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TECHNICAL UNIVERSITY - SOFIA: Recent submissions

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Title: Гранична задача с краен брой импулси за система с управление Author: Каранджулов, Людмил Иванов; Karandjulov, Ljudmil Ivanov Date: 1995 Abstract: This work considers controlled differentia! system with boundary and impulsive conditions. A necessary and sufficient conditions for existence of a family of controls and corresponding family of solutions of the differential system, satisfying the generalized boundary and impulse conditions are obtained. For the analysis of a linear ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Asymptotic optimal algorithms for detecting signals in m-dependent markov noise Author: Шишков, Благовест Борисов; Shishkov, Blagovest Borisov Date: 1995 Abstract: Asymptotic optima! (AO) algorithms for detection of signals in additive in¬dependent Markov noise are synthesized. The algorithms require the storage of m past dam samples to achieve optimum performance. Il is A 0 memory discrete-time detector of a deterministic or qiiasideterministic signal in m-dependent Markov noise, As a measure of ... Library:
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Title: Анализ на грешката на средства за измерване с робастностна обратна връзка Author: Цветков, Пламен Маринов; Tzvetkov, Plamen Marinov; Йорданова, Снежана Тодорова; Yordanova, Snejana Todorova Date: 1995 Abstract: A measuring system with robustness feedback is proposed . An accuracy analysis of the system is carried out. The results obtained from the analytically derived expressions for the error of the measuring system and from the simulation of an example for a measuring device via the program SIMULINK prove the effectiveness of the robustness ... Library:
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Title: Акустичен контрол при производството на фаянсови плочки Author: Борисов, Борис Ненков; Borisov, Boris Nenkov; Пенчев, Любомир Пенчев; Penchev, Liubomir Penchev Date: 1995 Abstract: The possibility for поп-destructive control on the quality of ceramic tiles at the intermediate stage of their production is proven on the basis of the criteria suggested in this report. The efficiency of the method has been confirmed by industrial tests. Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Позиционно електрозадвижване за мраморообработващи машини Author: Борисов, Борис Ненков; Borisov, Boris Nenkov; Гебов, Владимир Крумов; Ghebov, Vladimir Krumov; Генадиев, Асен Стефанов; Ghcnadiev, Assen Stefanov Date: 1995 Abstract: This report proves that by choosing a suitable control system, the size of end products can be quarantined for long periods of operation. An algorithm for control of the cutting tool. The precision of control has been proven by industrial tests. Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Времево планиране на действия в робототехнически системи чрез клас обременени мрежи на петри и евристично търсене Author: Димитров, Димитър; Dimitrov, Dimitar; Владимиров, Благовест; Vladimirov, Blagovest Date: 1995 Abstract: A new model for solving the NP-hard problem of scheduling actions in robotic and FMS systems is presented. Actions share resources (machines, tools, etc.) and can be partially ordered or completely unordered. The model is based on the extended timed Petri Net (PN) in which time is treated not as an external resource, but really does participate ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Моделно-воден анализ на изображения Author: Венков, Пенчо Георгиев; Venkov, Pentcho Georgiev Date: 1995 Abstract: A method is developed to recognize and locate randomly oriented and partially occulted "flat" objects. It is based upon matching the edge descriptions of an image with models of 2 D objects, represented by segmented polygonal contours. The method uses a technique of hypotheses generation to predict the position of a model in the scene by ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Модифициран метод на hough за разпознаване на обекти Author: Венков, Пенчо Георгиев; Venkov, Pentcho Georgiev; Каменова, Нина Петрова; Kamenova, Nina Petrova Date: 1995 Abstract: Some improvements of the classical Hough Transform Method (H.T.) for con¬tour segmentation have been introduced in order to save computational time and to preserve from the incorrect chaining and merging of collinear segments. A third diminution of the accumulator array in the parameter space contribute to store the extreme points of each ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Теоретични модели на биосензорни системи с различна ензимна кинетика Author: Нейков, Александър Нейков; Neykov, Alexander Neykov; Стоянов, Стоян Неделчев; Stoyanov, Stoyan Nedelchev; Георгиев, Цанко Петров; Georgiev, Tsanko Petrov; Костов, Йордан Вълчев; Kostov, Iordan Valchev Date: 1995 Abstract: In this paper six general analytical models for amperometric membrane biosensors are purposed and researched. Biosensors can work in steady-state mode with product- or cosubstrate-sensivity electrochemical sensor. An analysis of input-output functions is made and parameter influences is evaluated. The results are represented in graphics. ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Optimal design of channel distribution under uncertainty (A life insurance pricing example) Author: Sapundjiev, George Neshev; Сапунджиев, Георги Нешев; Handjijska, Katia; Ханджийска, Катя; Mincoff, Nikolai; Минков, Николай Date: 1995 Abstract: In this paper a fuzzy geometric programming (GP) based approach to the optimal design of channel distribution in life-insurance decision making is described. Volumes of sold life-insurance policies are independent variables of the model whereas price (premiums), advertising expenses and number of insurance agents are considered as dependent ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Качествен контрол чрез методи за разпознаване на образи и анализ на акустични сигнали Author: Гълъбов, Васил Тотев; Galabov, Vassil Totev; Маринов, Марин Беров; Marinov, Marin Berov Date: 1995 Abstract: The possibility for applying of pattern recognition and signal analysis methods is investigated in order to develop a quality control system for serial products through their classification on the base of the emitted acoustic noises in operation mode. From the time-domain analysis of these noises are detected such typical defects as ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Higher-order rational s-to-z transformations Author: Georgiev, Vladimir Ivanov; Георгиев, Владимир Иванов; Gurova, Elissaveta Vassileva; Гурова, Елисавета Василева Date: 1995 Abstract: A number of different s-z transformations either based on numerical integration methods or derived directly from the mapping function are considered. The transformations and their properties are compared on an uniform basis. A study of the relationship between the continuous-time and the discrete-time frequency, the stability region and the ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Алгоритми за диспечиране в системи за реално време Author: Мизхер, Уалид Казем; Mizher, Waleed Kasem; Патрашков, Румен Йорданов; Patrashkov, Rumen Jordanov Date: 1995 Abstract: В статията е направен опит да се обобщи състоянието на разработва¬ните алгоритми в системите за реално време. Дискутирани са четири постановки, подчертаващи подходите за диспечиране. Това са: статично-таблично управляемо диспечиране, статично диспечиране с прекъсване на приоритетите; динамично, пла¬нирано диспечиране; динамично с най-добър ефект диспечиране. Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Scheduling algorithms for real -time systems (2) Author: Mizher, Waleed Kasem; Мизхер, Уалид Казем; Patrashkov, Rumen Jordanov; Патрашков, Румен Йорданов Date: 1995 Abstract: In the first paper we summarized the state of the real-time field in the area of scheduling. Also we have categorized the state of the art into four paradigms are: static table- driven scheduling, static priority preemptive scheduling, dynamic planning-based scheduling and dynamic best effort scheduling. In this paper we will discuss these ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Модел и алгоритъм за определяне на семантичната структура на локативни наименования в български, полски и руски език Author: Виларова, Маргарита Димитрова; Vilarova, Margarita Dimitrova; Ангелов, Николай Петров; Angelov, Nikolai Petrov Date: 1995 Abstract: The structural semantic model for description of word group with a common lo¬cation indicating semantics was formulated based on a study of word-building types in common for three Slavonic languages (Bulgarian, Polish and Russian). Based upon a specific linguistic material, an algorithm and PC software were developed, by means of which a ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Съвременни проблеми на теорията на автоматичното управление Author: Томов, Илия Иванов; Tomov, Ilia Ivanov Date: 1995 Abstract: A brief review of the results of the automatic control theory is presented in the first part of the paper. The main part of the paper is devoted to the problems of control in the case of a priory uncertainty. The recent results of theory of robust and adaptive control systems and the directions of future investigations in this area are discussed. Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Синтез на cap с използуване на интервален метод Author: Пенев, Д. H .; Penev, D. N.; Колев, Л. В.; Kolev, L. V. Date: 1995 Abstract: Presently, there exist a number of methods for parametric synthesis of Unear control systems. Most of then are based on the assumption that all the parameters of the plant have fixed well-know values. In the present paper, use of interval approach is suggested for the parametric synthesis of control systems. An algorithm is developed for ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Критерий за робастна устойчивост на линейни вериги и системи Author: Колев, Любомир Варадинов; Kolev, lyubomir Varadinov Date: 1995 Abstract: A criterion (necessary and sufficient conditions) for robust stability of linear circuits (systems) with interval parameters is suggested, which is applicable to circuits described by their characteristic polynomial. It reduces to checking the inconsistency of a corresponding system of non-linear equalities and inequalities. An appropriate ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Подход на интервалния анализ и алгоритми за решаване на мрежови задачи и задачи на динамичното програмиране при параметрична неопределеност Author: Гатев, Гео Иванов; Gatev, Geo Ivanov Date: 1995 Abstract: Interval analysis approach and algorithms for solving network and dynamic programming problems under parametric uncertainty are presented. An appropriate metric is introduced on the set of all intervals and simple necessary a sufficient conditions for checking the relation < are proposed. The offered algorithms are more effective than the ... Library:
TECHNICAL UNIVERSITY - SOFIA
Title: Изследване на формални модели на аристотелевата силогистика чрез компютърно моделиране Author: Янков, Боян Янков; Yankov, Boyan Yankov; Шойлев, Христо Захариев; Shoilev, Christo Zahariev Date: 1995 Abstract: The problems of computer modeling with Aristoteles Syllogismus is discuss in this paper. It is possible inference of the new knowledge make with different logic, classic and nonclassic (Russel, Frege, Luis). In this work is applied the operators of sententional logic and here is present the predicament of produce. Library:
TECHNICAL UNIVERSITY - SOFIA