• 건축역사연구
• /
• 제9권3호
• /
• pp.23-36
• /
• 2000

The bureaucrat-scholars, ruling class of the Choseon Dynasty, used to build small private pavilions for rest and study for themselves. In the early period of the Dynasty, the pavilions had plain shapes with rectangular plan and simple wooden structure without any walls so as to enjoy the surrounding scenery. From the 16th century, the building form began to change into some diverse one by putting in an ondol room, an unique floor heating equipment. The pavilions also began to show regional differences by placing the ondol rooms in the floor. Myonang-jong, a pavilion occupied by a famous bureaucrat-scholar Song Soon, was built at Damyang of the southwest part of the Korean peninsula, so called Honam area, in 1533. At first, the building form followed the ordinary early pavilion shape using simple wooden structure and wooden floor. But when it was rebuilt in 1654 after burning down by war, there happened some changes. An ondol room was put in the center of the floor, of which regarded as a dominant regional characteristic of the Honam area. The change of the building form of Myonang-jong showed that it was the 17th century Honam area got the regional characteristic in the architecture of pavilion.

• KIEAE Journal
• /
• 제16권6호
• /
• pp.115-122
• /
• 2016

Purpose: The study is to measure indoor air pollutants concentration of existing housing and to analyze the causes and assess in accordance with the government's criteria. The research result could be used as data for public health through indoor air quality management of existing housing and more as a reference for new housing. Method: It was investigated 24 middle class housings of metropolitan area in summer which have been built for the past 30 years. Concentration of HCHO, TVOC was investigated in living room at morning and night and concentration of $CO_2$ was investigated in living room and master bedroom at morning and night. SKT100-X5 was used for concentration of HCHO, TVOC and ZGm053UK for concentration of $CO_2$. Result: Average concentration of TVOC was 1.31 times more than that of HCHO and standard deviation of that was 1.73 times higher. Average concentration of $CO_2$ was almost nearly close to 1,000ppm being criteria of the Ministry of Environment.

• 한국학교보건학회지
• /
• 제25권1호
• /
• pp.14-21
• /
• 2012

Purpose: This study was to investigate the attitudes of elementary school students on health curriculum. Methods: Based on the literary considerations and advanced research, a survey was conducted on Osgood's semantic differential scales on 329 fifth and sixth grade students in 6 elementary schools located in U metropolitan city regarding the attitudes towards health curriculum. Data were analyzed using t-test and multiple regression with the SPSS/WIN 18.0 program. Results: The overall attitude average grade was 3.46 in 26 factors, slightly exceeding the standard (3 points) which showed that students had a positive attitude towards health curriculums and thought health curriculums were valuable, necessary, and important classes. For each grade, the fifth grade believed health curriculums were more interesting, new, easy, necessary and valuable classes than compared to the sixth grade, and there were no differences between gender. The variables which affected attitudes in health curriculums included good feelings for health teacher, subject health status, and satisfaction in using the school health room. Conclusion: Because the better they think of health teacher, the higher the positive attitude towards health curriculums, a strategy which can build trust between student meetings not only during class time but also through operating a school health room will be necessary.

• 한국전산구조공학회:학술대회논문집
• /
• 한국전산구조공학회 2002년도 가을 학술발표회 논문집
• /
• pp.330-337
• /
• 2002

The HANARO seismic monitoring system is classified as non-nuclear safety(NNS), seismic category I, and quality class T The seismic monitoring system installed at the instrument room consists of five field sensors and one monitoring cabinet. The field sensors are composed of three triaxial accelerometers which installed at base slab, free field and overhead crane support respectively, a seismic trigger and a seismic switch at base slab. The most parts of analog system except field sensors are not produced any more, the improvement of the system is to be needed. The analog system with magnetic tape recorder is not only out-of-date model but dependent upon foreign technology. So it is difficult to get the spare parts and the cost to buy them is increased. Therefore we have improved the analog seismic monitoring system into a new digital seismic monitoring analysis system(SMAS) except five field sensors. After the installation of the new SMAS, we have carried out the site acceptance test(SAT) to confirm the field functions. The results of SAT satisfy the requirements of the fabrication technical specification. This new SMAS is operating at HANARO instrument room to acquire and analyse the signal of earthquake.

• 교육시설
• /
• 제4권4호
• /
• pp.5-15
• /
• 1997

The purpose of this study is to analyze the plan type of school building, the present situation of the kind of room, and of the area composition, -the whole area of school building, the area per class, the area for each person, and the rate of the area composition by room- and the latest tendency with the utilization of the plans of 43 elementary schools and to offer the fundamental data on planning elementary school hereafter. The content of this study can be summarized and arranged as follows: 1. In contrast to the past the schools which is recently constructing intend to improve the spacial type and the level of area. 2. Specially, the location and the area of special classrooms, and teacher's spases is to be improved urgently in almost elementary schools. 3. Because even in the school with same number of classrooms, it is proved that there is the difference of the area by space in accordance with the type of plane, hereafter it is requested to investigate the efficient plane design. 4. Hereafter, it is urgently required to comprehend the practical application of these schools and to research for the space of the school which is compatible with the field of school on the fonduation of the requirement of users.

• Journal of Nutrition and Health
• /
• 제36권2호
• /
• pp.133-146
• /
• 2003

This study was performed to investigate the in vitro and in vivo anticancer effects of persimmon leaf extracts on human gastric cancer cells. In vitro anticancer effects of persimmon leaf extracts (water extract at 8$0^{\circ}C$ for 3 hours, water extract at room temperature for 48 hours, 50% ethanol extract at 8$0^{\circ}C$ for 3 hours, 50% ethanol extract at room temperature for 48 hours, 75% ethanol extract at 8$0^{\circ}C$ for 3 hours and 75% ethanol extract at room temperature for 48 hours) on SNU16 (Korean gastric cancer cell) were investigated by MTT assay. Persimmon leaf extracts exhibited strong in vitro anticancer effects. We found that the higher the ethanol content of the solvent, the stronger the in vitro anticancer effects. Extraction yields, contents of flavonoids, vitamin A, vitamin C and vitamin E were measured. We found that the higher the ethanol content of the solvent, the higher the extraction yields and the contents of flavonoids, vitamin A and vitamin E. Among persimmon leaf extracts, 75% ethanol 8$0^{\circ}C$ extract showed the highest extraction yield, the highest contents of flavonoids, vitamin A and vitamin E and exhibitied the strongest in vitro anticancer effect on SNU16. Therefore, 75% ethanol 8$0^{\circ}C$ extract was chosen as the material to investigate in vivo anticancer effects. In vivo anticancer effect of persimmon leaf 75% ethanol 8$0^{\circ}C$ extract was investigated in SNU16 transplanted nude mice. Twenty five female nude mice (BALB/c) were blocked into five groups according to body weight and raised for 4 weeks with diets containing 4% (w/w), 8% (w/w) persimmon leaf 75% ethanol 8$0^{\circ}C$ extract, with IT (intratumoral) injection treatment with 1.65 mg/100 $\mu$1, 3.3 mg/100 $\mu$1 concentration every other day 3 weeks after SNU16 was transplanted. Persimmon 75% ethanol 8$0^{\circ}C$ extract significantly lowered tumor weight and tumor volume in SNU16 transplanted nude mice. Tumor weight and tumor volume in all experimental groups were significantly lower than those in the control group. Helper T cell (CD4) levels of mice injected with 3.3 mg/100 $\mu$1 extract significantly increased. Cytotoxic T cell (CD8) levels in all experimental groups significantly increased and helper/cytotoxic T cell ratios in all experimental groups significantly decreased. Natural killer cell and MHC class II molecule in all experimental groups significantly increased. In conclusion, persimmon leaf 75% ethanol 8$0^{\circ}C$ extract exhibited strong in vitro and in vivo anticancer effects against SNU16 cells and it increased cytotoxic T cell, natural killer cell and MHC classII molecule in experimental groups in SNU16 transplanted nude mice.

• 한국실내디자인학회논문집
• /
• 제40호
• /
• pp.94-101
• /
• 2003

This study is mentioning about basic information and guide related block types, through a comparison and an analysis of floor types which is shown as function in block types and public interior spaces. For the range of this survey, it is defind in the beginning of 1970' s to the end of 1990' s which was rapidly developed in hotel industry and also is chosen by 12 places in the first class hotels. On the purpose of this study is written by designing the basic information of architectures, new hotels which are built and managed in urban, refer to the survey and analysis of the characteristic in hotel. The following is conclusion by based on pre-survey of the analysis of a plan and a site in these hotels. First, as a result of analysis in block type, there are equally distributed in three types (in-type, combination type, close-type), except a atrium type exception, in 12 hotels(100%). Second, as a result of analysis of function type in public interior space, Con-course type is consist of 7(58%), Hall type is 5(42%) in the type of room in public interior space, in 12 hotels(100%). Third, the type in lobby on space plan are equally shown by the type of lobby in center(4PL.), of lounge in center(4PL.), and a compromising type(4PL.).

• 수산해양기술연구
• /
• 제48권1호
• /
• pp.91-98
• /
• 2012

This study is aimed to utilize a basic data for setting up an allowable air noise with IMO standard in accommodation and working areas of 24m longer fishing vessels. The air noise in accommodation and working areas of 300 tons class squid-jigger were evaluated and the levels were compared to the allowable levels of IMO. The results indicated that the maximum range of noise levels was estimated to be between 54.8dB (A) and 83.2dB, and the correlation between the distance from the main engine to measuring point and the maximum noise level of each point was shown to be y=-13.8log (r)+92.91 ($r^2=0.821$). In addition, except the case of making an accommodation area near to the engine room in 24m longer jigging vessels, it was evaluated that the accommodation noise regulation of 1,600 tons international voyage vessels with 60dB (A) or an improved noise level with 65dB (A) could be properly applied.

• 컴퓨터교육학회논문지
• /
• 제5권2호
• /
• pp.101-109
• /
• 2002

인터넷을 기반으로 한 원격지 학급간 협동 학습 시스템은 원격지 학급을 연결하는 매칭 시스템, 다양한 보상 체계와 상호 작용으로 실질적인 협동 학습이 이루어질 수 있도록 한 커뮤니티 시스템, 개인이나 모둠 및 학습실의 학습 성취도를 평가하고 학습 결과물을 공유할 수 있는 리포트 시스템으로 구성하였다. 특히 협동 학습 과정을 사전 준비 단계, 모둠 구성 단계, 상호 작용 단계, 결과 협의 단계, 평가 정리 단계로 구분하여 시스템에 적용시켰다. 이 시스템은 다양한 상호 작용과 책임 있는 모둠 활동을 제공하므로 교사는 자연스럽게 ICT 활용 교육에 자신감을 갖게 되고, 학생은 정보화 사회에 필요한 기초적인 ICT와 공동체 의식 습득할 것이다.

• 항공우주기술
• /
• 제9권2호
• /
• pp.8-13
• /
• 2010

축추력의 효과적인 제어는 터보펌프의 작동 안정성을 확보하는 데 중요한 기술 중 하나이다. 현재 개발 중인 75톤급 로켓엔진용 연료펌프에 대한 축추력 측정을 상온의 물을 매질로 하여 실시하였다. 시험 결과, 연료펌프의 축추력은 펌프 베어링의 축방향 하중 조건을 만족하는 것으로 예상되었다. 또한 연료펌프의 축추력은 대체로 유량이 작을수록 커졌다. 그리고 플로팅 링 실과 임펠러 사이의 간극이 바뀌었을 때, 연료펌프의 축방향 하중과 후방 누설 유량이 변화하는 것을 확인하였다.