Sökning: "countermeasure"

Visar resultat 1 - 5 av 36 avhandlingar innehållade ordet countermeasure.

  1. 1. Mathematical Simulation of Vehicle-Pedestrian Collisions: Influence of Vehicle Impact Speed and Front-End Structure on the Dynamic Responses of Child and Adult Pedestrians

    Författare :Xuejun Liu; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; child pedestrian; impact biomechanics; mathematical model; vehicle front-end structure; safety countermeasure; impact speed; parametric study; scaling method;

    Sammanfattning : The development of effective countermeasures for pedestrian protection requires an understanding of how the impact speed and front-end design of the vehicle influence the injury risks of pedestrians. Because of the high involvement of children in pedestrian accidents, there is also a need for child pedestrian mathematical models. LÄS MER

  3. 2. Injury Biomechanics in Car-Pedestrian Collisions: Development, Validation and Application of Human-Body Mathematical Models

    Författare :Jikuang Yang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; impact biomechanics; car; mathematical dynamic model; pedestrian; safety countermeasure;

    Sammanfattning : The aim of this study was to develop and validate human-body mathematical models which can be used to simulate the dynamic responses of pedestrians in a car impact. The main focus has been on simulations of bumper impact to the lower extremities, since lower extremity injuries most frequently occur in car-pedestrian accidents and result in long-term consequences and high social costs. LÄS MER

  4. 3. Lime-cement columns as a countermeasure against train-induced ground vibration

    Författare :Mehdi Bahrekazemi; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  5. 4. Studies on coherent mid-infrared solid state sources for lidar and countermeasure applications

    Författare :Göran Hansson; KTH; []
    Nyckelord :Laser; non-linear optics;

    Sammanfattning : .... LÄS MER

  7. 5. Effects of unloading and resistance exercise on skeletal muscle function, size and composition in man

    Författare :Björn Alkner; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Atrophy; bed rest; confinement; countermeasure; electromyography; human; knee extensors; magnetic resonance imaging; microgravity; muscle function; myosin heavy chains; plantar flexors; resistance exercise; skeletal muscle; spaceflight; strength; training specificity; unloading;

    Sammanfattning : Exposure to microgravity, i.e., spaceflight, causes muscle unloading leading to muscle atrophy and dysfunction. Thus, there is a need for effective countermeasures to combat these effects. LÄS MER