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SiCl4 누출 시 수막설비의 방재효과에 대한 수치 해석 연구
류태인,이은미,김승하,강성미,신창현,조승범 한국안전학회 2023 한국안전학회지 Vol.38 No.3
Silicone tetrachloride (SiCl4) leak accidents cause enormous human and environmental damage because it is highly toxic. Some handling facilities use water curtains to reduce the impact range of SiCl4. Although the water curtain is known as one of the most efficient technologies for post-release mitigation, its effect on reducing SiCl4 concentration needs to be investigated scientifically and quantitatively. In this study, three-dimensional computational fluid dynamics (CFD) was used to investigate the physical and chemical effects of water curtains as a release-mitigation system for SiCl4. SiCl4 is released and dispersed five seconds prior to the operation of the water curtain. Once the water curtain works, the SiCl4 reacts chemically with the water and its concentration decreases rapidly; it reaches an emergency response planning guidelines level 2 (ERPG-2) of 5 parts per million (ppm) at about 570 m. We observed, however, that the physical effect of water curtains on reducing SiCl4 concentration is insignificant when the chemical effect is eliminated. These results are crucial since they can be a scientific and quantitative basis for the 'technical guidelines for estimating the accident affected range'. In order to protect the public from chemical accidents, more toxic gas mitigation technologies need to be developed.
유해화학물질 취급시설 관련 뉴스와 국민신문고 민원 트렌드 빅데이터 분석
류태인,조승범 (사)위기관리이론과실천 2023 Crisisonomy Vol.19 No.10
Since the 2013 revision of the Toxic Chemicals Management Act to the Chemical Substances Control Act, the evaluation of how internal and external environmental changes affect legal systems for facilities handling hazardous chemicals is crucial for prospective system enhancements. Through an analysis of news and civil complaints from 2014 to 2023, it was observed that both external news and internal civil complaints related to handling facilities peaked in 2019, declining as the legal system stabilized. News trends were tracked using Term Frequency(TF), while civil complaints were assessed using TF-IDF (Inverse Document Frequency) to identify significant keywords. The entity name analysis algorithm, Structured Support Vector Machine, was applied to investigate keyword relationships. Among the notices concerning handling facilities, civil complaints related to small quantity standards and small quantity handling facilities were the highest. Inquiries regarding damage reduction facility standards, such as bund walls and detectors, ranked prominently, suggesting a need for policy service improvements in this area.
연구논문 : 외국인 노동자의 이직의도 결정요인에 관한 연구 -자국민 동료그룹의 영향을 중심으로-
류태오 ( Tae Mo Ryu ),최윤호 ( Yun Ho Choi ),최순권 ( Soon Gwon Choi ) 한국인적자원관리학회 2012 인적자원관리연구 Vol.19 No.3
본 연구는 국내에 근무하는 외국인 노동자들의 이직의도 결정요인에 관해 규명하는 것을 목적으로 하고 있다. 먼저, 일반적으로 외국인 노동자들의 이직의도 결정에 중요한 영향을 미치는 것으로 나타난, 상호 작용 적응의 선행요인들인 직무특성요인, 조직의 지원요인, 업무 외 요인(문화적 거리감)의 영향을 살펴보고자 한다. 특히, 본 연구에서는 자국민 동료그룹 평가 요인의 중요성을 인식하고, 이의 영향을 중점적으로 분석하고자 한다. 마지막으로, 상호작용 적응 정도가 이직의도에 미치는 영향을 분석하였다. 실증 분석을 위해 설문조사 방법이 사용되었으며, 부산경남지역 외국인 고용업체의 방문조사, 창원지역 외국인 고용센터 방문자를 대상으로 하는 대면조사, 그리고 김해지역 외국인 거리에서 무작위로 실시된 대면조사 등을 통하여 설문지를 수거하였다. 설문지는 총 500부를 배포하여 이 중 176부가 회수되었고, 이 중 151부의 설문지가 통계분석에 사용되었다. 실증분석 결과, 외국인 노동자에 대한 조직의 지원 정도와 자국민 동료 그룹의 평가가 외국인 노동자의 한국 생활에 대한 상호작용 적응 정도에 유의한 영향을 미치는 것으로 나타났다. 반면, 외국인 노동자가 수행하는 직무의 특성 요인과 문화적 거리감은 외국인 노동자의 상호작용 적응 정도에 유의한 영향을 미치고 있음을 발견하지 못했다. 마지막으로 외국인 노동자들의 상호작용 적응 정도는 이직 의도에 부(-)의 영향을 미치고 있음을 확인하였다. The purpose of this study is to examine the determinants of foreign workers`` turnover intention in Korean company. Usually, turnover intention of foreign workers are affected by the level of interaction adjustment in domestic market, So, we are going to analyze firstly the effecs of pre- determinants of foreign workers`` interaction adjustment, such as job characteristics, support of organization, and cultural distance. In this process, we are focused on the effect of foreign workers`` fellow countrymen. We assume that the assessment by fellow countrymen on their company and usual life can affect to the successful interaction adjustment of foreign workers in Korea. Finally, we will analyze the effects of this foreign workers`` interaction adjustment on the level of their turnover intention. For empirical investigation, questionnaire survey method is used. Questionnaire survey was held through direct visit into Korean company and personal interview with foreign workers in Busan and KyongNam area. 500 questionnaires are distributed and 176 are collected. Among this, 151 questionnaires are used in analysis. The results of statistical analysis show that organizational supports and positive assessment by their follow countrymen significantly affect to the level of interaction adjustment in Korean company. However, we did not find out the significant effects of job characteristics and cultural distance on the level of interaction adjustment. And finally we confirm that the level of interaction adjustment has negative effect on the level of turnover intention of foreign workers.