Title:On the existing of a limit cycle or a class of quasi-linear autonomous systems
Author:Raeva, Maya Borisova; Раева, Майя; Bekjarski, Aleksandar Bogdanov; Бекярски, Александър БогдановDate:1995Abstract:The quasi-linear autonomous systems have some interesting performances. It is shown in this article on existing of a limit cycle for a class of these systems. This class is defined and it is proofed a theorem for some cases. A computer program allow to make a visualization of the decisions of these systems. This show the exists of the limit ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Optimization problems in finite algebraic structures and some applications
Author:Bijev, Georgi Todorov; Бижев, Георги ТодоровDate:1995Abstract:Some methods and algorithms for computer investigations in finite algebraic structures, connected with optimization problems are considered in this paper. The application field could be investigations of the structures themselves as much as optimization problems. A minimum generating set (MGS) B of a given finite structure S is constructed. ...Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Computer assisted analysis and design for a class of dynamic systems
Author:Venkov, Gancho Iliev; Венков, Ганчо Илиев; Krushev, Nedyalko Ivov; Крушев, Недялко ИвовDate:1995Abstract:The structure and the main functions of the interactive system MOODS, developed by the autors, are described. This software system for optimization and visualization is applied for designing a class of dynamic systems. Two main problems are considered. The first problem deals with design via optimization of robust linear dynamic system with ...Library:
Title:За приложенията на алгебрата
Author:Маринов, Васил; Marinov, VasilDate:1995Abstract:In this paper some researches of polylinear algebra are pointed popularly. There are some facts about the applications of mathematics in the technics. Some author's algebraical problems are published in the second panLibrary:
TECHNICAL UNIVERSITY - SOFIA
Title:Импримитивни N-тькани в двумерно финслерово пространство
Author:Панайотова, Галина Стоянова; Panajotova, Galina StoyanovaDate:1995Abstract:In this paper are treared imprimhive n-tisstis in F. The concept imprimitives n-tissues concerning one-parameter Lie's group is defined, It also contains some special cases: imprimitive lines in F; imprimitives nets in F; imprimitives three-tissues in F.Library:
TECHNICAL UNIVERSITY - SOFIA
Title:Гранична задача с краен брой импулси за система с управление
Author:Каранджулов, Людмил Иванов; Karandjulov, Ljudmil IvanovDate:1995Abstract: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 BorisovDate:1995Abstract: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:
TECHNICAL UNIVERSITY - SOFIA
Title:Анализ на грешката на средства за измерване с робастностна обратна връзка
Author:Цветков, Пламен Маринов; Tzvetkov, Plamen Marinov; Йорданова, Снежана Тодорова; Yordanova, Snejana TodorovaDate:1995Abstract: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:
TECHNICAL UNIVERSITY - SOFIA
Title:Акустичен контрол при производството на фаянсови плочки
Author:Борисов, Борис Ненков; Borisov, Boris Nenkov; Пенчев, Любомир Пенчев; Penchev, Liubomir PenchevDate:1995Abstract: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 StefanovDate:1995Abstract: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, BlagovestDate:1995Abstract: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 GeorgievDate:1995Abstract: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 PetrovaDate:1995Abstract: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 ValchevDate:1995Abstract: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, НиколайDate:1995Abstract: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 BerovDate:1995Abstract: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 ВасилеваDate:1995Abstract: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 JordanovDate:1995Abstract: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: