• Korean Journal of Clinical Laboratory Science
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• v.50 no.1
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• pp.71-76
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• 2018

This study examined the status of the laboratory biosafety of researchers in Korea during 03 Jan 2017~25 Mar 2017. Questionnaires were given out to 500 researchers working with pathogens in the laboratory of universities and institutes. According to the results, the respondents showed a high level of awareness but not compliance on the overall biosafety rules and regulations. Regarding the Biosafety facility level, 279 (55.8%) of respondents answered "know" and 221 (44.2%) of respondents answered "no". Despite the insufficient safety equipment and biosafety plans, researchers believed that appropriate safety measures could protect the workers and that their laboratories are safe. In a study involving biosafety education, 80% of the researchers had been trained in laboratory safety and 20% had never received safety education. The need for biosafety education was 66% and the satisfaction rate of education was 46%. These results suggest that the researchers already had experience in biosafety training, but they believed that continuing education is necessary. In addition, there were opinions that the most important thing to improve the biosafety status is to strengthen the training program and education system. In conclusion, it is necessary to develop a better training system for laboratory biosafety regarding the exposure risks.

• Proceedings of the Korea Water Resources Association Conference
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• 2019.05a
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• pp.120-120
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• 2019

국내에서는 예측 불가능한 재난으로 인한 침수 피해 발생사례가 증가하였다. 따라서 침수 피해 예측이 더욱 중요해지고 있는 실정이다. 기존에는 주로 수치모형을 통한 침수예측을 하였고, 정보통신기술도 발달해왔지만 아직까지 수치모의에 많은 시간이 소요되기 때문에 침수 피해의 실시간 예측이 힘든 상황이다. 이에 국립재난안전연구원(2017)에서 침수예측을 위한 보간 모델인 SIND(Scientific Interpolation for Natural Disaster) Model을 개발하였다. 이는 보간을 이용한 모델이기 때문에 그동안 사용해왔던 물리 모형보다 간단하다. 그러나 정확한 값이 아닌 보간을 이용한 모델이기 때문에 정확도를 검토할 필요가 있다. 따라서 본 연구에서는 Mapping분야에서 사용하는 CRITIC(CRiteria Importance Through Intercriteria Correlation) 기법을 활용하여 지도의 정확도 검토를 수행하였다. CRITIC은 형상기준, 위치기준, 면적기준을 이용하여 형상유사도를 산정하는 방법이며, 이 기법을 활용하여 국가가 제공한 침수예상도(국립해양조사원, 2010)와 SIND모델 결과 지도를 비교하였다. 형상기준은 지도의 형상을 나타내는 형상지수를 비교하고, 위치기준은 지도의 무게중심의 일치정도, 면적기준은 형상 면적을 비교하는 것이다. 지도는 총 300여개의 매칭 객체 쌍을 가지고 수행하였고, 위험도 등급은 Grade 1부터 Grade 5 까지 분류하여 나타내었다. 연구 대상지역은 ${{\bigcirc}{\bigcirc}}$시이다. 그 결과, 형상유사도는 약 200여개의 매체쌍이 0.80 이상의 값을 나타냈고, 나머지 매체 쌍은 0.75이하의 값을 나타내었다. 위험도 등급이 낮을수록 형상유사도 값은 크게 나타나고, 위험도 등급이 높을수록 형상유사도 값이 작게 나타나는 경향을 보였다. 이는 위험도 등급이 높은 곳의 경우, 해안선의 복잡한 지형형태 때문으로 판단된다. Mapping 분야에서 형상유사도 적합성 기준이 0.75이므로 결과는 60%이상이 정확하다고 판단할 수 있다. 따라서 본 연구에서 검토를 수행했던 간단한 방정식을 이용한 SIND 모델은 정확하다고 판단할 수 있다. 다만, 복잡한 지형과 현재 고려되고 있는 영향인자 외에 다양한 구조물 등을 고려한다면 형상유사도가 향상될 것이라 기대된다.

• Journal of Nutrition and Health
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• v.57 no.3
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• pp.320-335
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• 2024

Purpose: This study examined the impact of adolescents' dietary behavior on their quality of life using the nutrition quotient for adolescents (NQ-A) for some high school students in Seoul. Methods: The subjects were 176 high school students living in Seoul. The NQ-A was used to assess the dietary quality, and the quality of life was assessed by categorizing it into life satisfaction, environment, health, participation and safety, leisure activities, and emotional factors using survey questions validated through previous studies. Results: The NQ score of the survey subjects was 49.30 points. Based on the NQ scores, 7.4%, 46.6%, and 46.0% of participants were categorized as the 'high', 'medium', and 'low' groups, respectively. The total NQ score and balance, diversity, and practice factor scores were positively correlated with life satisfaction, environment, health, participation and safety, and leisure activities among the quality of life subscales. Regression analysis showed that the total NQ score was positively associated with life satisfaction, health, leisure activities, and emotions; the moderation factor was negatively associated with life satisfaction and health. The balance factor was positively associated with the environmental factor. The practice factor was positively associated with health, leisure activities, and emotions, and the environment factor was negatively associated with emotions. Conclusion: These results show that adolescents' quality of life is closely related to their diet, so it is necessary to maintain a balanced and varied food intake and desirable eating behaviors to improve adolescents' quality of life. Furthermore, adolescents' quality of life is influenced by other factors. Therefore, further research is needed to assess the quality of life, including dietary factors, as well as physical, emotional, psychological, and social development.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.30-35
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• 2008

The purpose of this study is to analyze and define user's emotional satisfaction factors to the PC OS GUI image. The study is to investigate the relationship between PC OS GUI Image and Sensitive Vocabula교 based on user's emotional preference. 47 user preferred sensitive words are collected by the initial survey. Through the similarity test, 47 words are narrowed down to 20 comprehend words. The semantic differential methods is used in the final survey with 5 step questionnaire. From this process, user preferred the GUI design that is vocabularized as Clear, Easy, Safety, Stability. Additionally, the result shows that the image of Clear is related to Safety and the image of Easy is related to Stability. The result of the study could be used in design PC OS GUI as base data.

• Journal of Korea Water Resources Association
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• v.55 no.1
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• pp.85-97
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• 2022

In this study, a method for an integrated flood risk mapping was proposed that simultaneously considers the flood inundation map indicating the degree of risk and the disaster vulnerability index. This method creates a new disaster map that can be used in actual situations by providing various and specific information on a single map. In order to consider the human, social and economic factors in the disaster map, the study area was divided into exposure, vulnerability, responsiveness, and recovery factors. Then, 7 indicators for each factor were extracted using the GIS tool. The data extracted by each indicator was classified into grades 1 to 5, and the data was selected as a disaster vulnerability index and used for integrated risk mapping by factor. The risk map for each factor, which overlaps the flood inundatoin map and the disaster vulnerability index factor, was used to establish an evacuation plan by considering regional conditions including population, assets, and buildings. In addition, an integrated risk analysis method that considers risks while converting to a single vulnerability through standardization of the disaster vulnerability index was proposed. This is expected to contribute to the establishment of preparedness, response and recovery plans for providing detailed and diverse information that simultaneously considers the flood risk including social, humanistic, and economic factors.

• Transactions of the Korean Society of Pressure Vessels and Piping
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• v.13 no.2
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• pp.1-18
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• 2017

Metal fatigue is an important aging mechanism that material characteristics can be deteriorated when even a small load is applied repeatedly. An accurate fatigue evaluation is very important for component structural integrity and reliability. In the design stage of a nuclear power plant, the fatigue evaluations of the Class 1 components have to be performed. However, operating experience shows that the design evaluation can be very conservative due to conservatism in the transient severity and number of occurrence. Therefore, the fatigue monitoring system has been considered as a practical mean to ensure safe operation of the nuclear power plants. The fatigue monitoring system can quantify accumulated fatigue damage up to date for various plant conditions. The purpose of this paper is to describe the fatigue monitoring procedure and to introduce the fatigue monitoring program developed by the authors. The feasibility of the fatigue monitoring program is demonstrated by comparing with the actual operating data and finite element analysis results.

• Journal of the Korean Applied Science and Technology
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• v.35 no.3
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• pp.606-611
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• 2018

City natural gas is classified flammable hazardous gas and should be secured according to explosion risk assessment determined by Industrial Standard KS C IEC. In this study, leak size, ventilation grade and effectiveness were adopted to the KS C IEC for risk assessment in natural gas supply system. To evaluate the applicability of the computational fluid dynamics (CFD), the risk assessment was studied for four different conditions using hypothetical volume($V_z$) valuesfrom gas leak experiments, KS C IEC calculation, and CFD simulation.

• Proceedings of the KOR-KST Conference
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• 1998.10b
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• pp.453-453
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• 1998

우리나라가 관할하는 공역의 넓이는 약 40만$\textrm{km}^2$로 주한미군이 1952년부터, 국방부가 1958년부터 관리해 오다가 1995년에 건설교통부가 공역관리 업무를 인수하였다. 우리나라의 공역(대구 FIR)에는 비행금지구역, 비행제한구역, 위험구역, 경제구역, 훈련구역, 군작전구역 등 무려 114개의 특수목적 공역이 설정되어 있어 민항공기의 운항이 자유롭지 못하다. 또한 내륙을 중심으로 14개의 접근관제규역이 설정되어 있고 각기 관할구역에 대하여 배타적인 권리를 행사함으로써 신공항건설에 따라 운항이 필요한 소요공역 확보에도 애로가 많은 실정이다. 항로는 국내항로 5개, 국제항로 11개 등 모두 16개의 항로를 운영하고 있으나 대부분 한 개의 항로를 양방향으로 운영하고 있어 교통량 처리가 어려운 실정이고 항공교통량 전체의 75%가 수도권으로 집중되는 현상이 나타나 안전도 확보에도 지장을 주고 있다. 우리나라는 군사적 특수성 때문에 군의 작전비행 활동이 상당히 많으나 관제 및 비행절차에 관한 규정을 군과 민이 각각 달리 운영하고 있는 문제점들이 있다. 금번 세미나에서는 군의 작전활동을 유지하면서 민 항공의 안전성, 경제성 등을 확보하기 위하여 1)국제민간항공기가 제정한 공역등급화(ATS Air Space Spacification)방안, 2)접근관제구역의 조정개선 방안 3)특수공역의 합리적 운영방안, 4)항로의 적선화, 복수의 일방통행 항로 확보 및 국제연결 항로의 다양한 방안, 5)군민간의 관제규정의 일원화 방안 등을 제안하고자 한다.

• Journal of Korean Society of Transportation
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• v.21 no.1
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• pp.21-40
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• 2003

A traffic accident analysis method was developed and tested based on the highway alignment risk indices using geographic information systems(GIS). Impacts of the highway alignment on traffic accidents have been identified by examining accidents occurred on different alignment conditions and by investigating traffic accident risk indices(TARI). Evaluative criteria are suggested using geometric design elements as an independent variable. Traffic accident rates were forecasted more realistically and objectively by considering the interaction between highway alignment factors and the design consistency. And traffic accident risk indices and risk ratings were suggested based on model estimation results and accident data. Finally, forecasting traffic accident rates, evaluating the level of risk and then visualizing information graphically were combined into one system called risk assessment system by means of GIS. This risk assessment system is expected to play a major role in designing four-lane highways and developing remedies for highway sections susceptible to traffic accidents.

• Journal of the Korea institute for structural maintenance and inspection
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• v.20 no.5
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• pp.9-17
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• 2016

Vehicle collision to bridges has been known as one of the causes of bridge collapse, and the emergency plans and disaster management has been recently emphasized to secure public safety. This study conducted risk assessment of vehicular collision to bridges for highway bridges in Korea. Risk assessment consists of three steps; preliminary risk analysis(PRA), simplified risk analysis(SRA) and detailed risk analysis(DRA). The PRA firstly screens out the possibility of occurrence of the event. The SRA identifies influencial factors to risk of the event and evaluates risk scores to determine risk levels and necessity of DRA that investigates the risk of the bridge in detail. This study focuses on the methodology of the risk assessment, especially the SRA, and the stratification methods which evaluate risk levels of vehicular collision. The analysis results were compared to the reported vehicular collision accidents. The proposed method can be utilized in similar disaster management area.