EMA podcast transcript: achieving benefits through electronic management of assessment

The text transcript for a Jisc podcast on achieving benefits through electronic management of assessment (EMA).

EMA podcast transcript: electronic management of assessment processes and systems

The text transcript for a Jisc podcast on the business processes and systems around the electronic management of assessment (EMA). One of a series of podcasts on EMA.

EMA podcast: benefits of electronic management of assessment

Podcast from interviews with universities discussing the benefits of electronic management of assessment.

EMA podcast: using Jisc electronic management of assessment resources

A podcast including interviews from diffferent universities on how they've used Jisc EMA resources.

EMA podcast: improving processes through the electronic management of assessment

An audio podcast involving interviews from universities talking about electronic management of assessment business processes and systems.

Long-lived oscillatory incoherent electron dynamics in molecules: trans-polyacetylene oligomers

We identify an intriguing feature of the electron-vibrational dynamics of molecular systems via a computational examination of trans-polyacetylene oligomers. Here, via the vibronic interactions, the decay of an electron in the conduction band resonantly excites an electron in the valence band, and vice versa, leading to oscillatory exchange of electronic population between two distinct electronic states that lives for up to tens of picoseconds. The oscillatory structure is reminiscent of beating patterns between quantum states and is strongly suggestive of the presence of long-lived molecular electronic coherence. Significantly, however, a detailed analysis of the electronic coherence properties shows that the oscillatory structure arises from a purely incoherent process. These results were obtained by propagating the coupled dynamics of electronic and vibrational degrees of freedom in a mixed quantum-classical study of the Su-Schrieffer-Heeger Hamiltonian for polyacetylene. The incoherent process is shown to occur between degenerate electronic states with distinct electronic configurations that are indirectly coupled via a third auxiliary state by vibronic interactions. A discussion of how to construct electronic superposition states in molecules that are truly robust to decoherence is also presented

Electronic spectroscopy of propofol, propofol homomers ad their hydratated clusters

538 p.