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This paper proposes a way of generating polariton solitons (PSs) in semiconductor microcavity using Stark effect as the trigger mechanism. A Stark pulse performing as the writing beam is used to excite non-resonant fluctuations of polariton, which finally evolves into bright PSs. It is found that polarization of the generated PS is independent on the writing beam, and a branch of PS solutions versus...
In the last few decades research efforts were conducted to grasp good understanding about the origin of equiaxed and columnar grains formed during solidification. The morphological evolutions such as globular/cellular to dendritic or columnar-to-equiaxed transition were generally studied. Correspondingly, some empirical models were introduced. Nevertheless, no sufficient attention was paid to incorporation...
The object of this study is to investigate the human evacuation behavior and smoke behavior of a fire in an underground emporium. A practical survey about the occupants characteristics of number, age and gender was carried out. Then, different fire locations and occupants load in the fourth fire protection zone of the underground emporium were conducted numerically by using a CFD model FDS+Evac. And...
A computationally efficient approach to stochastic ARMA modeling of wide-sense stationary signals is proposed. The discrete estimator minimizes a modified version of the likelihood function by using exclusively linear techniques and circumventing the high computational complexity of the Maximum Likelihood (ML) method. The proposed approach is thus easy to implement, requires no second order statistical...
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