• Journal of the Korean Association of Geographic Information Studies
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• v.5 no.4
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• pp.24-34
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• 2002

The purpose of this study is to estimate the ecological effect of DMZ for development and conservation of this area. Because of the political reason, field research and estimation of the ecological effect using field data is very difficult. Then we carried out the estimation of the ecological effect using Landsat ETM+ and ancillary data of digital maps. Because of military disturbance and agricultural activity of common people, NDVI of DMZ was very low value except the interior area of DMZ. According to the distance of DMZ, the variance of NDVI didn't show the logistic curve. This result has the reason as follows. The developing force at level plane of west and middle area reached to DMZ and we could concluded in that case of east area had been effect of regular cutting for view.

• Environmental and Resource Economics Review
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• v.20 no.2
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• pp.199-228
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• 2011

In this study, the effect on the economy-energy-environment gap among regions of reducing GHGs is analyzed under various scenarios, using a multiregional dynamic CGE model. Regions in Korea are classified as six metropolitan areas. Scenarios are set in three cases such as self-regulatory measures, carbon tax and emissions trading scheme. The reduction target under each scenario is again classified according to volume basis and intensity basis. In results, self-regulation is shown to deepen the economic divide mostly, followed by a carbon tax, emissions trading scheme in order. This result could be interpreted such that a system based on market incentives gives less effect on the gap among regions. However, market incentives based system is expected to take time to build. Thus in implementing policies to increase short-term effects of the reduction targets, complementary policies are needed to reduce the regional devide.

• KDI Journal of Economic Policy
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• v.10 no.2
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• pp.27-48
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• 1988

본고(本稿)에서는 이자율(利子率)의 실물경제(實物經濟)에 대한 파급구조(波及構造)의 중요한 부분으로 투자(投資)를 선택, 이자율(利子率)과 투자(投資)와의 관계를 실증적(實證的)으로 분석하였는데, 이는 첫째로 자율적(自律的)인 금융환경하(金融環境下)에서는 통화(通貨) 이자율정책(利子率政策)이 어떠한 운용수단(運用手段)을 사용하더라도 정책효과(政策效果)를 이자율(利子率)의 변동(變動)을 통하여 얻는다는 사실과, 둘째로 우리나라에서는 소비자금융(消費者金融)이 미미하므로 투자(投資)가 이자율(利子率)의 실물경제(實物經濟)에 대한 중요한 파급구조(波及構造)일 수밖에 없다는 선험적(先驗的) 판단(判斷)등에 근거한다. 본고(本稿)에 의하면, 첫째 이자율(利子率)의 변동(變動)은 최소한 2년간에 걸쳐 투자(投資)에 부(負)의 영향(影響)을 미치고, 둘째 제(第)1금융권(金融圈)과 제(第)2 사금융권(私金融圈)의 대표이자율(代表利子率)들(1년만기 정기예금금리(定期預金金利) 및 회사채(會社債) 유통수익율(流通收益率)로 본(本) 연구(硏究)에서 각각 정의(定義)) 간의 이자율차(利子率差)는 투자(投資)에 뚜렷하게 부(負)의 영향(影響)을 미치고, 세째 제(第)1금융권(金融圈) 이자율(利子率)의 투자(投資)에 대한 영향(影響)은 파급과정(波及過程)에서 많이 상쇄되는 것으로 나타났다. 따라서 첫째로 이자율정책(利子率政策)은 장기적(長期的) 안목(眼目)을 가지고 수립되어야 하며, 둘째 기업경영환경(企業經營環境) 개선(改善)시키고 이자율정책(利子率政策)의 유효성(有效性)을 제고(提高)시키기 위하여 이자율자유화(利子率自由化)는 이자율차(利子率差)를 축소시키는 방향으로 추진되어야 하며, 세째 이자율차(利子率差)의 축소는 이자율(利子率)의 부분적(部分的)인 조정보다는 금융부문(金融部門) 전반(全般)의 광범위한 자율자유화(利子率自由化) 및 구조개선(構造改善)을 필요로 한다.

• Journal of Global Scholars of Marketing Science
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• v.15 no.1
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• pp.105-120
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• 2005

The research regarding the important attribute which gives an effect to golf club membership purchase. 1990's as the golf boom as percentage shows the rapid increase of the golf course visitor and it grows, from 2001 are passing over ten million people golf course visitors. When purchasing golf club membership, it is important from the research which it sees the attributes which it thinks probably are what, it grasped and the scope of research did Seoul and the metropolitan area golf user in the object and it executed an empirical.analysis. In order to raise the reality and a reliability of research also it executed the collection and a Question investigation and a empirical analysis of various statistical data. The result of research a frequency analysis, descriptive analysis, factor analysis, multiple regression analysis and a correspondence analysis used the SPSS/PC+ 10.0 which and is a statistics package program. The results show that four dimensions of image were derived from 14 important attributes, using a factor analysis. A correspondence analysis indicates that statistically significant relationships existed between some of Golf club membership factors with respect to the demographic variables of income and Golf frequency. A multiple regression analyses also indicate that most of Golf club membership factors had great impacts on visitors' recommend.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.379-381
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• 2004

내장형 실시간 시스템은 점차 소형화, 다기능화 하여 그 복잡도가 증가하고 있다. 또한 제약사항이 일반적인 정보시스템 보다 더 까다롭다. 신뢰성 있고 안정적인 내장형 실시간 시스템을 구현하기 위해서 소프트웨어 공학의 적용이 필요하며, 특히 소프트웨어 아키텍처의 적용을 필요로 한다. 이에 본 논문에서는 내장형 실시간 시스템 개발 중 최적의 소프트웨어 아키텍처를 선정하기 위해서 필요한 소프트웨어 아키텍처 평가 절차를 제시한다. 측정기법(Measuring Techniques)과 질문기법(Questioning Techniques)을 혼합하여 분석을 수행한다. 측정기법을 위해서는 실 프로토타이핑(Real Prototyping)을 사용하여 질문기법을 위해서는 체크리스트를 사용한다 이를 통하여 소프트웨어 개발 생명주기의 초기단계에서 이리 목표시스템의 품질을 예측하고 위험을 미리 식별할 수 있다.

• Journal of Power System Engineering
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• v.7 no.4
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• pp.74-81
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• 2003

An LQ controller design method is proposed for effective anti-sway control of boom type crane in this paper. It is important for high productivity that the sway of a load is controlled as fast as possible when the trolley arrives to the destination with maximum velocity. To prove the effectiveness of the proposed LQ controller. simulations and experiments using the boom type crane as experimental device is carried out. Tracking performance for a step type reference and robustness for the change of working environment such as the change of load weight and parameters produced by a wire rope and disturbance by the wind arc proved by the experiment. It will be examined that boom type crane can be applied to industrial fields through experiment in this paper.

• Proceedings of the KIEE Conference
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• 2003.10b
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• pp.119-121
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• 2003

The magnetic bearing is an important element for high-speed system, such as semiconductor equipment and machine tools. Particularly, The homopolar magnetic bearing has the advantages of lower power losses, more space for heat dissipation and coil winding. This paper deals with analysis and comparison of the homopolar magnetic bearing according to four different PM structures. On the basis of these results, we find one homopolar magnetic bearing superior to the others. finally, this paper derive force characteristic equation for this model and deals with comparison of between analytical and FE results.

• Proceedings of the KIEE Conference
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• 2003.10b
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• pp.72-74
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• 2003

This paper presents a design and analysis solutions for the general class of iron-cored permanent magnet linear synchronous motor with Halbach (PMLSM). In our design and analysis, rotor consisting of permanent magnets rotor and slot less iron-cored coil stator are treated in a uniform way via vector potential. For one such motor structure, we give analytical formulas for its magnetic field, back electromotive force, inductance of winding coil, and trust force. We also provide performance comparisons of three types according to iron-cored and PM array.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2000.11a
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• pp.9-16
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• 2000

1970년대의 급격한 경제 성장시기에 건설된 구조물들은 30년 이상의 사용으로 인해 노후화가 심각하며 대형 산업재해의 가능성을 가지고 있다. 따라서 노후 설비들의 안전 한 사용을 위해서는 소재 물성의 정기적인 진단을 통한 정확한 수명예측이 필요하다. 그러나 기존의 소재 물성평가를 위한 표준 방법인 일축인장 및 파괴역학 시험의 경우, 변형 및 파괴 거동에 대한 많은 정보를 제공하고 있지만, Bulk 형태의 표준시편이 필요하여 시편을 채취하는 과정에서 설비와 구조물에 노치에 의한 손상이 가해질 수 있어 구조물의 안전성을 오히려 해치는 결과를 초래할 수 있다. 또한 채취 중의 응력완화 및 손상에 의해 표준시편도 본래 현장 구조물과 다른 물성을 가질 수 있다.(중략)

• Proceedings of the KIEE Conference
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• 2004.10a
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• pp.80-82
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• 2004

This paper deals with design of linear switched reluctance motors(LSRM) which drive a testing machine of eddy current magnetic repulsion system using Halbach array and conducting plate. The design method employing finite element method and parameter estimation method and a characteristic of LSRM according to variation of parameter is introduced.