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Park J.,Korea Institute of Construction Technology | Hong T.,Yonsei University
Renewable and Sustainable Energy Reviews | Year: 2013

Recently, many countries have been making an effort to reduce their carbon dioxide (CO2) emission, and as part of such effort, the United Nations Framework Convention on Climate Change (UNFCCC) adopted the Kyoto Protocol in 1997. South Korea is very likely to be included in the second batch of countries that must reduce their greenhouse gas emission after the end of the implementation of the Kyoto Protocol in 2012. Reducing the country's CO 2 emission, however, can have an impact on the economy. Therefore, in this study, the correlations between South Korea's economic growth, CO 2 emission, and energy consumption were analyzed. The analysis period was from Q1 1991 to Q4 2011, and the analysis methods that were used were regression analysis for the relational analysis among the various overall indices, and the Markov switching model for a more detailed analysis. The results of the analyses showed that South Korea's economic growth and CO 2 emission were coincidental. The correlation analysis of the country's economic growth and energy consumption showed a significant correlation between economic growth and fossil fuels, which emit CO2, such as coal in the industrial sector, petroleum products in the industrial and transportation sectors, and liquefied natural gas (LNG) in the residential/ commercial and industrial sectors. It is expected that the results of this study will pave the way for the conduct of various researches on controlling the country's CO2 emission management, and for suggestions for such to be given, such as policies for reducing the energy consumption in each sector, using the methodology proposed in this study. © 2012 Elsevier Ltd. All rights reserved.

Kang S.-T.,Korea Institute of Construction Technology | Kim J.-K.,Korea Advanced Institute of Science and Technology
Cement and Concrete Research | Year: 2011

In this study, the effect of the fiber orientation distribution on the tensile behavior of Ultra High Performance Fiber Reinforced Cementitious Composites (UHPFRCC) was investigated. The tensile behavior was explored separately in two stages; pre-cracking and post-cracking tensile behaviors. Pre-cracking tensile behavior is expressed using the mechanism of elastic shear transfer between the matrix and the fiber in the composites. Post-cracking tensile behavior was expressed as the combined behavior of the resistance by the fibers and the matrix, considering a probability density distribution for the fiber orientation distribution across crack surface and a pullout model of steel fiber. The effect of the fiber orientation distribution was found to be very small on pre-cracking behavior, but to be significant on post-cracking behavior of UHPFRCC. The predicted results were compared with the experimental results, and the comparison presented satisfactory agreement. © 2011 Elsevier Ltd.

Korea Institute of Construction Technology | Date: 2014-06-18

An integrated rainfall calculation method using X-band dual-polarimetric radar measurement data includes a precipitation classification step of classifying hydrometeors into four types of snow, rain/snow, rain and non-meteorological target through a fuzzy logic technique using a correlation coefficient (cross correlation coefficient,

Korea Institute of Construction Technology | Date: 2014-09-22

According to one aspect of the invention, an inlet of an underground reservoir having a multiple-stage structure includes: a flow portion, wherein water flowing in the flow portions; a drop portion transporting the water to a underground reservoir from the flow portion; and an inlet portion having a multiple-stage structure to generate a vortex in the water to be transported to the drop portion.

Korea Institute of Construction Technology | Date: 2014-06-24

A facility management system and a method thereof using perspective definition metadata, and more specifically, to a facility management system and a method thereof using perspective definition metadata, in which a perspective definition metadata structure for interconnecting Building Information Modeling (BIM) and external Facility Management (FM) data considering variability and expandability from the perspective of a user is used to improve expandability of the system by extracting information required for the role of the user from diverse heterogeneous data sources so that management and reusability functions of the system can be maximized even after the system is developed.

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