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BACKGROUND Epidemiologic studies on mild cognitive impairment (MCI) are limited in China. METHODS Using a multistage cluster sampling design, a total of 10,276 community residents (6096 urban, 4180 rural) aged 65 years or older were evaluated and diagnosed with normal cognition, MCI, or dementia. MCI was further categorized by imaging into MCI caused by(More)
BACKGROUND The diagnosis of pleural tuberculosis (TB) remains to be difficult. Interferon-gamma release assay (IGRA) is a promising method for diagnosing TB in low TB burden countries. The release of interferon-gamma (IFN-γ) by T lymphocytes increases at a localized site of infection with Mycobacterium tuberculosis antigen. This study aimed to examine the(More)
Background. Meniere's disease is characterized by refractory dizziness and hearing disturbance. We aimed to investigate the efficacy and tolerance of Diaoshi Jifa, a Chinese hand skill for treating dizziness in Meniere's disease. Methods. An open-labeled, randomized, controlled intervention trial was conducted. Twenty-seven patients diagnosed with Meniere's(More)
This paper evaluates the first 15 months of the Ozone Mapping and Profiler Suite (OMPS) Sensor Data Record (SDR) acquired by the nadir sensors and processed by the National Oceanic and Atmospheric Administration Interface Data Processing Segment. The evaluation consists of an inter-comparison with a similar satellite instrument, an analysis using a(More)
BACKGROUND We assessed the effects of smoking and smoking cessation on life expectancy and active life expectancy among persons aged 55 years or older in Beijing. METHODS This study included 1593 men and 1664 women who participated in the Beijing Longitudinal Study of Aging, which commenced in 1992 and had 4 survey waves up to year 2000. An abridged life(More)
This paper presents a manageable overlay network architecture <i>SVCP2P</i> for live scalable media streaming. Every peer in <i>SVCP2P</i> periodically exchanges data availability information with one of distributed central servers which act as the centralized index for storing peer list, program list and buffer information of peers. An efficient scheduling(More)
The self-adjusted limit cycle gait, integrating continuous swings with intermittent heelstrike collision, can make a completely uncontrolled and unactuated passive walker walk stably down a gentle slope, only powered by the gravity. However, this natural and high energy-efficient gait is also highly susceptible to its specific variable parameters and any(More)
This letter studies the mainlobe misorientation problem of the First-Order Steerable Differential Array (FOSDA) in the presence of microphone gain and phase errors, whose response is constructed by a linear combination of monopole and two orthogonal dipoles using a four-element square array. It is shown that the mainlobe orientation of the FOSDA will be(More)