Вісники та науково-технічні збірники, журнали
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Item Information technology of optimized agro-biological state management of agricultural lands(2019-06-26) Snytyuk, V.; Brovarets, O.; Taras Shevchenko Kyiv National University; Kyiv Cooperative Institute of Business and LawAvailable techniques for dealing with uncertainties in the agro-industrial complex and their use for describing and assessing the adequacy of the decisions taken are incomplete, and often ineffective, as they usually do not take into account the combination of “field-machinetechnological material”, which prevents acceptance effective solutions for managing agro-biological potential of agricultural land and, as a consequence, obtaining the maximum economic efficiency of agricultural production. Reliable estimation of variables of agricultural production parameters using the “field-machine-technological material” model makes it possible to provide optimal control of available technical equipment (machinery, sowing machines, etc.), agro-biological (humus content, presence of nutrients, micro-and macro elements, etc. in soil or plant ) and technological resources for making adequate decisions and managing agro-biological potential of agricultural lands, which will provide the necessary economic efficiency. The task is achieved by ensuring the proper quality of the implementation of technological operations that are an integral indicator of economic efficiency and allow providing the necessary economic efficiency through optimal and efficient management of technical means for optimal action on the agrobiological potential of the field and the use of available technological resources. Such control is possible with the use of information and technical systems of local operational monitoring, which are located on machine-tractor units and provide effective control of technological operations by acting on the executive bodies of agricultural machines on the basis of data characterizing the agro-biological state of the soil environment. Information and technical systems of local operational monitoring of the agro-biological state of agricultural lands are used in the following cases: – before performing a technological operation, – simultaneously with the implementation of the technological operation (sowing, fertilizer application, etc.), – during the growing season and after harvesting. This opens new prospects for organic farming using such “smart” agricultural machines.Item Оцінка адекватності функціонування програмного маршрутизатора у процесі обслуговування мультимедійного трафіку(Видавництво Львівської політехніки, 2015) Бешлей, М. І.; Селюченко, М. О.; Лаврів, О. А.; Масюк, А. Р.Проведено дослідження імовірнісно-статистичних властивостей трафіку експериментальної мультисервісної телекомунікаційної мережі для підтвердження адекватності моделі програмного маршрутизатора та згенерованого трафіку. Ефективність запропонованого підходу особливо чітко виявляється в умовах значних навантажень на комунікаційне ядро мережі, оскільки навіть незначне зниження затримок потоків реального часу суттєво підвищує якість обслуговування, а в деяких випадках є визначальним фактором для забезпечення оперативності реагування мережевої системи на кризові ситуації. In this paper we perform a study of probabilistic and statistical properties of experimental traffic of multiservice telecommunication network to confirm the adequacy of the developed software router model and simulated traffic profiles. The effectiveness of the proposed approach may be investigated the best under the conditions of significant load on the communication network core, because even a slight reduction in streaming delay substantially increases the service quality, and in some cases it is a major determining factor that ensures the efficiency of the system response on critical situations. The investigations are performed using developed virtual software router. The development was carried under the Qt5.2 programming environment. It uses the programming language C ++ (C ++ standard 11, 2011). The main advantage of this environment is that the code that has been written on it can be compiled on different platforms (e.g. Windows, Linux, Mac OS). Quality control of the traffic generator is performed to determine the maximum rate of IP packets generation with regular inter-packet spacing. The lower the standard deviation of inter-packet spacing, the less error and the more adequate simulation results are observed. We perform a series of tests to determine the quality of generator. Each stage of the experiment isdetermined by different inter-packet spacing and packet size. In the first test the packets flow rate is selected to ensure normal router functioning mode. In each subsequent test the flow rate is increased until the rate value when the length of the emerging queue begins significantly affects the delay of IP packets. Selected The size of software routers incoming buffer is 24 packets. We performed an experiment on comparison of processing delays by hardware router (Cisco 2800 series) and the developed software router to confirm the adequacy of the latter. We have obtained in real time sets of data that are represented as graphs which depict the range of the round trip time for all packets and density of distribution probability. We have used Wireshark network analyzer to fix the fragmentation and grouping of packets in transmitted information flow. Experimental studies have confirmed the adequacy of the results obtained during the simulation of software router. The experiment was performed using 2 and 3 routers for a more accurate assessment of the delay of the real router.Item Інтелектуальна система підтримки прийняття рішень при діагностиці фізіологічного стану тварин(Видавництво Львівської політехніки, 2010) Версаль, Ю. В.Запропоновано підхід до побудови інтелектуальної системи підтримки прийняття рішень при діагностиці фізіологічного стану тварин, зокрема маститу і стану статевої охоти, на основі апарату нечіткої логіки. Розглянуто організацію знань, алгоритм роботи та структуру системи. Доведено адекватність діагностики. The approach for intellectual decision support system attached to the diagnostic of animal physiological state, especially mastitis and estrus, at the base of fuzzy logic apparatus is proposed. The organization of knowledges, the algorithm of working and the structure of the system are considerated. The adequacy of the diagnostics is proved.