Studia Informatica


Volume: 1(12)
Year: 2009
Publishing: Publishing House of University of Podlasie
Scientific Editor: Andrzej Wisniewski
ISSN: 1731-2264

Contents

Barczak A., Orzoł A.,
A project and implementation of the testing system for Intrusion Detection Systems. Part 1
pp. 5-13
Abstract: In the first part of the article there will be described basic terms and problems concerning IDS discipline and penetration tests. The second part of the article will show the model of the testing system of the Intrusion Detection Systems.
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Barczak A., Zacharczuk D., Jastrzębowski S.,
Comparative analysis of database access technology
pp. 15-31
Abstract: The paper’s subject is comparative analysis of database access technologies. It presents the evolution of the discussed technologies, which are divided into the following categories: single-platform and multi-platform technologies. Sample programs showing the use of programming interfaces, used for initiating and establishing connections with databases and performing simple operations on them. A database diagram, which was used for measuring efficiency of selected technologies as well as testing plan and concept, system and hardware parameters, tested queries and the program skeleton that was used for measuring the efficiency of selected technologies, were presented. The results were grouped according to 4 query types and 3 operating systems. A description was attached to each graph. Conclusions were provided for query tests for each of the operating systems. Finally, the most efficient technologies were discussed, potential causes of increase or decrease in efficiency were presented, and the results were summarized.
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Chojnacki A., Borzęcka H.,
Assessment of economic activity of the company on the base of fuzzy inference rules
pp. 33-45
Abstract: The article presents the assessment of companies efficiency, the idea based on the fuzzy set theory and fuzzy logic. Relevant financial measures are selected by experts and auditors. Variables of the proposed fuzzy model are expressed as linguistic variables and their correlations are defined by If-Then fuzzy rules of conclusion. </br> The theoretical modeling is then followed by numerical examples. There is further extension of model toward assessment and comparison for enterprises of different size and various business branches.
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Kłopotek M.,
Approaches to “Cold-Start” in recommender systems
pp. 47-54
Abstract: The paper explores the possibilities of handling cold start problems for recommenders associated with document-map based search engines.
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Sojka M. , Głowacki Sz.,
Wi-Fi networks in small and medium-sized businesses (SMB)
pp. 55-65
Abstract: Wi-Fi is quite a new technology on the market. This paper’s aim was to prove the justifiability and profitability of this technology use in the small and medium-sized businesses sector. Advantages and disadvantages of this kind of network were also shown. An issue connected with data and configuration elements security was also raised. Other wireless technologies were also presented.
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Sysiak W., Trajer J., Janaszek M.,
Supporting investment decisions using data mining methods
pp. 67-78
Abstract: This paper presents an application of k-means clustering in preliminary data analysis which preceded the choice of input variables for the system supporting the decision about stock purchase or sale on capital markets. The model forecasting share prices issued by companies in the food-processing sector quoted at the Warsaw Stock Exchange was created in STATISTICA 7.1. It was based on neural modeling and allowed for the assessment of changes direction in securities values (increase, decrease) and generates the quantitative forecast of their future price
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