• Journal of KIBIM
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• v.5 no.4
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• pp.30-36
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• 2015

The Leadership in Energy and Environmental Design (LEED) has provided abundant resources and guidelines for a new project to become a sustainable anchor in the neighborhood. Paired with a range of checklist, LEED has strong influence on the standards for a sustainable building, and it also has played an iconic role in energy-efficient architecture. However, it is still unclear as to whether or not an LEED certified building enhances environmental benefits to its surroundings. If an LEED certification promises a baseline for an eco-friendly building, then a group of these structures should ensure significant environmental benefits to the society. This is the main question of this study, and the authors answer this hypothesis by examining the relationship of LEED certificates and their influence on outdoor temperature, especially in terms of urban heat island effect. The goal of this paper is to analyze the influence of the LEED certification on urban temperature as an indicator of sustainable architecture's regional interactions. If an LEED certificate is regarded as a strong contributor to a sustainable built environment, then a group of these certificates should result in greater benefits to society. To this extent, the authors question if there is any possible relationship between a large concentration of LEED certified sites and the temperature of their surroundings. To properly assess the research direction, Global Moran's I analysis, Local Moran's I analysis, and Hot Spot analysis are implemented to find the clustered areas of LEED certified buildings. For examining relationships between clustered area and its temperature, correlation efficients are calculated.

• Korean Journal of Construction Engineering and Management
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• v.9 no.4
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• pp.84-91
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• 2008

"Eco-friendly construction" is an emerging issue in the building industry. Main purpose of the eco-friendly construction is to sustain the health and environment of building residents and to minimize the harmful effect on their environment. Apartment residents have great concern on eco-product, since many cases are reported that Sick Building Syndrome is caused by toxic substance from building materials. Environmental performance is to meet through using the highest grade eco-friendly materials. However, generally eco-friendly materials are more expensive than normal materials, Therefore, using eco-friendly materials at public housing project is limited to economical aspect. The purpose of this paper is development of eco-friendly material selection model considered cost efficiency. The selection of Eco-friendly finishing materials and their methods are constructed to consider environmental performance level and cost index compositively. Development of eco-friendly material selection method is economic and reasonable one when public housing is constructed.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.953-956
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• 2007

"Eco-friendly construction"is an emerging issue in the building industry. Main purpose of the eco-friendly construction is to sustain the health and environment of building residents and to minimize the harmful effect on their environment. Apartment residents have great concern on eco-product, since many cases are reported that Sick Building Syndrome is caused by toxic substance from building materials. Environmental performance is to meet through using the highest grade eco-friendly materials. However, generally eco-friendly materials are more expensive than normal materials. Therefore using eco-friendly materials at public housing project is limited to economical aspect. The purpose of this paper is development of eco-friendly material selection model considered cost efficiency. The selection of Eco-friendly finishing materials and their methods are constructed to consider environmental performance level and cost index compositively. Development of eco-friendly material selection method is economic and reasonable one when public housing is constructed.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.613-617
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• 2007

To achieve project successfully in domestic construction site, pre-management of risk is important factor. Synthesis Construction Document made early construction is representative as means of pre-management of risk. But, Synthesis Construction Document is not working properly for pre-management of risk because the level is low as Synthesis Construction Document is made formally and the time is too late to pre manage the risk for various factor. A epoch-making method that differ with existing need to solve this deep-rooted problem of domestic construction site. So, this study is analyzing to achieve subject to heighten level Synthesis Construction Document and shorten creation period with "S"construction company(introducing 6sigma by tool of management innovation 6 sigma)'s data and offering an opportunity that heightens effectiveness and goes forward and aims possibility about construction site suitability of 6sigma by confirming Pilot Test.

• The KIPS Transactions:PartC
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• v.12C no.3 s.99
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• pp.347-360
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• 2005

E-Government service is national project that is necessary for international competitiveness, openness of government and effectiveness of governmental work process. E-Government security is very important because it treats data has relatively high sensitivity. But, until now, the development point of E-Government service has been limited to only it's contents and infrastructure based on web without consideration of E-Government security. Lately research for E-Government security has been studied by some advanced country of E-Government service, but it is insufficient. To construct E-Government security based on web Infra, first of all, analysis of web service security technology is needed to precede. And then research for appling the technology to E-Government service are required. We propose secure E-Government service scenario with web service security technology based on development stages of E-Government service. We also suggest overall view and secure scenario of E-Government service in Integrated Computing Environment.

• Journal of the Society of Disaster Information
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• v.8 no.4
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• pp.347-361
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• 2012

To find out the major factors affecting the pedestrian satisfaction, the quantitative evaluation on the walking environment were carried out using questionnaire with the 5-point Likert scale in the selected 6 community roads in Seoul. Data were analyzed using descriptive, correlation, and regression analysis. One of main findings reported that pedestrians are not satisfied yet with pedestrian environment(Mean=2.88, S.D.=1.12). The correlation analysis reported 'Safe to walk' (R=.640,p=.001), 'Feel like walking' (r=.603, p=.001), 'Enjoyable to walk'(R=.601,p=.001), and 'Adequate for walking & dialogue'(R=.586,p=.001), are top four factors that positively correlate with overall pedestrian satisfaction. Results indicate that safety should be considered in priorities but amenity development be thought to be important in pedestrian improvement projects. And a broad public participation in decision-making is needed for the effectiveness of the project.

• Korean Institute of Interior Design Journal
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• v.19 no.1
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• pp.245-252
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• 2010

The element of the civic size is much more emphasized than that of the past national size in competitiveness of the information society and knowledge based society like today. It is for the beautiful and fresh civic creation like the civic size industry, historical culture, and environment to be the competitiveness. Especially, the city of elegant and specialized space is a role of enhancing the quality of the city than any other area. Recently, Seoul is decided as the capital of the world design in ICSID held on San Francisco at 2007. It is an opportunity for the Seoul to leap as the design city which made a miracle of the Han River as the industrial city. However, the local history, the axis of the traditional time, the axis of the space, and the direction of the local development are deficient, because the public design business is progressed in very short term and at improvising which has been done in local government. It is impossible for people to take part in actively and it is fallen down for the city to make a sustainable possibility. In this paper, I would like to find out how to make the local identity and help the local activity. It is suggested to make the fun, comfortable and playing street using the theme street by storytelling. Eventually, the object of this paper is to review the effectiveness of the method where the Itaewon of design Seoul street construction business is applied by the theme street of the storytelling.

• Journal of Technology Innovation
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• v.3 no.1
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• pp.1-34
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• 1995

Since 1982, the government of Korea has actively promoted vertical cooperative R&D programs between government-sponsored research institutes (GRIs) and private firms. A number of firms participated in the programs because cooperative R&D could lower the risk and could contribute to rapid commercialization of many technologies. This paper examines the effectiveness of vertical cooperative R&D projects by the modes of cooperation between GRIs and industrial firms, and analyzes the performance of participating firms' technology sourcing strategies for commercial utilization of cooperative R&D results at the project performed from 1982 to 1989 under the Government-Industry Cooperative R&D Program sponsored by the Ministry of Science and Technology(MOST) in Korea. The cooperative R&D projects are classified into 4 groups by two criteria, i.e., the level of participation of firms, and the breadth of cooperation. The findings suggest that firms should actively participate in cooperative R&D projects. In addition, in order to enhance commercial success, cooperation between GRIs and industrial firms should not be limited to R&D stage only. The breadth of cooperation should be extended to commercialization stage. Small- and medium-sized firms participating in vertical cooperative R&D projects in Korea usually lack internal technological capabilities that are needed to commercialize the results of cooperative R&D. Three different technology sourcing strategies - exclusive cooperative R&D strategy, in-house development augmented cooperative R&D strategy, and licensing-in supplemented cooperative R&D strategy - are empirically derived through cluster analysis of the relative usage rates cooperative R&D and of other supplementary technology acquisition methods. The findings suggest that the firms participating in vertical cooperative R&D projects should try to utilize other supplementary technology acquisition methods in order to achieve commercial utilization of the vertical cooperative R&D results.

• Geomechanics and Engineering
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• v.13 no.6
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• pp.1011-1025
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• 2017

The geological conditions surrounding the Jijiapo Tunnel of the Three Gorges Fanba Highway project in Hubei Province are very complex. In this paper, a 3-D physical model was carried out to study the evolution process of filling-type fracture water inrush and mud gush based on the conditions of the section located between 16.040 km and 16.042 km of the Jijiapo Tunnel. The 3-D physical model was conducted to clarify the effect of the self-weight of the groundwater level and tunnel excavation during water inrush and mud gush. The results of the displacement, stress and seepage pressure of fracture and surrounding rock in the physical model were analyzed. In the physical model the results of the model test show that the rock displacement suddenly jumped after sustainable growth, rock stress and rock seepage suddenly decreased after continuous growth before water inrushing. Once water inrush occured, internal displacement of filler increased successively from bottom up, stress and seepage pressure of filler droped successively from bottom up, which presented as water inrush and mud gush of filling-type fracture was a evolving process from bottom up. The numerical study was compared with the model test to demonstrate the effectiveness and accuracy of the results of the model test.

• International Journal of Stem Cells
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• v.11 no.2
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• pp.177-186
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• 2018

Background and Objectives: Glial scarring and inflammation after spinal cord injury (SCI) interfere with neural regeneration and functional recovery due to the inhibitory microenvironment of the injured spinal cord. Stem cell transplantation can improve functional recovery in experimental models of SCI, but many obstacles to clinical application remain due to concerns regarding the effectiveness and safety of stem cell transplantation for SCI patients. In this study, we investigated the effects of transplantation of human mesenchymal stem cells (hMSCs) that were genetically modified to express Olig2 in a rat model of SCI. Methods: Bone marrow-derived hMSCs were genetically modified to express Olig2 and transplanted one week after the induction of contusive SCI in a rat model. Spinal cords were harvested 7 weeks after transplantation. Results: Transplantation of Olig2-expressing hMSCs significantly improved functional recovery in a rat model of contusive SCI model compared to the control hMSC-transplanted group. Transplantation of Olig2-expressing hMSCs also attenuated glial scar formation in spinal cord lesions. Immunohistochemical analysis showed that transplanted Olig2-expressing hMSCs were partially differentiated into Olig1-positive oligodendrocyte-like cells in spinal cords. Furthermore, NF-M-positive axons were more abundant in the Olig2-expressing hMSC-transplanted group than in the control hMSC-transplanted group. Conclusions: We suggest that Olig2-expressing hMSCs are a safe and optimal cell source for treating SCI.