Sökning: "log driving"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden log driving.

  1. 1. "Flottningen dör aldrig" : bäckflottningens avveckling efter Ume- och Vindelälven 1945-70

    Författare :Erik Törnlund; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; forestry work; timber floating; transport history; log driving; forest history; floatways; rivers; tributaries; Nothern Sweden; Economic history; Ekonomisk historia;

    Sammanfattning : The aim of this thesis has been to study and analyse in detail the process by which timber floating in tributaries was phased out. The region covered is that of the Ume and Vindel rivers and the period studied is 1945-70. The years I945-60 have been the most central to the analysis. LÄS MER

  3. 2. Electrification of Private Mobility: Driving Patterns, Multi-Car Households and Infrastructure

    Författare :Niklas Jakobsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; GPS-measured driving data; destination-based analysis; user-centered analysis; Battery electric vehicles; two-car households;

    Sammanfattning : Electrification of personal vehicles has the potential to significantly reduce carbon emissions. However, a large-scale transition to electric vehicles may be difficult as there are many individuals who collectively need to transition to this technology. LÄS MER

  4. 3. On Battery Electric Vehicles: Driving Patterns, Multi-Car Households and Infrastructure

    Författare :Niklas Jakobsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; BEV; battery size; individual movement pattern.; Electro-mobility; GPS-logging;

    Sammanfattning : The transportation sector is responsible for a quarter of all greenhouse gas emissions in Europe. Though the transport system may be difficult to change into a less polluting system, electric vehicles may be a possible approach. LÄS MER

  5. 4. Topics in projective algebraic optimization

    Författare :Lukas Gustafsson; Sandra Di Rocco; Kathlén Kohn; Cordian Riener; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis explores optimization challenges within algebraic statistics, employing both topological and geometrical methodologies to derive new insights. The main focus is the optimization degree of nearest point and Gaussian maximum likelihood estimation problems with algebraic constraints. LÄS MER

  7. 5. Voronoi Constellations for Coherent Fiber-Optic Communication Systems

    Författare :Shen Li; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coded modulation; constellation shaping; geometric shaping; forward error correction coding; lattices; Voronoi constellations.; multidimensional modulation formats; Achievable information rates; coherent fiber-optic communications;

    Sammanfattning : The increasing demand for higher data rates is driving the adoption of high-spectral-efficiency (SE) transmission in communication systems. The well-known 1. LÄS MER