http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
한국, 미국, 일본과 아시아 금융위기 국가의 주식시장간 조건부상관관계 추정과 정보확산속도에 관한 연구
이상빈(Sang Bin Lee),서정훈(Jeong Hun Seo) 한국경영학회 2009 經營學硏究 Vol.38 No.3
As the financial markets of emerging nations have become internationalized and integrated nowadays, much prior research shows that co-movements between the international stock markets have sharply increased, especially during financial crises such as Black Monday. This suggests that the analysis of the time-varying conditional correlation is important. The timevarying conditional correlation depends on both the degree of connection between nations and composition of optimal portfolios for asset allocation and risk management. In order to show how the co-movements between financial markets have been during the financial crises, we have investigated dynamic conditional correlation for stock returns of sample nations during the Asian crisis period and IT bubble crisis. We also examine the contagion effect and the relationship between the information diffusion speed and the contagion effect. The analysis period for the paper is from January 1990 to December 2007. The sample data include Korea, three Southeast Asian nations (Thailand, Indonesia, and Malaysia) which have experienced the Asian financial crisis, the U.S., and Japanese stock markets, which can be considered advanced stock markets. We estimate dynamic conditional correlation between sample nations. We also use an estimator, which is calculated through the Fisher transformation, in order to analyze the contagion effect. Also, we test information diffusion speed by the autoregressive structure of timevarying volatility of the GARCH model. Finally, we test the robustness of the contagion effect using weekly stock returns as well as daily stock returns, and analyze whether or not the increase in volatility during the crisis period affects the contagion effect beyond the information diffusion speed. Empirical results can be summarized as follows. First, the estimation of the dynamic conditional correlations between sample nations satisfies the necessary conditions of a model estimator. Furthermore, the conditional correlation is time-varying as time passes. Second, the contagion effect among Korea and Southeast Asia (Thailand, Indonesia, and Malaysia) is significant but not between these nations and the U.S. This result implies that the Asian nations are strongly connected with the U.S. economy during the Asian financial crisis. Third, we have investigated how the information diffusion speed has impacted on the contagion effect. The information diffusion speed of the three Southeast Asian nations is faster than Korea and Japan during the Asia crisis period. This indicates that the information diffusion speed depends on the relative size of the economy. To check whether the results are robust across the frequency of the data set, we use the weekly stock returns beyond the daily stock returns. The estimation results of the weekly data are slightly different from the previous results of the daily data. This may suggest that when non-synchronicity of trading and the institutional differences of stock markets are significant, the use of unsuitable data sets for analysis may not guarantee reliability for risk management and international portfolio management in which the dynamic conditional correlation plays an important role.
노인 입원 환자의 섬망 예방을 위한 비약물 중재에 대한 체계적 문헌고찰
유상빈(You, Sang Bin),이주희(Lee, Ju Hee) 기본간호학회 2021 기본간호학회지 Vol.28 No.2
Purpose: The study was aimed to examine components and provider’s characteristics of non-pharmacological intervention that affect delirium prevention in elderly inpatients. Additional effects on delirium prevention based on identified characteristics were explored. Methods: Studies were searched by using seven electronic databases and examined through Preferred Reporting Items Systematic Review and Meta-Analysis (PRISMA) flow diagram. The Risk of Bias (ROB) and the Risk of Bias Assessment tool for Non-randomized Study (RoBANS) were used to evaluate the quality of each included study. Results: Seven studies were selected for the systematic review. Most of the selected studies had a low risk of bias. Interventions of each study and delirium outcome were heterogeneous. Each multi-component non-pharmacological intervention consisted on average of five interventions. Giving orientation and promoting early mobilization were included in every study. Interventions that included giving orientation, promoting early mobilization, and supporting nutrition significantly decreased delirium incidence. Moreover, when health care providers who have an intimate relationship with patients provided non-pharmacological interventions, delirium incidence has significantly decreased. Conclusion: Non-pharmacological intervention, such as giving orientation, promoting early mobilization, should be included to prevent delirium for elderly inpatients. It is important to include healthcare providers who have an intimate relationship or regular contact with patients in order to decrease delirium incidence.
용무도 복합운동이 청소년의 비만 수준별 혈관탄성, 혈중지질 및 아디포넥틴에 미치는 영향
이상빈 ( Sang Bin Lee ),장창현 ( Chang Hyun Jang ) 한국운동생리학회 2015 운동과학 Vol.24 No.4
PURPOSE: The purpose of this study was to investigated of Yong Moo Do combined exercise (kick, punch, press, throw, and choke) affect vascular compliance, blood lipid and adiponectin in adolescent. METHODS: 3 groups (27 high school students) participated in experiment as follows: subjects who have normal weight and non-exercise (Control group, NC: n=8), who have normal weight and Yong Moo Do combined exercise(NE: n=10), who have obese weight and Yong Moo Do combined exercise(OE: n=9), Yong Moo Do combined exercise was composed of one hour per time, 3 times per week during 12 weeks. All data were analyzed Two-way repeated ANOVA. RESULTS: Body composition (%BF, BMI and WHR) significantly higher OE than NE and NC (p<.05). %BF and WHR significantly decreased in NE and OE after 12 weeks exercise (p<.05). Right Hand, Left Hand, Right Foot, and Left Foot significantly increased in NE and OE after 12 week exercise (p<.001). LDL-C significantly decreased in NE and OE after 12 week exercise (p<.001), and HDL-C significantly increased in NE and OE (p<.001). Adiponectin, significantly increased at 12 weeks NE and OE after exercise (p<.001). CONCLUSIONS: These findings suggest that Yong Moo Do combined exercise might result positive effect for vascular compliance, blood lipid profiles and adiponectin in obese high school students.
이상빈(Sang-Bin Lee) 한국콘텐츠학회 2009 한국콘텐츠학회논문지 Vol.9 No.1
본 연구는 온열요법, 그 중 습열(moist heat)과 건열(dry heat)의 적용이 면역 활성의 변동에 미치는 효과를 알아보기 위한 것이다. 건강에 이상이 없는 연령 23~32세, 신장 171.0±1.2㎝, 체중 68.0±2.2㎏의 남성 15명과 연령 22~24세, 신장 159.5±1.2㎝, 체중 54.6±2.4㎏의 여성 15명을 대상으로 인체에 온열침수(핫팩(KRS 12P, Karis Co., Korea))와 적외선 (발광 적외선등(Infrared, Ilshin Co., Korea))을 적용하여 보체와 같은 면역-활성 물질의 추이를 살펴보았다. 연구의 결과로써, 온열침수와 적외선을 적용한 결과 온열침수와 적외선 적용으로 보체 성분의 변동은 온열침수 적용으로 C1q의 유의한 감소와 C3(여성의 경우) 및 C4의 감소가 나타남을 확인할 수 있었다. 그러나 적외선의 경우 C1q와 C3 및 C4의 증감에 별다른 영향을 미치지 못하였다. 이러한 연구의 결과로 미루어 온열침수의 적용으로 보체계의 활성을 확인할 수 있었으며 이러한 면역-활성의 증가는 선택적 경로(alternative pathway)가 아닌 고전적 경로(classical pathway)를 통해 이루어짐을 추정할 수 있었다. 따라서 본 연구의 결과는 극히 부분적 결과를 나타내지만, 온열침수와 적외선 적용으로 면역-증강효과가 다소 존재하는 것으로 사료된다. The purpose of this study was to demonstrate immune-activities by heat therapy. To exam, furthermore, the immune effect is investigated from the healthy volunteer(male:15, female:15) by monitoring changes of immune substances such as complements(C1q, C3, and C4), a comparative study with warm water immersion(40.8±0.3℃) and infrared(250W) was carried out. The plasma analysis showed that the percentage of C1q, C3, and C4 was decreased in warm water immersion-stimulated group, but not in infrared-applied group, compared with control group from healthy volunteer. Therefore, these results suggest that the thermo-stimulation improved immune activity and inhibited complement-related inflammation through the warm water immersion-dependent classical pathway.