• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.1074-1075
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• 2015

본 구명조끼는 해양 사고시 구조되기까지의 시간을 단축시키며 구조되기까지의 생존율을 높여 주기 위해 연구 하였다. 본 구명조끼는 구명조끼와 LED를 결합하여 야간 사고 시 지속적인 구조요청을 가능하게 한다. 또한 구명조끼 내부에 발열체를 내장 시킴 으로서 해양사고 시 사망원인의 1순위인 저체온증이 오기까지의 시간을 연장시켜 구조되기까지의 생존율을 높여 준다.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.41 no.9
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• pp.740-746
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• 2013

Design with crashworthiness concept has been emphasized for almost aircraft and motor vehicles. However, crashes accompanied serious injury and death have been continuously occurred, and will be occurred subsequently. What was worse, it is a well-known fact that there were a good many crashes classified as survivable accidents in which fatal injuries were reported. But we cannot say that fatal injuries were inevitable consequences of those crashes. If crashworthy design for seat, restraint systems, and cabin strength were adequate or right, survivability in a crash event could be maximized greatly. To substantiate the right crashworthiness, we must thoroughly understand the characteristics of human tolerance under abrupt acceleration change, and the cabin design should be combined with proper use of energy absorbing technologies that reduce accelerations experienced by the occupants. In this paper, the emphasis on the human tolerance under abrupt accelerations as well as the necessity of change in design requirements for crash environment will be stressed to widen the belt of consensus for the right crashworthy design.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.1442-1445
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• 2010

오늘날 통신기술의 급속한 발달에 따라 자동화 및 무인화 서비스를 제공하는 지능형 선박에 대한 연구, 개발이 활발이 진행 되고 있다. 이에 선박 내 각 장비들의 기능이 고도화 됨으로써, 선박네트워크 환경에서 이들 장비를 효율적으로 제어할 수 있는 연구가 필요한 실정이다. 지능형 선박의 백본 네트워크는 네트워크 구축 환경의 제약과 자동화 및 무인화 특징을 가진다는 점에서, 선박의 사고로 인한 네트워크의 결손이 큰 재해를 가져올 수 있으므로 고수준의 생존성이 요구된다. 따라서 본 논문에서는 고생존 선박 통신망을 고려하여 네트워크 통신 장비들이 이중화 경로를 통해 서로 연결된 이중화 네트워크 토폴로지를 최소의 비용으로 설계하였다. 설계한 이중화 네트워크 토폴로지를 이론적 분석 및 ILP(Integer Linear Programming)를 통해 실험한 결과, 네트워크 생존성에 우수한 성능을 나타내는 것을 확인할 수 있었다.

• Review of KIISC
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• v.11 no.1
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• pp.1-8
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• 2001

초고속국가망을 이용하는 기관은 국가 및 지방자치단체 등 공공기관이 대부분을로 정보시스템에 보안사고 발생시 정보 유출, 파괴, 서비스 마비 등이 발생하여 해당기관의 생존뿐만 아니라 나아가 국가의 안위까지도 위협될 수 있음에 따라 초고속망 안전·보안이 주요 이슈로 등장하고 있다. 이에 따라 본 논문은 초고속국가망 이용기관 측면에서, 체계적인 보안관리를 가능케 하는 정보기술 보안관리 일반모델을 소개하고 통신사업자 측면에서, 비상시에도 안정적으로 초고속국가망 서비스를 제공하는 방안에 대해서도 소개한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.726-729
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• 2015

정보통신기술의 발달로 사내 주요 정보들이 보다 쉽고 다양한 경로로 외부로 유출이 가능해짐에 따라 산업 기술 유출로 인한 보안사고가 증가하고 있다. 이러한 보안사고는 문서 유출 경로에 따라 악의적인 공격자가 외부에서 침입하여 유출된 경우와 내부정보 접근이 용이한 인력(전 현직 임직원 및 협력업체 직원)에 의해 유출된 경우로 크게 2가지 형태로 분류될 수 있으며, 유출된 사내 주요 정보들은 기업의 막대한 피해를 가져오게 된다. 기업 측면에서도 사내 보안 관리는 더 이상 선택이 아닌 기업의 생존을 위한 필수 요소임을 인지해야 하며 기업의 보안 관리 수준의 향상이 필요하다. 따라서 본 연구에서는 필수적인 사내 보안 관리 방안의 가이드라인을 제시함으로써 기업의 사내 보안 수준을 향상시키고자 한다.

• Journal of Animal Science and Technology
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• v.50 no.1
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• pp.33-44
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• 2008

The purpose of this study was to estimate the genetic parameters and trend of Landrace and Yorkshire pigs, which were raised on private farms from 1999 to 2005 and tested for their reproductive performance by the Korea Animal Improvement Association. Prior to analysis, records without pedigree or having value with larger than±3×standard deviation for the Total number of born were excluded. The effects of breed and environmental factors were estimated with least square method(Harvey, 1979), and estimation of breeding values and genetic parameters were performed on the data of 1’st litter only with GIBBSF90(Misztal, 2001) which was programmed according to Gibbs Sampling method based on Bayesian Inference by Gianola and Fernando(1986), Jensen(1994) and others. Gibbs sampling was performed 50,000 times for each parameter, and the first 5000 samples were regarded as those in burn-in period and thus, excluded for post hoc analysis. Total number of born and total number of accident were statistically significant(p<0.01) for the breed, farrowing year, farrowing season and parity effects, and the number born alive at birth was statistically significantp<(0.01) for the breed, farrowing year, farrowing season and parity effects. No particular trend was observed in the genetic and phenotypic improvement of the total number of born and number born alive at birth before 2001, when the piglet registration system started, but the tendencies of increasing for the total number of born and number born alive and decreasing for the total number of accident were observed since 2001. Somewhat higher heritability estimates of our study seems to be attributed to the situations that first parity records with poor farrowing performances were used in the analyses and it was impossible to obtain accurate reproductive performance due to the absence of criteria for record keeping at the level of individual farms.

• Journal of the Korean Society of Marine Environment & Safety
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• v.21 no.6
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• pp.689-695
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• 2015

The offshore plant crews that were commissioned in the commercial startup phase boarded the offshore plant in two shifts until the end of the project. The crews who were hired by the owner side stayed in the original offshore plant during the project. However, most of the offshore plant commissioned members who were dispatched from the shipyard were accommodated in the offshore accommodation barge. For this reason, they were exposed to many accidents since there are a lot of people staying in a small space. This study suggested a method for improving survival rate at offshore accommodation barge in terms of life safety. It is assumed that the fire accident among unfortunate events which take place in the offshore accommodation barge mainly occurred. So, this study analyzed the safety evacuation for offshore plant employees using fire simulation model based on both domestic and international law criteria. In particular, When fire occurs in the offshore accommodation barge, the periodically well trained crews are followed safety evacuation procedure. whereas many employees who have different background such as various occupations, cultural differences, races and nationality can be commissioned with improper evacuation behaviors. As a result, the risk will be greater than normal situation due to these inappropriate behaviors. Therefore, This study analyzed the Required Safe Escape Time (RSET) and Available Safe Escape Time (ASET). Also it was suggested the improvement of structure design and additional arrangement of safety equipment to improve the survival rate of the residents in offshore accommodation barge.

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.374-374
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• 2015

최근 이상기후로 인한 홍수, 산사태 등 자연재난 및 각종 사건사고 등 사회적 재난에 따른 인명 피해가 매년 증가하고 있는 추세이다. 특히, 재난에 대한 노출도가 높고 재난이 빈번하게 발생하는 일본, 미국과 달리 높지 않은 우리나라의 경우 실제 재난상황에 직면할 경우 상대적으로 낮은 생존율을 보이고 있으며 이러한 대표적인 사례가 바로 올해 발생한 세월호 침몰사고에 따른 인명 피해를 들 수 있다. 이에 사후약방문식으로 많은 전문가들이 체계적인 대응 매뉴얼 부재, 정부의 일사분란한 대응의 부족을 언급하고 있는 실정이나 정작 재난에 직면한 일반 국민들이 평상시에도 이해하기도 힘든 매뉴얼의 대응수칙을 재난상황에 따를 수 있을 것이라고 생각하는 것은 "재난에서 재난을 배울 수 없는" 우리나라의 현주소 그 자체를 보여주는 것이라 할 수 있다. 이와 같은 문제점을 해결하기 위해서는 재난 발생시 신속한 대응이 가능한 수준의 직관적 재난대처 요령을 국민들에게 알려주는 것이 무엇보다 요구된다 할 수 있다.

• Journal of the Korean Society of Radiology
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• v.6 no.2
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• pp.107-114
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• 2012

The study was conducted in patients who had undergone angiography and arterial embolization after being diagnosed with arterial bleeding among those registered with severe trauma at the admission to the department of emergency due to accidents. In the study, comparison was done between the survived group and the nonsurvived group to investigate the usefulness and the optimal performance timing of angiography and embolization as the survival-affecting factors and treatment methods for patients. The study was performed as a retrospective analysis in 45 patients who had undergone angiography and arterial embolization among those categorized as severe trauma patients from the emergency department of H hospital located in Gyeonggi-do from July, 2006 until December, 2010. The Injury Severity Score (ISS), the Revised Trauma Score (RTS), the hematocrit were the main outcome measurements. Arterial embolization was technically successful in all cases, transcatheter arterial embolization of arterial bleeding is a useful procedure in lowering the mortality and complication in severe trauma patients. and RTS, ISS, Hematocrit were the predictable early mortality factors. So bad vital sign patients must be progressed rapidly.

• Radiation Oncology Journal
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• v.13 no.4
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• pp.321-330
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• 1995

Purpose : To evaluate whether the early pulmonary irradiation can prevent or decrease the pulmonary damage and contribute to improve ultimate survival in paraquat lung. Materials and Methods : From Jun. 1987 to Aug. 1993, thirty patients with paraquat poisoning were evaluated. Fourteen of these patients were received pulmonary irradiation(RT). All of the patients were managed with aggressive supportive treatment such as gastric lavage, forced diuresis, antioxidant agents and antifibrosis agents. Ingested amounts of paraquat were estimated into three groups(A : minimal 50cc). Pulmonary irradiation was started within 24 hours after admission(from day 1 to day 11 after ingestion of paraquat). Both whole lungs were irradiated with AP/PA parallel opposing fields using Co-60 teletherapy machine. A total of 10Gy(2Gy/fr. x 5days) was delivered without correction of lung density. Results : In group A, all patients were alive regardless of pulmonary irradiation and in group C, all of the patients were died due to multi-organ failure, especially pulmonary fibrosis regardless of pulmonary irradiation. However, in group B, six of 7 patients($86{\%}$) with no RT were died due to respiratory failure, but 4 of 8 patients with RT were alive and 4 of 5 patients who were received pulmonary irradiation within 4 days after ingestion of paraquat were all alive though radiological pulmonary change. One patient who refused RT after 2Gy died due to pulmonary fibrosis. All 3 patients who were received pulmonary irradiation after 4 days after ingestion were died due to pulmonary fibrosis in spite of recovery from renal and hepatic toxicity Conclusion : It is difficult to find out the effect of pulmonary irradiation on the course of the paraquat lung because the precise plasma and urine paraquat concentration were not available between control and irradiation groups. But early pulmonary irradiation within 4 days after paraquat poisoning with aggresive supportive treatment appears to decrease Pulmonary toxicity and contribute survival in patients with mouthful ingestion of paraquat who are destined to have reversible renal and hepatic damage but irreversible pulmonary toxicity.