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정상훈(Sanghoon Jung),이상복(Sangbok Lee) 한국신뢰성학회 2017 신뢰성응용연구 Vol.17 No.2
Purpose: The purpose of this study is to develop a quality assurance model and to determine appropriate warranty period for a guided missile using its field data. Methods: 10 years of actual firing data is collected from the defense industry company and military. Parametric maximum likelihood estimation for a reliability function is determined with the data. Results: The reliability function estimates average lifetime of the missile. That function shows a user requirement, 80% reliability (lifetime) is come up when 8 years have passed, which is longer than the estimates in the missile’s development phase. Conclusion: Quality assurance warranty for a guided missile must be established with actual test data. It is necessary to update and modify the reliability prediction and the warranty period with actual field test data.
전환기 발달장애인의 어머니가 작업지도원으로서 경험하는 본질에 대한 탐구
정상훈(Jung Sanghoon),정신모(Jeong Shinmo) 한국사회복지학회 2016 한국사회복지학회 학술대회 자료집 Vol.2016 No.4
본 연구의 목적은 전환기 발달장애인 대상 일터 개발에 있어 함께 참여한 발달장애인의 어머니가 작업지도원으로서 경험한 본질을 Colaizzi(1978)의 현상학적 방법론에 따라 탐구하는 데 있었다. 이를 위해 작업지도원으로 참여한 4명의 어머니들을 심층 면담하여 축어록을 작성한 뒤 이를 분석하였다. 그 결과 65개의 의미 있는 진술이 도출되었고, 이를 보다 큰 의미를 담는 범주로 묶어 정리한 결과 총 4개의 주제군이 드러났다. 그 주제군은 부정적 마음 추스르기, 내 아이의 가능성 발견하기, 양가감정 경험하기, 또 다른 부정적 마음의 용솟음이었다. 이를 토대로 전환기 발달장애인 어머니의 작업지도원으로서의 역할 가능성에 대한 사회복지적 함의를 제시하였다. The purpose of this study was to explore the essence experienced by mother of children with development disability as job coach participating in workplace development of those with development disability at the transition period through phenomenological methodology of Colaizzi(1978). For that, we had an in-depth interview of 4 mothers who had participated as job coach and subsequently prepared and analyzed the verbatim report. As a result, 65 meaningful statements were derived and classified into a category for greater significance. Finally, 4 subject groups were identified. Those 4 subject groups consisted of mitigation of negative mind-set, discovery of potentials in my children, experience of ambivalent emotion, and generation of another negative ideas. Based on that, we presented implications of social welfare for role potential of mothers as job coach aiding children with developmental disability in transition period.
브라질 리우데자네이루의 산타마르타 파벨라 개선사업에 관한 연구
정상훈(Jung, Sanghoon) 한국도시설계학회 2014 도시설계 : 한국도시설계학회지 Vol.15 No.2
국제적으로 낙후지역의 개선 및 재생전략에 대한 관심이 높아지고 있다. 브라질은 파벨라라고 불리는 슬럼의 문제가 심각하여 이의 개선을 위한 다양한 시도와 관련 경험들이 축적되어 왔다. 본 연구는 브라질의 파벨라 개선사업에서 각 참여주체들의 역할에 대한 분석을 통해 한국의 상황에 적용가능한 시사점의 도출을 목적으로 한다. 이를 위해 최근의 평화화를 통한 개선사업이 진행된 리우데자네이루의 산타마르타 파벨라를 중심으로, 기존문헌 분석, 현지답사 및 지역전문가 인터뷰를 실시하였다. 사례분석을 통하여, 정부의 선도적 조치를 통한 치안문제의 해결은 인프라 및 유틸리티 개선, 관광, 공공예술 등의 분야에서 국제기관과 민간의 협력을 이끌어내었고, 정부는 유연한 조직을 통해 민관파트너쉽을 원활히 하였으며, 이 과정에서 NGO는 모니터링과 주민 조직의 역할을 하였음을 알 수 있었다. 이는 한국의 낙후주거 개선에 있어서, 지역문제에 대한 구조적 분석을 통한 단계적 문제해결, 정부 조직 간의 협력 및 조직의 유연성 확보, 기업의 사회적 역할에 대한 전략적 접근, 사후관리 방안 마련 등의 시사점을 제공한다. Strategies for upgrading and refurbishing slums have gained substantial interest internationally. Due to persistent problems in slums, or favelas, Brazil has conducted various experiments and accumulated substantial knowledge to address these concerns. To draw implications applicable to Korea’s urban context, this study analyzes the roles taken by various sectors and their coordination in the upgrading of Brazil’s favelas. Focusing on the Santa Marta favela among the recent pacified models, literature review, site survey, and interviews with local experts have been conducted. In this case, the government, through preemptive action, resolved violence issues and promoted the participation of international organizations and private sectors in the provision of infrastructure and utilities, tourist programs, and public art. Flexible government entities facilitated public-private partnerships, while NGOs implemented monitoring and organized residents to keep projects on track. This study offers several implications, which include phased problem-solving through structural analysis of regional problems, increased cooperation and flexibility among and within government entities, strategic approaches to private sectors’ social roles, and appropriate follow-up management of slums.
Probit 분석을 이용한 ??유도탄 신뢰도 분석 및 활용방안
홍석진,정상훈,Hong, SeokJin,Jung, SangHoon 한국품질경영학회 2016 품질경영학회지 Vol.44 No.3
Purpose: The purpose of this study was to propose useful suggestions by analyzing reliability of guided missile using field data in Military industry. Methods: The collected data from Defense industry company and the military were analyzed using probit analysis which is non-linear model because field data contain binary variable. Results: The results of this study are as follows; It was found that the effect of time was significant. It takes about 12.4 years when 10st percentile of guided missiles are not working and it takes about 18.6 years when 50st percentile of guided missiles are not working. It was found that period between 10years to 15years comes less than reliability 0.0. Conclusion: Periodical check needs to extend from 4 year to 10 year partially. Early LOT need to check per 4 year and follow-up LOT extend the period of check to 10 year by reflecting the result of reliability.
정호진(Hojin Jung),정상훈(Sanghoon Jung),최세범(Seibum Choi) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11
AWD system means it delivers drive force to all wheels so that it can help vehicle escape low mu surface or climb hill more conveniently. With the growing concern for vehicle safety issues, application of AWD is not only focusing on vehicle performance but also vehicle safety. To design AWD vehicle control logic, AWD system modeling which has similar simulations results of real AWD vehicle is crucial. This paper describe how to model transfer case which is a mechanical device to transfer some portion of torque of main drive shaft to sub drive shaft. Especially, wet clutch type model which can control the amount of torque distribution by allowing clutch slipping is introduced. To verify the feasibility of transfer case model, Carsim/Simulink based AWD system simulation results of vehicle which is based on RWD will be presented.