Advanced search

Showing result 1 - 5 of 12 swedish dissertations matching the above criteria.

  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. Osteotropic cytokines : expression in human gingival fibroblasts and effects on bone

    Author : Py Palmqvist; Andersson Göran; Umeå universitet; []
    Keywords : osteoblasts; osteoclasts; fibroblasts; cytokines; IL-6; LIF; OSM; IL-4; IL-3; bone resorption; odontologi; Odontology;

    Abstract : Bone metabolism is regulated by endocrine and paracrine signalling molecules influencing bone cells in the continuously remodelling bone tissue. These molecules include a variety of osteotropic stimulatory and inhibitory cytokines. READ MORE

  5. 3. 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

  6. 4. 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

  7. 5. Gene expression studies in human astrocytoma, with emphasis on oncostatin M induced effects

    Author : Annika Krona; Göteborgs universitet; []
    Keywords : Brain tumors; astrocytoma; glioblastoma multiforme; oncostatin M OSM ; STAT; microarray;

    Abstract : Brain tumors comprise about one percent of all cancers and astrocytoma is the most common primary brain malignancy. According to the World Health Organization system, the astrocytomas are divided into four grades according to degree of malignancy. Grade I, pilocytic astrocytoma (PA), is the least malignant form and most often affects children. READ MORE