• 한국항공운항학회지
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• 제21권1호
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• pp.39-44
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• 2013

The amount of greenhouse gas (GHG) emissions has been increasing steadily over the last 4 years, averaging 6.8 percent a year, due to the growth of low cost carriers and the increased demand for air transportations. For the aviation GHG reduction, various fuel saving activities are implemented in many areas such as high-efficiency aircraft and bio-fuel development in the technical part and low carbon flight procedures, short cut route development in the operational approach. Among the various reduction technologies, we focused on low carbon flight procedures that are crucial to GHG reduciton and suggested a reduction effect according to target implementation rate using by fuel saving estimation data in each aircraft type.

• 상하수도학회지
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• 제30권1호
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• pp.51-58
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• 2016

On account of the increase in water demand and climate change, droughts are in great concern for water resources planning and management. In this study, rainfall characteristics with stationary and non-stationary perspectives were analyzed using Weibull distribution model with 40-year records of annual minimum rainfall depth collected in major cities of Korea. As a result, the non-stationary minimum probable rainfall was expected to decrease, compared with the stationary probable rainfall. The reliability of ${\xi}_1$, a variable reflecting the decrease of the minimum rainfall depth due to climate change, in Wonju, Daegu, and Busan was over 90%, indicating the probability that the minimal rainfall depths in those city decrease is high.

• 한국유기농업학회지
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• 제19권1호
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• pp.3-21
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• 2011

This paper tried to find various ideas for the purpose of increasing the demand for domestic bean which is the main raw material of bean curd products. To accomplish this objective, purchasing behavior of the current consumers were surveyed and the consumer evaluation of the products were investigated. Using experiment conjoint analysis, consumers' marginal willingness to pay for several important attributes of the products were derived. Among the attributes analyzed, the origin of the material bean turned out to be the most important attributes of all.

• 한국농공학회논문집
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• 제55권3호
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• pp.1-7
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• 2013

The dam plan quantity of constructive and water supply quantity of present time are showing a difference with change in climate and augmentation of water demand for multipurpose dams in Nakdong river basin. But revaluates a water supply ability the method or the process is official for is not taking a position, so actual condition applies the plan quantity of dam constructive. Considers various situation of actual multipurpose dam from research sees consequently and in K-WEAP is an integrated water resources evaluation plan model applies as water permit availability multipurpose dam, currently water permit availability comparison, analyzed. In this study, the natural daily flow data and apply the dimensions of the reservoir, and for more than 30 years of the long-term water balance analysis conducted by Date Nakdong river basin can supply reservoirs are large quantity of permits available is presented.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1574-1586
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• 2008

Railway is the most effective transportation than any other traffic. But due to the its expensive maintenance fee and various components like roadbed, rail, rollingstock, electric and signal etc, the construction cost of the railway is usually higher than highway. Such a reason, a lot of cost and period are needed to complete the railway project. In addition that considering the decreasing of the SOC budget, the investment in the railway industry is getting hard than ever. This study analyzed the cost, term of work, freight & passenger transportation demand of the wide area railway electrification project and main line improvement project. And it compared the estimation value and real value of the projects like cost and period etc. And this study surveyed the economic feasibility including factors which are not considered in the feasibility study guide. With those results, This study suggest the project management and evaluation method to enlarge the efficiency of the railway construction project.

• 한국농공학회논문집
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• 제53권4호
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• pp.39-47
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• 2011

The aim of the study is to predict potential evapotranspiration and crop water requirement using meteorological data from MIROC3.2 with A1B scenario. Increase of evapotranspiration due to temperature rise can be observed out of the analysis, while effective rainfall decreased. The evapotranspiration elevation results in large amount of crop water requirement in the paddy farming. It can be seen that rainfall intensification at non-irrigation period brings effective rainfall decrease, while contributes to higher demand of crop water at irrigation period. It is necessary to secure additional water resources to adapt the climate change. It is expected that estimation on potentialevapotranspiration in this study can be used for formulation of master plan of water resources.

• 한국시뮬레이션학회논문지
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• 제8권1호
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• pp.63-76
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• 1999

Recently in manufacturing environment, manufacturing order is characterized by unstable market demand, shorter product life cycle, a variety of product and shorter production lead time. In order to adapt this manufacturing order, flexible manufacturing systems(FMS) in manufacturing technology advances into the direction that machines become further versatile functionally and that tools are controlled by fast tool delivery device. Unlike conventional FMS to mainly focus on part flow, it is important to control tool flow in single-stage multimachine systems(SSMS), consisting of versatile machines and fast tool delivery device. This research is motivated by the thought that exact estimation of tool competition at part release in SSMS enhances the system performance. In this paper, in SSMS under dynamic tool allocation strategy to share tools among machines, we propose real-time part release and tool allocation algorithms which can apply real factory and which can improve system performance.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 A
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• pp.74-76
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• 2003

As more and more housing complex will be developed in the future, this paper tries to survey for the estimation of power demands in these areas. For the selection of areas for the survey, in the case of housing complexes, selection of residential and non residential buildings is made by city size in consideration of local characteristics. For general hospitals, sports facilities and government buildings of the non residential building category, metropolitan areas, where these facilities are concentrated, are surveyed.

• 수산경영론집
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• 제36권3호
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• pp.25-35
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• 2005

This paper analyzes urban residents' preference on blue tourism using a survey data. The result show that even thought urban resident are unaware of blue tourism, people who have experienced blue tourism set a high value on it. Urban Resident tend to buy services of lodging, fisheries goods purchase about blue tourism, when they hope to blue tourism. These results indicate that there is a lot of potential demand for blue tourism. The results of this paper could be an important information to develop the blue tourism.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2018년도 춘계 종합학술대회 논문집
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• pp.35-36
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• 2018

영화는 하나의 높은 부가가치의 문화상품이며 영화산업도 한 나라의 문화를 반영할 수 있는 전력적인 산업이다. 중국 영화는 1978년 개혁 개방 이후 빠르게 발전하여, 특히 2016년부터 중국 정부는 "중국 영화산업 촉진 법안"을 반포하여 중국 정부는 영화산업을 적극적으로 지지 및 촉진하여 미래에 대해 강한 성장세를 보일 수 있다. 그러나 중국 영화 산업의 제도가 선진국과 달라, 또한 중국의 영화 심사제도의 경직성과 영화산업 구조의 불균형성으로 인해 중국 영화공급 및 수요에 항상 불균형에 빠져있는 문제들이 있다. 이런 문제점을 극복하기 위해 본 논문은 중국 영화에 대한 수요함수를 추정함으로써 정부의 정책 수립 및 산업적 지도에 도움이 되거나 투자자에게 참고도 되는 목적이다. 이러한 연구의 목적을 달성하기 위하여 본 논문은 Eviews 8.0 이용해 중국 통계국의 통계 데이터를 분석하여 중국 영화 상품에 대한 수요함수를 추정하는 중심으로 실시하였다. 향후 중국 영화 상품 수요함구가 좀 더 미시적인 소비자 선호별, 지역별 구분하여 엄밀한 분석을 필요하다.