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    Wyświetlanie 1-4 z 4
    Tytuł:
    On one-dimensional diffusion processes with moving membranes
    Autorzy:
    Kopytko, Bohdan
    Shevchuk, Roman
    Powiązania:
    https://bibliotekanauki.pl/articles/2202027.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    diffusion processes with membrane
    two-parapeter Feller semigroup
    nonlocal boundary conditions
    method of potential theory
    procesy dyfuzyjne z membraną
    dwuparapetowa półgrupa Fellera
    nielokalny warunek brzegowy
    metoda teorii potencjału
    Opis:
    Using the method of the classical potential theory, we construct the two-parameter Feller semigroup associated, on the given interval of the real line, with the Markov proces such that it is a result of pasting together, at some point of the interval, two ordinary diffusion processes given in sub-domains of this interval. It is assumed that the position on the line of boundary points of these sub-domains depends on the time variable. In addition, some variants of the general nonlocal boundary condition of Feller-Wentzell’s type are given in these points. The resulting process can serve as a one-dimensional mathematical model of the physical phenomenon of diffusion in media with moving membranes.
    Źródło:
    Journal of Applied Mathematics and Computational Mechanics; 2022, 21, 3; 45--57
    2299-9965
    Pojawia się w:
    Journal of Applied Mathematics and Computational Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling of agricultural commodity price effects on the fiscal performance and economic growth in Ukraine
    Autorzy:
    Shevchuk, Victor
    Kopych, Roman
    Powiązania:
    https://bibliotekanauki.pl/articles/94985.pdf
    Data publikacji:
    2019
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    agricultural commodity prices
    fiscal policy
    GDP
    real exchange rate
    Ukraine
    Opis:
    This paper analyses the effects of agricultural raw materials prices upon fiscal policy indicators and gross domestic product (GDP) output in Ukraine, on the basis of the VAR/VEC model using quarterly data for the period of 2002–2018. The results indicate a positive effect of agricultural commodity prices on GDP, with both government expenditure and revenue declining in the wake of favorable commodity price developments. As expected, higher agricultural commodity prices are associated with a real exchange rate (RER) appreciation, which in turn brings about an increase in government expenditure and revenue combined with an expansionary effect on GDP. Furthermore, agricultural commodity price and RER shocks are characterized by asymmetrical effects upon output. Among other results, there are positive output effects by both government expenditures and revenues, while the reverse causality suggests a decrease in fiscal variables following an increase in GDP. Several implications for stabilization policies are discussed.
    Źródło:
    Information Systems in Management; 2019, 8, 1; 47-56
    2084-5537
    2544-1728
    Pojawia się w:
    Information Systems in Management
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    GERMAN FISCAL AUSTERITY EFFECTS ON INVESTMENTS AND EXPORTS IN THE CENTRAL AND EASTERN EUROPEAN COUNTRIES
    Autorzy:
    Shevchuk, Victor
    Kopych, Roman
    Powiązania:
    https://bibliotekanauki.pl/articles/452917.pdf
    Data publikacji:
    2017
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
    Tematy:
    fiscal spillovers
    Germany
    Central and Eastern European countries
    investments
    exports
    Opis:
    Fiscal austerity in Germany used to be blamed for a stagnant growth in the European countries. However, it seems not to be the case for the Central and Eastern European (CEE) countries. As it is established on the basis of vector error-correction model (VECM) estimates for quarterly series over the 2002-2015 period, a positive non-Keynesian spillover from the fiscal austerity in Germany to output in the CEE countries is realized mainly through an increase in investments, with the export channel being rather ambiguous across countries. Following an improvement in the German budget balance, there is a decrease in exports measured as percent of GDP in 6 out of 10 CEE countries. Depreciation of the real exchange rate (RER) is found for countries with exchange rate flexibility, while the opposite effect of RER appreciation is observed in countries with a fixed exchange rate arrangement. It is possible to argue that spillover effects of German austerity on the CEE countries are dominated by capital flows or confidence measures while foreign demand or relative price channels are rather weak.
    Źródło:
    Metody Ilościowe w Badaniach Ekonomicznych; 2017, 18, 1; 110-119
    2082-792X
    Pojawia się w:
    Metody Ilościowe w Badaniach Ekonomicznych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Asymmetry in the exchange rate pass-through to consumer prices in Eastern European countries
    Autorzy:
    Shevchuk, Viktor
    Kopych, Roman
    Powiązania:
    https://bibliotekanauki.pl/articles/31340084.pdf
    Data publikacji:
    2023-03-29
    Wydawca:
    Główny Urząd Statystyczny
    Tematy:
    exchange rate pass-through
    asymmetry
    consumer prices
    nonlinear ARDL model
    Opis:
    Using quarterly data from Q1 2002 to Q4 2021, a Nonlinear Autoregressive Distributed Lag (NARDL) model is utilised to investigate the potential asymmetry in the exchange rate pass-through (ERPT) to consumer prices in 11 Eastern European countries. The findings show that both the appreciations and depreciations of the nominal effective exchange rate (NEER) have significant long-term effects on consumer prices, with the appreciations being stronger in countries with a fixed exchange rate regime, especially the Baltic States. Incomplete long-term ERPT is observed in the majority of countries, except Estonia. Short-term ERPT is much weaker and often of an opposite direction for appreciations and depreciations. Additionally, a strong uniform long-term effect of both the money supply and crude oil prices was observed, while the short-term effects are mixed. As regards economic liberalisation, both long- and short-term effects are country-specific and of a different direction.
    Źródło:
    Przegląd Statystyczny; 2024, 70, 3; 1-17
    0033-2372
    Pojawia się w:
    Przegląd Statystyczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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