41 research outputs found

    Mindre fremmøde, større aktivitet, højere kvalitet

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    Første gang publiceret i UNEV nr. 6: Organisering af e-læring, oktober - december 2005, red. Jørgen Gomme, Birgitte heiberg, Jens Dørup og Ambrosia Hansen. ISSN 1603-5518.- introduktion af IT-støttede undervisningsformer i en masteruddannelse. Baggrund, teori og praktiske erfaringer.Nærværende artikel redegør for et udviklingsprojekt, hvor model og værktøjskasse er anvendt i praksis: Vi har analyseret og foreslået ændringer til en uddannelse, og uddannelsens studieleder og undervisere har implementeret og evalueret.Underviserne og studielederen har haft lejlighed til at se artiklen igennem - men perspektivet i artiklen er vores, og det samme gælder ansvaret for fremstillingen af de praktiske erfaringer, herunder tolkningen af evalueringsresultaterne

    Density functional theory based screening of ternary alkali-transition metal borohydrides: A computational material design project

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    Density functional theory based screening of ternary alkali-transition metal borohydrides: A computational material design project

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    The dissociation of molecules, even the most simple hydrogen molecule, cannot be described accurately within density functional theory because none of the currently available functionals accounts for strong on-site correlation. This problem led to a discussion of properties that the local Kohn-Sham potential has to satisfy in order to correctly describe strongly correlated systems. We derive an analytic expression for the nontrivial form of the Kohn-Sham potential in between the two fragments for the dissociation of a single bond. We show that the numerical calculations for a one-dimensional two-electron model system indeed approach and reach this limit. It is shown that the functional form of the potential is universal, i.e., independent of the details of the two fragments.We acknowledge funding by the Spanish MEC (Grant No. FIS2007-65702-C02-01), “Grupos Consolidados UPV/EHU del Gobierno Vasco” (Grant No. IT-319-07), and the European Community through e-I3 ETSF project (Grant Agreement No. 211956).Peer reviewe
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