우리나라 주식형 펀드의 전략적 행동 -주식형 펀드 간 교차보조를 중심으로

조성빈 한국개발연구원 2011 KDI Journal of Economic Policy (KDI JEP) Vol.33 No.1

This study uses Korea’s equity fund-related data ranging from Jan. 2002 to Apr. 2010 to analyze the existence of cross-subsidization among funds managed by the same management company. The findings are as follows: i) a transfer of performance outcome is confirmed to move from low-fee funds to high-fee funds, meaning that management companies tend to maximize their own interest than investors’ return. And such a tendency has been strengthened since 2008. ii) young funds overperform old funds, iii) funds with high returns in the previous quarter perform better than funds with low return in the same period. These results suggest that in order to protect investors, it is necessary to conduct close monitoring on transactions that might undermine the benefits of investors and comprehensive evaluation on the capability of management companies. 본 연구는 2002년 1월부터 2010년 4월 기간 동안 우리나라 주식형 펀드의 자료를 이용하여 교차보조의 존재여부에 대한 분석을 수행하였다. 분석 결과 전체적으로 운용보수가 낮은 펀드로부터 운용보수가 높은 펀드로 성과의 이전이 이루어져 운용사가 투자자의 이익보다는 운용사의 이익을 극대화하는 행동을 선택함을 확인할 수 있었으며, 이러한 경향은 2008년 이후 강화된 것으로 나타났다. 또한 설정이후 오래된 펀드로부터 신생펀드로의 교차보조와 분기수익률이 높은 펀드로의 성과이전이 존재하나 2008년 이후 이러한 경향은 완화된 것을 확인하였다. 이러한 분석결과는 투자자 보호를 위해 투자자의 이익을 해할 가능성이 있는 거래에 대하여서 면밀한 감독과 운용사의 운용능력에 대한 평가가 종합적으로 이루어질 필요가 있음을 시사한다.

급성 림프구성 백혈병 환자에서 발생한 Fusarium oxysporum 에 의한 전신성 진균증 1예

조성빈,이진욱,조영훈,이광훈 대한의진균학회 2003 대한의진균학회지 Vol.8 No.3

소프트웨어 개발 생산성 향상을 위한 공동 작업 플랫폼 설계

조성빈,김진석,Cho, Sung-Been,Kim, Jin-Suk 한국정보처리학회 1998 정보처리학회논문지 Vol.4 No.1

최근에 개발되고 있는 소프트웨어들은 규모가 거대해지고 기능도 복잡 해지고 있다. 이처럼 복잡한 시스템의 개발을 위해 장기간에 걸쳐 서로 다른 전문가들의 협력 작업과 개발팀 구성원간에 정보 공유, 상호의존적 업무수행, 공동의 산출물 생성들의 작업을 지원하는 CSCW(Computer Supported Cooperative Works)개념을 소프트웨어 개발 방법에 통합하는 연구가 진행 중에 있다. 본 논문에서는 소프트웨어 개발에 있어서의 공동 작업 특성과 분산 컴퓨팅 환경에 의한 공동작업을 지원하여 생산성을 향상 시키는 CSCW개념을 적용하여 정보통신 소프트웨어 개발을 지원하는 하부 구조로서 다자간 공동작업 플랫폼인 SPACE(Software Platform for distributed Application sharing under Cooperative Environment)를 설계하였다. SPACE는 Windows 95 환경 하에서 완전 분산 구조를 가지고 있으며, 개발 도구를 공유하게 하는 공유기법으로 중앙 집중형 구조를 갖는 GUI 공유 방식과 복제 구조를 지원하기 위하여 이벤트 공유방식을 사용하고 있다. Today's Software Systems are becoming bigger, larger and more complex than ever before. To develop largerscale projects, it is required that many experts of different fields participate and cooperate in the same project. So, it is an applied area of CSCW(Computer Supported Cooperative Works} that centers around methodologies and tools that enable cooperative works by geographically distributed people engaged in all aspects of product development. In this paper, we designed a multi-user cooperative works platform, SPACE(Software Platform for distributed Application sharing under Cooperative Environment} as a infrastructure that support to CSCW based system development for telecommunication and information system. SPACE has a fully distributed architecture under Windows 95 environment, has an application sharing mechanism enabling collaborative use of mteractive application adapt to a mixed GUI sharing technology which capture GUI and screen information, and also, an event sharing technology that has a replicated architecture.

부분적으로 반복되는 프로젝트를 위한 프로젝트 내·외의 학습을 이용한 프로젝트기간예측과 위험분석

조성빈 한국경영과학회 2005 韓國經營科學會誌 Vol.30 No.3

This study proposes a framework enhancing the accuracy of estimation for project duration by combining linear Bayesian updating scheme with the learning curve effect. Activities in a particular project might share resources in various forms and might be affected by risk factors such as weather. Statistical dependence stemming from such resource or risk sharing might help us learn about the duration of upcoming activities in the Bayesian model. We illustrate, using a Monte Carlo simulation, that for partially repetitive projects a higher degree of statistical dependence among activity duration results in more variation in estimating the project duration in total, although more accurate forecasting is achievable for the duration of an individual activity.

공급체인 파트너와의 신뢰와 물류효율성 : 연관성규칙의 적용

조성빈,하병천 한국경영공학회 2010 한국경영공학회지 Vol.15 No.3

The purpose of this study is to investigate how individual managers from supplying firms build trust with counterparts from buying firms focusing on the reduction of mutual process control efforts in explaining trust between supplying and buying firms. Also, the effect of such trust on supplying firms' logistics performance is investigated. The result indicates that the trust viewed from supplying firms' managers has an significant impact on supply chain performance.

A Korean Case of Anti-p200 Pemphigoid

조성빈,Soo-ChanKim 연세대학교의과대학 2003 Yonsei medical journal Vol.44 No.5

초고속인터넷 서비스품질에 대한 이용자 불만도 조사연구

조성빈,유한주 한국경영과학회 2002 經營 科學 Vol.19 No.2

The growth of Internet usage even accelerated by the spread of high-speed Internet access network such as ADSL is affecting our socioeconomic activities and culture in a great way. Korea is recently reported to be the number one high-speed Internet network subscription per 100 people in the world. In a way to reflect this situation, we collect a moderate size of sample proportional to the population of each region across country and investigate what factors might explain the level of user’s dissatisfaction with respect to Internet service they have been receiving. The results indicate that the set of gender, age, Internet usage, service kinds, incoming e-mails, and e-shopping is significantly influencing user’s dissatisfaction, in that dissatisfaction is measured in 11 perspectives. In particular, user’s age, gender, and e-shopping experiences are considered to be mostly explainable.

유선과 모바일인터넷의 서비스품질 및 이용만족도에 대한 통합적인 접근방법

조성빈,유왕진 한국경영공학회 2005 한국경영공학회지 Vol.10 No.3

Due to the advancement of mobile and information technology, mobile-based Internet usage has rapidly been increasing. In this study, we introduce an integrated model for analyzing the relationship of service quality and user satisfaction between wired Internet and mobile Internet. The LISREL model analysis indicates that the proposed integrated approach is appropriate for explaining the underlying structure of overall Internet service quality and user satisfaction. The wired Internet service quality has a positive significant effect on the user satisfaction toward wire Internet, and so has the mobile Internet service quality on that toward mobile Internet, which is readily conceivable. Furthermore, the results show that the mobile Internet service quality has a positive significant effect on the user satisfaction toward wired Internet while the influence of wired Internet service quality on the user satisfaction toward mobile Internet is not significant.

신용평가기능 개선을 위한 과제

조성빈 한국개발연구원 2011 KDI Journal of Economic Policy (KDI JEP) Vol.33 No.2

Credit rating agencies(CRAs) are accused of failing to provide accurate and fair credit ratings and hence being responsible for the crisis. This paper tries to add on to the literature on credit rating reform through examining the CRAs in a model where rating quality is unobservable. We show that unobservability of rating effort results in the sub-optimal level of quality. Then the paper extends the model to incorporate ancillary services, competition and reputation. We show that ancillary services worsen the conflict of interests of the CRAs and that competition and reputation may not be strong enough to discipline the CRAs. Hence regulatory oversight and imposition of liability may be necessary in order to increase the accuracy of ratings. 서브프라임 모기지 및 구조화 상품 등에 대한 부정확한 신용등급은 최근 금융위기 확산의 주요 요인으로 지적되고 있다. 본 논문은 신용평가노력을 관찰할 수 없는 숨겨진 행동모형(hidden action model)을 통해 신용평가회사의 행태 및 규제에 대한 분석을 시도하여 현재 논의되고 있는 신용평가기능 개선을 위한 논의에 보완적인 기여를 하고자 한다. 분석 결과, 도덕적 해이가 존재하면 신용평가노력이 관찰 가능하지 않음으로 인해 사회적으로 최적인 수준보다 낮은 수준의 신용평가노력을 기울임을 확인하였다. 경쟁 및 평판효과를 고려한 확장된 모형의 경우에도 신용평가회사에 사회적으로 최적의 유인을 제공하는 데는 한계가 존재한다. 그리고 부수업무의 존재는 신용평가회사의 노력수준과 사회적 최적 수준 간의 괴리를 확대함을 확인하였다. 따라서 경쟁과 평판에 의한 규율이 불완전한 경우 신용평가회사에 대한 감독 및 잘못된 정보의 제공에 따른 책임의 부과가 필요하다.

Chylous Manifestations and Management of Gorham-Stout Syndrome

조성빈,강승리,이범희,최세훈 대한흉부외과학회 2019 Journal of Chest Surgery (J Chest Surg) Vol.52 No.1

Gorham-Stout disease (GSD) was first described by Gorham and colleagues in 1954, but its precise mechanism and cause remain to be elucidated. In this condition, voluminous and potentially fatal chylous effusions into the thorax can occur. Herein, we describe a case of GSD in which the patient presented with massive pleural effusions and mottled osteolytic bone lesions. We performed multiple operations, including thoracic duct ligation using video-assisted thoracoscopic surgery and thoracotomic decortication, but these procedures did not succeed in preventing recurrent pleural effusion and chest wall lymphedema. After administering sirolimus (0.8 mg/m2, twice a day) and propranolol (40 mg, twice a day), the process of GSD in this patient has been controlled for more than 2 years.