Browsing by Author "Wojcik, Waldemar"
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Item A method of construction of automated basic ontology(National Technical University «KhPI», 2017) Lytvyn, Vasyl; Vysotska, Victoria; Wojcik, Waldemar; Dosyn, Dmytro; Lviv Polytechnic National University; Institute of Electronics and Information Technology, Lublin University of Technology; Systems Analysis Laboratory, Karpenko Physico-Mechanical Institute of the NAS of UkraineThe paper describes an approach to development of a computer system that automatically constructs an ontology base. Basic modules of the system and its operation are described, as well as the choice of software tools for implementation. Application of the proposed system allows to fill the domain ontology in an automatic mode. Therefore, this paper introduces an approach to development of an automated basic ontology composition. An architecture of synthesis of the ontology system is created using CROCUS (Cognition Relations or Concepts Using Semantics) software model. The main system modules and their functions are described. A decision of SDK for system realization is justified. Application of the proposed system can fill an ontology of subject area automatically.Item Application of finite elements method for optimisation of optical fibre probe designed to operate in harsh conditions(Видавництво Державного університету “Львівська політехніка”, 2000) Wojcik, Waldemar; Smolarz, Andrzej; Kotyra, AndrzejIn the work we describe the process of design of fibre-optic probe for the flame monitoring system by method of finite elements. Probe made according to the design has successfully passed tests made in industrial boiler OP650. Описано процес розробки волоконно-оптичного зонду для систем моніторингу полум’я методом скінченних елементів. Виготовлений зонд успішно пройшов випробовування в промисловому бойлері ОР650.Item The stability of the two-channel distributed-parameters with the loss control system(Видавництво Державного університету “Львівська політехніка”, 2000) Dacka, Czeslaw; Gotra, Zenon; Wojcik, WaldemarIn this paper, we demonstrate the analysis of the stability of the two-channel control systems containing the optical fibre links as a through-coupling. The analysis of the stability of systems the indicial equation of which can be reduced to the form where its roots are located in the defined sector of the left half plane of the complex variables was conducted on the basis of the method of the plane of parameters. Приведено аналіз стабільності двоканальних керуючих систем, які містять волоконно-оптичні ланки в якості наскрізних зв’язків. На основі методу матриці параметрів проведено аналіз стабільності систем визначальне рівняння яких може бути зменшена до форми в якій його корені розміщені в певному місці лівої половини площини комплексних змінних.