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한국에서 목맴을 이용한 자살 비율의 증가와 전체 자살률 증가 사이의 연관성에 대한 연구
안명희,박수빈,이태엽,이아롱,견영기,홍진표,Ahn, Myung Hee,Park, Subin,Lee, Taeyeop,Lee, Ahrong,Kyeon, Yeong Gi,Hong, Jin Pyo 대한불안의학회 2013 대한불안의학회지 Vol.9 No.2
Objective : This study was conducted to examine the relationship between the annual changes of suicide methods and suicide rates in South Korea. We compared the suicide methods in South Korea with those in six other OECD countries, Japan, Finland, France, United States, Canada and Australia. Methods : Data of suicide rates and methods since the year 2000 were obtained from the official electronic mortality data published by the seven countries and from the World Health Organization [WHO] mortality database. We compared the correlation between suicide methods and suicidal rates in South Korea using Spearman's correlation test. Results : The proportion of hanging steadily increased, whereas self-poisoning steadily decreased from 2000 to 2011. The increased use of hanging was associated with the increase of suicide rates in South Korea. The preference for jumping as a suicide method in South Korea can be notably compared to that of other countries. Conclusion : Preference use of lethal methods, such as hanging, may play a great role in the increase of suicide rates in South Korea. The limitation of physical and cognitive access to lethal methods can be an effective suicide prevention strategy.
북한어판 CES-D(Center for Epidemiologic Studies Depression Scale-North Korea ; CES-D-NK)의 신뢰도와 타당도
박승진,이소희,전진용,이태엽,한정미,안명희,홍진표,Park, Sung-Jin,Lee, So Hee,Jun, Jin Yong,Lee, Taeyeop,Han, Jeong Mee,Ahn, Myung Hee,Hong, Jin Pyo 대한불안의학회 2015 대한불안의학회지 Vol.11 No.1
Objective : To translate Center for Epidemiologic Studies Depression Scale (CES-D) into North Korean language and to examine its reliability and validity Methods : North Korean defectors (n=207) recruited from the call center for North Korean defectors participated. Psychiatrists and psychiatric residents interviewed the participants and made the psychiatric diagnoses. Subsequently, the participants completed the CES-D, Impact of Event-Scale-Revised-North Korea (IES-R-NK), Alcohol Use Disorders Identification Test-North Korea (AUDIT-NK), and Brief Psychological State Inventory for North Korean Refugees (BPSI-NKR) questionnaires. Of the original participants, 143 subjects participated in test-retest reliability study after one week. Results : Cronbach's alpha coefficient of CES-D-NK was superior in both males (0.91) and females (0.93). The test-retest correlation coefficient was high (males, 0.64 ; femals, 0.79). Good convergent validity was evident by significant correlations with IER-R-NK, BPSI-NKR-Depression and BPSI-NKR-PTSD, respectively. CES-D-NK had no or weak correlations with AUDIT-NK and BPSI-NKR-Alcohol, showing its discriminant validity. Conclusion : CES-D-NK could be a reliable and valid tool for screening and assessing depressive symptoms of North Korean defectors.
북한어판 알코올사용장애 진단검사(Alcohol Use Disorder Identification Test-North Korean version, AUDIT-NK)의 신뢰도와 타당도
김해수(Haesoo Kim),이소희(Soo Hee Lee),전진용(Jin Yong Jun),이태엽(Taeyeop Lee),한정미(Jeong Mee Han),안명희(Myung Hee Ahn,),최지희(Ji Hee Choi),홍진표(Jin Pyo Hong) 한국중독정신의학회 2016 중독정신의학 Vol.20 No.2
Objectives : The aim of the study was to develop North Korean version of Alcohol Use Identification Test and assess its reliability and validity. Methods : North Korean defectors (n=206) were recruited from North Korean counseling call center. Psychiatrists and psychiatric residents interviewed the participants. Psychiatric diagnosis were given to those who met criteria for Diagnostic and Statistical Manual of Mental Disorders-IV. Participants then completed the Alcohol Use Disorder Identification Test-North Korean version (AUDIT-NK), Center for Epidemio-logic Studies Depression Scale-North Korea (CES-D-NK), Impact of Event Scale-Revised-North Korea (IES-R-NK), and alco-hol section of Brief Psychological State Inventory for North Korean Refugees (BPSI-NKR-alcohol). After one week, the same questionnaires were administered to 131 participants to assess test-retest reliability. Results : Cronbach’s alpha value indicating internal reliability was 0.88 for AUDIT-NK. The test-retest cor-relation coefficient was 0.91. Pearson correlation coefficient be-tween AUDIT-NK and BPSI-alcohol was 0.80 for males and 0.71 for females, indicating high convergent validity. Good dis-crimination and validity of AUDIT-NK were evident based on its low correlation with CES-D-NK (males, 0.16 ; females, 0.00) or IES-R-NK (males, 0.16 ; females, 0.03). Conclusion : AUDIT-NK is a valid and reliable measure to assess symptoms of alcohol use disorder in North Korean refugees.
캐나다 몬트니 셰일플레이의 시추완결인자와 셰일가스 누적 생산량 간의 상관관계분석
허승원(Seungwon Heo),이경북(Kyungbook Lee),김하영(Hayoung Kim),이태엽(Taeyeop Lee),장상엽(Sangyup Jang),백문석(Munseok Baek) 대한지질학회 2021 대한지질학회 학술대회 Vol.2021 No.10
전통자원과는 달리 셰일자산의 경우, 수평시추와 다단계 수압파쇄를 통해 개발하며 시추완결인자에 따라 생산량 차이가 크다. 생산량 극대화를 위해 탐사자료로 저류층 모델을 구축한 후, 저류층 시뮬레이션을 통해 시추완결인자를 최적화하여 현장에 적용한다. 하지만, 자연균열망과 취성도에 대한 규명이 필요하며, 흡착가스에 대한 분석이 뒷받침되어야 저류층 시뮬레이션 결과를 신뢰할 수 있다. 이러한 분석에 소요되는 시간과 비용이 클 뿐만 아니라, 제한된 시추공 자료로 인해 불확실성도 크다. 최근 북미 셰일플레이의 누적된 시추완결자료에 머신러닝을 적용하여 미래 셰일가스 생산량을 예측하는 연구가 활발히 진행되고 있다(Lee et al ., 2019; Alolayan et al ., 2021; Nguyen-Le et al ., 2021). 프록시(proxy) 모델의 신뢰도를 높이기 위해선 출력인자에 큰 영향을 미치는 입력인자인 핵심특징선정이 중요하다. 본 연구는 수평시추 및 다단계 수압파쇄인자와 누적 생산량과의 상관관계를 파악하여 머신러닝기반 예측 모델의 핵심인자를 제안하고자 한다. 연구지역은 캐나다 몬트니 셰일플레이 중 피스리버분지로 시추완결인자와 셰일가스 누적 생산량 간의 상관관계를 분석하였다. Accumap과 Enverus 상용 데이터베이스를 활용해 1,005개의 셰일가스 생산정의 월간 생산량과 시추완결인자를 확인하였다. 분석에 활용한 정적인자는 스테이지(stage) 개수, 자극(stimulated) 길이, 프로판트(proppant) 정보 등의 수압파쇄인자와 유정의 수직깊이, 수평시추길이 등의 시추궤도인자로 구성된다. 정적인자와 분석할 생산량은 초기 12개월 누적 생산량으로 설정하였다. 정적인자와 누적 생산량과의 피어슨(Pearson) 상관관계분석을 수행한 결과, 스테이지 개수, 수평시추길이, 사용된 프로판트 양이 자극길이와 수직깊이보다 상관관계가 높게 나타났다. 이와 같은 결과는 향후 셰일가스 생산량 예측을 위한 머신러닝 모델 연구의 기초자료로 활용될 수 있다.