• 정신신체의학
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• 제29권2호
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• pp.136-143
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• 2021

연구목적 코로나바이러스 사태로 인해 전세계가 보건 위기와 큰 혼란의 국면을 맞은 가운데, 특히 재난 상황에서 시민의 건강을 위해 노력하는 공공 근로자들의 신체적, 정신적 스트레스가 과중해지고 있다. 본 연구는 공공 근로자들의 정신적 스트레스를 분석하고자 했다. 방 법 본 연구에서는 광명시 정신건강복지센터 홈페이지를 통해 모집한 531명의 공공영역 종사자를 대상으로 한국판 지각된 스트레스 척 도(Perceived Stress Scale, PSS), 한국판 우울증 평가도구(Patient Health Questionnaire-9, PHQ-9), 한국판 사건 충격 척도 수정판(Impact Event Scale-Revised, IES-R-K)을 시행하였다. 결 과 분석 결과에 의하면 코로나 19 관련 종사자들은 중등도 이상의 지각된 스트레스 반응(85.2%), 우울증상(22.2%), 외상 후 스트레스 관련 증 상(38.8%)을 보여, 상당한 스트레스와 우울증상을 경험하는 상태로 나타났다. PSS 총점은 PHQ-9, IES-R 총 점 및 IES-R의 하위 척도별 점수와 유의한 상관관계를 보여, 주관적으로 지각된 스트레스 반응 정도가 우울 증상과 연관되어 있음을 시사하였다. PSS, PHQ-9, IES-R 총점은 각각 모두 연령과 음의 상관관계를 보였다. 즉, 연령이 직무 스트레스 반응과 번아웃에 대한 보호요인으로 작용할 가능성이 있다. 결 론 향후에 공공영역 종사자 들의 정신건강에 관한 추가적인 연구가 필요하겠으며 정신건강 관리 및 적절한 개입이 마련되어야 할 것으로 사료된다.

• 한국환경보건학회지
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• 제46권5호
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• pp.525-531
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• 2020

Objectives: This study was performed to identify the epidemiological features of a food poisoning outbreak in a company cafeteria located in Chungcheongnam-do Province, Korea in June of 2020 and to suggest preventive measures for a similar incidence. Methods: A total of 84 patients with acute gastroenteritis were examined. Environmental samples were obtained from 16 food handlers, six food utensils, 135 preserved foods served over three days and nine menus, and six drinking water samples. These are analyzed to detect viruses and bacteria. Results: Ninety-four out of the 402 people who were served meals (23.4%) predominantly showed symptoms of diarrhea, and the number was over 3 times. Among the 84 patients under investigation, 17 cases (20.2%) were positive for Enteropathogenic E. coli (EPEC) and 18 cases were positive for Clostridium (C.) perfringens (21.4%). Based on the investigation, it was concluded that the main pathogens were EPEC and C. perfringens. For EPEC, it was detected in three of the food service employees and in the preserved food and curry rice. The results of pulsed field gel electrophoresis indicate that all EPEC cases are closely related except for one food service employee. Assuming that isolated EPEC originated from the preserved food, the incubation period is about 25 hours. The origin of the C. perfringens was not determined as it was not detected in the food service employees or environmental samples. Conclusions: This case suggests that food provided in group food service centers must be thoroughly managed. In addition, identifying the pathogens in preserved food is very important for tracing the causes of food poisoning, so food must be preserved in an appropriate condition. To prevent similar food poisoning cases, analyzing cases based on epidemiological investigation and sharing the results is needed.

• 한국식품조리과학회지
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• 제16권3호
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• pp.232-244
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• 2000

현재 우리나라의 급식산업체에서는 급식활동에 대한 위생관리를 철저히 하기 위하여 새로운 위생관리시스템을 모색하고 있으며, 일부 대기업이 운영하고 있는 급식산업체에서는 식품제조업체에서 이미 적용하고 있는 HACCP 시스템을 적용하기 위하여 노력하고 있다. 국내 중소기업이 운영하고 있는 급식장에서는 정보 및 전문가의 부족으로 HACCP Plan을 체계적으로 개발하는데 상당한 부담을 느끼고 있어 정부나 관련기관의 지원이 필요한 실정이며, 정부에서는 현재 급식장에 HACCP을 적용하기 위하여 시범사업을 실시하고 있는 등 이에 따른 노력을 기울이고 있다. 학계에서도 HACCP Plan에 대한 연구보고가 간혹 있어 왔으나 이러한 연구의 대부분이 몇 가지 메뉴에 치우쳐 있어 매일 다양한 수십가지의 메뉴가 제공되고 있는 급식장 전체에 대하여 HACCP을 적용하기 어려워 급식장에서 제공되는 전체 메뉴의 HACCP적용을 위한 통합적인 HACCP Plan이 절실히 필요하였다. 본 연구에서는 단체급식시설에서 HACCP 시스템을 적용하기 위하여 위해분석, 중요관리점의 설정, 관리기준 설정, 중요관리점을 관리하기 위한 모니터링 방법의 설정, 수정조치의 확립, 검증절차의 확립 및 기록유지시스템의 확립과 같은 HACCP 기본적인 7가지 원칙에 의거하여 HACCP Pln이 개발되었으며, 검수에서부터 배식까지 모든 작업단계에서 확인된 많은 위해요소가운데 12개의 위해요소가 중요관리점(CCP)로 설정이 되었고 검수단계에서 운송차량의 배송온도가 유일한 관리점 (CP)로 설정되었다. 급식장에서 일어날 수 있는 위해는 수없이 많으며 본 연구에서 제시한 Generic HACCP Model은 1, 2명의 영양사와 몇 명의 조리사가 작업을 하는 일반적인 급식장의 현실에 맞도록 급식장에서 실제적으로 사용할 수 있도록 비교적 간단하게 계획되어 급식장에서 일어날 수 있는 모든 위해를 통제할 수는 없으므로 각 급식장의 현실에 맞도록 재구성하여 적용하는 것이 필요하다. 무엇보다도 급식장의 조리종사자를 대상으로 작업 위생을 위한 교육ㆍ훈련 프로그램이 선행 또는 병행되어야 HACCP의 효과를 기대할 수 있으며, HACCP 시스템을 성공적으로 급식부문에 도입하기 위해서는 급식장 현실에 맞는 전문적인 교육ㆍ훈련 프로그램의 개발이 필요하다. 또한 급식 경영자의 식품에 대한 안전성 의식 및 HACCP 시스템 실행 의지, 작업장 시설의 개선과 조리기계·기구의 위생 규격 강화와 철저한 유지ㆍ관리, 식재료 입고에서부터 배식까지 절차, 방법, 기준 등의 표준화, 특히 메뉴 레시피의 표준화 등은 HACCP 시스템을 급식장에 성공적으로 도입하기 위하여 필요한 요건들이라 할 수 있다.

• 한국습지학회지
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• 제23권1호
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• pp.27-34
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• 2021

본 연구에서는 랜덤포레스트를 이용하여 8개 보 지점별 남조류 발생 주요 영향인자를 도출하고, 조류경보제 기반의 범주형 예측모델을 개발하였다. 8개 보 지점의 랜덤포레스트의 변수 중요도를 살펴본 결과, 상류의 보 지점들은 남조류 발생에 있어 보 운영에 따른 영향을 직접적으로 받는 것으로 나타났다. 이는 효율적인 보 운영을 통한 남조류 관리가 가능할 수 있다는 것을 의미한다. 중류 구간은 DO와 E.C가 주요 영향인자로 도출되었다. 공간적으로 구미와 김천에 대규모 산업공단들이 밀집되어 있으며, 환경기초시설의 배출량이 큰 영향을 끼치는 구간이다. 따라서 폭염 및 가뭄 시기에 중류 유역에서 배출되는 환경기초시설의 방류는 본류의 E.C를 증가하게 하고 남조류 발생을 촉진 시키는 것으로 나타났다. 중·하류에 위치한 보 지점들은 폭염 및 가뭄의 영향을 가장 많이 받는 지역으로 여름철 가뭄에 따른 남조류 대발생에 대비하여 선제적인 관리가 필요한 지점으로 나타났다. 본 연구를 통해 지점별 남조류 발생 영향인자를 도출하였으며, 맞춤형 조류관리를 위한 정책적 의사결정의 기초자료로 제공될 수 있을 것으로 판단된다.

• 동의신경정신과학회지
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• 제30권3호
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• pp.165-175
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• 2019

Objectives: This study was conducted to investigate the emotional characteristics of the patients within one year after stroke using the Core Seven Emotions Inventory-Short Form. Methods: It analyzed the medical records of 39 stroke patients who had visited W University hospital and completed the Core Seven-Emotions Inventory-Short Form (CSEI-S), the K-MBI, the PWI-SF, and the HADS. Patients data were analyzed by descriptive analysis, frequency analysis, the Mann-Whitney U test, and the nonparametric test of the CSEI according to the period of stroke onset in patients and Spearman's correlation analysis using the SPSS (Statistical Package for the Social Science, IBM, United States of America) Version 23.0. Results: First, in the case of depression, all subjects were in the danger group, although more than half of the joy, anger, thinking, sadness and fear were included in the normal group in the shortening of the key seven-point scale. Secondly, in measuring the social and psychological stress and hospital anxiety and depression, social and psychological stress were indicated to be a potential danger group, while anxiety and depression were shown to be a healthy group. Thirdly, the emotional characteristics were explored according to the sub-factor of the shortening of the key seven-figure emotional scale after being classified within two months, between two and six months and over six months depending on the duration of the outbreak. As a result, statistically significant, Joy was the highest score over six months and the lowest score between two and six months. On the other hand, the case of depression was depicted to be significantly lower at over six months, and was highest between two and six months. Finally, the correlations on each scale were statistically significant. Conclusions: This study provided that the CSEI-S can be used to simply to measure the emotions of patients according to the period of the onset of stroke in the clinical scene.

• 한국응용곤충학회지
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• 제22권2호
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• pp.84-97
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• 1983

Under the limited arable land, the enhancement of agricultural productivity is indispensable to provide the food demand which is concomitant with the rapid increase in population. From this viewpoint, the upbringing and dissemination of high-yielding varieties has been promoted continuously and several modifications in cultural practices, including heavy fertilization, dense planting, and early transplanting, also have been gradually developed. However these changes in cultivation have led to the increased outbreak of insect pests and diseases. And this unexpected results have accelerated the number and complexity of pesticides employed as well as their consumption. Even though pesticides are essential materials contributing to the steady production of agricultural crops, large scale consumption of them has given rise to several adverse impacts, such as mammalian hazard and/or environmental contamination. In this respect, recent development of new pesticides has been concentrated on 'safe pesticide', as it were, that has the highly selective properties without unfavorable side influences on other ecosystem. According to literature cited up to now, feasibilities of safe pesticide development would be summarized as two categories. One of them is the development of chemical pesticides, which include the molecular structure modification of established pesticides for increased safety and synthesis of new safe chemicals which can attack the vulnerable point of physio-ecological characteristics in insect pests and diseases. The other is the biological pesticides which comprise natural enemies and microorganisms to act selectively on confined insect pests and diseases, In addition, improvement of physico-chemical properties of available pesticide formulations would be one of the desirable means for safe pesticide development in view of efficacy enhancement and minimization of hazardous properties or safe pesticide development, various approaches are feasible and needed to study, however, long period and much financial outlay are necessary to develop a new item. And under the present situation in Korea, there are many difficulties for performing research on all the possible routes. Therefore, combined pesticides by the reasonable combination of already registered resticides evaluated as the fairly safe pesticides and safe formulation based on their physico-chemical properties would be developed primarily. And many efforts would be given gradually for the development of new chemical and biological pesticides.

• 한국환경보건학회지
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• 제44권5호
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• pp.409-420
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• 2018

Objectives: An outbreak of humidifier disinfectant-related respiratory disease has not only been a massive disaster for end users, but it is also a concern for the workers of the manufacturers. This study presents the results of a questionnaire survey on the health effects among workers involved in the manufacture of humidifier disinfectants. Methods: Seven sites where humidifier disinfectants were manufactured were identified. A questionnaire survey was conducted to assess the physical symptoms experienced by workers related to humidifier disinfectants. Among a total of 177 workers, 42 subjects were available for the survey. Results: Twenty-one of the 42 respondents reported that they experienced respiratory or skin and mucosal irritation symptoms during work. Of the respondents who experienced symptoms, 14 believed that their symptoms were related to the work process and reported that the symptoms were experienced while working. However, no respondents reported ongoing symptoms or sequelae during the investigation period, and this result could not minimize selection bias due to low response rates. We then compared the characteristics of the group who experienced suspicious symptoms with those of the group without any symptoms. There was no statistically significant difference between two groups. Conclusions: We could not find significant health effects related to the humidifier disinfectant manufacturing process, although 21 respondents experienced stimulant symptoms and 14 respondents believed that the symptoms were related to the work process. Due to the long period of time after occupational exposure and the lack of data, there were many limitations to this study. However, this is one of the few follow-up investigations of workers related to this large-scale disaster in South Korea and the limitations of this study highlight the need to follow up with a nationwide database rather than an occasional survey.

• 대기
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• 제17권1호
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• pp.87-99
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• 2007

Simulation results of Asian Dust Aerosol Model (ADAM) for the period of April 7-9, 2006 were analyzed, comparing with observed PM10 data. ADAM simulated around ten times lower than on-site PM10 concentration in the source regions: Zhurihe, Tongliao, Yushe, Dalian and Huimin. As the result of this low concentration, transported amounts of Asian Dust were under-estimated as well. In order to quantify a forecasting accuracy, Bias and RMSE were calculated. Even though remarkably negative Biases and high RMSEs were observed, ADAM simulation had followed well up the time of dust outbreak and a transported path. However, the emission process to generate dust from source regions requires a great enhancement. The PM10 concentration at the surface reached up to $2,300{\mu}gm^{-3}$ at Baeknyoungdo and Seoul (Mt. Gwanak), up to $1,750{\mu}gm^{-3}$ at KGAWO about 18:00 LST in April 8, respectively; however, ADAM did not simulate the same result on its second peak. It is considered that traveling Asian dust might have been lagged over the Korean peninsula by the blocking of surface high pressure. Moreover, the current RDAPS's 30 km grid resolution (which ADAM adopts as the meteorological input data) might not adequately represent small-scale atmospheric motions below planetary boundary layer.

• 한국안전학회지
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• 제35권4호
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• pp.74-83
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• 2020

In Korea, about 110,000 LPG small storage tanks of less than three tons have been installed in restaurants, houses and factories, and are used as LPG supply facilities for cooking, heating and industrial use. In the case of combustible liquefied gas storage tanks, the tank may rupture due to the temperature increase of the tank steel plate (approximately 600℃) even when the safety valve is operating normally, causing large-scale damage in an instant. Therefore, in the event of a fire near the LPG small storage tank, it is necessary to accurately predict the timing of the BLEVE(Boiling Liquid Expanding Vapour Explosion) outbreak in order to secure golden time for lifesaving and safely carry out fire extinguishing activities. In this study, we have first investigated the results of a prior study on the prediction of the occurrence of BLEVE in the horizontal tanks. And we have developed thermodynamic models and simulation program on the prediction of BLEVE that can be applied to vertical tanks used in Korea, have studied the effects of the safety valve's ability to vent, heat flux strength of external fires, size of tanks, and gas remaining in tanks on the time of BLEVE occurrence and have suggested future utilization measures.

• 한국빅데이터학회지
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• 제2권1호
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• pp.59-69
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• 2017

재난 경제학 분야의 선행연구는 대부분 뒤늦은 거시지표 또는 특정 업종에 국한된 분석형태이다. 재난 예방이 무엇보다 중요하지만, 재난 발생 즉시 파급되는 실시간 영향도 분석 및 그에 따른 재건 정책 또한 예방 못지 않은 중요한 분야이다. 본 연구는 카드사의 실시간 빅데이터를 활용한 사건 연구로 세월호 참사와 메르스 사태로 인한 민간소비의 파급효과를 분석하였으며 Marketing Mix Modeling 방법론의 Idea를 활용하였다. 분석 결과 세월호 참사는 3개월에 걸쳐 민간소비가 위축된 반면 메르스 사태는 비슷한 규모로 1개월동안 일시적인 급격한 민간소비 감소현상을 보이고, 바로 회복하는 모습을 보였다. 본 연구의 초점은 재난이 종료되지 않은 시점에서 속보성으로 피해규모가 파악이 가능한지 알아보고자 한 것이며 분석모형을 주간 단위로 설계하여 시점을 이동하면서 분석했을 경우 속보성 지표로도 의미가 있다는 것을 확인하였다. 향후 재난 또는 사건 발생시 본 연구가 직관적인 모니터링 지표로서의 초석이 되길 기대한다.