• 한국공간구조학회논문집
• /
• 제21권4호
• /
• pp.81-89
• /
• 2021

Recently, interest in OSC(Off Site Construction) is increasing due to the trend of a decrease in skilled workers and an increase in labor costs. In this regard, PC(Precast Concrete) is being reviewed for apartments, the most common type of housing in Korea. As the biggest concern for PC apartment houses, civil complaints such as inter-floor noise and leakage were presented. In this study, the details of the joints were reviewed based on the past cases of PC apartments, and the details of the recently constructed or planned PC apartments were investigated. Through this, the leakage path in the past was analyzed through the existing research literature and data. And wall type RC and PC apartment joint leakage test was performed and we found the needs for a detail of waterproof steps, sealant. Also, joint details were investigated for a rahmen type apartment housing under construction. At last, A discussion was conducted on the direction for a detailed proposal of an improved joint in the future.

• 한국도서관정보학회지
• /
• 제49권1호
• /
• pp.23-46
• /
• 2018

이 연구는 성격유형별 맞춤형 도서 제공이 초등학생의 독서태도에 미치는 영향을 파악하고자 하는 것이 목적이다. 이를 위하여 경기도의 초등학교 4학년~6학년 226명의 학생들을 대상으로 학교행복감과 독서성향의 관계를 분석하였으며, 에니어그램 성격유형을 검사하고 성격유형에 맞는 맞춤형 도서를 제공하여 그 효과를 파악하였다. 연구의 주요 결과를 요약하면 다음과 같다. 첫째, 자신의 성격에 맞는 책을 처방해준다는 사실이 학생들의 호기심을 자극하여 독서에 대한 흥미를 불러일으킬 수 있었다. 둘째, 자신의 성격 유형과 비슷하게 나온 친구들의 책을 함께 바꿔 읽기도 하면서 다양한 책에 접하는 노출되는 기회가 제공될 수 있었다. 셋째, 자신과 다른 성격유형의 책들이 무엇이 있는지에 대한 관심이 생겼고 그 책들을 모두 읽고 싶다는 의지가 나타났다.

• 약학회지
• /
• 제53권4호
• /
• pp.206-216
• /
• 2009

3-Hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (Statins) are potent inhibitors of cholesterol biosynthesis. Cholesterol-lowering therapy using statins significantly reduces the risk of coronary heart disease. Various discovery of statins as bone anabolic agents has spurred a great deal of interest among both basic and clinical bone researchers. In-vitro and some animal studies suggest that statins increase the bone mass by enhancing bone morphogenetic protein-2 (BMP-2)-mediated osteoblast expression. Clinical and animal test results of statins focusing on the prevention and treatment of bone fractures was collected. Three independent literature searches were performed by using from January 1, 2002 to September 2008 for clinical and animal test results. Search term included statins, HMG-CoA reductase inhibitors, pleiotropic effects, fracture, osteoporosis and clinical and animal test. No consensus has been reached whether clinical use of statins has beneficial effects on bone health, partly due to lower statin concentrations because of first-pass metabolism by the liver. Experimental use of statins as stimulators of bone formation suggests that they may have widespread applicability in the field of orthopaedics. With their combined effects on osteoblasts and osteoclasts, statins have the potential to enhance resorption of synthetic materials and improve bone ingrowth. In conclusion, The use of statins in the prevention and treatment of bone fractures requires further study. But observational studies suggest that statins for decreasing bone fractures including osteoporosis have to be considered local direct administration like transdermal or subcutaneous type over oral adminstration.

• 한국안전학회지
• /
• 제11권1호
• /
• pp.53-59
• /
• 1996

To protect the damages or the disasters caused by overheating of industrial electric equipments or electric home appliances, a temperature sensitive thermal fuse is generally used in those equipments. Thermal fuses cutoff the current flow when the temperature of the electric equipments are abnormally overheated and over the certain temperature. Therefore thermal fuse is one of the most important elements in the sense of safety. Thermal fuses are classified into two types according to thermally sensitive materials, a low temperature melting alloy and an organic chemical compound. Domestic products of thermal fuses are now only with an organic chemical compound. Domestic products tested by using cutoff test and aging test etc. are satisfied UL specification. It's shown that the accuracy and the precision of the domestic products are as good as those of the overseas products obtained UL mark. However, some of domestic products show the reclosing problem which is mainly related the safety. This problem should be solved to make the reliable thermal fuses. In this paper, our Interest is to find out the causes of reclosing. In the comparison between thermally sensitive materials occurred reclosing and those occurred no reclosing, the test effects show that the characteristics of emitting heat and absorbing heat are different.

• 한국기계가공학회지
• /
• 제19권11호
• /
• pp.8-15
• /
• 2020

The government has announced its Hydrogen Economy Roadmap to strengthen global competitiveness on the hydrogen economy by focusing on hydrogen fuel cell electric vehicles and fuel cells. In this regard, the interest on the economics and safety of the infrastructure of hydrogen stations has also increased. In this study, a test bed similar to an actual hydrogen charging facility was built, and a prototype of a piston-type compressor was modeled. In this model, the piston was hydraulically compressed to progressively test leakage, leakage rate, and durability and to check for any malfunction. Moreover, the leakage rate, cylinder leak performance, and compressor operation durability were evaluated for safety; it was confirmed that there were no abnormalities. Nevertheless, an investigation of the long-term use and operating pressure of the compressor is necessary to verify the safety of developing a100-MPa domestic compressor in the future.

• 한국의류학회지
• /
• 제12권3호
• /
• pp.309-318
• /
• 1988

The purposes of this study were: 1) to develop specific AIO variables(clothing variables) based on clothing behavior studies, 2) to segment apparel market by clothing variables, 3) to discribe the profile of each segment with clothing variables, lifestyle variables and demographic variables, 4) to Suggest effective strategies on apparel market of women's clothing. The Likert Type clothing questionnaires measured 6 aspects of clothing (fashion, conformity-individuality, practicality, aesthetics, modesty and brand consciousness & status symbols) dealing with activities, interests and opinions. In addition, lifestyle variables were measured with general AIO statements. The questionnaires were administered to 563 young women (students, career women and homemakers) living in Seoul. The data were analysed by factor analysis, ctustering analysis, multiple discriminant analysis, one-way ANOVA ana Duncan's multiple range test. The results of the study were as follow: 1) 4 factors emerged from factor analysis of clothing variables. Factor 1: lower interest in modesty and higher interest in aesthics, Factor 2: brand consciousness and status symbols, Factor 3: conformity, Factor4 : fashion. 2) Lifestyle variables clustered into 3 factors. Factor 1: positive social activity, Factor 2: family-oriented type, Factor S: materialism. 3) By cluster analysis of the 4 factors of the clothing variables, the apparel market of women's clothing was categorised into 3 segments (innovative aesthetics seeker group, brand and status symbols conscious group, clothing unconscious group). 4) The above three segmented groups were also significantly discriminated by lifestyle and demosraphic variables. 5) On the basis of the findings, effective marketing strategies of women's clothing were suggested.

• 한국콘텐츠학회논문지
• /
• 제15권7호
• /
• pp.170-180
• /
• 2015

뉴미디어 기술과 디바이스의 발달에 따라서 유아 교육 분야에서 새로운 콘텐츠에 대한 다양한 시도들이 발생하고 있다. 본 연구는 유아를 대상으로 시지각과 사회성 증진을 목적으로 키넥트를 활용한 에듀테인먼트 콘텐츠을 개발하였다. 시각으로 인지된 내용을 신체를 사용한 그리기를 통해 재현함으로써 시지각 능력을 강화시키고 또래유아와의 놀이 활동 속에서 자연스러운 신체접촉과 협동과정을 경험하여 사회성 증진을 강화시키도록 설계하였다. 이 콘텐츠는 유아의 흥미를 유발할 수 있는 캐릭터 개발 및 스토리 기반의 영상 제작과 프로세싱을 활용한 인터랙티브 프로그래밍을 통해 프로토타입으로 개발되었다. 1차 파일럿 테스트를 통해 개선점을 도출하였고, 2차 파일럿 테스트에서 유아들이 수정된 콘텐츠를 쉽게 따라하고 적극적으로 참여하는 것이 관찰되었다. 이는 개발된 콘텐츠가 아이들에게 자연스럽게 놀이 과정을 통해서 사물을 인지하고 서로 어울림으로써 에듀테인먼트 콘텐츠로서의 가능성을 가지고 있음을 보여주고 있다.

• 한국환경교육학회지:환경교육
• /
• 제23권1호
• /
• pp.36-49
• /
• 2010

The purpose of this study was to investigate whether elementary school parents' environmental literacy varied according to independent variables, to verify specific variables that affected their environmental literacy, and to analyze the correlation between elementary school students' and their parents' environmental literacy. Twelve elementary schools in Seoul and Gyeonggi-Do were chosen for purposive sampling. 342 questionnaires were used for analysis among the 350 questionnaires collected during the study, and their environmental literacy was measured through 55 questions consisted of 12 items for knowledge category, 22 for attitude category, 5 for behavior category, and 3 for skills category with 16 demographic variables. Statistical analysis was conducted on each of the variables that make up environmental literacy through mean t-test, F-distribution, Scheffe test, and Pearson correlation. The results of this study were as follows. (1) there is the difference according to age and career in parent's actual environmental literacy, but there is no difference in geneder, birthplace, residential type, religion and income. The parents in forties scored significantly higher than parents in thirties in subdomains of environmental skill and environmental interest in environmental literacy. And the parents with bachelor's degree scored significantly higher than parents with at least a high school diploma in subdomains of ecological knowledge, knowledge on environmental problems & issue, environmental skill and environmental behavior. (2) the most influential media on parents' environmental literacy is TV, then newspaper, internet and book follow. (3) the correlation between environmental crisis and environmental interest is the highest, but the mainly negative correlation is analysed between knowledge subdomains and other subdomains. (4) there is the correlation between elementary school students' and their parents' environmental literacy.

• 디지털융복합연구
• /
• 제18권6호
• /
• pp.425-433
• /
• 2020

증강현실을 활용한 디지로그 북은 애플리케이션을 다운받은 후 모바일에 내장된 카메라를 Image Marker로 등록된 페이지에 비추면 증강현실이 구현되는 형태로서 콘텐츠 구현 방법에는 단편적 한계점을 나타내고 있다. 이에 본 연구에서는 증강현실 기술을 활용한 디지로그 북에 양방향 인터랙션이 가능한 팝업(Pop-up) 형태의 Multi-Tracking 방식을 제안하였다. 이를 통해 기존 책자형의 디지로그 북과 이번 연구에서 제안한 팝업(Pop-up)형태의 디지로그 북의 두 가지 프로토타입에 대한 증강현실 콘텐츠 구현에 따른 기술적 차별성에 대한 실험을 공인기관에 의뢰하여 검증하였고 시험성적서를 발급받았다. 연구에서 제안한 팝업(Pop-up)형태의 디지로그 북은 가상 이미지를 사용자의 행위(움직임)에 따른 인터랙션 콘텐츠 구현이 가능하여 책의 물리적인 변화자체가 가상콘텐츠에도 전달되는 양방향 인터랙티브 콘텐츠의 장점을 갖고 있으며, 이는 가상 이미지와 인쇄 그림책 간의 상호작용을 유도하고 학습자에게 흥미 유발 및 몰입감을 줄 수 있어 차별화된 디지로그 북의 인터랙션의 표현이 가능할 것으로 보여진다.

• 한국비블리아학회지
• /
• 제30권4호
• /
• pp.91-114
• /
• 2019

본 연구는 MBTI 성격유형별로 이용자를 분류하고, 성격유형별로 선호하는 도서관의 정보자원 및 서비스를 조사·분석하였다. 이를 위해 K대학교 재학생들을 대상으로 성격유형과 선호하는 자원 및 서비스에 대한 설문을 실시하고, 이에 대한 결과를 기반으로 MBTI 성격유형에 맞춰 대학도서관의 맞춤형 정보서비스 제공 가능성을 모색하고자 하였다. MBTI 유형에 따른 자료/정보원 및 서비스 선호도 간 차이를 검증한 결과, 태도지표 유형별 분석에서 자료형태 선호도와 사분할 유형별 분석에서 디지털콘텐츠 유형 선호도에서 유의한 차이가 있는 것으로 나타났다. 16가지 성격유형별 분석에서도 디지털콘텐츠 유형에 유의미한 인식차이가 나타났다. 따라서 대학도서관에서는 성격유형에 맞는 자료와 디지털콘텐츠를 서비스를 제공하기 위해서, 도서관에서 이용자에 대한 MBTI 성격유형 데이터를 수집하는 것이 선행되어야 한다. 이후 이용자가 도서관에 참고정보서비스를 요청하거나 도서, 정보 등을 요청할 때 형태에 맞는 서비스를 제공하거나 콘텐츠별 서비스를 제공하는 것이 필요하다.