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Chongqing, China

Yangtze Normal University is a full-time, comprehensive university under the administration of the Chongqing Municipal Government of the Peoples Republic of China. The campus is located in Fuling District, at the conjunction of the Yangtze and Wu Rivers, the historic capital of the ancient Ba Tribe. It is the only teachers college in the ecological and economic zone of the Three Gorges Reservoir Area and the minority area in South-East Chongqing. Wikipedia.

Wang X.,Yangtze Normal University
International Journal of Advancements in Computing Technology | Year: 2012

The Key frame extraction is fundamental of processes in CBVR (content based on video retrieval). This paper proposed an improved key frame extraction algorithm based on the lens for compressed video sequence, which was based on different formulas comparing discrete cosine transform (DC) direct current (DC) coefficients over the I-frames in MPEG video stream, and for which only minimal coding was needed In particular, introduced the importance difference of DC coefficients in one image frame into the process of similarity measure, special analysis the I-frame-based adaptive key frame extraction algorithm. The experiments show that the algorithm is significantly improved than the traditional one about the two indicators of the recall and retrieval time, especially for the more dramatic news documentaries, films and other local sports video sequences.

Fan H.,Yangtze Normal University | Zhong Y.,Chongqing University
Journal of Computational Information Systems | Year: 2012

As an important concept of rough set theory, an attribute reduction is a subset of attributes that are jointly sufficient and individually necessary for preserving a particular property of the given information table. In order to acquire minimal attribute reduction, we propose a wasp swarm optimization algorithm for attribute reduction based on rough set and the significance of feature. The significance of feature is constructed based on the mutual information between selected conditional attributes and decisional attributes. The algorithm dynamically calculates heuristic information based on the significance of feature to guide search. Experimental are carried out on some standard UCI datasets. The results demonstrate that, in terms of solution quality and computational effort, proposed algorithm can get better results than other intelligent swarm algorithms for attribute reduction. 1553-9105/Copyright © 2012 Binary Information Press.

Shi W.,Southwest University | Shi W.,Yangtze Normal University | Wang Q.,Southwest University | Long Y.,Southwest University | And 4 more authors.
Chemical Communications | Year: 2011

Carbon nanodots (C-Dots) were found to possess intrinsic peroxidase-like activity, and could catalytically oxidize 3,3′,5,5′- tetramethylbenzidine (TMB) by H2O2 to produce a colour reaction. This offers a simple, sensitive and selective colorimetric method for glucose determination in serum. © 2011 The Royal Society of Chemistry.

Chen Y.,Southwest University | Cao H.,Southwest University | Shi W.,Yangtze Normal University | Liu H.,CAS Chongqing Institute of Green and Intelligent Technology | Huang Y.,Southwest University
Chemical Communications | Year: 2013

This article presents a new enzyme-mimic activity of non-noble metal-based bimetallic Fe-Co NPs. This type of enzyme-mimic exhibits much higher affinity to H2O2 over other NPs-based peroxidase mimetics by at least one order of magnitude due to the synergistic effects between the two metals. This journal is © The Royal Society of Chemistry 2013.

Huang J.-B.,Yangtze Normal University
International Journal of Advancements in Computing Technology | Year: 2012

Genetic Algorithm is a reference biological and genetic mechanism of natural selection and has highly parallel, randomized, adaptive search algorithm for global optimization probability. Performance of genetic algorithms is dramatically influence by algorithmic settings. To improve the research performance of genetic algorithm and avoid its limitation of local optimization, a new adaptive genetic algorithm which is used in stereo image matching for function optimization, and three commonly used benchmark functions have been optimized. Compared the results of simulation with traditional image, are compared by simulation and match with the traditional image that this adaptive mechanism does improve the search performance of the algorithm, the accuracy of image matching, and achieved good results.

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