콘크리트 슬래브와 보조기층 사이의 마찰특성 조사

임진선(Lim Jin Sun),박문길(Park Moon Gil),남영국(Nam Young Kug),정진훈(Jeong Jin Hoon) 대한토목학회 2009 대한토목학회논문집 D Vol.29 No.6D

본 연구에서는 슬래브와 보조기층 간의 마찰 특성을 조사하기 위하여 국내 콘크리트 포장에 주로 사용되는 린 콘크리트, 쇄석, 아스팔트 보조기층에 대하여 마찰력 실험을 실시하였다. 이 외에도 분리막 사용 여부와 보조기층의 습윤 상태를 실험 변수로 사용하였다. 슬래브에 40㎜/hour의 속도로 수평하중을 가한 1차 하중 재하 시와 안정화 상태(2차 및 3차) 및 습윤 상태(4차)에서의 슬래브의 수평변위와 마찰계수를 측정하였다. 1차 하중재하 시 린 콘크리트, 아스팔트, 쇄석, 그리고 분리막을 사용한 보조기층 순으로 최대 마찰계수가 컸으며, 안정화 상태에서는 아스팔트, 쇄석, 린 콘크리트 그리고 분리막을 사용한 보조기층 순으로 크게 측정되었다. 분리막을 사용한 보조기층은 습윤 상태에 의한 영향이 거의 없었으나 분리막을 사용 하지 않은 쇄석 및 아스팔트 보조기층은 습윤 상태로 인하여 마찰계수가 감소하였다. 향후 슬래브의 두께와 아스팔트의 온도 민감성이 미치는 영향에 대한 추가 마찰력 실험이 수행될 것이다. 그리고, 실험 결과를 이용한 구조해석을 통하여 슬래브와 보조기층 간의 마찰특성이 콘크리트 포장의 거동 및 공용성에 미치는 영향을 조사할 계획이다. In this study, a series of push-off tests for lean concrete, aggregate, asphalt subbases mainly used in Korea were performed to investigate the friction characteristics between the slab and subbase layers. Use of separation membrane and wet condition of subbase were other parameters in the tests. Horizontal displacements of the slabs and friction coefficients were measured at 1st loading, stable condition (2nd and 3rd loadings), and wet condition (4th loading) by applying 40㎜/hour horizontal loadings. Larger maximum friction coefficients were measured in order of the lean concrete, asphalt, aggregate, and subbases using the separation membrane at lst loading, and in order of the asphalt, aggregate, lean concrete, and subbases using the separation membrane at stable and wet conditions. The friction coefficients of the aggregate and asphalt subbases which did not used the separation membrane decreased by the wet condition while the subbases using the separation membrane were not affected. Additional push-off tests for effects of slab thickness and temperature sensitivity of asphalt will be performed. And, effects of the friction characteristics between the slab and subbase layers on behavior and performance of concrete pavements will be investigated by structural analyses using the test results.

스포츠 참여자의 여가촉진, 레크리에이션 전문화와 생활만족간 의 관계분석

임진선(Jin Sun Lim),전태준(Tae Jun Chon),이건희(Gun Hee Lee) 한국여가레크리에이션학회 2015 한국여가레크리에이션학회지 Vol.39 No.2

The purpose of this study was to analyze the structural model among leisure facilitator, recreation specialization, and life satisfaction. Using the sampling method of convenience sampling, total of 350 questionnaire was distributed from June 20, 2014 to July 20, 2014. Among them, 19 insincere questionnaire were ruled out and 331 remaining were used to analyze. As a result, leisure facilitator had an effect on recreation specialization (β = .601), and recreation specialization shown significant effect on life satisfaction (β = .180). Also, leisure facilitator had significant relationship with life satisfaction as well (β = .332). The above results indicates that leisure facilitator and recreation specialization are critical factors to increase life satisfaction. Also, an strategic approach toward recreation specialization and more research regarding leisure facilitator are needed.

COVID-19시대 대학생들의 스트레스 대처방법과 여가제약협상의 관계

임진선(Lim, Jin Sun),최아론(Choi, A Ron) 한국응용과학기술학회 (구.한국유화학회) 2021 한국응용과학기술학회지 Vol.38 No.2

이 연구의 목적은 포스트 코로나 시대에 있는 대학생들의 스트레스 대처방법이 여가제약협상에 어떻게 영향을 미치는지를 살펴보는 것이다. 이 연구의 목적을 달성하기 위하여, 2021년 1월 25일부터 2월 19일까지 전북, 전남, 부산에 소재한 대학생을 대상으로 설문조사를 실시하여 총 247명의 자료를 분석에 사용하였다. 자료분석은 SPSS 21.0과 AMOS18.0 을 사용하여 기술통계, 확인적 요인분석, ANOVA와 위계적 회귀분석을 실시하였다. 그 결과 COVID-19 이전과 이후의 여가유형에 변화에 따라 여가제약협상에 차이가 나타났다. 대학생들의 스트레스 대처방법에 따라 여가제약협상에 대한 부분에 긍정적인 영향을 미치는 것으로 나타나 대처방안에 대한 세부적 접근에 대해 고민해야 할 것이다. 특히 스트레스 대처방법 중적극적인 스트레스 대처방법(문제중심 대처, 사회적지지추구)이 여가제약협상에 긍정적 영향을 미치고 있음을 확인 할 수 있었다. 따라서 COVID-19와 연계하여 스트레스 대처와 연계한 여가제약이나 여가만족등 다각도의 접근이 필요 할 것으로 판단된다. The purpose of this study is to examine how college students stress coping in the post-corona era affect leisure constraint negotiations. To achieve the purpose of this study, from January 25th to February 19th, 2021, 247 copies were used for this study, excluding 13 questionnaires from Jeonbuk, Jeonnam, and Busan. For data analysis, descriptive statistics, confirmatory factor analysis, ANOVA and hierarchical regression analysis were performed using SPSS 21.0 and AMOS 18.0. As a result, there was a difference in leisure constraint negotiations according to changes in the types of leisure before and after COVID-19. According to the stress coping method of college students, it appears that it has a positive effect on the part of leisure constraint negotiations, so it is necessary to consider a detailed approach to the coping plan. In particular, it was confirmed that the active stress coping method(Active problem solving, Social support seeking) had a positive effect on the leisure constraint negotiations. Therefore, future research will require efforts to verify their relationship with various approaches to leisure constraints, leisure constraints negotiations, and stress and stress response strategies with COVID-19.

제주올레길 도보관광 참여 대학생의 체험요인이 삶의 만족과 재방문의사에 미치는 영향

임진선 ( Lim Jin-sun ),박영식 ( Park Young-sik ) 한국관광산업학회 2020 Tourism Research Vol.45 No.4

이 연구의 목적은 제주올레길 도보관광 참여 대학생의 체험요인이 삶의 만족과 재방문의사에 어떤 영향을 미치는지 알아보는 것이다. 이를 위해 제주올레길에 방문한 대학생 250명을 대상으로 유목적 적표집 방법으로 설문을 배포하였고 불성실한 답변이나 제출되지 않은 설문지20부를 제외한 230부를 이 연구에 사용하였다. 성별, 동반자, 참여횟수를 묻는 인구통계학적 문항과 체험요인, 삶의 만족도와 재방문의사를 묻는 5점 리커트 척도 문항으로 구성하였고 대상자들을 분석하기 위하여 빈도분석, 요인분석, 신뢰도분석, 상관관계와 다중회귀분석을 사용하여 통계분석을 실시하였다. 그 결과 첫째, 제주올레길 도보관광 참여 대학생의 체험요인(일탈적, 심미적, 오락적, 교육적)이 삶의 만족에 긍정적 영향을 미쳤다. 둘째, 제주올레길 도보관광 참여 대학생의 체험요인(일탈적, 오락적, 심미적)이 재방문의도에 긍정적 영향을 미쳤다. 이는 도보관광 체험이 다양한 효과성을 볼 수 있는 활동이고, 도보와 관련된 활동이 지속적으로 늘어나는 이유도 이러한 삶의 만족과 재방문의 효과 때문인 것으로 판단된다. 본 연구는 다음과 같은 시사점을 가진다. 도보여행은 대학생들의 만족감을 높일 수 있으므로 환경정비와 안정성을 확보할 수 있는 지자체의 노력과 지역주민의 생활 만족과 여행자들의 여행 만족을 위해 자연경관 보존의 노력이 필요하다. 또한 재방문의도는 지역 경제 발전에 영향을 미치므로 다양한 콘텐츠를 발굴하도록 해야 하며 지역의 역사들을 잘 보존하여 여행과 접목시키는 작업을 계속적으로 구성할 필요가 있다. The purpose of this study is to find out how the experience factors of college students participating in the Jeju Olle Trail walking tour affect on life satisfaction and intention to revisit. Data was collected through surveys on 250 college students visiting Jeju Olle Trail using purposive sampling method. 230 surveys, excluding 20 surveys with insincere or no response, were used for the study. The survey consisted of demographic questionnaires, including gender, place of residence, partner, and number of participation, and Likert scale questionnaires, experience(4E), life satisfaction and intention to revisit. To analyze these subjects, they were statistically processed sing frequency analysis, factorial analysis, reliability analysis, correlation, and multiple regression analysis methods. The result showed that experience factors (esapist, esthetic, entertainment, educational) influenced life satisfaction and experience factors (esapist, esthetic, entertainment) influenced intention to revisit. This proves that walking tour experience is activity that would visualize diverse effects, and the reason activities relating with walking constantly increasing, is because of satisfaction of life and revisiting effect. The following research has the same implication. walking tour will increase University students' satisfactory, and efforts to preserve nature for traveler's trip satisfaction and local people's life satisfaction. Efforts from municipality to make sure environmental maintenance and safety is also required. Furthermore, revisiting intentions has effect on local economic growth, so consistant development of diverse contents to preserve local histories and relating it with traveling industries are essential.

편심 링테스트를 통한 3성분계 LMC의 구속 수축 거동에 대한 연구

임진선(Lim, Jin-Sun),민경환(Min, Kyung-Hwan) 한국콘크리트학회 2023 한국콘크리트학회 학술대회 논문집 Vol.35 No.2

중규모크기 유한요소법을 이용한 콘크리트의 압축강도에 대한 크기효과

임진선(Jin-Sun Lim),정영도(Young-Do Jeong),이성태(Seong-Tae Yi) 한국콘크리트학회 2018 콘크리트학회논문집 Vol.30 No.1

스포츠참여자에 있어 중요타자의 여가지지가 여가만족에 미치는 영향

임진선(Lim, Jin-Sun),전태준(Chon, Tae-Jun) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.5

The purpose of this study was to understand how leisure supports to the sports participations effects on the leisure satisfaction. In order to increase leisure participate efficiency, not only characteristic of participate activity treated importantly but also the support from the other. Since there are many studies studying the social support give positive effect on leisure satisfaction and quality of life, the study of the direct elements of leisure activity were needed. Therefore, the study was conducted with adults around Seoul and Gyeonggi Province, age over 19 and using a convenience sampling method. The study was divided into preliminary research and main research, 166 questionnaires were used in preliminary research and 349 questionnaires were used in main research. Reliability and validity test was done with factor analyzing method, confirmatory factor analysis, and validity analysis. Correlation analysis and regression analysis was done for cause and effect relationship among the factors. As a result, leisure supports from the sports participant’s significant others affect positively on leisure satisfaction. Especially, family support gave positive effects on social, physical, esthetical, educational satisfaction, and friend’s leisure support gave positive effects on psychological and educational satisfaction.

요트참여자들의 진지한 여가경험 과정분석과 그 의미 탐색

임진선(Lim Jin Sun) 한국여가레크리에이션학회 2018 한국여가레크리에이션학회지 Vol.42 No.1

The purpose of this research was to analyze the process of serious leisure experience among yacht sailing participants. The 10 participants were selected among those who participated in yacht sailing more than once per month. Grounded theory method was used to analyze the process of serious leisure of yacht sailing participants. First, yacht sailing is not a sports for a specific class. It is an activity that can be participated by anyone who knows about the methods or channels to participate in the activity. Second, positive change in life can be expected for those who participate seriously in yacht-sailing. Yacht sailing has many charms therefore, its participants perceive it to be a special leisure activity. Third, it is an activity which positively affects self-development because it provides opportunities for people to share various knowledge and information while seriously participating in the yacht-sailing activity.

노인의 여가태도가 건강증진행위와 삶의 질에 미치는 영향

임진선(Jin Sun Lim),최민호(Min Ho Choi) 한국여가레크리에이션학회 2015 한국여가레크리에이션학회지 Vol.39 No.4

The purpose of this study was to identify the effect of leisure attitude(LA) on health promotion lifestyle behaviors(HPLB), and quality of life(QoL) among elderly. Using the sampling method of convenience sampling, total of 250 questionnaire was distributed from September 1, 2015 to October 15, 2015. Among them, 30 insincere questionnaire were ruled out and 220 remaining were used to analyze. As a result, LA had an effect on HPLB, and LA shown significant effect on QoL. The above results indicates that LA is critical factors to increase HPLB and QoL. Also, an strategic approach toward LA and more research regarding leisure attitude are needed.

요트참여자의 여가촉진이 여가체험활동에 미치는 영향

임진선(Jin Sun Lim),조희태(Hee Tae Cho),강형길(Hyoung Kil Kang) 한국여가레크리에이션학회 2015 한국여가레크리에이션학회지 Vol.39 No.1

The purpose of this study was to examine the relationships between leisure facilitators and leisure experience realms. One hundred eighty questionnaires were used for data analyses. Results showed that intrapersonal facilitator had effects on entertainment, education, escapist, esthetic experience factors. Interpersonal facilitator influenced education and esthetic experience factors. Structural facilitator affected education and esthetic experience factors. Findings indicated that leisure facilitators played an important role in enhancing leisure experience realms, particularly for education and esthetic experience realms. Theoretical and practical implications were also provided in the discussion section.