TECHNICAL UNIVERSITY - SOFIA: Recent submissions

  • Blocked
    Title: Structure of protocol entities in OSI architecture  Author: Tashev, Tasho D.; Hristov, Hristo R. Date: 1994 Abstract: 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) ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Simulation modeling and investigation of the parallel processes communications in a multi-transputer system  Author: Egorov, Aleksei; Romansky, Radi Date: 1994 Abstract: 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 ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: System models based on graph grammars  Author: Benes, Miroslav; Hruska, Tomis Date: 1994 Abstract: 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 ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Simulation techniques and tools for stochastic discrete systems  Author: Rabova, Zdena; Janoi, Jaroslav Date: 1994 Abstract: 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 ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Some decision trees* applications  Author: Patev, Lubomir Date: 1994 Abstract: 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 ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Free vibrations of torsional systems for engines  Author: Pavlov, Stefan B. Date: 1994 Abstract: 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 ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Asynchronous approach to flash analogue to digital converter design  Author: Popov, Angel; Manova, Darinka Date: 1994 Abstract: 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 Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Video analogue to digital converter testing  Author: Andreadis, I.; Tsalides, Ph. Date: 1994 Abstract: 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 ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: A system for collecting and processing of information from stationary and mobile measuring device  Author: Dimitrova, Nina Date: 1994 Abstract: 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 ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Adaptive observation of an electromechanical system  Author: Sotirov, L.N.; Loutskanov, K.D.; Tchanev, D.G. Date: 1994 Abstract: 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 ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: A system for tactile information processing  Author: Todorova, Velimira D.; Christov, Stephan M. Date: 1994 Abstract: 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 ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Analog interfaces for temperature sensors with application in intelligent measuring systems  Author: Shkevov, Rumen; Ivanov, Yanko; Chapkunov, Stefan Date: 1994 Abstract: 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 ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Computer system for hot particles parameters investigation  Author: Andreev, Pavel G.; Ivanov, Nikolay I. Date: 1994 Abstract: 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 ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Microwave meter of distance with synchronized ADC - errors and problems  Author: Tashev, Ivan; Mitev, Mitio Date: 1994 Abstract: The experimental hardware and software are used only to develop the method for processing of this signal. A real working system was used for the experiments. The final tests show, that this method for signal processing works better than the device described in the beginning of this article. Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Two channel 16 inputs A/D controller DMA for IBM PC/AT  Author: Tyanev, Dimitar S.; Dobrev, Plamen D. Date: 1994 Abstract: This paper presents hardware and software realization of analog-to-digital controller (DC) for IBM compatible AT/PC ; exchanging data via 16-bits channels, by direct memory access. ADC converts two input signals parallel in time. Two additional pulse inputs of the controller mark the current reports in the two channels. This makes the system ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Dell developed technology increases performance, reliability, serviceability and upgradeability for network server platforms  Author: Sazdov, Simeon Date: 1994 Abstract: The 4000/XE Dell Server Series is a premier corporate server platform for the enterprise and builds on the strengths of Dell's award-winning SE server family to provide increased functionality at a lower overall cost to the user. The series is a new family of upgradeable, 486-based systems designed to provide industry-leading price/performance ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: A multi-transputer system organization and parallel processes communications modeling  Author: Egorov, Alaxej; Romansky, Radi Date: 1994 Abstract: The performance of a parallel multi-transputer system is determined by the effectiveness of processes communications between the different application program tasks at distinct processing nodes. The processing node structure and a multi-transputer system organization are described in this paper. Queueing models of parallel processes ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: An analysis of some parameters of functional elements for floating-point operations  Author: Manoilov, Peter Date: 1994 Abstract: Computer-aided design, digital signal processing, computer graphics and animation, research work and other areas of computer application require a great number of speedy calculations with arrays of floating-point data. Specialized VLSI integrated circuits for floating-point data operations used by the specialized computer processors are ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Efficient protocol computations  Author: Yanev, Sasho Date: 1994 Abstract: The high-speed networks propose completely different communication throughput, error rates and so on in comparison with the traditional ones. Now the bottleneck is moved from the physical transmission media to the unavoidable protocol processing. Furthermore new applications have appeared. They have bigger requirements concerning efficiency ... Library:
    TECHNICAL UNIVERSITY - SOFIA
  • Blocked
    Title: Approach for building an integrated information system  Author: Simonsky, Krassimir Date: 1994 Abstract: The aim of this paper is to discuss some of the key principles in building an integrated information system as well as to present a practical approach for solving problems when such a system is being developed. Each information system is unique because it consists of many elements and serves huge variety of purposes but there are some common ... Library:
    TECHNICAL UNIVERSITY - SOFIA

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