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시공단계 구조해석을 통한 적층형 모듈러주택의 시공조건 검토
조민주,김종성,유성용,최기봉 한국구조물진단유지관리공학회 2015 한국구조물진단유지관리공학회 논문집 Vol.19 No.2
At present, the actual condition is that Korean modular structures are limited to a low rise detached house and military barracks. And there is no standardized structural design method of stacked modular structure. Accordingly, in general, they don't review impact force in the stage of stacking and installing a module, the effect which wind load has on a structure in the stage of lifting, and inertial force occurring in the stage of lifting or transporting a module in the process of constructing a structure. Therefore, this study investigated the construction method of modular system to be studied in stages, and decided on the position to which load was applied and boundary condition in structural analysis at each construction stage. Besides, inertial force according to each speed was calculated in the lifting and wheeled transport of module. And we calculated impact load according to lifting speed in module stacking and installation work and wind load due to instantaneous wind speed in the installation work by lifting. On the basis of the suggested method, in the modular system to be studied, it carried out review of structure by changing determining conditions of load being applied by construction stage, such as in the stage of lifting, in the stage of transport, and in the stage of installation, and drew construction conditions securing stability structurally. 현재 국내 모듈러 구조물은 저층의 단독주택 및 군 병영생활관에 한정되어 있는 실정이며, 적층식 모듈러 구조물에 대한 표준화된 구조설계 방법이 없으므로 구조물의 시공과정에서 모듈의 양중이나 운송 시 발생되는 관성력, 양중 시 구조물에 대한 풍하중의 영향, 모듈의적층 설치 시 충격력 등에 대한 검토가 일반적으로 이루어지고 있지 않다. 따라서 본 연구에서는 대상 모듈러 시스템에 대한 단계별 시공방법을 살펴보고, 각 시공단계에 대한 구조해석 시 경계조건 및 하중 작용위치를 결정하였다. 또한 모듈의 양중 및 차량운반 시 각각의 속도에 따른 관성력을 산정하였으며 모듈의 적층설치 작업 시 양중속도에 따른충격하중과 양중에 의한 설치작업 시 순간풍속에 의한 풍하중을 산정하였다. 제안된 방법을 토대로 대상 모듈러 시스템에서 양중 시와 운송시, 설치 시 등 시공단계별 하중크기 결정조건을 변화시켜 구조검토를 수행하였으며 구조적으로 안전성이 확보되는 시공조건을 도출하였다.
12주간 보이타 복합운동이 학령기 전 미숙아의 운동발달에 미치는 영향
조민주,정주하,박정준,양점홍 대한운동학회 2015 아시아 운동학 학술지 Vol.17 No.3
[PURPOSE] The purpose of this study was to investigate the effects of Vojta combined exercise program on improvements in motor development, physical activity, and trunk muscle activity in premature children who were born without neurologic abnormality, but have delayed motor development. [METHODS] Three children aged between 59 and 79 months participated in this study. They were born prematurely without neurological abnormality, but currently have delayed motor development. Vojta combined exercise program consisted of Vojta exercise and aerobic exercise by using a video game. All participants performed exercise 50 min/day, 3 days/week at 11-13 RPE intensity for 12 weeks. Test of gross motor development(TGMD) and physical activity volume was measured by pedometer. Trunk muscle activity was measured by surface electromyogram (sEMG) at median frequency. [RESULTS] After 12 weeks of Vojta combined exercise, all subjects increased gross motor skills. Physical activities were also increased in all subjects. There were no overall increases in trunk muscle activities, but differences between right and left were decreased. [CONCLUSIONS] These results indicate that Vojta combined exercise is an effective treatment for premature children born without neurologic abnormality, but with delayed motor development. It seems that Vojta combined exercise may be applied to other children with delayed motor development.
김정은 시대의 미래과학도시 건설과 시각적 재현: 인상주의 도시풍경화의 유행
조민주 서울대학교 아시아연구소 2023 아시아리뷰 Vol.13 No.1
The plan for North Korea’s urban planning during the Kim Jong-un time is very future oriented and is closely related to the emergencies of the new taste of cityscape paining of this period. With the launch the Unha-3 rocket that was equipped with the Kwangmyong-3 satellite, the development of science and preparation for the space age became an important driving force in North Korean society. This political ideology of science was reflected in the city planning and urban culture of Pyongyang, the Galaxy Street commemorating the launch of the Unha-3 (2013), Satellite Street (2014), Future Scientists Street (2015) as well as skyscrapers such as the 53-story Eunha Residency were built one after another. The changed urban landscape appeared in various genres of painting, from propaganda painting to oil painting and Joseonhwa painting. In landscape painting depicting the changed cityscape of Pyongyang, the night view of Pyongyang’s new town, colored with artificial lighting in various colors, has become an important subject matter. In particular, Kim Jong-un ordered a policy to splendidly plan the night view of the city by establishing a new ‘Intuitive Lighting Decoration Guidance Bureau’ and creating a ‘Seonkyong Lighting Decoration Research Institute’ under the ‘Guidance Bureau’. This became an important driving force for the production of Impressionist landscape paintings that use ‘light’ and ‘color’ as important pictorial methods, which eventually diversified from the existing realism painting style. The interpretation of ‘artificial lighting’ seen in the Park Kwang-il’s oil painting ‘Future Scientists Street’ produced in 2018 goes beyond showing the newly emerged urban landscape, and actively reflects the artist’s imagination and expectation for the city’s night landscape. While implying each artist’s perspective and artistic taste in the early days of the Kim Jongun regime, the changed urban landscape and citizens’ sentiments were actively reflected on many landscape paintings in the impressionist style.
조민주,이창민 한양대학교(ERICA캠퍼스) 일본학국제비교연구소 2023 비교일본학 Vol.59 No.-
The improvement in Japan's labor productivity has encountered a stagnation since the mid–1990s. A contributing factor to this phenomenon lies in the pattern of labor mobility across industries. Labor productivity growth can be deconstructed into two main components: the “within” component, representing the enhancement of productivity within individual industries, and the “structural change” component, indicating the impact of labor shifting to other industries with varying levels of productivity. Our analysis reveals that the latter has exerted a diminishing influence, and the overall impact of both components is gradually waning. Notably, there is a discernible flow of labor from the manufacturing industry, characterized by relatively higher productivity, towards the service industry, where productivity tends to be lower. Within the service industry itself, the labor trend leans towards low–productivity and low–wage sectors, such as medical, healthcare, welfare, scientific research, professional, and technical services. It can be posited that this trend of labor migration towards sectors with lower levels of labor productivity serves as a hindrance to the overall increase in labor productivity.