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119구급대원의 다수사상자 발생 재난 현장의 대응 역량에 관한 연구
이효철,김지희,신요한,국종원 사단법인 한국응급구조학회 2022 한국응급구조학회지 Vol.26 No.2
Purpose: The purpose of this study is to understand currently active Korean paramedics’ disaster response abilities, including immediate response, severity classification, patient treatment, and patient transfer, in a disaster situation with multiple casualties. Methods: A structured questionnaire consisting of a total of 25 questions was used, including 5 questions on the subject's general characteristics and 20 questions on disaster-related emergency response abilities. Results: Among the disaster response abilities of the participants, the patient transport ability scores were high and the cooperative support ability scores were low. In terms of general characteristics, there was a significant difference in age, and it was high in the 40s, and there was a significant positive correlation between each competency. Conclusion: These results suggest that there is an urgent need to develop a systematic and specialized educational system with components inside and outside fire departments related to multiple casualty disasters to improve overall abilities.
이효철,이석원 한국차세대컴퓨팅학회 2015 한국차세대컴퓨팅학회 논문지 Vol.11 No.2
시뮬레이션이란 다양한 개체들이 모델링 된 정보에 따라 입력된 행동을 수행함으로써 실제 환경에서 실험하기 어려 운 문제들의 결과를 예측하고 검증하는 방법이다. 기존의 시뮬레이션 방법에서는 시뮬레이션이 시작되기 이전에 사 용자가 입력한 행동들을 시뮬레이션 개체들이 수행하거나 특정 조건에서 정의된 행동을 수행하여 시뮬레이션을 진 행했다. 하지만 기존의 방법을 통해 이루어지는 시뮬레이션의 경우, 사용자가 사전에 정의한 제한적인 범위 내에서 의 시뮬레이션만이 가능하며 실제 상황에서 발생될 수 있는 다양한 예외 상황을 고려하기 어렵다. 이러한 문제점을 극복하기 위해 본 논문에서는 시뮬레이션 개체들의 동적인 행위 계획을 위해 기존의 데이터 기반 학습과 지식 기반 학습을 상호 보완한 새로운 통합 학습 방법을 제안한다. 제안하는 통합 학습 방법을 통해 시뮬레이션 개체들은 다양 한 상황을 학습할 수 있으며 실제 시뮬레이션 과정에서 시뮬레이션 환경이 변경될 경우, 학습된 지식을 바탕으로 스 스로가 상황에 알맞은 새로운 행동을 계획할 수 있다. 또한, 제안하는 학습 방법을 군사 도메인의 시뮬레이션 상황 에 적용해보고 제안하는 학습 방법의 실제 적용 방법과 가능성을 검증한다. The simulation is the method to predict and analyze the problem that is difficult to experiment in real world through the interaction between modeled entities. Existing simulation methods are operated based on initial input, which is entered when the simulation is started. But, it is only available to simulate limited and predefined situation, and impossible to handle the undefined exceptions. In order to overcome these problems, we propose unified learning approach, which is combining data-driven learning and knowledge-driven learning, for simulation planning. Proposed approach can plan new appropriate behaviors by learning many simulation experiences and domain knowledge in changing simulation environments. Also, we will verify the feasibility and effectiveness of proposed approach applying in the military simulation.
그래핀/폴리우레탄 나노웹 기반의 스트레인센서 제작 및 호흡측정
이효철,조현선,이유진,장은지,조길수 한국감성과학회 2019 감성과학 Vol.22 No.1
The purpose of this study is to develop a strain sensor based on nanoweb by applying electrical conductivity to polyurethane nanoweb by using Graphene. For this purpose, 1% Graphene ink was pour-coated on a polyurethane nanoweb and post-treated with PDMS (Polydimethylsiloxane) to complete a wearable strain sensor. The surface characteristics of the specimens were evaluated using a field emission scanning electron microscope (FE-SEM) to check whether the conductive material was well coated on the surface of the specimen. Electrical properties of the specimens were measured by using a multimeter to measure the linear resistance of the specimen and comparing how the line resistance changes when 5% and 10% of the specimens are tensioned, respectively. In order to evaluate the performance of the specimen, the gauge factor was obtained. The evaluation of the clothing was performed by attaching the completed strain sensor to the dummy and measuring the respiration signal according to the tension using MP150 (Biopac system Inc., USA) and Acqknowledge (ver. 4.2, Biopac system Inc., U.S.A.). As a result of the evaluation of the surface characteristics, it was confirmed that all the conductive nanoweb specimen were uniformly coated with the Graphen ink. As a result of measuring the resistance value according to the tensile strength, the specimen G, which was treated with just graphene had the lowest resistance value, the specimen G-H had the highest resistance value, and the change of the line resistance value of the specimen G and the specimen G-H is increased to 5% It is found that it increases steadily. Unlike the resistance value results, specimen G showed a higher gauge rate than specimen G-H. As a result of evaluation of the actual clothes, the strain sensor made using the specimen G-H measured the stable peak value and obtained a signal of good quality. Therefore, we confirmed that the polyurethane nanoweb treated with Graphene ink plays a role as a breathing sensor. 본 연구의 목적은 그래핀(Graphene)을 사용하여 폴리우레탄 나노웹(Polyurethane Nanoweb)에 전기전도성을 부여하고, 이를 이용하여 나노웹 기반의 스트레인센서(Strain Sensor)를 개발하는 것이다. 이를 위해 1% 그래핀 잉크를 폴리우레탄 나노웹에 푸어코팅(Pour-coating)한 후 PDMS(Polydimethylsiloxane)로 후처리를 하여 착용 가능한 스트레인센서를 완성하였다. 시료 표면에 전도성 물질이 잘 코팅되었는지 확인하기 위해 전계방사형 주사전자현미경(FE-SEM)를 이용하여 시료의 표면 특성을 평가하였다. 시료의 전기적 특성 평가는 멀티미터(Multimeter)를 사용하여 시료의 선저항(Linear Resistance)을 측정하고, 시료를 각각 5%, 10% 인장하였을 때 선저항이 어떻게 변하는지 비교하였다. 또한 시료의 성능을 평가하고자 게이지율(Gauge Factor)을 구하였다. 착의평가 실험은 완성된 스트레인센서를 더미에 착용시킨 후 MP150(Biopac system Inc., U.S.A.)과 Acqknowledge(ver. 4.2, Biopac system Inc., U.S.A.)를 사용해 인장에 따른 호흡신호를 측정하였다. 표면 특성을 평가한 결과, 모든 전도성 나노웹 시료들이 그래핀 잉크로 균일하게 코팅되어있음을 확인하였다. 인장에 따른 저항값 측정 결과, 그래핀을 처리한 시료인 시료 G가 가장 낮은 저항값을, 그래핀을 처리한 후 열처리를 한 시료인 시료 G-H가 가장 높은 저항값을 가졌고, 시료 G와 시료 G-H의 경우 길이가 5%, 10%로 늘어남에도 선저항값의 변화가 안정적으로 증가하는 것으로 나타났다. 저항값 결과와는 달리, 시료 G가 시료 G-H보다 더 높은 게이지율을 보였다. 실제로 착의평가 결과, 시료 G-H를 이용해 만든 스트레인센서가 안정된 Peak값으로 측정되어 좋은 품질의 신호를 얻었다. 그러므로 본 연구를 통해 그래핀 잉크를 처리한 폴리우레탄 나노웹이 호흡 센서로서의 역할을 충분히 수행하는 것을 확인하였다.
이효철,안지현,이경은,김해수,홍창형,오강섭,홍진표,Lee, Hyochul,Ahn, Jihyun,Lee, Kyungeun,Kim, Haesoo,Hong, Changhyung,Oh, Kangsup,Hong, Jin Pyo 대한불안의학회 2017 대한불안의학회지 Vol.13 No.2
Objective : A variety of approaches are needed to solve high suicide rates in Korean society. Although suicide prevention education has been provided for the public and suicide risk groups in Korea, a systematic discussion of simple, effective suicide prevention guidelines for the general public has yet to be made. Self-help guidelines for suicide prevention, which can help prevent suicide in at risk individuals, will be developed through expert questionnaires. Methods : In order to develop the draft guidelines, suicide prevention self-help phrases were gathered and compiled from homepages and publicity materials of domestic and international suicide prevention and related organizations. A panel of 16 suicide prevention experts conducted primary and secondary surveys using the Delphi method, which derives results from consensus among expert groups. The validity and appropriateness of the guidelines was analyzed using content validity ratios (CVR). Results : Of 33 candidate phrases selected for the suicide prevention guidelines, 9 showed high CVR after the secondary Delphi round. The highest level of support with total agreement was given to 'Do not be alone, stay with someone'. However, more than half of the panelists evaluated 14/27 of the primary Delphi round and 12/26 of the secondary Delphi round phrases as invalid. The researchers completed 10 self-help guidelines for suicide prevention, after eliminating 1 redundant phrase and including 2 additional phrases that showed relatively high CVR. Conclusion : We have developed 10 self-help guidelines for suicide prevention through the consensus of experts. Further studies on the effects of the guidleines relative to suicide rates are needed after widespread dissemination.