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Analysis of compassionate care experience among clinical nurses using grounded theory
Hwa Soon Kim,Eun Ha Roh,Kyungsun Moon,Jihee Kim,Youngjin Lee,Hwa Soon Kim,Eun Ha Roh,Kyungsun Moon,Jihee Kim,Youngjin Lee 한국간호과학회 2021 한국간호과학회 학술대회 Vol.2021 No.10
Aim: The aim of this study was to explore the meaning of the experience of providing compassionate care to patients admitted to acute hospitals. Method: This study design was qualitative research that applies the evidence theory method. The participants were clinical nurses who experienced direct patient care for more than three months (N=13). The data collection was an in-depth face-to-face interview from July 2020 to February 2021. The number of interviews per participant was one time, and the interview time was 30-60 minutes, which was recorded after obtaining informed consent, and the researcher immediately transcribed and analyzed after the interview. The data analysis was used the Strauss and Corbin (2008) method. Result: The compassionate care experience of clinical nurses was derived from 78 concepts, 33 subcategories and 16 categories. The central phenomenon representing compassionate care among clinical nurses was derived from ‘holistic care that understands disease progression’. The causal conditions of this process were shown to be "immersion into the patient’s difficult feelings" and ‘sensitive awareness of the patient’s physical and emotional needs". Contextual conditions affecting the phenomenon were ‘experience a patient’s emotional vortex’, ‘workload pressure and time limits’, ‘lack of warmth and tolerance of the nurse’ and intervening conditions were "advice from colleagues’, "training through experience and learning". The interaction strategies were "recognizing emotions", "trying to communicate", priority pain control", "stay by your side by side’, and "to provide information, and the results were "positive changes in the patients", "the satisfaction and belief of a nurses", and "be burned out". Conclusion: Based on the results of this study, the ultimate consequence of compassionate care was enhancing job satisfaction and professional beliefs from the nurse"s perspective and leading to patient cooperation and positive health outcomes from the patient"s perspective. It is expected that such nurses will be utilized as the cornerstone for developing the body of knowledge related to compassion-based care.
Current Feedback with Decoupling Scheme for Single-Phase UPS Using a Single Current Sensor
Youngjin Lee,Younghoon Cho,Jung-Muk Choe,Gyu-Ha Choe 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6
This paper proposes an inductor current feedback plus load current decoupling scheme for single-phase uninterruptible power supply (UPS) applications using a single current sensor. At first, the inductor current feedback with and without load current decoupling are compared in the view point of the output voltage control performance. The output impedance of the entire control system is analytically compared by using the derived model. From this analysis, it is shown that using the load current decoupling is better than not using the load current decoupling in voltage regulation performance. In addition to this analysis, a current sensing technique is proposed to measure the inductor and load current with a single current sensor. The proposed sensing method is shown that a load current and a branch current are simultaneously sampled by using a single current sensor at both the peak and valley point of the pulse-width modulation (PWM) carriers regularly, and then the inductor current and load current are reconstructed with the proposed algorithm in a single PWM cycle. Accordingly, the number of sensor and potential current sensing error can be reduced.
분자-연속체 하이브리드 기법을 이용한 구조물이 있는 나노 채널에서의 Couette 유동에 대한 수치적 연구
김영진(Youngjin Kim),정명근(Myunggeun Jeong),하만영(Man Yeong Ha) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
Molecular-continuum hybrid method is developed for simulation micro-and nano-scale fluid where continuum fluidics cannot predict. Molecular dynamics simulation is used near the solid surface which connot be predicted by continuum fluidics and Navior-Stokes equation is used in other regions. We carried out molecular-continuum hybrid method to investigate effect of solid-liquid interaction and effect of roughness in a nano channel. We find that the surface energy such as solid-liquid interaction influence on boundary condition and the surface nanostructures have a effect on friction of the liquid nanoflow.
Kim, Youngjin,Koo, Dongho,Ha, Seongmin,Jung, Sung Chul,Yim, Taeeun,Kim, Hanseul,Oh, Seung Kyo,Kim, Dong-Min,Choi, Aram,Kang, Yongku,Ryu, Kyoung Han,Jang, Minchul,Han, Young-Kyu,Oh, Seung M.,Lee, Kyu T American Chemical Society 2018 ACS NANO Vol.12 No.5
<P>Lithium-oxygen (Li-O<SUB>2</SUB>) batteries are desirable for electric vehicles because of their high energy density. Li dendrite growth and severe electrolyte decomposition on Li metal are, however, challenging issues for the practical application of these batteries. In this connection, an electrochemically active two-dimensional phosphorene-derived lithium phosphide is introduced as a Li metal protective layer, where the nanosized protective layer on Li metal suppresses electrolyte decomposition and Li dendrite growth. This suppression is attributed to thermodynamic properties of the electrochemically active lithium phosphide protective layer. The electrolyte decomposition is suppressed on the protective layer because the redox potential of lithium phosphide layer is higher than that of electrolyte decomposition. Li plating is thermodynamically unfavorable on lithium phosphide layers, which hinders Li dendrite growth during cycling. As a result, the nanosized lithium phosphide protective layer improves the cycle performance of Li symmetric cells and Li-O<SUB>2</SUB> batteries with various electrolytes including lithium bis(trifluoromethanesulfonyl)imide in <I>N,N</I>-dimethylacetamide. A variety of <I>ex situ</I> analyses and theoretical calculations support these behaviors of the phosphorene-derived lithium phosphide protective layer.</P> [FIG OMISSION]</BR>