نتایج جستجو برای: buttiker formalism
تعداد نتایج: 35516 فیلتر نتایج به سال:
List of publications, pre-prints and works in progress 91 Acknowledgements 93 2 Summary / Résumé Edge states are 1-dimensional transport channels, emerging in quantum wells in the integer Quantum Hall regime, with remarkable properties of chirality and quantum coherence. In this thesis we present the idea of manipulating electronic currents mixed over two co-propagating edge channels, and discu...
This tutorial will describe the use of a factored probabilistic sequence model for parsing speech and text using a bounded store of three to four incomplete constituents over time, in line with recent estimates of human shortterm working memory capacity. This formulation uses a grammar transform to minimize memory usage during parsing. Incremental operations on incomplete constituents in this t...
The theory and practice of polytypic programming is intimately connected with the initial algebra semantics of datatypes. This is both a blessing and a curse. It is a blessing because the underlying theory is beautiful and well developed. It is a curse because the initial algebra semantics is restricted to so-called regular datatypes. Recent work by R. Bird and L. Meertens (1998) on the semanti...
Enhanced Production of Cyclosporin A Abstract The effect of a second carbon source and amino acids on the production of cylcosporin A (CyA) in a medium optimized by one factor at a time and orthogonal array method was studied. The one factor at-a-time method was adopted to investigate the effects of medium components (i.e. carbon, and nitrogen) and environmental factors (i.e. initial pH) on bio...
Hamiltonian mechanics of field theory can be formulated in a generally covariant and background independent manner over a finite dimensional extended configuration space. The physical symplectic structure of the theory can then be defined over a space G of three-dimensional surfaces without boundary, in the extended configuration space. These surfaces provide a preferred over-coordinatization o...
the electronic absorption spectral line shape of a diatomic molecule with harmonic potential curves is calculated using the time correlation function formalism. both the equilibrium shift and the frequency shift of the two linking electronic states ate taken into account. the spectrum is also calculated using the cumulated expansion which is related to the correlation function of the time-depen...
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