Sökning: "side group"

Visar resultat 1 - 5 av 535 avhandlingar innehållade orden side group.

  1. 1. Relativa betyg : några empiriska studier och en teoretisk genomgång i ett historiskt perspektiv

    Författare :Håkan Andersson; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Group-referenced marks; norm-referenced marks; criterion-referenced marks; marks; grades; grading; selection; employment qualifications; merits; Relativa betyg; grupprelaterade betyg; normrelaterade betyg; målrelaterade betyg; kriterierelaterade betyg; betyg; urval; anställningsmeriter; meriter;

    Sammanfattning : Denna avhandling, som i huvudsak är resultatet av ett projekt finansierat av Skolöverstyrelsen, består av fem delstudier (I-V) utförda under åren 1977-1991 samt en sammanfattande analysdel (VI). Avhandlingens syfte är att studera det unika svenska relativa betygssystemet, som infördes på försök i folkskolan i början av 1940-talet för att senare permanentas och även införas i enhets- och grundskolan samt slutligen även i gymnasiet. LÄS MER

  3. 2. Chiral Liquid Crystalline Side-Chain Polymers. Design, Synthesis and Properties

    Författare :Magnus Svensson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lateral substituent; electro-optic; ferroelectric; molar mass; polymer; side-group; thin film; polysiloxane;

    Sammanfattning : The potential use of chiral liquid crystalline materials, low molar mass as well as polymers, in technical applications has been recognized for some decades now. A number of interesting phenomena based on the spontaneous ordering of the liquid crystal forming molecules are strong reasons for the research effort in this area. LÄS MER

  4. 3. The influence of Diluents and Side Groups of the Ligands on Liquid-Liquid Extraction of Actinides and Lanthanides

    Författare :Teodora Retegan Vollmer; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Am; side group; radionuclides; liquid-liquid extraction; Eu; irradiation; diluents.;

    Sammanfattning : Fossil fuels are no longer a choice for energy production, both because of their diminishing availability and the bi-products of their combustion processes. A possibility to replace the fossil fuels would be utilization of nuclear power. No green-house gases are produced, but as any industry, it generates wastes. LÄS MER

  5. 4. Beyond the bright side : Investigating dark aspects of independent entrepreneurship, family entrepreneurship, and corporate entrepreneurship

    Författare :Mohamed A. Genedy; Lucia Naldi; Karin Hellerstedt; David Audretsch; Jönköping University; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : Entrepreneurship is often perceived as a driving force for employment, innovation, and knowledge creation and is linked to poverty alleviation and economic growth. While entrepreneurship is often seen as a pathway for economic development and societal welfare, it does not consistently deliver the expected outcomes and, in certain instances, may exacerbate poverty, impede development, and present challenges to societal well-being and equality. LÄS MER

  7. 5. Cooperation and conflict over the struggle to reproduce in harsh environments : An experimental field study on ostriches

    Författare :Julian Melgar; MEMEG; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; social; grupp; konkurrens; konflikt; fusk; värme; stress; tolerans; complexitet; variation; social; group; competition; conflict; cheating; heat; stress; tolerance; complexity; variation;

    Sammanfattning : People are used to hearing that evolution is about the survival of the fittest. Theyimagine a world full of bullies that ruthlessly fight their way to the top in the struggle for life, leaving the weak behind. But this doesn’t need be the case. LÄS MER