In this paper, we give statistical analyses and simulation studies on the Lyapunov exponents estimated from noisy chaotic time series. Through the Jacobian estimation approach, the asymptotic distribution of the estimated Lyapunov exponents are studied and characterized from the observed noisy...

In this article, we used the data from the last three population censuses of China in 1982, 1990 and 2000, to study the dynamics of the sex ratio at birth and the infant mortality rate in China. In the late 1970s, China started its economic reform and implemented many family planning programs....