Avancerad sökning

Hittade 3 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Topological and Scaling Analysis of Geospatial Big Data

    Författare :Ding Ma; Bin Jiang; Shaowen Wang; Högskolan i Gävle; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Third definition of fractal; scaling; topology; power law; head tail breaks; ht-index; complex network; geospatial big data; natural cities; natural streets; Hållbar stadsutveckling; Sustainable Urban Development;

    Sammanfattning : Geographic information science and systems face challenges related to understanding the instinctive heterogeneity of geographic space, since conventional geospatial analysis is mainly founded on Euclidean geometry and Gaussian statistics. This thesis adopts a new paradigm, based on fractal geometry and Paretian statistics for geospatial analysis. LÄS MER

  3. 2. Living Structure for Understanding Human Activity Patterns Using Multi-Source Geospatial Big Data

    Författare :Zheng Ren; Bin Jiang; Stefan Seipel; Itzhak Benenson; Högskolan i Gävle; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; living structure; topological representation; human activities; natural cities; urban centres; complex network; head tail breaks; big data; Hållbar stadsutveckling; Sustainable Urban Development;

    Sammanfattning : Geographic space is not neutral or lifeless, but an intricate living structure composed of numerous small features and a few large ones across all scales. The living structure is crucial for comprehending how geographic space shapes human activities. LÄS MER

  4. 3. Population Displacement Estimation During Disasters Using Mobile Phone Data

    Författare :Silvino Pedro Cumbane; Yifang Ban; Gyözö Gidofalvi; Zeferino Saugene; John Östh; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geoinformatics; Geoinformatik;

    Sammanfattning : Natural disasters result in devastating losses in human life, environmental assets, and personal-, regional-, and national economies. The availability of different big data such as satellite images, Global Positioning System (GPS)traces, mobile Call Detail Records (CDR), social media posts, etc. LÄS MER