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김효동,김혜리,서청민,전진우,박교식,Kim, Hyodong,Kim, Haelee,Seo, Cheongmin,Jun, Jinwoo,Park, Kyoshik 한국안전학회 2022 한국안전학회지 Vol.37 No.2
Currently, in Korea, lower and upper tier qualifying quantities of the 97 substances requiring preparation for accidents have been designated. The information on the submission of chemical accident prevention management plan varies depending on whether the handling volume is above or below the lower or upper qualifying quantity. Because the criteria of the lower and upper qualifying quantities of substance requiring preparation for accidents are not stipulated in the Chemical Substances Control Act, this study attempted to establish a criterion through significance verification. In addition, the study investigated whether these qualifying quantities are related to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), toxic concentration endpoint, and National Fire Protection Association (NFPA). Finally, by comparing the risk categorization of the GHS, endpoint, and NFPA, it was evaluated whether the circulation-volume-based risk categorization of the substance requiring preparation for accidents that are in the top 13 is appropriate. The qualifying quantities of benzene, toluene, and sulfuric acid needed to be adjusted upward, while those of methyl alcohol and ammonia were adjusted downward from the current qualifying quantities. It is required to establish a quantified criterion that fully reflects the domestic situations in Korea and various indicators such as toxicity, physicochemical properties, and circulation volume for the qualified criterion of hazardous chemical substances. The study is expected to be helpful in establishing an efficient system by systematizing the criterion for qualifying quantity.
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김효동,안기옥,박주옥,김주영,이승철,이상헌 대한응급의학회 2019 대한응급의학회지 Vol.30 No.2
Objective: This study examined the epidemiological characteristics of bicycle injuries and the wearing of a helmet. Methods: A cross-sectional observational study was conducted using the emergency department-based Injury In-depth Surveillance data from 2013 to 2016. The study population consisted of patients related to bicycles of all ages. The variables associated with helmet wearing were sex, age, type of location, activity at injury, alcohol use at injury, and time of injury. Multivariable logistic regression analysis was conducted to estimate the risks of nonuse of helmets. Results: Among the 31,923 eligible patients, 3,304 patients (10.3%) were wearing helmets at the time of the injury. The adjusted logistic regression model showed that females (adjusted odds ratio [aOR], 0.675; 95% confidence interval [CI], 0.614-0.742), teenagers (aOR, 0.265; 95% CI, 0.232-0.302), old age (aOR, 0.378; 95% CI, 0.326-0.438), road except for bicycle lanes (aOR, 0.510; 95% CI, 0.467-0.557), leisure (aOR, 0.290; 95% CI, 0.252-0.334) or vital activity (aOR, 0.188; 95% CI, 0.162-0.218) at injury, alcohol use at injury (aOR, 0.329; 95% CI, 0.253-0.427), night time (aOR, 0.609; 95% CI, 0.560-0.663), and winter (aOR 0.734; 95% CI 0.619-0.872) were significantly associated with the nonuse of helmets. Conclusion: This study identified the factors associated with helmet use during bicycle riding. Strategies aimed at increasing the use of bicycle helmets targeting the risk population are needed.
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유독물질 상위 및 하위규정수량의 기준 및 위험 범주 선정 방안
김효동,박교식 한국안전학회 2022 한국안전학회지 Vol.37 No.6
Qualifying quantities (upper tier (UT) and lower tier (LT)) are designated for the regulation of toxic substances. In this study, we aimed to establish systematic criteria for the qualifying quantities by comparing the South of Korea chemical control act with the European Seveso III Directive (Seveso III). In Seveso III, qualifying quantities are defined as “hazard categories” applying GHS (Globally Harmonized System of Classification and Labelling of Chemicals), and LTR (lower-tier requirements) and UTR (upper-tier requirements) are determined. The Pro HC (proposed hazard categories) were relevant to the GHS classification of toxic substances and were compared with the currently regulated qualifying quantities. Furthermore, we estimated the Pro LTR (proposed lower-tier requirements) and Pro UTR (proposed upper-tier requirements) corresponding to each Pro HC. Consequently, it was supposed that LT and UT were selected based on GHS like those of Seveso III. Therefore, designation criteria for qualifying quantities should be established by setting the Pro HC such as in Seveso III, rather than designating the qualifying quantities of toxic substances by itself individually. In addition, qualifying quantities should not be delegated to GHS classifications (H302, H341, H411) that do not meet the criteria for the designation of toxic substances, and the corresponding substances should be excluded from classification as toxic substances. This study provides insights into the selection of hazard categories and criteria for qualifying quantities of toxic substances.
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대학생의 이동전화사용에서 나타나는 사회적관계망 분석소개
김효동 한국언론학회 2004 한국언론학회 학술대회 발표논문집 Vol.2004 No.-
인터넷과 비견할만하다 하는 이동전화의 확산과 사용에 대한 사회적인 파급효과에 대한 조사가 인터넷 연구에 비해서는 그리 많지 않다고 하겠다. 이 연구는 대학생들의 핸드폰 사용에서 나타나는 사회적 관계가 어떻게 형성되는가를 살펴보는 방법론에 대한 논의를 하고자 한다. 구체적으로 필자는 사회관계망 분석이 이동전화를 사용하는 사용자들의 커뮤니케이션 패턴을 밝히는 방법과 각 패턴에 따르는 사용자들을 군집화해 보는 시도, 그리고 이런 군집들간의 특성의 차이점에 대해서 논의 등을 다루고자 한다. 이를 위하여 대학생에게서 취한 서베이를 파일롯연구의 차원에서 이용할 것이다. 논의를 통해, 개인의 특성 (attributes)에 초점을 맞추는 일반적인 통계 조사방법에 비해서, 각 개인이 직접적으로 가지고 있는 관계(relations)에 초점을 맞추는 사회관계망 분석법이 어떤 의미에서는 보다 효과적일 수 있으며, 이런 분석결과는 다시 개인 특성과 연관 지어져서 해석될 수 있다는 것을 밝히고자 한다.
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