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Wyszukujesz frazę "Voss, R." wg kryterium: Autor

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Feeding ecology of sprat (Sprattus sprattus L.) and sardine (Sardina pilchardus W.) larvae in the German Bight, North Sea
    Autorzy:
    Voss, R.
    Dickmann, M.
    Schmidt, J.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/47806.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    German Bight
    sprat
    coexistence
    Sprattus sprattus
    North Sea
    habitat preference
    food competition
    Sardina pilchardus
    larva
    sardine
    feeding ecology
    Opis:
    The abundance of the sardine in the North Sea suddenly increased after 1995. Since 2002, the sardine has been spawning regularly in the German Bight, and all its life stages can be found in the area. The larval feeding ecology of two small pelagic clupeiform species with very similar life histories was investigated, the particular aim being to determine signs of food overlap. The distribution and feeding of sprat and sardine larvae were investigated during late spring 2003 on two transects covering a wide range of environmental conditions in the German Bight. Larvae co-occurred at all the stations investigated. Sprat and sardine larvae shared a wide range of prey types. Gut fullness and feeding success were similar in both species; however, potential food competition is avoided to some extent by different habitat preferences.
    Źródło:
    Oceanologia; 2009, 51, 1; 117-138
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Extensions of the minimum labelling spanning tree problem
    Autorzy:
    Cerulli, R.
    Fink, A.
    Gentili, M.
    Voss, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/308930.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    network design
    metaheuristics
    spanning trees
    labelling trees
    Steiner tree problem
    Opis:
    In this paper we propose some extensions of the minimum labelling spanning tree problem. The main focus is on the minimum labelling Steiner tree problem: given a graph G with a color (label) assigned to each edge, and a subset Q of the nodes of G (basic vertices), we look for a connected subgraph of G with the minimum number of different colors covering all the basic vertices. The problem has several applications in telecommunication networks, electric networks, multimodal transportation networks, among others, where one aims to ensure connectivity by means of homogeneous connections. Numerical results for several metaheuristics to solve the problem are presented.
    Źródło:
    Journal of Telecommunications and Information Technology; 2006, 4; 39-45
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Requirements of 4G-Based Mobile Broadband on Future Transport Networks
    Autorzy:
    Fricke, M.
    Heckwolf, A.
    Herber, R.
    Nitsch, R.
    Schwarze, S.
    Voß, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/309203.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    backhauling
    LTE advanced
    mobile network de-sign
    X2 interface
    Opis:
    Long term evolution technologies provide new standards in mobile communications regarding available bandwidth. It is expected that users of one radio cell will share more than 100 Mbit/s in future. To take advantage of the full feature set of next generation mobile networks, transport network design has to face new requirements, caused by the architectural changes of LTE technologies. Especially the newly defined X2 interface impacts on the transport network requirements. X2 enables direct communication between evolved base stations (eNBs) and thus, enforces local solutions. At the same time a tendency of locating network elements at fewer, central sites to reduce operational expenditure can be observed, in particular concerning the transport layer. This leads to the question of how the direct X2 connection of eNBs on the logical layer can be accommodated with a general centralization of transport networks. Our considerations show that for LTE, a centralized transport network is able to realize the local meshing between eNBs. However, for LTE Advanced, the standards currently discussed by the 3GPP initiative could lead to enhanced requirements on the X2 interface latency. Consequently, the implications for the network architecture have to be analyzed in more detail.
    Źródło:
    Journal of Telecommunications and Information Technology; 2012, 2; 21-28
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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