상공정맥 증후군을 초래한 우항 대동맥궁 1예

한병석,김철호,오병희,이명묵,박영배,최충식,서정돈,이영우 대한순환기학회 1989 Korean Circulation Journal Vol.19 No.4

免疫血淸學的 方法에 依한 姙産婦의 Toxoplasma 抗體價分布에 關한 調査硏究

韓炳錫,李英河,羅榮彦,辛大煥 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.1

In order to evaluate the Toxoplasma antibody titers, authors were examined sera of 117 pregnant women by enzyme-linked immunosorbent assay(ELISA), methlyene blue dye test and indirect latex agglutination test. The results were obtained as follows: 1. The ELISA values to the Toxoplasma antibody showed less than 0.200 in 2 cases(1.7%), 0.20 0-0.299 in 13 cases(11.1%), 0,300-0.399 in 29 cases(24.8%), 0.400-0.499 in 143 cases(12.0%), 0.500-0.599 in 26 cases(22.2%), 0.600-0.699 in 19 cases(16.2%), 0.700-0.799 in 6 cases(5.1%), 0.800-0.899 in 7 cases(6.0%), more than 0.900 in 1 case(0.9%), respectively. Regard to positive ELISA values were more the 0.800, positive rates of ELISA were 6.9%. 2. The dye test antibody titers showed less than 1:4 in 70 cases (59.8%), 1:4 in 27 cases(23.1%), 1:16 in 13 cases(11.1%), 1:64 in 6 cases(5.1%), and 1:256 in 1case(0.9%), respectively. Regard to 1:64 or more tilers of diluted sere were positive, the positive rates of dye test were 6.0%. 3. The Toxoplasma antibody titers by indirect latex agglutination test were less than 1:2 in 9 cases(7.7%), 1:2 in 47 cases(40.2%), 1:4 in 27 cases(23.1%), 1:8 in 21 cases(17.9%), 1:16 in 7 cases(6.0%), 1:32 in 5 cases(4.3%), and 1:64 in 1 cases(0.9%), respectively. Regard to 1:32 or more titers of diluted sera positive, the positive rates of indirect latex agglutination test were 5.2% 4. There were correlation between dye test antibody titers and ELISA values(correlation coefficient, r=0.414). The present study revealed that Toxoplasma antibody titers of pregnant women by various immunoserologic methods showed 5.1∼6.9%.

파생계약부 소득연계대출의 역사

한병석,강형구 한국재무학회 2015 한국재무학회 학술대회 Vol.2015 No.05

본 연구는 파생계약부 소득연계대출의 역사적인 전개과정과 발전방향을 우리나라에서 최초로 검토하였다. 파생계약부 소득연계대출인 취업후상환대출(ICL)은 지난 2010년부 터 국내에서 운영되고 있다. 취업후상환대출은 소득발생이라는 전제조건이 충족되는 경 우에만 상환이 개시된다는 점에서 대출자(lender)의 관점에 보면 소득연계형 대출이라 고 할 수 있고, 차입자(borrower)의 입장에서는 취업이라는 옵션의 행사여부가 대출상 환과 연계되어 있다는 점에서 파생상품계약이라고 할 수 있다. 그러나 현재까지 파생계 약부 소득연계대출의 해외현황에 대한 연구만이 제한적으로 진행되어 왔다. 동 제도의 탄생배경 및 역사적 발전과정에 대한 연구는 전무한 실정이다. 한국의 특별한 상황을 고려한 연구도 없다. 이 연구는 이러한 기존 연구의 한계를 극복한다. 본 연구의 결과 는 다음과 같다. 학자금대출제도는 정부가 부담하던 고등교육비용을 점차 개인이 부담 하게 하는 방편으로 1950년대부터 도입되었다. 이후 1980년대에는 대출자의 경제적 부 담을 최소로 하기 위해 파생계약부 소득연계대출이 탄생하는 과정을 거치면서 전개된 것으로 나타났다. 또한 본 연구에서는 파생계약부 소득연계대출의 발전방향에 대해서도 예측했다. 파생계약부 소득연계대출은 채권형에서 주식형으로 그 성격이 변화될 가능성 이 큰 것으로 나타났다. 이러한 변화의 배경에는 각국 정부가 점점 대출자에 대한 부담 을 크게 만드는 방식으로 변경하고 있다는 점, 궁극적으로 관련비용을 개인이 전적으로 부담하는 방향으로 변경될 가능성이 매우 크다는 점 등이 있다. 본 연구는 파생계약부 소득연계대출의 발전방향을 예측하였음은 물론 이를 통해 주식형 투자의 실현가능성과 추진체계를 구체적으로 제시하였다는데도 정책적 시사점을 가진다. We firstly document the history of derivatives contracting on the loan linked with human capital. Income Contingent Loan, a kind of derivatives contracting on loans has been introduced in the country since 2010. Income Contingent Loan is an income-contingent derivative loan from lender's viewpoint in that payments begin only if a precondition is met. It is a derivatives contracting from borrower's viewpoint as well; whether to exercise the option of getting-a-job depends on repayment strategy. However, existing research only analyzes the current status of foreign cases without considering their history and Korean specific factors on the derivatives contracting for loans . There is no research on its background and historical development. We fill the gap of this literature using interesting international cases. We find that student loan system has been introduced in order to encourage individuals to pay higher fraction of education cost which the government has paid since the 1950s. In the 1980s, student loan system has particularly evolved and become to create derivatives contracting on the loan in order to minimize lender's economic burden and risk exposure. Furthermore, this study examine the future prospect of derivatives contracting on loan. The derivatives contracting on loan will evolve from debt-like toward equity-like investment. This will reduce the burden and exposure of governments while increasing the investment on human capital. This study has many policy implications discussing the development of student loan system, its vision and implementation.

방사선 및 방호 안전규제연구의 성과와 23년 사업계획

한병석 대한방사선방어학회 2022 대한방사선방어학회 학술발표회 논문요약집 Vol.2022 No.11

Strategic Branding of Financial Services:An Analysis of Income Contingent(DeunDeun) Student Loan Contracts

한병석,전희경,전상경,강형구 한국경영교육학회 2016 경영교육연구 Vol.31 No.5

[Purpose]Despite the fact that many students rely on student loans to fund university tuition, there is little brand research that focuses on financial products related to education. This is especially the case for income-contingent student loan contracts. [Methodology]In this case study, we review relevant literature on brand strategy and utilize Keller’s theory on brand equity to formulate a strategy for successful brand management of income-contingent loan contracts. [Findings]Income-contingent student loan contracts differ from other student loan products in that students can repay their debts after they start to generate income. But despite the merits of such loans, such as DeunDeun Student Loan, they remain largely unknown to most students. [Implications]Successful brand management of income-contingent loans should generate sufficient demand from end users and, in turn, enhance the welfare of students. In addition, broader benefits of this analysis include capability enhancement of policymakers in designing and promoting financial products, especially those related to education.

디지털 전환시대의 지역금융기관 경영전략 : BNK금융지주 사례를 중심으로

한병석,최영두,오대원 한국무역통상학회 2021 무역통상학회지 Vol.21 No.6

Local banks play a very important policy role in that they are the starting point for regional economic development. Therefore, the academic review on the survival and growth of local banks is urgent and important. To ensure local banks‘ role in the digital financial era, this paper presents a practical strategy for the survival of local banks using BNK Financial Group as a case. Specifically, we suggest a strategy of reorganizing the existing Busan Bank and Kyongnam Bank into a two-bank system of BNK Bank and BNK Digital Bank to compete with big commercial banks and Internet-only banks. This study also proposes a two-track marketing model for BNK Bank and BNK Digital Bank respectively: (1) securing existing customers through positioning as a new top 5 commercial bank; (2) penetrating new customers with the co-operation of tech companies such as NC Soft and NAVER.

국가 주도 공공 통합데이터거래소 설립과 운영에 관한 연구

한병석,강형구 한국무역통상학회 2023 무역통상학회지 Vol.23 No.5

Data is evaluated as a core resource for a company. But at the individual company level, there are criticisms that it is limited to rudimentary analysis based on limited data. Although there are many studies to solve this inefficiency, an implementation plan still need to be addressed. This study presents a theoretical and practical framework to fill this gap. First, from a theoretical point of view, the necessity of an integrated data transaction exchange is presented using the Knowledge Based view theory and the mission oriented policy theory. And from a practical point of view, we suggest not only exchange design and operation plans, but also a step-by-step strategy to increase data transactions. In addition, this paper provides the rationale for active use of user community functions and collaboration with scholars in field of business and economics in order to utilize user forums to solve factors that limit data transactions and apply the answers to real-world corporate management.

초임계 이산화탄소를 이용한 홍화로부터 황색소 추출

한병석,김공환,정인식,Han, Byung-Seok,Kim, Kong-Hwan,Chung, In-Sik 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.43 No.4

Supercritical fluid(SCF) carbon dioxide was used to extract safflower yellow pigments from Carthamus tinctorius L. In this work, supercritical fluid extractions were performed at various conditions; pressure (2000, 3000, 4000, 5000 psig), temperature $(40,\;50,\;60,\;70,\;80^{\circ}C)$ and co-solvent $(0,\;3,\;6,\;10,\;14\;wt%\;H_2O)$. Total concentrations of safflower yellow pigments extracted were determined by spectrophotometric method. A maximum yield of yellow pigments was obtained at 4000psig, $60^{\circ}C$ and 10% co-solvent. The extraction yield of pigments was also closely related to moisture content of the raw material. Extraction yield of safflower yellow pigments by SCF extraction at optimized conditions was 6% higher than that by solvent extraction. Supercritical carbon dioxide was proved to be suitable for the extraction of safflower yellow pigments from Carthamus tinctorius L. 홍화로부터 초임계 이산화탄소를 이용하여 황색소(safflower yellow)를 추출할 때의 최적 조건을 조사하였다. 여러 온도$(40,\;50,\;60,\;70,\;80^{\circ}C)$와 압력(2000, 3000, 4000, 5000 psig) 조건에서 추출을 하였으며 수율을 증가시키기 위해 물을 보조용매(0, 3, 6, 10, 14 wt%)로 하여 실험을 수행하였으며 색소분석은 spectrophotometer를 이용하였다. 황색소의 추출 수율은 $60^{\circ}C$, 4000 psig에서 가장 높게 나타났다. 보조용매로 물을 사용하였을 때는 10 wt%일 때 황색소의 추출이 가장 잘 되었고 그 이상에서는 오히려 추출량이 감소하는 경향을 보였다. 또한 시료의 수분함량은 초임계 유체 추출 시 수율과 밀접한 관련이 있는데 홍화의 황색소 추출 시에도 시료의 수분함량이 낮을수록 수율이 증가함을 알 수 있었다. 아울러 초임계 유체를 이용하여 최적 조건에서 추출한 경우 황색소의 수율은 용매로 추출한 경우에 비해 6% 정도 증가하였다. 상기의 결과로 초임계 이산화탄소 추출법은 홍화로부터 황색소의 추출에 적합하다는 것을 확인할 수 있었다.

A Case Study of Option Shock in the Korean Stock Market

한병석,전상경,김은지,강형구 한국경영학회 2017 Korea Business Review Vol.21 No.4

This case study reviews the option shock, which occurred during the last ten minutes of trading on the expiry date of KOSPI200 options, Nov. 11th, 2010. KOSPI200 index plummeted by 2.79% on Nov. 11th 2010, which triggered the market collapse. By investigating participants’ behavior of the suspicious trading and their actual derivatives positions specifically, our study shows that the Nov. 11th Option Shock was the result of multiple violations of related regulations. Traders at an international securities company in Hong Kong made unfair profit with an intent to manipulate the market. Their colleagues in Korea also made money using the confidential trading information from the counterpart subsidiary in Hong Kong. The asset management firm placed option orders with trading amount well over the limit set by the regulatory code, and the local securities firm neglected to monitor the trading limit of the asset management. With these series of violations, billions of dollars of market capital evaporated, and investors lost millions of dollars. Similar incidences on the option expiration date have occurred all over the world. This study can provide the practical implications for policy makers and market participants. It also provides us with an excellent teaching opportunity in the areas of finance and business ethics.

파이토케미컬 펩타이드 유도체를 포함하는 다양한 리포좀 제형의 안정성

한병석 ( Byung Seok Han ),김수영 ( Su Young Kim ),이경록 ( Kyung Rok Lee ),서효현 ( Hyo Hyun Seo ),모상현 ( Sang Hyun Moh ) 대한화장품학회 2016 대한화장품학회지 Vol.42 No.2

본 연구에서는 파이토케미컬 펩타이드 유도체를 포함하는 니오좀 및 리포좀 제형의 안정성을 조사하였다. 여러 가지 조건에서 레시틴 혹은 계면활성제를 이용하여 제조된 리포좀 중에서 sodium palmitoyl sarcosinate와 마카다미아넛 오일을 이용한 니오좀의 안정성이 제일 우수하였다. 파이토케미컬 펩타이드 함유 니오좀(N9)의 형태는 TEM으로 확인하였으며, 입자크기는 95.7 nm로 관찰되었다. N9의 안정성은 Turbiscan 결과(0°와 45°)와 제타포텐셜(-78.19 mV)로 확인하였다. N9의 펩타이드 봉입률은 BCA assay 결과 65.2%로 관찰되었다. In this study, we investigated the stability of the liposome formulation containing the phytochemicals-peptide derivatives. Among liposomes prepared using lecithins or surfactant under various conditions, the most stable niosome was obtained by using sodium palmitoyl sarcosinate and macadamia intergrifolia seed oil. The stability of peptide-containing niosome (N9) was confirmed by the TEM images. The N9 was stable at 0 and 45 degrees by Turbiscan, and its particle size was 95.7 nm. The N9 showed zeta potential value of -78.19 mV, and peptide-inclusion rate of 65.2% by BCA assay.