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혼인상태별 사망률의 차이를 반영한 생명보험수리 모형의 설계
권혁성,김정은,Kwon, Hyuk Sung,Kim, Jung Eun 한국데이터정보과학회 2013 한국데이터정보과학회지 Vol.24 No.3
현재까지 인간 수명에 영향을 미치는 요소와 해당 요소가 수명에 미치는 영향을 계량적으로 분석하는 연구들이 지속적으로 이루어져 왔고, 그 결과 성별과 연령 이외의 많은 요소들이 실제로 수명에 유의한 영향을 미치는 요인으로 나타났다. 혼인상태는 그러한 요인들 중 하나로, 직접 또는 간접적으로 생존자의 여명에 영향을 끼치는 것으로 인지되고 있다. 이러한 결과는 공적보험과 같은 사회복지 제도와 사보험 영역의 생명보험과 개인연금의 위험관리에 시사점을 제공해 준다. 본 연구에서는 국내의 혼인상태별 사망률 자료를 이용하여 혼인상태의 변화를 반영한 사망률 모형을 설계하고 혼인상태가 보험수리적 계산에 미치는 영향을 파악하고, 그 결과가 나타내는 시사점에 대하여 논의하였다. Various risk factors other than age and sex affecting human mortality have been identified and quantitatively analyzed by previous studies in many area of research. Marital status is one of key mortality risk factors which affect life expectancy directly or indirectly. Relevant results have implication on risk management for both of social and private insurance. In this paper, a mortality model to reflect mortality differential according to marital status and possible transitions among marital status is designed. Various actuarial calculations were performed and related issues were discussed.
Atmospheric Plasma Spray코팅을 이용한 Yttrium계 소재의 내플라즈마성 및 세정 공정에 관한 연구
권혁성,김민중,소종호,신재수,정진욱,맹선정,윤주영,Kwon, Hyuksung,Kim, Minjoong,So, Jongho,Shin, Jae-Soo,Chung, Chin-Wook,Maeng, SeonJeong,Yun, Ju-Young 한국반도체디스플레이기술학회 2022 반도체디스플레이기술학회지 Vol.21 No.3
In this study, the plasma corrosion resistance and the change in the number of contamination particles generated using the plasma etching process and cleaning process of coating parts for semiconductor plasma etching equipment were investigated. As the coating method, atmospheric plasma spray (APS) was used, and the powder materials were Y<sub>2</sub>O<sub>3</sub> and Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> (YAG). There was a clear difference in the densities of the coatings due to the difference in solubility due to the melting point of the powdered material. As a plasma environment, a mixed gas of CF<sub>4</sub>, O<sub>2</sub>, and Ar was used, and the etching process was performed at 200 W for 60 min. After the plasma etching process, a fluorinated film was formed on the surface, and it was confirmed that the plasma resistance was lowered and contaminant particles were generated. We performed a surface cleaning process using piranha solution(H<sub>2</sub>SO<sub>4</sub>(3):H<sub>2</sub>O<sub>2</sub>(1)) to remove the defect-causing surface fluorinated film. APS-Y<sub>2</sub>O<sub>3</sub> and APS-YAG coatings commonly increased the number of defects (pores, cracks) on the coating surface by plasma etching and cleaning processes. As a result, it was confirmed that the generation of contamination particles increased and the breakdown voltage decreased. In particular, in the case of APS-YAG under the same cleaning process conditions, some of the fluorinated film remained and surface defects increased, which accelerated the increase in the number of contamination particles after cleaning. These results suggest that contaminating particles and the breakdown voltage that causes defects in semiconductor devices can be controlled through the optimization of the APS coating process and cleaning process.
권혁성 한국미학회 2022 美學 Vol.88 No.2
The present paper is a reconsideration of Aristotle’s Catharsis. For this task it is above all needed to reconsider thoroughly the passage in the Politics about the musical Catharsis; for this passage has been often misunderstood. As the result of this reconsideration it is revealed that the view this passage represents about the Catharsis can be as a whole accepted for the interpretation of tragic Catharsis on the basis of the Poetics. In consequence the tragic Catharsis can be interpreted as follows: It is such a function of the tragedy that by arousing pity and fear intensely in the mind of the spectator through its plot understood by him, the tragedy makes him feel such emotions, without vagueness that they would have more or less in real life, in refined form. The Catharsis as the tragedy’s function that consists of this refined emotional experience is not in itself anything that forms moral virtue, but can contribute to this cultivation. On the other hand, it brings the spectator’s mind to pleasurable relief by its termination, because this emotional experience as intense also is, when terminated, subsiding. 본고는 아리스토텔레스의 카타르시스를 재고하는 작업이다. 이를 위해 종래에 빈번히 잘못 이해되어 온 음악의 카타르시스에 대한 『정치학』 구절이 면밀히 재고되어야 한다. 이 재고에 따르면, 이 구절이 카타르시스에 대해 대변하는 견해는 그것 전체가 『시학』에 따라 비극의 카타르시스에 대한 해석에 수용될 수 있다. 그 결과, 비극의 카타르시스는 다음과 같이 해석될 수 있다. 그것은 비극이 플롯에 의해 이를 이해하는 관객의 마음에 연민과 공포를 강렬하게 환기함으로써, 관객으로 하여금 이러한 감정들을, 현실에서라면 그것들이 다소간 가졌을 수 있는 혼연함 없이, 정련된 상태로 느끼게 하는 것이다. 카타르시스는 이러한 정련된 감정 경험으로 이루어지는 것으로서 그 자체가 덕성을 형성하는 것은 아니지만 이에 기여할 수 있다. 다른 한편으로 카타르시스는 그것의 종료에 의해, 이 감정 경험이 또한 강렬한 것으로서 종료되면 가라앉기에, 관객의 마음에 즐거운 경감을 가져다준다.
권혁성,김영서,이종민,고성호,김현영,김철호,이승훈,정근화,김영대,권형민,김범준,김정민,김범준,허성혁,장대일 대한신경과학회 2020 Journal of Clinical Neurology Vol.16 No.4
Background and Purpose The incidence of ischemic stroke (IS) in young adults is increasing, and the associated large socioeconomic impact makes understanding IS in young adults important. We investigated the causes of and risk factors for IS in young adults, and their impact on outcomes. Methods The Stroke in Korean Young Adults (SKY) study is a standardized multicenter prospective study involving eight medical centers of the Republic of Korea. First-ever IS patients aged 18 years to 44 years were prospectively included in this study within 7 days of stroke onset. Their outcomes at 3 months were analyzed. Results This study enrolled 270 patients from April 2014 to December 2018, most (67.8%) of whom were male. About 41.5% of the patients had one or more vascular risk factors from among hypertension, diabetes mellitus, and dyslipidemia. However, only half of them had received regular treatment. Arterial dissection was more common in males, and systemic lupus erythematosus (SLE) and Moyamoya disease were more common in females. The outcome was favorable (modified Rankin Scale score of 0 or 1) in 81.9% of the patients at 3 months after stroke onset. More severe initial symptoms, higher initial glucose level, and SLE as a comorbidity were associated with unfavorable outcomes. Conclusions Young adult IS patients in Korea exhibit low awareness and poor management of their risk factors. Although the short-term outcome was relatively favorable in those patients, having SLE was associated with unfavorable outcomes. More attention needs to be paid for improving awareness and controlling risk factors in this population.