• 한국도서관정보학회지
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• 제39권3호
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• pp.161-186
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• 2008

우리나라 사서교사의 양성현황과 수요전망을 통해서 사서교사 양성체제와 수급의 문제점을 지적하고 대안을 제시하였다. 특히 사서교사의 교육체제, 양성기관 현황 및 양성인원을 바탕으로 사서교사의 양성능력을 전망하고, 사서교사 선발현황과, 한국도서관협회 기준, 학교도서관진흥법의 기준을 적용하여 필요한 사서교사의 수요를 분석하였다. 그 결과 사서교사 수급불균형의 문제점을 지적하였고, 미래의 수요에 필요한 적정 인원을 양성하기 위한 방법으로 일반대학 문헌정보학과 교직과정 승인인원의 재조정과 사범대학의 문헌정보교육과의 신설을 제안하였다.

• 한국토양비료학회지
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• 제9권3호
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• pp.117-132
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• 1976

Fertilizer has been played greately on the agricultural development as well as food production and agriculture has also promoted the development of fertilizer industry. There were, however, many difficulties between supply and demand of fertilizer throughout the decade. In this regard, this paper is involved with present situation and prospect of commercial fertilizers, in view of domestic and international scheme on resources, production, and demand within the limited information. Brief history of commercial fertilizer in Korea has outlined for the introduction and fertilizer consumption per unit area also discussed.

• 한국항해항만학회지
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• 제30권10호
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• pp.801-808
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• 2006

조선분야의 부가가치 창출은 조선기자재 산업 활성화에 있다 하지만 우리나라 조선 분야 경쟁력은 내실보다는 외형에 치우치고 있는 것이 현실이다. 특히 조선기자재 분야는 선진국과 비교했을 때 빠른 시간 내에 경쟁력을 확보해야 하는 과제를 안고 있다. 이에 본 논문에서는 조선기자재 산업의 경쟁력 제고를 위해 조선기자재 특성, 조선기자재 산업 현황, 수요공급현황, 국산화 현황 등을 분석하고 이를 근거로 조선기자재 산업의 경쟁력 확보방안을 도출하는데 그 목적을 두었다. 이러한 연구를 토대로 조선기자재 산업 발전방향을 모색하고 더불어 경쟁력 확보에 필요한 근거 자료를 제공하고자 한다.

• 산업경영시스템학회지
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• 제40권4호
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• pp.29-37
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• 2017

This papers focuses on remanufacturing processes in a closed loop supply chain. The remanufacturing processes is considered as one of the effective strategies for enterprises' sustainability. For this reason, a lot of companies have attempted to apply remanufacturing related methods to their manufacturing processes. While many research studies focused on the return rate for remanufacturing parts as a control parameter, the relationship with demand certainties has been studied less comparatively. This paper considers a closed loop supply chain environment with remanufacturing processes, where highly fluctuating demands are embedded. While other research studies capture uncertainties using probability theories, highly fluctuating demands are modeled using a fuzzy logic based ambiguity based modeling framework. The previous studies on the remanufacturing have been limited in solving the actual supply chain management situation and issues by analyzing the various situations and variables constituting the supply chain model in a linear relationship. In order to overcome these limitations, this papers considers that the relationship between price and demand is nonlinear. In order to interpret the relationship between demand and price, a new price elasticity of demand is modeled using a fuzzy based nonlinear function and analyzed. This papers contributes to setup and to provide an effective price strategy reflecting highly demand uncertainties in the closed loop supply chain management with remanufacturing processes. Also, this papers present various procedures and analytical methods for constructing accurate parameter and membership functions that deal with extended uncertainty through fuzzy logic system based modeling rather than existing probability distribution based uncertainty modeling.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.3-11
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• 2002

This paper presents the trend of low voltage and high current technology for DC-DC converters. It can be said that the output voltage of the on-board power supply has been rapidly moving forward a low voltage in proportion to the minuteness of the semiconductors. As for as its speed is concerned, the change of the market situation seems to be faster than that of R&D for the low voltage and high current products put out by power supply manufacturers. Here, the present situation and the trend of non-isolated type step-down DC-DC converter and isolated type DC-DC converter called "Brick" will be taken up mainly from the fellowing point of view. -low voltage and high current keeping up with the current demand for the latest telecommunication networks and broadband. -build-up of the total solution for dispersion system power supply. In this paper, an explanation is given to mainly concerning to the newest products in the supplier's position.

• 대한토목학회논문집
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• 제39권2호
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• pp.351-359
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• 2019

날로 악화되고 있는 주차문제의 개선을 위하여 지자체에서는 관련법에 의거하여 주차장 수급실태조사를 주기적으로 실시하고 있다. 하지만 기존 평가 방법에서는 조사방법의 한계로 인해 주차공급 및 규제에 의해 수요가 억제된 상태 하에서 발생하는 주차수요를 조사하고 있어, 주차 수급문제 진단의 핵심이 될 수 있는 대상지역 내 주차 이용수요의 발생 총량을 정확하게 파악할 수 없는 실정이다. 또한 현황연도만을 대상으로 분석을 실시하고 있어, 장래 주차 문제에 대한 예상과 분석에는 한계를 보이고 있다. 본 연구에서는 이러한 문제를 개선하기 위하여 기존 평가 방법과 차별성을 갖는 개선된 주차장 수급실태 평가 방법을 제시하고, 기존 평가 방법을 적용한 분석 결과와의 상호 비교를 통하여 개선된 평가 방법이 주차문제 개선을 위한 장기적 관점의 주차정책 수립에 유용할 수 있음을 보여준다.

• 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.

• 디지털융복합연구
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• 제2권1호
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• pp.161-175
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• 2004

In this paper we present a review of school information education about technical high school in domestic. The review is based on an extensive research in the practical literature. Business of various forms such as industry, education, and medium is appearing by supply of Internet of all the world. The Information Technology market is developing by leaps and bounds among them, but suitable school information education disgrace and improvement plan were not readied in domestic Information Technology and communication situation. Therefore, this paper?wishes to satisfy purpose by school information education improvement plan and manpower practical conditions about ERP education. So that, is used to accelerate medium and small enterprises information through qualitative, quantitative valuation of medium and small enterprises information manpower supply and demand as well as domestic school information.

• 농업과학연구
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• 제28권2호
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• pp.132-146
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• 2001

Rice cultivation is not only the main resource of farm income and staple food but also the root of cultural life of Korean people. Korean government has carried out irrigation water development with heavy investment to cope with water shortage in rice fanning as a link of the five years economic development plans. In spite of the continuous accomplishment of irrigation water development, the marginal benefits-costs of irrigation water has not been studied. Owing to the government full support for the operation and maintenance of irrigation facilities, price of irrigation water as a membership fee could not be formed as the municipal and industrial water prices. Accordingly this study is aimed at identifying firstly the marginal benefits-cost of irrigation water, secondly deriving the macro-econometrics models as supply and demand functions of irrigation water and thirdly examining the marginal benefits-cost ratio. The trends of supply and demand prices of irrigation water were estimated annually. Considering the marginal benefits-cost ratio as 1.3, it was identified that additional irrigation water development projects still have an economic feasibility under the present economic situation in Korea.

• Journal of Electrical Engineering and Technology
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• 제12권5호
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• pp.1789-1797
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• 2017

It is necessary to charge electric vehicles in order to drive them. Thus, it is essential to have electric vehicle charging facilities in place. In the case of a household battery charger, the power similar to that consumed by a household with a basic contract power of 3kW is consumed. In addition, many consumers who own an electric vehicle will charge their vehicles at the same time. The simultaneous charging of electric vehicles will cause the load to increase, which then will lead to the imbalance of supply and demand in the distribution system. Thus, a smart charging scheme for electric vehicles is an essential element. In this paper, simulated conditions were set up using real data relating to Korea in order to design a smart charging technique suitable for the actual situation. The simulated conditions were used to present a smart charging technique for electric vehicles that disperses electric vehicles being charged simultaneously. The EVs and Smart Charging Technique are modeled using the Electro Magnetic Transients Program (EMTP).