• 제목/요약/키워드: End-of-Life Recovery

검색결과 70건 처리시간 0.03초

Life-Cycle Engineering : A state-of-the-art survey

  • 이기숙;서광규
    • 한국산학기술학회:학술대회논문집
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    • 한국산학기술학회 2004년도 춘계학술대회
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    • pp.335-338
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    • 2004
  • Life-Cycle Engineering(LCE) is a decision-making methodology that considers environmental and cost needs during the product life-cycle. Environmental conscious design and manufacturing has become more and more important and it has been enforced by governmental regulations and used as trade restriction. LCE involves integrating environmental consideration into new product development including design, material selection, manufacturing processes and distribution of the product to the consumers, plus the end-of-life management such as disassembly, material recovery, remanufacturing of the product after discarding it. In this paper, a state-of-the-art survey of LCE is presented.

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사물인터넷 디바이스의 폐기 처리 정보를 활용한 객체 식별자, 모바일 RFID 및 QR 코드 구현 (Implementation of Object Identifier, Mobile RFID and QR Code Exploiting End-of-Life Treatment Information of Internet of Things Devices)

  • 서정욱
    • 한국정보통신학회논문지
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    • 제24권3호
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    • pp.441-447
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    • 2020
  • 전 세계적으로 매년 약 5천만 톤의 전기 및 전자 폐기물이 발생하고 있는 상황에서 사물인터넷 디바이스가 2025년 약 750억 개에 달할 것으로 예상하고 있다. 그러나 사물인터넷 디바이스의 폐기 처리에 필요한 식별 기법에 대한 연구는 미미하다. 본 논문에서는 이러한 문제를 해결하기 위해 사물인터넷 디바이스의 재활용 가능률과 재생 가능률, 각 부품의 재활용률 및 재생률 등의 EoLT(End-of-Life Treatment) 정보를 포함한 식별자를 제안하며, 객체 식별자, 모바일 RFID 및 QR 코드로 구현한다. 구현된 객체 식별자와 모바일 RFID는 통신 네트워크를 통해 원격 서버와 연동하여 사용될 수 있고, 구현된 QR 코드는 스마트폰 앱을 통해 간단히 사용될 수 있다.

한국 노인의 허약 경험: Colaizzi의 현상학적 방법으로 (Experience of Frailty in Korean Elderly: A Phenomenological Study Utilizing the Colaizzi Method)

  • 박진경
    • 대한간호학회지
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    • 제47권4호
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    • pp.562-574
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    • 2017
  • Purpose: This study attempts to explore the subjective experience of frailty among elderly individuals in Korea. Methods: From June to August in 2014, 11 elderly persons who had experienced frailty in a community were interviewed. For data analysis, the method suggested by Colaizzi was applied as a phenomenological method. Results: According to the analysis, the study participants' frailty process was structured in seven categories: (a) 'natural phenomenon with ageing,' (b) 'life force comes to an end,' (c) 'the light in my heart turns off,' (d) 'unavoidable situation,' (e) 'continuous and connected vicious cycle,' (f) 'the limit of recovery energy already passes,' and (g) 'life is supported by someone's help.' Conclusion: The frailty experience in the participants is a natural process of aging, which cause vicious cycle acting with each other among physical, psychological, and social health. It is said that the cycle of frailty was started from weight loss and insufficient sleep, and boostered by pain. The participants from repetition of the vicious cycle become exhausted and pass the threshold of their recovery energy at some points. If they meet with sudden accidents such as falling, traffic accident and so on, they become to live a dependent life supported by someone's help in a moment. To prevent frailty and worsening conditions in Korean elderly individuals, it is recommended to provide a interventional programs using this study's results.

도시 숲 산림치유프로그램 교육 및 활동이 정서적 쉼에 미치는 효과 - 치유회복환경지각, 주의회복, 여가활동만족을 중심으로 - (Effects of Urban Forest Healing Program Education and Activities on Emotional Rest - Focusing on Healing Recovery Environment Awareness, Attention Recovery and Leisure Activities Satisfaction -)

  • 윤선희;신창섭;홍종숙;정영미
    • 한국콘텐츠학회논문지
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    • 제22권6호
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    • pp.386-399
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    • 2022
  • 본 연구는 도시 숲 산림치유프로그램 교육 및 활동이 정서적 쉼(치유회복환경지각, 주의회복, 여가생활만족)에 어떠한 영향을 미치는지를 확인하려는 목적이 있다. 이를 위해 38명을 대상으로 실험군(산림치유프로그램교육 및 실습), 대조군(프로그램 미참여)으로 나누어 연구를 진행하였다. 연구결과, 실험군의 경우는 프로그램 사후에 정서적 쉼 요소인 치유회복환경지각, 주의회복, 여가활동만족 모두에서 통계적으로 유의하게 향상되었고, 대조군의 경우는 사후에 정서적 쉼에 대한 변화가 없었다. 또한 참여자 그룹 간 정서적 쉼 차이에 대해서는 사전과 사후에 모두 그룹 간 차이가 있었는데, 사전 차이에 비해 사후 정서적 쉼 차이가 훨씬 더 크게 나타났다. 결론적으로 산림치유에 대한 교육을 정기적으로 받고 실제 산림치유활동을 한 사람들은 그렇지 않은 사람들에 비해 정서적 쉼을 더 높게 경험하는 것을 알 수 있다. 이는 단순히 산림활동에 대한 긍정적 인식을 가지고 임의로 산책 활동하는 것보다 적절한 프로그램을 통해 지속적인 동기부여 및 정기적인 실천이 치유회복환경에 대한 인식을 높이고 주의회복을 증진시키며, 여가생활에 긍정적 효과를 줄 수 있음을 시사한다.

Reverse Logistics를 위한 OSGi 기반 RFID 미들웨어 연구 (A Study of OSGi Based RFID Middleware for Reverse Logistics)

  • 황성일;이상완
    • 산업경영시스템학회지
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    • 제32권4호
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    • pp.72-78
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    • 2009
  • Reverse logistics is the process of planning and controlling the recovery flow of end of life products. Industry is increasingly being confronted with the need to solve several reverse logistics issues because of not only stringent environmental legislations but also economic reasons. Recently, thanks to the advent of emerging technologies, such as RFID, enhancing the productivity of reverse logistics operations has been highlighted. The application of RFID technology is going beyond forward logistics, which is the delivery of manufactured goods to consumers, and being expanded, though not frequently yet, to reverse logistics, which includes return, recovery, reuse, reproduction and disposal. However, it requires a deep insight for the research of reverse logistics and new environment. In this regard, we studied effectiveness by applying RFID middleware technology to reverse logistics.

반응표면법을 이용한 폐자동차 범퍼 파쇄물의 색채선별공정 최적화 연구 (Optimization of Color Sorting Process of Shredded ELV Bumper using Reaction Surface Method)

  • 이훈
    • 자원리싸이클링
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    • 제28권2호
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    • pp.23-30
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    • 2019
  • 폐자동차 범퍼 파쇄물 재활용을 위하여 색채선별법을 도입하였다. 색채선별법은 기존의 비중, 입도 차이에 의한 선별이 어려운 물질을 색상 차이를 이용한 카메라와 영상 분석기법으로 분리하는 선별법이다. 본 연구에서는 반응표면법 중 BBD (Box-Behnken Design)를 적용하여 실험을 계획하고 최적 조건을 도출하였다. 색채민감도, 피드투입량 및 입자크기의 영향을 분석하였으며, 회귀분석과 통계적인 방법에 기초하여 2차 반응 모델을 획득하였다. $R^2$ 및 p-value는 각각 99.56%, < 0.001로 타당하였으며, 추정된 최적조건은 색채민감도 32%, 피드투입 200 kg/h, 입자크기 33 mm 조건에서 94.1%의 회수율이 나올 것으로 예측하였다. 실제 실험을 통한 회수율은 93.8%로 나타나 해당 모델이 적절함을 확인하였다.

재생품 공급량이 불확실한 주문시분해 환경에서의 생산 및 재제조 계획 (Production and Remanufacturing Planning under Uncertain Supply of Recovery Cores and a Disassemble-to-order Environment)

  • 강창묵
    • 한국경영과학회지
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    • 제38권2호
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    • pp.43-63
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    • 2013
  • Remanufacturing is a process of recovering end-of-life products into serviceable parts for producing new products. Due to the limited supply of recovery cores to remanufacture, a remanufacturing firm also needs to produce or procure new parts for fulfilling the demand. This paper is targeted for solving the problem of determining the optimal amount of newly produced and remanufacturing parts, which is called production and remanufacturing planning (PRP) problem, under uncertain supply of recovery cores. The new production mitigates the risk of insufficient core supply while it takes more costs than the remanufacturing. The PRP model in this paper also considers disassemble-to-order (DTO) environment, in which multiple kinds of parts are remanufactured from multiple products on order of the parts. Whereas existing studies presents only heuristic solutions for DTO remanufacturing, this paper provides an exact solution for this problem and analytical sensitivity of the involved cost parameters, adopting multi-dimensional newsvendor modeling and stochastic linear programming techniques. The result shows that production and remanufacturing plans for multiple products are mutually dependent, and a change of cost parameters involved in only one part is propagated to all other parts.

여성 말기신부전 환자의 혈액투석 적응경험 (Adaptation Experience among Hemodialysis of Women with End-Stage Renal Disease)

  • 박의정;김영혜;손현미
    • 성인간호학회지
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    • 제27권5호
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    • pp.493-504
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    • 2015
  • Purpose: This study was a qualitative study to explore and understand the adaptation experiences of hemodialysis among women with End-Stage Renal Disease (ESRD) and to develop a substantive theory using the grounded theory method. Methods: Participants were 15 female patients who underwent hemodialysis for ESRD treatment from three general hospitals. The data were collected through in-depth individual interviews. Results: The adaptation experience of participants was emerged as a process of taking care and enduring. There were four adaptation stages as a negative, despair, receptive, and maintenance period in reference to hemodialysis. The causal conditions were a vague expectations of recovery and refusal to undergo hemodialysis. The core phenomenon was that of confinement to dialysis machine. The contextual conditions for this phenomenon were the loss of femininity. They used action/interaction strategies such as transition their life with a focus on hemodialysis, seeking information, and learning how to take care of their body. Through this process, they had a strong will to live or had sustained their life. Conclusion: These results indicate that there is a need for nurses to understand the different steps of adaptation experiences of the given patient population. It is necessary for nurses to support them to lead their life as much normal as possible and improve the adaptation experience of ESRD.

과학기구 기낭의 해상 회수를 위한 분리장치 개발 및 비행시험 (Separation Device Development and Flight Test for Marine Recovery of Scientific Balloon)

  • 심규진;강정표;김휘호;이관중
    • 한국항공우주학회지
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    • 제47권1호
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    • pp.49-58
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    • 2019
  • 과학기구는 임무 종료시 전체 플랫폼의 안정적인 회수가 가능한 비행 시스템이다. 과학기구의 회수는 인명 및 재산피해를 고려하여 인구밀집도가 낮은 평야지대에서 주로 진행된다. 하지만 대한민국의 경우 밀집한 산악지형과 반도의 제한으로 인해 해상회수가 고려되어야 한다. 이러한 운용환경에서 기낭은 해상 착수 후 발생할 수 있는 심각한 해양오염 때문에 반드시 회수되어야 한다. 따라서 본 논문에서는 기낭의 위치추적기 및 방수체계가 결합된 분리장치를 개발하였다. 장치는 데이터 송수신, 분리, 방수 체계로 구성되었고 대한민국의 환경을 고려하여 제작하였다. 장치의 성능과 기낭의 낙하 궤적은 목표고도 20km 플랫폼의 분리 실험과 영압력 기구의 해상회수를 진행하여 검증하였다.

대퇴경부 골절 환자의 입원 생활 (The Hospital Life of the Patient with Femoral Neck Fracture)

  • 김경자;지성애
    • 간호행정학회지
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    • 제2권1호
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    • pp.35-56
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    • 1996
  • Nowerdays, the increase of traffic accidents and old age population make the Femoral Neck Fracture(FNF) patients increase. By the improvement of education and standard of living the patients demand better medical service than before. This study is designed to give practical help for the FNF patients by observing their hospital life and establish practical nursing strategies for the FNF patients. For these purposes the Ethnographic Participant Observation was adopted. By this study is focused on the hospital life patient's view. For this end, the field study adopted orthopedic ward in the C University Hospital with 400 beds in Seoul. The object patients of the study were twelve patients. The patients experienced five stages : Embarrassment, Conflict, Stability, Independent, and Extension Stage. The findings and prepared nursing strategies are stated as follows. First, in the Embarrassment Stage they suffered embarrassment, anxiety, pain, they could not do ordinary things. The patients who accidental fractures had anxiety from unfamiliar tests and from hospitalization itself. They lamented that they could not ordinary things, and do nothing but obeying the hospital, and endure the pain. They recognized the changed environment and resigned themselves to life in the ward. In this stage, full openness by the nurses is needed. Second, the attribute of the Conflict Stage were conflict, fear, curiosity, belief, reflection. When they sign the consentment form, they experience conflicts about the possibility of complication, fear of recovery from anesthesia, curiosity about the operation procedure, post - operation state, reflection on their past life, and promise to care for their family members after discharge and keep their religious life faithfully. And they accepted the operation depending on God, believing in modern medicine, and the surgeon. Asking for their changed informations, they expected positive results from the operation. In this stage, an empathic attitude by the nurses is needed. Third, the attribute of the Stability Stage were relief, gratitude, difficulty with excretion, and pain. When they awoke from anesthesia, they felt relief because of a the end of the operation, but they experienced extreme pain, difficulty of excretion in bed. They accepted the changed environment and expected recovery. In this stage, support by the nurses is needed. Fourth, the attributes of the Independence Stage were freedom, exercise, nurturing, anxiety, and discomfort. When they ambulated and exercised, they experienced freedom. They showed exhibited weakness of the digestive organs and discomfort hospital's space, structure, and facilities, the delay of medical certificate issue the lack of prompt response by the medical agents. They ate nurturious food and felt anxiety on the end of hospital life and returning to their ordinary life. They showed the independence of overcoming their environment by increasing exercise and expected their discharges. In this stage, respect by the nurses is needed for the patients to, overcome their environment and prepare for their independence. Fifth, the attributes of the Extension Stage were pessimism, isolation, dissatisfaction, and pain. Accompanied injury and old age made their ward life extend to over seven weeks. They exhibited weariness, melancholy, skeptisis, general pessimistic feeling, and desperation caused by their isolated life. They experienced the digestive discomfort caused by the prolonged medication and psycological pain caused by long-time hospitalization. As a, result, their dissatisfaction on the human, physical, and systematic environments had been increased. They acquired critical power and sought for something to do spending their time. They expected vaguely about the returning of their ordinary life. In this stage, counseling is needed by the nurse to overcome positively their psychological, social, and physical problems. The process of the FNF patient's ward life starts from the dependent state, when they are hospitalized, and gradually progresses to self-fulfillment in order to keep independent life. As a result, the FNF patients showed "Response in Challenge" or "Adaptation in Conflict" through their experiences of social, physical, and psychological difficulties.

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