Sökning: "directional distance function"

Hittade 4 avhandlingar innehållade orden directional distance function.

  1. 1. Bioenergy, pollution, and economic growth

    Författare :Mattias Ankarhem; Runar Brännlund; David Stern; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Forest sector; Forest fuels; Dynamic factor demand; Adjustment costs; Economic growth; Pollution; Environmental Kuznets curve; Shadow price; Distance function; Nationalekonomi; Economics; Nationalekonomi; Economics; nationalekonomi;

    Sammanfattning : This thesis consists of four papers: two of them deal with the effects on the forest sector of an increase in the demand for forest fuels, and two of them concern the relation between economic growth and pollution. Paper [I] is a first, preliminary study of the potential effects on the Swedish forest sector of a continuing rise in the use of forest resources as a fuel in energy generation. LÄS MER

  3. 2. Essays on Productive Efficiency, Shadow Prices, and Human Capital

    Författare :Per-Olov Marklund; Thomas Aronsson; Chuan-Zhong Li; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; directional output distance function; Porter hypothesis; Burden-Sharing Agreement; Producer Responsibility Ordinance; Output of the educational sector; Nationalekonomi; Economics; Nationalekonomi; nationalekonomi; Economics;

    Sammanfattning : This thesis consists of five papers, four of them basically concerning environmental issues, while the fifth paper addresses the issue of measuring output from the educational sector. The first paper starts from the fact that industrial activity causes environmental damage. LÄS MER

  4. 3. Defect Induced Room-Temperature Ferromagnetism in ZnO and MgO Thin FIlms and Device Development

    Författare :Mukes Kapilashrami; Lyuba Belova; E Dan Dahlberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Room-temperature ferromagnetism; intrinsic defects; un-balanced balanced magnetron sputtering; magnetic anisotropy and photoconductivity; Materials science; Teknisk materialvetenskap;

    Sammanfattning : This thesis presents the discovery of defect induced room-temperature ferromagnetism in industrially important ZnO and MgO thin films, and establishes from a systematic study, in both ZnO and MgO films, the unique phenomenon of the sequences of transitions from ferromagnetism to para-, and eventually the well known diamagnetism of the bulk as a function of film thickness. Highly oriented and high quality dense thin films of ZnO and MgO have been deposited by reactive (balanced) magnetron sputtering under different ambience conditions and deposition temperatures. LÄS MER

  5. 4. Data Filtering and Control Design for Mobile Robots

    Författare :Maja Karasalo; Xiaoming Hu; John Baras; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; formation control; tracking; nonlinear control; optimal smoothing; adaptive filtering; Optimization; systems theory; Optimeringslära; systemteori;

    Sammanfattning : In this thesis, we consider problems connected to navigation and tracking for autonomousrobots under the assumption of constraints on sensors and kinematics. We study formation controlas well as techniques for filtering and smoothing of noise contaminated input. The scientific contributions of the thesis comprise five papers. LÄS MER