• 자원ㆍ환경경제연구
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• 제24권1호
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• pp.141-164
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• 2015

최근 국가온실가스배출량 측정과 관련하여 소비기반 배출량에 대한 관심과 연구가 증가하고 있다. 소비기반 배출량은 정의상 국제무역에 함유된 온실가스 배출량과 직접적인 관계가 있다. 본 연구에서는 에너지 연소에 따른 이산화탄소 배출에 한하여 한국의 주요 교역상대국들에 대한 최종재 수출에 함유된 상품별 국내외 탄소배출 비중을 계산할 뿐만 아니라 한국의 자국 최종수요에 기인한 탄소배출과 외국 최종수요에 기인한 탄소배출을 분해하여 이를 주요 교역상대국들과 비교한다. 또한 한국의 주요 교역상대국들에 대한 수출에 얽혀 있는 탄소사슬을 분석하고 탄소사슬별 탄소집약도를 계산하여 주요 특징들을 살펴본다.

• 복식문화연구
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• 제17권1호
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• pp.177-188
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• 2009

SCM as the important marketing strategy enhance the firm's efficiency and compatibility in global market environment such as global outsourcing. Firms adopted SCM realized the need to evaluate precisely the performance of SCM. In spite of importance of SCM, there was not much intention and research to measure SCM performance in textile fashion industry. Therefore, the purpose of this case study was to measure performance of supply chain management in textile fashion business using BSC(Balanced Score Card) to measure not only financial perspective but also non-financial perspectives such as customer perspective, internal business perspectives, financial perspective, and innovation & learning perspective. The questionnaire developed by the reviews of the literature was adopted for this study. The results of this study showed that SCM performance was enhanced from the point of customer perspective(cost, quality, time, service), financial perspective(cash cycle time, inventory turn over, inventory obsolescence, return on asset, return on investment, capacity utilization), and innovation & learning perspective(cost for human resource management, service for human resources). But there was same performance level regarding internal business perspective(lead time, cost for manufacturing process, product quality control, productive flexibility for time, quantity, and variety). Therefore, we should keep close relationship and two way communication among supply chain members to promote better SCM performance.

• 한국병원경영학회지
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• 제17권4호
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• pp.21-31
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• 2012

This is a case study of Gangnam S University Hospital applying a par level transfer system for reagent materials. The purpose of this study is evaluated on the cutting down on inventory expenses and medical service revenue in the point of resource based view. The data was acquired through the financial statement of Gangnam S Hospital for the fiscal year 2008, 2009, 2010 and 2011, and compared with the Korea health industry statistics index for hospital accounts based on the materials in Korea Health Industry Development Institute. The results of the study are as follows. Medical reagent materials expenditure cut down as 305 million won through 2009 fiscal year. Medical profits for the Gangnam S University hospital's income statement in 2011 show well over acquired 3.37 billion won through the enlarged diagnostic test numbers. In conclusion, Gangnam S University Hospital health statistics's index shows very high profits. The results of this study have some limitations in terms of generalization as only one hospital in Seoul. Further studies with relationship inventory performance and enlarged reagent materials are expected in this area.

• 대한산업공학회지
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• 제33권2호
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• pp.246-253
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• 2007

All of the machines in a production line can be classified into bottleneck and non-bottleneck machines. A bottleneck is a resource whose capacity limits the throughput of the whole production facility. This paper addresses a batch sizing problem at the bottleneck machine. Traditionally, most batch sizing decisions have been made based on the EOQ (economic order quantity) model where setup and inventory costs are considered while throughput rate is assumed to be given. However, since batch size affects the capacity of the bottleneck machine, the throughput rate may not be constant. As the batch size increases, the frequency of the setup decreases. The saved setup time can be transferred to processing time, which results in higher throughput. But, the larger batch size may also result in longer lead time and larger WIP inventory level. This paper presents an alternative method to determine batch size at the bottleneck machine in a manufacturing line. A linear search algorithm is introduced to find optimal throughput rate and batch size at the same time. Numerical examples are provided to see how the proposed method works and to investigate the effects of some parameters.

• Journal of Forest and Environmental Science
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• 제27권2호
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• pp.113-118
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• 2011

This study was carried out to analyze annual diameter growth characteristics for major 11 tree species using the data for Gangwon province of the National Forest Resources Inventory in 2007. The annual diameter growth of coniferous species was 5.02 mm, 4.70 mm, and 3.90 mm in Korean white pine, Japanese larch, and Korean red pine, respectively. In growths of the deciduous trees, dogwood, basswood, and cork oak had 3.55 mm, 3.48 mm and 3.01 mm, respectively. Average of the annual diameter growths for all species was 3.38 mm. The relationship between diameter growth and age class showed that the growth rate decreased for all species as age increased. The age class II had the highest annual diameter rate. In relation of the stand density(trees per hectare) and diameter growth, the diameter growth tended to decrease as the stand density increased for most species, especially Korean white pine, cork oak, and basswood. Finally age had the highest value in the correlation coefficients between measurement factor and growth rate regardless of species.

• 한국산업정보학회논문지
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• 제27권6호
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• pp.105-114
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• 2022

본 연구에서는 조수조건이 고려된 벌크항만의 하역 최적화를 위한 정수계획모형을 제안한다. 특히, 본 연구에서는 실제 벌크항만의 운영 환경과 조건들을 반영하여 체선료(Demurrage Cost)와 조출료(Dispatch Money)를 모두 고려한 하역비용 최소화를 목적함수로 설정하고, 벌크항만의 서비스 수준을 결정하는 최소재고 제약조건 또한 고려한다. 일반적으로 비선형 함수 형태로 표현되는 체선료 계산식을 선형화(Linearize)하여 스케줄 해상도를 향상하고, 조수조건을 고려한 선석할당 문제의 경우 전통 자원할당 모형에서 필수적인 Big-M 제약식이 대체 가능함을 확인한다. 실험결과를 통해 기존 모형 대비 계산복잡도와 전역최적성이 크게 향상 가능함을 검증한다.

• 대한토목학회논문집
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• 제37권4호
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• pp.681-691
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• 2017

본 연구에서는 전과정평가 방법론을 활용하여 교량용 탄성받침 제조 공정에 대한 전과정목록(LCI) DB를 구축하고, 교량의 환경부하평가시 신뢰성 향상율을 분석하였다. 교량용 탄성받침의 영향평가 결과, 6대 영향범주 중 자원고갈, 지구온난화, 광화학산화물 생성 범주 순으로 주로 영향을 미치는 것으로 나타냈다. 투입물의 기여도에서는 대부분의 영향범주에서 후판이 가장 높게 나타났다. 본 연구를 통해 구축된 교량용 탄성받침 전과정목록(LCI) DB를 교량 환경부하평가에 적용한 결과 환경부하량은 평균 0.53% 증가하였으며, 투입자재의 금액기준 Cut-off는 11.36% 증가하였다. 교량용 탄성받침 LCI DB 구축을 통해 향후 온실가스 배출량 산정, 환경부하평가 등의 신뢰성을 향상시키고 현재 생산기술에 기반한 자료를 제공할 수 있을 것으로 기대된다.

• 청정기술
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• 제21권1호
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• pp.33-38
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• 2015

본 연구에서는 전과정평가 방법론을 활용하여 액체 이산화탄소 제조 공정에 대한 전과정목록 DB를 구축하였다. 특성화와 정규화 결과, 액체 이산화탄소의 제조는 자원소모, 지구온난화 범주가 주로 영향을 미치며, 다음으로 산성화, 부영양화, 광화학적산화물생성 순이었다. 투입물의 기여도에서는 대부분의 영향범주에서 전력이 가장 높았으며 산성화와 부영양화에는 대기배출이 높은 기여도를 나타내었다. 오존층 파괴 범주의 경우 암모니아가 주된 원인이었다. 본 액체 이산화탄소 LCI DB를 통하여 탄소성적표지 등의 국가적 차원의 환경 전략 활용이 활성화되기를 기대한다.

• 한국사회복지학
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• 제64권4호
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• pp.57-87
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• 2012

본 연구의 목적은 국내 최초의 사회복지실천기술 척도를 개발하는데 있다. 사회복지실천기술 관련 국내외 문헌을 기본 자료로 삼아 사회복지사의 실천기술들을 확인하고 선별하였으며 국내의 실천적 특성을 담아내기 위해 현장 전문가의 의견을 반영하여 예비문항을 만들었다. 다양한 실천현장에서 근무하는 370명의 사회복지사를 대상으로 예비문항을 평가하였다. 탐색적 요인분석을 통해 30개 문항이 제거되고 27개 문항으로 구성된 사회복지실천기술 활용 척도가 개발되었다. 척도는 5개의 하위척도로 세분화된다. 탐색적 요인분석을 통해 추출된 사회복지실천기술 척도의 요인구조는 확인적 요인분석에서도 확인되었다. '준비 및 사정 기술' 척도는 사회복지실천의 초기단계에 사용되는 기술, '변화촉진 기술' 척도는 개입단계에서 사용되는 실천기술로 주로 변화에 대한 동기를 강화시켜주는 기술, '종결 및 평가 기술' 척도는 전문적 관계를 종결하고 개입결과를 평가하는 기술, '자원연계 및 활용 기술' 척도는 클라이언트의 문제해결을 위해 지역 내 자원을 적극적으로 활용하는 기술, 그리고 '윤리적 실천기술' 척도는 사회복지 전문직의 가치와 윤리에 부합하는 실천기술을 측정한다. 종합하면, 사회복지실천기술 활용 척도는 시작단계에서부터 종결단계에 이르기까지 일반적 사회복지실천과정에서 필요한 실천기술, 윤리적 실천을 위해 필요한 실천기술, 환경 체계의 활용에 초점을 둔 실천기술을 측정하는 도구이다.

• 한국조경학회지
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• 제18권3호통권39호
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• pp.171-190
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• 1990

It is the purpose of this study to address how to manage the urban vegitation using the concept of Urban Forestry which is relatively new to Korea. When we consider the Urban Forestry as a science, We should understand it interdisciplinary subject which includes Forestry, Horticulture, Urban Planning, Landscape Design, Landuse Planning, Business and Humanities. It may say that people and tree are the fundermental components of Urban Forestry. So there are two ways of Urban Forestry Applications-How people care for trees and How trees care for People-. For the application, this study places the focus on the monetary valuation, tree inventory system and traditional forestry application to urban forest management. Pubic Relation, Communication, Ordinances and Budget are also mentioned as a part of Urban Forestry Policy. Monetary valuation of trees and forests is very important for the proper cognition of their real value. So that, they may be equated and weighed against conflicting uses which would cause to be removed or severely mutilated. A tree inventory system which is the essential part of urban tree management can provide the pertinent information about the present condition of urban tree resource. It may aid in reducing the subjectivity of tree management decisions and stimulate them to be made rapidly and can help reduce potential municipal liability by identifying serious problems in time for corrective maintenance practices to be applied for the maximize community benefits and minimimize public nuisances or hazards. Managers can derive the information from the inventory and use it for the various management plan. When we see the structure of tree inventory system as one of the data base management system, Computer is the best equipment for the efficient management plan. Public relation and communication is also important factors to care the people for urban vegetation management. Volunteer management system is a good example for the public relation and communication. Those skills are need to develop for using the priceless, valuable human resources. Budget holds the key to the execution of Urban Forestry. Good inventory can provide for efficient budgeting stratiges through it's scientific analysis for the way of maximum benefits and minimum costs. Forest can be play a vital role for the aesthetic improvement and recreation in the city. This study suggests that the traditional sivicultural application not only improve the quality of scenic beauty and recreation but also the products of timber. So it is more needed to study for strong and scientific application to urban forest management.