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Yang, "Sensor positioning for activity recognition using wearable accelerometers," Biomedical Circuits and Systems, IEEE Transactions on, vol. 5, pp. 320-329, 2011

(In Chinese) [2] Ji Tao, Chen Yang, Xu Gang.

Advances in Water Science: Forum Vol.15 (2004), p. 123-128 (in Chinese) [2] Yan Denghua, Wang Hao and Yang Shuyuan.

[9] Liu X, Yang Y, Li W, Li C, Duan D, Tadano T (2005) Interactive effects of sodium chloride and nitrogen on growth and ion accumulation of a halophyte.

[7] Hongjun Yang, Peng Lu, Shihuan Tan.

Yang and C.T.

Tian, S.
Yang, D.

The atom transfer radical polymerization is successful for synthesizing the topological type PMMA with α-D-glucose/2-bromoisobutyryl bromide as initiating system, CuBr as catalyzer and PMDETA as ligand. PMMA synthesized by such method has a controllable relative molecular mass and structure. The narrow distribution of relative molecular mass really achieves the controllable activity of ATRP.

Ultrasonic inspection is the most successful non-destructive testing technique for detection of flaws in engineering materials. Generally, discrete wavelet transform (DWT) is widely used to extract features for ultrasonic flaw signal. Directly taking the DWT coefficients as input vectors for training classifier, however, may result in computation complexity or even poor classification performanc. We propose a weighted linear discriminant analysis (WLDA) method to address the problem. In this study, DWT is first applied for the time-frequency analysis of ultrasonic flaw signals, and the wavelet coefficients are extracted as the initial features. After that, the proposed WLDA, which can effectively estimate the within-class and the between-class scatter through calculating similarity based weighting function, is used to reduce the dimension of original features. Finally, the features in new lower dimensional space are taken for flaw classification. Experimental results show that compared with the original and state of art linear discriminant analysis methods, WLDA is helpful for improving classification performance.

Due to the large number of distributed power supply random connected to power grid, it has severely influenced on power quality of the grid. In the storage battery directly on the basis of the DC bus, adopting the method of hybrid energy storage system makes a research on the output characteristics of photovoltaic array and the charging and discharging of battery and super capacitor. Research results show that the hybrid energy storage system can take advantage of the DC/DC converter to coordinate photovoltaic array, energy storage unit and the energy flows among load, also that the stability of DC bus voltage can be ensured by the system switch from the different work patterns.