The paper deals with the parallel computer architecture of the MIMD paradigm being developed on the Department of Computers and Informatics [12], [13], [14], [15], [16], [17], [19], [21]. The main objective of the proposed architecture is, on the data flow (DF) principles to design a model of the parallel computer system for the high-performance of real-time problems programming [8], [9], [18], [22]. Parallel processing in that architecture model is executed by the dynamic multifunctional pipeline structure (19) of coordinating processors, which represents main components of the proposed data flow system.
The concepts of both the architecture layout and the dynamic pipeline implementation are presented in the paper. The contribution deals with the multifunctional pipeline components design of the DF architecture model. The high degree of the instruction-level parallelism [4], [5] is obtained in the proposed architecture. It is supposed that the hardware implementation of the architecture can be used as a specialised accelerator in problem-oriented computer systems with high requirements on the operation speed [9], [10], [11], [18], [19], [20], [23]. This research is supported by VEGA grand project No. 1/9027/2002.

This papers deals with the computer analysis of the electromagnetic compatibility (EMC) problems focused to the area of power electronics and performed by numerical computer simulation, which can also disclose the startling facts concerning.

A new conception regarding evaluation of partial discharges (PDs) within high voltage insulation systems is presented. Such evaluation is made on the grounds of the so-called calibrated acoustic emission (CAE) method worked out at Silesian University of Technology (Poland). Important elements of this measuring method are: registration of signals at real time, filtration of registered signals within selected frequency band, construction of an acoustic image of registered signals, analysis of amplitude distributions of AE signals made by two methods (by means of advanced AE descriptors and neuron network of Kohonen) with reference to investigations realized parallel by means of the electric method.

The paper presents possibilities of detection, measurements and localization of partial discharges appearing in high power transformers using acoustic emission method (AE). Generation of the AE signals by the partial discharges is discussed. A basic meter circuit is presented. Hypothetical results of partial discharges diagnostic in one of the transformers and also possible methods of PD localization are talked over. In the end a significance of the acoustic emission method in diagnostic of transformers is presented.

In this paper we describe three student projects elaborated for the IEEE Computer Society International Design Competition (CSIDC). All three projects involved students of software engineering and computer engineering who demonstrated excellence in design of a system consisted both from computer hardware and software. Moreover, the students had to invent the system specification with some additional constraints on used hardware and software and the theme of the competition. The main requirement was general benefit to society. In CSIDC 2000 students designed under the health care information appliance theme the Asthma Monitor & Allergy Data Information Appliance called AMADIA. The result of next year competition was the EUNICA system (Extensible Universal Control of Appliances). In the CSIDC 2002 our students elaborated mobile sleeping laboratory project. Both CSIDC 2001 and 2002 were oriented towards wireless communications using Bluetooth.

A method of adaptive text processing presented in this paper exploits typesetting system LaTeX. Essentially, the goal is to prepare correct LaTeX source files without any knowledge of LaTeX command, using the production tool, being currently developed - an adaptive text editor (ATE). Typographical correctness of target pdf, dvi, or ps documents is left to LaTeX and its style files. However, to prevent repetitive LaTeX translation, the target ATE files are syntactically correct .TEX files. At the same time, ATE is extensible to any new LaTeX command and/or environment. Finally, ATE is able to hide LaTeX commands and environments to a user, depending on the level of his knowledge; in extreme case, no knowledge is required. In this way, typesetting system LaTeX may be used not just by experts, but also by people unfamiliar with it at all. Hence, adaptive text processing may extend to many application areas, supporting them by correct typesetting. ATE is an open language system. Its text source files consists of hidden, visible and modifiable text areas that are terminal symbols of a language, which is a subset of LaTeX. LL(1) grammar of this language is defined using .TeX samples incrementally, in an interactive manner. The defined grammar is a part of ATE scheme. In this paper we concentrate to ATE schemes and the essential approach to their construction. 

The contribution deals with the use of artificial intelligence methods in the life diagnostics of Relanex insulating material that is applied as insulation of electrical machine windings. For example, neural networks are one applicable method. The method belongs to the appropriate tools that provide the modelling, identification and simulation of technological systems and units. In such a case, the insulating material is used as a modelled and identified system. We have used the above-mentioned neural networks for the diagnostics of insulating materials that were programmed in Matlab 6 environment. All simulations and the values calculated were also obtained by means of this product.

In this report, I presented the rules and implementation possibilities of Geographic Information Systems (GIS). This system collects, stores, processes and analyses data related spatially to the earth surface. GIS is commonly used in telecommunication, transport, public administration, demography and statistics, trade and power energy. The report concentrates on works that have already started and the expected future developments in the power energy sector.

A new approach for deriving the state space equations from the causal bond graph with derivative causality, on the basis of equivalent signal flow graph, is given. By following ”the paths of traveling” of two general bond graph variables (effort e and flow f) through the causal bond graph, the equivalent signal flow graph is obtained. On the basis of that signal flow graph, the system of equations with the first derivatives of state variables which are implicitly expressed, are formed. After their minor arranging the state space model is obtained.

This paper deals with object oriented modelling in cluster analysis based on the Mjolner BETA System and the BETA object oriented language. The model is designed in layers, which enables more flexibility and clear understanding. Object oriented modelling enables one to create a model that is more natural, and it is easy to extend or change its functionality. These features predetermine such a model for making experiments. Cluster analysis has many methods and techniques for helping to solve classification problems. Object oriented models enables one to exploit them in a more complex way and thus receive interesting results. We use this model on medical data for making a diagnosis. With the benefit of the Mjolner BETA System we used rich means for composition, virtual mechanism and persistence. Persistence allows one to split the whole application into rather simple parts and to store the results for the next usage.

The alga Chlorella kessleri is an ecologically important species used to remove toxic metals from the environment. A simulator of this alga can be very useful for biologists because of high financial and time expenses of the laboratory experiments. This paper compares two approaches to modelling of the algae population. Both of them are based on the artificial life methods, which means the synthetical (bottom-up) design of the model. The first one is a 2-dimensional multi-agent model where the alga cell is the basic element and act as agent in the environment represented by a discrete lattice. The second one was created as a Lindenmayer-systems application. In this case, the discrete elements of the environment and the alga cells are represented by symbols in a 1-dimensional string. Both models implement the same algorithm for the vital functions of the cells and the processes in the environment. For each model a simulator was built and run under various initial conditions to compare the models. The algae population growth and corresponding toxic metal sorption dynamics were explored. The simulation results show several small differences between the models, which are caused e.g. by the dimesion reduction and could be reduced by adjusting model parameters.

Attendant phenomenon of heat treatment processes is high energy demand. Its unstable factor depends mainly on thermal efficiency value of conversion system that is by the way related to temperature distribution on typical parameter of heated charge during the heating process. Temperature distribution is exactly defined with thermal field of heated charge.
This article presents analysis of thermal field in resistance heated conductive charge using the variable separation method. Field analysis is done for real case of direct resistance heating in solid charge so - called electrocontact heating.This heating is useable for standard methods of conductive materials heat treatment. The results of analysis is useable for optimalization of treatment parametres at objective heating.