• 한국보건간호학회지
• /
• 제37권2호
• /
• pp.247-260
• /
• 2023

Purpose: The purpose of this study was to gain an in-depth understanding of the characteristics and competencies of practice experienced by public health center nurses(PHNs) during the early response phase of the coronavirus disease 2019(COVID-19) pandemic. Methods: PHNs were recruited from public health centers(PHC) in ten cities in Korea, using purposive sampling. They participated in semi-structured, in-depth interviews from December 21, 2020, to February 18, 2021. The interviews were transcribed verbatim and analyzed using qualitative content analysis. Results: Three themes and nine categories were drawn from the findings. The three themes that emerged from the data analysis were as follows: 'Handling expanding work scope and overwhelming workload beyond prepared competencies, willing to go anywhere.', 'Performing tasks of cooperation and communication required in the disaster management administrative system.', 'Demonstrated proficiency in clinical nursing practices, but recognized the need for further development of leadership and administrative capabilities.' Conclusions: The experiences of the subjects' have implications for the development of content for community nursing education that cultivates basic competencies to respond to real pandemic situations during undergraduate education. It is proposed that it would be necessary to establish a support system for developing specialized competencies in public health nursing.

• 한국환경과학회지
• /
• 제33권3호
• /
• pp.193-203
• /
• 2024

This study aims to determine the factors affecting the level of satisfaction with the Cell Broadcast Service (CBS) among citizens in Incheon. Partial least squares (PLS) regression, instead of multiple regression, was used for the analysis because it can solve multicollinearity and sample size issues. The analysis results are as follows: The factor with the greatest effect on satisfaction with CBS among Incheon citizens, was the elimination of redundancies (VIP=1.185). Therefore, local governments, government agencies, and public organizations must coordinate their ideas and collectively create guidelines to eliminate redundancies. The second most influential factor was the expansion in the broadcast medium from legal, institutional, and policy aspects (VIP=1.087). This is because differences in generation, age, gender, and personal characteristics were not considered. Therefore, it is necessary to devise a customized messaging tool through the expansion of broadcast media. The broadcast criteria of the legal, institutional, and policy perspectives comprised the third most influential factor, with a high VIP value of 1.053. Consequently, it is essential to devise a plan to avoid distributing unnecessary cell broadcast services, by establishing criteria for areas and sections, time, and the direct and indirect impact zones of a disaster. In the future, this study could be used as base data to develop policies, guidelines, and response measures for Incheon CBS. Given the lack of research on the diverse characteristics of each social class and the city traits of each region, and a lack of concrete empirical research on each factor, continuous and in-depth studies are required in the future.

• 문화기술의 융합
• /
• 제10권2호
• /
• pp.407-417
• /
• 2024

이 연구의 목적은 유해화학물질 중 하나인 염소를 운송하는 차량이 사고 등으로 전복되어 가스 누출 시 염소독성(ppm)에 의해 예상되는 피해를 예측하고 최소화를 위한 효율적 대응방안을 마련하는데 있다. 피해예측을 위해 염소차량 운행 중 운전자의 부주의 등으로 발생할 수 있는 염소 누출에 따른 독성(ppm) 피해거리를 ALOHA 프로그램을 적용하여 정량적으로 산정하였다. 독성가스 누출시 피해거리는 누출된 위험물의 양과 누출당시의 기상조건 등에 영향을 받는다. 따라서 위험물질의 누출량과 기상조건의 다양한 변화를 통해 피해거리를 다각적으로 분석하였다. 중간 이하의 조건(누출량:5ton, 풍속:3m/s, 대기안정도:D)으로 산정한 피해거리는 AEGL-2의 경우(LOC:2ppm) 9km로 나타났으며, 이는 염화수소의 독성과 유사하고 심각한 호흡장해 등 인명피해를 발생시킬 수 있는 농도이다. 특히, 도심지역에서의 누출은 대규모 인명피해로 연결될 수 있다. 이에 누출사고 발생 시 누출지점 및 누출량에 따른 적절한 대응을 통해 피해를 최소화 하는 방안을 제시하였다.

• 한국재난정보학회 논문집
• /
• 제19권4호
• /
• pp.869-881
• /
• 2023

연구목적: 본 연구는 어린이 안전대책의 실효성을 향상시키기 위한 개선방안을 마련하고자 한다. 연구방법: 어린이 안전사고 발생 현황에 대하여 조사하였고 과거 정부 부처의 주요 어린이 안전대책을 분석하여 시사점을 도출하였다. 또한 어린이안전 정책 대상자인 어린이, 보호자, 어린이이용시설 종사자 1,000명을 대상으로 인식조사를 실시하여 향후 어린이 안전대책의 실효성 방안을 제시하였다. 연구결과: 어린이 생활공간(환경)의 안전도에 대해 보호자는 35.3%로 1/3 이상이 안전하지 않다고 응답하였다. 또한 보호자(95.3%), 어린이이용시설 종사자(89%) 모두 '교통사고'에 대하여 위험성이 가장 높다고 응답하였고 2번째 위험 요인은 부모(어린이이용시설 종사자 부주의)와 어린이이용시설 종사자(가정 내 보호자 부주의)가 상반된 의견을 보였다. 장소별 위험성을 살펴보면 '도로와 인도'를 가장 위험한 장소로 응답하였고 어린이안전을 위해 부모(64.3%) 및 종사자(78.3%) 모두 '부모'역할이 가장 중요하다고 응답하였다. 어린이 안전사고 예방을 위한 개선사항은 '도로교통 시설물 안전관리 강화' 응답률이 보호자 75.8%, 어린이이용시설 종사자 65%로 가장 필요하다고 응답하였다. 결론: 어린이 안전대책의 실효성을 강화하기 위한 방안은 다음과 같다. 첫째, 어린이 안전대책의 연속성을 확보하기 위해 2022년 8월부터 시행된 「어린이안전 종합계획」을 수립하고 정책 대상자가 체감할 수 있도록 실효성 있게 운영해야 한다. 둘째, 어린이 정책 대상자의 체감도를 향상시키기 위해 어린이안전 분야별 특성을 고려한 추진대책을 지속적으로 강화해야 한다. 셋째, 어린이 안전성 확보를 위한 분야별 안전인프라를 확충해야 한다. 넷째, 어린이 스스로가 안전성을 확보할 수 있는 안전교육을 강화하고 부모(보호자) 안전교육이 의무화될 수 있는 세부적인 대책 마련해야 한다.

• 한국응급구조학회지
• /
• 제17권3호
• /
• pp.115-137
• /
• 2013

Purpose: The purpose of this study was to investigate the extended job of paramedic after the 1st job description in 2000 by the National Health Personnel Licensing Examination Board. Methods: This study was carried out from May 2012 to July 2013 on the Developing A Curriculum (DACUM) method to analysts 330 responses among 400 questionnaires (response rate 82.5%) after analysing 30 pilot questionnaires. In order to enhance validity and reliability of this job description, 2 job analysts in universities and 10 EMT-Paramedics in hospitals and fire stations were recruited. Results: There were differences between 166 (year 2000) and 240 (2012) in task element. There were higher answering at triaging patient(2.64 frequency, 4.15 importance), calling for help(2.68 frequency, 4.07 importance) in disaster emergency care. There were higher answering at measuring vital sign (3.95 frequency, 4.22 importance), measuring ECG(3.84 frequency, 4.14 importance), wound care(3.48 frequency, 3.86 importance), bleeding control & wound care(3.46 frequency, 3.86 importance), applying $O_2$(3.40 frequency, 3.94 importance) in physician assistant. Conclusion: Scope of extended practice as a physician assistant in hospital setting recommended us to replace the present curriculum and national exam with new curriculum and national written & skill test.

• 마이크로전자및패키징학회지
• /
• 제15권1호
• /
• pp.51-58
• /
• 2008

본 논문에서는 PTC 서미스터의 전기적 온도특성을 이용하여 각종 전기화재 및 전기사고를 예방 보호하는 방재시스템에 대해 연구하였다. PTC(Positive Temperature Coefficient) 서미스터는 온도변화에 따른 저항특성이 정 (+)온도계수를 갖는 특징이 있다. PTC서미스터는 정온도계수를 갖는 $BaTiO_3$계 세라믹스의 정방정계-입방정계 구조를 가지고 상변이점인 큐리(Curie)온도 이상으로 온도가 증가하면 저항이 급격히 증가하는 현상을 보인다. 본 논문에서는 이러한 정저항 온도특성과 자체 발열특성을 갖는 PTC 서미스터를 전기단락사고나 과부하사고 등 전기사고의 감지센서로 이용하여 전기화재사고를 예방하는 제어시스템에 대해 제안하였다. 그 결과 기존에 상용되는 차단기들의 빈번한 오동작과 저 신뢰성, 저속응성 등으로 발생되는 전기화재 및 전기재해의 문제점들을 해결하였다. 또한 제안한 방재시스템의 다양한 실험결과를 통해 이론적 해석의 타당성을 입증하였다.

• Nuclear Engineering and Technology
• /
• 제52권2호
• /
• pp.397-416
• /
• 2020

Investigations of the commercial aircraft impact effect on nuclear island infrastructures have been drawing extensive attention, and this paper aims to perform the safety assessment of Generation III nuclear power plant (NPP) buildings subjected to typical commercial aircrafts crash. At present Part II, based on the verified finite element (FE) models of aircrafts Airbus A320 and A380, as well as the NPP containment and auxiliary buildings in Part I of this paper, the whole collision process is reproduced numerically by adopting the coupled missile-target interaction approach with the finite element code LS-DYNA. The impact induced damage of NPP plant under four impact locations of containment (cylinder, air intake, conical roof and PCS water tank) and two impact locations of auxiliary buildings (exterior wall and roof of spent fuel pool room) are evaluated. Furthermore, by considering the inner structures in the containment and raft foundation of NPP, the structural vibration analyses are conducted under two impact locations (middle height of cylinder, main control room in the auxiliary buildings). It indicates that, within the discussed scenarios, NPP structures can withstand the impact of both two aircrafts, while the functionality of internal equipment on higher floors will be affected to some extent under impact induced vibrations, and A380 aircraft will cause more serious structural damage and vibrations than A320 aircraft. The present work can provide helpful references to assess the safety of the structures and inner equipment of NPP plant under commercial aircraft impact.

• Structural Engineering and Mechanics
• /
• 제66권2호
• /
• pp.273-283
• /
• 2018

Currently, the dynamic amplification effect of suction is described using the wind vibration coefficient (WVC) of external loads. In other words, it is proposed that the fluctuating characteristics of suction are equivalent to external loads. This is, however, not generally valid. Meanwhile, the effects of the ventilation rate of louver on suction and its WV are considered. To systematically analyze the effects of the ventilation rate of louver on the multi-dimensional WVC of ultra-large cooling towers under suctions, the 210 m ultra-large cooling tower under construction was studied. First, simultaneous rigid pressure measurement wind tunnel tests were executed to obtain the time history of fluctuating wind loads on the external surface and the internal surface of the cooling tower at different ventilation rates (0%, 15%, 30%, and 100%). Based on that, the average values and distributions of fluctuating wind pressures on external and internal surfaces were obtained and compared with each other; a tower/pillar/circular foundation integrated simulation model was developed using the finite element method and complete transient time domain dynamics of external loads and four different suctions of this cooling tower were calculated. Moreover, 1D, 2D, and 3D distributions of WVCs under external loads and suctions at different ventilation rates were obtained and compared with each other. The WVCs of the cooling tower corresponding to four typical response targets (i.e., radial displacement, meridional force, Von Mises stress, and circumferential bending moment) were discussed. Value determination and 2D evaluation of the WVCs of external loads and suctions of this large cooling tower at different ventilation rates were proposed. This study provides references to precise prediction and value determination of WVC of ultra-large cooling towers.

• Journal of Forest and Environmental Science
• /
• 제29권3호
• /
• pp.237-248
• /
• 2013

The legal basis for the systematic prevention and response to landslide hazards, and the rehabilitation of landslide-hit areas, was established through the amendment of the Forest Protection Act in August 2012. The most noticeable amendment to the Act is the inclusion of clauses associated with the designation and management of landslide-prone zones (including debris flow-prone zones). In this paper, we (1) introduce the clauses related to the designation and management of landslide-prone zones that were included in the amended Forest Protection Act, (2) examine their significance by reviewing the present status of related domestic laws and structural countermeasures such as sediment check dams for sediment-related disaster prevention, and (3) suggest the future directions of the procedure for the designation and cancellation of such zones, and their maintenance and institutional aspects. The establishment of an institutional device for the designation and management of landslide-prone zones has great significance in the aspect of (1) the establishment of a comprehensive management and prevention system for potential landslide-prone zones in forested areas where the hazard risk has been poorly recognized as compared with the flood risks in lowlands, and (2) the establishment of the basis for overcoming the limits of structural countermeasures according to limited budgets. To develop the designation and management system for landslide-prone zones, not only must present problems be addressed, but a cooperation system between the administration and local residents must also be established.

• Structural Engineering and Mechanics
• /
• 제52권3호
• /
• pp.485-505
• /
• 2014

This study aimed to develop an approach to accurately predict the wind models and wind effects of large wind turbines. The wind-induced vibration characteristics of a 5 MW tower-blade coupled wind turbine system have been investigated in this paper. First, the blade-tower integration model was established, which included blades, nacelle, tower and the base of the wind turbine system. The harmonic superposition method and modified blade element momentum theory were then applied to simulate the fluctuating wind field for the rotor blades and tower. Finally, wind-induced responses and equivalent static wind loads (ESWL) of the system were studied based on the modified consistent coupling method, which took into account coupling effects of resonant modes, cross terms of resonant and background responses. Furthermore, useful suggestions were proposed to instruct the wind resistance design of large wind turbines. Based on obtained results, it is shown from the obtained results that wind-induced responses and ESWL were characterized with complicated modal responses, multi-mode coupling effects, and multiple equivalent objectives. Compared with the background component, the resonant component made more contribution to wind-induced responses and equivalent static wind loads at the middle-upper part of the tower and blades, and cross terms between background and resonant components affected the total fluctuation responses, while the background responses were similar with the resonant responses at the bottom of tower.