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이용우 ( Lee¸ Yongwoo ),이연실 ( Lee¸ Yonsil ),이준엽 ( Lee¸ Joonyup ) 한국자치행정학회 2021 한국자치행정학보 Vol.35 No.3
위기는 누구에게나 당면할 수 있는 문제이며, 사회가 급변하는 과정에서 나타나는 사회구조적인 요인은 가족기능을 약화시켜 가정의 위기를 경험하게 한다. 이에 본 연구는 위기가정들이 경험하는 구체적인 삶의 변화와 적응과정에 대해 살펴보고 성공적 재기에 관한 함의를 도출하고자 한다. 본 연구의 목적은 위기가정 재기지원 과정에 직접 참여한 위기가구들의 경험을 질적연구 방법 중 하나인 사례연구를 통해 분석하는 것이다. 이를 위해 8명의 연구 참여자에 대해 심층인터뷰를 실시하여 자료를 수집하였으며, 수집한 자료들은 사례 내 분석과 사례 간 분석을 실시하였다. 이를 통해 나타난 참여 경험의 주요한 주제들은 위기과정 경험과 재기과정 경험을 중심으로 각각 4개의 주제가 도출되었다. 위기과정 경험에서 도출된 주제는 자포자기, 쫓기는 삶, 백지상태, 벼랑 끝 절벽의 4가지이며, 그들이 재기과정에서 경험한 주제는 심리적 안정감, 계획과 목표가 생김, 무지개, 절벽에서 들판으로의 4가지 주제가 도출되었다. 본 연구는 질적 사례연구로서 위기가정이 실제로 위기를 경험했던 내용과 재기과정에서의 구체적 경험에 대한 실체적 이해를 제공하였다는데 그 의의가 있다. 이러한 분석결과를 바탕으로 위기 가정들의 적응과정 및 삶의 어려움을 지원하기 위한 사회복지의 실천적·제도적 방안을 모색하였다. Crisis is a problem that anyone can face. Social structural factors appearing in the process of rapid social change weaken family functions and cause family crises. Therefore, this study examines the specific life changes and adaptation processes among crisis families and attempts to derive implications for successful recovery. The purpose of this study is to analyze the experiences of crisis families who directly participated in the crisis family recovery support process through a qualitative case study. Data were collected by conducting in-depth interviews with eight research participants. The collected data were analyzed to explore differences within and between cases. As a result, four themes were derived based on the experience of the crisis and recovery process: desperation, life being chased, a blank slate, and the cliff edge. was derived. Four sub-themes were also emerged: a sense of psychological stability, having new plans and goals, rainbow, and from cliff to field. As a qualitative case study, this study contrubutes to better and substantive understanding of what crisis families actually experienced and the specific experiences in the recovery process. This study provides practical and institutional ways that support the adaptation process and life difficulties of crisis families.
레이돔 표면에 금속 나노코팅을 적용한 적외선 저피탐 성능특성 연구
이용우,장인중,남주영,배형모,조형희,Lee, Yongwoo,Chang, Injoong,Nam, Juyeong,Bae, Hyung Mo,Cho, Hyung Hee 한국군사과학기술학회 2022 한국군사과학기술학회지 Vol.25 No.3
Infrared stealth technology used in aircraft is applied to reduce the infrared signal by controlling surface temperature and emissivity using internal heat sink, low emissivity material or metamaterial. However, there is one part of the aircraft where the use of this technology is limited, and that is the radome. Especially, radome should have transmittance for the specific radio frequency, therefore, common stealth technology such as emissivity control surfaces cannot be applied to radome surface. In this study, we developed metal nano-coating for infrared stealth which is applicable to radome surface. We designed slot-type pattern for frequency selective transmission in X-band, and also controlled thickness of metal nano-coating for long wavelength infrared emissivity control. As a result, our infrared stealth surface for radome has 93.2 % transmittance in X-band and various infrared emissivities from 0.17 to 0.57 according to nano-coatings thickness. Also, we analyzed infrared signature of radome through numerical simulation, and finally reduced contrast radiant intensity by 97.57 % compared to polyurethane surface.
삼차원 가상현실 운동 프로그램이 노인의 시공간적 보행변수에 미치는 효과
이용우 ( Yongwoo Lee ) 대한물리의학회 2016 대한물리의학회지 Vol.11 No.1
PURPOSE: This study was conducted to investigate the effect of the virtual reality training (VRT) using 3- dimensional video gaming technology on spatiotemporal gait parameters in older adults. METHODS: The study participants were divided into two groups: the VRT group and the control group. Those in the VRT group were enrolled in a VRT, which was conducted for 60 min per day, two times a week, during the 6-week research. The Wii-Fit balance board game was used for the VRT intervention. The VRT consisted of 6 different types of games, namely, jogging, swordplay, ski jump, hula hoop, tennis, and step dance. A 3-dimensional TV was used for 3-dimensional display. Participants in both the groups received 3 sessions of fall prevention education, at the first, third, and fifth weeks. Their gait parameters were measured by using OptoGait. RESULTS: After 6 weeks of the VRT, the spatial gait parameters of the participants, that is stride length and step length, were significantly improved compared with those of the control group participants (p<0.05). The temporal gait parameters, such as velocity, cadence, stride time, and step time, also showed improvement after the completion of the VRT training (p<0.05). Both the temporal and spatial gait parameters of the VRT group participants showed improvement after 6 weeks of the program compared with those of the control group participants (p<0.05). CONCLUSION: The VRT using 3-dimensional video gaming technology might be beneficial for improving gait parameters to prevent falls among older adults.
이용우(Yongwoo Lee) 한국지역사회복지학회 2018 한국지역사회복지학 Vol.0 No.66
본 연구는 동방사회복지회의 해피맘(HAPPY MOM) 사업에 대한 네트워크 분석을 시도함으로써 양육미혼모의 경제적 자립과 관련된 복합적 욕구를 효과적으로 충족시킬 수 있는 미혼모 자립지원 네트워크의 구축방안을 모색해 보고자 하였다. 이를 위해 해피맘 사업에 참여한 총 17개 기관을 대상으로 네트워크 내 조직 간의 다자간 상호작용에 초점을 맞춘 전체 네트워크(whole network) 분석을 시도하였다. 분석결과에 의하면, 해피맘 사업은 내용적 측면에서는 정보교환과 기관간협의를 중심으로 이루어지고 있었으며 구조적으로는 소수의 핵심기관을 중심으로 네트워크가 운영되고 있는 것으로 분석되었다. 마지막으로 이러한 연구결과에 기반하여, 양육미혼모 자립지원사업의 네트워크 구축을 위한 실천적·정책적 함의를 제공하였다. This study aimed to analyze the service network of the Happy Mom and thus present effective suggestions for the establishment of a network that would assist child-rearing unwed mothers’ self-sufficiency. With the utilization of the whole network analysis, the study analyzed the contents and structures of the network of the Happy Mom where 17 institutions participated. The results of the study indicated that the network of the Happy Mom was operated 1) mainly through information exchange and inter-institutions consultation and 2) by a couple of herb institutions that were highest-ranked in the all types of centrality. Finally, the study concluded with policy and practical implications for promoting child-rearing unwed mothers’ self-sufficiency and integration into the society.
ANALYSIS OF THE SINGULAR STRESS AT 3-D WEDGES VIA TWO-STATE M-INTEGRAL
Yongwoo Lee(이용우),Seyoung Im(임세영) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.3
Singular stress fields around three-dimensional wedges are examined, and the near-tip intensity is calculated via the two-state M-integral with the aid of the domain integral representation. A numerical example demonstrates the effectiveness and accuracy of the present scheme for computing the stress intensities of singular stresses near the generic three-dimensional wedges.
이용우(Yongwoo Lee),이규방(Gyubang Lee),김상운(Sangun Kim),강종갑(Jonggap Kang),마상진(Sangjin Ma),강병도(Byungdo Kang),장형성(hyungsung Jang),하성용(Sungyong Ha) 한국자동차공학회 2018 한국자동차공학회 부문종합 학술대회 Vol.2018 No.6
In the rapidly aging society, wheelchair users are continually increasing. For public welfare for the disabled, the public transportation service systems should be improved. In order to improve the mobility of the disabled, it has been required to develop a special model of the express buses. For a development of express bus for wheelchair users, it has to be developed with the specially designed entrance and lift systems. This study has been conducted to the design of a wheelchair lift system for express buses and evaluated structural integrity using finite element model. For the analytical evaluation, the strength analysis for standard load and endurance load were performed using FMVSS Part 571.403. In case of standard load, the maximum stress of the lift system was 29.5% of the yield stress, and it was evaluated that the lift system ensures against the guarantee load. It is expected that the result of this study will be utilized in the related welfare industry.