Sökning: "angle of incidence"

Visar resultat 11 - 15 av 37 uppsatser innehållade orden angle of incidence.

  1. 11. Low Complexity Beamformer structures for application in Hearing Aids

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

    Författare :Eleni Koutrouli; [2018]
    Nyckelord :hearing aids; beamformers; MVDR algorithm; microphone arrays;

    Sammanfattning : Background noise is particularly damaging to speech intelligibility for people with hearing loss. The problem of reducing noise in hearing aids is one of great importance and great difficulty. Over the years, many solutions and different algorithms have been implemented in order to provide the optimal solution to the problem. LÄS MER

  3. 12. Effects of Lattice Strain in Silicon Double Crystal Monochromators

    Magister-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/MAX IV-laboratoriet

    Författare :Johan Eckdahl; [2018]
    Nyckelord :synchrotron radiation physics max iv maxiv monochromator monochromation; Physics and Astronomy;

    Sammanfattning : Silicon double crystal monochromators are standard in modern synchrotron hard X-ray beamlines. Their role is reducing a polychromatic photon beam to a small range of wavelengths, typically within a bandwidth of 0.01-0.1%. LÄS MER

  4. 13. Transient Plasma Photonic Crystals - A Route Towards Slow Ultra-intense Light?

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Robin Weissenbilder; [2018]
    Nyckelord :slow; light; plasma; photonic; crystal; transient; ultra-intense; short; pulse; laser; Physics and Astronomy;

    Sammanfattning : Periodic electron and ion density modulations in near critical density plasmas induced by counterpropagating femtosecond pulses of intensities on the order of 10¹⁵ to 10¹⁶ Wcm⁻² are described in a linear and stationary regime and investigated using particle-in-cell simulations in one and two dimensions. The periodic gratings produce transient plasma photonic crystals lasting up to several picoseconds with ultra-wide angle-selective band gaps on the order of Δω/ω₀ ≈ 10-20%. LÄS MER

  5. 14. Performance evaluation of a rooftop solar photovoltaic power plant in the Gävle Arenaby (Gävle, Sweden): Installation testing

    Magister-uppsats, Högskolan i Gävle/Energisystem

    Författare :David Compadre Senar; [2018]
    Nyckelord :Installation test; module temperature; angle of incidence; solar irradiation; PV system.;

    Sammanfattning : The current energy situation is taking a turn towards renewable energies, due to the new pacts to curb global warming. These agreements, together with governmental aid, are facilitating an escalation in the production and improvement of new energy systems and the price decrease due to a larger-scale production. LÄS MER

  7. 15. Measurements and simulations of the performance of the PV systems at the University of Gävle

    Magister-uppsats, Högskolan i Gävle/Energisystem

    Författare :Laura Zabala Urrutia; [2017]
    Nyckelord :PV; PVperformance; PVPowerModel; CorrectionFactors; AngleofIncidence; Irradiation; Renewable Energy;

    Sammanfattning : In the following years, the countries will have to face an increase in the energy demand. So far, the fossil fuels have been the main source to meet the energy demand, but they involve serious problems: they contribute to the climate change with high emissions of greenhouse gases, there is an uneven distribution of these resources and their reserves are finite. LÄS MER