Program of section Embedded and Information Systems

Lectures

RefNr: 38 (Review state=accepted_lecture)

Csaba Tóth, Balázs Scherer, László Kádár:
TRANSDUCER COUPLER FOR WIRED AND WIRELESS NETWORKS
Presenters: Scherer, Balázs
Abstract

A smart transducer coupler was developed that can integrate general-purpose network independent transducers (sensors and actuators) into a TCP/IP network for centralised data acquisition and control. The low cost device is usable as an off-the-shelf component in most applications of the kind, requiring but the minimum of configuration efforts at the manager station side. The easy-to-handle, component-based centralised system is based on the IEEE 1451.2 STIM specification for the sensor/actuator modules, and an SNMP based configuration interface with TFTP based data services for the transducer coupler. A simplified version of the IEEE 1451.1 object model was implemented inside the transducer coupler to control the connected STIM.

RefNr: 51 (Review state=accepted_lecture)

Stehlíková Beáta, Kostúr Karol, Jaco Martin:
Technological process distortions identification by digital cameras taken
Presenters: None.
Abstract

A observing of technological process and computer evaluation can substitute a human sense and subjective decisions during the control of process. Not all technological processes can be simply described and also we cannot determine their behavior or automatically control them. This contribution describes researching a suitable quantitative variable, which has properties providing a description and control process of making steel in terms of occurrences of outflow and slopping. Digital cameras take the process of making steel in convertor. The searching variable should be able to have value on numerical scale. It have to been conclude significant different between values of variable from process with distortion (outflow, slopping) and the values of variable from process without distortion. Imaging data are divided on pictures and processed in order to get a result about different. That is realized in Matlab?s environment.

RefNr: 61 (Review state=accepted_lecture)

Marek Babiuch, David Fojtík:
NEW OBJECT PROPERTIES OF VISUAL BASIC .NET 2005
Presenters: Babiuch, Marek
Abstract

This contribution describes the latest novelties, which the newly prepared Visual Basic .NET 2005 brings. It deals closely with new commands and features of the language, namely from the area of object oriented programming.

RefNr: 77 (Review state=accepted_lecture)

Jozef Sta?ák:
IMAGE DATABASES DESIGNED AND IMPLEMENTED BASED ON FUZZY SET ALGORITHMS
Presenters: None.
Abstract

This contribution deals with problems related to Image Fuzzy Databases, their structure and features together with their conceptual and logical model. When providing a creation and update of the Image Fuzzy Set Database, image semantic analysis aspects play a role of great importance. However, the problems of fuzzy set algorithms for retrieval, presentation and data analysis from design and implementation of view create an important part of that contribution, as well.

RefNr: 84 (Review state=accepted_lecture)

Renata Ivancsy and Istvan Vajk:
SEQTREEMINER: A NEW APPROACH TO SEQUENCE MINING
Presenters: Ivancsy, Renata
Abstract

Sequence mining is a heavily researched area in the field of data mining. The aim of sequential pattern mining is to find frequently recurring patterns in a given sequence dataset, which can be a database containing customer sequences, DNS sequences, or WEB log data. The algorithms dealing with this problem have different basic concepts to discover the frequent sequences; there are level-wise methods or transaction projection-based methods. All methods have their advantages and disadvantages firstly in the computational complexity and the memory requirement. In this paper a novel approach is introduced where the mining task is completed by using a modified tree miner algorithm. It is shown how the sequences can be represented as trees, and how the well-known TreeMiner algorithm has to be modified in order to discover the frequent subsequences efficiently.

RefNr: 102 (Review state=accepted_lecture)

H. H. El-Mestarihi, A. Lavrin, T. Rovina, S. Sevec, A. Bulnova, and I. Podlubny:
Information technology support for on-line and distance learning
Presenters: Podlubny, Igor
Abstract

In this article we present a review of most frequently used systems for supporting on-line and distance education. We discuss basic principles and possible approaches to this specific kind of contents management systems. In the case study, we provide a detailed comparison of the Blackboard, Fle3, Moodle, Claroline, and Ulearn systems from the viewpoint of several selected criteria (tools for students, tools for instructors, auxiliary tools, administrating, prices and licensing conditions, etc.)

RefNr: 103 (Review state=accepted_lecture)

A. S. N. Al-Khatib and I. Podlubny:
Web standards and accessibility analysis
Presenters: Podlubny, Igor
Abstract

In this article we present a review of most frequently used web standards and techniques, on one hand, and the available tools for validating the web page and web site source code, style, accessibility aspects, on the other. We present a case study of two years of the Slovak National Web Page Contest, where we studied the quality of coding and standard compliance.

RefNr: 111 (Review state=accepted_lecture)

Nicoale ROBU, Vasile STOICU-TIVADAR, Ioan SILEA, Adriana ALBU, Dorin BERIAN, Gabriel VLASIU:
A FLEXIBLE SOLUTION FOR THE EXTERNAL DATABASE OF A LOTUS-BASED REGIONAL E-ADMINISTRATION NETWORK
Presenters: Silea, Ioan
Abstract

This paper presents several aspects of building an integrated Regional E-administration system. This system is a document-oriented, data collecting network, that ensures the link between the Timiş County Council and the local administration and is based on Lotus technology. The external database structure of the system, and the way that this structure allows a high level of flexibility in adding new documents to the system, are presented and conclusions are yielded.

RefNr: 116 (Review state=accepted_lecture)

Gábor Kovács, Tibor Berceli:
OPTICAL SIGNAL PROCESSING AND FIBER DISPERSION ANALYSIS IN SUPPRESSED CARRIER SYSTEMS
Presenters: Kovacs, Gabor
Abstract

In this paper a new optical packet switching node concept is proposed, and the main features are introduced. This node utilises optical filtering for subcarrier modulated signal processing, enabling direct detection of the modulated information on the subcarrier. Fiber dispersion effect on the detected signal is also investigeted.

RefNr: 117 (Review state=accepted_lecture)

Penicka J., Volejnik O., Modrlak O.:
An open distributed control and vizualization system based on .NET
Presenters: Volejník, Ondřej; Penicka, Jan
Abstract

This paper is dealing with the design of concept for open software solution to the monitoring and control of systems by means of Internet. This software solution is based on .NET. We define basic principles and previews at the whole system as a complex. The essential requirement is that the developing system would be utilizable in laboratories of our department for control of models which serve for the education of students and scientific researches. Present-days shows as desirable that the whole system would be easily applicable in the case of need for industrial production.

RefNr: 124 (Review state=accepted_lecture)

Ferenc Kovács and Sándor Juhász:
DISTRIBUTED ASSOCIATION RULE MINING ALGORITHMS ON HETEROGENEOUS PC CLUSTERS
Presenters: None.
Abstract

One of the most important problems in data mining is association rule mining. It requires very large computation and I/O traffic capacity. For that reason there are several parallel mining algorithms, which can take advantage of the performance of the cluster systems, but these algorithms are optimised and developed on supercomputer platforms. Capacity of PC keeps the possibility to build cluster systems cheaper, but usage of them raises some issues about the optimisation of the distributed mining algorithms, especially the cost of the node to node communication, initial data distribution and behaviour of the heterogeneous nodes. The main part of the distributed association rule mining algorithms is developed on supercomputer platform where the nodes are similar to each other. In this paper a new distributed association rule mining algorithm is introduced, which is based on modified version of the Count Distribution algorithm, which give a solution of handling heterogeneous node configuration.

RefNr: 128 (Review state=accepted_lecture)

SMUTNY, Pavel:
DEALING WITH WEB DECAY IN THE INFORMATIONAL PORTAL E-AUTOMATIZACE
Presenters: Smutny, Pavel
Abstract

This contribution describes relevant questions about web decay. It deals closely with possible solutions of web link integrity. In concrete terms a process of dealing with broken links is described in the informational web portal e?Automatizace.

RefNr: 129 (Review state=accepted_lecture)

Jiri KULHANEK, Radim FARANA:
ADVANTAGES OF VIRTUAL PC FOR SOFTWARE DEVELOPERS
Presenters: Farana, Radim; Kulhanek, Jiri
Abstract

Production of modern software technologies and tools is faster and faster, and demands great flexibility on software developers. The developers encounter many problems with integration of modern technologies to theirs software projects. One of the most important problems is the incompatibility of various technologies and components, especially in case of some pre production alpha or beta version of technologies. Interesting possibility for developers is an easy way of various testing platforms creating by the use of virtual PC technology. The paper describes main features of virtual PC technology and highlights great advantages for software developers. Hardware resource requirements and overall performance are shortly described too.

RefNr: 143 (Review state=accepted_lecture)

Joao DUARTE, Stanislav RACEK:
USING A SIMPLE RENDEZVOUS MECHANISM IN JAVA
Presenters: None.
Abstract

This article presents a simple implementation of rendezvous mechanism in the Java language. Its utilization should extend possibilities how to design Java multithreaded program architecture. The implementation needs no special JVM. It provides application programmer with only one more (library) class named Entry that provides synchronization primitive whose instance should be used for every server-side entry or a set of entries.

RefNr: 144 (Review state=accepted_lecture)

Tatiana Hodorogea, Mircea-Florin Vaida:
ALTERNATE CRYPTOGRAPHY TECHNIQUES
Presenters: Hodorogea, Tatiana
Abstract

As modern encryption algorithms are broken, the world of information security looks in new directions to protect the data it transmits. The concept of using DNA computing in the fields of cryptography has been identified as a possible technology that may bring forward a new hope for unbreakable algorithms.

RefNr: 154 (Review state=accepted_lecture)

Gergely Mezei, Tihamér Levendovszky, Hassan Charaf:
A Flexible Graphics Framework for Modeling Environments
Presenters: Mezei, Gergely
Abstract

Following the evolution of high-level languages the concept of modeling has become very natural. There exist several modeling tools that give very different solutions to the flexibility or attribute modeling. The Visual Modeling and Transformation System (VMTS) unifies the metamodeling techniques used by the common modeling tools, and the model transformation used by graph rewriting [1]. Adaptive Modeler is the graphical environment part of VMTS used for displaying the models. This paper explains the basic structure of the Adaptive Modeler focusing on the common problems related to the design of graphical frameworks. The presented solutions can be used not only in modeling, but in design of any universal graphical framework.

RefNr: 186 (Review state=accepted_lecture)

Péter Szántó, János Lazányi, Béla Fehér:
EFFICIENT MULTI-CHANNEL FIR FILTERS IN FPGA
Presenters: None.
Abstract

This paper presents an FIR filter architecture suitable for embedded FPGA based applications. With the limited resource requirements and its high performance, the architecture is suitable to implement real time, multi-channel filtering structures even in smaller FPGAs.

RefNr: 197 (Review state=accepted_lecture)

Adina Astilean, Letia Tiberiu, Mihai Hulea, Honoriu Valean:
HIERARCHICAL ROUTING SYSTEM EMBEDDED IN AN URBAN DRIVING ADVISORY SYSTEM
Presenters: None.
Abstract

The proposed paper presents a hierarchical routing system, using Ant Based Control (ABC) and Dijkstra algorithms as a part of an Urban Traffic Advisory System. The vehicle routing strategy has to ensure an optimum utilization of the capacities offered by the existing main streets, to equalize the flow on these streets during the peak hours and, combined with the control algorithms, to maintain the traffic fluidity. The mobile telephones can be used to demand and receive information about the best route optimized not only for distance, but also for the shortest drive time the current traffic conditions allow.

RefNr: 204 (Review state=accepted_lecture)

György GYÖRÖK and Margit MAKÓ:
Configuration of Universal Analogue Input-Unit by Electric Circuit Evolution
Presenters: Györök, György
Abstract

The free programmable analogue array (FPAA) circuits allow the useing of dynamically reconfigurable analogue electric circuits that are most suitable for the desired functions. This is of major importance in the case of in circuit ? in board tester or for some medical-biological application when the signal to be measured varies not only in the quantity of signal but also in quality (EEG, ECG, impedance of the skin). One method for configuring the ?self-organi-zing? input-unit could be the suggested electrical cir-cuit evolution.

RefNr: 212 (Review state=accepted_lecture)

Gabor Mirko and Gusztav Szecso:
The Conception of WEB Based Process Instrumentation Laboratory
Presenters: Szecso, Gusztav
Abstract

Introduction of the present day construction of the process instrumentation laboratory: featuring the field instrumentation, computer hardware, and networks background as well as software capability. Main functions of the laboratory-server are: webserver and database server. Characterization of the client-server operation. Measuring tasks and experiments in the laboratory: real or virtual implementation. Realizing web based flow measurement system according to ISO standard for flow equations. The process instrumentation, the decentralized planted DAS system, field bus and the first level communication protocol, process workstation as client and communication with laboratory-server. Featuring web operations: controlling the instruments of laboratory, down-loadable measurement results, user management, file upload and download management, possibilities of the development in the future.

RefNr: 231 (Review state=accepted_lecture)

Lajos Harasztosi, Lajos Harasztosi:
Computer controlled Barkhausen-noise measurements using virtual instrumentation in Labview
Presenters: None.
Abstract

Barkhausen noise measurements are widely used for non destructive testing in industrial applications. Standalone equipments would typically provide the RMS value of the noise under a selected amplitude excitation. Much greater flexibility can be achieved with a computer controlled setup. Here we describe the use of virtual instrumentation for the extension of the capabilities of a Barkhausen noise measurement apparatus.

RefNr: 234 (Review state=accepted_lecture)

László CZAP, János MÁTYÁS:
VIRTUAL SPEAKER
Presenters: None.
Abstract

Facial animation has progressed significantly over the past few years and a variety of algorithms and techniques now make it possible to create highly realistic characters.Based on the authors speechreading study and the development of 3D modelling,a Hungarian talking head has been created.Our general approach is to use both static and dynamic observations of natural speech to guide the facial modelling.Evaluation of Hungarian consonants and vowels is presented for classifying visemes -the smallest perceptible visual units of the articulation process.A three level dominance model has been introduced that takes coarticulation into account.Each articulatory feature has been grouped to dominant,flexible or uncertain classes.Analysis of the standard deviation and the trajectory of the features served the evaluation process.The acoustic speech and the articulation are linked with each other by a synchronising process.A filtering and smoothing algorithm has been developed for adaptation to the tempo of either the synthesized or natural speech.

RefNr: 235 (Review state=accepted_lecture)

ÁDÁM Tihamér, KANE Amadou, VARGA Attila K., VÁSÁRHELYI József:
OVERVIEW OF DIGITAL SIGNAL PROCESSING BASED ACTIVE NOISE CANCELLATION STRATEGIES
Presenters: None.
Abstract

Basics of Active noise cancellation using digital signal processing technology are introduced. The main cancellation strategies such us single channel broadband and narrowband feedforward, and feedback ANC systems are presented. Several algorithms for ANC systems are also shown. The problems of acoustic duct model planning and different kind of models are presented. A realized single-channel broadband model is shown.

RefNr: 236 (Review state=accepted_lecture)

J. VÁSÁRHELYI, Cs. SZABÓ, I. I. INCZE, M. IMECS,T. ÁDÁM:
FPGA Implementation of the Reconfigurable Control System for AC Drives
Presenters: None.
Abstract

The paper focuses on the implementation in Field Programmable Gate Arrays (FPGA) of vector control systems of the induction motor supplied from the tandem (hybrid) static-frequency converter. Reconfigurable control structure ensures different strategies for operating modes with non-failed and partial-failed converter. The reconfiguration process introduces perturbations in the vector controlled AC drives. The paper tries to give a synthesis of the tandem vector control structure implementation. Problems related to hardware implementation of the transition from a control structure to another are discussed.

RefNr: 239 (Review state=accepted_lecture)

János GYEVIKI, Attila CSISZÁR:
DSP BASED POSITIONING IN PRACTICE
Presenters: Gyeviki, János
Abstract

recent years considerable investigation has been devoted to the pneumatic positioning. Several methods are applied to control this positioning systems. Due to the fact that DSP owns the advantage of low cost, high speed and calculation performance, it has been widely applied. The main contribution of this paper is a design of a robust sliding mode controller implemented on DSP system. The effectiveness of the proposed control schemes is demonstrated by some simulated and experimental results.

RefNr: 243 (Review state=accepted_lecture)

Ján TURÁN, Lubos OVSENÍK, Tihamér ÁDÁM, Kane AMADOU:
OPTICALLY POWERED FIBER OPTIC SENSOR ARCHITECTURES
Presenters: None.
Abstract

In this paper optically powered fiber optics sensor system architectures are presented. The optical power budgets of this system are modelled with use of OptiPower programme package. For modelled system optical power allocation table is presented.

Posters