• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2006년도 학술발표회 논문집
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• pp.758-763
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• 2006

Statistical concepts and methods are routinely utilized in a number of design and management problems in engineering hydrology. This is because most of hydrological processes have some degree of randomness and uncertainty. Thus, the concepts of risk and uncertainty are commonly utilized for designing and evaluating hydraulic structures such as spillways and dikes. Therefore, in this study, uncertainty analysis considering the variance of design floods is performed to evaluate the uncertainty of the hydrologic risk of flood related hydraulic structures using frequency analysis.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 춘계학술대회 논문집
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• pp.247-253
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• 2004

For the preparation of KTX operation and electrifying the conventional line, many accidental fatalities were occurred in recent year. In order to improve track worker safety as low as possible, risk assessments are carried out in this study. As an input of risk assessment 5-year accident data were analyzed into frequency and fatality. As a result risk of track worker based on equivalent fatality is derived.

• 한국항공운항학회지
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• 제20권1호
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• pp.13-18
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• 2012

'Navigable airspace' means an airspace at and above the minimum safe flight level, including airspace or flight procedures needed for safe takeoff and landing. Airspace may be established as needed and may be abolished, and in some cases may be limited to airspace management. These are absolutely based on risk assessment. Safety is the state in which the risk of harm to persons or of property damage is reduced to, and maintained at or below, an acceptable level through a continuing process of hazard identification and risk management. 'Risk' is the assessed potential for adverse consequences resulting from a hazard and 'Risk assessment' involves consideration of both the frequency and the severity of any adverse consequence. This paper proposed 'risk assessment procedure' for the structural changes of Navigable Airspaces through literature reviews relevant to manuals on airspace management and risk management.

• 한국축산식품학회지
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• 제35권5호
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• pp.674-682
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• 2015

The objective of this study was to evaluate the risk of illness from Campylobacter spp. on ham. To identify the hazards of Campylobacter spp. on ham, the general characteristics and microbial criteria for Campylobacter spp., and campylobacteriosis outbreaks were investigated. In the exposure assessment, the prevalence of Campylobacter spp. on ham was evaluated, and the probabilistic distributions for the temperature of ham surfaces in retail markets and home refrigerators were prepared. In addition, the raw data from the Korea National Health and Nutrition Examination Survey (KNHNES) 2012 were used to estimate the consumption amount and frequency of ham. In the hazard characterization, the Beta-Poisson model for Campylobacter spp. infection was used. For risk characterization, a simulation model was developed using the collected data, and the risk of Campylobacter spp. on ham was estimated with @RISK. The Campylobacter spp. cell counts on ham samples were below the detection limit (<0.70 Log CFU/g). The daily consumption of ham was 23.93 g per person, and the consumption frequency was 11.57%. The simulated mean value of the initial contamination level of Campylobacter spp. on ham was −3.95 Log CFU/g, and the mean value of ham for probable risk per person per day was 2.20×10⁻¹². It is considered that the risk of foodborne illness for Campylobacter spp. was low. Furthermore, these results indicate that the microbial risk assessment of Campylobacter spp. in this study should be useful in providing scientific evidence to set up the criteria of Campylobacter spp..

• 한국가스학회지
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• 제17권4호
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• pp.39-44
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• 2013

최근 화학공장에서는 대형 폭발사고 등이 주로 유지 보수의 정비 시에 많이 발생되고 있다. 정비 시에 효과적인 재해예방을 하기 위해서는 핵심대상을 찾는 것이 매우 필요하다. 이 논문에서는 재해예방의 핵심요인을 찾기 위해 핵심대상으로 화학설비를 선정하였고, 화학설비별로 위험순위도를 정하여 재해예방의 대책을 세우는 우선순위를 밝히고자 하였다. 연구방법으로 화학설비의 종류는 재해분석을 통하여 찾고, 화학설비별 위험도는 재해분석을 통해 가능성인 재해빈도와 중대성인 재해강도의 근로손실일 수를 기준하여 산정하였다. 또한 화학설비별로 전문가들의 지식과 경험을 바탕으로 한 지식기반 기법에 의한 가능성과 중대성 자료를 활용하여 위험도를 산정하였다. 연구결과, 화학공장의 정비 시에 재해예방을 위해 화학설비별 위험순위는 반응기, 건조기, 탱크로리 등의 순위로 나타났다. 이 결과로부터 화학공장의 정비 시에 재해예방을 위해 위험순위에 따른 각별한 대책과 주의를 기울여야 할 것으로 사료된다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제31권4호
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• pp.169-176
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• 2020

Exploring the risk factors of adolescent suicide is important for effective suicide prevention. This study explored the clustering of adolescent suicides based on six risk factors: mental disorder, broken family, depression, anxiety, previous suicide attempts, and deviant behaviors. Using 173 student suicide reports obtained from the Ministry of Education, we evaluated the associations between suicide and variables related to mental disorders; dysfunctional family life; depression and anxiety; previous suicide attempts; deviant behaviors such as drinking and smoking; and school life characteristics, including attendance and discipline, problems within the past year, and incidents prior to suicide. In addition, reports of warning signs just before suicide were included in the analysis. The two-stage cluster analysis classified the students into three clusters: the silent type (cluster 1; 48.55%), in which no risk factors were observed; environmental-risk type (cluster 2: 24.28%), which featured a high frequency of broken households, deviant behaviors such as smoking/drinking and running away from home; and depressive type (cluster 3: 27.17%), which featured a high frequency of mental health problems such as depression, anxiety, and suicide attempts. Identifying the sub-types of adolescent suicide may help to inform tailored suicide prevention and intervention strategies in school.

• Journal of Nutrition and Health
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• 제37권9호
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• pp.801-808
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• 2004

Benign prostatic hyperplasia (BPH) is the most common prostate disease in middle aged and elderly men. Therefore, identifying risk factors for BPH is crucial for understanding the etiology and for undertaking interventions or targeting strategies. The survey was carried out in two steps: first, pilot study was conducted prior to the main study in order to estimate baseline characteristics. Second, main study investigated prevalence and risk factors of BPH by clinical diagnostic tests and questionnaire. A total of 641 male aged 50-79 years participated in this community-based cross-sectional study. Using 24 hour recall of food consumption, we found that animal fat intakes increased the risk of BPH with adjusted for age, chronic bronchitis, PSA level, drinking frequency, and excercise frequency (odds ratio 1.84,95% confidence interval 1.10-3.06) . Although BPH has been considered as unavoidable disease with advancing age, if these dietary risk factors are clearly identified, it can be prevented effectively by laying special emphasis on those at risk.

• 기본간호학회지
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• 제12권3호
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• pp.395-403
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• 2005

Purpose: Methicillin-resistant Staphylococcus aureus (MRSA) is a major nosocomial pathogen in the intensive care units (ICUS). The purpose of this case-control study is to identify risk factors for acquisition of MRSA during ICU stays in patients with and without MRSA. Method: The study was conducted in a 16 beds-neurosurgical intensive care unit of a 2200-bed tertiary care university hospital in Seoul, Korea. Medical record and Critical Classification Scoring System were reviewed retrospectively in patients who were admitted more than 3 days from August 1, 2003 to May 30, 2004. Cases and controls were matched for age and gender. The obtained specimens were nasal swab and sputum. Result: There were 950 patients' admissions during the period. Among them, MRSA was isolated from twenty-three patients who were considered as hospital acquired. Artificial airway (p=.045), frequency of suction (p=.002), nasogastric tube (p=.004), wound drain (p=.045), and vancomycin (p=.019) were risk factors for MRSA acquisition in univariate analysis. Frequency of suction (p=.012, OR 3.5) was revealed as the only risk factor in multivariate conditional logistic regression. Conclusion: Our findings give support to recent studies that suggest that frequent physical contact maγ increase the nosocomial acquisition of MRSA in a neurosurgical ICU.

• 수산해양기술연구
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• 제55권2호
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• pp.145-151
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• 2019

The coastal composite fishery has the highest rate of around 30.0% in registered fishing vessels of Korea for the last three years. The risk analysis for the fisher's safety of coastal composite fishing vessels was conducted to serve as a basic data for improving the healthy and safe working environment of fisher using fisher's occupational accidents of the national federation of fisheries cooperatives (NFFC) from 2016 to 2018 (n = 1,105). As a result, the occupational accident occurrence rate of coastal composite fishery was 3.76% in all industries, 7.8 times the rate of that. In addition, death and missing rate was found to have a serious level management to 10.10‱. Among the accidents, 76.0% occurred at sea. The slipping, others and contact with machinery or fishing gear occurred more frequently in order in the frequency of accident occurrence pattern. In the risk assessment using frequency and severity, slipping, contact with machinery and others showed high risk during fishing. The results are expected to contribute to identification and assessment of safety hazard occurred in coastal composite fishing vessels.

• 치위생과학회지
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• 제17권4호
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• pp.315-322
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• 2017

본 연구는 2014년 페루 리마 및 까야오 지역 학생 건강증진 프로그램의 기초조사 자료를 활용한 단면연구이며, 연구대상은 페루 리마북부 및 까야오 지역 내 일반 국 공립 중학교에 다니고 있는 11~19세의 청소년 959명이었다. 연구의 목적은 페루 도시 빈곤 지역 학생들의 각 건강위험행동과 칫솔질 빈도 간에 관련성을 파악하기 위해 분석되었으며, 다음과 같은 결론을 얻었다. 첫째, 페루 리마 및 까야오 지역 청소년들의 12.1% (116명)는 하루 1회 이하로 칫솔질 하였으며, 87.9% (843명)는 하루 2회 이상 칫솔질을 하였다. 하루 칫솔질 빈도의 평균은 2.42회였다. 둘째, 연구대상자들의 인구 사회학적 특성을 보정 한 후에 두 가지의 건강위험행동과 칫솔질 빈도 간에 관련성이 나타났으며, 해당 건강위험행동은 여가시간에 주로 비활동성 여가생활(TV, game, internet)을 하는 학생과 외출 후 비누를 이용하여 손을 씻지 않는 학생(never/rarely)이 하루 칫솔질을 1회 이하로 할 OR이 더 높았다. 이상의 결과를 종합하여 보면, 페루 리마 및 까야오 지역 연구대상 청소년들의 하루 칫솔질 평균치는 WHO에서 권장하는 최소 수준인 2회 정도로 파악되었으며, 건강위험행동(비활동성 여가생활, 외출 후 손씻지 않기)을 하는 학생들은 하루 칫솔질 빈도 또한 낮은 것으로 나타났다. 향후 페루 도시 빈곤 지역 청소년들을 대상으로 한 ODA 건강증진 프로그램을 개발할 때에는 본 연구에서 도출된 결과를 토대로 신체활동 프로그램과 개인위생 프로그램에 구강보건교육을 통합적으로 실시할 필요가 있다.