608,002 research outputs found
Controlled generation of field squeezing with cold atomic clouds coupled to a superconducting transmission line resonator
We propose an efficient method for controlled generation of field squeezing
with cold atomic clouds trapped close to a superconducting transmission line
resonator. It is shown that, based on the coherent strong magnetic coupling
between the collective atomic spins and microwave fields in the transmission
line resonator, two-mode or single mode field squeezed states can be generated
through coherent control on the dynamics of the system. The degree of squeezing
and preparing time can be directly controlled through tuning the external
classical fields. This protocol may offer a promising platform for implementing
scalable on-chip quantum information processing with continuous variables.Comment: accepted by Phys. Rev.
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PGGA: A predictable and grouped genetic algorithm for job scheduling
This paper presents a predictable and grouped genetic algorithm (PGGA) for job scheduling. The novelty of the PGGA is twofold: (1) a job workload estimation algorithm is designed to estimate a job workload based on its historical execution records, (2) the divisible load theory (DLT) is employed to predict an optimal fitness value by which the PGGA speeds up the convergence process in searching a large scheduling space. Comparison with traditional scheduling methods such as first-come-first-serve (FCFS) and random scheduling, heuristics such as a typical genetic algorithm, Min-Min and Max-Min indicates that the PGGA is more effective and efficient in finding optimal scheduling solutions
Asteroseismic constraints on the OPAL opacity interpolation
The frequency difference between a model used only two-point interpolation of
opacity and a model used piecewise linear interpolation of opacity is of the
order of several microHertz at a certain stage, which is almost 10 times worse
than the observational precision of p-modes of solar-like stars. Therefore, the
two-point interpolation of opacity is unsuitable in modelling of solar-like
stars with element diffusion.Comment: 2 pages, 1 figure; to appear in the Proceedings of IAU Symp. 252 "The
Art of Modelling Stars in the 21st Century", Sanya, China, 6th-11th April
2008, (L. Deng, K.L. Chan & C. Chiosi, eds.
Review Of Commercialization And Agricultural Development: Central And Eastern China, 1870-1937 By L. Brandt
Review Of Encountering Chinese Networks: Western, Japanese, And Chinese Corporations In China, 1880-1937 By S. Cochran
Review Of The Making Of A Hinterland: State, Society, And Economy In Inland North China, 1853-1937 By K. Pomeranz
Review Of The Thistle And The Jade: A Celebration Of 150 Years Of Jardine, Matheson And Co. Edited By M. Keswick
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