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author = "Yao, Y."
<< < 2 3 4 5 6 > >>

Found 569 documents, displaying page 4 of 57

Including many-body screening into self-consistent calculations: Tight-binding model studies with the Gutzwiller approximation

Author(s) : Yao, Y. X. , Wang, C. Z. , Ho, K. M.
Description : We introduce a scheme to include many-body screening processes explicitly into a set of self-consistent equations for electronic structure calculations using the Gutzwiller approximation. The method is illustrated by the application to a tight-binding model describing the strongly correlated {\gam...
Repository : arXiv
Language(s) : Undetermined

Decay characteristics of two-dimensional islands on strongly anisotropic surfaces

Author(s) : Yao, Y. , Ebert, P. , Li, M. , Zhang, Z. , Wang, E. G.
Description : This version is available at the following Publisher URL: http://prb.aps.org
Repository : JUWEL (JUelicher Wissenschaftliche Elektronische Literatur)
Language(s) : German

HEATING IN AN EXTENDED ACCRETION DISK CORONA ALONG THE Z-PATTERN IN CYG X-2

Author(s) : Schulz, Norbert S. , Huenemoerder, David P. , Ji, Li , Yao, Y. , Canizares, Claude R.
Description : We observed at very high spectral resolution the prototype Z-source Cyg X-2 twice along its entire X-ray spectral variation pattern. In this preliminary analysis, we find an extended accretion disk corona (ADC) exhibiting Lyα emissions from various H-like ions, as well as emissions from He-like ions...
Repository : DSpace@MIT - MIT's online institutional repository
Language(s) : English

Abrupt enhancement of non-centrosymmetry and appearance of the spin-triplet superconducting state in Li_2(Pd_{1-x}Pt_{x})_3B beyond x=0.8

Author(s) : Harada, S. , Zhou, J. J. , Yao, Y. G. , Inada, Y. , Zheng, Guo-qing
Description : We report synthesis, ^{195}Pt, ^{11}B and ^{7}Li NMR measurements, and first-principle band calculation for non-centrosymmetric superconductors Li_{2}(Pd_{1-x}Pt_{x})_{3}B (x=0, 0.2, 0.5, 0.8, 0.84, 0.9 and 1). For 0 \leq x \leq 0.8, the spin-lattice relaxation rate 1/T_1 shows a clear coherence p...
Repository : arXiv
Language(s) : Undetermined

Interval Structure: A Framework for Representing Uncertain Information

Author(s) : Wong, Michael S. K. M. , Wang, L. S. , Yao, Y. Y.
Description : In this paper, a unified framework for representing uncertain information based on the notion of an interval structure is proposed. It is shown that the lower and upper approximations of the rough-set model, the lower and upper bounds of incidence calculus, and the belief and plausibility function...
Repository : arXiv
Language(s) : Undetermined

A New Method to Use Chandra Data to Resolve the X-Ray Halos Around Point Sources and Its Application to Cygnus X-1

Author(s) : Yao, Y. , Zhang, S. Nan , Zhang, X. L. , Feng, Y. X.
Description : With excellent angular resolution, good energy resolution and broad energy band, the Chandra ACIS is the best instrument for studying the X-ray halos around some galactic X-ray point sources caused by the dust scattering of X-rays in the interstellar medium. However, the direct images of bright so...
Repository : arXiv
Language(s) : Undetermined

Electrical Properties of Conductive Ge Nanocrystal Thin Films Fabricated by Low Temperature In-situ Growth

Author(s) : Zhang, B. , Yao, Y. , Patterson, R. , Shrestha, S. , Green, M. A. , Conibeer, G.
Description : Thin films composed of Ge nanocrystals embedded in amorphous SiO2 matrix (Ge-NCs TFs) were prepared using a low temperature in-situ growth method. Unexpected high p-type conductivity was observed in the intrinsic Ge-NCs TFs. Unintentional doping from shallow dopants was excluded as a candidate mec...
Repository : arXiv
Language(s) : Undetermined

Structures and energetics of hydrocarbon molecules in a wide hydrogen chemical potential range

Author(s) : Yao, Y. X. , Rareshide, C. , Chan, T. L. , Wang, C. Z. , Ho, K. M.
Description : We report a collection of lowest-energy structures of hydrocarbon molecules C_{m}H_{n} (m=1-18; n=0-2m+2). The structures are examined within a wide hydrogen chemical potential range. The genetic algorithm combined with Brenner's empirical potential is applied for the search. The resultant low-ene...
Repository : arXiv
Language(s) : Undetermined

A comparative study of the electronic and magnetic properties of BaFe_2As_2 and BaMn_2As_2 using the Gutzwiller approximation

Author(s) : Yao, Y. X. , Schmalian, J. , Wang, C. Z. , Ho, K. M. , Kotliar, G.
Description : To elucidate the role played by the transition metal ion in the pnictide materials, we compare the electronic and magnetic properties of BaFe_{2}As_{2} with BaMn_{2}As_{2}. To this end we employ the LDA+Gutzwiller method to analyze the mass renormalizations and the size of the ordered magnetic mom...
Repository : arXiv
Language(s) : Undetermined

Combining flat and structured representations for fingerprint classification with recursive neural networks and support vector machines

Author(s) : Yao, Y , Marcialis, GL , Pontil, M , Frasconi, P , Roli, F
Description : We present new fingerprint classification algorithms based on two machine teaming approaches: support vector machines (SVMs) and recursive neural networks (RNNs). RNNs are trained on a structured representation of the fingerprint image. They are also used to extract a set of distributed features of ...
Repository : UCL Eprints
Language(s) : Undetermined
<< < 2 3 4 5 6 > >>

Found 569 documents, displaying page 4 of 57