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Detecting depression via speech is an attractive topic in recent years. Significant correlation was found between speech pause time and depressive severity. In the present study, 92 depressed patients and 92 age-, gender- and education level-matched control participants were examined to investigate three temporal characteristics of speech: recording time (RT), phonation time (PT) and speech pause...
Package warping during SMT reflow is a seriousconcern as warpage induced interconnect failures suchas Head-in-Pillow (HiP) and Non-Wet-Open (NWO) must be controlled. In this study, the high temperature reflow dynamicwarpage characteristics of BGA packages are examinedusing a simple, controlled gap between the solder balland printed paste interconnect to simulate separation andlifting of the joint...
This paper studies fundamental housing values and housing bubbles based on Time-varying Present Value model. Using data of four typical cities in China, our results preclude the existence of housing bubbles in Tianjin and Chongqing. We further preclude the existence of explosive and intrinsic bubbles, but include that of momentum bubbles in Beijing and Shanghai, which accounts for 18.4% and 8.5% of...
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