Search for dissertations about: "geographic information system"

Showing result 6 - 10 of 67 swedish dissertations containing the words geographic information system.

  2. 6. Modelling Epidemic Influenza : A Novel Approach

    Author : Wah-Sui Almberg; Magnus Boman; Mats Danielsson; Paavo Pylkkänen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Computer and Systems Sciences; data- och systemvetenskap;

    Abstract : Modellering av dynamiska förlopp i socio-biologiska komplexa system är långt ifrån trivialt. Behovet av fördjupad förståelse av sådana förlopp är många gånger stort. Vi har presenterat ett oortodoxt förslag på hur spridning av influensa i mänsklig population kan beskrivas och simuleras. READ MORE

  4. 7. Making space for resilient urban well-being

    Author : Karl Samuelsson; Stephan Barthel; S. Anders Brandt; Dagmar Haase; Högskolan i Gävle; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; subjective well-being; affordances; social-ecological urbanism; urban resilience; geographic information system; depression; densification; complex adaptive system; spatial planning; green-blue infrastructure; subjektivt välbefinnande; affordance; social-ekologisk stadsbyggnad; urban resiliens; geografiska informationssystem; depression; förtätning; komplexa adaptiva system; grön infrastruktur; Hållbar stadsutveckling; Sustainable Urban Development;

    Abstract : This thesis addresses the need for urban landscapes that provide resilient contributions to inhabitants’ well-being while also limiting impacts on the Earth system. It aims to (1) advance a nuanced understanding of how urban environments relate to urban dwellers’ well-being, and (2) formulate guidelines for planning that supports urban dwellers’ well-being and align with global sustainability. READ MORE

  5. 8. Modeling Width in Spatial Optimization in Raster Space

    Author : Lindsi Seegmiller; Takeshi Shirabe; Lars Harrie; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; raster-based geographic information system; spatial optimization; region selection; width; optimal routing; raster data modeling; distortion; corridor; rasterbaserat geografiskt informationssystem; rumslig optimering; regionval; bredd; optimal routing; rasterdatamodellering; distorsion; korridor; Geoinformatik; Geoinformatics;

    Abstract : Given a grid of cells, each of which is assigned a numerical value quantifying its utility (or cost) for a certain use, a popular type of problem in geographic information science is raster-based spatial optimization. Such problems commonly seek to find a set of cells that maximizes (or minimizes) that utility (or cost) while adhering to a given set of constraints. READ MORE

  6. 9. From Art Galleries to Terrain Modelling --- A Meandering Path through Computational Geometry

    Author : Mikael Hammar; Data Vetenskap; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; system; numerisk analys; Datalogi; systems; control; numerical analysis; Approximation Algorithms; Computational Geometry; Online Algorithms; Art Gallery Problem; Linear Search; Traveling Salesman Problem; R-Tree; Delaunay Triangulation; Polygon Exploration; Computer science; Shortest Watchman Routes; kontroll; Mathematics; Matematik;

    Abstract : We give approximation and online algorithms as well as data structures for some well studied problems in computational geometry. The thesis is divided into three parts. In part one, we study problems related to guarding, exploring and searching geometric environments. READ MORE

  7. 10. Optimization modeling of frequency reserves and inertia in the transition to a climate-neutral electricity system

    Author : Jonathan Ullmark; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; generation expansion planning; frequency reserves; inertia; Energy system modeling; synthetic inertia; frequency control;

    Abstract : The ongoing transition towards electricity production systems that are dominated by wind and solar power challenge both the traditional strategy for meeting a varying electricity demand and the traditional way of controlling the AC frequency of the electricity grid. This work investigates how frequency reserves (FR) and inertia, as well as inter-hourly variation management interact in the transition to a climate-neutral electricity system. READ MORE