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Zależności długookresowe stóp zwrotu cen kontraktów terminowych na produkty rolne

100%
Malik G.
Zeszyty Naukowe Wyższej Szkoły Ekonomii i Informatyki w Krakowie
|
2016
|
issue 12
175-190
PL
Celem artykułu jest zaprezentowanie statystycznych własności rozkładu cen produktów rolnych notowanych na giełdzie towarowej w Chicago, w szczególności zaś kukurydzy, soi i pszenicy oraz sprawdzenie efektu istnienia długiej pamięci w badanych szeregach czasowych. Aby osiągnąć zamierzony cel przedstawione zostały statystyki opisowe i wyniki testów normalności stóp zwrotu badanych produktów rolnych oraz ich ilustracje graficzne. W celu zdiagnozowania efektu długiej pamięci w badaniach empirycznych zastosowany został test GPH, z kolei wnioskowanie zostało oparte na podstawie estymacji semiparametrycznego parametru integracji ułamkowej d, jako współczynnika z równania regresji, w którym zmienną objaśniającą jest logarytm periodogramu.(abstrakt oryginalny)
EN
The purpose for this article is to present the statistical properties of the distribution of the prices for agricultural products traded on a commodity exchange in Chicago, especially corn, soybeans and wheat, and to examine the impact of the existence of long memory in the studied time series. To achieve the goal there have been presented descriptive statistics and the results of tests of normality for return rates of the examined agricultural products and their graphic illustrations. In order to diagnose a long memory effect in empirical research there has been applied a GPH test. Deducting then has been based on the estimation of d - semiparametric parameter for fractional integration, as the rate of the regression equation in which for the independent variable function periodogram logarithm is applied.(original abstract)
2
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Zmiany udziału pracy w dochodzie narodowym a nierówności społeczne na przykładzie państw Grupy Wyszehradzkiej

100%
Gawrycka M., Szymczak A.
Studia Ekonomiczne
|
2013
|
vol. 145
103-111
EN
Globalization determines development of characteristics trends in global economy, politics, social life and coulture, regardless of the stage of advancement or physical geography. The prevailing liberalization of trade, currency and capital markets, multinational production, and technological advancement constitutes its driving force. It has caused Polish, transforming economy to subject to globalization effects. These influences can be both positive and negative. As a result of the spreading globalization, labour share in the national income has de-creased, suggesting that the meaning of work has weakened. On the other hand, as reported by the national labour market, globalization has brought unemployment, discrepancies in wage ranges between qualified and unqualified employees, and growth of the group of "working poor". The purpose of this article is to investigate the influence that change of labour share in the national income has on the level of wage discrepancies in Visegrad Group in years 1993-2011. The analysis covers review of literature on globalization, considering particularly labour share in the national income. It bases also on data from OECD and World Bank, to which induction as well as descriptive statistics were applied.
3
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Zróżnicowanie gospodarek pod względem poziomu wdrożenia nowoczesnych technologii. Analiza empiryczna

100%
Lechman E.
Studia Ekonomiczne
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2013
|
vol. 139
153-162
EN
The main aim of the paper is to learn about the cross national differences in ICTs adoption and application. The author analyzes the inter countries inequalities in terms of 5, arbitrary set ICTs indicators, which are: fixed telephone lines, cellular subscribers, fixed Internet subscribers, Internet users and fixed broadband subscribers11. The main analytical tools applied are: basic descriptive statistical analysis and Kernel densities functions. The empirical evidence covers the period 2000-2010 and the country set consists of 145 worldwide economies.
4
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Udział pracy w dochodzie narodowym w Polsce z uwzględnieniem województw

80%
Gawrycka M., Szymczak A.
Studia Ekonomiczne
|
2013
|
vol. 145
187-196
EN
Alterations of labour share in the national income are thought to have multiple, different reasons. Hence, it resulting diversification of tendencies of labour share can be verified against equally diverse, economic scales: global, national and regional. Consequently, the purpose of this article is to analyze this diversification of labour share in the national income, recorded in particular Polish provinces. The study includes global literature on labour share review as well as statistical data analysis of this factor. The investigation refers to two years, 2000 and 2009. Data gathered was approached using induction and descriptive statistics.
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