Search for dissertations about: "internal devices"

Showing result 6 - 10 of 135 swedish dissertations containing the words internal devices.

  2. 6. Activity avoidance, perceived walking difficulties, and use of mobility devices in people with Parkinson's disease

    Author : Manzur Kader; Aktivt och hälsosamt åldrande; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Activity avoidance; Assistive devices; Difficulty walking; Falls; Fear of falling; ICF; mSAFFE; Near falls; Patient outcome assessment; PROM; Psychometrics; Parkinson’s Disease; Reliability; Validity; Walk-12G; Walking aids; Wheelchairs; Wheeled-walker;

    Abstract : Background: Parkinson's disease (PD) is a chronic progressive neurodegenerative disease that results in functional loss and disability. People with PD have an increased risk of falling, and most of their falls occur while walking. As yet, there is limited knowledge concerning activity avoidance due to perceived risk of falling in people with PD. READ MORE

  4. 7. Electromagnetic simulation and design of etched diffraction grating demultiplexers

    Author : Jun Song; Sailing He; Dries Van Thourhout; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; etched diffraction grating; wavelength division multiplexing; passive devices; diffraction grating; planar waveguide devices; DWDM; optical communication.; Photonics; Fotonik;

    Abstract : Among various planar lightwave circuits for multiplexing/demultiplexing in an optical communication system, etched diffraction gratings (EDGs) have shown great potential due to their compactness and high spectral finesse. Conventional numerical methods for grating simulation cannot be used to simulate an EDG demultiplexer of large size (in terms of the wavelength). READ MORE

  5. 8. Luminescent Silicon Nanocrystals: From Single Quantum Dot to Light-harvesting Devices

    Author : Jingjian Zhou; Ilya Sychugov; Jan Linnros; Peter Schall; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; silicon quantum dots; photoluminescence; quantum yield; internal quantum efficiency; luminescent solar concentrator; Optics and Photonics; Optik och fotonik;

    Abstract :       Silicon (Si) serves as the basic material of the system-on-a-chip industry and photovoltaic panels nowadays. This is mostly thanks to its high abundance in the earth’s crust, thereby low cost, virtually non-toxicity, and superior stability. READ MORE

  6. 9. Metal Gate Technology for Advanced CMOS Devices

    Author : Gustaf Sjöblom; Jörgen Olsson; Stefan de Gendt; Uppsala universitet; []
    Keywords : Electronics; metal gate; high-k dielectrics; titanium nitride; zirconium nitride; MOSFET; thin film; work function; XPS; Elektronik;

    Abstract : The development and implementation of a metal gate technology (alloy, compound, or silicide) into metal-oxide-semiconductor field effect transistors (MOSFETs) is necessary to extend the life of planar CMOS devices and enable further downscaling. This thesis examines possible metal gate materials for improving the performance of the gate stack and discusses process integration as well as improved electrical and physical measurement methodologies, tested on capacitor structures and transistors. READ MORE

  7. 10. Development and application of laser diagnostics - from laboratory devices towards practical combustion engines

    Author : Zhenkan Wang; Förbränningsfysik; []
    Keywords : Combustion diagnostics; Laser induced fluorescence LIF ; Ultra-high-speed; Burst-mode laser; Ballistic imaging; Particle imaging velocimetry; Laser Doppler anemometry; Turbulent premixed combustion; Plasma; Internal combustion engine; Partially premixed combustion PPC ; Auto-ignition; OH radical; CH2O formaldehyde ; Fysicumarkivet A:2018:Wang;

    Abstract : For many decades, research work on combustion has been focused on improving combustion efficiency and reducing harmful emissions. Laser diagnostics is one of the best ways to investigate the combustion process and emission formation as it is non-intrusive and it has high spatiotemporal resolution. READ MORE