• Journal of Korean Port Research
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• v.15 no.1
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• pp.37-46
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• 2001

Fuzzy logic control(FLC) is composed of three parts : fuzzy rule-bases, membership functions, and scaling factors. Well-defined fuzzy rule-base should contain proper physical intuition on the plant, so are needed lots of experiences of the skillful expert. When membership functions are considered, some parameters on the memberships function such as function shape, support, allocation density should be selected well. The rule of scaling factors is 'scaling'(amplifying or reducing) for both input and output signals of the FLC to fit in the membership function support and to operate the plant intentionally. To get a better performance of the FLC, it is necessary to adjust the parameters of the FLC. In general, the adaptation of the scaling factors is the most effective adjustment scheme, compared with that of the fuzzy rule-base or membership function parameters. This study proposes the adaptation scheme of the scaling factors. When the adaptation is performed on-line, the stability of the adaptive FLC should be guaranteed. The stable FLC system can be designed with stability analysis in the sense of Lyapunov stability. To adapt the scaling factors for the error signals, the concept of the conventional MRAC would be introduced into slightly modified form. A tracking accuracy of the control system would be enhanced by the modified shape and support of the membership function. The simulation is achieved on the pilot plant with the hydraulic steering control of a UCT(Unmanned Container Transporter) of which modeling dynamics have lots of severe uncertainties and modeling errors.

• Journal of the Korea Convergence Society
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• v.10 no.1
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• pp.317-328
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• 2019

The purpose of this study is to understand the experience and adaptation of North Korean defector who acquired Korean nurse license and living as a nurse in depth through qualitative data. The study sampled 7 North Korean defector nurses who can express their experiences well, and applied Colaizzi's phenomenological qualitative research method to draw out 5 theme clusters and 14 sub categories. As the result, subjects had proud of becoming nurse in Korea, acknowledged and accepted differences from Korean, wanted to be recognized as the Korean people, and they expected to becoming true Korean nurse by being integrated into Korean society with their passion and challenge toward a new dream. This study has helped to apprehend essence of experience of North Korean defectors as a nurse after acquiring Korean nurse license, and it is expected that it could provided basic data to realistically approach to seeking measures for the subjects to successfully adjust as Korean nurses.

• Journal of the Korea Convergence Society
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• v.10 no.1
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• pp.353-360
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• 2019

Purpose: The depression of the elderly in recent years has been increasing every year due to the remarkable change of the psychological function, which has a great influence on the life. Depression which is a powerful predictor of suicide in elderly people, causes various psychological and social problems. In this study, we try to understand convergently about the adaptation experiences of the depressed elderly with suicidal ideation. Procedures and Methods: Seven elderly people with a GDS(Geriatric Depression Scale) score of ${\geq}17$ and a SSI(Scale for Suicidal Ideation) score of ${\geq}9$ in the self-help group were interviewed until theoretical saturation. Data were analyzed based on the Grounded theory method. Results and Contribution: Depressed elderly recognized the importance of being the center of their lives through interactions with peer groups and they started to embrace their lives. Further studies: Empirical studies on positive interactions with peer groups affecting the adjustment experience of depressed elderly should be expanded and continued.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.7
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• pp.499-509
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• 2016

The number of female government employees is increasing steadily; therefore, the importance of their effective management is also increasing. Recently, female government employees have organized and exploited their social networks to achieve career success. To obtain a better understanding of the consequences of social networking and its impact on female government employees, 262 female employees were asked to provide details about their experiences and attitudes regarding networking behavior (internal and external networking) and how they influenced affective commitment and individual adaptation performance. The results confirmed that social networking significantly increases emotional sharing, and leads to high levels of affective commitment and individual adaptation performance. The moderating roles that positive psychological capital play in the relationships between social networking (internal and external) and emotional sharing were also investigated. The results confirmed that positive psychological capital enhances the impact internal social networking has on affective commitment and individual adaptation performance. Managerial implications for developing effective female employee management strategies were provided for government managers. Based on these results, the theoretical and practical implications of the research findings are discussed, and recommendations for future research are provided.

• Journal of Korean Academy of Nursing Administration
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• v.9 no.3
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• pp.305-314
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• 2003

Purpose: The purpose of this study is to examine nurses' turnover experiences and to provide basic information for developing turnover intervention program for effective human resources management. Methods: This study is an inductive, descriptive phenomenological research that uses profound interviews and observations. The subjects of the study were nurses retired from a hospital. Results: The themes were classified into the three theme clusters. The first theme was about 'deepening inside wound' which was described as experiencing stresses due to introversion, feeling a heavy burden about responsibilities as experienced nurses, feeling guilty about limits of performance and hurt about reproaches by seniors and having conflicts with physicians. The second theme cluster focused on 'powerlessness as time goes', which was stated as having difficulty in adaptation to the new rotated wards, feeling tired and having no spare time and difficulty in night duty, experiencing stagnation and powerlessness and feeling disappointed about inadequate rewards. The third was about 'can't find the exit' which were expressed with wanting to change the speciality because of concerns about future, having affection to motherhood, feeling conflict over the nursing profession itself, concentrating on the matter of turnover and facing related personal situations, and regretting turnover. Conclusion & Suggestions: Considering all these experiences, field managers in nursing should build up a support system that helps nurses overcome risks related to decision-making about turnover. In addition, nurse managers need to develop a human resources development program in which competent nurses are continuously won over through education and counseling.

• Journal of Korean Academy of Nursing
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• v.48 no.5
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• pp.601-621
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• 2018

Purpose: This study aimed to synthesize the caring experiences of Korean family members of patients with dementia through a qualitative meta-synthesis method. Methods: By searching through nine Korean and English databases, we compared 37 qualitative studies on caring experiences of family members of patients with dementia. The selected studies were synthesized through meta-synthesis, proposed by Sandelowski and Barroso (2007). Results: The meta-synthesis elicited four themes: tough life due to care for patients, changes in relationships, adaptation to caregiver's roles, and new perspectives of life through personal growth. Caregivers were shocked when a sudden diagnosis of dementia was made prior to any preparation on their part. They were tied to their patients all the time and their mind and body got exhausted. Their relationship with patients began to change and they looked at them differently. They experienced conflicts with the other non-caring family members and were alienated from them. They were also socially isolated. However, by building their own care strategies and utilizing social resources, they gradually adapted to their caregiver roles. Finally, they experienced personal growth and acquired a new perspective toward life by accepting their roles and finding meaning in their lives. Shifting the caregiver's centricity from themselves to the patient was the process of becoming human beings who actively constructed their realities while giving meaning to their painful lives and interacting with the environment. Conclusion: The results of the study can be useful for nurses in understanding the experiences of caregivers of the patients with dementia and in providing them with practical interventions.

• The Journal of the Convergence on Culture Technology
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• v.4 no.4
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• pp.273-277
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• 2018

This study attempted to describe the essential structure of lived experience of a students trans ferring into the nursing program. A study on the experience of students who have a major in this of health or who have experience in a medical institution is aimed at identifying the nature of incorporating nursing into each individual. The experiences were analyzed and the meaning of the experiences was understood by applying the phenomenolgical Analysis method of Colaizzi. The total number of people who majored in health care and five experienced medical institutions was nine, which resulted four themes and 14 central beauty. Based on the results of this study, it will provide basic materials for fostering professional nursing personnel at various nursing sites by understanding the nursing departments and experiences of students with experience in the health care system.

• Journal of Industrial Convergence
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• v.18 no.6
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• pp.85-98
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• 2020

Purpose: This study was conducted to confirm the nature of the pandemic experience of an infectious disease among non-confirmed COVID-19 nursing students. Methods: From April 14 to April 23, 2020, data were collected through individual in-depth interviews with eight nursing students, and the data were analyzed using Colaizzi's phenomenological analysis methodology. Results: Seven categories emerged through experiences of pandemic infectious diseases among nursing students. The specific categories are 'the continuation of daily life containing worries', 'struggle in daily life lost by COVID-19', 'conflict in fear and expectation', 'the fight against loneliness', 'confusion and adaptation to the changed class management policy', 'improving the ability to cope with a new phase', 'a springboard for growth'. Conclusion: Nursing students suffered psychosocial difficulties in a pandemic situation, but they adapted and led them to a positive direction. they lived as an opportunity to have time to check their career identity and tried to supplement their lives. We propose a study on the experiences of nursing students who have experienced self-isolation and the nature of nursing students' experiences in prolonged COVID-19 situations.

• Journal of Preventive Medicine and Public Health
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• v.55 no.6
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• pp.578-585
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• 2022

Objectives: This study aimed to adapt the survey questionnaire designed by Moens et al. (2021) and determine the validity and reliability of the Arabic version of the survey in a sample of the Saudi population experiencing teleworking. Methods: The questionnaire includes 2 sections. The first consists of 13 items measuring the impact of extended telework during the coronavirus disease 2019 (COVID-19) crisis. The second section includes 6 items measuring the impact of the COVID-19 crisis on selfview of telework and digital meetings. The survey instrument was translated based on the guidelines for the cultural adaptation of self-administrated measures. Results: The reliability of the questionnaire responses was measured by Cronbach's alpha. The construct validity was checked through exploratory factor analysis followed by confirmatory factor analysis (CFA) to further assess the factor structure. CFA revealed that the model had excellent fit (root mean square error of approximation, 0.00; comparative fit index, 1.0; Tucker-Lewis index, 1; standardized root mean squared residual, 0.0). Conclusions: The Arabic version of the teleworking questionnaire had high reliability and good validity in assessing experiences and perceptions toward teleworking. While the validated survey examined perceptions and experiences during COVID-19, its use can be extended to capture experiences and perceptions during different crises.

• The Journal of Korean Academic Society of Nursing Education
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• v.28 no.1
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• pp.57-69
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• 2022

Purpose: This study was performed to explore and describe the overall clinical practice adaptation experiences among nursing students during the COVID-19 pandemic. Methods: This qualitative study applied the grounded theory method by Corbin and Strauss. Data were collected from May to August 2021 through individual in-depth interviews with 14 nursing students from three universities in B metropolitan city. Results: From open coding, 20 sub-categories and 10 categories were identified. Analysis revealed that the core category was the process of "keeping the place of learning while adhering to the restrictions of the era of pandemic" and that it consisted of four phases: confusion, withdrawal, adjustment, and growth. Through this process, participants utilized various action/interactional strategies such as "shifting to positive thinking," "building a shield to protect oneself," and "focusing on learning." The consequences of these strategies were "adapting to the reality of the infectious disease situation" and "strengthening a foothold to grow as a future nurse." Conclusion: An in-depth understanding of nursing students' experiences of adapting to clinical practice during the COVID-19 pandemic will guide nursing educators to promote effective teaching strategies to better support nursing students in a time of infectious disease crisis.