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检索条件"机构=Physics Department and Program in Applied and Computational Mathematics"
3218 条 记 录,以下是2971-2980 订阅
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Influence of Au segregation on the magnetic anisotropy of Fe/Cu 3Au(0 0 1)
Influence of Au segregation on the magnetic anisotropy of Fe...
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作者: Gallego, S. Szunyogh, L. Muńoz, M.C. Weinberger, P. 28049 Cantoblanco Madrid Spain Department of Theoretical Physics and Center for Applied Mathematics and Computational Physics Budapest University of Technology and Economics Budafokiút. 8 Budapest 1521 Hungary Center for Computational Materials Science TU Vienna Getreidemarkt 9/134 A-1060 Vienna Austria
We present a first-principles study of the magnetic anisotropy of ultrathin Fe films on Cu3Au (0 0 1), to investigate the origin of the magnetic reorientation transition observed experimentally. Our results indicate a... 详细信息
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Time-frequency and time-scale canonical representations of doubly spread channels  12
Time-frequency and time-scale canonical representations of d...
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12th European Signal Processing Conference, EUSIPCO 2004
作者: Balan, Radu Vincent Poor, H. Rickard, Scott Verdú, Sergio Program in Applied and Computational Mathematics Princeton University PrincetonNJ United States Siemens Corporate Research PrincetonNJ United States Electronic and Electrical Engineering Department University College Dublin Ireland
A general technique for the generation of canonical channel models and demonstrate the application of the technique to time-frequency and time-scale integral kernel operators is developed. As an example, the derivatio... 详细信息
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Self-Concentration and Large-Scale Coherence in Bacterial Dynamics
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Physical Review Letters 2004年 第9期93卷 098103-098103页
作者: Christopher Dombrowski Luis Cisneros Sunita Chatkaew Raymond E. Goldstein John O. Kessler Department of Physics University of Arizona Tucson Arizona 85721 USA Program in Applied Mathematics University of Arizona Tucson Arizona 85721 USA
Suspensions of aerobic bacteria often develop flows from the interplay of chemotaxis and buoyancy. We find in sessile drops that flows related to those in the Boycott effect of sedimentation carry bioconvective plumes... 详细信息
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Sigma-delta quantization and finite frames
Sigma-delta quantization and finite frames
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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
作者: J.J. Benedetto O. Yilmaz A.M. Powell Department of Mathematics University of Maryland College Park MD USA Program in Applied and Computational Mathematics Princeton University Princeton NJ USA
It is shown that sigma-delta (/spl Sigma//spl Delta/) algorithms can be used effectively to quantize finite frame expansions for R/sup d/. Error estimates for various quantized frame expansions are derived, and, in pa... 详细信息
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Eulerian method for computing multivalued solutions of the Euler-Poisson equations and applications to wave breaking in klystrons
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Physical Review E 2004年 第1期70卷 016502-016502页
作者: Xiantao Li John G. Wöhlbier Shi Jin John H. Booske The Program in Applied and Computational Mathematics Princeton University Princeton New Jersey 08544 USA Department of Electrical and Computer Engineering University of Wisconsin Madison Wisconsin 53706 USA Department of Mathematics University of Wisconsin Madison Wisconsin 53706 USA
We provide methods of computing multivalued solutions to the Euler-Poisson system and test them in the context of a klystron amplifier. An Eulerian formulation capable of computing multivalued solutions is derived fro... 详细信息
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Alternating Direction Finite Element Method for a Class of Moving Boundary Problems
Lecture Notes in Computer Science (including subseries Lectu...
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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2004年 3314卷 44-50页
作者: Liu, Xu-Zheng Cui, Xia Yong, Jun-Hai Sun, Jia-Guang Department of Computer Science and Technology Tsinghua University Beijing 100084 China Laboratory of Computational Physics Institute of Applied Physics Computational Mathematics Beijing 100088 China School of Software Tsinghua University Beijing 100084 China
An alternating direction finite element scheme for a class of moving boundary problems is studied. Using coordinate transformations of the spatial variants, a new domain independent of the time is obtained and an ADFE... 详细信息
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Quasi-static and impact tests on pre-cracked tubular beams
Quasi-static and impact tests on pre-cracked tubular beams
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作者: Chen, F.L. Yu, T.X. Lai, H.C. Poon, K.Y. Institute of Applied Physics and Computational Mathematics P. O. Box 8009-11 Beijing 100088 China Department of Mechanical Engineering Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong
This paper examines how pre-cracks existed on tubular cantilever beams alter their mechanical behaviour. From both quasi-static and impact tests with over 70 specimens, it has been revealed that pre-cracks make the do... 详细信息
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Nonlinear Evolution of the ablative Rayleigh-Taylor instability
Nonlinear Evolution of the ablative Rayleigh-Taylor instabil...
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第三次非线性等离子体国际研讨会
作者: X. T. He Wenhua Ye Institute of Applied Physics and Computational Mathematics P. O. Box 8009 Beijing 100088 Department of physics Zhejiang UniversityHangzhou 310027
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Unusually Dense Crystal Packings of Ellipsoids
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Physical Review Letters 2004年 第25期92卷 255506-255506页
作者: Aleksandar Donev Frank H. Stillinger P. M. Chaikin Salvatore Torquato Program in Applied and Computational Mathematics Princeton University Princeton New Jersey 08544 USA Materials Institute Princeton New Jersey 08544 USA Department of Chemistry Princeton University Princeton New Jersey 08544 USA Department of Physics Princeton University Princeton New Jersey 08544 USA
In this Letter, we report on the densest-known packings of congruent ellipsoids. The family of new packings consists of crystal arrangements of spheroids with a wide range of aspect ratios, and with density φ always ... 详细信息
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Ab initio determination of Kerr angles in Cu4Ni8CunNi9∕Cu(100) (n=2–10)
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Physical Review B 2004年 第21期70卷 214417-214417页
作者: I. Reichl R. Hammerling A. Vernes P. Weinberger C. Sommers L. Szunyogh Center for Computational Material Science Vienna University of Technology Getreidemarkt 9/134 A-1060 Vienna Austria and Department of Theoretical Physics and Center for Applied Mathematics and Computational Physics Budapest University of Technology and Economics Budafoki út 8 H-1521 Budapest Hungary
Calculated polar magneto-optic Kerr rotation and ellipticity angles are presented for the system Cu4Ni8CunNi9∕Cu(100), n=2,…,10. Contrary to the common belief, the Kerr signals are found to be not directly proportio...
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