Conference Program

Program of section Informatics

Lectures

 

Gheorghe Sebestyen, Anca Hangan, Vlad Olaru:
REAL-TIME ISSUES ON MULTICORE ARCHITECTURES
Presenter(s): Sebestyen, Gheorghe

Abstract

The current trend in microprocessor architectures goes toward using multicore and parallel solutions. For this reason, new challenges rise in using these components for control applications. An important aspect toward this approach is that parallel execution of control tasks may reduce the reaction time of a control application. But there are also some new issues related to the real-time behavior and time predictability of these architectures. The main goal of the paper is to identify these issues and find some generic solutions.

 

G. J. Paljak, I. Szombath, I. Kocsis, T. Kovácsházy, A. Pataricza:
MODEL-BASED CONTROL OF IT INFRASTRUCTURES
Presenter(s): Paljak, Gergely Janos

Abstract

 

Dávid Zakál, László Lengyel Dr.:
Feature Model-Driven Software Development
Presenter(s): Zakál, Dávid

Abstract

Software product lines enable the development and mass production of a set of similar systems by relying on predictable reuse of components. Instead of general collections of reusable assets the approach applies domain-specific, configurable artifacts for mass customization. Feature modeling provides an implementation-independent, compact representation for entity variants in the modeling domain. Features enable the hierarchical description of commonalities and differences between the entity variants. These characteristics make feature modeling a natural choice for the representation of variabilities in a software product line. Taking into account the characteristics both of the software product lines and modeling, current paper presents a feature modeling-based software product lines approach.

 

Karol Kostur:
THE STRUCTURE OF INFORMATION SYSTEM FOR UNDERGROUND COAL GASIFICATION
Presenter(s): KOSTUR, Karol

Abstract

At present time, energy sources from gas are very important. In Europe are coal deposits, which are not mined by classic technologies. Coal is possible to transform to gas by “Underground coal gasification“ (UCG). This technology is developed and improved in world. The information system (IS) of UCG will be described in paper. We had to solve based questions about the architecture; a structure of Information system for research of this technology. IS for research has specific tasks in comparing with information systems for business or technology. At first, IS should be flexible enough. It should enable to receive differently inputs (analogue, digital, text,…).Those are specific features of information systems, which help to improve the research. IS consists from two modules. One, we can characterize as monitoring system. Its basic function is sampling of measured data from experimental devices and suitable this data to present in real time and after real time. Some special procedures and software have been used. Second part of IS is a control system which consists from two levels (stabilization + optimization). Stabilization level consists from some automatic control circuits, which are not work at present time. Their mutual cooperation is given by actual conditions during UCG. Controllers are based on standard control theory. Third feature is a way of mutual communication. Control of computer’s processes requires using some methods (flags, gates) and system of priorities. Others functions are standard for example data saving, communication with users/operators. Information system has been realized by PLC and PC platform.

 

Gabriel Zahorcak:
LOCOMOTION OF MOBILE ROBOTS
Presenter(s): Not defined.

Abstract

Mobile robots moving on the surface have got equal, or nearly equal, areas such as navigation, route planning methods, detection of obstacles and sensorial equipment. This article deals with the locomotion of the mobile robots. It analyzes the basic structure of the mobile robots` kinematic systems on the basis of the motion mechanism type and provides a brief description of advantages and disadvantages of each variant. The aim is to provide the basic information that will aid in the selection of the suitable locomotion for a mobile robot. It focused myself mainly towards the description of the two ways of locomotion that are the walking and wheel movement.

Posters

 

P. Cirbes, P. Horovčák:
AUTOMATION OF CONTRACT NEGOTIATION PROCESS BASED ON UBL 2.0

Abstract

The contribution deals with contract negotiation process based on Universal Business Language (UBL) 2.0 standard in the framework of the project ESFES (E-Services for Support of Collaboration and Business Activities of SMEs, SRDA/ VMSP-P-0055-07). The UBL is a product of an international effort to define a royalty-free library of standard electronic XML business documents to cover a supply chain from sourcing to payment, but it lacks support for business contracts creation and negotiation. Main goal of contribution is to verify if UBL standard is suitable and comprehensive enough to cover contracting process and to describe electronic platform that implements mentioned process for needs of virtual organization. The contribution firstly describes why contract negotiation is needed for business collaboration of small and medium enterprises (SMEs) and what its benefits are. Secondly it describes approach to creation of individual contract document XML schemas based on UBL 2.0 business components library as well as customization of these components. Each document schema is then implemented in MS InfoPath as an electronic form to enhance user experience. The next step contribution deals with is creation of contract negotiation process based on mentioned documents. Contract negotiation process is inspired by UBL processes and is modeled in UML as activity diagram. Implementation of this process is in Business Process Execution Language (BPEL) and realized in Enterprise Service Bus (ESB) environment. Preliminary results shows that UBL standard is suitable for this type of documents, but it needs to be extended with additional terms to fully cover contract process. Implementation in BPEL and realization through ESB seem as right way that allows extension of this solution with ontology support in the future.

 

Gabriella Daróczy:
Artificial Intelligence, Computers and Human (Information processes, differences, models)

Abstract

The main goal of this paper is to represent the differences between human and computer (artificial intelligence application), to show the barriers of information processing, and examine applied models. This examination will focus on the concepts in artificial intelligence, and the existing application of it. After a short introduction about artificial intelligence and cognitive psychology the following topic will be examined: information processing, environment, capacities, missing factors, decision making theories.

 

Bence Formanek, Dr. Tihamér Ádám:
DSP Implementation of an MPEG-2 Video Bitrate Transcoder

Abstract

Digital video compression is already an important technology in virtually every type of video application. As the trend toward media convergence continues, compression and interoperability will only become more critical. Different networks, for example broadcast channels, IP networks or the Internet, place bandwidth constraints on the video transmission. To the contrary most movies today are stored in DVD with high bit rate MPEG-2 format and TV programs originally compressed at a high bit rate by studio applications, to keep the video quality close to the original. The bandwidth limits of video-on-demand, video-streaming-over-IP or broadcast systems require the video data to be converted to a more bandwidth-efficient bit rate by real-time video transcoding before transmission. Another example in broadcast networks is statistical multiplexing, when multiple variable-bit-rate video streams from different sources are multiplexed together to achieve the statistical multiplexing gain. When the aggregated bit rate exceeds the channel bandwidth, a transcoder can be used to adapt the bit rates of the video streams to ensure that the aggregated bit rate always satisfies the channel bandwidth constraint. In DSP applications it is important to reduce the computation complexity. A video transcoding algorithm has access to many coding parameters and statistics that can be easily obtained from the input compressed video stream, and those can be used not only to simplify the computation, but also to improve the video quality. In this paper, we propose a DSP implementation of a low complexity open loop MPEG-2 video transcoder, working entirely in the frequency domain. The open-loop transcoders are computationally efficient, since they operate directly on the DCT coefficients, so they are mainly used in systems with real-time requirements.

 

J.KUKURUGYA, J. TERPÁK:
SUPPORT SOFTWARE TOOL FOR PROCESSING OF DATA FROM CONTINUOUS STEEL CASTING PROCESS

Abstract

The article deals with design of a support software tool for processing and analysis of data from continuous steel casting process. First, the process of continuous steel casting as well as variables affecting this process are characterized. Next, statistic methods for processing of a large volume of data and individual modules of proposed software tool are suggested. Developed scripts and functions, as well as used standard MATLAB functions are described, for better understanding of the tool. The output of proposed tool is demonstrated on an example using model data. The possibilities of software tool extension are suggested in conclusion.

 

István Pógár:
A home-built radio-signal controlled clock

Abstract

The instrument described below is a radio-signal controlled clock. It is not only a usual digital clock, it is also able to synchronize itself to a radio signal broadcasted from Germany, and displays the “exact atomic time” at proper receiving conditions a few minutes after turning it on. The central part of the clock is a PIC16F877 microcontroller, which is able to accommodate the tasks necessary to ensure that the device works properly.