Controlling single-photon transport in a one-dimensional resonator waveguide can be realized by the interatomic dipole–dipole interaction (DDI). Our numerical results show that the effects of the DDI act as that of a positive detuning. Because of the DDI, the period of the transmission spectrum changes, and its amplitude increases for stronger DDI intensity. We also discuss the influences of the DDI on the transport in low-energy and high-energy regimes. Besides, a cooperation dissipation, induced by the two atoms coupling to a common reservoir, can lead to the increase of the atomic total decay rates and the decrease of the reflection amplitude of the incident photon.
To overcome traffic congestion problem and driving safety issues on highway, automatic lane keeping control of vehicles has become an attractive area of research. In this paper, an adaptive lane keeping control scheme for vehicles is proposed. An estimator for unknown curvatures of target lanes is developed and a method to design ideal transient responses is proposed. Finally, an adaptive steering controller to achieve ideal responses is developed. Lane keeping performance can be easily improved by setting only one design parameter and unnecessary high frequency vibration is hard to occur in the steering control input.
The electromagnetic properties of the material have been paid much attention as time goes by. The electronic large-scale material simulation is always a big problem. Parallel processing simulation codes is a good choice and a new method is proposed to simulate only one quarter of the structure and finally a small structure patch antenna with wide material is introduced to validate the method.
This article proposes a surface reconstruction method by photometric stereovision based on Oren-Nayar’s model. The classical photometric stereovision reconstructs the surface by the exploitation of Lambert’s model. However Lambert’s model does not take into account the complex geometric and radiometric phenomena such as masking, shadowing and inter-reflections between micro-facets on the surface. Thus this article will improve the photometric stereovision by using Oren-Nayar’s model instead of Lambert’s model. The photometric stereovision based on Oren-Nayar’s model will calculate respectively the energies attenuated by the phenomena of masking, shadowing and the energies produced by the phenomenon of inter-reflections. At last, the surface reconstruction experiments show that the result obtained by this method is more precise than the one obtained by classical photometric stereovision.
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