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Item Изследване на дактилоскопни следи на пръстови отпечатъци с използване на магнитни прахове(Бургаски свободен университет, 2014) Петков, Красимир; Лецковска, СилвияIn this work the possibilities of developing of fingerprint are shown. The method includes investigation traces on glass with the help of black and white magnetic powders, as well as taking them off by gelatin foil.Item Изследване на дактилоскопни следи на пръстови отпечатъци с използване на цианакрилатни пари(Бургаски свободен университет, 2014) Лецковска, Силвия; Петков, КрасимирIn this work the results of the study for developing fingerprints are shown. In the study the method of fumigation with Cyanacrylate fumes is used. Traces of fingerprints on different types of surfaces - glass, wood and metal are examined.Item Система за мониторинг и оценка на енергийния потенциал от слънчева енергия(Бургаски свободен университет, 2014) Лецковска, Силвия; Сейменлийски, КаменIn this work the monitoring system for evaluation solar energy potential is shown. The system should give the possibilities for energy production for Burgas free university.Item ЗА РЕШАВАНЕ НА НЯКОИ ПРОБЛЕМИ ПРИ ВЕКТОРНО УПРАВЛЕНИЕ НА ТРИФАЗЕН АСИНХРОНЕН ДВИГАТЕЛ(Бургаски свободен университет, 2015) Георгиев, Гинко; Димитрова, Кремена; Лецковска, Силвия; Сейменлийски, КаменThe report presented the results of proposed structural scheme subject to regulation embodying the vector principle. It has been and analytical expressions, which is based on the conclusion of the transfer function of the system used for the model. There are also two control loop using PI regulator correction, as well as structure of the control loop with the reference model.Item ОСНОВНИ ПОЛОЖЕНИЯ ОТ ТЕОРИЯТА НА УПРАВЛЕНИЕТО НА АСИНХРОНЕН ДВИГАТЕЛ С ОРИЕНТАЦИЯ НА МАГНИТНОТО ПОЛЕ(Бургаски свободен университет, 2015) Лецковска, Силвия; Сиракова, Даря; Сейменлийски, КаменThe report clarifies starting theoretical points for projection of energy efficient system power part for regulation via magnetic field orientation. Graphic images of the oriented regulation system’s main dimensionsare attached. The application field of the results is indicated.Item ПРОИЗВОДСТВО НА ЕНЕРГИЯ С ИЗПОЛЗВАНЕ НА СЛЪНЧЕВО – ВОДОРОДНИ ЕНЕРГИЙНИ СИСТЕМИ(Бургаски свободен университет, 2015) Лецковска, Силвия; Сейменлийски, КаменIn this paper the possibilites to obtain the electricity from the sоlar - hydrogen system are discuced. Presented opportunities for the production of electricity using photovoltaic systems and fuel cells.Item ИЗСЛЕДВАНЕ ПОТЕНЦИАЛА НА ВЪЗОБНОВЯЕМ ЕНЕРГИЕН ИЗТОЧНИК ЗА ПРОИЗВОДСТВО НА ТОПЛА ВОДА(Бургаски свободен университет, 2015) Лецковска, Силвия; Сейменлийски, КаменIn this article the results of studies related to improving the energy efficiency of a building are shown. The study of the production of hot water for household needs using renewable energy source is done. Data showing correlation of the monthly heating load for a home with a certain number of inhabitants are discussed. The replacement ratio is part of the thermal capacity of the building, obtained from a renewable energy source is calculated.Item ПРОИЗВОДСТВО НА ЕНЕРГИЯ С ИЗПОЛЗВАНЕ НА СЛЪНЧЕВО – ВОДОРОДНИ ЕНЕРГИЙНИ СИСТЕМИ(Бургаски свободен университет, 2015) Лецковска, Силвия; Сейменлийски, КаменIn this paper the possibilites to obtain the electricity from the sоlar - hydrogen system are discuced. Presented opportunities for the production of electricity using photovoltaic systems and fuel cells.Item РАЗРАБОТВАНЕ НА ДИСКРЕТЕН МОДЕЛ НА АСИНХРОНЕН ДВИГАТЕЛ В СИНХРОНИЗИРАНА С ПОЛЕТО КООРДИНАТНА СИСТЕМА(Бургаски свободен университет, 2016) Сиракова, Даря; Сейменлийски, Камен; Лецковска, СилвияThe paper offered the results of the theory in invention of discrete model of the state of synchronized field with a coordinate system. It has been an equation in vector and matrix type appeared to be output on developing discrete model. The record is presented for entrance and transitional matrix on the basis of schematic structure of a discrete model of the state of asynchrony three-phase motor in synchronized fields with a coordinate system. The schematic structures are presented of the regulation and rotor flux in synchronized field with a coordinate system.Item СЪЗДАВАНЕ НА НЕПРЕКЪСНАТ МОДЕЛ НА СЪСТОЯНИЕТО НА АСИНХРОНЕН ДВИГАТЕЛ В УСТАНОВЕНА КООРДИНАТНА СИСТЕМА(Бургаски свободен университет, 2016) Сиракова, Даря; Лецковска, Силвия; Сейменлийски, КаменThe report examines the causes of a continuous pattern of the induction motor in an established coordinate system. To create the necessary model are derived equations. It can be used in the study of transient phenomena in the asynchronous motor in specific production.