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Evidence indicates that irritable bowel syndrome can occur after gastroenteritis. However, little is known about its incidence after diverticulitis. This study was designed to identify the incidence and risk factors of irritable bowel syndrome after diverticulitis in Korea. A survey regarding irritable bowel syndrome was performed in patients allocated to(More)
BACKGROUND The level of urine cotinine is an indicator of tobacco smoke exposure. The purpose of this study is to investigate urine cotinine for the purpose of assessing the smoking status of Korean smokers and non-smokers exposed to tobacco smoke. METHODS The subjects were identified from the 2007-2009 and the 2010 data sets of the Korea National Health(More)
Researches on Augmented Reality (AR) have recently received attention. With these, the Machine-to-Machine (M2M) market has started to be active and there are numerous efforts to apply this to real life in all sectors of society. To date, the M2M market has applied the existing marker-based AR technology in entertainment, business and other industries. With(More)
Despite growing awareness of security issues especially in SCADA networks, there exist little or scarce information about SCADA vulnerabilities and attacks. Where security has been a consideration, there has been no clear methodology to assess the security impacts brought about by attacks. Worst, there have been no or very little security tools that have(More)
Synchronous gastric neoplasms are not infrequently detected, thus endoscopic submucosal dissection (ESD) for multiple early gastric neoplasia is occasionally considered. However, there have been few investigations of the safety and feasibility of simultaneous ESD for multiple gastric lesions. This study aims to evaluate the safety and feasibility of(More)
BACKGROUND AND AIM Metachronous recurrence often occurs after endoscopic submucosal dissection for early gastric cancer, and a method for preventing recurrence is unknown. We aimed to identify risk factors for metachronous lesions, and the effects of aspirin use and Helicobacter pylori eradication on preventing recurrence. METHODS A total of 1041(More)
We have carried out research on high-speed crowd simulation effects through marker-based multi-object augmentation as the basis for a crowd scene processing system that can produce natural movement of a crowd with less resources and operation. When applied to 3D AR images, this method is expected to achieve high efficiency with less mobile resources.