Search for dissertations about: "VGI"

Found 5 swedish dissertations containing the word VGI.

  2. 1. Exploring Massive Volunteered Geographic Information for Geographic Knowledge Discovery

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

    Abstract : 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). READ MORE

  4. 2. Geospatial Knowledge Discovery using Volunteered Geographic Information : a Complex System Perspective

    Author : Tao Jia; Bin Jiang; Yifang Ban; Itzhak Benenson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; knowledge discovery; urban systems; complex system; VGI; OSM; GPS tracking dataset; scaling; heavy-tailed distribution detection; urban sprawl; Zipf’s law; human activity mobility patterns; agent-based modeling; complex network.;

    Abstract : The continuous progression of urbanization has resulted in an increasing number of people living in cities or towns. In parallel, advancements in technologies, such as the Internet, telecommunications, and transportation, have allowed for better connectivity among people. READ MORE

  5. 3. The Principle of Scaling of Geographic Space and its Application in Urban Studies

    Author : Xintao Liu; Bin Jiang; Yifang Ban; Meng Liqiu; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; geographic space; scaling; GIScience; VGI; OSM; heavy-tailed distribution; the head tail division rule; space syntax; nature street; urban sprawl; floating car data; hierarchical spatial structure;

    Abstract : Geographic space is the large-scale and continuous space that encircles the earth and in which human activities occur. The study of geographic space has drawn attention in many different fields and has been applied in a variety of studies, including those on cognition, urban planning and navigation systems. READ MORE

  6. 4. Modeling and improving Spatial Data Infrastructure (SDI)

    Author : Ehsan Abdolmajidi; Institutionen för naturgeografi och ekosystemvetenskap; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Spatial Data Infrastructure; System Dynamics; Fuzzy Logic; Data integration; Pattern detection; Resource Description Framework RDF ; Ontology;

    Abstract : Spatial Data Infrastructure (SDI) development is widely known to be a challenging process owing to its complex and dynamic nature. Although great effort has been made to conceptually explain the complexity and dynamics of SDIs, few studies thus far have actually modeled these complexities. READ MORE

  7. 5. Maxillofacial cone beam computed tomography (CBCT) : aspetcs on optimisation

    Author : Ayman Al-Okshi; Malmö högskola; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; CBCT; OPTIMISATION; DOSAGE;

    Abstract : Inom odontologisk såväl som inom medicinsk radiologi sker en snabb utveckling av nya tekniker. Nya metoder för att kunna diagnosticera och följa sjukdomsförlopp över tid introduceras. Cone-Beam Computed Tomography (CBCT) är en sådan ny teknik, som introducerades inom odontologin under sent 1990-tal. READ MORE