Tianchi Yang

Learn More
A small fraction of hand–foot–mouth disease (HFMD) progression from the onset of severity to fatality may be remarkably rapid. Early recognition of children at risk of severity is critical to increase treatment effectiveness and reduce acute mortality. A frequency-matched case–control study was conducted between January 2010 and June 2011 in Ningbo to(More)
The book industry is undergoing a digital transformation enabled by the Internet and e-book technology, which offers a novel channel for delivering books to consumers who mostly purchase paper books from physical or online bookstores. We examine characteristics of audio-book models that can be successfully employed in developed countries. Then, we provide a(More)
A target position can be estimated using position information from scattered signals in the nonline-of-sight propagation environment in a single observer location system. There is always an error in the final estimated result of the position obtained using scatter signals because measurement noise is inevitable. To reduce the total error of the system, we(More)
In order to better understand the psychosocial factors involved in consumption to online music, we examine the role that two types of social networks—advising network and emotional network—play in individual consumption to digital music, especially the consumption to online music in China. Using survey data from 154 college students in 3 universities, we(More)
This paper proposes an algorithm, called circle fitting algorithm, for locating targets by using maneuverable single station in non-line-of-sight environment. This algorithm estimates the position and scattering distance of all scatters based on the circular motion character. The pseudo-target trajectory is calculated from observation results from different(More)
Mobile station position have been receiving more and more attention in recently years. Positioning via time of arrival is a kind of key technology. A simple and fast algorithm based on time of arrival technology is proposed in this paper. Through the first step estimation, we can easily get the rough value by changing the coordinate origin. And the precise(More)
  • 1