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Showing result 21 - 25 of 80 essays matching the above criteria.

  1. 21. Analysis of Positional Precision when Using Ground Control Points with Supported INS in GNSS-Free Environments

    University essay from KTH/Fastigheter och byggande

    Author : Linus Bäckström; Patrik Grenert; [2021]
    Keywords : Track maintenance; GNSS; INS; GCP; GNSS-free environments; Railway positioning; Rälsunderhåll; GNSS; INS; Kända punkter; Avsaknad av GNSS; Positionering på räls;

    Abstract : Railway traffic is one of the most used transportation methods in today's society both for freight transports and transportation of people. A necessity for this to function is that the tracks upon which the trains travel are functional. READ MORE

  3. 22. Improving accessibility to the bus service : Building an accessibility measurement tool in QGIS

    University essay from Umeå universitet/Institutionen för geografi

    Author : Philip Lindén; [2021]
    Keywords : public transportation; public transit; fixed route transit systems; buses; bus stops; accessibility; measuring accessibility; measuring performance; social exclusion; vulnerable groups; GIS; QGIS; Graphical Modeler;

    Abstract : Satisfactory public transportation (PT) should enable people to reach attractive destinations and desired activities fast, comfortably, safely, and affordably. When PT fails to do so it will have negative effects on the overall accessibility in a society. READ MORE

  4. 23. Sexually segregated habitat selection in Daubenton’s bat Myotis daubentonii

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Esnart Emma Bwalya Chibwe; [2021]
    Keywords : sexual segregation; Daubenton’s bat; Myotis daubentonii; landscape analysis; habitat selection; foraging;

    Abstract : Sexual segregation is a phenomenon present in many vertebrate taxa, including the bat order Chiroptera. Sexual segregation is a social and/or habitat separation based on sex and is driven by varying causes such as sexual dimorphism, resource and physiological limitations, predator avoidance and many other factors. READ MORE

  5. 24. Traffic Prediction From Temporal Graphs Using Representation Learning

    University essay from KTH/Matematisk statistik

    Author : Andreas Movin; [2021]
    Keywords : Dynamic time warping DTW ; embedding; graph convolutional networks GCN ; graph neural networks GNN ; persistent homology; spectral graph theory; temporal graphs; topological data analysis TDA ; Dynamisk time warping DTW ; inbäddning; convolutional grafnätverk GCN ; neurala grafnätverk GNN ; persistent homologi; spektral graf teori; dynamisk graf; topologisk dataanalys TDA ;

    Abstract : With the arrival of 5G networks, telecommunication systems are becoming more intelligent, integrated, and broadly used. This thesis focuses on predicting the upcoming traffic to efficiently promote resource allocation, guarantee stability and reliability of the network. READ MORE

  6. 25. Spatiotemporal Fidelity of a Metapopulational Model Evaluated on the COVID-19 Pandemic in Sweden

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Filip Skogh; [2021]
    Keywords : Epidemiology; COVID-19; Sweden; Metapopulation; SEIR; Model;

    Abstract : A modified SEIR compartmental model is constructed for COVID-19 in a metapopulational setting with fine-scaled population data. The model is stochastically simulated with GLEAMviz that provides realistic short and long distance mobility based on real-world data. READ MORE