• 한국환경보건학회지
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• 제31권5호
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• pp.365-371
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• 2005

This study was peformed to explore the current situation of university environmental health and safety (EHS) system and evaluate the effects of such system on university EHS practices. Essential elements for the university EHS system were identified based on the representative examples of foreign universities, and Hey were incorporated into a questionnaire, which was used in this study. Among the academic institutions we surveyed in this study, 89% of the universities employed health and safety manager, and 65% kept departments. However, less than 50% of universities maintained EHS policies, maintained health and established safety committees within the university headquarters, and held health and safety meetings on regular basis. Several basic requirements such as chemical hygiene program and laboratory safety training program lacked in many universities. Some basic surveillance was performed in many universities, however, only few universities carried out surveillance on biological safety, medical examination, and chemical exposure monitoring. EHS system had significant influence on university EHS program (p<0.05). Performances of EHS activities were influenced by presence of EHS policies, and university health and safety committees.

• 한국항행학회논문지
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• 제12권6호
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• pp.554-558
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• 2008

본 논문에서는 현재에 항공감시 통신링크로 사용되는 다중접속방식인 STDMA(Self -organized Time Division Multiple Access) 통신 프로토콜이 ICAO 규격에 따라 설계하였다. 다중접속방식 통신프로토콜은 감시데이터링크 시스템의 MAC 영역에서 사용된다. 통신시뮬레이션 프로그램을 이용하여 다중접속방식 프로토콜을 ICAO 규격서 제시된 순서에 맞게 프로그램을 구현하였고, 시뮬레이션 결과를 통해 확인하였다. 데이터 전송시 보고율에 따라서 슬롯할당과 예약이 발생되고, 슬롯 번지수도 계산되었다.

• 한국항공운항학회지
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• 제21권3호
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• pp.9-14
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• 2013

Continuous airworthiness system is comprised of regulations and procedures to assure the safety and reliability through the total stage of development, certification and operation of aircraft. The purpose of this system is not only to provide the guidelines that should be kept by manufacturers and operators, but also to evaluate the maintenance capability in every activity of safety related procedures. During the development process of the mid and large size aircraft, operational experience should be reflected systematically for a safer and more reliable product by using the meaningful data base from operation. The relationship of safety roles between manufacturer and operator is mutually complementary, and the roles of each function have an influence to the next step. Overall structure of the procedure contains the concept of continuous analysis and feedback to achieve highest degree of safety and reliability during the entire life of aircraft. Finally, this paper describes how the feedback is made and used for aircraft design from operational experience under the continuous analysis and surveillance system.

• 대한임상독성학회지
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• 제14권1호
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• pp.54-59
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• 2016

Purpose: This study was conducted to investigate the independent factors associated with the registration rate for the community-based post suicidal care program in the emergency department (ED). Methods: This prospective observational study was conducted between January and September 2015 at the academic ED in the tertiary urban hospital. The variables examined included gender, age, address, type of insurance, history of previous psychiatric disease, suicide methods, number of previous attempts, CES-D (The Center for Epidemiologic Studies-Depression Scale), and disposition at ED. Univariate and multivariate logistic regression analysis were conducted to identify factors affecting the registration rate for the community-based post suicidal care program. Results: Overall, 331 suicides were investigated, 61 (18.4%) of which were registered in the post-suicide care program. Factors such as a intervention by psychiatric physician (OR: 3.287, 95%; CI: 1.207-9.624) and levels of depression by CES-D score of 16-24 (OR: 3.635; CI: 1.055-12.526) were significantly correlated with registration for the program. Conclusion: The registration rate for the community-based post suicidal care program was influenced by frequent intervention by a psychiatric physician and levels of depression by CES-D score of 16-24.

• 한국학교보건학회지
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• 제22권2호
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• pp.157-167
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• 2009

Purpose : The purpose of this study is to explore the students injuries by analyzing the data which has been inputted by the emergency center of the cooperated hospitals and the 119 rescue party through the injury surveillance system in Cheonan city. Method : Students were divided into the elementary, middle, high school students with the 776 cases of children and teenagers(7-19years old) of injury surveillance system in Cheonan area from january to june in 2009. Frequency analysis and $x^2$-test was done to recognize the features of students injuries among the groups. The program to be used for the statistical analysis is SPSS 17.0. Result : Out of the injury incidence rate, the elementary school students(52.1%) are first, the high school students (24.9%) are second, the middle school students appear to be 23.1%. Male is about two times higher than female by 66.6% in the injury incidence. In terms of the injury mechanism, the injury(22.2%) by hit is the first, the traffic accident(21.5%) is the second, the slippery(16.8%) is followed. The injuries were occurred most largely at 16:00-20:00(33.4%), and the 33.6% of injury by daily leisure activity occurs at 16:00-20:00 chiefly. Conclusion : Analysis using the data of the injury surveillance system has some advantages compared to the previous research such as reliability and specification. To prevent the students injuries, not the individual problem but the social dimension should be acknowledged so that we can secure and promote the safety from the risk. Therefore, we must organize the role assignment and the cooperative network in the school, home and community.

• 한국환경보건학회:학술대회논문집
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• 한국환경보건학회 2005년도 가을학술대회
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• pp.183-184
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• 2005

• 한국환경보건학회지
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• 제34권3호
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• pp.188-198
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• 2008

Since 2003, the National Institute of Environmental Research (NIER) of Korea has been conducting "The monitoring study on exposure level and biomarkers of environmental pollutants" in the Ulsan industrial complex with the goals to establish a surveillance system for residents, to evaluate the health effects associated with chronic exposure to environmental pollutants and to develop the environmental health indicators in Ulsan industrial complex. This program consists of three phases an initial or foundation phase in which the program is developed, made operational and extended to the community, followed by an evaluation and accountability assessment of the surveillance system and finally an improvement in the quality of life and the maintenance of good health for Ulsan residents. In the period 2003 to 2008, the study program developed the surveillance system which will be used for the full-length survey. All participants in this study were contacted at a presentation meeting for residents, introduced to the objectives and protocols of the survey, and asked to participate. Informed consent was obtained from each participant. The study is now underway and includes questionnaires, health examinations and the analysis/collection/banking of bio-sample such as blood and urine. To date 828 subjects have participated and already 588 subjects have been followed up. We are committed to complete health examinations and to arrange storage of biosample for all participants. During the current year, we will analyze metals (Pb in blood and Cd, inorganic As and Hg in urine) in 1,972 samples and VOCs (11 species) and PARs (18 species) in 300 samples (blood sample). Moreover, the summary of the first step and the further preparation of the second step are currently underway. In this article, we introduce the study and its protocols and the distribution and size of the study participants. In conclusion, this survey will be continuously conducted on the established cohort and will enable the identification of relationship between environmental pollutant exposures and the health status of residents in Ulsan industrial complex.

• 전자공학회논문지
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• 제50권12호
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• pp.141-149
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• 2013

본 논문은 멀티 코어 프로세서 기반의 영상 감시 시스템을 위한 침입 탐지 처리의 가속화를 제안한다. 침입 탐지 처리의 가속화를 위해 병렬화를 진행하였고, 이를 위해 기존 침입 탐지 알고리즘을 분석하고 데이터 의존성을 고려하여 프레임 단위의 병렬화된 처리 구조를 설계하였다. 병렬화된 침입 탐지 처리의 유효성을 검증하기 위하여 다중 쓰레드 기반의 프로그램으로 구현하여 침입 탐지의 가속화 정도를 측정하였다. 구현한 침입 탐지 처리 프로그램의 탐지 속도는 논리적 쓰레드를 8개까지 구현할 수 있는 환경에서 기존 단일 쓰레드 처리 대비 최대 353.76%가 향상되었다.

• 한국콘텐츠학회논문지
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• 제12권10호
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• pp.22-34
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• 2012

본 논문에서는 적외선 무선 센서 노드 및 무인감시카메라를 이용한 축사 관리 시스템을 설계 및 구현한다. 제안하는 축사 관리 시스템은 상시 축사 모니터링, 침입 감지, 전기기기 자동제어 기능을 제공한다. 첫째, 제안하는 시스템은 무인감시카메라를 이용하여 축사와 소의 상태를 24시간 모니터링 할 수 있으며, 적외선 무선 센서 노드를 사용하여 외부 침입자를 감지할 수 있다. 둘째, 전원제어기를 사용하여 축사 내부 전기기기의 전원을 제어할 수 있다. 마지막으로 스마트폰앱 프로그램을 사용하여 이들 컴포넌트를 통합하고, 테스트베드를 통해 제안하는 시스템의 유효성을 검증한다.

• Nuclear Engineering and Technology
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• 제44권5호
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• pp.543-550
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• 2012

The decrease in the fracture toughness of ferritic steels in a reactor pressure vessel is an important factor in determining the lifetime of a nuclear power plant. A surveillance program has been in place in Korea since 1979 to assess the structural integrity of RPV steels. In this work, the surveillance data were collected and analyzed statistically in order to derive the empirical relationship between the embrittlement and strengthening of irradiated reactor pressure vessel steels. There was a linear relationship between the yield strength change and the transition temperature shift change at 41 J due to irradiation. The proportional coefficient was about $0.5^{\circ}C$/MPa in the base metals (plate/forgings). The upper shelf energy decrease ratio was non-linearly proportional to the yield strength change, and most of the data lay along the trend curve of the US results. The transition regime temperature interval, ${\Delta}T_T$, was less than the US data. The overall change from irradiation was very similar to the US results. It is expected that the results of this study will be applied to basic research on the multiscale modeling of the irradiation embrittlement of RPV materials in Korea.