Studia Informatica


Volume: 2(13)
Year: 2009
Publishing: Publishing House of University of Podlasie
Scientific Editor: Andrzej Wisniewski
ISSN: 1731-2264

Contents

Barczak A., Sitkiewicz T.,
Traffic control algorithms in computer networks. Part 2 – Simulation researches of the algorithms
pp. 5-19
Abstract: This article is the continuation of the first part entitled Review of algo- rithms. In the article presented were the author's simulator of a network and the tests performed with its help. In the first part the concept and functionality of the created simulator were described. The concept emerged on the basis of an analysis of existing solutions, as well as needs the created software has to fulfill. The second part of the article depicts the testing environment, i.e. network topology and simulation parame- ters used during the research. What is more, in the aforementioned part, provided was the comparison of the research run with the use of the author's software and its inter- pretation.
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Barczak A., Zacharczuk D.,
Online forms - security, validation and functionality
pp. 21-30
Abstract: The article discusses the problem of web forms security, and how the verification of data entry.
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Barczak A., Zacharczuk D.,
Graphics editor online. Using the potential of Oracle InterMedia
pp. 31-40
Abstract: Oracle database system is a powerful tool. Article shows how to use some of its capabilities for processing multimedia data. We will show how to build web pages, how to use CSS and consequently step by step will create online image editor.
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Barczak A., Zacharczuk D.,
Configure Oracle 10g server to work with the Multimedia with through the web interface
pp. 41-48
Abstract: Article briefly discusses the general principle of web pages and describes how do they work in Oracle. It described server configuration, descriptors and tables that are necessary for the proper operation of portal using Oracle as the database of both text and multimedia data.
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Barczak A., Orzoł A.,
A project and implementation of the testing system for Intrusion Detection Systems. Part II
pp. 49-61
Abstract:
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Głowacz A.,
Diagnostics of synchronous motor based on sound recognition with application of Linear Predictive Cepstrum Coefficients and fuzzy classifier
pp. 63-72
Abstract: This document provides the concept of investigations of acoustic signals of imminent failure conditions of synchronous motor. Measurements were made by re-corder OLYMPUS WS-200S. Sound recognition software has been implemented. Algorithms of signal processing and analysis have been used. The system is based on the LPCC algorithm and fuzzy classifier with triangular membership function. Results confirm the correct operation of the system of sound recognition of synchronous mo-tor.
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Pietraszek K.,
Expert systems
pp. 73-83
Abstract: Paper presents the key issues relating to the construction of expert systems, their types and uses.
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Sojka M. , Głowacki Sz., Policewicz P.,
Methods of data transfer protection in the Internet network
pp. 85-96
Abstract: The aim of this paper was to show how data transferred by means of a data communications network may get into the wrong hands. The paper shows both the se-lected methods of attacking transmission of data sent via the Internet and the selected security methods, which may be used to protect information.
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Wisniewski A.,
Cryptosystem Based on Reversible Two-dimensional Cellular Automata
pp. 97-105
Abstract: Cellular Automata have been successfully applied to several scientific problems such as among others image processing or data encryption. One could find reversibility of dynamics is a fundamental feature of nature. While the most CA are not reversible in nature, one can find some CA with simple behavior could be reversi-ble. Reversible cellular automata (RCA) as efficient encryption and decryption de-vices was originally conceived by Kari. In this introduction paper, we analyze and develop reversible cellular automata (RCA) based on Kari’s idea and some Clarridge’s concepts.
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