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Wyświetlanie 1-2 z 2
Tytuł:
Migration of Ukrainian citizens to Poland caused by Russia’s invasion of Ukraine in 2022
Autorzy:
Kopeć, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2195875.pdf
Data publikacji:
2022-12-23
Wydawca:
Uniwersytet Gdański. Instytut Geografii
Tematy:
migration
refugees
war in Ukraine
Polska
Opis:
As a result of the war – Russia’s invasion of Ukraine, which began on February 24, 2022 – a huge number of refugees began to flee to the countries bordering with Ukraine in the west – including mainly to Poland. This regarded women, children and the elderly, because due to the ordered mobilization of men aged 18–60–years old, they could not, with some exceptions, leave Ukraine. This is a completely new situation – no such large European nation has been forced to migrate so violently since World War II. The aim of the article is to present and analyze the migration of Ukrainian citizens to Poland caused by the Russian invasion – the course of this migration and the places where refugees stayed on the territory of Poland. Since Russia’s activities had increased anxiety already before the invasion began, the analysis also covers the earlier period. Therefore, migration has been presented in detail since 1 January 2022, while 31 July 2022 has been adopted as the end date of the analyzed data.
Źródło:
Journal of Geography, Politics and Society; 2022, 12, 4; 42-51
2084-0497
2451-2249
Pojawia się w:
Journal of Geography, Politics and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
SPH - a comparison of neighbor search methods based on constant number of neighbors and constant cut-off radius
Autorzy:
Wróblewski, P.
Kopeć, M.
Boryczko, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/1933174.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska
Tematy:
SPH
simulations
incompressible fluids
constant cut-off radius method
constant number of neighbors method
breaking dam
side gap
time effectiveness
Opis:
Two methods of neighbor search for the SPH algorithm are presented, based on a constant number of neighbors and a constant cut-off radius. First, feasible methods of comparison were analyzed. Then, the two selected methods were compared visually and computationally. Considering the use of the SPH algorithm for simulating incompressible fluids, the obtained results suggest that the method with a constant cut-off radius is better than that with a constant number of neighbors. The simulation results of both methods are practically indistinguishable, while the computational costs favor one of them.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2007, 11, 3; 273-283
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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