II KONFERENCJA INFORMATYKA W EKONOMII
Katedra Informatyki i Inżynierii Wiedzy zorganizowała 27 maja 2004 w budynku WSZiA (sala 02) II. Konferencję Naukową Informatyka w Ekonomii.
Sukces jaki odniosła I Konferencja zachęcił organizatorów do przekształcenia jej w konferencję cykliczną poświęconą różnym aspektom teorii i zastosowań informatyki w problemach gospodarczych. Myśląc o aplikacji informatyki w ekonomii organizatorzy konferencji staneli przed trudnym zadaniem selekcji tematyki i budowy podziałów pomiędzy zagadnieniami ekonomii klasycznej, ekonometrii, teorii wspomagania, kierowania i zarządzania procesami gospodarczymi w sferze przepływu pieniądza i produkcji. Tak szeroki materiał, wystarczający na kilka cykli dyskusyjnych, musiał być przez organizatorów ukierunkowany.
Obrady II Konferencji Informatyka w Ekonomii odbyły się pod hasłem:
WSPÓŁCZESNE ŚRODKI I METODY INFORMATYCZNE W EKONOMII
W konsekwencji przyjęcia tego hasła zaplanowano następujące sesje tematyczne:
- Metody decyzyjne wspomagające rozwój gospodarki
- Systemy informatyczne w ekonomii
- Informatyczne narzędzia w ekonometrii
Komitet Naukowy Konferencji
- Jan Andreasik WSZiA Zamość
- Jerzy Bajorek PRz. Rzeszów
- Andrzej Całczyński PR Radom
- Jan Gruszecki WSZiA Zamość
- Wacław Grzybowski WSZiA Zamość
- Zdzisław Hippe WSIiZ Rzeszów
- Wiesław A. Kamiński WSZiA Zamość
- Edward Kącki WSzI Łódź
- Stanisław Paszczyński WSZiA Zamość
- Jerzy Świątek PWr Wrocław
- Łukasz Węsierski WSZiA Zamość
- Michał Woźniak AE Kraków
Galeria zdjęć z konferencji:
SELECTION OF AN ERP-CLASS SYSTEM
AND ORGANIZATION STRATEGY EXEMPLIFIED BY AN UNIVERSITY
This paper discusses the problem of selection of an ERP-class system for a university. The methods of selection of IT systems, based on multiple criteria, are classified. The paper gives some examples of hierarchical sets of criteria for a decision analysis in Expert Choice and Logical Decisions systems.
INFORMATION SYSTEM MODELLING USING GRAPH TRANSFORMATION RULES
Connected with the human activity with indispensable component of every organization the information management system is, which it serves the processing the, throw open, of stockpiling as well as filing of essential information for activity of only organization or her users. Well-chosen computer system is for data system technical support suitably. It is the at present most widespread paradigm the object-oriented programming as well as connected from him methodology of object-oriented modelling. Among languages object-oriented modeling standard became the Unified Modeling Language (UML). It is the language easy to understanding and possible to accepting by all realizing project users. It to specification of modeled system uses notation graphic (diagrammatic), which it is easier to surrounding by folks. To can specify understanding project the language was defined the OCL additionally (Object Constraints Language) in aim the unambiguous description of invariants of system. However UML despite name is more semi-formal notation than well defined language in formal sense. Serious weakness UML is the lack of operating semantics class diagrams as well as interpretation of action in diagrams. The use of rules of production to diagrams the UML can strengthen the strength of expression of language the UML as well as contribute to enlargement of his formal correctness as well as his cohesion. In this paper we propose the use of theory the graph grammars as well as the graph transformation to modeling of fragment of banking system. Modeling hugs both static aspect as well as dynamic system in integrated way, which is peaceable with paradigm of object-orientedness. Generally saying the graph grammar it consists from initial graph as well as the complete gathering of rules of production. Having the initial graph, which can represent the state of modeled system in given moment as well as we will receive the gathering of rules of production graph the new state of system (represented as a graph). Graph grammars permit in visual way and intuitively comprehensible to describe complicated structure of a system (represented as graph). Static descriptions expressed with the help of graph step out in databases, operate system as well as folded computer applications. However to possibly the mechanism of transformation of graphs used to representing in sense of simulation of modeled events the dynamic processes of system in system.
SIMULATION GAMES IN TEACHING ECONOMICS
This article presents a general description of simulation games, which are used more and more often by Polish higher education institutions in the teaching process. Three basic stages of a~management game are described: introduction, competition and conclusion. The article also includes some comments that can serve as guidelines for teachers using business simulators with their students. The research part of the article defines the efficiency of simulation games compared to traditional academic teaching methods and also compares indirect simulators with those that use IT tools directly.
PRESUMPTIONS FOR MANAGEMENT SYSTEM OF PRODUCTION PROCESS
IN TERMS OF LIMITED EVALUATION POSSIBILITY OF MARKET DEMAND
Controlling of amount of set articles being fabricate and organization production process in the case of a limited demand market possibility assessment, often take place in an intuitive manner with the certain dose of subjective assessments and the common knowledge of a~positive influence of a~greater amount of items in the production series. This attitude may lead to an increase of stock and production in process as well as case temporary shortages in some goods especially in case of items with considerably long time of production and sale. In this paper a proposal of defining optimal quantity production series with an assumpted limits due to seasonal sales, possibility of demand assessment and having taken into consideration real production possibilities and commercial unit cost conditionals have been made. As a~criterion a greatness of the series selection minimalisation of total production and sale cost has been taken.
UTILIZATION OF PROGRAMMES WINQSB AND EXCEL'S SOLVER
TO ANALYZE AND SOLVING OPTIMIZATION TASKS
Lesław Gołębiowski, Edyta Gąsior
Solving optimization tasks is often complicated process and usually time-consuming. Using computer programmes in this purpose facilitates and accelerates solving problems connected with making optimal decisions in different situations. Report does not represent the detailed theoretical reason of particular methods and pattern facilitating realization tasks, which can appear on individual stages solving decision process. This report turns special attention on practical aspects of utilization modern computer programmers in concrete decision situations and solving optimization tasks.
CONVERGENCE EVALUATION OF MULTISTAGE ECONOMY PROCESSES
Human behaviours both conscious and unconscious, introduce in discrete processes, described by equation x(k+1)=Ax(k)+Bu(k) disturbance e(k), which noise characteristic is known. Method of discrete process convergence evaluation is presented in the paper. The method is based on the continuity modulus of the function. Two versions of the method are distinguished for the universum form of the process equation. Usage of the rough set theory makes possible to utilize resulting algorithms in on-line data processing because of simplicity.
DYNAMIC SYSTEM FOR EMPLOYEE PLACEMENT IN LARGE COMPANIES
Edward Kącki, Wanda Gryglewicz-Kacerka, Janusz Kacerka
The paper gives characteristics of fundamental problems and conditions of optimal employee placement in large companies. Described are rules of continuous change in work placement based on current employee abilities and company state and activity profile. For this purpose artificial neural networks (ANN) and test sets are used. Numerous factors substantial for operation of a dynamic system performing a rational series of changes in employee placement configuration are analysed and classified. Thus obtained factors are used for creation of training sets for ANN's. As a result a model of dynamic employee placement in a company is created and its usability is discussed. Conclusions regarding the specific model and the problem described in general are presented.
THE COMPUTER ADMINISTRATION OF BEDS IN HOSPITAL DEPARTMENTS
Edward Kącki, Joanna Stempczyńska
The aim of the paper is to show the basic problems of computer administration of beds in hospital departments. The paper presents the computer system SERVBED designed by authors devoted to administration of hospital beds. The system has a module structure and it combined following four modules: module of state registration, module of active information, module of prognosis and module of statistical investigations. The paper described construction and activity of the modules and next it discuss usefulness of the system
ONE-STEP-TO-FUTURE STATISTICAL PREDICTION
FOR ONE-DIMENSIONAL TIME SERIES USING ARTIFICIAL NEURAL NETWORKS
Krzysztof Sokalski, Jacek S. Kasperczyk, Jacek Kasperczyk
This paper describes a new statistical method that generates a set of one-step predictions for a one-dimensional time series using a multilayered neural network. Based on the obtained set of predictions and a frequency table, one can calculate a probability distribution for the prediction. Such a generation of the prediction set values consists in an initial filtration by means of a neural filter where the time series, smoothed by a Hellwig method, become single-element learning sets. Different values of the predictions can be obtained by applying different lengths of the Hellwig segments and multiple repetitions of the initial filtration of the given time series. In the result, the probability distribution can be obtained for the elaborated forecast.
PROGNOSTIC PROPERTIES OF THE INDEX
OF ECONOMIC SENTIMENT OF THE LUBLIN REGION
In the paper the possibilities of the utilization of the index of economic sentiment, which is calculated quarterly from the middle of 2001, to the short-term prediction is shown. The prognostic index of economic sentiment gives not only the qualitative information about the perception of future economic processes by entrepreneurs and citizens of the region, but can be the tool of forecasting quantitative macroeconomic indexes.
INFORMATION TECHNOLOGY IN BANKING
Rodzisław Bełz, Barbara Kuczmowska
The changes that are taking place in our environment confirm the fact that we are now in a~temporary period between the traditional industrial economy and the digital one, based mainly on all kinds of information. These changes are only possible thanks to the technological advance in the IT domain, and have a tremendous impact on the way of banking operation. This paper is an attempt of synthesis of the new opportunities and threats resulting from computerizing banks.
OPEN SOURCE AS ALTERNATIVE POSSIBILITIES
OF DEVELOPMENT OF THE ENTERPRISE INFORMATION SYSTEM
Open Source Software has now emerged as a credible alternative model for the development of software for enterprises, particularly at the level of IT infrastructure. For an enterprise, Open Source represents a complementary approach to the traditional proprietary model of the software industry, offering greater flexibility and vendor independence. Given the recognized advantages of Open Source, but also the possible risks, the involvement of senior managers is recommended and this dossier is intended to contribute to their reflection in this domain. The OSS community is starting to attack integrated enterprise management suites and CRM tools, with projects such as Open ERP and Free ERP. The article is specific study of chance leaning on experience of author.
MODELING ORGANISATION AND ITS PROCESSES WITH EXTENDED UML
Ludmiła Rekuć, Witold Rekuć
The modeling of business processes understood as their specification in a given language and the application of business process models in enterprises are shortly characterized. The importance of business process modeling for software engineering and the idea of Model Driven Architecture (MDA) are presented. The problem of requirements formulation for the CIM model proposed in the MDA is stressed. The application of the extended UML - the UML profile for EDOC - to the CIM specification of public city transport management process during traffic reorganization is presented.
USING INDUSTRIALSQL SERVER IN MANUFACTURING PROCESS MANAGEMENT
Marcin Bednarek, Krzysztof Świder
The relational database management systems (RDBMS) appeared to be most popular tool to store and process data at various levels of enterprise management. They allow to design databases and data warehouses collecting huge amounts of operational data as well as data for analysis. Despite evident advantages of conventional databases supported also by their suppliers' reputation, they have significant limitations to be used for gathering and management of data coming directly from industrial processes. The paper concerns the industrial data acquisition systems designated to collect data produced by technological processes. The Wonderware IndustrialSQL Server based on MS SQL Server was introduced as an example of commercially available software for industrial data acquisition. In particular we focused on case studies of its practical applications.
DESCRIPTION METHODS AND QUERY LANGUAGES FOR SEMISTRUCTURED DATA
The notion ,,semistructured" refers to such a technique of data accumulation, which enables to integrate information coming from different, often heterogeneous resources. The important features of the semistructured model, along with examples of applications, both from Web as those from systems with irregular data models, were presented in the paper. The typical applications are e.g.: scientific databases, electronic libraries, on-line documentation and\linebreak e-commerce. Especially important from practical point of view is the emergence of XML, which seems to be the most promising implementation of semistructured data. Because of the small space, some crucial issues as data modelling and query languages design have been included in very concise form.
USING INFORMATION SYSTEMS IN THE GROUNDWORK PROCESS PRECEDING
THE MANUFACTURE OF A NEW PRODUCT
Long gone is the sight of a designer bent over his drawing board. Designers' studios are now beginning to resemble more and more those of computer programmers' with all the hardware and peripherals becoming familiar components of the scene. It does not, however, follow either from trend revolution in the designing field or a willingness to copy the methods of highly developed countries. Computerisation is a natural consequence of growing market opportunities, where flexibility of a company is a must as well as its efficiency, high quality of a product and time. It is now impossible to imagine a business failing to recognize the benefits of using computer technology in a broad sense (cosisting of hardware, specialised software and expanded network systems). The scope of these elements used by a company on the one hand sets frontiers for its activity and expansion on the market and on the other - becomes a driving force for it in terms of technological progress. The quantity and quality of the computer equipment that a company uses often affects its competitiveness on the market. The following paper deals with the complexity of the issues connected with computerised designing using PDM/ERP information systems. The extent to which those systems are used, the benefits following from them and the similarities as well as differences between them have been comprehensively covered here.
COMPARISON OF SELECTED SOFTWARE
FOR COMPUTER-AIDED MANAGEMENT OF FIXED ASSETS
Maria Wasilewicz, Wojciech Sibilski
Functioning of an enterprise and its financial results depend, among other factors, on proper management of its fixed (long-lived) assets. Basic components of fixed assets are tangible assets such as land, buildings, machines and devices, vehicles etc. In the management of these assets there is a need for possessing and processing many data describing assets. For this purpose computer software is used. In the paper the main functions performed by selected software systems have been described. Possible applications of these systems have been compared in the form of table that shows functions supported by various systems. The presented material may be helpful in selection of software adequate to the needs of specific enterprise.
ON SOME POSSIBLE APPLICATIONS OF MULTIVALUED LOGICS
Łukasz N. Węsierski
The first part reports principal assumptions of multivalued and fuzzy logics, which can be applied to a more precise description of real phenomena (including economic ones) by use of the natural language. in the following, a generalized rule of concluding by means of assertation by assertion (modus ponendo ponens) is presented and demonstrated on simple examples. These principles of concluding can be applied to building of a base of knowledge in expert rule systems, used e.g. in the real estate market.