• Journal of the Korean Solar Energy Society
• /
• v.38 no.6
• /
• pp.27-36
• /
• 2018

Typical Meteorological Year Dataset is necessary for the renewable energy feasibility study. Since National Renewable Energy Laboratory has been built Typical Meteorological Year Dataset in 1978, gridded datasets taken from numerical weather prediction or satellite imagery are employed to produce Typical Meteorological Year Dataset. In general, Typical Meteorological Year Dataset is generated by using long-term in-situ observations. However, solar insolation is not usually measured at synoptic observing stations and therefore it is limited to build the Typical Meteorological Year Dataset with only in-situ observation. This study attempts to build the Typical Meteorological Year Dataset with satellite derived solar insolation as an alternative and then we evaluate the Typical Meteorological Year Dataset made by using satellite derived solar irradiance at Daejeon ground station. The solar irradiance is underestimated when satellite imagery is employed.

• Journal of the Korean Society for Railway
• /
• v.5 no.4
• /
• pp.201-208
• /
• 2002

This study suggests a new paradigm to build the identity of railway culture design, since it plays a critical role in enhancing competitiveness of culture and design. It is considered to be a valuable factor to improve users' satisfaction and to have a new effect on the railway industry. This study is focused on systematic study on the culture ＆ design and competitiveness for railway industry, that emphasizing on making necessary strategic scenarios accordingly. Consequently, it is going to make higher added values to secure a footing and advanced images of railway industry.

• Proceedings of the KSR Conference
• /
• 2002.10a
• /
• pp.326-334
• /
• 2002

This study suggests a new paradigm to build the identity of railway culture design, since it plays a critical role in enhancing competitiveness of culture and design. It is considered to be a valuable factor to improve users' satisfaction and to have a new effect on the railway industry. This study is focused on systematic study on the culture and design, conditions and competitiveness for railway culture design, that emphasizing on making necessary strategic scenarios accordingly. Consequently, it is going to make higher added values to secure a footing and advanced images of railway industry.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2023.11a
• /
• pp.259-260
• /
• 2023

This study aims to build VR using BIM at our actual site, simulate it in a realistic background, and simulate new safety-related technologies being developed by our company rather than safety education contents to review optimal use plans for each field type so that the new technology can be effectively applied in the field.

• Kyungpook Mathematical Journal
• /
• v.54 no.1
• /
• pp.1-9
• /
• 2014

We build new Hilbert-type integral inequalities in the whole plane with the non-homogeneous kernel involving some parameters and the best constant factors. We also consider their reverse.

• KIEAE Journal
• /
• v.6 no.3
• /
• pp.3-10
• /
• 2006

As environmental problems and water-shortage phenomenon become a global issue, many states look for the effective method to use water resources. So, decentralized rainwater management is recognized as a new water management system that rainwater can be infiltrated and used on-site. But it is little difficult to build a park, lake, and forest for evaporating rainwater in city because the land price of city is very high. In order to build an excellent infiltration system for a dwelling and a park in Korea, KICT has developed Linear infiltration system. This infiltration system is consist of first flush treatment, storage and infiltration, overflow control system. These elements are connected closely and working as a combined system. A storm sewer can be changed by the linear infiltration system. This study is to make design guideline using Linear infiltration system in apartment house. So ATV-DVWK-M13, FLL and present condition of Korean rainwater system were analyzed and the guidelines direction were set up. Through this study, a foundation is prepared to build the decentralized rainwater management of apartment house.

• Journal of Hydrogen and New Energy
• /
• v.28 no.1
• /
• pp.106-112
• /
• 2017

The present study describes flow induced noise generated from a ball valve used for a gas pipeline. Noise generation from a ball valve mainly induces by interference between unstable(or fluctuating) leakage flow and pipe wall when the ball valve is working closed or opened. To measure the positions of the noise source and the amplitude of noise with respect to measuring frequencies, a commercial acoustic camera is introduced. Noise characteristics generated by the ball valve have been performed by four valve opening rates: 30, 50, 70 and 100 percents. It is noted that 100 percent opening rate means that the valve is fully opened. Throughout the experimental measurements using the acoustic camera, the location of the noise source and the noise amplitude with respect to the frequencies for the test ball valve are clearly evaluated. It is found that the dominant frequencies come from the fluctuating flow at the downstream of the ball valve for four opening rates are observed between 3,000Hz and 3,200Hz. Maximum noise amplitude comes from the ball valve reaches 75dB at the valve opening rate of 50 percent.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.26 no.2
• /
• pp.106-113
• /
• 2012

Recently laws have been enacted to build and promote the use of smart grid. There are also increasing demands for the compliance with international trade agreements and the related international standards. Due to these rapid changes in electric power industry and the market expansion, importances of new technologies and processes have been being increased. To reflect these international trends, the government have carried out the designation of new technology for electric power industry to promote domestic industries and national competitiveness by inspiring technology developments in individual or private industry sectors. In this paper analysis of the current status of the designation of the new technology of electric power has been presented including its problem and effect on the related industries. The analysis is expected to be utilized to enhance sound development and to vitalize the electrical new technology regulation.

• Journal of the Korean housing association
• /
• v.26 no.2
• /
• pp.47-56
• /
• 2015

Traditional Hanok in modern society, depending on the improvement of economic and cultural level is evolving as a modern Hanok. An ideal of traditional Hanok and convenience of a modern housing does not match rather conflicting. This study deals the transformation of a new Hanok, which are build in Jeollanam-do province sponsored by local government from 2007. The subjects was selected 34 cases from Sunchon and Damyang which are build sponsored by Jeollanam-do local government from 2009 to 2011. The report is a design drawing of a Hanok, architectural survey of the Hanok research using questionnaires and interviews with the client or a resident, was confirmed by a visit to check and verify for each Hanok houses. Outside shape classification of Hanok were classified as straight, L type, and the interior space was analyzed by focusing on the living room, dining room, kitchen configuration consisting of housing space in public life. This study and the type of Hanok round out the framework from the perspective of residence' demands and realize new Hanok investigated and the evolution of the process is meaningful to find a Hanok.

• The Journal of Information Systems
• /
• v.28 no.4
• /
• pp.155-174
• /
• 2019

Purpose Social interest in financial statement notes has recently increased. However, contrary to the keen interest in financial statement notes, there is no morphological analyzer for accounting terms, which is why researchers are having considerable difficulty in carrying out research. In this study, we build a morphological analyzer for accounting related text mining techniques. This morphological analyzer can handle accounting terms like financial statements and we expect it to serve as a springboard for growth in the text mining research field. Design/methodology/approach In this study, we build customized korean morphological analyzer to extract proper accounting terms. First, we collect Company's Financial Statement notes, financial information data published by KPFIS(Korea Public Finance Information Service), K-IFRS accounting terms data. Second, we cleaning and tokeninzing and removing stopwords. Third, we customize morphological analyzer using n-gram methodology. Findings Existing morphological analyzer cannot extract accounting terms because it split accounting terms to many nouns. In this study, the new customized morphological analyzer can detect more appropriate accounting terms comparing to the existing morphological analyzer. We found that accounting words that were not detected by existing morphological analyzers were detected in new customized morphological analyzers.