Search for dissertations about: "grader"

Showing result 16 - 20 of 85 swedish dissertations containing the word grader.

  2. 16. Improving Manipulation and Control of Search and Rescue UGVs Operating Across Autonomy Levels

    Author : Fredrik Båberg; Petter Ögren; Paolo Robuffo Giordano; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datalogi; Computer Science;

    Abstract : Robots are often used for “dirty, dull and dangerous” jobs, where time, money or lives can be saved. A field with dangerous situations is search and rescue, with structural collapses and toxic environment. In those situations, robots have the potential to save lives. READ MORE

  4. 17. Space-adaptive simulation of transition and turbulence in shear flows

    Author : Daniele Massaro; Philipp Schlatter; Saleh Rezaeiravesh; Alfredo Pinelli; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulence; global stability; coherent structures; adaptive mesh refinement; Turbulens; global stabilitet; koherenta strukturer; adaptiv nätförfining; Teknisk mekanik; Engineering Mechanics;

    Abstract : Transitional and turbulent shear flows are ubiquitous, from the boundary layer developing on an aeroplane wing to the flow within the aortic arch. In this thesis, we study wall-bounded and free shear flows through direct numerical simulations. READ MORE

  5. 18. On the Role of Envisioned Futures in Sustainability Transitions

    Author : Alexandra Nikoleris; Miljö- och energisystem; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; förväntningar; socio-teknisk förändring; framtidsbilder; envisioned futures; sustainability transitions; expectations; structure and agency;

    Abstract : Different kinds of representations of the future are often asked for in order to motivate and inspire societal change. These envisioned futures can be based on political or behavioural change, or may visualize technical developmentwhich could help us solve complex societal problems. READ MORE

  6. 19. Work ability in multiple sclerosis : the impact of immunomodulating treatments and adjusted working conditions

    Author : Anne Wickström; Anders Svenningsson; Magnus Vrethem; Charlotte Dahle; Lars Forsgen; Fredrikson Sten; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : Background Multiple sclerosis (MS) is a chronic inflammatory, demyelinating disease affecting the central nervous system (CNS) and is considered to be of autoimmune origin. The prevalence in Sweden is estimated to be about 1 in 500. READ MORE

  7. 20. A study of mold flux entrapment and gas entrainment in an ingot casting process

    Author : Jun Yin; Mikael Ersson; Pär Jönsson; Yogeshwar Sahai; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mold flux entrapments; CFD; Gas entrainment; Ingot casting process; Uphill teeming process; Side teeming process; Numerical simulation; Non-metallic inclusions; Metallurgical process science; Metallurgisk processvetenskap; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : The focus of this work is to study the gas entrainment and mold flux entrapments during the ingot filling process based on physical and numerical modelling.The formation of the free surface was investigated in the uphill teeming method, which illustrates a dynamic change at a quasi-steady state. READ MORE