OPEN Repository

Welcome to OPEN - the Repository of Open Scientific Publications, run by the Interdisciplinary Centre for Mathematical and Computational Modelling, University of Warsaw, previously operating as the CeON Repository. The Repository enables Polish researchers from all fields to openly share their articles, books, conference materials, reports, doctoral theses, and other scientific texts.

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23309 archived items

Recent Submissions

Item
The volume of wood forest resources in the European Union countries
(Aleksandras Stulginskis University, Lithuania, 2017) Turczak, Anna; West Pomeranian Business School in Szczecin
The contributions of forests to the well-being of humankind are extraordinarily vast and far-reaching. They are an important element in mitigating climate change. The aim of the paper is to determine the influence of particular factors on the diversity of the European Union countries in terms of the amount of wood forest resources compared with the country size. Two factors affecting the variable have been analysed in the paper: 1) the growing stock per 1 hectare of forest area and 2) the quotient of the forest area and the land area without inland water. Those two independent variables are directly proportional to the dependent variable, thus the higher the growing stock density and the higher the forest cover, the bigger the amount of wood forest resources of the analysed country. The causal analysis allowed to answer the question how the two factors affect the variable considered in the twenty eight countries, namely, what the direction and the strength of their influence are. The logarithmic method was used to carry out the causal analysis. The average results obtained for the entire European Union were compared with those received for each country separately and, on this basis, final conclusions were drawn. Data for 2005, 2010 and 2015 have been used for all needed calculations.
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Similarity of the European Union countries in terms of farm sizes
(Faculty of Management, Zajecar, John Naisbitt University, Belgrade, 2017-05-31) Turczak, Anna; West Pomeranian Business School in Szczecin
The purpose of the paper is to divide the European Union countries into groups of most similar distributions of farm size. As a measure of the degree of similarity of distributions D statistic was used, which is the maximum absolute value of the difference between two cumulative distribution functions. On the basis of the value of the D statistic calculated for each of the pairs of distributions the countries were divided into five relatively uniform classes. This division resulted in the creation of one single-element group, one two-elements group, one four-elements group and two ten-elements groups.