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Chengdu, China

Wang C.H.,Chengdu Textile College
Applied Mechanics and Materials | Year: 2014

Moving target detection and tracking in complex background is the key technology in the field of computer vision, which has become one of the focus researches for many scholars at home and abroad. Many applications, such as robot navigation, video tracking, are closely related with the moving object detection and tracking in complex background. In this paper, we improve the traditional stochastic model and target matching algorithm, combining with the feature optical flow method, to detect and track moving target detection in complex scene, and get online modified CRF model. It provides theoretical support and guidance technology for future research. © (2014) Trans Tech Publications, Switzerland.


Zeng C.,Yulin Normal College | Hu Y.,Chengdu Textile College | Luo J.,Yulin Normal College
Microchimica Acta | Year: 2012

We have developed a simple and effective method for hollow fiber liquid-phase microextraction of cadmium. It is based on the use of a room temperature ionic liquid (RTIL) and was coupled to thermospray flame furnace AAS. The RTIL was placed in the pores of a polypropylene hollow fiber (acting as a liquid membrane) and also used as the acceptor solution. Ammonium pyrrolidinedithiocarbamate (APDC) was used as the chelating agent. The effects of the concentration of APDC, the pH of samples, stirring rates, extraction time, and potential interferences were optimized to result in a detection limit of 9 ng L -1 and an enrichment factor of 90. The relative standard deviation is 4. 7% (at 0. 5 ng mL -1, for n = 5). The method was successfully applied to the determination of cadmium. © 2011 Springer-Verlag.


Yuan X.,University of Electronic Science and Technology of China | Lan Y.,Chengdu Textile College | Han Y.,University of Electronic Science and Technology of China | Yan Y.,University of Electronic Science and Technology of China
Physics of Plasmas | Year: 2012

The fully numerical nonlinear theory for a gyrotron with a special cross-section interaction cavity has been developed in this paper. In this theory, the analytical solution to different modes in the special cross-section interaction cavity is replaced by the numerical solution based on electromagnetic simulation results. A 0.4 THz third harmonic gyrotron with an azimuthally corrugated interaction cavity has been investigated by using this theory and simulation results show that this approach has a significant advantage of developing high harmonic terahertz gyrotrons. © 2012 American Institute of Physics.


Li J.,Chengdu Textile College
International Journal of Applied Environmental Sciences | Year: 2013

In order to know and analyse the undergraduates' physical training situation, this paper has collected environmental factors influencing undergraduates physical exercise behavior, and summarized environment influence on undergraduates physical exercise behavior by methods of questionnaire survey and mathematical statistics. The result shows that climate and sunlight occupy the major percentage of 57.1%, which determine the situation of undergraduates' physical training to a certain extent. Undergraduates' demand of environment influences their training enthusiasm. Suitable temperature takes the largest percentage of 30.2%. © Research India Publications.


Yuan X.,University of Electronic Science and Technology of China | Lan Y.,Chengdu Textile College | Ma C.,University of Electronic Science and Technology of China | Han Y.,University of Electronic Science and Technology of China | Yan Y.,University of Electronic Science and Technology of China
Physics of Plasmas | Year: 2011

A theoretical study on a 0.6 THz third harmonic TE37 mode gyrotron oscillator is reported in this paper in order to develop a compact, reliable, and high power terahertz radiation source. An output power of 4 kW can be generated in the TE37 mode (0.6 THz) at a resonant magnetic field of 7.86 T by the gyrotron oscillator operating at 55 kV2 A with an electron beam radius of 0.32 mm. A magnetron injection gun (MIG) with high compression ratio has been designed. The simulation results of MIG show that the velocity ratio α is 1.37, and the perpendicular velocity spread and parallel velocity spread are 6.1% and 8.9%, respectively. © 2011 American Institute of Physics.

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