Wyniki wyszukiwania - BazTech

1

„Project-factor-decision” decisive factors in it projects and their impact on its success

Sitek T., Ziółkowski A.

Information Systems in Management

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2014

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Vol. 3, No. 2

145--155

EN

The aim of this article is to indicate the need for a deepening, systematizing and codifying of the theoretical and practical knowledge on IT project management, in the area of management decision-making processes. The scope of decisions made by managers is constantly on the increase. Project managers make decisions not only within the classic triangle of constraints, which consists of a schedule, a budget and the project scope, but also in reference to a number of other problems which occur during project execution. The observed need to identify and define all the factors which are present in projects results in the identification of a finite set of variables for decision-making and for the decisions themselves and, finally, in determining their mutual correlation.

2

Ocena technologii informatycznych z wykorzystaniem prototypu funkcjonalnego systemu agentowego

Czarnecki A., Orłowski C., Sitek T., Ziółkowski A.

Zarządzanie Przedsiębiorstwem

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2008

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Vol. 11, nr 1

24-35

EN

In this article we present the current state of developing the agent system for the evaluation of the information technologies (called MASIT). For the time being it is a functional prototype encompassing agents, knowledge base and ontology. Its domain is defined as the project management technologies, which are mostly focused on the information systems development. Those technologies are represented by the software applications such as IBM Rational Portfolio Manager, Rational Method Composer, Rational Unified Processes and Microsoft Project. A need for evaluating informational technologies is discussed in the initial paragraphs. The main reason stated are the information needs of a project manager when deciding what tools to use during the project life-cycle. Further, a general Structure of an agent system is specified. Managing agent, searching agent, reasoning agent and auxiliary agent are introduced along with their functionality. The main part of the article focuses on the experiments de-signed for the purpose of verifying the completeness and correctness of the developed prototype. The first experiment deals with the assessment of the basic functionalities. The second should answer the question, how the system would react on adding the knowledge on the new functionality of the project management technology. The third experiment deals with the most complex - at least so far - knowledge Structure of the system: context and should answer the questions: how to store context knowledge and how to add facts or rules about the new context. In conclusion, authors point out dilemmas one should face during the development process of the MASIT and expect also to elaborate a general model of those activities. The overall concept of this system is being developed since early 2007 and has been presented in various papers prior to this article. Therefore some issues were omitted due to the limited space. A reader can refer to the bibliography cited in the text.

3

Information technology assessment using functional prototype of an agent based system

Czarnecki A., Orłowski C., Sitek T., Ziółkowski A.

Foundations of Control and Management Sciences

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2008

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No. 9

7-28

EN

In the paper we present the progress of works related to the agent-based system serving I the purpose of information technology assessment. Currently this is a prototype including agents, the knowledge base and the ontology; the domain incorporated by the assessment - enterprise managing technologies with special attention paid to technologies directed to IT projects. In this paper, besides indication of expected functionalities special emphasis is put on verification of prototype correctness. The purpose of such verification is to have the set of experiments related to assessment of basic functionalities, next adding new functionality and new context. As this paper is part of the series describing created system (the work name: MAS_IT) and due to limited place assigned for the paper the authors wish to direct all those who are interested in this issue to the bibliography items [5, 6, 7] quoted in the paper.

4

Ocena funkcjonalna środowisk modelowania UML jako składowa wielokryterialnej oceny technologii informa-tycznych

Sitek T.

Zeszyty Naukowe Wydziału ETI Politechniki Gdańskiej. Technologie Informacyjne

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2007

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T. 13

273-280

PL

W artykule przedstawiono koncepcję systemu wieloagentowego do oceny technologii informatycznych stosowanych do wytwarzania oprogramowania. Jednym z komponentów takiego rozwiązania ma być system ekspertowy bazujący na wiedzy. Jako, że niezbędnym etapem prac będzie przygotowanie bazy wiedzy, konieczny będzie w pierwszej kolejności dobór adekwatnych parametrów. Autor prezentuje wyniki pierwszych, wstępnych badań nad środowiskami do modelowania UML opartych na wybranej grupie parametrów funkcjonalnych. Parametry te zostaną w dalszych etapach poddane weryfikacji przez ekspertów i wykorzystane do budowy baz wiedzy.

EN

In the paper author presented concept of multiagent system for evaluation of IT technologies applied in building software process. Knowledge-based expert system is going to be one of the main components of such system. Preparing knowledge base is the first step in whole project. That is why identification of key parameters must be done as the first step. Author included the results of his preliminary researches of UML modeling applications. The goal was to identify group functional parameters. These parameters will be verified by experts and used later for building knowledge base.

5

Entropia w energetyce i lotnictwie

Sitek T.

Paliwa, Oleje i Smary w Eksploatacji

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2002

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R. 11, nr 98

4-7

EN

In this paper, a comparison between entropy generation minimization method and the efficiency & lifetime maximization technique of the turbogenerator/plane is presented. The paper reviews the concept of irreversibility, entropy generation or energy destruction applied to the lubrication system and elasto hydrodynamic lubricated bearings used in the turbogenerator and fuel/hydraulic system of the plane. Our way to express the entropy law in the power engineering and aviation is that in a lubrication system of the turbogenerator and fuel/hydraulic system of the plane subsystem tend to disintegrate over time. The break, break down, break up, chemical reactions, gas and water production, rust, die decay, wear out and generally move from a state of higher organisation to one of lower organisation, from order to disorder. Moreover, the entropy generation rate vs. efficiency & lifetime behaviour of the turbogenerator/plane reveals that the efficiency & lifetime at minimum entropy generation rate and the maximum efficiency & lifetime are distinct.