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Exchange Rates Movements and Trade Flows : Case Study of Korea
오동현(Dong Hyun Oh) 한양대학교 디지털경제연구소 1996 디지털경제연구 Vol.1 No.-
Traditionally devaluation was considered as improving trade balance by expanding the real quantity of exports and reducing the real quantity of imports when the Marshall-Lerner condition is satisfied. The purpose of this paper are to identify the extent to which own exchange rate movements explain improvement in competitiveness, changing trade balances and to investigate whether exchange rates movements of competing countries(Taiwan and Japan in this study) can affect the terms of trade and trade flows of Korea. A conventional elasticities approach was used. In this study, the empirical results show that (1) the effect of a devaluation on trade balance is very weak in Korea ; (2) Japan's exchange rate affects on total exports of Korea ; and (3) Taiwan's exchange rate affects export prices of Korea.
창업 단계의 기업가정신 제고 방안: 효율성 분석 방법론을 중심으로
오동현 ( Dong Hyun Oh ),이윤준 ( Yoon Jun Lee ),이아정 ( Ah Jung Lee ) 한국생산성학회 2015 生産性論集 Vol.29 No.1
The goal of this study is to develop policy suggestions in order to increase the efficiency of entrepreneurship. First, regression analysis is carried out to examine how input variables affect output in each phase of startup development. Then, data envelopment analysis(DEA) estimates efficiency in each development process in 26 countries and identifies where South Korea locates herself in terms of entrepreneurial efficiency. The empirical results in the regression analysis implies the following. First, in terms of entrepreneur, more young people should become self-employed to achieve business opportunities in the market. Second, in terms of regulatory environment, government programmes should be diversified and differentiated in order to meet the various needs of startup companies. Third, in terms of market, startups should be tenacious, equipped with global competencies to survive. Fourth, in terms of financial support, it should be easier for startups to enter into market with accessible unsecured loans. Fifth, in terms of knowledge infrastructure, it is critical to encourage substantial investments on R&D. Sixth, in terms of education/training, vocational and lifelong education/training produces more effective result than the one at universities. Last, in terms of cultural environment, society needs to show more respects to entrepreneurs, and media should pay more attention to their entrepreneurship. DEA addresses benchmark countries for South Korea to improve efficiency in each stage of development phases. While the efficiency of Korean startups is above average in the phase of pre-startup, early-stage startup, and growth, it is far below average in the phase of failure/recovery. Among the entrepreneurship in benchmark countries on the efficiency frontier, it is highly suggested that the one in China should be extensively analysed to carry implications to Korea.
OECD 회원국의 녹색생산성 비교분석을 통한 녹색정책경로 모색
오동현 ( Dong Hyun Oh ),정기철 ( Gi Cheol Jeong ) 한국생산성학회 2012 生産性論集 Vol.26 No.2
The green policies have actively been paid attention to as the green growth is one of global issues from the economic and environmental perspectives. This paper analyzes the green productivity growth index for the OECD countries over the period 1991-2009 in order to explore the trajectory of the green policy, aiming at effective policy implication. We used the macroeconomic and CO2 emissions indicators for the empirical investigation. We also decomposed the green productivity growth index into efficiency change and technical change indexes. The empirical results tell us that i) in a short term Korea needs to focus on catching up with the Northern European countries, and ii) in a long term she needs to spur the green innovation. We believe that this research is helpful for the policy makers to develope policies about the green growth.
RDF 메타 데이터를 이용한 인덱스 기반의 XML / SGML문서 검색 방법에 관한 연구
오동현(Oh Dong-Hyun),김규태(Kim Gyu-Tae),정희경(Jung Heoi-kyung),이수연(Lee Soo-Youn) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.2Ⅰ
인터넷이 급속히 성장함에 따라 대량의 SGML/XML문서를 보다 효과적으로 다룰 필요성이 증대하고 있다. SGML/XML문서를 데이터베이스에 저장하는 경우에 문서를 파싱하여 파싱된 결과를 모두 분리하여 저장하고 서로의 연관관계를 모두 구분하는 경우 구조화 정보를 최대한 이용할 수 있는 등 여러 가지 장점을 지니게 된다. 하지만, 이 경우 분할단위의 폭발적인 증가로 인한 시스템 성능 저하와 내용중복으로 인한 색인저장 오버헤드가 문제이다. 이런 문제점을 해결방안의 하나로서 본 논문에서는 RDF 메타데이타를 통하여 검색시 의미가 있는 단위로 분할 단위를 축소 지정하고 이 축소된 정보를 기반으로 인덱스를 생성하여 내용중복을 방지하는 방법을 제안하였다. 이 방법은 RDF메타데이타를 통해 이루어짐으로서 웹기반에서 자동으로 이루어질 수가 있으며, 이를 통해서 기존의 방법보다 자동화된 검색을 할 수 있다.