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The application of the arima model in forecasting the passenger traffic on the example of border crossings between the subcarpathian province and Ukraine

100%

Dejniak D.

Information Systems in Management

2018

tom Vol. 7, No. 3

155--170

Accession of Poland to the European Union meant that its eastern border became the external frontier of the Community. The next step in the European integration was joining the Schengen Zone by Poland. Polish citizens may freely travel throughout the Schengen Zone and the state was obliged to tighten its eastern border. Under these circumstances conducting research on passenger traffic has become a vital issue, with particular focus on the eastern frontier. In the article an attempt is made at examining the possibility of forecasting passenger traffic on the example of border crossing points between the Subcarpathian Province and Ukraine using the ARIMA models. Confirmation of these possibilities seems to be crucial as the number of people crossing the border is characterized by high variability and sensitivity to the political situation. The study is based on the information provided by the Polish Border Guard. The conducted time series analysis is of a multi-purpose character. It may be used to support decision making processes of investment, organizational, as well as socio-political nature.

Power law and self-similarity in the distribution of national income

100%

Dejniak D.

Information Systems in Management

2014

tom Vol. 3, No. 2

113--121

Economic systems as complex systems are the source of many unconventional researches. The actual phenomena in complex systems have the non-scalability features and non-scalability does not exist without the power laws. This paper presents the occurrence of power series of rights and self-similarity in the distribution of national income in 2010, in terms of countries, the European Union and the Polish subregions. This means that one can study economic systems using tools of complex systems theory. This applies especially to the study of the mechanisms governing the system at the local level that generate global action.

THE PROBLEM OF EQUIVALENCE OF ECONOMIC MODELS WITH CONTINUOUS AND DISCRETE TIME

63%

Dejniak D. , Malawski A.

2007

tom 54

nr 1

57-71

The paper aims at specifying conditions and possibilities of application of the equivalence of continous and disctrete dynamical systems in economic models. To this purpose the concepts of a metric group and dynamical base were employed. Cosequently, the comparative analysis of economic models with continous and discrete time were elaborated. The study was reduced to the capital growth model.