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Wyszukujesz frazę "spatial boundary" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Structure, function and cross-scale properties of landscape boundaries – a case study of the Płock area
Autorzy:
Kulczyk, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/2036146.pdf
Data publikacji:
2013-12-30
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Landscape
boundary
structural features
functional features
spatial hierarchy
Opis:
The paper describes features of landscape boundaries in the lowland landscape of Poland and verifies their cross-scale properties. The diversity of lithology, morphometry and land use was taken into account by delimitation of the boundaries. A scale of 1:50 000 was set as the basis. Three structural features (length, contrast and sinuosity) and two functional features (permeability and stability) were examined. The boundaries within the research area are typically of average length, low sinuosity, high permeability and low stability. A high correspondence between the diversity of abiotic components and land use is observed, resulting in a large number of high-contrast boundaries. However, this feature does not necessarily mean that these patterns are cross scale and can be applied at a higher level of landscape hierarchy. A geochemical/typological and regional order has been explored to describe properties of landscape boundaries for different spatial scales. Only the first of the listed orders corresponds to diversification of boundary features.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2013, 17, 4; 21-27
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of single and X-wire measurements of streamwise velocity fluctuations in turbulent boundary layer
Autorzy:
Dróżdż, A.
Elsner, W.
Powiązania:
https://bibliotekanauki.pl/articles/281655.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
turbulent boundary layer
energy spectra
hot-wire spatial resolution
Opis:
The paper discusses the problem of measuring velocity fluctuations of a turbulent boundary layer using single and X-wire probes. It seems that the difference between the streamwise fluctuating component of these two probes results not only from spatial resolution, but also from influence of the wall-normal fluctuating component, which is usually not considered. It was shown that the vector summing these two components obtained from X-wire probe gives the shape of fluctuation distribution obtained from a single-wire probe. It implies that the underestimation of the near-wall peak of streamwise fluctuating component in X-wire measurements results from disregarded wall-normal fluctuations, which is obviously taken in the case of a single-wire probe. Moreover, it was shown that the criteria for wire length i.e. l+ ≤ 20 could not be sufficient to properly estimate the streamwise and wall-normal fluctuations.
Źródło:
Journal of Theoretical and Applied Mechanics; 2014, 52, 2; 499-505
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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