한미일 주가지수선물자료를 이용한 국제자본시장들간의 情報移轉效果에 관한 實證的 硏究

김찬웅,문규현,홍정효 한국증권학회 2002 Asia-Pacific Journal of Financial Studies Vol.31 No.1

S&P500지수선물 낮수익률은 KOSPI200지수선물 밤수익률에 대해서만 통계적으로 유의한 영향력을 미치고 있는 것으로 나타났다. 이러한 분석결과로부터 한국선물시장은 미국선물시장에 발생한 정보에 대하여 효율적(efficient)으로 반응하고 있다는 증거를 발견할 수 있다. 또한 IMF 외환위기 이전보다는 IMF 외환위기 이후 한국선물시장에 대한 미국선물시장의 영향력이 증대하고 있음을 추론해 볼 수 있다. 이러한 결과는 주가지수현물의 일별종가수익률 자료를 사용한 장국현(2001), 김인무, 김찬웅(2001)의 연구결과와 상반됨을 보여주고 있다. 따라서 주가지수현물은 지수에 포함된 개별 주식들의 비동시거래효과(non- synchronous trading effect)가 발생할 수 있고 또한 배당금 및 매도매수스프레드를 제대로 반영하지 못한다는 사실을 감안하면 주가지수선물을 통한 국제자본시장들간의 정보이전효과분석이 더 타당할 것임을 추론 해 볼 수 있다.나. NIKKEI225지수선물 낮수익률의 KOSPI200지수선물 밤수익률 및 낮수익률에 대한 조건부평균 및 변동성이전효과 분석결과

저혈압을 동반한 골반골 골절 환자의 치료

김찬웅,정구영,유지영,유진현 대한외상학회 1999 大韓外傷學會誌 Vol.12 No.2

Background : Although pelvic fracture hemorrhage is contributor to shock, a common dilemma in the management of hemodynamically unstable pelvic fractures is the timing of the operation after recognition that the shock origin is either the intraperitoneal cavity or the pelvic cavity. Methods : We reviewed 41 consecutive patients with pelvic fractures with hypotension who were admitted to our emergency department from March 1994 to February 1998. Results: Thirty-one(31) patients of the 41 patients sustained systolic blood pressures below 90mmHg, regardless of massive fluid resuscitation, and mortality was high. However when we compared the actual survival rate with the expected survival rate, the surgical treatment decision was delayed. So it means delayed surgical decisions were responsible for the increased mortality. Conclusions : To decrease pelvic bone fracture mortality, we must detect causes of bleeding other than pelvic hemorrhage during the early emergency department period. Also, surgical bleeding control can be considered constructively in sustained hemodynamically unstable patients.

Burnout and Resilience among Emergency Physicians at Korean University Hospitals during the COVID-19 Pandemic: A Cross-Sectional Analysis

김찬웅,박경혜,어은경,김영민,어수경,한재훈 연세대학교의과대학 2022 Yonsei medical journal Vol.63 No.4

Purpose: This study aimed to investigate burnout and resilience among emergency physicians (EPs) at university teaching hospitalsduring the coronavirus disease (COVID-19) pandemic. Materials and Methods: In April to May 2021, a survey was administered to 331 and 309 emergency medicine specialists and residents,respectively, from 31 university teaching hospitals in Korea. Data on the respondents’ age, sex, designation, working area,experience with treating COVID-19 patients, and personal experience with COVID-19 were collected. Based on the participants’characteristics, quality of life (compassion satisfaction, burnout, and secondary traumatic stress), resilience, emotional content,and self-image were analyzed. Results: A total of 247 responses were analyzed. Compared to specialists, compassion satisfaction and resilience in residents werenot good, burnout was severe, and emotional content and self-image were less positive. Experiences with treating COVID-19 patientsdid not cause any difference in quality of life, resilience, emotional content, and self-image among participant subgroups. Personal COVID-19 experiences were associated with poor compassion satisfaction, resilience, less positive emotional content andself-image, and severe burnout. Compassion satisfaction, secondary traumatic stress, and resilience can definitively affect burnout. Conclusion: The quality of life and resilience of EPs in university teaching hospitals in Korea during the COVID-19 pandemic havebeen low. Supportive measures to improve resilience can prevent burnout among emergency staff, particularly residents and EPs,with personal experiences related to COVID-19.

보건의료 영역에서 시뮬레이션 활용의 경향

김찬웅 한국간호교육학회 2011 한국간호교육학회 학술대회 Vol.2011 No.5

초등 교과에 아두이노 장치를 이용한 피지컬 컴퓨팅 교육 적용방안 연구

김찬웅,허경 경인교육대학교 교육연구원 2017 교육논총 Vol.37 No.1

본 연구는 국내외 선행 연구 분석을 통해 정보과학 교육의 필요성을 확인하고 정보과학 교육과정 운영의 어려움으로 지적되는 여러 가지 제한 요소에 대한 해결책으로 정규 교과에서 피지컬 컴퓨 팅을 교육하는 방법을 제안하였다. 본 연구에서는 피지컬 컴퓨팅 기반 정보과학 단원을 경기도 소 재 초등학교 1개 학급에 적용한 후, 학생들의 학습 성취도와 학습 흥미도의 차이를 검증하기 위하 여 GALT 논리적 사고력을 이용한 사전 검사와 자체 개발한 학습 성취도와 학습 흥미도 검사를 실 시하고 실험학급과 통제학급의 차이를 독립표본 t검증을 통해 검증하였다.

지하철역에서 발생한 외상의 유형에 대한 분석

김찬웅 대한응급의학회 2005 大韓應急醫學會誌 Vol.16 No.3

우리나라 해양보호구역제도의 현황 및 개선방향

김찬웅,박수진,최석문,김대경 해양환경안전학회 2019 해양환경안전학회 학술발표대회 논문집 Vol.2019 No.11

흉골 골절 환자에서 심혈관계 동반 손상의 예측 인자와 응급 심장 초음파의 적응증

김찬웅,류지영,전영진 梨花女子大學校 醫科大學 醫科學硏究所 2001 EMJ (Ewha medical journal) Vol.24 No.1

Objective : To determine the predicting factors related to cardiovascular injuries and To suggest a clinical indication for emergency echocardiography in sternal fractures. Materials and Results : A total mumber of 40 patients with sternal fractures a over 5-year period were retrospectively assessed on clinical, echocardiographic and biochemical status. We analyzed the following 4 factors as predicting factors for cardiovascular injuries in sternal fractures : 1) presence of restraint, 2) presence of associated injuries, 3) presence of a past medical history involving cardiovascular system, 4) Revised Trauma Score(RTS). We, also, assessed the utility of conventional diagnostic methods for cardiovascular injuries, such as ECG, chest X-ray, and enzyme levels. Based on the methods, we tried to infer an indication for emergency echocardiography in sternal fractures. Results : The presence of a past medical history involving cardiovascular system and abnormal RTS on admission were significant predicting factors. Emergency echocardiography was performed according to the predicting factors and the results from conventional evaluations. These data can suggest that indications for emergency echocardiography in sternal fractures include as 1) if more than two studies reveal abnormality without any significant predicting factors. 2) if more than one study reveal abnormality with any significant predicting factors. Conclusion : The past medical history involving cardiovascular system and initial vital signs imply the presence of associated cardiovascular injuries in sternal fractures. And if possible, emergency echocardiography is recommended.

경도의 두부 외상 환자에서 S-100B 단백질의 진단적 유용성

김찬웅,김혜련,이미경 대한응급의학회 2006 大韓應急醫學會誌 Vol.17 No.6

Purpose: Ninety percent of patients with minor head injury(MHI) who undergo computed tomography (CCT) under current clinical decision rules have normal scans. Serum concentrations of astroglial protein S-100B were recently found to provide useful information in such cases, but there is no clinical data in this country. We have investigated whether S-100B concentrations in alert patients with MHI can serve as an indicator of the need for an initial CCT scan. Methods: 40 patients with MHI and a control group of 54 healthy volunteers were enrolled in this prospective study. All patients with MHI had a CCT scan to confirm diagnosis, and blood was drawn from all study participants in order to measure S-100B concentrations. Data were analyzed using contingency table and a receiver operating characteristic (ROC) curve to determine the diagnostic value of S-100B. Results: Using a concentration cutoff of 0.12 g/L, patients with abnormal CCT findings were identified by S-100B measurement with a sensitivity level of 100% and a specificity level of 46%. S-100B concentrations for head injury patients with multiple trauma were increased more than for patients without combined injuries. Conclusion: Adding measurement of S-100B concentration to the clinical decision rules for a CCT scan in alert patients with MHI could allow a 46% reduction in scans in our study. However, before S-100B testing can be used clinically, larger domestic trials conforming to all appropriate ethical guidelines need to be conducted in the near future.

해상풍력 해역이용영향평가 평가서 작성 가이드라인 : 인문ㆍ사회평가 분야 개편 방향

김찬웅,박지훈,육근형 해양환경안전학회 2023 해양환경안전학회 학술발표대회 논문집 Vol.2023 No.04