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회수보장 및 재활용이 제품 품질, 가격 및 반품 정책에 미치는 영향
유승호,손진현 한국생산관리학회 2017 한국생산관리학회지 Vol.28 No.4
This study investigates the effect of the buyback with recycling decision on product quality, return policy, and sales price in a supply chain consisting of a manufacturer and a retailer. This study extends the consumers’ purchasing and return behavior models in Yoo (2017) to reveal the effect of buyback and recycling of returned items on the supply chain’s overall performance. We compare two supply chain models—wholesale price contract and the buyback contract with recycling—to provide important implications for practitioners. Buyback with recycling always ensures higher profits for the manufacturer, retailer, and overall supply chain, regardless of any environmental change. However, there are no significant differences in the profit improvement ratios of the two players. This is not only due to production cost savings from recycling but also due to the generous return policy and the greater number of demand requests induced by the buyback contract. Moreover, we can expect the profit improvement effect from the buyback contract with recycling, especially if the environmental changes are unfavorable. However, we need to note that the efficient management of the recycling process is a prerequisite for the adoption of buyback with recycling. 본 연구는 제조업체와 판매업체가 존재하는 공급망 상에서 고객 행동에 중요한 영향을 미치는 제조업체의 제품 품질 의사결정, 그리고 판매업체의 제품 가격과 반품 정책 의사결정을 통합적으로 다룬 연구이다. 본 연구의 목적은 고객의 반품이 존재하는 폐쇄형 공급망 상에서 반품 제품의 회수보장 계약과 이의 재활용이 기업 및 공급망의 전반적 성과에 어떠한 영향을 미치는지 분석하는 데에 있다. 이를 위해 연구의 기본으로 유승호 (2017)에서 소개한 고객의 구매 및 반품 행동 모형을 받아들이고 이를 확장한다. 본 연구는 다양하게 나타날 수 있는 공급 계약 형태에 따른 두 공급망 모형을 제시하는데, 이들은 가장 기본적 형태의 공급 계약인 도매가 계약과 반품 제품의 회수를 보장하는 회수보장 계약이다. 두 공급망 모형을 비교하여 본 연구는 공급망 현실에 다음과 같은 중요한 시사점을 제시한다. 회수보장 계약은 재활용에 의한 생산 비용 절감과 관대한 반품정책으로 인한 수요의 촉진으로 어떠한 경우에도 더 높은 수준의 전체 공급망 이익, 제조업체 및 판매업체의 이익을 유도한다. 이러한 이익 개선은 공급망 내 모든 업체에 고르게 나타나므로 큰 저항 없이 회수보장 계약을 통한 반품 제품의 재활용을 추진할 수 있다. 또한 본 연구는 기업이 불리한 외부 환경 변화에 처했을 때 보다 적극적으로 회수보장을 통한 재활용 정책을 도입하여 더 높은 비율의 이익 개선을 기대할 수 있음을 밝혔다. 하지만 이를 위해 재활용 프로세스를 효율적으로 관리할 수 있는 충분한 환경 역량을 갖추는 것이 선결 과제임을 잊지 말아야 한다.
소규모 실험실을 이용한 천장복사냉방패널의 열적 성능평가
유승호,조수 대한건축학회 2005 대한건축학회논문집 Vol.21 No.9
This study analyzes the thermal performance measurement method and a real example of a radiant ceiling cooling panel which is needed before the application of a radiant ceiling cooling system for a real building. A prototype of radiant cooling panel was constructed and installed under the ceiling of a test room. A small test room was constructed , corresponding to KD1 of FGK(Specialist association for building climate in Germany) with the geometry, length×width×height ; 2.4m×1.2m×1.5m. The thermal performance of the cooling panel was measured according to the DIN 4715-1(Cooling surfaces for rooms-Part 1: Measuring of the performance with free flow; Test rules, length×width×height ; 4m×4m×3m) in a small test room. A small test room for a thermal performance analysis of cooling ceiling panel could be useful for a development of a radiant cooling system, if the test result that the cooling power in a small test chamber is about 15% lower than one in a normal test chamber is considered.
유승호,손장열 대한설비공학회 1999 설비공학 논문집 Vol.11 No.6
To optimize a heating and cooling system, we need an exact solution lot radiant heat transfer in any form of room or building. This paper describes the solution method of view factor by the area weighted average and graphical method to calculate the radiant heat exchange or daylighting level in any form of room or building. This study shows that the area weighted average and graphical methods have many points of merits(calculation speed, correctness and calculation capability in an arbitrary form of room shapes etc.) compared with existing methods
턱관절 장애 치료 시 매선침 활용 현황에 대한 설문 연구
유승호,강준혁,서상우,서준원,김세윤,임정현,지수환,전현준,남상수,구본혁,김고운,조재흥,송미연 한방재활의학과학회 2023 한방재활의학과학회지 Vol.33 No.3
Objectives This study is for reporting current status and strategies of thread embedding acupuncture (TEA) in temporomandibular joint disorder (TMD) using web-based survey. Methods Survey was conducted online via E-mail among Korean medicine doctors registered with the Association of Korean Medicine. The questionnaire is developed by Korean medicine doctor in Kyung Hee University Hospital at Gangdong. The survey consisted mainly of multiple-choice questions on the current status and strategies of TEA for TMD. Results Total of 427 doctors responded. TEA was mostly used for ‘Cosmetic purpose and others’ with 287 respondents (67.2%), and 102 respondents (23.9%) having experience with TEA for TMD. The most common purpose for TEA for TMD was ‘Improving muscle contraction and tension’ with 290 respondents (67.9%). The average interval was reported 2.12 weeks, and the most common response for the number of treatments was five sessions with 127 respondents (29.7%). The most common criterion for determining the treatment site was based on anatomical structure, accounting for 92.7%. The most effective anatomical structure was the ‘Masseter muscle’ with 83.1%, followed by the ‘Temporal muscle’ with 51.8%. TEA direction for TMD was dominant in ‘affected side’ for all muscles. Conclusions Through a survey, we can investigate clinical usage of TEA for TMD. This study can be helpful in creating standardized criteria for TEA on TMD in the future.