing systems and help identify and justify the key benefits and unique system HealthTracker. The main goal is to provide a system HealthTracker convenient way to interact with the patient the doctor based on the vital signs of the patient. Apple Watch is an excellent watch presented in 2014 that has the capacity to collect and compile data on the health of the user and can be used for medical purposes. The main hardware components of the watch for collecting and analyzing health data is a technology Taptic Engine, infrared sensors and pulse. The main software components of the watch, that will be used in the design of the system is the 3 applications, each of which measures a user's vital signs. Integration with smartphone user makes data on the health of a quick and reliable. On the market today there are analogues of the system, but most of the systems are relatively new and require many improvements, some are under development prototypes. In addition, all the above systems require binding to certain equipment that is not always convenient in everyday use. To eliminate all the inconvenience in using existing systems need to create a system that is integrated into smart watches that provide ease of use, and the mechanism storing and analyzing medical data to cloud storage. An important aspect of the study is to analyze the general situation in the market of mobile medical diagnostic systems. Thanks to research the key advantages and disadvantages of the proposed mobile medical analysis system and shows its versatility compared with existing systems on the market.
Angle of injection impact on the combustion process in a compression-ignition engine
(Lublin, 2018-06-26) Łagowski, P.; Kurczyński, D.; Wcisło, G.; Pracuch, B.; Tomyuk, V.; Kielce University of Technology; Malopolskie Centre for Renewable Energy Sources "BioEnergia”; Lviv National Agrarian University
The article presents the impact of hydrocarbon fuel angle of injection on heat emission characteristics in a compression – ignition AD3.152 engine. The angle of injection has a significant impact on the primary engine operating parameters and combustion process indicators, which include the proportion of combustion which occurs according to kinetic and diffusion models, heat emission rate and the combustion process duration. The characteristics describing emission of a relative heat quantity were determined on the basis of an analysis of actual, indicator diagrams averaged over 100 runs, under the assumption that the combustion process ends by the time the exhaust valve opens. During the test, the engine operated according to an external speed characteristic. Tests were carried out for three fuel angles of injection: 13, 17 and 21 crankshaft rotation degrees.
Applications of the combinatorial configurations for optimization of technological systems
(Commission of Motorization and Energetics in Agriculture, 2016) Riznyk, V.
This paper involves techniques for improving the quality indices of engineering devices or systems with nonuniform structure (e.g. arrays of sonar antenna arrays) with respect to performance reliability, transmission speed, resolving ability, and error protection, using novel designs based on combinatorial configurations such as classic cyclic difference sets and novel vector combinatorial configurations. These design techniques makes it possible to configure systems with fewer elements than at present, while maintaining or improving on the other operating characteristics of the system. Several factors are responsible for distinguish of the objects depending an implicit function of symmetry and non-symmetry interaction subject to the real space dimensionality. Considering the significance of circular symmetric field, while an asymmetric subfields of the field, further a better understanding of the role of geometric structure in the behaviour of system objects is developed. This study, therefore, aims to use the appropriate algebraic results and techniques for improving such quality indices as combinatorial varieties, precision, and resolving ability, using remarkable properties of circular symmetry and non-symmetry mutual penetration as an interconnection cyclic relationships, and interconvertible dimensionality models of optimal distributed systems. Paper contains some examples for the optimization relating to the optimal placement of structural elements in spatially or temporally distributed technological systems, to which these techniques can be applied, including applications to coded design of signals for communications and radar, positioning of elements in an antenna array, and development vector data coding design.
Assessment of personnel risks at adoption of administrative decisions
(Lviv Polytechnic National University, 2014) Tsvetkova, I.
In article the technique of an assessment of personnel risks is developed at a choice of optimum version of the administrative decision. The analysis of alternatives in the course of decision-making assumes serial consideration of all candidates solution with determination of advantages and shortcomings of each option by all possible criteria, including on a factor of personnel risks. Following the results of an assessment the card of risks is formed, and the assessment of an acceptability of lternative is defined as average weighed by each stage of realization of alternative where as weight information evaluation test is accepted.
Automation of determining the range of values for MEMS resistive parameters
(Commission of Motorization and Energetics in Agriculture, 2016) Teslyuk, Vasyl; Beregovska, Khrystyna; Pukach, Andrii; Ivantsiv, Roman-Andriy
This paper is devoted to the development of automating methods of the ranges determination process of the resistance values measurements for the investigated MEMS resistive parameters (strain gauges, piezoresistors, thermistors, magnetoresistors and photoresistors, etc.), electric resistance of which is changing during functioning of MEMS, in order to improve the accuracy of investigated resistive parameter value determining and optimization of the entire measuring process in general. The developed method for automation of values range determination of the MEMS resistive parameters measurand is based on the designed models and algorithm of automation for the process of an exemplary resistor value determination. A measurand of the investigated MEMS resistive parameter is located in a neighborhood of this exemplary resistor value. The abovementioned method is also based on the developed model and algorithm for automation of the values range determination of the MEMS resistive parameters measurand.
Basic concepts of dynamic recurrent neural networks development
(Commission of Motorization and Energetics in Agriculture, 2016) Boyko, N.; Pobereyko, P.
In this work formulated relevance, set out an analytical review of existing approaches to the research recurrent neural networks (RNN) and defined precondition appearance a new direction in the field neuroinformatics – reservoir computing. Shows generalized classification neural network (NN) and briefly described main types dynamics and modes RNN. Described topology, structure and features of the model NN with different nonlinear functions and with possible areas of progress. Characterized and systematized well-known learning methods RNN and conducted their classification by categories. Determined the place RNN with unsteady dynamics of other classes RNN. Deals with the main parameters and terminology, which used to describe models RNN. Briefly described practical implementation recurrent neural networks in different areas natural sciences and humanities, and outlines and systematized main deficiencies and the advantages of using different RNN. The systematization of known recurrent neural networks and methods of their study is performed and on this basis the generalized classification of neural networks was proposed.
Basic concepts of evolution in agents calculating and agents system
(Commission of Motorization and Energetics in Agriculture, 2016) Boyko, N.; Kutyuk, O.
The basics concepts of evolution in agents calculating are discovered in this work and are showed their directions and applications. Before explaining what is agent and its description, there were given a bit of its history and the difference between agents and programs. Were given basic types of agents on examples and figures. The main task of agents is to require a large number of interactions for which most mathematical modeling methods are unsuitable. Were analyzed agent systems architecture and a description of their main parts. Principles of work with mobile and intelligent agents are considered. Furthermore, were exemplify the reasons and situations of use either intelligent agents or mobile agents. Also, their examples were showed on different examples and figures. Technology and application tools which uses in the process are represented. Analysis of JADE-technology are carried out. On the market today there are analogues of JADE, but most of the systems are relatively new and require many improvements, some are under development prototypes. Also, were given description of main tools and features of JADE. It will help a lot in elaboration of agents. Advantages and disadvantages of using agent approach are showed for creating system of data processing and they show their versatility compared with other systems.
Building an ontology for system analysis
(2018-06-18) Burov, Ye.; Pasichnyk, V.; Katrenko, A.; Lviv Polytechnic National University
System analysis as scientific and engineering discipline underpins research and development in other areas. However, system analysis models and methods are often taught separately and, as a result, system analyst cannot form a holistic understanding of this area. In order to deepen our understanding of system analysis’ concepts and relations the ontology of this area was built. It was constructed based on models and methods of system analysis considered as knowledge patterns. The concept of system was selected as a central concept of ontology. Other important concepts, such as goal, function, decision and process are relating to it. Finally, the applications of created system analysis ontology for teaching system analysis in high school and as a part of semantic grid are discussed.
Building computer vision systems using machine learning algorithms
(Commission of Motorization and Energetics in Agriculture, 2017) Boyko, N.; Sokil, N.; Lviv Polytechnic National University
In this paper theoretic aspects of machine learning system in the field of computer vision is considered. There are presented methods of behavior analysis. There are offered tasks and problems associated with building systems using machine learning algorithm. The paper provides signs of problems that can be solved by using machine learning algorithms There is demonstrated step by step construction of computer vision system. The paper provides the algorithm of solving the problem of binary (two classes) classification for demonstration the machine learning algorithm possibilities in image recognition field, which can recognize the gender of the person on the photo. Aspects related to the search of data processing are also considered. There is analyzed the search of optimal parameters for algorithms. An interpretation of results in machine learning algorithm is provided. Binarization methods in machine learning algorithm are offered. There is analyzed the technology for improving the accuracy of machine learning algorithm. There are proposed ways to improve computer vision system in neural systems. Also there are analyzed large software modules that work using machine learning systems. The article provides prospects of powerful information technologies, which are necessary for the proper data selection in learning and configuration of feature extraction algorithm to create a computer vision system.
Business process modelling using ontological task models
(Commission of Motorization and Energetics in Agriculture, 2014) Burov, Y.
Knowledge-based technologies form a basis for creation of flexible intelligent enterprise. Methods of business process modelling using ontological tasks models allow to create an active modelling system to capture and reuse knowledge patterns in form of ontological models while preserving overall consistency via common ontology usage. High-level business process ontology is presented. Models for business and decision making operations along with their representation in system are specified. Business process modelling tool using task models is described.
Business vertical integration in Ukraine: motivation, advantages and disadvantages
(Національний університет "Львівська політехніка", 2013) Chukhray, N.
The paper deals with the problems of increasing the competitiveness of Ukrainian enterprises and integration process in Ukraine. Correlation between a level of business vertical integration and development of a country is wellproven. Basic problems of the integration strategy of Ukrainian enterprises are identified. The author gives us the examples of successful development of the largest private vertically integrated energy company in Ukraine. One of the main directions of developing of the Ukrainian economy is to cooperate with the strategic partners as an important priority in the formation of vertical integrated structures of national importance.
Cloud managers – an innovative approach to the management of the library information resources
(Commission of Motorization and Energetics in Agriculture, 2017) Rzheuskiy, A.; Kunanets, N.; Kut, V.; Lviv Polytechnic National University; Augustine Voloshin Carpathian University
The innovation of application of cloud managers is described in the article. The authors emphasize that the innovative direction of development of information activities is the integration of Web platforms (social networks and cloud storages) for creating a unified communication space and storage for large amount of information. Tool that provides this development are cloud managers. For library institutions using such technologies will create the favorable and flexible serviceoriented system for providing users with information resources. For determination of free cloud managers and selected among them a benchmark, the methods of benchmarking and expert evaluation were used in the research. The algorithm for operation with every service is given. The following technological capabilities: “integration with cloud storage”, “cloud disk space manager”, “multimedia playback,” “presence of workspace” for collaboration were taken into account. The result of the study is to determine the cloud manager that can serve as a benchmark for providing free cloud services with a wide range of technological capabilities.