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Visar resultat 1 - 5 av 14 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Signal Processing Techniques in Mobile Communication Systems : Signal Separation, Channel Estimation and Equalization

   Författare :Ronnie Landqvist; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wireless mobile communications; signal processing; blind source separation; independent component analysis; beamforming; water filling; greedy algorithm; exact eigendecomposition; eigenvector algorithm; multiple-input multiple-output systems; the projection approximation subspace tracking algorithm with and without deflation; linear and non-linear principal component analysis; whitening; decorrelation; equalization; antenna arrays;

   Sammanfattning : Over the last decade there has been an explosive growth in the use of wireless mobile communications. Second generations systems are mature technologies now and third generation systems and beyond are being implemented and researched. LÄS MER

3. 2. Constitutive behaviour and fracture toughness of an adhesive layer

   Författare :Anders Biel; Högskolan i Skövde; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; adhesive layer; DCB-specimen; experimental method; modus I; peel; standardized methods; damage zone; stress whitening; Engineering mechanics; Teknisk mekanik; Teknik; Technology;

   Sammanfattning : This report presents the fracture energy and the complete stress – elongation relation for a structural adhesive loaded in modus I. The experiments are performed on the Double Cantilever Beam (DCB) specimen and the method to analyse the experiments is based on the J-integral approach which means that the energy release rate, i.e. LÄS MER

4. 3. Whiteness and Fluorescence in Paper : Perception and Optical Modelling

   Författare :Ludovic Gustafsson Coppel; Per Edström; Håkan Olin; Caisa Johansson; Markku Hauta-Kasari; Mittuniversitetet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Paper Whiteness; Fluorescence Whitening Agents; Kubelka-Munk; light scattering; paper industry applications; Colour Appearance Models; CIECAM02; Monte Carlo; Optics; Optik;

   Sammanfattning : This thesis is about modelling and predicting the perceived whiteness of plain paper from the paper composition, including fluorescent whitening agents. This includes psycho-physical modelling of perceived whiteness from measurable light reflectance properties, and physical modelling of light scattering and fluorescence from the paper composition. LÄS MER

5. 4. Evaluation of hand skin temperature : Infrared thermography in combination with cold stress tests

   Författare :Katarina Leijon Sundqvist; Niklas Lehto; James Mercer; Luleå tekniska universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cold provocation; rewarming; thermoregulation; dynamic IR thermography; Health Science; Hälsovetenskap;

   Sammanfattning : AbstractSince ancient times, warm or cold skin on the human body has been used as a parameter in evaluating health. Changes in body temperature are attributed to diseases or disorders. The assessment of body temperature is often performed to measure fever by detecting an elevated core temperature. LÄS MER

7. 5. Upscaling Organic Electronic Devices

   Författare :Abdellah Malti; Xavier Crispin; Ananth Dodabalapur; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Conventional electronics based on silicon, germanium, or compounds of gallium require prohibitively expensive investments. A state-of-the-art microprocessor fabrication facility can cost up to $15 billion while using environmentally hazardous processes. LÄS MER