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김덕진,정정열,곽호영,Kim, Duck-Jin,Jung, Jung-Yeul,Kwak, Ho-Young 대한기계학회 2003 大韓機械學會論文集B Vol.27 No.1
Exergetic and thermoeconomic analyses were performed fer a 137-MW steam power plant. In these analyses, mass and energy conservation laws were applied to each component of the system. Quantitative balance of the exergy and exergetic cost for each component, and for the whole system was carefully considered. The exergo-economic model, which represented the productive structure of the system was used to visualize the cost formation process and the productive interaction between components. The computer program developed in this study can determine production costs of power plants, such as gas-and steam-turbines plants and gas-turbine cogeneration plants. The program can also be used to study plant characteristics, namely, thermodynamic performance and sensitivity to changes in process and/or component design variables.
Fabrication of High-Quality $SmBa_{2}Cu_{3}O_{7-{\delta}}$ Thin Films by a Modified TFA-MOD Process
김덕진,송규정,문승현,박찬,유상임,Kim Duck-Jin,Song Kyu-Jeong,Moon Seung-Hyun,Park Chan,Yoo Sang-Im The Korean Superconductivity Society 2005 Progress in superconductivity Vol.7 No.1
We report a successful fabrication of high-quality $SmBa_{2}Cu_{3}O_{7-{\delta}}$ (SmBCO) thin films on $LaAlO_3$(LAO)(100) single crystalline substrates by a modified TFA-MOD method. After the pyrolysis heat treatment of spin-coated films up to $400^{\circ}C$, SmBCO films were fired at various temperatures ranging from 810 to $850^{\circ}C$ in a reduced oxygen atmosphere (10 ppm $O_2$ in Ar). Optimally processed SmBCO films exhibited the zero-resistance temperature ($T_{c,zero}$) of 90.2 K and the critical current density ($J_c$) of $0.8\;MA/cm^2$ at 77K in self-field. Compared with the $J_c$ values (normally, > $2\;MA/cm^2$ at 77 K) of MOD-TFA processed YBCO films, rather depressed $J_c$ values in SmBCO films are most probably attributed to the existence of ${\alpha}$-axis oriented grains.
임금근로자의 우울관련요인: 주관적 건강과 스트레스 인지를 중심으로
김덕진 ( Duck Jin Kim ),이정섭 ( Jeong Seop Lee ) 한국산업보건학회 2016 한국산업보건학회지 Vol.26 No.1
Objectives: The purpose of this study is to analyze factors associated with depression among wage earners by subjective health and stress perception. Methods: The study subjects include 1,787 wage earners(aged 19 and older) who are currently working, using data from the 2014 National Health and Nutrition Survey. Data were analyzed using frequency test, t-test, ANOVA and multiple regression. Results: Multiple regression analysis showed that perceived stress level, subjective health status, age, monthly household income, sex, marital status, average daily sleeping time, and whether type of employment was regular or non-regular were significantly related to depression. Conclusions: It is necessary to develop an appropriate mental health promotion program and to manage prevention of depression at the national level.
간호대학생의 의사소통능력과 비판적 사고성향이 문제해결능력에 미치는 영향
김덕진 ( Kim Duck-jin ),윤석희 ( Yun Seok-hee ) 대한의료커뮤니케이션학회 2016 의료커뮤니케이션 Vol.11 No.2
Purpose: The purpose of this study was to investigate the influence of communication competence and critical thinking disposition on problem-solving skills of nursing student. Method: Data were collected from 169 nursing students by means of self reported questionnaires about communication competence, critical thinking disposition and problem-solving skills from September 5 to 13, 2016. Results: There were positive correlations between communication competence, critical thinking disposition and problem-solving skills. The critical thinking disposition (β=.41, p<.001), communication competence (β=.35, p<.001) and male (β=.13, p=.015) were significant predictors of problem-solving skills. Conclusion: It is necessary to develop an effective intervention program to improve nursing student`s problem-solving skills by critical thinking disposition and communication competence.
코로나19 팬데믹 상황에서 간호학 임상실습 교수의 온라인 시뮬레이션 지도 경험
김덕진(Kim, Duck Jin),유선영(You, Sun Young) 학습자중심교과교육학회 2022 학습자중심교과교육연구 Vol.22 No.7
Objectives The purposes of this study were to comprehensively and in-depth understanding of the nature of the nursing clinical practice faculty s experience of online simulation instruction of the COVID-19 pandemic. Methods Participants had 1:1 in-depth interviews with 10 clinical practice faculty in nursing who had experience in instruction clinical practice through online simulations of the COVID-19 pandemic. Data collection was conducted for 3 weeks from January 4 to January 25, 2021. The collected data were analyzed using Colaizzi s seven-step phenomenological qualitative analysis method. Results As a result of analyzing the online simulation teaching experience of the nursing clinical practice professor, 31 topics, 9 topic collections, and 3 categories were derived. The three derived categories were ‘Chaos that came with COVID-19’, ‘Finding your way in the chaos of the COVID-19 pandemic’, and ‘Taking one step further over difficulties’. Conclusions As the COVID-19 pandemic continues, face-to-face practice in the Department of Nursing has been changed to non-face-to-face to prevent the spread of infectious diseases. Online simulation has become an alternative practice method that can be applied in infectious disease situations. Based on this study, in order for online simulation to become an effective practice that can be applied to nursing students even in the untact era, it is required to develop and apply a program that reflects the domestic clinical field situation and the opinions of clinical practice professors. 목적 본 연구의 목적은 코로나19 팬데믹 상황에서 간호학 임상실습 교수의 온라인 시뮬레이션 지도에 대한 경험의 본질을 총체적이고 심층적으로 이해하고자 하였다. 방법 참여자는 코로나19 팬데믹 상황에서 온라인 시뮬레이션으로 임상실습을 지도한 경험이 있는 간호학 임상실습 교수 10명을 대상으로 1:1 심층면담하였다. 자료수집은 2021년 1월 4일부터 1월 25일까지 3주간 진행되었다. 수집된 자료는 Colaizzi의 7단계 현상학적 질적 분석방법을 활용하였다. 결과 간호학 임상실습 교수의 온라인 시뮬레이션 지도 경험에 대해 분석한 결과 31개의 주제, 9개의 주제모음, 3개의 범주로 도출되었다. 도출된 3개의 범주는 ‘코로나19와 함께 온 혼란’, ‘코로나19 팬데믹 혼란 속에 길 찾기’, 그리고 ‘어려움 딛고 한 걸음 더 나아가기’로 나타났다. 결론 코로나19 팬데믹이 지속되는 상황에서, 감염병의 확산을 차단하기 위해 간호학과 대면 실습은 비대면으로 변경되었다. 온라인 시뮬레이션은 감염병 상황에서 적용할 수 있는 대체실습의 방안이 되었다. 본 연구를 토대로 언택트 시대에도 온라인 시뮬레이션이 간호학과 학생들에게 적용할 수 있는 효율적인 실습이 되기 위해 국내 임상현장 상황과 임상 실습교수의 의견이 반영된 프로그램 개발과 적용이 요구되어 진다.
간호대학생의 자아탄력성과 자기효능감이 전공만족도에 미치는 영향
김덕진(Kim, Duck Jin),이정섭(Lee, Jeong Seop) 한국간호교육학회 2014 한국간호교육학회지 Vol.20 No.2
Purpose: The purpose of this study was to investigate the influence of ego-resilience and self-efficacy on satisfaction in major of nursing student. Method: Data were collected from 275 nursing students by means of self reported questionnaires about ego-resilience, self-efficacy and satisfaction in major from December 3 to 20, 2012. Results: There were positive correlations between ego-resilience, self-efficacy and satisfaction in major. The optimistic attitude in ego-resilience (β=.56, p<.001), an associates degree (β=.38, p<.001), suitable to aptitude (β=.17, p<.001), social self-efficacy (β=.14, p=.039) and high employment rate (β=.12, p=.033) were significant predictors of satisfaction in major. Conclusion: It is necessary to develop an effective intervention program to improve nursing student’s ego-resilience, self-efficacy and satisfaction in major of nursing student.