Sökning: "system boundaries"

Visar resultat 1 - 5 av 365 avhandlingar innehållade orden system boundaries.

  1. 1. Energy efficiency improvements in logistics as a means to environmental sustainability: The case of capacity utilisation in road freight transportation

    Författare :Jessica Wehner; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; SAMHÄLLSVETENSKAP; ENGINEERING AND TECHNOLOGY; SOCIAL SCIENCES; Capacity utilisation; household logistics capability; system levels; distribution structure; logistics system; energy efficiency; last-mile fulfilment; overcapacity; system boundaries; road freight transportation;

    Sammanfattning : The energy consumption in logistics, and especially in road freight transportation, is steadily increasing and with that the greenhouse gas emissions which have a negative impact on the environment. In order to improve environmental sustainability of logistics, a change in the actors’ behaviour and policies is needed since the development of technology alone is not sufficient. LÄS MER

  2. 2. Developing Methods for Modelling Procedures in System Analysis and System Dynamics

    Författare :Hördur Haraldsson; Institutionen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; System Dynamics; System Analysis; group model building; modelling procedures; innovation phases; modelling workflow; Natural science; Naturvetenskap; Technological sciences; Teknik;

    Sammanfattning : System Thinking is the mindset of defining and confining a problem and its symptoms as well as a method for communicating system understanding. System Analysis is taking that problem apart to understand its causalities and structural arrangement. LÄS MER

  3. 3. System Expansion and Allocation in Life Cycle Assessment With Implications for Wastepaper Management

    Författare :Tomas Ekvall; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; allocation; system expansion; LCI methodology; waste incineration; waste management; system boundaries; life cycle inventory analysis; paper recycling; environmental life cycle assessment; modelling;

    Sammanfattning : The choice of system boundaries and allocation methods can have decisive effects on the results and conclusions of a life cycle assessment (LCA). System expansion makes it possible to model the indirect effects of a decision; however, this modelling is often based on inaccurate assumptions. LÄS MER

  4. 4. Solvable Topological Boundaries

    Författare :Flore Kiki Kunst; Emil Bergholtz; Henning Schomerus; Stockholms universitet; []

    Sammanfattning : The hallmark of topological phases of matter is the presence of robust boundary states. In this dissertation, a formalism is developed with which analytical solutions for these states can be straightforwardly obtained by making use of destructive interference, which is naturally present in a large family of lattice models. LÄS MER

  5. 5. Organising Purchasing and Supply Management Across Company Boundaries

    Författare :Ingrid Hessel; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; boundaries; Purchasing; organising; relationships; supply management;

    Sammanfattning : This thesis deals with the organising of purchasing and supply management. Many researchers claim that organising is an important determinant of purchasing and supply management performance. However, previous research focuses more on other aspects than on organisational arrangements. Existing organising research adopts a mainly firm internal focus. LÄS MER