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김원주 ( Won Joo Kim ),조용모 ( Yong Mo Cho ),남미아 ( Mi A Nam ),신상희 ( Sang Hee Shin ) 서울시정개발연구원 2008 연구보고서 Vol.2008 No.47
Background and purpose of the study The city is the center of human activities and thus, environmental problems of the city are getting serious. Particularly, due to the green house effect, the average annual rate of temperature has increased by 0.5~1.5℃, and the energy usage of buildings has been increased proportionally to that. In the case of Seoul, it needs to regulate the temperature rise and the energy usage of buildings since Seoul shows the highest building energy consumption. Green roofs business can be helpful to secure green spaces which Seoul lacks and therefore, it can contribute to solve environmental problems and can be used in the energy saving of buildings. The study is purposed to maximize the energy saving effects, which recently draw global attention, against the global warming temperature and the energy price inflation; carry out the green roofs in view of making the best use of green spaces in the city and monitoring thereof; and therefore, find plans to encourage green roofs business. 2. Main results from the study A rooftop afforested building reduces the temperature of the building with soils and plants in summer season and maintains the temperature of the building higher than the ambient temperature in winter season. Accordingly, compare to a concrete rooftop, the afforested rooftop shows more effective heating and thus, it comes to effectively save energy. From the result of temperature measurement, in the case of the soil surface, while the afforested surface shows the difference of 15.3℃ between the minimum temperature of 22.1℃ and the maximum temperature of 37.4℃, non-afforested surface shows the difference of 46.2℃ between the minimum temperature of 20.5℃ and the maximum temperature of 67.2℃. From the result of temperature measurement by the infrared camera, in the case of the non-afforested rooftop, the midday summer temperature reached 70.9℃ but in the case of the afforested rooftop, the temperatures were measured as 30.3℃ in the lawn area and as 28℃ in the shrubbery area. Accordingly, the measured temperature in the afforested rooftop was more than twice lower than the one of the non-afforested rooftop. On the other hand, the green roofs shows the effect to delay the outflow of the inflow water from rain though, the effect is insignificant. Although we have a relatively good harvest from the rooftop garden, the intensive care is demanded and the quality of the crops tends to be lowered due to the characteristics of the rooftop environment. 3. Policy recommendation 1) Carrying out monitoring on the sites applied for the green roofs in Seoul. It needs to carry out the monitoring on public buildings and commercial buildings which have been received government subsidies, approximately 50% of the costs, from Seoul in order to evaluate and improve the business results, i.e., effect measurement on temperature and energy; user evaluations on satisfaction and demand; effect of runoff; and compared testifying for spaces used on other purposes. It needs to improve the current system which the incentive is given to newly constructed buildings only. More positive aid is required. For example, in the case of the existing buildings, if the owner installs gravels which help the suction of rainwater on the rooftop, a benefit like tax reduction should be given to the owner in order to encourage the green roofs. 2) Improvement on the system to expand green spaces for green roofs. It needs to expand green spaces in order to deal with the climate change, save energy and make comfortable spaces. For this, a standard on the afforestation rate should be suggested for the businesses supported by Seoul and consequently, the standard should be reflected when designing buildings. 3) Product development and technical research for constructing green roofs. It has been a while since the green roofs was introduced to our country though, the products for the green roofs are still borrowed from overseas such as Germany and Japan. The development for species of trees and products which fit domestic circumstances has been seldom conducted. Thus, research support and the product development should be continuously made. It is also required for the City Hall of Seoul to make efforts to introduce various products and different ways which fit different construction sites. 4) Arrangement to make the best use of spaces as the spaces for cultivating plants. If the port type crop planting, currently led by Seoul Green Trust, can be carried out and used within rooftop spaces, the rooftops can be afforested without high cost of installation and used as leisure spaces. 5) Going toward the policy which draws voluntary participation beyond supporting. There is a limit for Seoul to offer subsidies to all the applicants who wish to afforest rooftops. Accordingly, the green roofs should be gradually changed to a mandatory duty and should go the way of giving the information and the know-how, encouraging citizens to voluntarily participate in.
포터의 다이아몬드 모델을 이용한 국내 양돈산업의 경쟁력 분석
김민경 ( Min Kyoung Kim ),조원주 ( Won Joo Cho ),진현정 ( Hyun Joung Jin ),김윤두 ( Yoon Doo Kim ),이철희 ( Chul Hee Lee ) 한국농업경제학회 2010 農業經濟硏究 Vol.51 No.4
The consumption of the domestic pork in Korea has been steadily increasing, although the price of the domestic pork has been higher than the one of imported pork. This fact implies that there might exist a certain degree of competitiveness in Korean hog industry. The competitiveness of hog industries was compared by using Poter(1990)` s Diamond Model between Korea and six different countries that have been the big exporters of pork to Korea in Korean pork market. Korean hog industry was found to have strong competitiveness in 「Demand Condition」 indicating consumers may make their consumption decision based on bounded rationality, In the mean time, 「Factor condition」 and 「Finn strategy, structure, and rivality」, represented by production costs and productivity, were found to be low competitiveness factors to the Korean hog industry.
동맥경화증과 치주질환, 전신건강 및 구강건강지표간의 관련성: 예비연구
차은숙 ( Eun-sook Cha ),손기영 ( Ki-young Son ),윤재문 ( Jae-moon Yun ),정원주 ( Won-joo Chung ),조비룡 ( Be-long Cho ),진보형 ( Bo-hyoung Jin ) 대한예방치과·구강보건학회 2017 大韓口腔保健學會誌 Vol.41 No.4
Objectives: This pilot study aimed to obtain preliminary data on the associations between atherosclerosis and periodontitis, physical health status, and general and oral health behaviors. Methods: Thirty-three subjects were recruited from among those who underwent carotid computed tomography (CT) angiography and general health check-up at the Seoul National University Hospital Health Examination Center (SNUHHEC). Two trained dentists conducted a periodontal examination to evaluate probing pocket depth and clinical attachment loss. A self-administered questionnaire was completed by study subjects, following informed consent. Data on physical health status were collected through review of medical records from the SNUHHEC. Information on general health behavior was obtained from the self-reported questionnaire. Descriptive and comparative analyses were performed using IBM SPSS Statistics 21.0®. Statistical significance was set at P<0.05. Results: A marginal, but non-significant association was noted between atherosclerosis and periodontitis (P=0.373). Flossing habit showed a significant association with periodontitis (P=0.007) and obesity (P=0.033). A possible association was noted between daily exercise and flossing (P=0.073). The habitual use of interdental brush also showed borderline association with smoking (P=0.098) and a stronger association with previous periodontal treatment (P=0.067); however, these associations were not statistically significant. Conclusions: Our pilot study did not show an association between arteriosclerosis and periodontal disease. However, positive oral health care behavior, especially flossing, seems to alleviate arteriosclerosis. In other words, in this pilot survey, we confirmed the possibility that healthy oral care behavior can help to alleviate arteriosclerosis. Future large-scale studies are needed to confirm whether positive oral health care behaviors improve overall health.