Sökning: "distance spectrum"

Visar resultat 16 - 20 av 80 avhandlingar innehållade orden distance spectrum.

  1. 16. Lumbar muscle fatigue and recovery : evaluation of electromyography in patients with long-term low-back pain and in healthy subjects

    Författare :Britt Elfving; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Disability; electromyography; exponential; force level; gender; healthy subjects; interelectrode distance; low-back pain; erector spinae; maximal voluntary contraction; muscle fatigue; recovery; reliability; validity.;

    Sammanfattning : Background: Lumbar muscle function is considered to be an important component of longterm low- back pain. The change in the median frequency of the power spectrum of the electromyographic (EMG) signal is commonly used to estimate muscle fatigue. LÄS MER

  3. 17. Availability Assessment for Secondary Access in TV White Space

    Författare :Lei Shi; Jens Zander; Ki Won Sung; Tim Irnich; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : In recent years, the rapid growth in wireless data traffic has posed not only unique opportunities but also great challenges for the wireless industry. In order to meet the growing demand without excessive cost or energy consumption, one feasible option for the operators is to acquire more spectrum for wireless communication. LÄS MER

  4. 18. Study of quantum dots on solar energy applications

    Författare :Xiangjun Shang; Ying Fu; Rajeev Ahuja; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Epitaxial InAs quantum dot solar cell;

    Sammanfattning : This thesis studies p-i-n GaAs solar cells with self-assembled InAs quantum dots (QDs) inserted. The values of this work lie in three aspects. LÄS MER

  5. 19. Spectral estimates and Ambartsumian-type theorems for quantum graphs

    Författare :Rune Suhr; Pavel Kurasov; Annemarie Luger; Alexei Rybkin; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Spectral estimates; quantum graphs; Ambartsumian; trigonometric polynomials; Mathematics; matematik;

    Sammanfattning : This thesis consists of four papers and deals with the spectral theory of quantum graphs. A quantum graph is a metric graph equipped with a self-adjoint Schrödinger operator acting on functions defined on the edges of the graph subject to certain vertex conditions. LÄS MER

  7. 20. Fluorescence fluctuation studies of biomolecular interactions in solutions, biomembranes and live cells

    Författare :Volodymyr Chmyrov; Jerker Widengren; Antoine Delon; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; FCS; FCCS; Isomerization; TRAST; NMR; FRET; biomombrane; fluidity; Biological Physics; Biologisk fysik;

    Sammanfattning : Fluorescence spectroscopy and imaging have a very broad spectrum of applicationswithin the life sciences, in particular for detection and characterization ofbiomolecular dynamics and interactions in different environments. This thesis comprisesprojects that strive to further expand the information content extracted fromthe detected fluorescence, leading to sensitive readout parameters for studies ofbiomolecular dynamics and interactions. LÄS MER