• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2004.04b
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• pp.145-149
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• 2004

In this study, leed-free piezoelectric ceramics were investigated for pressure sensor applications as a function of the amount of $La_2O_3$ addition at BNKT system. With increasing amount of $La_2O_3$ addition, density and dielectric constant were increased up to 0.9wt% addition and decreased after 0.9wt% addition, electromechanical coupling factor$(k_p)$ and mechanical quality factor$(Q_m)$ showed the maximum values at 0.2wt% addition and decreased after 0.2wt% addition. The $k_p$, density, dielectric constant and $Q_m$ were showed the optimum values of 0.40, $5.71g/cm^3$, 768 and 118 at $La_2O_3$ 0.2wt% addition, respectively.

• KIEAE Journal
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• v.13 no.3
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• pp.21-26
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• 2013

Recently, as the concern over environmental problem has been serious all over the world, carbon has become a key issue to mitigate the problem. In the field of Architecture, various sustainable assessment systems and LCCO2 assessment strategies have been developed, guiding low carbon building while planning. However, assessment system for low carbon neighborhood, which can be more efficient strategy, is still in the stage of research. In this paper, as a research for low carbon assessment system and planning guideline for neighborhood, scope meeting domestic condition has been set and sustainable assessment system for neighborhood, which is similar to low carbon concept, have been compared. LEED-Neighborhood Development, BREEAM-Communities, CASBEE-Urban Development, and GBCC-Apartment Houses were used for comparison. As a result, it is found that those systems has many differences in judging system, aggregating method, scope of evaluation, and relations with a building assessment system. The concern about carbon is not insufficient yet. Finally, assessment system for low carbon neighborhood, which is not only for establishing the plan, but also for giving guideline at the very first state of the plan, should be developed as fast as passible. With the result of this paper, establishment of assessment criteria and the way to measure quantitative $CO_2$ should be studied forward.

• KIEAE Journal
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• v.12 no.2
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• pp.59-64
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• 2012

In the United States, the implementation of the LEED green building rating system has dramatically changed the construction industry to motivate construction participants to employ green building approaches into projects. The objectives of green building rating systems are to achieve the triple bottom line benefits including economic, social and environmental benefits that are able to not only provide an excellent amenity to building users, but also to reduce environmental problems associated with buildings and accomplish financial benefits. Since the implementation of green building features has many benefits, the purpose of this study is to identify occupants' satisfaction of green building and the transformation of occupants'' attitude toward sustainability by conduct an in-depth case study of the cutting-edge green building project located in Atlanta, GA, USA. Based on this case study, it is possible to suggest construction participants in Korea to identify how green building can improve occupants'' satisfaction of the building and change their attitude toward sustainability.

• Journal of Korean Association for Spatial Structures
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• v.9 no.3
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• pp.49-58
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• 2009

This paper is to draw basic data for the revitalization of the sustainable buildings and the improvement of sustainable building design technology in Korea by analysing the design techniques of sustainable building and the application of the techniques applied to the large volume buildings through the study of foreign cases. This study introduces the design elements of sustainable building applied to the two winter sports stadia and one convention centre which have recently completed for the 2010 Winter Olympics in Canada and analyses the design techniques of sustainable building by the lists of LEED Green Building Rating System as well.

• Proceedings of the Korean Vacuum Society Conference
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• 2003.02a
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• pp.184-184
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• 2003

• Proceedings of the SAREK Conference
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• 2006.06a
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• pp.1055-1060
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• 2006

The Korean Green Building Certification System was activated from 2005. The purpose of it is to improve the quality of residential unit. Recently, people stay inside of building more than for 90% of a day Accordingly, it is really important for them to make the quality of Indoor Environmental better, in brief, to develop the indoor environmental factor in KGBC is important. One of the best way to develop the system is to do research based on POE because the area of problem can be realized. Accordingly, we get the information about POE from another research for the part of the indoor environment for residential unit to have the critical mind about the KGBC, and tried to compare the factors to another which is from foreign Green Building Certification System such as LEED, BREEAM, GBTool, After they have been analyzed, we could find that some of factor need to be revised and added. Also, there was one problem that many part of factor was created without any consideration of direction of each space in residential unit.

• Journal of the Korean Professional Engineers Association
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• v.42 no.5
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• pp.32-36
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• 2009

This project located in IFEZ(Incheon Free Economic Zone) is the first central heating and cooling type for high-rise residential building in korea. The design was performed as the joint venture between Cosentini from U.S.A and wooowon, and our design concept was to save energy. LEED application from USGBC is going on in progress for the first residential building in korea. Careful attention was paid from schematic design for not a durability of structural and architectural, but also durability and safety of M.E.P.

• International Journal of High-Rise Buildings
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• v.6 no.4
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• pp.315-322
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• 2017

A modern and highly-sustainable addition to the skyline of Seoul, South Korea has been completed; the Federation of Korean Industries Headquarters (FKI). The signature saw-toothed exterior wall of the 245-meter tall tower and the contrasting smooth nature of the pipe-shell structured podium "egg" gives this project and site a unique identity in the city.

• Proceedings of the Korean Vacuum Society Conference
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• 1992.02a
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• pp.51-51
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• 1992

• Proceedings of the Materials Research Society of Korea Conference
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• 1998.08a
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• pp.141.4-141
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• 1998