Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Levin, George"'
We consider heat transfer between two thermal reservoirs mediated by a quantum system using the generalized quantum Langevin equation. The thermal reservoirs are treated as ensembles of oscillators within the framework of the Drude-Ullersma model. Ge
Externí odkaz:
http://arxiv.org/abs/1208.1438
Autor:
Levin, George, Loyka, Sergey
An information-theoretic analysis of a multi-keyhole channel, which includes a number of statistically independent keyholes with possibly different correlation matrices, is given. When the number of keyholes or/and the number of Tx/Rx antennas is lar
Externí odkaz:
http://arxiv.org/abs/0810.5770
Study of AC losses in superconducting wires and tapes is usually restricted by consideration of applied sinusoidal currents and/or magnetic fields. However, currents in electric power systems contain a wide variety of harmonics. The currents become s
Externí odkaz:
http://arxiv.org/abs/0809.1286
We will discuss how stability and speed of normal zone propagation in YBCO-coated conductors is affected by interfacial resistance between the superconducting film and the stabilizer. Our numerical simulation has shown that the increased interfacial
Externí odkaz:
http://arxiv.org/abs/0808.3409
Autor:
Levin, George A., Barnes, Paul N.
We consider the distribution of an electric field in YBCO-coated conductors for a situation in which the DC transport current is forced into the copper stabilizer due to a weak link -- a section of the superconducting film with a critical current les
Externí odkaz:
http://arxiv.org/abs/0706.4040
Autor:
Loyka, Sergey, Levin, George
Diversity-multiplexing tradeoff (DMT) presents a compact framework to compare various MIMO systems and channels in terms of the two main advantages they provide (i.e. high data rate and/or low error rate). This tradeoff was characterized asymptotical
Externí odkaz:
http://arxiv.org/abs/0705.1336
A two-dimensional model is introduced that describes current sharing between the superconducting and normal metal layers in configuration typical of YBCO-coated conductors. The model is used to compare the effectiveness of surround stabilizer and mor
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703193
Autor:
Levin, George A.
A novel phenomenological approach to the analysis of the conductivities of incoherent layered crystals is presented. It is based on the fundamental relationship between the resistive anisotropy $\sigma_{ab}/\sigma_c$ and the ratio of the phase cohere
Externí odkaz:
http://arxiv.org/abs/cond-mat/0408213
Over the last decade advances in high temperature superconducting (HTS) materials have generated a renewed optimism in the use of this technology in future high-power applications including motors, generators, and power transmission. The most promisi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0406311
Autor:
Levin, George B.
Thesis (Ph. D.)--California Institute of Technology, 1974. UM #74-21,599.
Title from home page. Viewed 01/15/2010. Includes bibliographical references.
Title from home page. Viewed 01/15/2010. Includes bibliographical references.
Externí odkaz:
http://resolver.caltech.edu/CaltechTHESIS:11052009-154826608