간헐적공기압박장치의 전달압력 측정시스템 개발

이원희,서종현,김준,강승호,김국한,정승현,김광기,강현귀,Lee, Wonhee,Seo, Jong Hyun,Kim, Jun,Kang, Seung Ho,Kim, Gook Han,Chung, Seung Hyun,Kim, Kwang Gi,Kang, Hyun Guy 대한의용생체공학회 2016 의공학회지 Vol.37 No.1

A pressure measurement system was developed to verify magnitude and position of transferred pressure on the body surface during the intermittent pneumatic compression (IPC) which is one of the most well-known methods for the prevention of deep vein thrombosis (DVT). Eighty force sensing resistors (FSR) were arranged on a mannequin leg and a hardware controller sensed, digitized, and transferred pressure data every second while IPC was being applied. Finally, sensed pressure data were color coded and visualized on the 3D model with lab-developed software. The pressure data were also saved to files for further analysis. Using this measurement system, the changing pattern of pressure was measured on the mannequin leg by changing both chamber pressure and cuff tightness. As a result, net pressure transferred onto the body surface is dependent on chamber pressure and cuff tightness. Under the same chamber pressure, the tighter a cuff was worn, the wider compressed area was and the shorter compression cycle was. Also transferred pressure was proportional to both chamber pressure and cuff tightness.

단계적 퍼지 시스템 전략모듈을 지원하는 에이전트기반 게임 플랫폼

이원희(WonHee Lee),김원섭(WonSeop Kim),김태용(TaeYong Kim) 한국멀티미디어학회 2008 멀티미디어학회논문지 Vol.11 No.1

수도권 규제개혁의 과제

이원희(Lee Wonhee) 경기연구원 2008 경기논단 Vol.10 No.3

Seoul Metropolitan area is controlled by various kinds of regulations. This research focused on the fiscal and tax policy. First, Gyeonggi-Do is non-grant-beneficiary government. Recently central government increased the amount of the grant, transferring the function and tasks to local government. In this sense, Gyeonggi-Do is reversely discriminated. Also the decentralization grant which was introduced by integrating the welfare related subsidy gives only 15% to Gyeonggi-Do, even though the population ratio is 21.7%. And differential ratio was adopted to the Gyeonggi-Do in the field of welfare subsidy. Furthermore, the distribution of the comprehensive real estate tax which was transferred from local government tax to central government tax does not support the original level. These financial policy is the cause of the fiscal stress of the Gyeonggi-Do. Second, the tax policy is oriented to induce the firms located in the Seoul Metropolitan area to expel to the non-Seoul Metropolitan area. Various kinds of tax exemption and tax expenditure policy for the non-Seoul Metropolitan area are adopted. The point is that these policies are not effective. Those policies don’t exert the intended effect, only result in the inconvenience. In the field of the fiscal subsidization, new system for supporting the retard region in the Gyeonggi-Do is needed. And the comprehensive new design for the tax system is imperative.

Moving image segmentation 에 관한 연구

이원희(Wonhee Lee),변재응(Chaeung Byun),김재영(Jaeyoung Kim),정진현(Chinhyun Chung) 대한전기학회 1996 대한전기학회 학술대회 논문집 Vol.1996 No.7

Carbon Trading Strategies from the Perspective of International Trade

Wonhee Lee(이원희) 중앙대학교 한국전자무역연구소 2018 전자무역연구 Vol.16 No.2

연구목적: 본 연구의 목적은 국제 무역 관점에서 청정개발체제를 중심으로 탄소배출권 사업내 위험 유형을 사업위험과 탄소배출권 위험으로 구분하고 탄소배출권 사업자의 참여 전략, 배출권 거래 전략, 배출권 가격전략, 사후적 위험 대응전략 등의 의사결정을 지원하는 것이다. 이를 통하여 기후변화협약 및 국내 배출권거래제도 하에서 온실가스 감축목표를 효율적으로 달성하는데 궁극적인 목적이 있다. 논문구성/논리: 본 연구는 전체 네 장으로 구성되어 있다. 첫 번째 장에서는 본 연구의 배경과 목적을 설명하며, 두 번째 장에서는 탄소배출권 사업에 대한 연구의 흐름을 검토하고 산업적 니즈와 비교하여 탄소배출권 위험 유형에 기반한 연구모형을 수립하여 사례연구 분석틀을 도출하였다. 세 번째 장에서는 국내 기업이 중국에 진출하여 추진한 국제 탄소배출권 사업을 중심으로 네 가지 위험유형에 대한 사례연구를 수행하였고, 마지막 장에서는 결론 및 향후 연구에 대한 시사점을 제시하였다. 결과: 사례연구를 통하여 전통적인 사업개발, 금융, 시공 및 운영과정에서 발생하는 위험과 탄소배출권 고유의 등록, 발행, 거래 과정에서 발생하는 위험을 평가하였다. 이에 따라 사업단계에 대한 참여방식과 역할에 따른 참여방식이 달라질 수 있음을 확인하고 탄소배출권 거래전략 수립 시 선도거래 전략, 가격전략, 개별사업에 특화된 다양한 위험관리 방식을 분석하였다. 독창성/가치: 탄소배출권 사업에 대한 기존연구는 거시적인 측면의 투자수익성 연구나 지속가능성 관점의 정책적 연구에 집중되어 있었다. 본 연구에서는 사업자들의 현실적인 의사결정 시점에 초점을 맞추어 탄소배출권 사업정보에 기반한 위험평가를 통하여 해외 사업참여 및 국제 탄소배출권 거래전략을 수립하는데 유용한 이론적 분석 틀을 제시하였다는 점에서 차별성이 있다. Purpose: The study aims to classify the risks involved in clean development mechanism projects into business and carbon risks, and support the decision-making of business participation, international carbon trade strategy, carbon price strategy, and post-risk management. In addition, the national target of greenhouse gas reduction can be achieved more efficiently, based on the carbon risk management framework. Composition/Logic: The paper consists of four chapters. The first chapter explains the background and objectives of this study. The research model for the case study in the second chapter is developed based on the project risk. Chapter three analyzes four case studies on the clean development mechanism in China as implemented by a domestic developer. The final chapter summarizes the results from the cases with research and practical implications, and suggests directions for future research. Findings: Four case studies show the traditional risks of business development, finance, construction, and operations, as well as carbon credit risks through registration, issuance, and trading processes. Participants in carbon businesses play different roles in consideration of project risks and carbon trading strategies, including forward contract and pricing decisions, which are also dependent on risk profiles. Originality/Value: Existing literature on carbon business has focused on the return on investment or sustainable development in the views of the macro economy or policy levels. This study explores risk analysis and decision making with project information on practical cases. The results support domestic firms in developing their own international carbon trading strategies with a theory-driven framework.

미래 행정 환경 변화와 재정 개혁의 방향

이원희 ( Lee Wonhee ) 한국행정연구원 2017 韓國行政硏究 Vol.26 No.4

소규모 개방경제의 조건에서 한국 경제 운영과 관련하여 건전 재정은 국가 신용도를 결정하는 매우 중요한 요소이다. 실물경제나 금융경제의 위기를 받쳐주는 대들보(cornerstone) 역할을 해야 하기 때문이다. 1997년 외환위기와 2008년 경제위기를 짧은 시간에 극복할 수 있었던 요인도 재정의 뒷받침으로 가능했다. 문제는 그것의 지속가능성이다. 예산은 1년 단위로 운영되고 있어서 장기적인 관점이 희석될 위험이 크다. 경제 성장기를 지원하던 1961년의 예산회계법 체계를 전면 개편한 2006년 국가재정법은 1997년 외환위기 이후에 재정 전략과 관리를 전면적으로 바꾸는 획기적인 노력의 결과였다. 그것은 노무현 정부에서 실험적으로 추진되던 3+1 재정 개혁에 대한 법적 뒷받침을 한 것이다. top down 결정방식(총액배분 자율결정), 국가재정운용계획, 재정사업 자율평가의 3가지 개혁과 이를 뒷받침하기 위한 프로그램 과목체계와 digital brain system은 OECD 국가의 모범사례가 되어 개발도상국을 지원하는 ODA 사업의 주요 항목이 되고 있다. 그러나 10년이 지나면서 급격히 진행된 저성장, 저금리, 저출산/고령화의 환경 변화에 직면하여 이러한 절차 중심의 개혁에 대한 필요성이 제기되고 있다. 2016년 기획재정부가 제출한 ‘재정건전화법’이 이를 상징적으로 보여주고 있다. 그러나 이에 대한 정치권의 대응은 아직 미온적이다. 이를 위해 총량적 재정규율, 배분적 효율성, 기술적 효율성으로 구분하여 주요한 재정 개혁의 과제를 정리하였다. 재정 개혁이 너무나 당연한 주제인 듯하지만, ‘누가 어떤 방식으로 할 것인지’의 전략적 관점에서 보면 쉬운 주제가 아니라는 것을 알 수 있다. 이와 관련하여 2가지 쟁점을 명확하게 해야 한다. 첫째는 누가 할 것인지를 결정해야 한다. 강력한 추진력을 확보하기 위한 위원회 조직이 필요하다. 둘째 과거 개혁에 대한 정확한 진단과 미래의 방향 설정을 기반으로 하여 진행해야 한다. As the Korea is under small and open economy, sound finance is a very important factor in determining national credit. It should serve as a cornerstone to support the crisis of the real economy and the financial economy. The financial crisis in 1997 and the economic crisis in 2008 could be overcome in a short period with the support of fiscal expansion. The problem is its sustainability. The budget runs on a yearly basis, so there is a great risk that the long-term perspective will be diluted. The 2006 National Fiscal Act, which fully reformed the 1961 Budget Accounting Law system that supported the economic growth period, was the result of a major effort to completely change fiscal strategy and management after the 1997 financial crisis. It is the legal backing of the 3 + 1 fiscal reform that was experimentally promoted by the Roh administration. Three reforms of the top down decision method, the national financial management plan, and the autonomous evaluation of the financial autonomy, as well as the program subject system and the digital brain system, are the best practices of the OECD countries. However, in the face of the rapidly changing environment of low growth, low interest rate, and low birth rate/aging environment changes, the necessity of reforming current procedures is being raised. This is symbolically illustrated by the ‘Fiscal Soundness Law’ submitted by the Ministry of Strategy and Finance in 2016. However, the politicians' response to this is still lukewarm. To accomplish the fiscal reform, I summarized major financial reforms by dividing them into 3 dimensions; aggregate financial discipline, allocative efficiency, and operational efficiency. Financial reform seems to be a very natural topic, but it is not an easy subject from a strategic perspective of ‘who will do what?’. Two issues need to be clarified in this regard. First, we have to decide who will do it. A committee structure is needed to secure a strong momentum. Second, it should be based on accurate diagnosis of past reforms and future direction setting.

광 경화성 수지를 이용한 파우더 기반의 3DP 공정 및 강도 특성

이원희(Wonhee Lee),김동수(Dongsoo Kim),김정수(Jungsu Kim),이택민(Taikmin Lee),신동윤(Dongyun Shin),이민철(Mincheol Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6

3DP(three dimensional printing) technology is one of SFF(solid freeform fabrication) technologies which have recently come into a spotlight due to its adaptability to various applications. This technology has a great advantage in terms of short fabrication time for a prototype at a low cost, especially when it comes with multi-nozzle inkjet printing technology. However, it has also a disadvantage since it requires additional curing time, after jetting a binder material, and post-processing time in order to increase the mechanical strength of a product. In this study, a novel 3DP process is proposed to overcome slow solidification and elaborate post-process by adopting photo curing method into the conventional 3DP process. Mechanical properties, such as tensile and bending strengths, of specimens fabricated with the proposed 3DP process were measured and compared with those fabricated with the conventional 3DP process. As a result, it is found that mechanical strengths of specimens from the proposed novel 3DP process show over 10 times higher than those from the conventional 3DP process.

독도와 울릉도 현무암질 암석의 마그마 기원 연구

이원희(Wonhee Lee),이현우(Hyunwoo Lee),김종욱(Jonguk Kim),오지혜(Jihye Oh),김동환(Donghwan Kim),김창환(Chang Hwan Kim),박찬홍(Chang Hong Park) 한국암석학회 2020 한국암석학회 학술발표회 논문집 Vol.2020 No.8

잉크젯 및 광경화 기술을 응용한 3차원 임의형상 제작

이원희(Wonhee Lee),김동수(Dongsoo Kim),김정수(Jungsu Kim),이민철(Mincheol Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11

3DP(three dimensional printing) technology is one of SFF(solid freeform fabrication) technologies which have recently come into a spotlight due to its adaptability to various applications. This technology has a great advantage in terms of short fabrication time for a prototype at a low cost, especially when it comes with multi-nozzle inkjet printing technology. However, it has also a disadvantage since it requires additional curing time, after jetting a binder material, and post-processing time in order to increase the mechanical strength of a product. In this study, a novel 3DP process is proposed to overcome slow solidification and elaborate post-process by adopting photo curing method into the conventional 3DP process. Mechanical properties, such as tensile and bending strengths, of specimens fabricated with thc proposed 3DP process were measured and compared with those fabricated with the conventional 3DP process. As a result. it is found that mechanical strengths of specimens from the proposed novel 3DP process show over 10 times higher than those from the conventional 3DP process.

해상 상태 및 선저여유수심을 고려한 연안 내 선박의 최적 항로 결정

이원희(Wonhee Lee),유원철(Wonchul Yoo),최광혁(Gwang-Hyeok Choi),함승호(Seung-Ho Ham),김태완(Tae-wan Kim) 대한조선학회 2019 大韓造船學會 論文集 Vol.56 No.6