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Skyline query has been gaining much interest in database research communities in recent years. Most existing studies focus mainly on centralized systems, and resolving the problem in a distributed environment such as a peer-to-peer (P2P) network is still an emerging topic. The desiderata of efficient skyline querying in P2P environment include: 1)(More)
This paper looks at the processing of skyline queries on peer-to-peer (P2P) networks. We propose Skyframe, a framework for efficient skyline query processing in P2P systems, which addresses the challenges of quick response time, low network communication cost and query load balancing among peers. Skyframe consists of two querying methods: one is optimized(More)
This paper studies the e ects of various types of online advertisements on purchase conversion by capturing the dynamic interactions among advertisement clicks themselves. It is motivated by the observation that certain advertisement clicks may not result in immediate purchases, but they stimulate subsequent clicks on other advertisements which then lead to(More)
STUDY OBJECTIVE To assess the effect on ovarian reserve function after laparoscopic uterine artery occlusion (LUAO) compared with laparoscopic surgery supracervical hysterectomy (LSH) and laparoscopic myomectomy (LM). DESIGN Prospective cohort study (Canadian Task Force classification II-1). SETTING Hospital with experience in gynecologic minimal access(More)
Intestinal microbiota is known to be important in health and disease. Its composition is influenced by both environmental and host factors. Few large-scale studies have evaluated the association between host genetic variation and the composition of microbiota. We recruited a cohort of 1,561 healthy individuals, of whom 270 belong in 123 families, and found(More)
OBJECTIVE Prospective comparison of laparoscopic uterine artery occlusion plus myomectomy (LUAO+M) with classic intrafascial supracervical hysterectomy (CISH) for symptomatic fibroid treatment, regarding differences in post-operative quality-of-life measures. STUDY DESIGN Three hundred and thirty-two women with symptomatic fibroids who met the inclusion(More)
Parameter estimates for associated genetic variants, reported in the discovery samples are often grossly inflated compared to the values observed in the follow-up samples. This type of bias is a consequence of the sequential procedure as a declared associated variant must first pass a stringent significance threshold. We propose a hierarchical Bayes method(More)
Bacterial infection significantly impedes wound healing. Clinical diagnosis of wound infections is subjective and suboptimal, in part because bacteria are invisible to the naked eye during clinical examination. Moreover, bacterial infection can be present in asymptomatic patients, leading to missed opportunities for diagnosis and treatment. We developed a(More)
The objective of the present study was to investigate the effects of cerebral ischemia-reperfusion on pharmacokinetics of paeoniflorin after intravenous administration of Paeoniae Radix extract (PRE) in rats. The cerebral ischemia-reperfusion rats were induced by occluding the bilateral carotid arteries of normal rats for 2 h, followed by reperfusion. The(More)