Search for dissertations about: "Martin boundary"

Showing result 11 - 15 of 63 swedish dissertations containing the words Martin boundary.

  2. 11. Entering the dynamic risk space : Assessing planetary boundary interactions through process-based quantifications

    Author : Arne Tobian; Johan Rockström; Sarah Cornell; Ingo Fetzer; Dieter Gerten; Martin Volk; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Planetary boundaries; climate change; land-use change; Earth system interactions; ecosystem modeling; green water; vetenskap om hållbar utveckling; Sustainability Science;

    Abstract : The planetary boundaries framework is an effort to define a safe operating space for humanity. Its rationale is that sustainable development needs to be achieved in ways that safeguard the stability of the Earth system on which human prosperity relies. READ MORE

  4. 12. Fully Nonlinear Unsteady Three-Dimensional Boundary Element Method for Force Predictions on a Restrained Hull in Waves

    Author : Martin Kjellberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; time-dependent; BEM; nested domain; fully nonlinear; free-surface;

    Abstract : There is a need from both academia and industry for more accurate and efficient methods for predicting the behavior of ships in a seaway. A large variety of methods with varying level of sophistication and accuracy already exists today. READ MORE

  5. 13. Boundary Shape Optimization Using the Material Distribution Approach

    Author : Fotios Kasolis; Martin Berggren; Eddie Wadbro; Mats Larson; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Design optimization; Helmholtz equation; linear elasticity; FEM; fictitious domain methods;

    Abstract : .... READ MORE

  6. 14. Thermal cracking of young concrete : partial coefficients, restraint effects and influence of casting joints

    Author : Martin Nilsson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Abstract : Cracks can occur due to temperature induced movements during the hardening phase of concrete. Thermal cracks are not decisive for the load-bearing capacity but cause costs for repair and may reduce the life of the structure. The risk of cracking can be judged through safety values, (partial coefficients) given in building codes. READ MORE

  7. 15. Modelling and analysis of multiphysical interactions in hydropower rotor systems

    Author : Martin Karlsson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Abstract : In this thesis the objective is to develop rotordynamical models of hydropower units, where coupling between mechanical, electromagnetic and fluid dynamical system systems is of certain interest. Both fluid-rotor and electromechanical interactions are known to change the system coefficients of the rotor system, which affects eigenfrequencies, damping, stability and response. READ MORE