• 한국안전학회지
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• 제17권1호
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• pp.68-71
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• 2002

A research on accident loss calculation for polyol process without safety management activities, and safety cost estimation using process risk assessment has been implemented. In order to estimate a magnitude of loss, accident scenarios were made by combining result made from HAZOP Study method with accident possibility analysis results implemented with FTA. Also effect assessment was implement for accident consequence of each scenario. And minimum possible loss cost has been calculated when safety investment do or not. Result from cost-benefit analysis was shown as approximately \335 billion(=USS44,000 billion), as cost after subtracting safety management cost from minimum possible loss cost.

• Toxicological Research
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• 제17권
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• pp.37-39
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• 2001

As the preliminary data collection for further chemical risk assessment. toxicants rating works is now rather extensively implemented in China. It consists of two parts, ie., rating of the hazard level of the exposed toxicant and that of the toxicant's profession. In the first part, the rating are based on six criteria, ie., acute toxicity, incidence of acute poisoning, prevalence of chronic poisoning, consequence of chronic poisoning, carcinogenecity and MAC level. Four hazardous levels are to be classified as extreme, high, medium, mild. In the second part. three determinants as weighted coefficients are taken into account, ie., toxicant's hazard level. exposure time and folds of MAC surpassing. Eventually, the index of classification C by which the work with toxic hazard can be classified is able to be calculated and assessed. Several comments were discussed and new recommendations were demonstrated.

• 환경위생공학
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• 제20권3호
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• pp.17-26
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• 2005

Many researches were focused on the data which obtained from chemical bulk analysis. It is difficult to evaluate source contribution by wet type chemical bulk analysis. In this study, we have reviewed the characterization of individual particle for source identification. We analyzed by SEM/EDX methods. We have obtained average geometric particle diameter measured by optical diameter which were resulted from SEM/EDX image scan, representative physical diameter of individual particle was $3.38\;{\mu}m\;in\;A,\;3.67\;{\mu}m\;in\;B$. In the result of image analysis at each spots particles, both samples non-sphere shapes, C-rich particles. In consequence of chemical analysis of individual particle, each sampling sites some elements.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제6권2호
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• pp.138-143
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• 2006

In this paper, we have presented a Sequential Agglomerative Hierarchical Nested (SAHN) algorithm-based data clustering method in fuzzy inference system to achieve optimal performance of fuzzy model. SAHN-based algorithm is used to give possible range of number of clusters with cluster centers for the system identification. The axes of membership functions of this fuzzy model are optimized by using cluster centers obtained from clustering method and the consequence parameters of the fuzzy model are identified by standard least square method. Finally, in this paper, we have observed our model's output performance using the Box and Jenkins's gas furnace data and Sugeno's non-linear process data.

• 한국환경과학회지
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• 제18권11호
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• pp.1291-1297
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• 2009

The purpose of this study was to establish structural bone noise analysing method for apartments building floor with Structural-Acoustic coupling analysis. Nowadays, noise through floor is recognized as important problem with the consequence that noise isolation technique is studied in the various fields of industry. From among noise factors, resonance sound is main reason for floor's solid noise. therefore, In this study, evaluation method for composite material slab is established and that a case study is suggested with it.

• The Korean Journal of Pain
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• 제24권2호
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• pp.112-114
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• 2011

Due to its complex pathophysiology and wide spectrum of clinical manifestations, the diagnosis of CRPS is often missed in the early stage by primary care physicians. After being treated by a primary care physician for 5 months for chronic cellulitis, a 16-year-old girl was referred to our hospital with features of type-1 CRPS of the right upper extremity. Inability to diagnose early caused prolonged suffering to the girl with all the consequence of CRPS. The patient responded well with marked functional recovery from multimodal therapy. Ability to distinguish CRPS from other pain conditions, referral for specialty care at the appropriate time and full awareness of this condition and its clinical features among various healthcare professionals are essential in reducing patient suffering and stopping its progression towards difficult-to-treat situations.

• 산업경영시스템학회지
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• 제13권21호
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• pp.29-41
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• 1990

An assessment of risk in industrial and urban environments is essential in the prevention of accident and in the analysis of situations which are hazardous to public health and safety. The risk imposed by a particular hazard increases with the likelihood of occurence of the event, the exposure and the possible consequence of that event. In a traditional approach, the calculation of a quantitative value of risk is usually based on an assignment of numerical values of each of the risk factors. Then the product of the values of likelihood, exposure and consequences called risk score is derived. However vagueness and imprecision in mathematical quantification of risk are equated with fuzziness rather than randomness. In this paper, a fuzzy set theoretic approach to risk analysis is proposed as an alternative to the techniques currently used in the area of systems safety. Then the concept of risk evaluation using linguistic representation of the likelihood, exposure and consequences is introduced. A risk assessment model using approximate reasoning technique based on fuzzy logic is presented to drive fuzzy values of risk and numerical example for risk analysis is also presented to illustrate the results.

• Clinical and Experimental Pediatrics
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• 제55권5호
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• pp.153-158
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• 2012

Food allergy is an important public health problem affecting 5% of infants and children in Korea. Food allergy is defined as an immune response triggered by food proteins. Food allergy is highly associated with atopic dermatitis and is one of the most common triggers of potentially fatal anaphylaxis in the community. Sensitization to food allergens can occur in the gastrointestinal tract (class 1 food allergy) or as a consequence of cross reactivity to structurally homologous inhalant allergens (class 2 food allergy). Allergenicity of food is largely determined by structural aspects, including cross-reactivity and reduced or enhanced allergenicity with cooking that convey allergenic characteristics to food. Management of food allergy currently focuses on dietary avoidance of the offending foods, prompt recognition and treatment of allergic reactions, and nutritional support. This review includes definitions and examines the prevalence and management of food allergies and the characteristics of food allergens.

• 한국문헌정보학회지
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• 제31권2호
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• pp.7-33
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• 1997

직무만족은 개인생활에서는 신체적인 건강은 물론 정신적인 건강에도 좋은 영향을 끼치며 조직에서는 생산성 향상과 직무성과에도 많은 영향을 끼친다. 따라서 이 연구는 우리나라 대학도서관에 근무하고 있는 사서의 직무만족 수준을 조사하여 도서관장이나 대학당국 더 나아가서는 정부당국이 대학도서관 사서에 대한 욕구를 이해하도록 하고, 직무만족 향상에 노력함으로써 그 성과로서 대학도서관 인사정책 수립과 대학도서관 발전에 도움이 되고자 함이다.

• 한국병원경영학회지
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• 제6권1호
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• pp.85-106
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• 2001

Since physical damages caused by passive smoking had been widely recognized, the Korea parliament enacted the National Health Promotion Law on September, 1995. The law specified nonsmoking areas in all public facilities, including hospitals. But this law is not strictly enforced. The benefits of a nonsmoking policy can not be expected by the public. Even though hospitals should preserve a smoke-free-environment, most of hospitals are not under full controls against smoking. The purpose of this study is to identify factors related to smoking in general hospitals. Field study and surveys were simultaneously performed at study hospitals in Busan. 9 of 24 general hospitals were selected and survey was performed for 10 days by investigators during January of 2000. Nine hospitals had nonsmoking regulations, but only 8 hospitals had designated nonsmoking areas. Two hospitals among those hospitals had a nonsmoking committee. Patients' smoking rate was 35.0%, while hospital employees' smoking rate was 22.5%. The smoking rates of physicians, nurses, administrators and medical technicians were 45.38%, 0.85%, 31.73% and 40.70%, respectively. In the question of the severity of damages caused by passive smoke, only 29.2% of the smoking group considered smoking as a serious health risk, while 69.4% of non-smoking group did. Christian employee showed lower smoking rate compared to other employee did. Even though physicians should educate patients and other professions about smoking, physicians' smoking rate (45.4%) was higher than other professions. As a consequence, this study insists that general hospitals should enhance their nonsmoking policy and implement any practical policy for smoking free hospital environment.