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The influence of compositional fluctuations of N in GaInNAs Quantum Well (QW) lasers has been studied using a rate equation model. These fluctuations can be treated as Quantum-Dot (QD)-like fluctuations at the Conduction Band Edge (CBE). The gain model includes the QW material gain derived using a Band Anti-Crossing (BAC) model and includes QD fluctuations in the conduction band. For low N, (N ∼ 1%),...
In this paper, we propose a discriminative latent model to extract Chinese multiword expressions from corpus resources as part of a larger research effort to improve machine translation(MT) system such as Super Function based Machine Translation(SFBMT). For existing MT systems, especially Statistic based MT(SBMT), the issue of multiword expressions (MWEs) detection and accurate correspondence from...
This paper focuses in modelling of inhomogeneous broadening of GaInAs quantum dots based on Sugawara model which treats an idealized quantum dot with confined level coupled with wetting layer level. Model is derived by solving set of rate equations which includes the inhomogeneous distribution of electrons, multimode photon density, material grain and temperature dependence. The device is pumped with...
In this paper, a support vector regression (SVR) based method is proposed to detect a geometric feature such as line equation, corner point and angle degree between straight lines in an image. Digital image with geometric figures is collected and transmitted into computer. Median filter is used to reduce noise in the original gray scale image. Then image contour with single-pixel width is obtained...
In Chinese language processing, new words are particularly problematic. It is impossible to get a complete dictionary as new words can always be created. We proposed a unified dual-chain unequal-state CRF model to detect new words together with their part-of-speech in Chinese texts regardless of the word types such as compound words, abbreviation, person names, etc. The dual-chain unequal-state CRF...
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