• 한국콘텐츠학회논문지
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• 제12권3호
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• pp.449-460
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• 2012

1960년대 이후, 우리나라의 산업화가 급격하게 진행되고 도시가 기능적으로 개발되면서, 도시내부의 강을 중심으로 하는 수변공간은 도로건설과 비선호성시설의 집적으로 도시민의 삶의 공간에서 소외되기 시작하였다. 특히, 산업화시대인 1970~80년대에 폐수와 쓰레기로 오염된 강은 생태 친수공간으로서의 역할을 상실하고 하수구의 기능으로 전락하였다. 그러나 21세기에 들어서서 지속가능한 도시에 대한 요구와 도시의 쾌적성에 대한 수요가 증가하면서, 도시민은 도시 내에서 맑은 물과 쾌적한 수변공간을 갈구하게 되었고, 최근에는 도시재생의 중심적인 공간으로 수변공간이 주목받고 있다. 본 연구에서는 도시 수변공간에 대한 이용현황과 계획의 문제점을 살펴보고, 도시 수변공간이 갖는 입지적 특성을 바탕으로 한 수변공간 활용방안을 분석하여, 우리나라의 도시적 여건에 부합되는 친환경적이며 도시재생에 기여하는 지속가능한 수변공간의 관리방안을 제시하고자 한다.

• International Journal of Human Ecology
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• 제9권2호
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• pp.107-116
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• 2008

A new movement in forming community villages for better living standards is becoming popular. In order to sustain a proper community, it is essential to design proper community programs and facilities, which can encourage the proactive participation of residents. In this study, detailed aspects of the Mindlre (Dandelion) community (including formation process and management of the village) are investigated. The Mindlre community is a successful community village in Korea concerned with residents' participation and community activities. The community is located in Sancheong, Gyungsangnamdo province in Korea. The study methods are references, field trips, and interviews with residents. Six areas were surveyed and investigated: the physical environment of the Mindlre community and eco-friendly elements, respondents' background and the motivation to join, residents composition, residents' participation in the formation process of the community, self-management systems and common activities, and residents's life satisfaction. The mindlre Community was founded on Christian religions faith. The primary idea of this village was building a new hope for rural areas without discrimination. The size of the village was expanded with housing for teachers and students who were linked with the Mindlre School (substitution school). When the community was founded, existing shapes of the village were preserved. The village was physically renovated based on the original environment, in addition nature friendly materials and methods were used. The residents were proactively involved in the community through regular meetings, self-regulation, and community worship. Although the survey results should that most residents were highly satisfied with living standards, there seemed to be no clear division between community facilities and private houses. A systematic and detailed space planning technique was required. In addition, various community facilities are required due to the expansion of the community.

• Structural Engineering and Mechanics
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• 제53권3호
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• pp.519-536
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• 2015

On-line electric vehicle (OLEV) is a new eco-friendly transportation system that collects electricity from a power cable buried beneath the road surface, allowing the system to resolve various problems associated with batteries in electric vehicles. This paper presents a finite element (FE) based thermo-mechanical analysis of precast concrete structures that are utilized in the OLEV system. An experimental study is also conducted to identify materials used for a joint filler, and the observed experimental results are applied to the FE analysis. Traffic loading and boundary conditions are modeled in accordance with the related standards and environmental characteristics of a road system. A series of structural analyses concerning various test scenarios are conducted to investigate the sensitivity of design parameters and to evaluate the structural performance of the road system.

• 교육녹색환경연구
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• 제12권2호
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• pp.71-82
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• 2013

School Landscape Planning in Korea recently due to the implementation of green building certification system as a whole outside of the school environment and create eco-friendly, but not has not been linked with the curriculum. The purpose of this study is linked to the curriculum that can be used actively in learning activities is to landscape the school. Considering curriculum for elementary landscape plan provides direction results of this study can be summarized as follows: First, the elementary school years in Chapter 3, the type and number of species of plants and animals that appear in the textbooks examined the results of the analysis that appears to know what plants and animals were the most common. Second, seven schools in Gyeonggi Province in Chapter 4 investigated the status of the landscape. The current landscape of the school curriculum, whether in agreement with the results of this comparison indicate that much of a difference could be seen. Therefore, future elementary landscape plan in accordance with the finality of education curriculum will be developed to fit.

• 한국융합학회논문지
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• 제9권7호
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• pp.199-203
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• 2018

온실가스 배출규제에 따라 국내 조선소를 중심으로 LNG연료로 추진되는 친환경 선박기술 도입에 박차를 가하고 있는 실정이다. 그러나, 선박의 LNG 연료공급을 위한 극저온 펌프 (Cryogenic Pump) 제작의 국내 기술력은 매우 미흡한 현실로서 핵심 부품의 설계와 제작기술이 절실한 시점이다. 그리하여, 본 연구는 선박용 LNG 공급시스템용 극저온 잠액식 원심펌프의 핵심부품인 로터에 대하여 기술하고자 한다. 따라서, 재료선정을 위한 실험적 및 해석적 방법을 통한 최적결과를 도출하여 기술개발의 기초자료로 활용하고자 한다.

• Structural Engineering and Mechanics
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• 제74권5호
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• pp.671-678
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• 2020

In this work, the dynamic properties of a high performance concrete containing glass powder (GP) was studied. The GP is a new cementitious material obtained by recycling waste glass presenting pozzolanic activity. This eco-friendly material was incorporated in concrete mixes by replacing 20 and 30% of cement. The mechanical properties of building materials highly affect the response of the structure under dynamic actions. First, the resonant vibration frequencies were measured on concrete plate with free boundary conditions after 14, 28 and 90 curing days by using an alternative vibration monitoring technique. This technique measures the average frequencies of several excitations done at different points of the plate. This approach takes into account the heterogeneity of a material like concrete. So, the results should be more precise and reliable. For measuring the bending and torsion resonant frequencies, as well as the damping ratio. The dynamic properties of material such as dynamic elastic modulus and dynamic shear modulus were determined by modelling the plate on the finite element software ANSYS. Also, the instantaneous aroused frequency method and ultrasound method were used to determine the dynamic elastic modulus for comparison purpose, with the results obtained from vibration monitoring technique.

• 한국가구학회지
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• 제23권3호
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• pp.290-297
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• 2012

Recently, interest in wooden construction have been growing by increasing needs and demands for eco-friendly and traditional wooden building(Hanok). Especially, Hanok has the technical development in manufacturing the mortise-tenon joint without fasteners(precut), so it could be called to modernization, industrialization and popularization. But the structural design and analysis of the structure were not regulated and had the difficulty to consider the variation of wooden member and to conduct the difficulty in the structural analysis and the design of the joint. In this study, the stiffness ratio of wooden mortise and tenon joint was evaluated according to the vertical loading, lintel and loading speed. The joint was distinguished in semi-rigid joint regardless of their factors. The stiffness ratio was 0.40 in vertical loading, 0.50 without vertical loading and 0.44 in horizontal loading with high speed. This study would be utilized to the structural analysis and design with structural analysis and design program.

• KIEAE Journal
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• 제12권1호
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• pp.99-104
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• 2012

In event of selecting construction materials, taking ones found easily around make embodied energy saved. The earth construction could be an eco-friendly engineering from a views of keeping the embodied energy. The pour earth method construction, as one of earth constructions, improves liquidity of earth-mixed properties to build walls or foundations. This study is aimed at evaluating possibilities as to machinery constructions using pumping cars or excavators to be applied on natural non-dried earth which are purchased from sites neighboring to subject building. The study showed that the pumping car used construction was smoothly carried out without any remarkable difficulties and further, a compressed strength was found to keep a certain degree to possibly construct low-story buildings. However, it showed some different levels as to a compressed strength by locations of buildings. In the construction course, we couldn't use remicon plants or a remicon due to field conditions and we are forced to take excavators in compounding or mixing works. But, it is evaluated that actually liquidity or compressed strength will be better than in case of using machineries like remicon plants. These results make us determine that the wall construction using machineries is possible.

• KIEAE Journal
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• 제17권3호
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• pp.45-50
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• 2017

Purpose: There have been more researches focused on eco-friendly construction practices in order to save energy consumed and these practices have been extensively applied for constructing buildings. However, researches on energy consumption saving and efficiency for hospital facilities have been still insufficient. This research aims to draw factors that affect energy efficiency of hospital buildings through literature reviews and perform an expert-survey using AHP(Analytical Hierarchy Process) method in order to analyze the importances and priorities of these energy efficient factors. Method: Using the AHP method, this paper suggests the importances and priorities of factors to affect energy efficiency in hospital buildings. The survey of experts at a architectural design and a construction management companies was conducted via e-mail and mail. Result: As a result, factors of window and door, insulation, ventilation, and natural lighting turned out relatively important as respectively 0.104, 0.102, 0.101, and 0.095 n the energy efficiency in hospital buildings, while factors of artificial lighting, geothermal, solar heat, and control did unimportant as 0.027, 0.033, 0.043, and 0.053.

• KIEAE Journal
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• 제10권6호
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• pp.139-144
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• 2010

The demands are increasing for the efficient heating and cooling system and thermal comfort environment because of changes in climate and environment, and deterioration of buildings and facilities can cause education budget to increase. So the study to apply heating and cooling system to university is urgently needed to improve an optimum energy saving system, educational environment and convenience of maintenance. For this reason, we selected a university campus in Seoul then came to understand the current situation and found some problems. We drew alternatives from comparative analysis of them. It selects representative building and carries out economic analysis to evaluate characteristics of energy consumption and economics on each type of heating and cooling system. As a result we drew the optimum system from those processes as previously stated. We studied 3 available systems, absorption chiller, EHP(Electric Heat Pump) and GHP(Gas Engine Heat Pump). According to LCC analysis suppose that the value of EHP is 1, it came out that the value of absorption chiller is 1.5 and the value of GHP is 2.2. This study, suggesting the optimum heating and cooling system, will support educational and research activities furthermore effect to maximize energy efficiency. Ultimately it is expected that it will contribute to make eco-friendly Green Campus.