Sökning: "trollhättan"

Visar resultat 11 - 14 av 14 avhandlingar innehållade ordet trollhättan.

  1. 11. Lokal Agenda 21 för hållbar utveckling : en studie av miljöfrågan i tillväxtsamhället

    Författare :Björn Forsberg; Umeå universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Sustainable development; economic growth; Local Agenda 21; economism; ecological modernisation; social ecology; dialectic; ecological compromises;

    Sammanfattning : The aim of this thesis is to analyse sustainable development as a political challenge at the local level of governance. It explores how local organisation for sustainable development (LA21, a short form of local Agenda 21) is influenced by economic conditions in contemporary society, as well as the specific conditions in the local context. LÄS MER

  2. 12. Porjus : en vision för industriell utveckling i övre Norrland

    Författare :Staffan Hansson; Luleå tekniska universitet; []
    Nyckelord :HUMANITIES; HUMANIORA; HUMANIORA; HUMANITIES; Teknikhistoria; History of Technology;

    Sammanfattning : In the late 19th century it became possible to utilize electricity in lighting, industrial processes and for traction. To Sweden, which at that time was gradually being transformed from an overwhelmingly agrarian country into an industrialized nation, this was of great advantage because Sweden was a country well furnished with hydro-electric power, but almost completely lacking in other sources of energy. LÄS MER

  3. 13. Mathematical Optimization in Flexible Job Shop Scheduling: Modelling, Analysis, and Case Studies

    Författare :Karin Thörnblad; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flexible job shop scheduling; Mixed integer linear programming MILP ; Time-indexed formulation; Makespan; Tardiness; Fixture availability; Preventive maintenance; Night shift; Unmanned time window; Dynamic scheduling; Priority rules; Dispatching rules; Critical ratio; Priority rules;

    Sammanfattning : The major theme of this thesis is the mathematical optimization modelling of the flexible job shop scheduling problem. This problem is present in the so-called multitask cell—a production cell at GKN Aerospace's facility located in Trollhättan, Sweden—which has served as a case study during the work with this thesis. LÄS MER

  4. 14. Microstructure and hydrogen embrittlement of additively manufactured Ti-6Al-4V

    Författare :Magnus Neikter; Marta-Lena Antti; Pia Åkerfeldt; Robert Pederson; Ola Harrysson; Luleå tekniska universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; Ti-6Al-4V; Additive Manufacturing; Texture; Microstructure; Hydrogen Embrittlement; Engineering Materials; Materialteknik;

    Sammanfattning : The work of this doctoral thesis has been performed between the 24th of August 2015 to the 6th of September 2019. The general purpose of this work has been to increase the knowledge of additively manufactured Ti-6Al-4V when it comes to microstructure, texture and hydrogen embrittlement. LÄS MER