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Financial Intermediation and the Post-Crisis Financial System with Implications for Korea
신현송 한국개발연구원 2010 KDI Journal of Economic Policy (KDI JEP) Vol.32 No.1
Securitization was meant to disperse credit risk to those who were better able to bear it. In practice, securitization appears to have concentrated the risks in the financial intermediary sector itself. This paper outlines an accounting framework for the financial system for assessing the impact of securitization on financial stability. If securitization leads to the lengthening of intermediation chains, then risks become concentrated in the intermediary sector with damaging consequences for financial stability. Covered bonds are one form of securitization that do not fall foul of this principle. I discuss the role of countercyclial capital requirements and the Spanish-style statistical provisioning in mitigating the harmful effects of lengthening intermediation chains. For Korea, the stability of funding emerges as a key consideration. Covered bonds may play a role in stabilizing the funding arrangement for banks.
코일색전술을 시행받은 비파열성 뇌동맥류 환자의 자기효능감과 자가간호행위
신현송,김정혜 대한임상건강증진학회 2023 Korean Journal of Health Promotion Vol.23 No.2
Background: This study aimed to identify the self-efficacy and self-care behaviors in patients with an unruptured intracranial aneurysm who have undergone coil embolization. Methods: A cross-sectional study was conducted to 143 patients who were diagnosed with unruptured intracranial aneurysm and visited the outpatient department of radiology for follow-up management after performing coil embolization at a tertiary hospital, Seoul. The self-efficacy and self-care behaviors were measured using self-reported questionnaire. The collected data were analyzed with independent t-test, one-way analysis of variance, Pearson's correlation using the SPSS/win 26.0 statistical programs (IBM Corp, Armonk, NY, USA). Results: The mean score of self-efficacy in patients with an unruptured intracranial aneurysm was 3.49±0.55 out of 5. The mean score of self-care behaviors was 3.69±0.66 out of 5. The self-efficacy exhibited statistically significant differences depending on the size and number of the cerebral aneurysms and the presence of such aneurysms remaining after treatment. There was a positive correlation between self-efficacy and self-care behaviors (r=0.37, P=0.001). Regression analysis revealed that the patient's self-care behaviors of the patients was explained by self-efficacy (β=0.37, P<0.001) and these variables explained 13.3% of the variance in self-care behaviors (F=22.86, P<0.001). Conclusions: In order to increase self-care behaviors, it is necessary to develop self-efficacy interventions so that an unruptured intracranial aneurysm who have undergone coil embolization can effectively cope with various difficulties during treatment course 연구배경: 본 연구는 코일색전술을 시행받은 비파열성 뇌동맥류 환자의 자기효능감과 자가간호행위의 정도를 확인하고 자가간호행위에 미치는 영향요인을 규명하여 뇌동맥류 환자의 자가간호행위를 증진을 위한 간호중재를 개발하는데 근거 자료로 제공하고자 하였다. 방법: 서울시 일 상급종합병원 비파열성 뇌동맥류를 진단받고 코일색전술을 시행한 후 경과 관찰 중인 환자 143명을대상으로 자기효능감과 자가간호행위를 조사하였다. 결과: 대상자의 자기효능감은 평균 3.49±0.55점(5점 만점) 이었고, 자가간호행위는 평균 3.69±0.66점(5점 만점)이었다. 자기효능감이 높을수록 자가간호행위를 잘 하는 것으로 나타났다(r=0.37, P=0.001). 자가간호행위에 미치는 영향요인은 자기효능감으로 나타났으며 설명력은 13.3%였다(F=22.86, P<0.001). 결론: 비파열성 뇌동맥류 환자의 자가간호행위 증진을 위해서는 자기효능감을 높이는 중재가 필요함을 확인할 수 있었다.
Positive Feedback Trading Under Stress: Evidence from the US Treasury Securities Market
Benjamin H. Cohen,신현송 연세대학교 동서문제연구원 2013 Global economic review Vol.42 No.4
A vector autoregression (VAR) is estimated on tick-by-tick data for quote-changes and signed trades of 2-year, 5-year and 10-year on-the-run US Treasury notes. Confirming the results found by Hasbrouck and others for the stock market, signed order flow tends to exert a strong effect on prices. More interestingly, however, there is often a strong effect in the opposite direction, particularly at times of volatile trading. Price declines elicit sales and price increases elicit purchases. An examination of tick-by-tick trading on an especially volatile day confirms this finding. At least in the US Treasury market, trades and price movements appear likely to exhibit positive feedback at short horizons, particularly during periods of market stress. This suggests that the standard analytical approach to the microstructure of financial markets, which focuses on the ways in which the information possessed by informed traders becomes incorporated into market prices through order flow, should be complemented by an account of how price changes affect trading decisions.