Development of thermal LED Model

One of the main tasks of modern lighting technology is to increase the reliability of LED technology. In order to solve this problem, it is necessary to ensure an effective cooling of LEDs, since the values of their parameters depend substantially on the temperature of a crystal. This dependence makes a significant effect on the reliability of a lamp or a luminaire. Thus, in order to increase the reliability of LED technology, it is necessary to calculate the thermal operating conditions of LEDs at the design stage, taking into account a cooling system in use. There are many programs designed to simulate thermal processes, however, such programs use primitive, substantially simplified LED models, and do not allow to recreate electrical and thermal regimes close to real ones. In order to conduct a more accurate simulation, it is required to create new electric and thermal models of LEDs, which are based on real values of the electric-physical and geometric parameters of the instruments. The article considers the thermal model of LED produced by the company SemiLEDs developed in the Multisim program. They performed the calculation of the processes taking place in the light-emitting diodes during their work in a luminaire. The obtained results indicate the possibility of the used approach application for the analysis of various LED light sources. The created models will allow to reveal unfavorable thermal operating modes for LEDs and, accordingly, to take measures to increase the reliability of fixtures.Keywords: temperature dependence of characteristics, high-power LED, current-voltage characteristic, flux-current characteristic

Применение интеллектуальной системы криминального анализа в реальном времени (ricas) для аналитического сопровождения оперативно-розыскной деятельности и досудебного расследования

Uzlov, D.Y., Strukov, V.M., Grigorovich, A.B., Petrusenko, A.I. and Doskalenko, S.N. (2015), “Use of Real-time Intellectual criminal analytics system (RICAS) for analytical support of operative and search activities and pre-trial investigation” [“Primenenie intellektual’noj sistemy kriminal’nogo analiza v real’nom vremeni (RICAS) dlja analiticheskogo soprovozhdenija operativno-rozysknoj dejatel’nosti i dosudebnogo rassledovanija”], Pravo i Bezpeka, No. 2, pp. 132–139.Применение интеллектуальной системы криминального анализа в реальном времени (RICAS) для аналитического сопровождения оперативно-розыскной деятельности и досудебного расследования / Д. Ю. Узлов, В. М. Струков, А. Б. Григорович и др. // Право і безпека. - 2015. - № 2 (57). - С. 132–139.Досліджено проблему підвищення ефективності інформаційно-аналітичної роботи в органах внутрішніх справ шляхом створення інтелектуального технологічного інструментарію нового покоління. Проаналізовано сучасний стан інформаційно-аналітичного забезпечення органів внутрішніх справ України та сформульовано його характерні особливості. Виконано огляд зарубіжних автоматизованих засобів інформаційно-аналітичної роботи, виділено їхні переваги і недоліки. Як вирішення сформульованих проблем запропоновано використовувати геоінформаційну інтелектуальну систему кримінального аналізу в реальному часі – Real-time Intelligence crime analytics system (RICAS). Описано її призначення, функціональні можливості, методики виконання кримінального аналізу засобами системи, переваги в порівнянні з існуючими аналогами і новизну.The problem of improving the effectiveness of informational and analytical work within internal affairs agencies through the creation of intelligent technological tools of the new generation is studied in the article. The authors have analyzed the current state of informational and analytical support of Internal Affairs Agencies of Ukraine and have formulated its characteristic features. The overview of foreign automated means of information and analytical work is performed; their advantages and disadvantages are outlined. As a solution of the formulated problems the authors have offered to use geographic and information Real-time Intelligence crime analytics system (RICAS). Its purpose, functionality, methodical techniques of criminal analysis by the means of the system, advantages compared with existing analogues and novelty are described. The system has used methods and algorithms for clustering and classification of Text Mining technology to isolate criminally relevant information together with the technology of Visual Mining in real time, ensuring the ability to perform analytical work on the prevention and investigation of crimes in the automated mode on a qualitatively new level. The RICAS allows us to perform the analysis, processing and presentation of data on a new technological basis; it is designed as an add (shell) of the existing integrated information and search system of Internal Affairs Agencies of Ukraine; and that is essential, it allows while its implementation do not delete the old system or suspend its operation, but simply and painless significantly improve its functionality and efficiency. The RICAS – is the first intelligence system of criminal analysis of data, which brings together in one space the main and the most advanced methods and techniques of criminal analysis and analytical search in real time that can significantly increase the efficiency and effectiveness of solving crimes without delay and previously unsolved crimes.Исследована проблема повышения эффективности информационно-аналитической работы в органах внутренних дел путём создания интеллектуального технологического инструментария нового поколения. Проанализировано современное состояние информационноаналитического обеспечения органов внутренних дел Украины и сформулированы его характерные особенности. Выполнен обзор зарубежных автоматизированных средств информационно-аналитической работы, выделены их достоинства и недостатки. В качестве решения сформулированных проблем предложено использовать геоинформационную интеллектуальную систему криминального анализа в реальном времени – Real-time Intelligence crime analytics system (RICAS). Описаны её назначение, функциональные возможности, методики выполнения криминального анализа средствами системы, преимущества по сравнению с существующими аналогами и новизна