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이재국 ( Jae Kuk Lee ),김옥현 ( Ock Hyun Kim ) 충북대학교 산업과학기술연구소 2014 산업과학기술연구 논문집 Vol.28 No.1
As fossil fuels are causing environmental pollution and resources are vanishing, new renewable energy becomes hot issue in all nations. Ocean wave is one of the important renewable energies because it has very high energy density and persists day and night in all seasons. A new type of wave power generator is being suggested in this paper to convert wave energy into electrical one. According to wave power generator suggested in this paper, it consists of a body and multiple small floats connected to the body with arm rods. The body consists of a head, columns, a weight and a floating tank which imposes buoyancy on the body such that the head is being kept above the sea water. Inside the head a electric power generator is mounted and being rotated by driving torque come from the up-and-down motion of small floats due to the wave. The body and the floats are to be designed such that the body stands almost still even the waves while the floats are moving up-and-down almost in phase with the wave. Due to the different dynamic characteristics of the floats and the body, relative motion occurs which produces the driving torque of the electric generator. Computer simulation has been done to estimate capability of electrical power generating of the power generator. Mathematical model of electric power generator, Mathematical model of electric power generator was derived through some experiments to relate revolutional speed and the electrical power output. The wave was modeled according to official data about East Sea from a national institute, KHOA(Korea Hydrographic and Oceanographic Administration.) Some important design parameters are chosen and their optimal values are determined by examining the electrical power output numerically. Those computer simulation works have been done by using MATLAB. As a result it is concluded that the wave power generator may produce 5 kW with 6 small floats.
이재국(Jae Kuk Lee),이승희(Seung Hee Lee),차경은(Kyung Eun Cha) 한국FP학회 2016 Financial Planning Review Vol.9 No.4
본 연구는 주택공급을 위한 택지개발이나 주택재개발 등 공익사업을 시행함에 있어 필수적 절차인 정부의 토지보상 제도를 분석하였다. 사인의 재산을 강제적으로 취득할 수 있는 공익사업의 시행자와 토지소유자간 갈등의 핵심은 보상가격으로서 감정평가업자에 의해 산정된다. 토지보상가격 결정에 영향을 미치는 핵심요인을 분석하고 특히 사업시행자와 토지소유자 및 감정평가업자가의 영향력을 분석하기 위해 모형을 세분하였다. 모형 (1)은 감정평가업자를 규모와 특성에 따라 대형과 중소형 법인으로, 사업시행자는 민간과 공공부문으로 구분하였다. 모형 (2)는 민간 기업과 조합으로 민간부분을 세분하였으며, 모형 (3)은 공공부문을 국가 · 공기업 · 지방자치단체로 나누어 분석하였다. 공적지가인 개별공시지가의 10% 증가는 토지보상액을 6.79% 정도 상승시키는 것으로 나타나 변수 중 보상액에 미치는 영향이 가장 높은 것으로 분석되었으며, 토지에 대한 잠재력이 높을수록 토지 보상액은 증가하는 것으로 나타났다. 제도상의 경제적 유인결과는 감정평가업자의 경우 대형보다 중소형일 때 보상액이 높게 나타났고, 조합은 조합원 이익을 위해 공공부문에 비해 높은 보상액을 추구하는 것으로 분석되었다. 민간 기업은 소송비용을 낮추기 위해 조합에 비해 보상액이 높은 것으로 추정되며, 공기업이 지방자치단체에 비해 보상액이 높은 것으로 나타났다. 토지소유자 · 사업시행자 · 감정평가업자의 경제적 유인이 토지보상액에 반영되는 것으로 분석됨에 따라 이를 제거할 수 있도록 중립성이 유지되는 방향으로 보상평가 제도를 개선할 필요성이 요구된다. This study analyzed the land compensation system of the government of Korea, which is an essential procedure in the enforcement of public works projects, such as housing lot development or housing reconstruction. The conflict which often arises between landowners and public works project operators, who can forcibly acquire personal assets, stems from the fact that the level of compensation is calculated by a land appraiser. To analyze the determinants and assess how the economic incentives of the project operator, landowners and land appraisers affect the level of compensation, three models were used. Model (1) divides the land appraisers into large scale corporations and small- and medium-sized corporations. The project operators, who are the subject of the eminent domain, are divided into those operating in the private and public sectors. Model (2) subdivides the private sector into private compan and redevelopment association, and Model (3) divides the public sector into national and public enterprises and local government. mall and medium-sized appraisal business set a higher compensation compared to large-sized ones. associations having a private incentive also sought higher compensation. Overall, the compensation of private companies was higher the association. This was primarily due to the incentive to lower the cost of lawsuit and financ. Public enterprises also set a higher compensation compared to local governments reflecting the preference for early initiation of the project.
김도형 ( Do Hyung Kim ),이재국 ( Jae Kuk Lee ),서정용 ( Jeong Young Seo ),박영식 ( Young Seek Park ),김동석 ( Dong Seog Kim ) 대구가톨릭대학교 자연과학연구소 2011 자연과학연구논문집 Vol.9 No.1
The study investigated the degradation of N, N-Dimethyl-4-nitrosoaniline (RNO, indicator of the generation of OH radical) by using multi plasma reactor.The purpose of this study is made of multi plasma reactor. The multi plasma reactor made up two single reactor which consist of a quartz dielectric tube, titanum discharge (inner) and ground (outer) electrode. The effect of shape of reactor(shape 1, shape 2, shape 3), electricity process(process 1, process 2) were evaluated. The experimental results showed that shape 1 and shape 2 were not suitable for multi plasma reactor. The shape 3 is suitable for multi plasma reactor. Among the experimented parameters, between single reactor and the other were not important parameters which are influenced the decomposition of RNO. Electricity process1,2 were not suitable for multi plasma reactor.
임차인보호규정 변화에 따른 상가임대차 구조개선 방안에 대한 연구
남영우(Young Woo Nam),이재국(Jae Kuk Lee) 한국FP학회 2016 Financial Planning Review Vol.9 No.1
최근 우리나라는 주택가격의 상승률이 낮아지고 저금리가 지속되면서 재무설계에서 수익형 부동산에 대한 관심이 높아지고 있다. 상업용 부동산의 수익률이 금융상품이나 주거용 부동산보다 높게 나타나고 있기 때문이다. 하지만 이러한 상업용 부동산에 대한 투자증가는 임차인과 임대인간의 분쟁이 증가하는 등의 문제를 발생시키고 있다. 이러한 분쟁 들이 언론 등을 통해서 알려지면서 사회적 약자인 임차인에 대한 보호규정이 강화되고 있다. 현재 한국에서는 상가임대차보호법이 제정되어 실행되고 있으나 선진국에 비해서 미흡하다는 주장이 강하게 제기되고 있기 때문이다. 2015년에 상가임대차보호법의 개정을 통해서 임차인의 권리금 보호규정이 만들어진 것도 이러한 사회적 분위기를 보여준다. 이러한 임차인 보호규정의 강화는 재무설계에서 상가에 투자한 임대인의 수익성악화 및 위험증가요인이 된다. 본 연구에서는 현행 한국의 임차인 보호규정을 선진국의 보호규정과 비교하여 향후 변화방향을 예측하였다. 특히 임차인의 권리금을 보호하는 규정이 임대인의 수익률에 미치는 영향을 분석하여 수익률의 하락가능성을 제시하였다. 마지막으로 향후 임대인과 임차인이 상호 협력적인 관계를 유지할 수 있는 대응방안으로 percentage rent와 리츠제도의 활용 등을 제시하였다. South Korea has recently seen a decrease in the increase rate of housing prices, and a continuing in low interest rates, thereby raising investors’ interest in profitable properties., due to the higher profitability in commercial properties compared to that of financial products or residential properties. Nevertheless, the such increasing investment in commercial properties is increasingly creating disputes between lessees and lessors, among other problems. Media reports of these disputes have bolstered regulations for protecting the social weak lessees. Although the Commercial Building Lease Protection Act has been enacted and is being implemented in South Korea, the act is yet to be further improved compared to the equivalent situation in developed countries. Reflecting these requirements, the Commercial Building Lease Protection Act was amended in 2015 to establish regulations for protecting the lessee’s premiums. This strengthening of lessee protection regulations may weaken the profits of the lessee’s investment in commercial property. This study compared South Korea’s current lessee protection regulations with those of developed countries with the research aim of predicting the direction of future trends. In particular, the effects on the lessor’s profitability of that the regulation to protect lessee’s premiums were analyzed so as to determine the possibility of decreasing profitability. Lastly, the percentage rent and REITs system were examined as measures to maintain cooperative relations between the lessor and lessee.