Sökning: "value effect"

Visar resultat 21 - 25 av 1255 avhandlingar innehållade orden value effect.

  1. 21. Effects of impurities on charge transport in graphene field-effect transistors

    Författare :Marlene Bonmann; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carrier transport; electron and hole mobility; impurities; traps; graphene; field-effect transistors; microwave devices; saturation velocity; remote phonons;

    Sammanfattning : In order to push the upper frequency limit of high speed electronics further, thereby extending the range of applications, new device technologies and materials are continuously investigated. The 2D material graphene, with its intrinsically extremely high room temperature charge carrier velocity, is regarded as a promising candidate to push the frequency limit even further. LÄS MER

  3. 22. SiC based field effect sensors and sensor systems for combustion control applications

    Författare :Mike Andersson; Anita Lloyd Spetz; Udo Weimar; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SiC; Field Effect Sensors; Combustion Control; Other physics; Övrig fysik;

    Sammanfattning : Increasing oil prices and concerns about global warming have reinforced the interest in biofuels for domestic and district heating, most commonly through combustion of solid biomass like wood logs, hog fuel and pellets. Combustion at non-optimal conditions can, however, lead to substantial emissions of noxious compounds like unburned hydrocarbons, carbon monoxide, and nitrogen oxides as well as the generation of soot. LÄS MER

  4. 23. The value of evaluating and implementing pharmaceuticals

    Författare :Kasper Johannesen; Martin Henriksson; Lars-Åke Levin; Magnus Janzon; Katarina Steen Carlsson; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Pharmaceuticals are a central part of high-quality health care and a resource for improving population health. However, high prices set by private companies who develop and own the rights to new pharmaceuticals question the value that they contribute to the health care system. LÄS MER

  5. 24. Direct and indirect magnetocaloric properties of first- and second-order phase transition materials

    Författare :Sagar Ghorai; Peter Svedlindh; Martin Sahlberg; Gabriella Andersson; Ekkes Brück; Uppsala universitet; []
    Nyckelord :Magnetocaloric effect; Adiabatic temperature change; Direct measurement of magnetocaloric effect; Griffiths phase; Magneto-elastic transition; Magneto-structural transition; Second-order magnetic phase transition; First-order magnetic phase transition; Isothermal magnetic entropy change; Fysik; Physics;

    Sammanfattning : The energy-efficient and environmentally friendly alternative cooling technology based on the magnetocaloric effect (MCE) is discussed in this thesis. The thesis has two major parts, one devoted to material characterization and the other to instrument development. LÄS MER

  7. 25. Synthesizing value creation in IORs for innovation : six studies and a stretch of perspective from the specific to the general

    Författare :Sara Thorgren; Jonas Söderlund; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Entreprenörskap och innovation; Entrepreneurship and Innovation;

    Sammanfattning : This dissertation consists of six individual studies with the overall aim to contribute to understanding value creation in interorganizational relationships (IORs), which firms establish to achieve innovation. The six research papers address several specific research questions focusing on different aspects of IORs by using qualitative, quantitative and conceptual methods. LÄS MER