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정애리(Jung, Aeri),강지영(Kang, Jiyoung) 학습자중심교과교육학회 2020 학습자중심교과교육연구 Vol.20 No.20
간호학에서 해부학은 간호사가 되어 환자를 돌보기 위해서 필수적으로 습득해야 할 인체의 구조와 기능을 학습하는 중요한 전공기초 교과목이다. 본 연구의 목적은 간호학생을 위한 심장해부 간호실습모듈을 개발하고 적용하여 학생들의 심장해부 학습 경험을 생생하게 탐색하는 것이다. 본 연구에서 개발한 심장해부 간호실습모듈은 사전학습, 현장학습, 사후학습, 과제학습으로 이루어진 4단계의 학습과정이다. 1단계 사전학습은 심장모형을 활용한 이론수업, 2단계는 심장박물관 현장견학으로 심장해부학 카데바 실습과 특강, 심장박물관 투어, 심장 VR 체험활동을 포함한 실습수업, 3단계는 심장의 구조와 기능을 그림으로 그리고 색칠하면서 심장해부를 복습하는 사후학습, 4단계는 심장박물관 현장학습 후에 실습일지를 작성하는 과제학습이다. 연구 참여자는 2019년 2학기에 해부학을 수강한 B대학교 간호학과 1학년 학생 중에 사후 및 과제학습 내용인 실습일지를 분석하는데 동의한 학생 70명이며, 그 중 7명의 학생은 개별면담에 참여하였다. 본 연구는 심장해부학 학습 경험을 자유롭게 서술한 실습일지 내용과 개별면담 내용을 전통적 내용분석 방법으로 분석한 질적 연구이다. 심장해부 간호실습모듈을 통해 학습한 경험은 3개의 중심주제와 6개의 하위주제가 도출되었으며 학생들은 “심장을 생생하게 체험하며 학습함”을 경험하였다. 도출된 3개의 중심주제는 ‘심장을 이해함’, ‘심장을 체험함’, ‘생생하게 학습함’ 이었다. 학생들은 심장을 직접 보고 만지며 생생하게 체험하면서 학습하였다며 만족감을 표현하였고 잊지 못할 특별한 경험이었다고 말하였다. 본 연구는 기존 심장해부 이론수업에 심장박물관 현장견학을 통한 심장 카데바 실습을 추가한 심장해부 간호실습모듈을 간호학생에게 적용하여 심장해부 학습 경험을 포괄적으로 탐색한 실습 사례를 공유함으로써 간호학생을 위한 해부학 실습교육 프로그램 개발에 기초자료를 제공한 점에서 의의가 있다. In nursing, human anatomy is a major basic course for nursing students in which they learn the structure and function of the human body. This course is essential to taking care of patients and must be mastered. The purpose of this study is to develop and apply a cardiac anatomy nursing practice module to explore the nursing students heart anatomy learning experience. The cardiac anatomy nursing training module developed in this paper is a four-step learning process consisting of pre-learning, on-site learning, post-learning, and task learning. Step 1 or pre-learning is a theory class using a heart model. Step 2 or on-site learning is a hands-on lesson in which a heart museum tour includes a heart cadaver training and a special lecture, as well as a heart VR experience activity. Step 3 or post-learning is a review process on the heart anatomy conducted by drawing and coloring the heart. Step 4 or task learning is the process of writing and reflecting on the practical training diary after on-site learning at the heart museum. Among the first-year nursing students who took anatomy in the second semester of 2019, 70 students agreed to analyze the practice diary, and seven of them participated in individual interviews. This study is a qualitative content analysis that evaluates the contents of a practice diary and the individual interviews on the heart anatomy practice. The experience acquired through the cardiac anatomy nursing practice module was derived with three core themes and six sub-themes, where it was found that the students experienced “learning while experiencing the heart vividly.” The three main themes derived were “understanding the heart,” “experiencing the heart,” and “learning vividly.” The students expressed satisfaction by describing a crowned heart, a mysterious heart, a beautiful heart, a wise heart, and a powerful heart, and by learning while directly observing and touching the heart. The students also stated that it was an unforgettable and special training. In conclusion, basic data were gathered for the development of an anatomy practice nursing education program by means of comprehensively exploring the learning experiences of students who were able to experience cardiac anatomy practice via heart cadaver training through a heart museum field visit in theory class.
공기호흡형 연료전지에서 작동 온도가 시스템 성능에 미치는 영향
정애리(Aeri Jung),공임모(Im Mo Kong),김민수(Min Soo Kim) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
In an air-breathing proton exchange membrane fuel cell system, water management is very important issue. Generally, flooding problem is occurred at low temperature condition. However, as operating temperature is increased, water is removed well by water evaporation and gas diffusion. Therefore, it can be expected that flooding is solved at higher temperature. In this study, effect of operating temperature on performance in an air-breathing proton exchange membrane fuel cell is examined. As a result, it is found that the performance of the system is improved until specific temperature as operating temperature increased. The reason for enhanced performance is found as effective water removal through the analytical approach for water contents in gas diffusion layers.
멤브레인 단락 실험을 통한 GDL 기재 구조가 막 손상에 미치는 영향에 관한 연구
정애리(Aeri Jung),백경돈(Kyung Don Baik),공임모(Im Mo Kong),김민수(Min Soo Kim) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
For the polymer electrolyte membrane fuel cell which is used in vehicles, the compression pressure is applied high to reduce the contact resistance among the cell components such as a membrane electrode assembly (MEA), a gas diffusion layer (GDL), and a bipolar plate. However, an excessive high compression pressure can be generated a durability problem because the carbon fibers in the GDL may penetrate into the membrane through the catalyst layer of the MEA. In this study, the membrane-shorting test is conducted with three different types of the GDL. The type one (GDL-1) and two (GDL-2) have the same micro-porous layer coating with different macro-porous substrates. In comparison with the different macro-porous substrate type of GDLs, a carbon felt type reached the ohmic shorting region more faster than a carbon paper type. And, it is also found that the MEA reaches the ohmic shorting point later than a bare membrane.
고분자 전해질막 연료전지에서 수소 크로스오버에 의한 물 생성에 관한 연구
공임모(Im Mo Kong),정애리(Aeri Jung),김민수(Min Soo Kim) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
Hydrogen crossover through a membrane is an inevitable phenomenon in a polymer electrolyte membrane fuel cell (PEMFC). Also, the hydrogen crossed over from anode side is directly reacted with oxygen at cathode side. As a result of direct reaction, water is produced and it hydrates the membrane. Thus, the membrane is not dried completely due to the hydrogen crossover and its direct reaction with oxygen. In this study, hydrogen concentration at the cathode outlet was measured with the mass spectrometer under OCV condition when dry N2/H2, Air/H2 and Air/Air were supplied. Then, direct reaction rate and the amount of produced water were calculated. As a result, it was found that the operating temperature is a dominant parameter on direct reaction rate while the flow rate is negligible.
공급 기체의 유동 배열이 자가가습형 고분자전해질막 연료전지의 동적 성능에 미치는 영향
공임모(Im Mo Kong),정애리(Aeri Jung),김민수(Min Soo Kim) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Operating proton exchange membrane fuel cells (PEMFCs) without external humidifier has many advantages such as system simplicity, reduced system volume and weight, and reduced blower power. For these reason, many researchers have attempted to operate PEMFCs with dry gases and have evaluated the effect of operating parameters including flow arrangements. However, most of them were only focused on the steady-state performance of the fuel cell. In this study, we evaluated the dynamic performance of the fuel cell after start-up with different flow arrangements of co-flow and counter flow. During the experiments, dry gases were supplied to the fuel cell. The results showed that the cell performance is recovered more quickly with the counter-flow arrangement. In addition, with counter-flow arrangement, the cell showed better steady-state performance.