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An Assessment of Structural Reforms in Korea: Implications for Economic Revival in Japan
Jongkyu Park,Yoon Je Cho 서울대학교 경제연구소 2003 Seoul journal of economics Vol.16 No.2
Prior to the economic crisis, realestate prices, wage rates, interest rates, and the exchange rate had been derailed on a large scale from the levels reflective of Korea's economic fundamentals, This distortion was the ultimate source of Korea's economic crisis but was remedied only partially during the last five years, leaving the task of economic reform as incomplete. Although a consensus view about the fundamental source of Japan's economic problems has not yet emerged, a chronology of Japan's lost decade casts doubts about the popular view that financial reform is the sufficient condition for a durable recovery in Japan, We suggest that Japan's effort should be directed to improving productivity of nontradable service sector and to solving the problem of population aging.
Anti-doping education and dietary supplementation practice in Korean elite university athletes
Jongkyu Kim,Namju Lee,Eung-Joon Kim,Sun-kyung Ki,Jaeryang Yoon,Mi-sook Lee 한국영양학회 2011 Nutrition Research and Practice Vol.5 No.4
This study was conducted to investigate relationships and gender differences in dietary supplement (DS) and oriental supplement (OS) prevalence as well as anti-doping awareness during training and the game period. Korea National Sport University athletes (343 male and 136 female) participated in this study and completed DS and OS practice and anti-doping awareness questionnaires. Forty-six percent of athletes used DS during the training period, and there was significantly higher DS use in females (53%) compared to males (43%) (P < 0.05). Twenty-eight percent of athletes used OS, and there was significantly higher OS use in females (35%) than males (26%) (P < 0.05) during the training period. The primary reason of DS use was to supply energy both in males (36%) and females (28%). The main reason for male athletes' OS use was to supply energy (41%). Meanwhile, the reasons for female athletes' OS use were to supply energy (23%), to maintain health (19%), and to improve recovery ability (20%), which showed a significant gender difference (P < 0.05). Athletes rated their perceived degree of satisfaction, perceived importance, and beliefs in efficacy of DS and OS use all over 50% during the training period, and no gender differences were detected. In a comparison between athletes educated about anti-doping (at least more than one time) and non-received athletes, DS and OS use during the training period was 2.30 (1.47-3.60) and 1.71 (1.03-2.82), respectively. DS and OS use immediately before the game period was 2.38 (1.50-3.80) and 3.99 (1.20-13.28), respectively. Elite athletes' anti-doping education was highly related to increased DS use during the training period and immediately before the game. Although elite athletes use various DS and OS during the training period and before the game period, doping education for elite athletes is related with DS and OS use during the training period and before the game.
Simulation Study of the Disruption Load in KSTAR Device with a Modified Passive Stabilizer
Jongkyu Lee,J. Y. Kim 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.64 No.3
The structure of the passive stabilizer system in KSTAR (Korea Superconducting Tokamak AdvancedResearch) device was recently modified mainly in relation to the upgrade of the verticalposition control system. Corresponding to this design change in one of the plasma facing components,a simulation study was performed to see how the disruption load and the characteristicsvaried. During the vertical drift phase, the vertical growth rate is shown to be increased by about8 times while the vertical force on the passive stabilizer is reduced by about 5 times for the newpassive stabilizer compared with the old one. Meanwhile, during the thermal and current quenchphase, relatively small differences were observed in the disruption load and characteristics betweenthe two models.
The petrology of a gabbroic inclusion from Dokdo Island
Jongkyu Park,Yun-Deuk Jang 대한지질학회 2021 대한지질학회 학술대회 Vol.2021 No.10
How much magmatic information on plutonism and associated volcanism can be extracted from a small plutonic inclusion? In this case study, we used a gabbroic inclusion (i.e., phlogopite-bearing orthocumulate) from Dokdo Island, located at the central-western part of the East Sea back-arc basin. Whole-rock compositions suggest that the orthocumulate has been fractionated from an alkaline OIB-type magma sharing a common parent with the volcanism of this island. The textural and chemical characteristics of the orthocumulate minerals indicate that the gabbroic magma has evolved through a monotonous and dominant fractional crystallization of Ti-rich clinopyroxene ± phlogopite. Using mineral-melt equilibrium, clinopyroxene-based thermobarometers, and hygrometers, we estimated a plumbing condition of mafic alkaline magma of Dokdo Island: An intermediately evolved (i.e., Mg# = ~50) hydrous (~1.64 wt% H₂O) alkaline basaltic magma of ~1150 ±27℃ at ~1.53 ±2.6 kbar. In addition, a comparison of the basaltic plumbing systems of the adjacent Neogene volcanic islands highlights a discrepancy in storage depth, which alludes to the role of inherited crustal structures during their ascent.