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Personal health record (PHR) is an emerging patient-centric model of health information exchange, which is often outsourced to be stored at a third party, such as cloud providers. However, there have been wide privacy concerns as personal health information could be exposed to those third party servers and to unauthorized parties. To assure the patients'(More)
As cloud-based services become more numerous and dynamic, resource provisioning becomes more and more challenging. A QoS constrained resource allocation problem is considered in this paper, in which service demanders intend to solve sophisticated parallel computing problem by requesting the usage of resources across a cloud-based network, and a cost of each(More)
On the basis of the Hadoop distributed file system (HDFS), this paper presents the design and implementation of QDFS, a distributed file storage service system that employs a backup policy based on recovery volumes and a quality-aware data distribution strategy. The experimental results show that QDFS increases the storage utilization ratio and improves the(More)
Hexavalent chromium (Cr(6+)) is a common pollutant transient metal with high toxicity in the environment. The toxicological effects partly result from oxidative damage due to the production of excessive reactive oxygen species (ROS) in the reductive process of Cr(6+). To explore the influence of ROS induced directly by Cr(6+) on the oxidative stress(More)
AIM To compare two types of classification of intestinal metaplasia (IM) of the stomach and to explore their relationship to gastric carcinoma. METHODS Forty-seven cases of gastric IM were classified into type I, type II or type III according to mucin histochemical staining and compared with a novel classification in which the specimens were classified(More)
Previous studies showed that the endocrine disrupting chemicals (EDCs) affect reproductive physiology in teleosts. How the EDCs regulate gonadal steroidogenesis remains to be determined. The gonadal transcript changes of steroidogenic enzyme genes in adult rare minnow Gobiocypris rarus exposed to 17α-ethinylestradiol (EE2) and bisphenol A (BPA) were(More)
IMPORTANCE Attention-deficit/hyperactivity disorder (ADHD) is conceptualized as a neurodevelopmental disorder that is strongly heritable. However, to our knowledge, no study to date has examined the genetic and environmental influences explaining interindividual differences in the developmental course of ADHD symptoms from childhood to adolescence (ie,(More)
A location proximity test service allows mobile users to determine whether they are in close proximity to each other, and has found numerous applications in mobile social networks. Unfortunately, existing solutions usually reveal much of users' private location information during proximity test. They are also vulnerable to location cheating where an(More)
G protein-coupled receptors can trigger metalloproteinase-dependent shedding of proteins from the cell surface. We now report that G protein-coupled receptors can themselves undergo regulated metalloproteinase-dependent shedding. The N-terminal exodomain of protease-activated receptor-1 (PAR1), a G protein-coupled receptor for thrombin, displayed regulated(More)