소형펀치 크리프 시험을 이용한 9Cr강의 크리프 상수 평가

윤기봉,박태규,심상훈,정일석,Yun, Gi-Bong,Park, Tae-Gyu,Sim, Sang-Hun,Jeong, Il-Seok 대한기계학회 2001 大韓機械學會論文集A Vol.25 No.9

Recently small punch creep testing (or miniature disc bend creep test) has received much attention through European collaborative research projects. This method was considered as a substitute for the conventional creep rupture testing by which the residual creep life is measured from the specimen taken out from serviced components of high temperature plants. It would be beneficial if the material creep properties such as power law creep constants as well as the creep rupture life can be measured from the small punch creep test. In this paper a method of assessing creep constants from the small punch creep testing is proposed. Finite element analyses were performed to investigate evolution of stress and strain rate at the weakest locations of the small punch creep specimen. Elastic-plastic-secondary creep analyses were carried out. The estimation equations for creep constants by the small punch creep testing are proposed based on the finite analysis results. Small punch creep tests were also performed with 9Cr steel and the accuracy of the proposed equation was verified by the experimental results.

재료의 소성 거동을 고려한 용접 계면균열의 Ct 매개변수

윤기봉,이진상,Yun, Gi-Bong,Lee, Jin-Sang 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.3

In this study, behavior of $C_t$ which is a well-known fracture parameter characterizing creep crack growth rate, is investigated for weld interface cracks. Finite element analyses were per formed for a C(T) specimen under constant loading condition for elastic-plastic-creeping materials. In modeling C(T) geometry, an interface was employed along the crack plane which simulated the interface between weld and base metals. The $C_t$ versus time relations were obtained under various creep constant combinations and plastic constant combinations for weld and base metals, respectively. A unified $C_t$ versus time curve is obtained by normalizing $C_t$ with $C^*$ and t with $t_T$ for all the cases of material constant variations.

부·자녀 및 모·자녀 의사소통과 친구관계의 질이 중·고등학생의 행복감에 미치는 영향

윤기봉(Kibong Yun),도현심(Hyun-Sim Doh) 한국아동학회 2017 아동학회지 Vol.38 No.2

Objective: The purpose of the study was to examine the direct effects of parent-adolescent communication and its indirect effects through adolescent friendship quality on happiness among both middle and high school students. Methods: Participants in this study were 1,126 adolescents (667 middle school students and 459 high school students) in Seoul and Gyoung-gi Do. Data were collected through self-report questionnaires for adolescents, which included measures of parent-adolescent communication, friendship quality and happiness. Data were analyzed by t -tests, correlations, and SEM using SPSS 22.0 and Mplus 6.0. Results: For middle school students, father-adolescent communication had direct and indirect effects on happiness. However, mother-adolescent communication did not directly or indirectly affect adolescent happiness. Specifically, only father-adolescent communication had an significant indirect effect through friendship quality on adolescent happiness. For high school students, father-adolescent communication had direct effects on happiness, while mother-adolescent communication had significant indirect effects on adolescent happiness via friendship quality. Conclusion: This study underscores the importance of parent-adolescent communication and friendship quality in predicting adolescent happiness with differences in direct and indirect paths between middle and high school students. These findings emphasize the role of parent-adolescent communication and friendship quality in developing programs to improve the happiness of adolescents.

유아기 자녀를 둔 부부의 양육효능감, 양육스트레스 및 결혼만족도 간 관계: 자기효과와 상대방효과 및 조절효과

윤기봉(Kibong Yun),김소영(Soyoung Kim) 가정과삶의질학회 2020 가정과삶의질연구 Vol.38 No.1

부모-자녀 간 의사소통이 청소년의 행복감에 미치는 영향

윤기봉(Kibong Yun),김민주(Minjoo Kim),이운경(Woon Kyung Lee) 이화여자대학교 이화사회과학원 2018 사회과학연구논총 Vol.34 No.1

본 연구에서는 부모-자녀 간 의사소통이 청소년의 행복감에 미치는 영향과 더불어, 이들 간의 관계에서 온라인 친구관계의 질이 중재적 역할을 하는지 살펴보고자 하였다. 이를 위해 서울 및 경기 지역에 위치한 중학교와 고등학교에 재학 중인 총 170명(남: 101명, 여: 69명)의 남녀 청소년을 대상으로 자기보고식 질문지를 이용하여 자료를 수집하였다. 수집된 자료는 SPSS/PC 22.0을 사용하여 편상관분석과 위계적 회귀분석을 실시하였다. 분석 결과, 부모-자녀 간 의사소통 및 온라인 친구관계의 질이 높을수록 청소년의 행복감이 높은 것으로 나타났다. 또한 부모-자녀 간 의사소통과 청소년의 행복감 간의 관계에서 온라인 친구관계의 질의 중재효과가 통계적으로 유의미한 것으로 나타나, 청소년의 행복감에 대한 부모-자녀 간 의사소통의 부정적 영향에서 온라인 친구관계의 질이 보호요인으로 작용함을 확인하였다. 본 연구결과는 온라인 친구가 청소년의 행복감에 유의미한 영향을 미칠 수 있으며, 낮은 부모-자녀 간 의사소통의 부정적 영향을 온라인 친구관계의 질이 완화하는 보호효과가 있음을 나타내어, 청소년에게 있어 온라인 친구의 의미를 지속적으로 탐색할 필요성을 제시한다. Both parent-adolescent relations and peer relations are two important elements known to have close associations with adolescent happiness. This study focused on parent-adolescent communication as an important facet of parent-adolescent relations, with a specific focus on the online friendship quality, which has been insufficiently investigated in spite of its increasing importance, to investigate their roles in adolescent happiness. A total of 170 adolescents(boys: 101, girls: 69) who had close online friendships were examined, and the data were analyzed through partial correlation and hierarchical regression analysis. Adolescent happiness had significant relations with parent-adolescent communication and online friendship quality, and online friendship quality played a moderating role in the relationship between parent-adolescent communication and adolescent happiness. In spite of a few limitations, this study showed significant roles of online friendship quality, especially in the presence of low parent-child communication, suggesting the need for prospective studies that further examine the in-depth meaning of having close online friendships.

시각장애인의 재난대응 욕구와 스트레스 및 불안 간의 관계

윤기봉(Kibong Yun),오윤진(Yunjin Oh),오충원(Chungweon Oh) 한국장애인재활협회 2021 재활복지 Vol.25 No.3

본 연구는 재난약자로서 시각장애인의 재난과 관련한 정신건강에 관심이 필요하다는 인식 하에, 재난대응욕구와 스트레스 및 불안 간 관계를 살펴보고 어떠한 재난대응 욕구가 충족이 되면 시각장애인의 재난상황에 대한 스트레스와 불안이 감소될 수 있는지 파악하고자 하였다. 본 연구는 2020년 5월 ~ 6월까지 서울의 시각장애인복지관 5곳의 모집문건을 통해 참여의사를 밝히고 서면동의를 한 시각장애인 203명을 대상으로 하였으며, 결과 분석을 위해 상관분석과 회귀분석을 실시하였다. 그 결과, 재난대응 욕구들은 시각장애인의 스트레스와 부적상관이 나타났으며, 재난대응 욕구 중 의사소통욕구만이 스트레스에 영향을 미쳐 의사소통 욕구가 이미 충분히 충족되어 있으면 시각장애인의 스트레스가 감소되는 것으로 나타났다. 또한 재난대응 욕구들은 시각장애인의 불안과도 부적상관이 나타났으며, 재난대응 욕구 중 이동 욕구만 불안에 영향을 미쳐, 이동 욕구가 이미 충분히 충족되었다면 시각장애인의 불안은 감소되는 것으로 나타났다. 본 연구결과에 따라 시각장애인의 정신건강을 고려한 재난대비 훈련 프로그램 및 매뉴얼 마련의 필요성과 정책적 접근이 마련되어야 함을 논의하였다. Under the recognition that the visually impaired as a disaster vulnerable person needs attention to mental health related to disaster, the purpose of this study was to examine the relationship between the special need for disaster response and stress/anxiety. The purpose of this study was to determine whether the stress and anxiety of the visually impaired in a disaster situation could be lowered when certain disaster response special needs are satisfied. This study targeted 203 blind people from May to June 2020. Research subjects who wished to participate in the study expressed their intention to participate through the recruitment documents of five blind welfare centers and gave written consent before participating in the study. The results are as follows. First, among the special needs for disaster response, only the communication need affects stress. When communication needs are already sufficiently satisfied, the stress of the visually impaired is lowered. Second, special needs for disaster response were negatively correlated with the anxiety of the visually impaired. Among the special needs for disaster response, only the move need affects anxiety, so if the move need is already sufficiently satisfied, the anxiety of the visually impaired is reduced. According to the results of this study, it was discussed the necessity of preparing a disaster preparedness training program and manual considering the mental health of the visually impaired and that a policy approach should be prepared.

어머니의 끈기가 청소년의 끈기에 미치는 영향: 부모 자녀 간 대화시간을 통한 양육태도의 조절된 매개효과

윤기봉(Kibong Yun) 가정과삶의질학회 2020 가정과삶의질연구 Vol.38 No.2

시각장애인의 주관적 건강상태가 생활만족도에 미치는 영향 : 재난적 스트레스와 재난적 우울감의 매개효과

윤기봉(Yun, Kibong),오윤진(Oh, Yunjin),오충원(Oh, Chungweon) 한국시각장애교육재활학회 2021 시각장애연구 Vol.37 No.3

연구목적: 본 연구는 시각장애인의 주관적 건강수준이 생활만족도에 미치는 직접적 영향력과 함께 재난적 스트레스와 재난적 우울감을 매개로 하여 미치는 간접적 영향력을 살펴보는 것을 목적으로 하였다. 연구방법: 본 연구는 시각장애인 263명(남자 154명, 여자 109명)을 대상으로 하였으며, 2021년 6월에 서울 및 경기도 지역의 활동지원서비스를 제공하는 복지관 및 활동지원서비스 수행기관을 통해 모집되었다. 연구결과: 첫째, 시각장애인의 주관적 건강상태는 생활만족도에 영향을 미치는 것으로 나타나, 시각장애인이 본인의 건강이 좋다고 인식할수록 생활에 대한 만족도는 높았다. 둘째, 시각장애인의 주관적 건강상태와 생활만족도 간 관계에서 재난적 스트레스와 재난적 우울감은 각각 매개역할을 하는 것으로 나타나, 시각장애인이 건강하다고 인식할수록 재난적 스트레스와 재난적 우울감이 낮아서 생활만족도가 높았다. 결론: 본 연구는 시각장애인의 생활 만족을 높이는데 신체적 건강과 정신적 건강이 모두 중요하다는 사실 뿐만 아니라, 그 구조적 관계를 밝힘으로서 시각장애인의 삶의 질을 높일 수 있는 방향을 제시하였다는 의의를 갖는다. Purpose: The purpose of this study was to examine the direct influence of the subjective health level of the visually impaired on life satisfaction and the indirect influence of stress and depression about disaster as a mediating role. Method: This study was conducted with 263 blind people (154 males, 109 females), who were recruited in June 2021 through welfare centers in the Seoul and Gyeonggi-do area. Results: First, the subjective health status of the visually impaired had an effect on life satisfaction. Second, in the relationship between the subjective health status and life satisfaction of the visually impaired, stress about disaster and depression about disaster each play a mediating role. Conclusion: This study has the significance of presenting both physical and mental health as a mechanism to improve the quality of life of the visually impaired.

걸음마기 영아의 기질적 특성에 관한 어머니의 신념과 반응

윤기봉(Ki Bong Yun),박성연(Seong Yeon Park) 한국아동학회 2013 아동학회지 Vol.34 No.1

The purpose of this study was to explore Korean mothers` beliefs regarding their toddlers` temperament including what they believe constitutes desirable and undesirable behavior and their resulting reactions. Data were collected int the process of interviewing 50 Korean mothers of toddlers (whose average age was 34.1 Months and of which 54% were boys). Results revealed that mothers considered ``High-Sociality`` ``Positive Affect`` and ``High-Effortful Control`` as desirable temperaments whereas ``Negative Affect`` ``Under-Effortful Control`` and ``Low Sociality`` were considered to be undesirable temperaments for toddlers. Mothers cited the importance of child ``Sociality`` and ``Development`` ``Easiness of Parenting`` and ``Child Happiness`` as the reasons for their beliefs. While they considered ``Negative Affect`` ``Under-Effortful Control`` and ``Low Sociality`` to be undesirable temperaments citing ``Sociality`` ``Difficulty of Parenting`` ``Development`` and ``Child Safety`` as the reasons. Finally mothers were more likely to give verbal encouragement or physical encouragement such as hugging in responding to desirable behavior on the part of their child whereas they were more likely to give firm inhibition reasoning or inconsistent reaction to their child`s undesirable behavior. Many of the mothers` beliefs varied depending on the child`s gender. Results were discussed in relation to cultural perspectives.

시각장애인의 재난인식 및 재난대응 욕구에 대한 연구

윤기봉(Yun, Kibong),오윤진(Oh, Yunjin),오충원(Oh, Chungweon) 한국시각장애교육재활학회 2020 시각장애연구 Vol.36 No.4

연구 목적: 본 연구에서는 국내 시각장애인의 재난에 대한 인식과 재난 상황에서의 대응에 대한 욕구에 대해 살펴보는 것을 목적으로 하였다. 연구 방법: 본 연구는 시각장애인 203명을 대상으로 하였다. 연구에 참여하고자 하는 연구대상자가 2020년 5월~6월까지 서울지역 5개의 시각장애인복지관의 모집문건을 통해 참여의사를 밝히고 서면동의를 한 후에 연구에 참여하였다. 연구 결과: 시각장애인이 가장 심각하게 인식하는 재난유형은 감염병이었고 그 다음은 지진, 화재, 태풍 순으로 나타났다. 시각장애인의 재난대응 욕구들 중에서 충족되고 있는 욕구는 자립성유지 욕구, 의사소통 욕구, 의료적돌봄 욕구, 이동욕구 순이었으며, 슈퍼비전 욕구가 가장 낮게 나타났다. 결론: 본 연구는 시각장애인의 재난에 대한 인식과 더불어 재난대응에 대한 이해를 높여 재난약자로서의 시각장애인을 대상으로 한 재난관리정책의 방향을 제시하는 기초자료가 되었다는 의의를 갖는다. Purpose: The purpose of this study was to examine the perceptions of disasters and their desire to respond to disaster situations of the visually impaired in Korea. Method: This study targeted 203 blind people from May to June 2020. Research subjects who wished to participate in the study expressed their intention to participate through the recruitment documents of five blind welfare centers and gave written consent before participating in the study. Results: The type of disaster that the visually impaired perceived most seriously was infectious disease, followed by earthquake, fire, and typhoon. Among the needs for disaster response of the visually impaired, the need to be satisfied was the need to maintain independence, followed by the need for communication, the need for medical care, and the need for mobility, and the need for supervision was the lowest. Conclusion: This study is meaningful in that it has become a basic data suggesting the direction of disaster management policies for the blind as the disaster vulnerable by enhancing the awareness of disasters and their understanding of disaster response.