• Journal of National Security and Military Science
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• s.4
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• pp.211-240
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• 2006

King Taejo, Wang Gun had succeeded in bringing order out of chaos of the Later Three Kingdoms and establishing a new unified dynasty, Koryo. Why can he gain the victory against the king of Later Baekje, GyunHwon? What is the his leadership? These are his leadership. (1) He had the peserverance. in 927 Wang Gun had broken by Gyun Hwon's army at Gong San. Nevertheless He didn't dissapoint and trained troops for battle steadily. Therefore in 930 he gained a great victory against Gyun Hwon at An Dong. (2) He use the command rights justically. (3)His soldiers are obedient to his orders involuntarily. (4) He always cooperateed with other’s commanders. (5)He efforted to gain victory without battle. (6)He had a high and great plan. (7) He took advantage of land configuration. (8) He made the enemy to fall into internal disarray. With these leadership, Wang Gun unified Later Three Kingdoms. Regarding himself as the success or to Goguryo, he pursued a policy of expansion to the north. Therefore he extended his borders to Chongchon River. At the same time he broke the chains of the bone-rank system which had shackled Shil1a's society.

• Corrosion Science and Technology
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• v.12 no.1
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• pp.1-6
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• 2013

Recently Digital TV industry has drastically been moving the illuminating system, which causes an obvious product change from PDP and LCD to LED model to provide high-definition image. Due to strong competition in the digital industry, TV manufacturers make a great efforts to reduce production cost by using low-priced materials such as steels instead of aluminum and plastic etc. In this paper we have developed a new low-priced electrogalvanized steel sheet, which has a black resin composite layer, to substitute conventional high-priced PCM steel and plastic mold for rear cover panel in the digital TV. The black resin composite was prepared by mechanical dispersion of the mixture solution that consists of high solid polyester resin, melamine hardener, black pigment, micronized silica paste, polyacrylate texturing particle and miscellaneous additives. The composite solution was coated on the steel sheet using roll coater followed by induction furnace curing and cooling. Although the coated layer has a half thickness compared to the conventional PCM steels having $23{\mu}m$ thickness, it exhibits excellent quality for the usage of rear cover panel. The new steel sheet was applied to test products to get quality certification from worldwide electronic appliance customers. Detailed discussion provides in this paper including preparation of composite solution, roll coating technology, induction curing technology and quality evaluation from customers.

• Journal of Acupuncture Research
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• v.29 no.3
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• pp.101-113
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• 2012

Objectives : The purpose of this study is to investigate the effects of Samgi-Halleak pharmacopuncture treatment on insomnia and fatigue. Methods : This study was done with 47 nurses under shiftwork schedule. Subjects were divided into two groups ; Samgi-Halleak pharmacopuncture treated group(experimental group, N=24), normal saline treated group(control group, N=23). The procedures had been conducted to the subjects injecting 0.1~0.2mL total 1mL, 0.5~1cm deep on each acupoint 2 times per week. The acupoints were Pungji($GB_{20}$), Gyeonjeong($GB_{21}$), Sinsu($BL_{23}$). Both of groups were treated total 8 times, but control group was treated additional pharmacopuncture the same way as experimental group after 8 times normal saline treatment. The collected data were analyzed with insomnia and fatigue at baseline and post pharmacopuncture using independent samples t-test, Paired t-test, ${\chi}^2$-test by SPSS 18.0 Windows program. Results : After 8 times treatment, the scores of both groups showed significant improvement in insomnia and fatigue. Comparing the experimental and control group, there were more significant improvement in experimental group than control group in the scores of insomnia and fatigue. Conclusions : Samgi-Halleak pharmacopuncture can be used for effective treatment in patients with insomnia and fatigue.