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지표 개발을 통한 우리나라 교통 SOC 스톡의 국제비교
신의철,이재민(Lee, Jae-Min),심양주 대한교통학회 2004 대한교통학회 학술대회지 Vol.46 No.-
사회간접자본(SOC)은 교통, 통신, 전력 등 국가전체의 경제활동에 필요한 기반을 제공하는 공공시설로 정의되는데, 국가 예산상으로는 도로, 철도, 지하철, 공항, 항만 등 교통시설 외에 다목적댐, 치수, 용수사업을 SOC사업으로 분류하고 있다. 우리 경제의 경쟁력 강화를 위해서는 주요 사회간접자본 특히, 도로, 철도, 항만, 공항 등의 교통 인프라를 적기․적소에 공급하여 물류비용을 절감시켜 효율적인 생산 및 소비활동을 뒷받침해야 한다. 사회간접자본 부족을 타개하기 위한 정부 노력의 결과, 교통부문 SOC투자의 경우 2003년에 13.9조원으로 지난 5년간 32.7% 증가하였다. 그러나 이러한 교통부문 SOC 투자규모 대해서, 국가경제 규모에 비해 과잉 투자가 이루어지고 있으므로 줄여야 한다는 견해와 향후 일정기간 지속적으로 현재의 교통 SOC 투자가 유지되어야 한다는 견해가 대립되고 있는 실정이다.
신의철,이진환,황정은,이병원,김현태,고종민,백인열,신지현,남상해,서원택,조계만 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.2
Changes in β-glycosidase activity, total phenolicand isoflavone contents, and antioxidant activities duringthe fermentation of brown soybeans (Galmi) fermentedfood cheonggukjang by the potential probiotic Bacillussubtilis CSY191 were investigated. The total phenolic andisoflavone-glycoside and -aglycone contents as well asABTS radical scavenging activity and FRAP assays ofextracts increased, but malonylglycoside content decreasedafter a steaming process. It was found that fermentationenhanced the total phenolic and isoflavone-aglycone and-malonylglycoside contents, corresponding to antioxidantactivities increased, but isoflavone-glycoside contentdecreased. The highest levels of daidzein, glycitein, andgensitein were present at concentrations of 156.5 μg/g,10.2 μg/g, and 2.5 μg/g after 48 h of fermentation. Inaddition, ABTS radical scavenging activity and FRAPassay increased significantly during fermentation. Wesuggest that the high antioxidant activity of cheonggukjangof brown soybeans might be related to the markedly higherlevels of total phenolic content and isoflavone-aglyconesachieved during fermentation.
New Korean Record of Setarches longimanus (PISCES: Scorpaenidae)
신의철,김진구,주동수 한국수산과학회 2016 Fisheries and Aquatic Sciences Vol.19 No.2
Setarches longimanus (Alcock 1894), in the family Scorpaenidae, was collected from Busan and the coastal waters of Jeju Island,Korea,inJanuaryandNovember2014,respectively.TwospecimensarecharacterizedbyXI,10dorsalfinrays; 19–21pectoralfinrays; III, 5 anal fin rays; a second preopercular spine much shorter than the first and third; and an interorbital width 11.3 %–11.6 % of the standard length. We also analyzed 587 base pairs of the mitochondrial DNA cytochrome c oxidase subunit I sequences in order to confirm the taxonomic status of the specimen. As a result, the sequences of our specimen almost corresponded to those of Chinese S. longimanus (genetic distance, d = 0.005), but considerably differed from those of S. guentheri (d = 0.120–0.124). We propose the new Korean names “Ma-su-gampeng- sok” for the genus Setarches, and “Bul-geun-ma-su-gam-peng” for the species S. longimanus.
의료보험자료 상병기호의 정확도 추정 및 관련 특성 분석 -법정전염병을 중심으로-
신의철,박용문,박용규,김병성,박기동,맹광호,Shin, Eui-Chul,Park, Yong-Mun,Park, Yong-Gyu,Kim, Byung-Sung,Park, Ki-Dong,Meng, Kwang-Ho 대한예방의학회 1998 Journal of Preventive Medicine and Public Health Vol.31 No.3
This study was undertaken in order to estimate the accuracy of disease code of the Korean National Medical Insurance Data and disease the characteristics related to the accuracy. To accomplish these objectives, 2,431 cases coded as notifiable acute communicable diseases (NACD) were randomly selected from 1994 National Medical Insurance data file and family medicine specialists reviewed the medical records to confirm the diagnostic accuracy and investigate the related factors. Major findings obtained from this study are as follows : 1. The accuracy rate of disease code of NACD in National Medical Insurance data was very low, 10.1% (95% C.I. : 8.8-11.4). 2. The reasons of inaccuracy in disease code were 1) claiming process related administrative error by physician and non-physician personnel in medical institutions (41.0%), 2) input error of claims data by key punchers of National Medical Insurer (31.3%) and 3) diagnostic error by physicians (21.7%). 3. Characteristics significantly related with lowering the accuracy of disease code were location and level of the medical institutions in multiple logistic regression analysis. Medical institutions in Seoul showed lower accuracy than those in Kyonngi, and so did general hospitals, hospitals and clinics than tertiary hospitals. Physician related characteristics significantly lowering disease code accuracy of insurance data were sex, age group and specialty. Male physicians showed significantly lower accuracy than female physicians; thirties and fortieg age group also showed significantly lower accuracy than twenties, and so did general physicians and other specialists than internal medicine/pediatric specialists. This study strongly suggests that a series of policies like 1) establishment of peer review organization of National Medical Insurance data, 2) prompt nation-wide expansion of computerized claiming network of National Medical Insurance and 3) establishment and distribution of objective diagnostic criteria to physicians are necessary to set up a national disease surveillance system utilizing National Medical Insurance claims data.
Comparative Analysis of Liver Injury-Associated Cytokines in Acute Hepatitis A and B
신의철,신소연,정숙향,성필수,이진오,김형준,이현웅 연세대학교의과대학 2016 Yonsei medical journal Vol.57 No.3
Purpose: Acute hepatitis A (AHA) and acute hepatitis B (AHB) are caused by an acute infection of the hepatitis A virus and the hepatitis B virus, respectively. In both AHA and AHB, liver injury is known to be mediated by immune cells and cytokines. In this study, we measured serum levels of various cytokines and T-cell cytotoxic proteins in patients with AHA or AHB to identify liver injury-associated cytokines. Materials and Methods: Forty-six patients with AHA, 16 patients with AHB, and 14 healthy adults were enrolled in the study. Serumlevels of 17 cytokines and T-cell cytotoxic proteins were measured by enzyme-linked immunosorbent assays or cytometric bead arrays and analyzed for correlation with serum alanine aminotransferase (ALT) levels. Results: Interleukin (IL)-18, IL-8, CXCL9, and CXCL10 were significantly elevated in both AHA and AHB. IL-6, IL-22, granzyme B, and soluble Fas ligand (sFasL) were elevated in AHA but not in AHB. In both AHA and AHB, the serum level of CXCL10 significantlycorrelated with the peak ALT level. Additionally, the serum level of granzyme B in AHA and the serum level of sFasL in AHB correlated with the peak ALT level. Conclusion: We identified cytokines and T-cell cytotoxic proteins associated with liver injury in AHA and AHB. These findings deepen the existing understanding of immunological mechanisms responsible for liver injury in acute viral hepatitis.
신의철,이재헌,Shin, Euicheol,Lee, Jae-Heon 한국플랜트학회 2015 플랜트 저널 Vol.11 No.4
국내 플랜트 엔지니어링 및 건설 업체들의 수익성 악화가 지속됨에 따라 플랜트 원가 경쟁력 강화 및 생산성 향상에 대한 요구가 증대되고 있다. 본 논문에서는 ISO 도면으로부터 용접 포인트의 번호를 부여 하는 용접커팅플랜 작업과 용접이력관리를 위한 용접검사보고서 작성에 대하여 현행 프로세스를 분석하고 문제점을 도출하였다. 현행 프로세스에서는 수작업에 따른 생산성 저하와 현장변경요청 발생에 대한 검증의 어려움이 발생하여 전산화를 통하여 석유화학 플랜트 배관공사용 용접관리 프로세스를 개선하였다. 개선 효과의 검증을 위해 국내 석유화학 플랜트 건설 프로젝트를 대상으로 현장변경요청 발생률과 업무 생산성 향상에 대하여 개선 전후를 비교하였다. 개선된 프로세스를 적용하여 현장변경요청 발생률은 개선프로세스 적용 이전 대비 4.3%p 감소하였고, 업무 생산성은 개선프로세스 적용 이전 대비 생산성이 한 장당 0.13 시간 향상이 있음을 확인할 수 있었다.