Sökning: "geografiska informationssystem"

Visar resultat 11 - 15 av 30 avhandlingar innehållade orden geografiska informationssystem.

  1. 11. Modeling and optimization of least-cost corridors

    Författare :Lindsi Seegmiller; Takeshi Shirabe; Kai-Florian Richter; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; raster data modeling; raster-based geographic information systems; route planning; optimal routing; corridor; wide path; corridor width; distortion; three-dimensional grid; rasterdatamodellering; rasterbaserade geografiska informationssystem; ruttplanering; optimal dirigering; korridor; bred väg; korridorbredd; distorsion; tredimensionellt rutnät; Geoinformatics; Geoinformatik;

    Sammanfattning : Given a grid of cells, each having a value indicating its cost per unit area, a variant of the least-cost path problem is to find a corridor of a specified width connecting two termini such that its cost-weighted area is minimized. A computationally efficient method exists for finding such corridors, but as is the case with conventional raster-based least-cost paths, their incremental orientations are limited to a fixed number of (typically eight orthogonal and diagonal) directions, and therefore, regardless of the grid resolution, they tend to deviate from those conceivable on the Euclidean plane. LÄS MER

  3. 12. Att tänka geografiskt i en digital undervisningsmiljö : En studie av högstadielärares kunskapsbas och användning av digitala verktyg i geografiundervisningen

    Författare :Sofie Nilsson; Gabriel Bladh; Ann-Britt Enochsson; Martin Kristiansson; Linnea Stenliden; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Geography education; geographical thinking; geographical analyses; digital tools; subject-specific digital tools; teachers’ knowledge base; TPACK; didactical model; geografididaktik; geografiskt tänkande; geografiska analyser; digitala verktyg; ämnesspecifika digitala verktyg; lärares kunskapsbas; TPACK; didaktisk modell; Pedagogiskt arbete; Educational Work;

    Sammanfattning : This compilation licentiate thesis focuses on geography teaching in a digital teaching and learning environment in the Swedish secondary school. Departing from a subject-didactic perspective, the aim was to explore the relation between teachers’ knowledge base, choices and usage of digital tools and geography teaching. LÄS MER

  4. 13. Platsens betydelse för lärande i primärvård på landsbygden : Digital vård och sociala rum

    Författare :Thomas Sjöström; Ann Svensson; Kristina Schildmejer; Högskolan Väst; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Work-integrated learning; e-Health; Digitalization; Primary care; Rural; Work Integrated Learning; Arbetsintegrerat lärande; Vårdvetenskap; Nursing science;

    Sammanfattning : IntroductionE-health, defined as digital healthcare services enabling remote contact between patient and caregiver, has gained increased attention in scientific research during the recent decades. Given the rapid pace of technological progress and the ever-changing nature of work, health care professionals constantly need to learn new technologies (Agrawal & Prabakaran, 2020; Carlander, 2021; Samuelson et al. LÄS MER

  5. 14. Methods to Improve and Evaluate Spatial Data Infrastructures

    Författare :Ara Toomanian; Centrum för geografiska informationssystem (GIS-centrum); []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Spatial data infrastructure; evaluation; balanced scorecard; geoportals; clearinghouse; web cartography; expert system; web services;

    Sammanfattning : This thesis mainly focuses on methods for improving and evaluating Spatial Data Infrastructures (SDIs). The aim has been threefold: to develop a framework for the management and evaluation of an SDI, to improve the accessibility of spatial data in an SDI, and to improve the cartography in view services in an SDI. LÄS MER

  7. 15. Modeling Width in Spatial Optimization in Raster Space

    Författare :Lindsi Seegmiller; Takeshi Shirabe; Lars Harrie; KTH; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER