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    Wyświetlanie 1-6 z 6
    Tytuł:
    Analiza stopy bezrobocia w Polsce z wykorzystaniem przestrzennego modelu MESS
    Autorzy:
    Müller-Frączek, Iwona
    Pietrzak, Michał Bernard
    Powiązania:
    https://bibliotekanauki.pl/articles/658029.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Opis:
    J. P. LeSage and R. K. Pace have proposed Matrix Exponential Model (MESS) in 2007. A spatial autoregressive process, in the conventional specification, has been replaced by a matrix exponential transformation connected with a spatial weight matrix. This alternative has a computa- tional advantage. The article will present an analysis of the unemployment rate in Poland in 2007 by means of MESS. Spatial approach to modeling of this process will be justified by previous research of the spatial autocorrelation. A connection between the unemployment and other economic processes will be examined in order to construct a hypothetical model. Finally, MESS and regression model will be compared. The confrontation of the results will show that spatial dependence should be taken into consideration in the analysis of economic proc- esses.
    Źródło:
    Acta Universitatis Lodziensis. Folia Oeconomica; 2011, 253
    0208-6018
    2353-7663
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Oeconomica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza czasu przejazdu do centrum miasta z wykorzystaniem modelu przestrzennego SAR
    Autorzy:
    Pietrzak, Michał Bernard
    Rutkowska, Emilia Elżbieta
    Powiązania:
    https://bibliotekanauki.pl/articles/658047.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Opis:
    This article assumes the existence of a theoretical city, called Warsaw, divided into districts, where one analyze a situation of time needed to travel to downtown with the use of urban roads classified, due to their characteristics, as public goods. The authors pose the hypothesis that while studying traveling time using the public good in equilibrium there exists the external effect which results in the effect of smoothing the traveling time to the center between the neighboring districts. For confirmation of this hypothesis, the spatial model SAR that takes into account the spatial dependence is going to be used.
    Źródło:
    Acta Universitatis Lodziensis. Folia Oeconomica; 2011, 253
    0208-6018
    2353-7663
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Oeconomica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie modelu MESS w przestrzenno-czasowej analizie stopy bezrobocia w Polsce
    Application of the MESS Model in Space-Time Analysis of the Unemployment Rate in Poland
    Autorzy:
    Müller-Frączek, Iwona
    Pietrzak, Michał Bernard
    Powiązania:
    https://bibliotekanauki.pl/articles/904959.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Opis:
    The purpose of the article was a space-time analysis of the unemployment rate in polish poviats. In the research we use a model in which spatial dependence is represented in the exponential form, based on the neighborhood matrix. This model, called the Matrix Exponential model, was proposed by J.P. LeSage and R.K. Pace in 2007. It is characterized by simplicity of estimation, which can compete with other known approaches. The presented analysis was a continuation of previous purely spatial studies (Müller-Frączek, Pietrzak 2011b). This article consists of three parts. Each of them provides an analysis of the unemployment rate registered in Poland at the end of the years 2004-2009. In the first part the unemployment rate was analyzed for each year separately. Almost linear changes of parameters of the space models, allowed us to build a space-time matrix exponential model MESS. It was described in the second part of the article. In the last part the results, obtained using the MESS model, were confronted with an approach based on spacetime autoregressive model.
    Źródło:
    Acta Universitatis Lodziensis. Folia Oeconomica; 2013, 293
    0208-6018
    2353-7663
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Oeconomica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza migracji wewnętrznych w Polsce z wykorzystaniem modelu grawitacji
    Analysis of Internal Migration in Poland with Application of the Gravity Model
    Autorzy:
    Pietrzak, Michał Bernard
    Wilk, Justyna
    Matusik, Stanisław
    Powiązania:
    https://bibliotekanauki.pl/articles/904962.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Opis:
    The subject of this paper is to consider internal migration phenomena in Poland in the years 2008-2011 with application of the gravity model. The period of time covers world financial and economic crisis which hinders economic growth in Poland and impedes internal migration flows. In the investigation 16 Polish voivodships were considered. The values of migration flows (for a permanent residence), related to inter- and intraregional flows constitute a dependent variable. As explanatory variables GDP per capita and registered unemployment rate, for which separate gravity models were specified, including also geographical distance, were selected. Estimation results provide an evaluation of an intensity and direction influence of explanatory variables on migration phenomena. Voivodships about relatively good economic situation are the centres of population inflow (particularly from neighbouring regions) and their net migration is positive. Territorial mobility of population of poor regions is very low.
    Źródło:
    Acta Universitatis Lodziensis. Folia Oeconomica; 2013, 293
    0208-6018
    2353-7663
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Oeconomica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelowanie zależności między ekonomicznymi procesami przestrzennymi a poziom agregacji danych
    Autorzy:
    Szulc, Elżbieta
    Müller-Frączek, Iwona
    Pietrzak, Michał Bernard
    Powiązania:
    https://bibliotekanauki.pl/articles/658042.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Opis:
    Statistic and econometric analyses of spatial phenomena use the data of different levels of spatial aggregation. It has particular consequences for the possibilities of discovering different properties and structures of the spatial processes. These properties are the basis for the proper specification of the spatial models of the dependence between the processes. In the paper it is discussed how the spatial aggregation affects the change of the properties and the structures of the spatial processes. In particular the differences as regards the character and the strength of the spatial aggregation influence on the separate components of the processes are shown. The main part of the paper is the discussion on the data aggregation influence on the model- ling of the dependence between the spatial processes. A special attention is paid to the econometric modelling of the phenomena observed at different levels of the data aggregation with the presence of the spatial autocorrelation. The important result of the discussion is to point at the problem of the “naive” spatial models interpretation. The considerations are based on the generated data and they are illustrated with an empirical example.
    Źródło:
    Acta Universitatis Lodziensis. Folia Oeconomica; 2011, 253
    0208-6018
    2353-7663
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Oeconomica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza procesu konwergencji wydatków na żywność gospodarstw domowych w Polsce
    Analysis of Convergence Process of Polish Household Food Expenditures
    Autorzy:
    Müller-Frączek, Iwona
    Muszyńska, Joanna
    Pietrzak, Michał Bernard
    Powiązania:
    https://bibliotekanauki.pl/articles/904956.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Opis:
    This paper presents an analysis of expenditure on food of households in Poland in the years 1999–2010. Since their level and dynamics can be used as a measure of well-being of society this process was used to examine internal social convergence of regions, in this case the voivodships. The aim of this paper was to validate the hypothesis about the process for β-convergence in the share of household expenditure on food in total expenditures. The research has allowed the identification of long-term tendency of the level of expenditure on food in Polish households. Based on the analysis of conditional convergence, the article indicates household disposable income as a strong determinant of social convergence process in Poland. For the verification of hypotheses dynamic panel models were applied. The analysis was based on data from the CSO website. All calculations were performed in the Gretl.
    Źródło:
    Acta Universitatis Lodziensis. Folia Oeconomica; 2013, 293
    0208-6018
    2353-7663
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Oeconomica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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