Sökning: "Edge"

Visar resultat 1 - 5 av 1018 avhandlingar innehållade ordet Edge.

  1. 1. Forest edges in boreal landscapes - factors affecting edge influence

    Författare :Ulrika Jansson; Per-Anders Esseen; Mats Nilsson; Timo Kuuluvainen; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; aerial photographs; edge contrast; edge density; edge length; fetch size; forest fragmentation; lichen growth; line intersect sampling; pendulous lichen; photo interpretation; skogskant; flygbild; kantlängd; lav; Terrestrial ecology; Terrestisk ekologi; ekologisk botanik; Ecological Botany;

    Sammanfattning : The boreal forest in Fennoscandia has been subjected to major loss and fragmentation of natural forests due to intensive forestry. This has resulted in that forest edges are now abundant and important landscape features. Edges have documented effects on the structure, function and biodiversity in forests. LÄS MER

  2. 2. Design principles for noise reduction in hydraulic piston pumps : simulation, optimisation and experimental verification

    Författare :Andreas Johansson; Kevin Edge; Linköpings universitet; []
    Nyckelord :hydraulic piston pumps; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Noise reduction in hydmulic systems has been an important research topic for several decades. In recent years, industry's interest in the area has grown dramatically. The reason is new national and international requirements and legislation governing working conditions. LÄS MER

  3. 3. Designing the Edge : An Inquiry into the Psychospatial Nature of Meaning in the Architecture of the Urban Waterfront

    Författare :Konstantinos Ioannidis; Katja Grillner; Lars-Henrik Ståhl; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Urban design and theory; spatial psychology; spatial meaning; compositional strategies; formulative logic; waterfront design and spatial organization; psychospatial reading; transformational relations; design of the edge; Architecture; Arkitektur;

    Sammanfattning : The initial goal of this effort is to develop a discussion on urban design process and thinking that acknowledges the needs of places with meaning in the design of the urban waterfront. The thesis addresses the fact that the problematic of the coastal formulation is intricate, comprising not only aspects related to the spatial organization and design of its domain but also shared properties originated by the presence and movement of the perceiving subject in the area. LÄS MER

  4. 4. Living on the edge : effectiveness of buffer strips in protecting biodiversity on boreal riparian forests

    Författare :Kristoffer Hylander; Christer Nilsson; Bengt Gunnar Jonsson; Ellen Macdonald; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; boreal forest; bryophyte; buffer strip; ecological boundary; edge effect; headwater stream; land snail; liverwort; moss; phytometer; riparian forest; substrate; terrestrial gastropod; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi; ekologisk botanik; Ecological Botany;

    Sammanfattning : The objective of this thesis is to evaluate the ecological consequences of buffer strip retention on riparian and terrestrial biodiversity. Earlier studies on forest buffer strips have evaluated their effectiveness in relation to water quality and aquatic biota. However, forests along streams are species rich habitats for many organism groups. LÄS MER

  5. 5. Bridge Edge Beams : LCCA and Structural Analysis for the Evaluation of New Concepts

    Författare :José Javier Veganzones Muñoz; Lars Pettersson; Costin Pacoste; Raid Karoumi; Håkan Sundquist; Morgan Johansson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Civil and Architectural Engineering; Byggvetenskap;

    Sammanfattning : Bridge edge beams in Sweden may involve up to 60% of the life-cyclemeasure costs incurred along the road bridge’s life span. Moreover, usercosts as means of traffic disturbances are caused. Consequently, the SwedishTransport Administration started a project to find better alternativeedge beam design proposals for the society. LÄS MER