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  Заглавие: Minimum word length determination of two-dimensional digital filters  Автор: Petrova, Petrana Angelova Дата: 1994 Резюме: In this paper an approach for minimum word length determination guaranteeing the stability of a specified two-dimensional digital filter (TDF) is suggested. For this purpose a state-space filter description is used. The stability condition of the TDF is brought to two single-dimension stability conditions. The lower bound of the machine ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Thermodynamic properties of real working mediums for conventional artillery weapons  Автор: Danov, Stanislav; Vassilev, Daniel Дата: 1994 Резюме: The thermodynamic behavior of gases from the gunpowder-burning is described by the Redlich-Kwong’s equation of state, valid for real gases under high pressure and temperature. Mathematical dependencies between thermal parameters (P, T, v) and caloric parameters (u, i, cp, cv) have been obtained. That enables us to create a mathematical model ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Correlation diagrams for prognosis and optimization of semiconducting ore minerals flotation  Автор: Baev, Ivan Alexandrov; Panayotov, Vladko Todorov Дата: 1994 Резюме: The flotation ability of semiconducting ore minerals depends essentially on the mineral surface state end properties. It was shown in [1] that the preliminary treatment of the semiconducting minerals galena, chalcopyrite and sphalerite in gas medium (ozone) leads to a significant improvement of the flotation yield. On the other hand, the ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: A convex censor product surface construction in Cad-Cam systems  Автор: Dicheva, Natasha Kirilova Дата: 1994 Резюме: Shape-control for geometrical objects, represented by curves and surfaces, received much attention in CAD-CAM applications in recent years.In 1984 Ferguson and Jones (1] stated the problem for convex spline curve construction as a constrained optimization problem. In [2] the problem of surface shape control is treated as a parametric network ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Adaptive observation of the volumetric mixture formation in ship's diesel engines  Автор: Sotirov, Ljubomir N.; Georgiev, Vassil D. Дата: 1994 Резюме: A system for adaptive observation, that is, for the identification of the unknown parameters of the volumetric mixture formation in ship’s diesel engines, with parallel estimation of the initial and current states, has been developed. It can be used the optimal design of the working procces of ship's diesel engines (SDE), and for fuller ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Adaptive observation of ship models  Автор: Sotlrov, Ljubomlr N.; Stanev, Stancho I.; Vasilev, Petar I. Дата: 1994 Резюме: Tests of the type "ZIG-ZAG", with remote controlled independent model have been organized to determine the dynamically characteristics of ship models. With the use of original algorithms for estimation of order, parameters and initial and current states discrete models that can be used in modeling and projecting systems for adaptive control ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Specific features of enterprise network design  Автор: Asenov, Oleg D. Дата: 1994 Резюме: The Enterprise networks are specific networks. They unite basic elements of network technology in original network decisions. The specific features of enterprise network design are connected with the application of inordinary approaches concerning the search for optimum decisions for network architecture. One of these approaches is the ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Structure of protocol entities in OSI architecture  Автор: Tashev, Tasho D.; Hristov, Hristo R. Дата: 1994 Резюме: The concept of Open Systems Interconnection (OSI) is accepted as the basis for the development and realization of the systems for the communication exchange [1). This paper presents one structural decomposition of protocol entities in OSI architecture. For this aim is provided the formalization of the basic terms of (he Reference Model (RM) ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Simulation modeling and investigation of the parallel processes communications in a multi-transputer system  Автор: Egorov, Aleksei; Romansky, Radi Дата: 1994 Резюме: This paper presents the results of simulation modeling organization and system parameters investigation of a multitransputer system that is managed by a message-passing operation system. The basic unit ot distributed system - processing nodes (transputer), is modeled by detailed queueing model. A SIMAN simulation model of parallel processes ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: System models based on graph grammars  Автор: Benes, Miroslav; Hruska, Tomis Дата: 1994 Резюме: The paper dealt with graph rewriting systems a* a tool for specification and evaluation of models. Graph model of a system can be decorated with attributes, values of which can be examined in application conditions and actions connected with rules. The expressiveness together with readability of such a system specification is very high. The ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Simulation techniques and tools for stochastic discrete systems  Автор: Rabova, Zdena; Janoi, Jaroslav Дата: 1994 Резюме: The set of suitable basic abstractions (building blocks), that can be used for effective object-oriented description of stochastic discrete simulation models, has been developed. The models can be described using processes, events, queues, and facilities. Several random number generators and procedures for statistical data collecting from ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Some decision trees* applications  Автор: Patev, Lubomir Дата: 1994 Резюме: The decision trees are known as a powerful tool for modelling the decision environment. They are known mostly from some managerial applications. Many practical decision problems are sequential decision problems, so there have been numerous successful applications of decision trees for large projects. Using the decision models for solving ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Free vibrations of torsional systems for engines  Автор: Pavlov, Stefan B. Дата: 1994 Резюме: In this development it is been made an analysis of free torsional vibrations of internal combustion engines.The author proposes an analytical method convenient for automation of calculations with the help of a computer instead of graphical methods,existing in the literature. This method permits easy and rapid modal analysis of engines. All ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Asynchronous approach to flash analogue to digital converter design  Автор: Popov, Angel; Manova, Darinka Дата: 1994 Резюме: A new class of flash analogue to digital converter is discussed. The architecture of the converter is asynchronous and is based on the use of comparators working without a clock signal. Three examples of comparator circuit design techniques are presented and compared together Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Video analogue to digital converter testing  Автор: Andreadis, I.; Tsalides, Ph. Дата: 1994 Резюме: Signal processing at video rates is a demanding task. A technique for dynamic testing of video analogue to digital converters (ADCs) is presented in this paper. The technique is based on the histogram computation when a sinewave is used as the input to the ADC. This test ensures the existence or non existence of missing codes and differential ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: A system for collecting and processing of information from stationary and mobile measuring device  Автор: Dimitrova, Nina Дата: 1994 Резюме: The system provides automatic collection, storage and data processing for the purposes of subsequent evaluation of after-effects resulted from industrial accidents and other emergency situations with discharges of high toxic, poisonous and harmful substances This evaluation is based on concrete data, received from stationary and mobile ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Adaptive observation of an electromechanical system  Автор: Sotirov, L.N.; Loutskanov, K.D.; Tchanev, D.G. Дата: 1994 Резюме: An original algorithm for adaptive observation (a combined identification of t e parameters and estimation of the initial and current state) of an.electromechanical system - impulse amplifier of power - DC motor The adaptive observation is made upon available information about the current speed and DC motor power supply changes. The results ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: A system for tactile information processing  Автор: Todorova, Velimira D.; Christov, Stephan M. Дата: 1994 Резюме: A system for information processing from a tactile array sensor on the basis a non-resonance piezoelectric transformer (NRPT) with a running bulk acoustic wave и presented in this paper. The information records as a delay time between the running wave front at each moment and the exciting pulse. The input-output parameters of the tactile ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Analog interfaces for temperature sensors with application in intelligent measuring systems  Автор: Shkevov, Rumen; Ivanov, Yanko; Chapkunov, Stefan Дата: 1994 Резюме: In this paper the analogue interfaces for platinum resistance temperature sensors, operating as a part of an intelligent measuring system are examined The interfaces are developed with a possibility for application to extremely heavy environmental conditions An analysis is made of the measuring block as a result of the critical increase of ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA
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  Заглавие: Computer system for hot particles parameters investigation  Автор: Andreev, Pavel G.; Ivanov, Nikolay I. Дата: 1994 Резюме: After the Chernobil incident, the questions related to the parameters and characteristic of hot particles(HP), becomes a great actuality. The main tools for its investigation are autoradiographic methods. During the process of registration over the photo sensitive material, the hot particles puts a pads over them. The form and size of this ... Библиотека:

  TECHNICAL UNIVERSITY - SOFIA

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