Sökning: "geographic"

Visar resultat 1 - 5 av 498 avhandlingar innehållade ordet geographic.

  1. 1. Geographic Indexing and Data Management for 3D-Visualisation

    Författare :Patrik Ottoson; KTH; []
    Nyckelord :geographic visualisation; virtual reality; geographic indexing; spatial indexing; ellipsoidal quadtrees; global geographic databases; quadtrees; data fusion; data compression; wavelets; terrain models; elevation models;

    Sammanfattning : .... LÄS MER

  3. 2. Life paths through space and time: Adding the micro-level geographic context to longitudinal historical demographic research

    Författare :Finn Hedefalk; Centrum för ekonomisk demografi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Geographic micro-level factors; longitudinal historical data; geocoding; historical demography; 19th century; individual level; spatio-temporal analysis; detailed geographic data; geographic context.; property units; rural historical soceties; Geographic micro-level factors; longitudinal historical data; geocoding; historical demography; 19th century; individual level; spatio-temporal analysis; detailed geographic data; property units; geographic context;

    Sammanfattning : Historical demographic research is central to understanding past human behaviours and traits, such as fertility, mortality and migration. An essential part of historical demography is conducting longitudinal analyses at the micro-level, which involves the detailed follow-up of individuals over long time periods throughout their lives. LÄS MER

  4. 3. Context Sensitive Transformation of Geographic Information

    Författare :Ola Ahlqvist; Peter Fisher; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geographic information; geographic context; semantic models; conceptual models; interoperability; uncertainty; scale; classification; rough sets; fuzzy sets; decision support; Other earth sciences; Övrig geovetenskap;

    Sammanfattning : This research is concerned with theoretical and methodological aspects of geographic information transformation between different user contexts. In this dissertation I present theories and methodological approaches that enable a context sensititve use and reuse of geographic data in geographic information systems. LÄS MER

  5. 4. Geographic market delineation : the case of internationally traded coal

    Författare :Linda Wårell; Luleå tekniska universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Nationalekonomi;

    Sammanfattning : The purpose of this study is to test the hypothesis of the existence of a world market for the international coal industry, and to investigate whether or not the industry has experienced increased market integration over time. The study consists of an introductory part and two self- contained papers where two different methods for market delineation are applied, evaluated and compared. LÄS MER

  7. 5. Exploring Massive Volunteered Geographic Information for Geographic Knowledge Discovery

    Författare :Jia Tao; Jiang Bin; Harrie Lars; KTH; []
    Nyckelord :VGI; OSM; Geographic knowledge discovery; Zipf’s law; Urban sprawl;

    Sammanfattning : Conventionally geographic data produced and disseminated by the national mapping agencies are used for studying various urban issues. These data are not commonly available or accessible, but also are criticized for being expensive. However, this trend is changing along with the rise of Volunteered Geographic Information (VGI). LÄS MER