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Electronic structure and transport properties of atomic NiO spinvalves
Ab-initio quantum transport calculations show that short NiO chains suspended
in Ni nanocontacts present a very strong spin-polarization of the conductance.
The generalized gradient approximation we use here predicts a similiar
polarization of the conductance as the one previously computed with non-local
exchange, confirming the robustness of the result. Their use as nanoscopic
spinvalves is proposed.Comment: 2 pages, 1 figure; accepted in JMMM (Proceedings of ICM'06, Kyoto
Selecting a Small Set of Optimal Gestures from an Extensive Lexicon
Finding the best set of gestures to use for a given computer recognition
problem is an essential part of optimizing the recognition performance while
being mindful to those who may articulate the gestures. An objective function,
called the ellipsoidal distance ratio metric (EDRM), for determining the best
gestures from a larger lexicon library is presented, along with a numerical
method for incorporating subjective preferences. In particular, we demonstrate
an efficient algorithm that chooses the best gestures from a lexicon of
gestures where typically using a weighting of both subjective and
objective measures.Comment: 27 pages, 7 figure
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