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Mucosal healing is the goal for ulcerative colitis (UC) therapy, but it needs to be confirmed via colonoscopy. Colon capsule endoscopy (CCE) is a noninvasive technique for colon investigation. Our study investigated the accuracy of second-generation CCE (CCE-2) in assessing mucosal lesions and disease activity in UC.In this prospective study, CCE-2 and conventional colonoscopy were performed on the...
Homomorphic encryption may be seen as a substantial potential boon to voting systems. If properly used, it allows provably anonymous elections to take place. However, when poorly constructed, using weak cryptographic primitives results in highly vulnerable systems that are prone to attacks. This paper details one attack done against a model of an election system as part of a security competition,...
We aim to study the disease burden, risk factors and severity of Clostridium difficile infection (CDI) in Hong Kong.We conducted a prospective, case–control study in three acute-care hospitals in Hong Kong. Adult inpatients who developed CDI diarrhoea confirmed by PCR (n = 139) were compared with the non-CDI controls (n = 114). Ribotyping of isolates and antimicrobial susceptibility testing were performed...
The rising of cyber-physical systems (CPS) and Internet of Things (IoT) has significantly increase the industrial productivities and customer convenience. However, the widely distributed CPS and IoT systems also breeds new challenges among which security is a major concern. In order to help build secure and resilient CPS/IoT systems, systematic analyses are performed on CPS and IoT from individual...
Cyber-physical systems (CPS) has seen an expanding implementation in our society facilitating various services from smart grids to smart vehicle network. While traditional criteria in industrial networks and controlling systems are still valid for the emerging CPS, new challenges need to be addressed for the development of future CPS including security, correctness, and resource constraints. These...
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