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This paper investigates whether ownership structure has significant effects on firm performance of publicly-listed companies in China, and in what ways if it does. Then we select 1200 listed companies in Shanghai and Shenzhen Stock Exchange from 2007 to 2009 as the research samples, and analysis by structural equation model. The results from our study yield unequivocal evidence for the endogeneity...
A novel method is proposed to compute chaos threshold on dynamical systems based on the law of golden section and Lyapunov exponents from limited experimental data range. First, rough region of the system threshold is estimated by Lyapunov exponents with computation precision to be one digit after decimal dot and with a step size 0.1. Second, the exact threshold value is calculated in terms of the...
The objective of this paper is to introduce Newland Harmonic wavelets and Pincus (1991) approximate entropy are applied to extract weak cycle jumps. Because some weak vibration signals contained strong noises are very important for fault forecast. Based on harmonic wavelet mesh plot of the vibration signals, we can induce contours of the mesh map with log space, then, we offer the time-frequency profile...
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