• 한국화재소방학회논문지
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• 제28권3호
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• pp.29-33
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• 2014

FDS를 사용하여 대규모 클린룸에서의 화재에 대한 시뮬레이션을 수행하였다. 먼저 격자크기를 검토하여 크기가 $0.5{\times}0.5{\times}0.2m^3$인 격자를 사용하였다. 화재가 발생했을 때 온도와 가시거리, 일산화탄소의 성능위주설계 인명안전기준에 따라 안전을 확인하기 위하여 3개의 대규모 클린룸에서의 화재를 대상으로 하였다. 스프링클러가 작동하지 않는 경우에도 클린룸 모두 온도가 기준보다 낮아 안전함을 확인하였다. 또한 화재로 인한 가시거리의 감소와 일산화탄소농도도 무시할 수 있었다.

• 가정과삶의질연구
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• 제27권4호
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• pp.55-66
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• 2009

Nearly a half of the accidents the old people had take place in home. Home safety will be more important than ever in rapidly increasing old aged in Korea. The purpose of this paper is to search the general characteristics of domestic accidents related to living environment of the old people experienced. The number of 248 respondents who had experienced of housing related accidents since recent 10 years were selected from 500 interviews with 65 years old and over during April 4th-26th, 2008. About a half of respondents had experienced home accidents. The entrance is the most common places the home accidents occurred, followed by bathrooms and stairs. flooring materials and raised floors are the most dangerous spots. Both places and dangerous objects are related each other. The place is also related to the type of dwelling. Slipping and tripping over most frequently happen in home accidents. It is related to the place like slipping in a bathroom or stairs, and tripping over in entrances. Mostly, legs and arms are injured by the home accidents. A safe home facilitates the old to live healthy and independent in their own places. A safe home for the old is a kind of new issues in Korea. Related policies and researches are about to sprout.

• 한국품질경영학회:학술대회논문집
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• 한국품질경영학회 2006년도 추계 학술대회
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• pp.321-326
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• 2006

The danger of self-ignition of single base propellants will increase with time. Therefore, a good prediction of the safe storage time is very important In order to determine the remaining shelf1ife of the propellants, the content of stabilizer is determined. The propellants stored under normal storage conditions about 10 to 18 years were investigated and accelerated aging test was carried out by storing propellant sample at higher temperature. Finally, we analyzed the results by various methods in order to show the best way to predict the realistic shelflife. The safe storage life of the propellants will be 24 years, at least 15 years. In case of applying Arrhenius's law, using the reaction rate constant at $28^{\circ}C$ to $30^{\circ}C$ to predict the shelflife by accelerated aging test is reasonable for a good prediction.

• 한국산학기술학회논문지
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• 제9권5호
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• pp.1201-1209
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• 2008

서울에는 지상 60층이 넘는 초고층 건물과 시하 8층 이상의 초심층 건축물. 지하철과 상가, 백화점, 호텔, 전시장등이 연결된 대규모 복합유통시설 지역 등이 있다. 이런 지역이나 시설에서 화재와 같은 재난사고가 발생시 진압작전을 위해 투입된 소방관의 위치를 제대로 파악할 수 없으면 투입된 소방관의 안전은 물론 효율적인 지휘통제가 제한되어 결국 더 많은 자체 피해와 더불어 화재 진압 및 시민구조에 제한을 받을 수밖에 없다. 이러한 대형재난에 유비쿼터스 기술을 활용하여 투입한 소방력의 효율적인 운영과 과학적인 진압작전을 구사하여 시민의 생명과 재산을 최대한 보호할 수 있는 소방대응지원 시스템 구축방안을 제시하였다.

• Journal of Chest Surgery
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• 제29권10호
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• pp.1152-1156
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• 1996

총 대퇴동맥 거대동맥류는 드문 질환이며, 수술 시기를 놓치면 하지 절단을 초래하거나 사망할수도 있기 때문에 적절한 시기에 반드시 수술적 치료를 하여야 한다. 환자는 72세 남자로 입원 20일 전부터 생긴, 좌측 서혜부 박동성 종괴를 주소로 입원하였다 전산화 단층 촬영과 디 지탈 감쇄조영술로 총 대퇴동맥 거대동맥류를 진단하고 응급수술을 시행하였다. 수술은 동맥류를 절제하고 표재성 및 심부 대퇴동맥을 PTFE (Gore-tex) 인조혈관을 이용하여 연결하였다. 동맥류 원인은 병리 조직검사상 동맥 경화성으로 밝혀졌다.

• 의료법학
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• 제14권1호
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• pp.11-36
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• 2013

Korea has been recognized as a safe country about the substance abuse, but now is not safe country because there are over 10 thousand drug related offenses in a year since 1999. Seventy percent of them are drug abusers, so Korea government must have stronger political strategies about the prevention and the treatment of the drug abuse. Till now Korea government has focused on the imprisonment rather than the treatment for the drug abusers. So the relapse rates are over 40% among the incarcerated drug abusers. Now we need more treatment strategies and development of treatment methods to decrease the relapse rates. Substance abuse is a brain disease with a chronic relapsing nature and has a bio-psycho-social etiology. So treatment process has three steps, motivation enhancement treatment for substance-free lifestyle, rehabilitation aimed at maximizing multiple aspects of life functioning, and relapse prevention. To improving the treatment strategies the Government must execute the national survey about the substance abuse, enforce a law to operate the drug court and to sentence a treatment order with a probation, and establish a national addiction institute for study and education about the substance abuse.

• 한국주거학회논문집
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• 제24권1호
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• pp.69-78
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• 2013

Recently, due to the casualties and property damage caused by disasters, it became important to evacuate the victims to a safe place and come up with a space for them to inhabit for a certain period of time. Therefore, this study aims to design and develop a temporary housing system that would quickly provide a safe and comfortable living space until the displaced persons can return to a normal life again when a disaster occurs. As a result, a system of a BIM-based modular housing, a modular town through automatic placement, and a method to calculate the capacity and the total cost was developed. As this system provides the temporary housing facilities and the site in 3D, it can be utilized as a training material on a normal basis, as well as the first case material for rapid decision making when there is a disaster.

• Nuclear Medicine and Molecular Imaging
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• 제43권4호
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• pp.259-279
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• 2009

Radioiodine ablation therapy has been considered to be a standard treatment for patient with differentiated thyroid cancer after total thyroidectomy. Patients may need to be hospitalized to reduce radiation exposure of other people and relatives from radioactive patients receiving radioiodine therapy. Medical staffs, nursing staffs and technologists sometimes hesitate to contact patients in radioiodine therapy ward. The purpose of this paper is to introduce radiation dosimetry, estimate radiation dose from patients and emphasize the safety of radiation exposure from patients treated with high dose radioiodine in therapy ward. The major component of radiation dose from patient is external exposure. However external radiation dose from these patients treated with typical therapeutic dose of 4 to 8 GBq have a very low risk of cancer induction compared with other various risks occurring in daily life. The typical annual radiation dose without shielding received by patient is estimated to be 5 to 10 mSv, which is comparable with 100 to 200 times effective dose received by chest PA examination. Therefore, when we should keep in mind the general principle of radiation protection, the risks of radiation exposure from patients are low and the medical personnel are considered to be safe from radiation exposure.

• 한국자동차공학회논문집
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• 제21권5호
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• pp.104-112
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• 2013

This study investigates the structural analysis result with vibration and fatigue on 3 kinds of bicycle saddle models. When the static load applies on the upper plane of model, maximum stress becomes within the allowable stress in case of model 1. As the value of Stress or deformation becomes lower on the order of model types 1, 2 and 3, these models become more stabilized or safer at durability in this order. On the vibration analysis, model type 1 has the maximum stress or deformation more than 5 times by comparing with model type 1 or 2. Model type 1 becomes most excellent on vibration durability. As maximum displacement due to vibration happens in case of model type 3, it becomes unstabilized. But the stresses of model types 1, 2 and 3 become within the allowable stress and these models are considered to be safe. At the status of the severest fatigue load, model type 3 becomes safer than model type 1 or 2. This study result is applied with the design of safe bicycle saddle and it can be useful to improve the durability by predicting prevention against the deformation due to its vibration and fatigue.

• 한국기계가공학회지
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• 제10권6호
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• pp.63-69
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• 2011

This study analyzes stress, fatigue and vibration on main rotor and body of helicopter. The maximum stress is shown on adjoint part between body and main rotor at the lower position of main rotor. As the maximum displacement amplitude is happened at 4000Hz, there is no resonance and the state of helicopter becomes safe at hovering without the abnormal air current and the disabled rotor. Among the cases of nonuniform fatigue loads, 'SAE bracket history' with the severest change of load becomes most unstable but 'Sample history' becomes most stable. In case of 'Sample History' with the average stress of 0MPa to $-10^5MPa$ and the amplitude stress of 0MPa to $8.539{\times}10^5MPa$, the possibility of maximum damage becomes 3%. This stress state can be shown with 5 times more than the damage possibility of 'SAE bracket history' or 'SAE transmission'. The structural result of this study by using the analysis of vibration and fatigue can be effectively utilized for safe and durable design of helicopter.