Sökning: "lifting"

Visar resultat 1 - 5 av 89 avhandlingar innehållade ordet lifting.

  1. 1. Work technique in lifting and patient transfer tasks

    Författare :Katarina Kjellberg; Göteborgs universitet; []
    Nyckelord :age; biomechanics; gender; lifting; low back disorders; methods; observations; nurses; patient comfort; patient handling; patient; safety; work technique;

    Sammanfattning : The overall aim of this thesis was to explore and develop methods for describing, analysing and assessing work technique in lifting and patient transfer tasks, and to study how the work technique is related to personal factors and aspects of patient quality and safety. The focus was on work technique features with implications for musculoskeletal load and for the development of musculoskeletal disorders. LÄS MER

  3. 2. Development of Vortex Filament Method for Aerodynamic Loads on Rotor Blades

    Författare :Hamidreza Abedi; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lifting line; vortex lattice method; free wake; rotor blade; prescribed wake; lifting surface; aerodynamic load; wind turbine;

    Sammanfattning : Wind power is currently one of the most reliable new energy sources serving as an alternative tofossil fuel generated electricity and is known as a widely distributed clean and renewable sourceof energy. It is now the world’s fastest growing energy source and has also become one of themost rapidly expanding industries. LÄS MER

  4. 3. Numerical optimization of hull/propeller/rudder configurations

    Författare :Kaijia Han; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fuel cost savings; optimization; pressure fluctuation; self-propulsion; RANS; verification and validation; cavitation; open water; lifting surface; hull-propeller-rudder; effective wake; efficiency; aspect ratio; lifting line; interaction;

    Sammanfattning : The new framework of the global economy has stimulated and expanded the shipbuilding and shipping industry, especially in Asia in the twenty-first century. This induces urgent and high requirements on designing and building both conventional and new types of ships with high performance, such as high speed, manoeuvrability, seaworthiness and so on. LÄS MER

  5. 4. A general framework for hybrid H-control

    Författare :Anna-Karin Christiansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Riccati equation; discrete-time; hold-states; H-control; weight functions; lifting; output feedback; hybrid systems; samled-data;

    Sammanfattning : .... LÄS MER

  7. 5. A unified framework for mixed continuous/discrete-time H_infinity -control

    Författare :Anna-Karin Christiansson; Bengt Lennartson; Pertti Mäkillä; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; H_inf-control; output feedback; Riccati equation; mixed continuous discrete-time systems; sampled-data; lifting; reduced controller order; loop-shaping; weight functions; Automatic control; Reglerteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : .... LÄS MER