Search for dissertations about: "V White"

Showing result 1 - 5 of 81 swedish dissertations containing the words V White.

  1. 1. Luminescence Properties of ZnO Nanostructures and Their Implementation as White Light Emitting Diodes (LEDs)

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Naveed ul Hassan Alvi; Magnus Willander; Omer Nour; Vladimir V. Mitin; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nanotechnology; Zinc oxide; nanostructures; luminescence; LEDs; color rendering; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : In this thesis, luminescence properties of ZnO nanostructures (nanorods, nanotubes, nanowalls and nanoflowers) are investigated by different approaches for possible future application of these nanostructures as white light emitting diodes. ZnO nanostructures were grown by different growth techniques on different p-type substrates. READ MORE

  2. 2. Non-intrusive Methods for Mode Estimation in Power Systems using Synchrophasors

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Vedran Peric; Luigi Vanfretti; Xavier Bombois; Cristian Rojas; Mani V. Venkatasubramanian; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Synchrophasors; Phasor measurement units; system identification; mode estimation; electromechanical oscillations; prediction error; signal selection; experiment design; probing; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Real-time monitoring of electromechanical oscillations is of great significance for power system operators; to this aim, software solutions (algorithms) that use synchrophasor measurements have been developed for this purpose. This thesis investigates different approaches for improving mode estimation process by offering new methods and deepening the understanding of different stages in the mode estimation process. READ MORE

  3. 3. Striving against adversity. the dynamics of migration, health and poverty in rural South Africa

    University dissertation from Umeå : Epidemiologi och folkhälsovetenskap

    Author : Mark A Collinson; Peter Byass; Gunnar Malmberg; Kathleen Kahn; Michael White; [2009]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; migration; temporary migration; permanent migration; refugee settlement; socioeconomic status; HIV transmission; adult mortality; child mortaality; returning to die; MEDICINE Social medicine Public health medicine research areas Epidemiology; MEDICIN Socialmedicin Folkhälsomedicinska forskningsområden Epidemiologi; Epidemiology; epidemiologi;

    Abstract :  Background: The study is based in post-apartheid South Africa and looks at the health and well being of households in the rural northeast. Temporary migration remains important in South Africa because it functions as a mainstay for income and even survival of rural communities. READ MORE

  4. 4. The justification and legitimacy of the active welfare state some philosophical aspects

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Mikael Dubois; Sven Ove Hansson; Stuart White; [2015]
    Keywords : HUMANIORA; HUMANITIES; Political philosophy; social justice; justification; legitimacy; welfare state; social insurance; prevention; conditionality; active welfare state; Philosophy; Filosofi;

    Abstract : This thesis has two aims. The first aim is to set out an argument for social insurance in the form of compulsory income insurance in the event of sickness or unemployment, and to explore two lines of arguments for social insurance policies that are commonly associated with an active welfare state that seeks to prevent or reduce reliance on social insurance. READ MORE

  5. 5. The faintest stars : A study of white, red and brown dwarfs

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Leif Festin; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomy; brown dwarfs; white dwarfs; M dwarf; low luminosity; luminosity function; mass function; Pleiades; Astronomi; NATURAL SCIENCES Physics Astronomy and astrophysics; NATURVETENSKAP Fysik Astronomi och astrofysik; astronomi; Astronomy;

    Abstract : The local space density of the faintest stars, including M dwarfs, white dwarfs and brown dwarfs has been studied by two different methods.By using dark nebulae as opaque outer screens, the luminosity functions of M dwarfs and white dwarfs were studied as volume-limited and dynamically unbiassed foreground samples. READ MORE