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Real-time people flow information is very useful for security application as well as people management. This paper presents a counting system which consists of four modules: foreground extraction, head-shoulder component detection, tracking and trajectory analysis. Firstly, in order to reduce computation costs and cope with various complex surveillance(More)
Lead halide perovskite solar cells have recently attracted tremendous attention because of their excellent photovoltaic efficiencies. However, the poor stability of both the perovskite material and the charge transport layers has so far prevented the fabrication of devices that can withstand sustained operation under normal conditions. Here, we report a(More)
Over the past few years, smartphones have emerged as one of the most popular mechanisms for accessing content across the Internet driving considerable research to improve wireless performance. A key foundation for such research efforts is the proper understanding of user behavior. However, the gathering of live smartphone data at scale is often difficult(More)
OBJECTIVES Human adenovirus (HAdV) type 14 had been infrequently associated with outbreaks of febrile respiratory illness (FRI) until the HAdV-14p1 emerged in 2006 and rapidly spread in the United States. Here, we report an outbreak of FRI caused by HadV-14p1 that occurred in 2011 at a primary and middle school in China. DESIGN The basic information of(More)
BACKGROUND Alcohol consumption is one of the top 10 risks for the worldwide burden of disease and an established cause of head and neck cancer, as well as cancer at other sites. Acetaldehyde, the major metabolite of ethanol, reacts with DNA to produce adducts, which are critical in the carcinogenic process and can serve as biomarkers of exposure and,(More)
Biological network alignment aims to find regions of topological and functional (dis)similarities between molecular networks of different species. Then, network alignment can guide the transfer of biological knowledge from well-studied model species to less well-studied species between conserved (aligned) network regions, thus complementing valuable(More)
During the one minute it takes to read this abstract, two billion smartphones worldwide will perform billions of Wifi channel scans recording the signal strength of nearby Wifi Access Points (APs). Yet despite this ongoing planetary-scale wireless network measurement, few systematic efforts are made today to recover this potentially valuable data. In this(More)
temporal distributions of RLD using experimental measurements and simulations. The root length density (RLD) is an important parameter to model Experimental measurement approaches of RLD diswater and nutrient movement in the vadose zone and to study soil– tributions include the root sampling method (Kumar root–shoot–atmosphere interactions. However, it is(More)
BACKGROUND Mesenchymal stem cells (MSC) play important roles in modulating the activities of T lymphocytes, dendritic cells and natural killer cells. These immunoregulatory properties of MSC suggest their therapeutic potential in autoimmune diseases. However, the effects of MSC on B cells are still poorly understood. The present study was designed to(More)
BACKGROUND Systemic and local inflammatory processes play key, mainly detrimental roles in the pathophysiology of acute lung injury (ALI). The present study was designed to determine whether human umbilical cord mesenchymal stem cells (UCMSC) are able to act on CD4(+)CD25(+) Foxp3(+)Treg cells and lead to an improvement in ALI. METHODS Mice were(More)