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40 results on '"Zhao, Qianjin"'

3. A Hybrid of Background Scatter and Foreground Contour Completeness for Salient Object Detection

Author

Xia, Chenxing, Zhao, Qianjin, Zhang, Shunxiang, Gao, Xiuju, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Abawajy, Jemal H., editor, Choo, Kim-Kwang Raymond, editor, Islam, Rafiqul, editor, Xu, Zheng, editor, and Atiquzzaman, Mohammed, editor

Published
2020
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31. Testing the equality of two double-parameter exponential distributions via overlap coefficient.

Author

Zhou, Yuejin, Chen, Ting, Zhao, Qianjin, and Jiang, Tao

Subjects
MATHEMATICAL equivalence, MAXIMUM likelihood statistics
Abstract

In this paper, we investigate the problem of testing the equality of two double-parameter exponential distributions by using overlap coefficient. So the original testing problem is reduced to testing whether overlap coefficient is one or not, which is presented by Matusitat's, Morisita's, and Weitzmann's measures, respectively. For the three overlap coefficient measures, their estimators are proposed and the corresponding statistical properties are also derived. Simulation studies are conducted to assess the performance of our proposed estimators. Finally, a real example is involved to illustrate their application. [ABSTRACT FROM AUTHOR]

Published
2020
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33. Si-containing precursors for Si-based anode materials of Li-ion batteries: A review

Author

Zhang, Lei, Liu, Xiaoxiao, Zhao, Qianjin, Dou, Shi Xue, Liu, Hua-Kun, Huang, Yunhui, Hu, Xianluo, Zhang, Lei, Liu, Xiaoxiao, Zhao, Qianjin, Dou, Shi Xue, Liu, Hua-Kun, Huang, Yunhui, and Hu, Xianluo

Abstract

Lithium-ion batteries with high energy density are in demand for consumer electronics, electric vehicles, and grid-scale stationary energy storage. Si is one of the most promising anode materials due to its extremely high specific capacity. However, the full application of Si-based anode materials is limited by poor cycle life and rate capability resulted from low ionic/electronic conductivity and large volume change over cycling. In recent years, great progress has been made in improving the performance of Si anodes by employing nanotechnology. The preparation methods are essentially important, in which the precursors used are crucial to design and control the microstructure for the Si-based materials. In this review, we provide comprehensive summary and comment on different Si-containing precursors for preparation of nanosized Si-based anode materials and focus on the corresponding electrochemical performances in lithium-ion batteries. Bulk sized silicon, silicon wafer and silicon microparticles are generally used as starting materials to synthesize porous or nanosized silicon, and the routes for the synthesis are rather mature and commercially available. Silica is also commonly used to form silicon by conversion through a facile magnesiothermic reduction. Silica derivation from natural resources, especially from rice husks, is much more sustainable and lower cost than alternative methods, which attracts considerable research attention. In addition, gaseous Si-based sources like SiH4, Si2H6 and SiHxCly, liquid silicon sources like trisilane and phenylsilane and elemental silicon have successfully used to prepare nanosized or carbon-coated silicon. Further considerations on massive production possibility have also been presented.

Published
2016

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