• Human Ecology Research
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• 제54권1호
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• pp.69-81
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• 2016

Consumer anxiety about food safety is increasing, and the ability to make an accurate assessment is inadequate due to the lack of food safety information. This research focuses on relations among main variables, such as food hazard awareness, food apprehension, food safety information awareness, and food safety management system evaluation. In addition, to the moderating effects of food safety information awareness between food hazards awareness, food apprehension, and food safety management system evaluation. First, food hazards awareness and apprehension was slightly higher than the average level, also there was a significant difference in food hazard apprehension according to food hazard awareness. However, the level of food safety information was not high, meaning consumers were not as well informed as expected. We divided food safety management system evaluation into awareness and practice, subsequently, the results of both were at a low level. Food safety information awareness' moderating effect was also confirmed. Consumer organizations and the government need to provide specific and correct information to Korean consumers, that also implement a wide range of consumer education related policies.

• 한국안전학회지
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• 제32권1호
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• pp.98-107
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• 2017

This study is aimed to design for qualification structure and develop the subjects for examination of the school safety manager qualifications. For the study purpose, job analysis and meetings with experts were performed for extract contents such as task range, criteria of examination, subjects of examination and examination methods, etc. The first step, duties and tasks of the school safety manager were figured out through revised job analysis data of the school safety manager developed before. On the second step, job model was established and developed job specification including importance, difficulty and frequency of each task. On the third step, task specification was developed, and Knowledge-Skill Matrix was the most important thing on examination were completed. The fourth step was the selection of examination subject using task-subject matrix and 6 subjects such as The Principles of Safety, Understanding of the School Safety Manual, Law Related on the School Safety, Introduction to Education, Understanding and Dealing with Type of the School Safety, Establishment of the School Safety Plan were derived from previous procedure. The fifth step was development of guidelines for design examination of each subject. The last step was development for skills education program.

• 분석과학
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• 제25권1호
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• pp.76-82
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• 2012

본 연구는 혈청 중 두타스테라이드의 확인과 정량을 위하여 LC-ESI-MS/MS를 이용한 신뢰성 있는 분석법을 개발하고, 분석방법의 타당도를 검증하고자 수행하였다. 내부표준물질인 베클로메타손을 첨가한 혈청을 methyl tert-butyl ether (MTBE)를 사용하여 액체상추출법(liquid-liquid extraction, LLE)으로 추출하였다. LC-MS/MS의 양이온 모드에서 MRM(multiple reaction monitoring)방법으로 확인한 두타스테라이드와 베클로메타손의 mass transition은 각각 m/z 529.6${\rightarrow}$461.5, m/z 409.3${\rightarrow}$391.2 이었으며, 머무름 시간은 각각 6.45분, 5.46분이었다. 검량선은 0.5~30.0 ng/mL의 농도 범위에서 $R^2$=0.9999의 높은 직선성을 나타내었으며, 정량한계와 회수율은 각각 0.5 ng/mL와 66~72% 이었다. 일내에 대한 정밀도는 3.5~5.5%, 정확도는 85.7~89.9% 범위이었으며, 연속 3일간 수행한 일간 정밀도는 4.2~5.8%, 정확도는 90.8~95.8% 이었다.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제22권5호
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• pp.441-446
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• 2019

Purpose: Safety pin ingestion is common in some regions of the world and may lead to severe morbidity and mortality. The aim of this study was to present some practical suggestions for ingested safety pins using an accompanying algorithm, presented for the first time in the literature to the best of our knowledge. Methods: Twenty children with ingested safety pins during a 4-year period were retrospectively included in the study. Results: Median age of patients was 9.5 months (interquartile range, 6.3-14 months), and 70% were girls. On endoscopic examination, safety pins were observed in the stomach (25%), duodenal bulb (20%), upper esophagus (15%), middle esophagus (10%), and second part of the duodenum (10%) but were not observed in 20% of the cases. Safety pins were removed using endoscopy in 15 cases (75%). In four cases (20%), no safety pin was observed on endoscopic examination. In one case (5%) involving a 6-month-old infant, the safety pin could not be removed although it was observed using endoscopy. No surgical intervention was needed for any patient. No complications such as perforation or deaths developed, except for erosions, due to the foreign body removal procedure. Conclusion: Safety pins are easily removed endoscopically. The best option is to remove the safety pin using endoscopy while it is still in the esophagus and stomach. For this reason, endoscopic procedures should be performed as soon as possible in children who have ingested safety pins.

• Nuclear Engineering and Technology
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• 제54권9호
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• pp.3422-3428
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• 2022

The prompt gamma imaging (PGI) technique is considered as one of the most promising approaches to estimate the range of proton beam in the patient and unlock the full potential of proton therapy. In the PGI technique, a dedicated algorithm is required to estimate the range of the proton beam from the prompt gamma (PG) distribution acquired by a PGI system. In the present study, a new range estimation algorithm was developed for a multi-slit prompt-gamma camera, one of PGI systems, to estimate the range of proton beam with high accuracy. The performance of the developed algorithm was evaluated by Monte Carlo simulations for various beam/phantom combinations. Our results generally show that the developed algorithm is very robust, showing very high accuracy and precision for all the cases considered in the present study. The range estimation accuracy of the developed algorithm was 0.5-1.7 mm, which is approximately 1% of beam range, for 1×10⁹ protons. Even for the typical number of protons for a spot (1×10⁸), the range estimation accuracy of the developed algorithm was 2.1-4.6 mm and smaller than the range uncertainties and typical safety margin, while that of the existing algorithm was 2.5-9.6 mm.

• 한국멀티미디어학회논문지
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• 제20권8호
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• pp.1387-1394
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• 2017

As rate in an elderly population and expanding their range of activity rapidly increase, the demographics of the elderly population on a use of transportation also rise. Elderly pedestrians often find it difficult to react promptly to the traffic accidents as they are less perceptive of the dangers present under the situation. More than half of the elderly traffic accidents are elderly pedestrian accidents in road. Therefore, we design and implement smart safety hat for safety of elderly pedestrian. The smart safety hat binds stripe-shaped LED around a hat in order for a driver to perceive pedestrian easy and quickly. Features of smart safety hat include controlling the number of LEDs by using a light sensor and warning through vibration using a sound sensor. Also, we used Bluetooth to communicate with the smartphone to enable user customization of the light and numbers of LEDs.

• 분석과학
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• 제24권5호
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• pp.345-351
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• 2011

본 연구는 LC-ESI-MS/MS를 이용하여 혈청 중의 피나스테라이드의 분석법을 확립하고, 밸리데이션을 통하여 분석방법의 타당도를 검증하였다. 혈청에 내부표준물질로 베클로메타손을 첨가한 후 methyl tert-butyl ether (MTBE)을 사용하여 액체상추출법(liquid-liquid extraction, LLE)으로 전처리하였다. LC-MS/MS의 양이온 모드에서 피나스테라이드와 베클로메타손의 MRM (multiple reaction monitoring) mass transition은 각각 m/z 373.2${\rightarrow}$305.2, m/z 409.3${\rightarrow}$391.2 이었으며, 머무름 시간은 각각 5.81분, 5.46분이었다. 피나스테라이드의 정량한계는 0.1 ng/mL로 나타났으며, 0.1~20.0 ng/mL의 농도 범위에서 검량선은 우수한 직선성($R^2$=0.9997)을 확인할 수 있었으며, 회수율은 80~83% 범위이었다. 피나스테라이드의 일내에 대한 정밀도는 6.3~10.6%, 정확도는 97.3~103.6% 범위이었으며, 연속 3일간 수행한 일간 정밀도는 0.8~5.2%, 정확도는 99.8~102.5%로 나타났다.

• 해양환경안전학회지
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• 제26권4호
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• pp.317-326
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• 2020

본 연구에서는 LNG 추진선에서 배관의 파손으로 천연가스가 누출되었을 때 누출공의 크기별 플래시 화재, 과압, 복사열에 따른 피해범위를 ALOHA(Areal Location of Hazardous Atmospheres)를 이용하여 산출했다. 그리고 민감도 분석을 위해 환경 변수(풍속, 대기온도, 대기 안정도)와 공정 변수(배관 압력, 배관 길이)로 구분하여 다양한 시나리오별 피해영향범위를 분석했다. 그 결과 환경 변수에 따른 피해범위는 플래시 화재에 의한 피해범위가 가장 컸으며 다음으로 과압, 복사열 순서로 큰 피해범위를 나타냈다. 그리고 공정 변수에 따른 피해범위를 산출한 결과 배관의 압력과 길이, 누출공의 크기와 관계없이 플래시 화재에 의한 피해범위가 가장 컸으며, 환경 변수와 동일하게 과압, 복사열 순서로 높은 피해범위를 보였다. 또한 누출공의 크기가 클수록 환경 변수와 공정 변수가 피해범위에 큰 영향을 주었으며 제트 환재에 의한 피해범위는 환경 변수에 비해 공정 변수에 의한 피해범위가 더 큰 것을 알 수 있었다.

• 한국안전학회지
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• 제28권5호
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• pp.71-77
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• 2013

This Study aims at investigating actual condition on attending school road of children and analyzing empirically the characteristics of cognition and the influence of safety on school road. This study findings are as follows : 1) Walking alone to go to school is the highest rates among Commuting Mode, and Commuting distance to school is nearly doubles than range of school zone(300 m). 2) Among characteristics of urban spatial structure affecting on influence classify safety of school road, 'Commuting Distance' has been drawn to most influential variable. Especially, there are 4 types classified by commuting distance and it became obvious that the longer the distance, the lower the safety score(under 127 m=76.9 points, Over 451 m=58.3 points). 3) As a result of investigating the influence of Safety on attending school road, Vehicle commuting speed urder 127 m as internal of school zone, and Walking and crossing convenience over 451 m as external of school zone have a lot of influence on safety cognition on school road. Therefore Safety on school road should be considering the commuting distance to school among surrounding characteristics, needed for improvement plan and program based on real safety cognition of children.

• 교육녹색환경연구
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• 제13권3호
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• pp.1-14
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• 2014

This research aims to orientation for new ways to improve school safety environment composition : The first study was the survey of various literature and status on primary school safety has been established in residential developments in urban areas were investigated and analyzed. This study was constructed as follows : The first chapter of the study is composed with the purpose, contents and configuration of study, definitions of terms, and consists of a limitation of such studies. And in chapter 2, we define such concepts, the range of school safety incidents. In Chapter 3, the nation's school safety situation was investigated, And in the fourth chapter introduced the practice of foreign school safety plan, Chapter 5 was to provide direction for future school safety and accident prevention plan. Including 12 new elementary school in Dongbaek district and Dongtan New-Town 20 new elementary schools in the metropolitan area of New-City were examined for safety issues, such as the environment of school, school zones, school premises form compositions and its outdoor and indoor facilities. This study was aimed at some of the nation's metropolitan New Town Elementary School. Therefore, there is a limit to this generalization. Also planned construction safety plan elements for the indoor facilities are further studies are needed for this hayeoteumeuro excluded. In addition, the architectural planning elements of the school safety needs additional studies is excluded.