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Proceedings of the Technical university of Sofia, 1995 -
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Proceedings of the Technical university of Sofia, 1995 -: Последно депозирани

Показване на публикации 481-500 от 853

Заглавие: Управляемост и наблюдаемост на нелинейни системи : методът на диференциалната геометрия Автор: Перев, Камен Лазаров; Иванова, Мариола Найденова; Perev, Kamen Lazarov; Ivanova, Mariola Naydenova Дата: 1999 Резюме: This paper considers the problem of controllability and observability of a class nonlinear systems. A short introduction to the theory of differential geometry is presented. In the differential geometric framework is given the system description, which is nonlinear in state but linear with respect to input signals. The similarities and ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Condition and error estimates in the numerical solution of matrix equations in control theory Автор: Petkov, Petko; Konstantinov, Mihail; Christov, Nicolai; Петков, Петко; Константинов, Михаил; Христов, Николай Дата: 1999 Резюме: The condition number and error estimation in the numerical solution of matrix algebraic continuous-time and discrete-time Lyapunov and Riccati equations is considered. The estimates presented involve the solution of triangular Lyapunov equations along with usage of the LAPACK norm estimator. Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Децентрализиран подход към спецификация на услугите на интелигентна мрежа Автор: Пенчева, Евелина Николова; Pencheva, Evelina Nikolova Дата: 1995 Резюме: This paper presents a model of Intelligent Network (IN) services using the decentralized approach to specification of service logic and data at the level of distributed functional plane. This alternative is based on the assumption that the service logic is distributed among the Functional Entities represented as SDL processes, that are ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Централизиран подход към спецификация на услугите на интелигентна мрежа Автор: Пенчева, Евелина Николова; Pencheva, Evelina Nikolova Дата: 1995 Резюме: The paper presents a model of Intelligent Network (IN) services using the centralized approach to specification of service logic and data at the level of distributed functional Plane. This alternative is based on the assumption that functional entities should not be adapted to different uses in different services. The service logic is ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Изследване на оптичен сензор на промишлен робот Автор: Видеков, Валентин Христов; Джамийков, Тодор Стоянов; Videkov, Valentin Hristov Дата: 1995 Резюме: A manipulator for industrial robot is treated. On the manipulator it mounted an optical sensor for detection of a semiconductor substrate presence. In the paper IS presented an algorithm and results from the examination of the fuming out diagram of a forward and vertical optical sensor. Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Активни стратегии за разпознаване на форми Автор: Венков, Пенчо Георгиев; Venkov, Pentcho Georgiev Дата: 1999 Резюме: Some general suggestions are involved to outline the implementation of usefull algorithms for edge detection and controur segmentation in the practical vision systems. The model-based approach of analysis is compared against general passive methods of contour extraction and shape recognition. The new approach, proposed in this paper is based ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Градиентен подход за Hough трансформация на праволинейни сегменти в изображения с нива на сиво Автор: Каменова, Нина Петрова; Kamenova, Nina Petrova; Венков, Пенчо Георгиев; Venkov, Pentcho Georgiev Дата: 1999 Резюме: In this paper is described the developed gradient approach for Hough transform of detecting line segments in grey level images. The main idea of the offered approach consists in definig of edge points in the image, with an Sobel operator and an thresholding detector. Each of this points is mapped in a Hough space in an only one point by ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Анализ на разширеното акумулаторно пространство на Hough за опрделяне на праволинейни контурни сегменти Автор: Каменова, Нина Петрова; Венков, Пенчо Георгиев; Kamenova, Nina Petrova; Venkov, Pentcho Georgiev Дата: 1999 Резюме: The subject of the current paper is the detection of line segments by analyzing of the information in the expanded Hough space, resulting of the mapping of edge points in the parameter space by the gradient approach. The analysis consist of two stages procedure: in the first stage are detected local extrema by clustering of the neighbouring ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Имитационно моделиране на едноканална телетрафична система с чакане при неравномерен входящ поток Автор: Мирчев, Сеферин Тодоров; Mirtchev, Seferin Todorov Дата: 1995 Резюме: In this paper a simulation algorithm of the single waiting .system with constant service time, finite buffer and peaked input stream is explained. During the progress of the simulation, interarrival time is determined by random numbers and when the call terminate this interval is corrected. -It is shown that the single waiting system with ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Коаксиален датчик за пермеаметър Автор: Сладкаров, Александър Маринов; Sladkarov, Alexandar Marinov Дата: 1995 Резюме: In the paper an analysis of the possibility of magnetic permeability measurement of ferrite sample placed in coaxial waveguide is developed. The proper frequency range of the resonant measurement with coaxial permeameter is investigated. The requirements of the parameters of the samples and short-circuiting coaxial waveguide are obtained. Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Обектно – ориентиран подход за извличане на речеви параметри Автор: Атанасов, Венцислав Борисов; Момчеджиков, Михаил Благоев; Momchedzhikov, Mihail Blagoev; Atanassov, Ventsislav Borissov Дата: 1995 Резюме: The object-oriented approach for the implementation of an experimental system for extraction of acoustic speech parameters is discussed in the article. The article stresses the building of hierarchy of classes which serve the software system, as superstructure of standard defined classes of Object Windows library (OWL) and ClassLib in the ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Сравнителен анализ на някои методи за защита на говорна информация Автор: Момчеджиков, Михаил Благоев; Ле Хай Чау; Чобански, Валентин Н.; Momchedzhikov, Mihail Blagoev; Le Hay Chau Дата: 1995 Резюме: Cryptography is essential for the reliability of the radio connection. Ciphering aims at choosing a technology that will provide the desired reliability of deciphering A comparative analysis of some methods for ciphering speech information is proposed in the article. The criteria for comparing the methods are based on cryptoanalysis, ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Изследване на признаците за разпознаване на текст на монголски език Автор: Бекярски, Александър Богданов; Осорин, Л.; Bekyarski, Alexandar Bogdanov; Osorin, L. Дата: 1995 Резюме: Recognition of letters in mongolian alphabet is a problem the solving of which is very important for more wide applications of national alphabet in Mongolia. The mongolian letters consist of some basic figures (primares) elements. Therefor first must be made the recognition of these basic elements in mongolian words. It is proposed in this ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Алторитъм за анализ на портретни изображения с помощта на невронни мрежи с обратно разпространение на грешките / Румен Кунчев, Димитър Атанасов. (Комуникации). // Годишник на ТУ-София, Том 48, 1995, № 4. Електроника, комуникации, информатика, автоматика : Юбилейна научна сесия „50 години ТУ–София“ 11-12.10.1995 София, с. 111-118 Автор: Кунчев, Румен Кирилов; Атанасов, Димитър; Kunchev, Rumen Kirilov; Atanasov, Dimitar Дата: 1995 Резюме: In this paper is presented a two-stage algorithm for location of geometric visual features in human faces. The first stage generates search regions for centers of eyes and mouth from coarse-resolution image. The second stage. uses those search regions to select 12 features inside the high-resolution image data: left, right corners, top, ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Критерии за определяне зоната на действие на интермодулационните смущения при въздухоплавателните служби Автор: Додов, Никола Иванов; Панков, Борислав; Dodov, Nikola Ivanov; Pankov, Borislav Дата: 1995 Резюме: The present and future development of the FM sound-broadcasting networks in our country can lead to unacceptable interferences with the navigation and communication radio equipment of aeronautical services. Two kinds of interferences - these resulting from intermodulation products caused by different radio transmitters operating on common ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Gate delay model of pass - transistor logic Автор: Chumachenko, Vasiliy Platonovich; Vasileva, Tanichka Krumova; Чумаченко, Василий Платонович; Василева, Таничка Крумова Дата: 1995 Резюме: A simple gate delay model useful for analysis and optimization of pass-transistor logic circuit is proposed. The macromodel is based on device equation and is found to be an analytical function of capacitive. load and device sizes. Curve fitting of model equation to SPICE simulation results is used for coefficient obtaining. The procedure ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Бърз алгоритъм за определяне разпределението на параметрите на комуникационни устройства и системи Автор: Ненов, Георги Димитров; Nenov, Georgi Dimitrov; Лишков, Славчо Димитров; Lishkov, Slavcho Dimitrov Дата: 1995 Резюме: In this paper we introduce a fast algorithm for estimation of the distribution of output parameters of communication systems and devices. For this purpose a fraction factorization experiment is used. A decimation in observation time is achived and representativness of the data record is ensured. Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Компютърни радиомрежи за дистанционен контрол и управление Автор: Алтимирски, Емил Савов; Altimirski, Emil Savov Дата: 1995 Резюме: The paper provides information about the scientific investigations and applications in the field of computer radionetworks for remote monitoring and control of more than 2000 distant objects in electrical supply, water supply, environment protection, hydrometeorogical service, security systems, military service etc. The design and application ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Точностни характеристики на радиометричния екологичен мониторинг в инфрачервения обхват Автор: Фердинандов, Ервин Стефанов; Ferdinandov, Ervin Stefanov Дата: 1995 Резюме: The communication channel of a radiometric system for receiving, transmitting and processing of temperature distribution data of earth and water surfaces has been analysed of the needs of remote ecological monitoring in the infrared spectral range. Expressions have been derived for the signal - to - noise ratio and measurement resolution. ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Възможности за повишаване ефективността на силициев фотоелемент Автор: Витанов, Петко Костадинов; Vitanov, Petko Kostadinov; Тютюнджиев, Николай Христов; Tyutyundzhiev, Nikolay Hristov; Каменова, Марийка Тодорова; Kamenova, Mariyka Todorova; Делибашева, Мария Христова; Delibasheva, Mariya Hristova Дата: 1995 Резюме: On the top n+ — region of the standard n+p solar cell used in the experiment was formed thin porous silicon (PS) layer. The photovoltaic properties of two identical samples with and without porous silicon are compared. The tested structures are measured under solar simulated light of 100 mW/cm2. It was observed that the short circuit current ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA

Показване на публикации 481-500 от 853

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