Avancerad sökning

Hittade 4 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. A framework for supply chain configuration for a biomass-to-energy pre-treatment process

    Författare :Martin Svanberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : A transition from fossil fuel to renewable energy sources such as biomass is an environmentally sustainable pathway. However, increased use of biomass is hampered by a number of barriers regarding movement of energy: through place, through time and through existing energy infrastructure. LÄS MER

  3. 2. Improving physical flows in biomass-to-energy supply chains by means of pre-treatment technology and coordination

    Författare :Martin Svanberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pre-treatment technology; torrefaction and coordination; supply chain; biomass-to-energy; physical flow; logistics;

    Sammanfattning : AbstractThe transition from fossil fuel to renewable energy sources such as biomass-to-energy (B2E) is an environmentally sustainable pathway. However, increased use of biomass is hampered by the high costs of logistics activities within the physical flow. LÄS MER

  4. 3. Material distribution-based topology optimization for wave propagation problems

    Författare :Ahmad Hasnain Bokhari; Eddie Wadbro; Martin Berggren; Roland Herzog; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; topology optimization; material distribution; wave propagation problems; Helmholtz equation; acoustics; electromagnetics; plasmonics;

    Sammanfattning : This thesis employs material distribution-based topology optimization for wave propagation problems. In the material distribution approach, we define a material indicator function that models the presence and absence of material in a design domain. LÄS MER

  5. 4. Quasi-Arithmetic Filters for Topology Optimization

    Författare :Linus Hägg; Martin Berggren; Eddie Wadbro; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Topology optimization is a framework for finding the optimal layout of material within a given region of space. In material distribution topology optimization, a material indicator function determines the material state at each point within the design domain. LÄS MER