Sökning: "natural frequency analysis"

Visar resultat 36 - 40 av 417 avhandlingar innehållade orden natural frequency analysis.

  1. 36. Topics in Analysis and Computation of Linear Wave Propagation

    Författare :Mohammad Motamed; Olof Runborg; Shi Jin; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Numerical analysis; Numerisk analys;

    Sammanfattning : This thesis concerns the analysis and numerical simulation of wave propagation problems described by systems of linear hyperbolic partial differential equations. A major challenge in wave propagation problems is numerical simulation of high frequency waves. LÄS MER

  3. 37. Life cycle assessment of transport systems and transport infrastructure : Investigating methodological approaches and quantifying impacts at project and network levels

    Författare :Carolina Liljenström; Anna Björklund; Susanna Toller; Rolf André Bohne; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Strategier för hållbar utveckling; Strategies for sustainable development;

    Sammanfattning : Reducing greenhouse gas emissions from the transport sector is a key challenge to reach global climate targets and limit global warming to below 2 ºC. The use of life cycle assessment (LCA) may provide knowledge about the environmental impacts of transport systems so that emission reduction measures can be identified. LÄS MER

  4. 38. Analysis and Optimisation of Real-Time Systems with Stochastic Behaviour

    Författare :Sorin Manolache; Petru Eles; Zebo Peng; Xiaobo Hu; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Embedded systems; Real-time systems; System level design and optimisation; Stochastic execution times; Performance analysis; Networks-on-chip; Computer science; Datavetenskap;

    Sammanfattning : Embedded systems have become indispensable in our life: household appliances, cars, airplanes, power plant control systems, medical equipment, telecommunication systems, space technology, they all contain digital computing systems with dedicated functionality. Most of them, if not all, are real-time systems, i.e. LÄS MER

  5. 39. Non-Invasive Multidimensional Imaging Applied on Biological Substances

    Författare :Anders Kaestner; Högskolan i Halmstad; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microwave propagation; Tomography; Polarimetry; Frequency estimation; Anisotropic media; Wood; Muscles; Paper; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : This thesis presents the research and development of a microwave in-strument to capture tomographic information from the inner structure ofthe biological sample. The principle of the instrument is based on theanisotropy introduced by the fibres in materials such as wood and musclesin terms of information regarding changes in the fibre structure. LÄS MER

  7. 40. Conservation of semi-natural grasslands : Effects of different management methods on biodiversity

    Författare :Malin Tälle; Lars Westerberg; Per Milberg; Uno Wennergren; Hans Henrik Bruun; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Species-rich semi-natural grassland are valuable habitats in the agricultural landscape as they may contain a high diversity of both plant and animal species, as well as provide essential ecosystem services like pollination. To keep these habitats open and to maintain the biodiversity in them, management like grazing or mowing is necessary. LÄS MER