• Journal of the Korean Applied Science and Technology
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• v.41 no.3
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• pp.685-693
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• 2024

This study is a descriptive study to understand the degree of positive psychological capital, clinical practice stress, and career identity of nursing students, and to understand the factors influencing career identity. The fourth graders of the department of nursing at two universities located in U City and G City were selected as subjects. Descriptive statistics, t-test, ANOVA, pearson correlation coefficient, and multiple regression data were analyzed with the SPSS 21.0 program. As a result of the study, positive psychological capital had a positive correlation with career identity, and clinical practice stress had a negative correlation with career identity. The factors influencing career identity were clinical practice stress, major satisfaction, positive psychological capital, and gender, and the explanatory power was 31%. Therefore, it is necessary to develop and apply educational programs that can improve positive psychological capital and reduce clinical practice stress as a strategy to improve the career identity of nursing students.

• Journal of the Korean Society for Nondestructive Testing
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• v.32 no.5
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• pp.585-596
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• 2012

PVDF(poly vinylidene fluoride) and P(VDF-TrFE)(poly vinylidene fluoride-tetrafluoroethylene) are the typical piezoelectric polymers with unique properties. Even they are inferior to conventional piezoelectric ceramics PZT in electromechanical conversion efficiency and interior loss, though they are superior in receiving sensitivity and frequency bandwidth. Their acoustic impedances are relatively close to water or biological tissue and it is easier to make thin film than other piezoelectric materials. Futhermore, the film is so flexible that it is easy to attach on a complex surface. Those properties are suitable for the ultrasound transducers which are useful for medical and biological application, so that various types of polymer transducers have been developed. In this paper, several important considerations for design and fabrication of piezoelectric polymer transducers were described and their effect on the transducer performance were demonstrated through the KLM model analysis. Then, it was briefly reviewed about the structures of the polymer transducers developed for obtaining images as well as the characteristics of the images in several important medical and biological application fields.

• Journal of the Korean Applied Science and Technology
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• v.39 no.3
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• pp.407-416
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• 2022

This study was attempted to determine how knowledge and fear of COVID-19 affects job-seeking anxiety of nursing students in the COVID-19 pandemic situation. The subjects of this study were 157 students from the 1st to 4th graders attending nursing universities. Data collection was collected from December 9, 2021, to February 21, 2022. Data were analyzed with the SPSS/WIN 24.0 program. As a result of this study, the job-seeking anxiety of the subjects was significantly correlated with the fear of COVID-19(r=.386, p<.001). And, influencing factors the job-seeking anxiety of nursing students identified in the order of fear of COVID-19, satisfaction with college. Therefore, it is necessary to develop a program that can reduce the fear of COVID-19 in order to lower the job-seeking anxiety of nursing students.

• Journal of the Korean Applied Science and Technology
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• v.39 no.1
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• pp.42-51
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• 2022

This study was conducted to identify the factors affecting the problem solving ability in nursing students. Method: The subjects of this study were 226 nursing students from two universities located in G and C provinces. The collected data were analyzed by t-test, ANOVA, Correlation Coefficient, and Multiple Regression Analysis. Results: As a result of multiple regression analysis, the significant predictors of problem solving ability of nursing students were critical thinking disposition(β=.490, p<.001) and self-directed learning ability(β=.355, p=<.014). Problem solving ability was explained 61.9% of variance in critical thinking disposition and self-directed learning ability. Conclusion: The results of this study showed that self-directed learning ability and critical thinking disposition in nursing students were the influential factor on problem solving ability. Therefore, the results of this study suggest that it is necessary to find ways to improve critical thinking disposition and self-directed learning ability in order to improve problem solving ability of nursing students, and it is considered to be useful as basic data for developing education programs to improve problem solving ability.

• Journal of the Korean Applied Science and Technology
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• v.39 no.1
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• pp.74-83
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• 2022

The purpose of this study was to investigate the effects of dysmenorrhea and stress on quality of sleep in nursing students. The subjects of this study were 248 nursing students and data collection was from April 20 to May 18, 2021. Data was analyzed using the SPSS/WIN 24.0 program by descriptive statistics, Pearson's correlation, multiple regression analysis. There was a positive correlation between dysmenorrhea(r=.20, p<.001) and stress(r=.24, p<.001). Grade, stress and dysmenorrhea were found to be factors influencing quality of sleep among nursing students. The results of this study suggest that it is necessary to develop some programs that include factors such as grade, stress and dysmenorrhea for nursing students' quality of sleep.

• Journal of the Korean Applied Science and Technology
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• v.40 no.3
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• pp.521-533
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• 2023

The purpose of this study was to investigate the effect on the clinical competence by the face-to-face, non-face-to-face clinical practice stress and the stress coping. A survey was conducted among nursing students of university in Seoul and Chungcheong City from June 10 to July 10, 2021. 201 copies were included in the final data analysis, Pearson's correlation coefficient and hierarchical regressions was used. As a result, in the first stage, nursing students grades, major satisfaction, and face-to-face practice satisfaction explained 19.4% of their clinical performance ability, in the second step, stress coping was added to increase explanatory power by 19.6% allowing a total of 39.0% of randomness to be explained. Therefore, this study could be used as a basic data for the counseling, development, and education programs for stress coping to increase clinical competence.

• Journal of the Korean Applied Science and Technology
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• v.41 no.1
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• pp.138-148
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• 2024

The purpose of this study is a descriptive research study to confirm the relationship between perception of strength, academic self-efficacy and major satisfaction of nursing college students and to identify factors influencing major satisfaction. The subjects of this study were 172 nursing college students located in G City, and data collection was conducted from November 7 to December 21, 2022. The collected data were analyzed by descriptive statistics, t-test, ANOVA, Pearson's correlation coefficients and multiple regression analysis using SPSS/WIN 28.0 program. As a result of the study, major satisfaction had a significant positive correlation with perception of strength (r=.31, p<.001) and academic self-efficacy (r=.62, p<.001). Factors affecting major satisfaction of nursing college students were academic self-efficacy (𝛽=.53, p<001.) and advice from others as motivation of choosing major (𝛽=-.20, p=.002), which explained 42.6% of variance. The results of this study will be useful used to develop strategies to improve the major satisfaction of nursing college students. In the future, a follow-up study that can expand the subjects and explain the major satisfaction of nursing college students is suggested.

• Polymer Science and Technology
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• v.24 no.5
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• pp.474-480
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• 2013

• Proceedings of the Korean Vacuum Society Conference
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• 2011.02a
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• pp.259-260
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• 2011

대기압 플라즈마는 멸균과 살균, 지혈, 피부재생, 치아 미백 등 여러 의학 분야를 대상으로 그 효과를 나타내고 있으며, 플라즈마 장비를 만들어 내기 위해 부피가 큰 진공 장비가 필요하지 않다는 점에서 대기압 플라즈마는 그 활용과 효과에 있어 큰 기대를 받고 있다. 대기압에서 플라즈마는 다양한 주파수를 이용하여 만들어져 왔으며, 본 연구실에서 연구하고 있는 수백 MHz-수 GHz 대역의 파워를 사용하는 플라즈마의 경우 대기압 플라즈마를 의학 분야에 사용할 때 만족해야 할 조건들에 만족하는 특성을 보여준다. 기존의 고주파를 사용하는 장비의 경우 추가적인 Matching 장비로 인해 플라즈마를 만들기 위해 큰 장비와 높은 파워가 필요한 단점이 있었다. 하지만 이 마이크로웨이브 장비는 전송선 이론을 기반으로 장비 자체가 구조적인 Matching이 이루어 지도록 설계되었다(그림 1). 즉, 추가적인 Matching 장비의 필요 없이 외부에서 파워를 주는 것만으로 플라즈마를 발생 시킬 수 있으며, 50% 이상의 파워 효율을 보여준다. 또한 그 크기도 손에 쥐고 사용할 수 있을 볼펜 정도의 크기이며, 3W의 정도의 저 전력으로 플라즈마를 발생 시켰다. 높은 에너지를 가지는 전자들은 공급되는 기체뿐만 아니라, 주변 공기와의 반응하여 여러 응용분야에 적합한 활성 종을 다량 만들어내게 된다. 본 연구실의 강점인 플라즈마 시뮬레이션으로 얻은 결과에서 주파수가 올라 갈수록 높은 에너지를 가지는 전자들이 많아지는 것을 보여준다. 그리고 발생시킨 플라즈마의 광학 특성에서도 생의학 분야에 적합한 많은 활성 종들이 발생 되는 것을 확인하였다. 일반적으로 의학 분야에 사용되는 플라즈마의 경우 플라즈마에서 발생하는 열에 의한 피해를 최소화 하는 것이 중요하다. 마이크로웨이브 플라즈마의 경우, 그 플라즈마의 온도가 50$50^{\circ}$C 미만으로 의학 분야에 사용하기 적합하다. 또한 구동 주파수가 올라갈수록 플라즈마를 유지하는데 필요한 전압이 상대적으로 낮아지게 되는데, 이는 전기적 쇼크 등 플라즈마 의용에서 발생하는 안전성 문제에 있어서도 마이크로 웨이브 장비가 좋은 점이다. 본 플라즈마 장비를 구동하기 위한 손바닥 크기 정도의 소형의 전용 파워 장치를 개발함으로써 저전력 소형 플라즈마 장치를 개발하는 것을 목표로 하고 있다. 마이크로 웨이브 장비는 여러 가지 분야에서 그 효과를 검증 받았다. 혈액 응고 실험에서 30초 정도의 짧은 처리만으로도 자연 응고에 비해 탁월한 지혈 효과를 보여줬다 (그림 2). 충치를 발생시키는 대표적인 구강균인 S.mutans의 살균 실험에서 Ti02와의 복합적인 처리를 통해 30초 미만의 처리로 처리하지 않은 것에 비해 10-6 만큼의 줄어드는 살균 효과를 보여줬다. 뿐만 아니라 치아의 미백에 있어서도 탁월한 효과를 나타냈다. 현재 본연구실에서는 마이크로 웨이브 장비의 기본적인 구조를 응용하여, 좀더 넓은 영역을 처리할 수 있는 대면적 마이크로 웨이브 장비를 위한 연구를 수행 중이다.

• Journal of the Korean Applied Science and Technology
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• v.39 no.4
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• pp.542-551
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• 2022

The purpose of this study is a descriptive survey research in order to grasp the relationship between learning satisfaction, self-efficacy and critical thinking of nursing students and the influence factors of critical thinking who have experienced non-face-to-face online lectures. Participants were 191 nursing students in G city. Data collection was conducted from May 2 to 30, 2022. Data were collected with structured questionnaires and analyzed using t-test, ANOVA, Pearson's correlation analysis, and multiple regression analysis. As a result of there were positive correlations between the learning satisfaction (r=.20, p=.005) and self-efficacy (r=.61, p<.001) that critical thinking. Factors affecting critical thinking of nursing college students were self-efficacy (𝛽=.66, p<.001), major of interest-very interesting (𝛽=.41, p<.001), learning satisfaction (𝛽=-.31, p<.001), Grade-third (𝛽=.26, p<.001), major of interest-interesting (𝛽=.21, p=.029), Grade-second (𝛽=.16, p<.001) and which explained 60.1% of the variance. Based on the results of this study, in order to promote critical thinking among nursing college students, it is necessary to by grade and the interest of major individual counseling and guidance. Also develop and implement various programs that can improve self-efficacy and class satisfaction.