• Nuclear Engineering and Technology
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• 제39권6호
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• pp.691-696
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• 2007

Nuclear energy programs around the world increasingly find themselves at the nexus of potentially conflicting demands from both domestic and international stakeholders. On one side, the rapid growth in demand for electricity coupled with the goal of reducing carbon emissions calls for a significant expansion of nuclear energy. On the other, stakeholders are seeking ever greater safety, environmental, security, and nonproliferation assurances before consenting to the construction of new nuclear energy facilities. Satisfying the demand for clean energy supplies will require nuclear energy operators to find new and innovative ways to build confidence among stakeholders. This paper discusses two related concepts which can contribute to meeting the needs of key stakeholders in cost effective and efficient ways. Structured processes and tools for assessing stakeholder needs can build trust and confidence while facilitating the "designing-in" of information collection systems for new facilities to achieve maximum efficiency and effectiveness. Integrated approaches to monitoring facilities and managing the resulting data can provide stakeholders with continued confidence while offering operators additional facility and process information to improve performance.

• 대한안전경영과학회지
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• 제11권3호
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• pp.11-18
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• 2009

Unless certain limitation is increasing the number of the job type will be inevitable in the future because of development of industry, adaptation on speedy life style, and leisure oriented nuclear family style. In this paper, a prospective model of supply and demand of work force has been developed basing on various categories of industries and patterns about employees to look over efficient supply and demand of work force suiting employment of work force policies. In this paper, after Analyzing job preference, we have noticed a more stable job system and the results showed significant improvements over the existing job system.

• 자원ㆍ환경경제연구
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• 제1권1호
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• pp.1-25
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• 1991

The domestic liquefied natural gas project has been carried out as a national energy scheme since the late 1980's in Korea. The natural-gas supply for civilian demand is limited to the Kyung-In area. In addition, seven major city gas corporations which now participate in the project occupy the monopolistic service area. In this study, objective cost evaluation criteria for gas distribution and an improved proposal in the evaluation method are suggested. They will go forward in solving the problems to promote demand and prevent excess profit or deficit according to the physical characteristics of the monopolistic service area.

• 공업화학
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• 제33권5호
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• pp.532-537
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• 2022

The need for obtaining treated wastewater that meets high quality standards for discharge or reuse necessitates the use of highly efficient wastewater treatment techniques. In the present study, experiments have been carried out to reduce the concentration level of biological oxygen demand (BOD), chemical oxygen demand (COD), and total dissolved solids (TDS) from the wastewater sample. Treatment of sample of a real municipal wastewater collected from a sewage treatment plant (STP) was carried out in an electrochemical membrane bioreactor (EMBR). The EMBR was operated continuously for five days, and readings were taken at regular intervals. This paper has experimental results conducted in EMBR that indicate reduction of BOD, COD, and TDS levels of up to 32.25%, 29.25%, and 31.93%, respectively. Further, it was observed that a current of magnitude of 0.00752 mA was generated due to the metabolic activities of bacteria present in municipal wastewater, which gradually decreased day by day due to the decay of bacteria.

• 한국수소및신에너지학회논문집
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• 제34권3호
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• pp.246-255
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• 2023

Due to lack of hydrogen charging stations and hydrogen supply compared to the supply of hydrogen vehicles, social phenomena such as 2-hour queues and restrictions on charging capacity are occurring, which negatively affects the spread of hydrogen vehicles. In order to resolve these problems, it is essential to have a strategic operation of the hydrogen charging stations. To establish operational strategies, it is necessary to derive customer demand patterns and characteristics through the analysis of sales data. This study derived the demand patterns and characteristics of customers visiting hydrogen charging stations through data analysis from various perspectives, such as charging volume, charging speed, number of visits, and correlation with external factors, based on the hydrogen sales data of off-site hydrogen charging stations located in domestic residential areas.

• KDI Journal of Economic Policy
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• 제12권4호
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• pp.3-20
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• 1990

다부문모형(多部門模型)은 산업련관자료(産業聯關資料)를 비롯한 산업정보자료(産業情報資料)를 이용하여 장기의 구조변화를 분석 전망하고 총생산성(總生産性)과 요소가격(要素價格)의 변동에 의한 산업경쟁력(産業競爭力)의 추이를 분석하여 중기의 성장전망(成長展望)을 시산(試算)하는 연간(年間) 계량모형(計量模型)으로 25개 산업부문(産業部門)의 1,300여개(餘個)의 구조식(構造式) 정의식(定義式)으로 구성된다. 국내가격과 국제가격(國際價格)의 차이가 산업 무역구조에 영향을 미치고 국내생산과 요소가격이 산업별 요소수요(要素需要)를 결정하며 요소수요와 요소가격에 의하여 소득(所得)이 결정되고 소득과 가격이 산업별 소비지출(消費支出)을 결정한다 ; 산업별 총생산성과 상대가격(相對價格)이 투입산출계수(投入産出係數)에 영향을 미치고 투입산출계수와 상대가격이 산업별 생산비용(生産費用)을 결정하며 생산비용과 경쟁수입가격(競爭輸入價格)을 고려하여 국내가격이 결정된다 ; 생산성증가(生産性增加)와 임금상승(賃金上昇)의 산업간(産業間) 차이가 상대가격(相對價格)을 변화시키고 이로 인하여 산업(産業) 무역(貿易) 고용구조(雇傭構造)가 선진국(先進國)과 동질화(同質化)되는 지식(知識) 기술집약화(技術集約化) 과정이 전개된다.

• 한국버섯학회지
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• 제11권4호
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• pp.303-307
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• 2013

한국에서의 복령연구는 형태학적 관찰 및 특징, 채집기, 재배방법, 복령균의 배양학적 특성연구 (홍과이, 1990), 1994년 농촌진흥청에서 복령의 인공재배법이 개발되면서 드링크제, 제빵제재 등의 식품화연구도 2000년대 초까지 진행되었다. 복령의 에탄올추출물은 폐암, 난소암, 피부암, 중추신경암, 직장암 세포 성장에 높은 저해활성을 나타내는 등 항암효과 등의 기능성이 입증되었다(권 등, 1998). 하지만 현재까지도 복령의 수요를 천연채집 및 수입에 의존하고 있어서 재배시 고품질, 다수확을 위한 인공재배방법을 개선해야할 필요가 있다. 최근에는 경북농업기술원과 신농버섯연구소 등에서 지상에서 재배법을 시도하기도 하였다. 또한 최근의 재배사례에서는 부적절한 재배시기를 선택하는 등의 사유로 실패사례를 간혹 볼 수 있다. 최근 복령의 주요 수출국인 중국이 수출을 제한하여서 지난 4년간 복령가격이 113% 인상되는 등 복령의 국내공급량이 절대적으로 부족한 실정이다. 따라서 현재까지 개발된 복령의 지상재배법과 지하재배법의 장점만을 이용한 새로운 방법의 복령인 공재배기술의 확립이 요청된다.

• 산업공학
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• 제17권1호
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• pp.71-77
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• 2004

At the present time, container transportation plays a key role in the international logistics and the efforts to increase the productivity of container logistics become essential for Korean trucking companies to survive in the domestic as well as global competition. This study suggests an approach for determining fleet size for container road transportation with dynamic demand. Usually the vehicles operated by the transportation trucking companies in Korea can be classified into three types depending on the ways how their expenses occur; company-owned truck, mandated truck which is owned by outsider who entrust the company with its operation, and rented vehicle (outsourcing). Annually the trucking companies should decide how many company-owned and mandated trucks will be operated considering vehicle types and the transportation demands. With the forecasted monthly data for the volume of containers to be transported a year, a heuristic algorithm using tabu search is developed to determine the number of company-owned trucks, mandated trucks, and rented trucks in order to minimize the expected annual operating cost. The idea of the algorithm is based on both the aggregate production planning (APP) and the pickup-and-delivery problem (PDP). Finally the algorithm is tested for the problem how the trucking company determines the fleet size for transporting containers.

• 무역상무연구
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• 제50권
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• pp.109-136
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• 2011

Bank Guarantee system is commonly used as useful financial instruments to support various overseas and domestic business activities by providing bank guarantees. Therefore, it will be able to develop as a useful socio-economic useful system. However, some procedural problem can arise from the processes under demands for payment. Therefore, it is very important to review the requirements of the demand for payment and compliance standard for the examination of a presentation under the guarantee system. It is necessary to examine main issues under the revised URDG 758. The URDG introduced the same examination principle of "need not be identical to, but shall not conflict with' as that of UCP 600. The main changes of the URDG 758 like this imply the mitigation of the compliance standard for examination. So, This paper is to provide a comparative study of the regulations and laws for the examination standard and propose their implications and practical notes under bank guarantee system. For this purpose, this study will be examined the practical and legal issues focusing on the relative regulations of the revision URDG 758. It will also be reviewed and compared with the URDG, ISP98, UCP 600 and so on.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2004년도 추계 종합학술대회 논문집
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• pp.531-537
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• 2004

본고는 국내 나노기술 분야의 정보자원 현황 및 향후 정보 수요에 대한 연구를 수행한 것으로서, 나노기술전문가 500여명을 대상으로 설문조사를 통하여 나노기술 정보자원 현황 조사, 나노기술 수집현황 조사, 나노기술 정보수요 조사 등을 실시하였고, 이를 기술 분야별, 콘텐츠 종류별로 분석 연구하였다. 또한 정보 이용자들의 정보 활용도 및 만족도를 연구하였다. 본 연구를 통해서 나노기술정보 활용 방안과 전문콘텐츠 제작을 위한 방향을 설정하고 나아가 나노기술 정보정책을 수립하는데 유용한 제안을 도출하고자 한다.