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Your search keyword '"Wu, Chuanjian"' showing total 257 results
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257 results on '"Wu, Chuanjian"'

19. Excellent microwave and magnetic properties of La-Cu substituted Ba-hexaferrites prepared by ceramic process

Author

Wu, Chuanjian, Yu, Zhong, Sun, Ke, Sokolov, Alexander S., Guo, Rongdi, Yang, Yan, Yu, Chengju, Jiang, Xiaona, Lan, Zhongwen, and Harris, Vincent G.

Subjects
Physics - Applied Physics
Abstract

We demonstrate exceptional microwave magnetic performance of crystallographycally textured barium hexaferrites prepared by conventional ceramic method. Vibrating sample magnetometer (VSM) and rectangular cavity perturbation measurements indicate that bulk Ba0.8La0.2Fe11.2Cu0.2O19 samples exhibit a strong magnetic anisotropy field Ha of 14.6kOe, the highest remanent magnetization of 3.96kGs, and the lowest ferromagnetic resonance (FMR) linewidth of 401Oe with zero applied bias field at Q-band. Broadband millimeter-wave transmittance measurements determined the complex permeability and permittivity. The remanent magnetization, anisotropy field Ha, and effective linewidth were also estimated based on Schlomann's theory of the complex permeability. These calculated values are in good agreement with the VSM and FMR measurements.

Published
2018

32. Single-ended protection scheme for three-terminal hybrid DC transmission system based on refractive coefficients.

Author

Wu, Chuanjian, Li, Kuan, Li, Chenhao, Zhang, Yan, and Zhang, Xiaodong

Abstract

Three-terminal hybrid DC transmission technology has the advantages of long-distance and large capacity, and there is no phase change failure and other problems, which is an effective means of sending out new energy bases. Correspondingly, the reliability of the existing single-ended traveling wave protection is further degraded by the unknown fault characteristics introduced by the greater variety and combination of converters and add-ons in the three-terminal hybrid DC transmission system. Therefore, a single-ended protection scheme based on the refractive coefficient is proposed. First, an expression for the refraction coefficient of a three-terminal hybrid DC system is derived. Subsequently, the variability of the refraction coefficients for different faults is analyzed. Finally, a single-ended protection scheme using the fault characteristics of the refraction coefficients is proposed and validated by simulation. The program has the advantages of theoretical clarity, reliability, and the ability to recognize near-end faults. [ABSTRACT FROM AUTHOR]

Published
2024
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33. Research on Precision Marketing of E-commerce Enterprise Based on Cluster Analysis in the Big Data Environment.

Author

Hu, Chun, Wu, Chuanjian, and Huang, Zongjie

Subjects
MARKETING effectiveness, K-means clustering, CLUSTER analysis (Statistics), TARGET marketing, MARKETING, BIG data
Abstract

With the rapid development of big data technology, e-commerce enterprises have accumulated a large amount of user data in marketing activities. How to use these data for precision marketing, improve marketing effectiveness and reduce costs has become an important issue for e-commerce enterprises. In this paper, based on the K-means algorithm of clustering analysis, the basic information of 4026 effective customers is extracted according to the four indicators of purchase times, consumption amount, browsing times and praise times, and the customers are divided into core customers, maintenance customers, development customers, potential customers, and the corresponding precision marketing strategies are given. Targeting core customers, we can provide exclusive design and customization services; Targeting development-oriented customers, we can provide them with matching suggestions and inspiration; Targeting maintenance-oriented customers, we can increase the recommendation of coupons and promotional activities; Targeting potential customers can increase their understanding of the company and products [ABSTRACT FROM AUTHOR]

Published
2024
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42. Hepatitis B virus RNAs co-opt ELAVL1 for stabilization and CRM1-dependent nuclear export

Author

Zheng, Yingcheng, primary, Wang, Mengfei, additional, Yin, Jiatong, additional, Duan, Yurong, additional, Wu, Chuanjian, additional, Xu, Zaichao, additional, Bu, Yanan, additional, Wang, Jingjing, additional, Chen, Quan, additional, Zhu, Guoguo, additional, Zhao, Kaitao, additional, Zhang, Lu, additional, Hua, Rong, additional, Xu, Yanping, additional, Hu, Xiyu, additional, Cheng, Xiaoming, additional, and Xia, Yuchen, additional

Published
2024
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