• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2002.05a
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• pp.157-157
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• 2002

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2007.11a
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• pp.130-135
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• 2007

• Information Systems Review
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• v.1 no.2
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• pp.123-136
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• 1999

• Proceedings of the KSR Conference
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• 2006.05b
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• pp.619-629
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• 2006

• Proceedings of the KSR Conference
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• 2006.05b
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• pp.594-604
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• 2006

• Proceedings of the Korean Magnestics Society Conference
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• 2008.12a
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• pp.13.2-13.2
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• 2008

• Proceedings of the KSR Conference
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• 2004.10a
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• pp.1034-1039
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• 2004

The major objective of this study is to investigate the effects and application of reinforcement for steel plate girder railway bridge by the external prestressing method. It analyzed the mechanical behaviors of non-ballasted railway bridge with ballast reinforced and external post-tensioning reinforced on the finite clement analysis for the static and dynamic behavior. As a result, the reinforcement of ballasted railway bridge the external prestressing method are obviously effective for the additional dead force which is ballast. The analytical study are carried out to investigate the post-tension force decrease bending behavior and deflection in composite bridge for serviceability. To develop two type FEM model which reflect well the post-tension force transverse distribution behavior of servicing bridge. With the comparing the results of railway bridge with ballast which carried out before the post-tensioning with the results of railway bridge with ballast which carried out after post-tensioning, It is investigated that the additional dead load decrease effect and bending behavior of servicing bridge is effect by the post-tensioning. The reinforcement by using the external tendon can be reducing that structure of a degradation phenomenon by unusual stresses due to additional dead load and other problems.

• Journal of architectural history
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• v.28 no.2
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• pp.7-18
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• 2019

The Chosun Dynasty established and implemented measures to prevent Japanese invasion into the southern coast. To this end, the number of naval vessels and the number of ships were increased, and a shipyard(船所) was constructed to protect the safety of the vessels. The shipyard is a port facility where military vessels are anchored and repaired, as well as public facilities that are needed for military training on public and land, as well as facilities for storing supplies and equipment needed for ships on land and defense at the port entrance. Despite being such an important facility for national defense, Shipyard has not been noticed. Studies have shown that the position of shipyard is divided into the riverside type and the riverbank type, which is due to the topographical features of Korea. The repair cycle of naval vessels, the carrying out of Yeonhun(prevent the water from decaying the part of the ship, a raw tree was burned to smoke) and the place of sea training also affected the construction of the Gul River(掘江). The space structure of shipyard is divided into port entry facilities for monitoring and controlling at the entrance to the harbor, border facilities for folding and repairing military vessels, and land facilities for holding land exercises and administrative work of military vessels and military equipment.

• Microbiology and Biotechnology Letters
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• v.47 no.3
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• pp.343-349
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• 2019

Gul jeotgals (GJs) were prepared using solar salt aged for 3 years. One sample was fermented using starters, such as Bacillus subtilis JS2 and Tetragenococcus halophilus BS2-36 (each $10^6CFU/g$), and another sample was fermented without starters for 49 days at $10^{\circ}C$. Initial counts of bacilli and lactic acid bacteria (LAB) in non-starter GJ were found to be $3.20{\times}10^2$ and $7.67{\times}10^1CFU/g$ on day 0, and increased to $1.37{\times}10^3$ and $1.64{\times}10^6CFU/g$ on day 49. Those of starter GJ were found to be $2.10{\times}10^5$ and $3.30{\times}10^7CFU/g$ on day 49, indicating the growth of starters. The pH values of GJ were $5.93{\pm}0.01$ (non-starter) and $5.92{\pm}0.01$ (starter) on day 0 and decreased to $5.78{\pm}0.01$ (non-starter) and $5.75{\pm}0.01$ (starter) on day 49. Amino-type nitrogen (ANN) production increased continuously during fermentation, and $407.19{\pm}15.85$ (non-starter) and $398.04{\pm}13.73$ (starter) mg% on day 49. Clone libraries of 16S rRNA genes were constructed from total DNA extracted from non-starter GJ on days 7, 21, and 42. Nucleotide sequences of Escherichia coli transformants harboring recombinant pGEM-T easy plasmid containing 16S rRNA gene inserts from different bacterial species were analyzed using BLAST. Uncultured bacterium was the most dominant group and Gram - bacteria such as Acidovorax sp., Afipia sp., and Variovorax sp. were the second dominant group. Bacillus amyloliquefaciens (day 7), Bacillus velezensis (day 21 and 42), and Bacillus subtilis (day 42) were observed, but no lactic acid bacteria were detected. Acidovorax and Variovorax species might play some role in GJ fermentation. Further studies on these bacteria are necessary.

• Journal of Korean Historical Folklife
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• no.28
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• pp.113-142
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• 2008

The purpose of this script is to understand general issues related to production of visionary drawing and correct the fault of previous research by examining the data on visionary drawing featured on Ok So Kwon-Seop's anthology, "Oksogo(玉所稿)" the summary of its contents are as follows. First by analyzing the status of visionary drawings, in among "Oksogo(玉所稿)" which is Ok So's manuscript collection, there are 56 pieces in Je Chun Bon (edition) and 47 in Moon Kyoung Bon(edition). And recorded dreams in visionary drawings are centralized when Ok So was in his late 50's to 70's. And it is estimated that the visionary drawings are the collection of work done by many artists in long period of time. It was confirmed that Kwon Seop himself did not participated in drawings but were done by his brother Kwon Young, his grandson Kwon Shin Eung and Cho Se Gul, the artist from Pyoung Yang. Also visionary drawings were produced in youth years and among the visionary drawings that can be ascertain about the produced year and the oldest is by Cho Se Gul which was estimated to be done in 1695. And the last one to be completed was which was a dream in 1756 turned into a drawing and this was produced between 1756 to 1759 which was a year Ok So passed away. Production of Ki Seung Chup (album) or Mong-Wha Chup (album) was accomplished as follows. When Ok So records his dream in writing he receives response poem from a person he was in dream with and ask artist to draw the vision in dream, then the drawing and scripts were compiled and made into an album. With this some of the issues on visionary drawings featured on "Oksogo(玉所稿)" would have been settled. Recently, 2 more volumes of Ok So's anthology were photo-printed and published and hopefully those issues that was unable to settle in this script will have more detailed answers by discovering new and undisclosed data.