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Injury trends among foreign and domestic tourists in Jeju from 2008 to 2018
Hwang, Ki Sang,Lee, Sung Kgun,Song, Sung Wook,Kim, Woo Jeong,Kang, Young Joon,Kang, Kyeong Won,Park, Hyun Soo,Park, Chang Bae,Kang, Jeong Ho,Bu, Ji Hwan,Ko, Seo Young Institute for Medical Science 2022 The Journal of Medicine and Life Science Vol.19 No.1
Jeju is the largest island in Korea and one of its key tourist attractions. As the number of foreign tourists steadily increases, so does the number of injuries incurred there. Accordingly, this study aimed to describe and compare the characteristics of injuries suffered by foreign tourists versus those of domestic tourists. As a cross-sectional study of a retrospective medical record survey, the study was conducted with reference to the Jeju Injury Surveillance System from the 11-year period of January 2008 to December 2018. The following factors were investigated: demographic data, mechanism of injury, place of occurrence, activity when injured, patient outcome, and mortality. A total of 92,095 injured Jeju Island visitors was recorded during this time, a number that included 88,050 Koreans and 4,045 foreigners. The gender ratio showed similar patterns between the two groups and there were no significant age differences. In both groups, the most common mechanism of injury was collisions/cuts. Also, more foreigners experienced falls than Koreans. Regarding the location, Koreans had the most road accidents, while foreigners were most likely to be injured at outdoor locations, such as seas and rivers. Furthermore, more foreigners experienced severe injuries requiring hospitalization. Notably, this study showed the differences in injury between foreign and Korean tourists visiting Jeju Island and its findings lend support to targeted safety promotion programs.
알루미늄 압출재를 적용한 2층 열차 차체의 기초설계 및 구조강도해석
황원주(Hwang Won-Ju),김형진(Kim Hyeong-Jin),강부병(Kang Bu-Byoung),허현무(Hur Hyun-Moo) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-
The purpose of this paper is to introduce the concept design and the structural strength of the double-deck rolling stock vehicle. Aluminum is very useful material for the carbody structure due to its characteristic of light weight. Large aluminum extrusion profiles(panels) have lots of merits such as easy production of complicated shapes, reduction of welding and cutting lines, and cutting down the labor cost. AED type is being applied to the standard EMUs and the EMUs Kwangju subway in Korea. Light material recommended the double-deck rolling stock vehicle because the center of gravity of the train is higher and its weight is heavier than those of the normal vehicle. So we applied the technology of the large aluminum extrusion profiles(panels) to the double-deck vehicle. We performed the structural strength analysis and examined its safety.
Kim, Hyun Soo,Woo, Jong Shin,Kim, Bu Yong,Jang, Hyun Hee,Hwang, Seung Joon,Kwon, Sung Jin,Choi, Eun Young,Kim, Jin Bae,Cheng, Xianwu,Jin, Enze,Kim, Woo Shik,Kim, Kwon Sam,Kim, Weon Elsevier 2014 Atherosclerosis Vol.233 No.2
<P><B>Abstract</B></P> <P><B>Objective</B></P> <P>Several biomarkers reflecting inflammatory or proteolytic activity have been known to represent plaque vulnerability. Moreover, a recent study confirmed that contrast-enhanced ultrasound (CEUS) can visualize intraplaque neovascularization (IPN) and demonstrate plaque vulnerability. In this study, we tried to demonstrate that IPN detected by CEUS was correlated with several well-known biomarkers and clinical outcome in patients with coronary artery disease (CAD).</P> <P><B>Methods</B></P> <P>Patients with stable CAD were screened by conventional carotid ultrasound and patients with carotid plaque thickness more than 2 mm were performed by CEUS for the presence of IPN. Plasma levels of biomarkers and clinical outcomes were evaluated.</P> <P><B>Results</B></P> <P>Among consecutive 89 patients fulfilled the inclusion criteria, 30 patients without IPN (group 1) and 59 patients with IPN (group 2) were analyzed. There were no significant difference in baseline characteristics except for mean age (62.9 ± 10.1 yrs versus 68.4 ± 9.6 yrs, <I>p</I> = 0.015). On multivariate analysis, only MMP-9 (<I>p</I> = 0.021, 95% CI 1.002–1.027) showed a significant association with IPN. But patients with IPN showed only trend for a history of cardiovascular disease (CVD) (44% versus 30%, <I>p</I> = 0.19) and one-year cardiovascular events (CVE) (6.8% versus 3.3%, <I>p</I> = 0.50) compared to group 1. Maximum plaque thickness (<I>p</I> = 0.04, 95% CI 1.230–6.322) showed a significant correlation with the clinical outcome including CVD or CVE.</P> <P><B>Conclusion</B></P> <P>MMP-9 correlated with IPN on CEUS. For clinical implication, however, large prospective studies are needed.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We examine intraplaque neovascularization using contrast enhanced ultrasound. </LI> <LI> We model correlation between intraplaque neovascularization with biomarkers. </LI> <LI> The factors to affect clinical outcomes would be examined including intraplaque neovascularization. </LI> <LI> Only MMP-9 showed a significant association with intraplaque neovascularization. </LI> <LI> Maximum plaque thickness showed a significant correlation with the clinical outcome. </LI> </UL> </P>
Al 압출재 및 SUS 2층열차 차체의 강도해석 비교 검토
황원주(Hwang Won-Ju),김형진(Kim Hyeong-Jin),강부병(Kang Bu-Byoung),허현무(Hur Hyun-Moo) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-
The operation of double deck train have increased in many countries such as Japan, France, and the Netherlands as efficient, safe and convenient alternative transportation systems. Because of continuous concentration of population into Seoul metropolitan and serious traffic jam, the number of passengers using the commuter train have been increased rapidly. Considering these situations, we can find one of the solutions for heavy traffic problems through double deck trains. Stainless steel, and aluminum extruded panel are used to reduce the weight of double deck train. In this paper we compare the results of structural analysis of the double deck car body structures with Al extruded panels and stainless steel. We hope the results of this study may be used as basic guidelines in designing double deck trains in the future.
정현철(Chung Hyun Cheol),황부현(Hwang Bu Hyun) 한국정보처리학회 1997 정보처리학회논문지 Vol.4 No.3
Security as well as consistency of data is very important issue in database security. Thus, the serializability of transactions must be maintained and particularly convert channel not caused between a high-level transaction and a low-level one. In this paper, we propose a secure transaction management algorithm using dynamic version control method that can slove disk space overhead to maintain multiversion and the problem that transactions read too old versions when two versions are maintained. Disk space overhead can be sloved by properly creating versions and dynamically maintaining the number of versions and the problem for reading too old version can be solved by having transactions read versions as recent as possible.