• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2004년도 춘계학술대회
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• pp.271-276
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• 2004

The risk assessment model is an important subsystem for effective establishment and operation of EMS (environment management system). In case of poor risk assessment long-term and large-scale failure expense might be brought. Managing policy, target and other indices based on risk assessment can guarantee successful EMS. In this paper, we aim at comparative analysis of various risk methods and propose an alternative risk assessment model for EMS.

• 무역학회지
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• 제44권3호
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• pp.191-202
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• 2019

Despite innovative efforts to accommodate changes in the payment environment, the new types of settlement risks that are emerging require preemptive and proactive responses. Therefore, Korea should complement and develop large-value funds payment system operation and risk management policies by introducing international standards and linking with advanced financial institutions. This study examines the major issues such as the development process and characteristics of the large-value funds payment system of the two countries, the operation policy of the central bank, and the risk management policy by comparing the US Fedwire with the Korea Bok-Wire+. In addition, policy implications are suggested for efficient operation and development of Bok-Wire+.

• 한국산학기술학회논문지
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• 제13권7호
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• pp.3244-3251
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• 2012

대형 해양구조물의 건설과 운영에서 중요한 항목 중의 하나가 재해위험도를 분석하고 평가하는 것이다. 이에 본 연구에서는 수중터널의 건설과 운영 시에 발생할 수 있는 재해 위험요소를 도출하고 퍼지 AHP(Analytic Hierarchy Process) 방법으로 이러한 위험요소의 수준을 파악하고자 하였다. 재해 위험도로는 자연재해 위험도와 인적재해 위험도로 구분하고 이러한 위험도 항목들이 수중터널에 미치는 영향을 전문가 설문을 통하여 조사하였다. 조사된 전문가 설문결과 데이터를 퍼지 AHP 기법으로 분석하여 재해위험도를 각 위험요소별로 정량화하였다. 또한, 수중 터널과 교량, 해저터널, 침매터널의 재해위험도 수준을 분석하여 수중터널이 가지고 있는 고유의 재해위험도 수준을 평가하였다. 재해위험도에서는 쯔나미와 지진이 가장 위험도 인식수준이 높았고, 인적재해 위험도는 화재와 폭발의 위험도 인식이 높은 수준이었다. 또한, 수중터널은 침매터널에 비해서는 1.4배, 교량에 비해서는 3.2배 위험도 인식수준이 높은 것으로 조사되었다.

• 융합정보논문지
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• 제11권9호
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• pp.35-42
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• 2021

본 논문의 연구목적은 미정부가 추진하는 sUAS 안전성 정책을 검토하는 것이다. 그래서 본 논문에서는 sUAS 위험 요소와 함께 미 정부가 관심을 가지는 sUAS의 위험 요인들에 대해 살펴보았다. 아울러 위험 요소는 물리적인 요소와 비 물리적인 요소에 대해 분류하였고, FAA 재허가법에서 언급하는 조항들을 살펴보았다. 그 외 위험 시나리오는 비행운영 방해, 인프라 구조 피해, 시설 무단침입 등 FAA에서 관심을 가지는 대상 시나리오 항목을 중심으로 분석하였다. 물론 미 FAA가 추진하는 위험관리 원칙을 살펴보았다. 본 논문에서 연구방법은 국외 주요 저널 분석과 정책 분석으로부터 FAA의 sUAS 정책방향과 내용을 연구 검토하였다. 본 논문의 연구 결과에서는 FAA sUAS 안전성 위험관리 정책을 분석함으로써, 국내에 sUAS 안전성 위험관리 가이드 수립에 필요한 운영과 안전성 통합정책, 물리적인 위험관리 정책, 운영과 안전성 규정, 그리고 sUAS 정책과 기술 방향을 제시하였다. 본 연구의 기여도는 선도적인 미 sUAS 안전성 정책방향을 파악하는데 있고 이로부터 향후 국내 정책 방향 수립을 도출하는데 기초 자료로 활용될 수 있다. 향후 제시된 연구 결과를 바탕으로 세부 실행 방안 등을 도출하기 위한 정책 연구가 필요하다.

• 대한안전경영과학회지
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• 제16권4호
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• pp.1-9
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• 2014

The occupational health and safety accidents were continuously increased during handling, usage and manufacturing the chemical materials according to increase of small and medium sized enterprises in domestic industries. These accidents mainly resulted from insufficient occupational health and safety management and deteriorative facilities and focused on corresponding operation to minimize the damage of accidents after occurrence. But, it was required that we grasped the occurrence causes of occupational health and safety risk in handling, usage and manufacturing the chemical materials and develop the adequate corresponding operation and system according to the possible occurrence of occupational health and safety risk. This study deals with the development of risk assessment model to derive the risk and important risk of occupational health and safety and then help to construct the self-controlled occupational health and safety system for small and medium sized enterprises handling the chemical materials.

• 기본간호학회지
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• 제21권2호
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• pp.151-161
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• 2014

Purpose: The purpose of this study was to identify the risk factors that influence surgical site infections after surgery. Methods: This study was a retrospective research utilizing Electronic Medical Records. Data collection targeted 4,510 adult patients who had 8 different kinds of surgery (gastric surgery, colon surgery, laparoscopic cholecystectomy, hip & knee replacement, hysterectomy, cesarean section, cardiac surgery) in 4 medical care departments, at one general hospital between January 2006 and December 2011. Multivariate logistic regression analyses were used to identify the risk factors affecting surgical site infections after surgery. Results: Risk factors for increased surgical site infection following surgery were confirmed to be age (OR=1.59, p<.001), BMI (Body Mass Index)(OR=1.25, p=.034), year of operation (OR=2.45, p<.001), length of operation (OR=3.06, p<.001), ASA (American Society of Anesthesiology) score (OR=1.36, p=.025), classification of antibiotic used (OR=2.77, p<.001), duration of the prophylactic antibiotics use (OR=1.85, p<.001), and interaction between classification of antibiotic used and duration of the prophylactic antibiotics use (OR=1.90, p=.016). Conclusions: Results suggest that risk factors affecting surgical site infections should be monitored before surgery. The results of this study should contribute to establishing effective infection management measures and implementing surveillance systems for patients who have actual risk factors.

• 한국항해항만학회지
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• 제41권5호
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• pp.287-296
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• 2017

The Formal Safety Assessment (FSA) is a structured and systematic methodology developed by the IMO, aimed at assessing the risk of vessels and recommending the method to control intolerable risks, thereby enhancing maritime safety, including protection of life, health, the marine environment and property, by using risk analysis and cost-benefit assessment. While the FSA has mostly been applied to merchant vessels, it has rarely been applied to a DP vessel, which is one of the special purpose vessels in the offshore industry. Furthermore, most of the FSA has been conducted so far by using the Fault Tree Analysis tool, even though there are many other risk analysis tools. This study carried out the FSA for safe operation of DP vessels by using the Bayesian network, under which conditional probability was examined. This study determined the frequency and severity of DP LOP incidents reported to the IMCA from 2001 to 2010, and obtained the Risk Index by applying the Bayesian network. Then, the Risk Control Options (RCOs) were identified through an expert brainstorming and DP vessel simulations. This study recommends duplication of PRS, regardless of the DP class and PRS type and DP system specific training. Finally, this study verified that the Bayesian network and DP simulator can also serve as an effective tool for FSA implementation.

• Wind and Structures
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• 제37권4호
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• pp.275-287
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• 2023

Subgrade differential settlement of high-speed railways was a pivotal issue that could increase the risk of trains operation. The risk will be further increased when trains in the subsidence zone are affected by crosswinds. In this paper, the computational fluid dynamics (CFD) model and finite element (FE) model were established, and the data transmission interface of the two models was established by fluid-solid interaction (FSI) method to form a systematic crosswind-train-track-subgrade dynamic model. The risk of high-speed train encountering crosswind in settlement area was analyzed. The results showed that the aerodynamic force of the trains increased significantly with the increase in crosswind speed. The aerodynamic force of the trains could reach 125.14 kN, significantly increasing the risk of derailment and overturning. Considering the influence of crosswind, the risk of train operation could be greatly increased. The safety indices and the wheel-rail force both increased with the increase of the wind speed. For the high-speed train running at 350 km/h, the warning value of wind speed was 10.2 m /s under the condition of subgrade settlement with wavelength of 20 m and amplitude of 15 mm.

• 대한수의학회지
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• 제45권3호
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• pp.405-410
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• 2005

To analyze and identify selected risk factors for infectious bronchitis virus (IBV) infection in the growing and laying period of laying-hen flocks, a longitudinal field study was conducted with 27 commercial flocks reared in three provinces of Korea during the period from May 2003 to April 2004. Using monitored data for IBV infection status among study flocks we computed the multivariate odds ratios (ORs) and their corresponding confidence intervals (CIs), and population attributable risks (PARs). Multivariate logistic regression showed significant risk increments for: continuous entry of chick (OR=1.9, 95% CI, 0.7-69.1) and operation years of the layer house greater than or equal to 5 years (OR=3.2, 95%CI, 1.6-389.9). No significant interaction was found between variables. The PAR suggested that continuous entry of chick (PAR=32%) and ${\geq}5years$ of house operation (PAR=84%) had the highest impacts on IB presence in laying-hen flocks under study. Of the two significant factors, however, operation year of the layer house lacks an easy applicability in preventing IB control strategies, and the possibility of confounder cannot be ruled out.

• 터널과지하공간
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• 제25권1호
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• pp.107-114
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• 2015

본 연구에서는 CAES 저장 공동의 운영단계에서 발생할 가능성이 있는 리스크를 분석 및 평가하고, 가장 높은 리스크 수준을 가지고 있는 것으로 판명된 리스크에 대해서 화재 시나리오를 작성하였다. 운영단계에서의 리스크를 상위 리스크와 하위 리스크로 구분하였다. 상위 리스크는 '기술적 리스크', '시설 리스크', '자연재해 리스크'로 이루어져 있으며, 하위 리스크는 11개의 리스크 요인들로 구성되어 있다. 20인의 관련 분야 전문가에게 설문 조사를 실시하였으며, 설문 내용을 분석하기 위해서 ANP 모델을 적용하였다. 리스크 우선순위를 결정하기 위해서 ANP 분석 결과와 기 결정된 리스크 평가기준을 비교하였으며, 그 결과 '관리공동 내 화재 발생'이 위험도가 가장 높은 리스크로 선정되었다. '관리공동 내 화재 발생' 리스크가 미치는 영향을 평가하기 위하여 시나리오를 작성한 후 분석하였다. 3가지 종류의 시나리오를 고려하였으며, 시나리오를 분석하기 위해서 FDS 화재 해석 프로그램을 사용하였다. 해석 결과 터널 내부에서 외부로 바람이 부는 경우를 가정한 No. 3 시나리오가 연기 확산 속도가 가장 크면서 가장 빠르게 연기가 호흡 한계선 이하까지 하강하는 것으로 나타났다. 따라서 운영요원이 접근터널에서 피난하는 경우 No. 3 시나리오가 가장 불리한 조건으로 판명되었다.