• The Journal of Korean Society for School & Community Health Education
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• v.23 no.4
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• pp.63-79
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• 2022

Objectives: The purpose of this study is to reveal the phenomenological meaning and experience of alcohol craving experienced by alcoholics through qualitative research. Methods: From November 8, 2020 to October 10, 2022, in-depth interviews were conducted with four recovering alcoholics within two years of a single week who were diagnosed with alcoholism in the past and had been hospitalized for alcoholism problems. The data were analyzed using phenomenological qualitative research methods. Results: The alcohol craving experienced by alcoholics worked in connection with the life of alcoholics. Alcohol intensity was not entirely determined by external factors, but varied by the individual's internal state and circumstances surrounding the individual, and cravings were found to be classified into when control and intervention were possible. Also, the power to neutralize alcohol cravings was a warm 'self-compassion' mind. Conclusion: This study presented a new perspective on alcohol craving, and based on this perspective, the necessity of developing an alcohol addiction prevention program and a recurrence prevention program was presented. In addition, the basis for emphasizing the necessity of complete abstinence in health education services for preventing alcohol and preventing recurrence in the community was presented.

• Nuclear Engineering and Technology
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• v.55 no.3
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• pp.839-849
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• 2023

The development of automation technology to reduce human error by minimizing human intervention is accelerating with artificial intelligence and big data processing technology, even in the nuclear field. Among nuclear power plant operation modes, the startup and shutdown operations are still performed manually and thus have the potential for human error. As part of the development of an autonomous operation system for startup operation, this paper proposes an action coordinating strategy to obtain the optimal actions. The lower level of the system consists of operating blocks that are created by analyzing the operation tasks to achieve local goals through soft actor-critic algorithms. However, when multiple agents try to perform conflicting actions, a method is needed to coordinate them, and for this, an action coordination strategy was developed in this work as the upper level of the system. Three quantification methods were compared and evaluated based on the future plant state predicted by plant parameter prediction models using long short-term memory networks. Results confirmed that the optimal action to satisfy the limiting conditions for operation can be selected by coordinating the action sets. It is expected that this methodology can be generalized through future research.

• Korean Journal of Adult Nursing
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• v.29 no.2
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• pp.200-210
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• 2017

Purpose: The purpose of this study was to assess the relationship between menopausal symptoms and decline in cognitive functioning of menopausal women with mediating effects of health promoting behavior. Methods: Using a convenience sampling, 140 menopausal women were recruited for the cross-sectional survey. Data were collected by using the Menopause Rating Scale, Health Promoting Lifestyle Profile, Everyday Cognition, and Korean Mini-Mental State Examination. Results: The mean scores for menopausal symptoms, health promotion behavior, and subjective cognitive decline were 14.40, 153.79, and 67.40 respectively. Health promotion behavior was directly affected by menopausal symptom ($R^2=8%$). Cognitive decline was directly affected by menopausal symptom ($R^2=11%$). Menopausal symptom (${\beta}=.33$, p<.001) and health promotion behavior (${\beta}=.21$, p=.014) were found to be predictive factors in subjective cognitive decline and explained 14%. Health promotion behavior had a partial mediating effect in the relationship between menopausal symptom and perceived cognitive decline (Sobel test: Z=2.05, p=.040). Conclusion: Based on the findings of this study, developing nursing intervention programs focusing on decreasing menopausal symptoms and encouraging health promotion behavior are recommended to improve cognitive decline in menopausal women.

• Journal of the Korean Society of Industry Convergence
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• v.25 no.3
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• pp.467-476
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• 2022

The Bank of Korea raised the benchmark interest rate by a quarter percentage point to 1.75 percent per year, and analysts predict that South Korea's policy rate will reach 2.00 percent by the end of calendar year 2022. Furthermore, because market volatility has been significantly increased by a variety of factors, including rising rates, inflation, and market volatility, many investors have struggled to meet their financial objectives or deliver returns. Banks and financial institutions are attempting to provide Robo-Advisors to manage client portfolios without human intervention in this situation. In this regard, determining the best hyper-parameter combination is becoming increasingly important. This study compares some activation functions of the Deep Deterministic Policy Gradient(DDPG) and Twin-delayed Deep Deterministic Policy Gradient (TD3) Algorithms to choose a sequence of actions that maximizes long-term reward. The DDPG and TD3 outperformed its benchmark index, according to the results. One reason for this is that we need to understand the action probabilities in order to choose an action and receive a reward, which we then compare to the state value to determine an advantage. As interest in machine learning has grown and research into deep reinforcement learning has become more active, finding an optimal hyper-parameter combination for DDPG and TD3 has become increasingly important.

• Proceedings of the Korea Water Resources Association Conference
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• 2023.05a
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• pp.95-95
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• 2023

Common hydrological problems of developing countries include poor data management, insufficient measuring devices and ungauged watersheds, leading to small or unreliable data availability. This has greatly affected the adoption of artificial intelligence techniques for flood risk mitigation and damage control in several developing countries. While climate datasets have recorded resounding applications, but they exhibit more uncertainties than ground-based measurements. To encourage AI adoption in developing countries with small ground-based dataset, we propose data augmentation for regression tasks and compare performance evaluation of different AI models with and without data augmentation. More focus is placed on simple models that offer lesser computational cost and higher accuracy than deeper models that train longer and consume computer resources, which may be insufficient in developing countries. To implement this approach, we modelled and predicted streamflow data of the Asa River Watershed located in Ilorin, Kwara State Nigeria. Results revealed that adequate hyperparameter tuning and proper model selection improve streamflow prediction on small water dataset. This approach can be implemented in data-scarce regions to ensure timely flood intervention and early warning systems are adopted in developing countries.

• Journal of East-West Nursing Research
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• v.15 no.1
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• pp.54-62
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• 2009

Purpose: The purpose of this study was to examine the effects of relaxation therapy to reduce anxiety level among spinal anesthesia surgery patients. Methods: The study employed a quasi-experimental pre-and-posttest design with nonequivalent control group. The experimental group was provided with the 15-min muscle relaxation therapy on the day before the surgery and an hour before the spinal anesthesia. Data were collected from 44 patients (22 in experimental and 22 in control group) who were planned to have spinal anesthesia surgery from an orthopedic surgery department at a general hospital in Seoul from January 13 to March 21, 2006. Results: The experimental group reported lower level of state anxiety after the surgery (23.18 vs. 33.64) than did control group but was not statistically significant. There were no significant differences in blood pressure or pulse rate between experimental and control groups after surgery. Conclusions: The further research should be conducted to polish the muscle relaxation therapy for various types of patients and to create more comfortable environment setting for application of the therapy. The muscle relaxation therapy may be a convenient and useful nursing intervention to reduce anxiety among spinal anesthesia surgery patients if more studies prove its effectiveness.

• Journal of Korean Academy of Nursing Administration
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• v.12 no.4
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• pp.587-596
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• 2006

Purpose: This study aimed to understand the empowerment in clinical nurses and to analyze the influences of job characteristics and professionalism on empowerment. Method: Subjects were 386 nurses in 8 general hospitals at G city and Seoul. Data were collected with self-administered questionnaires and analyzed using SAS 8.1 by applying ttest, ANOVA, Pearson correlation coefficient, and Stepwise multiple regression. Results: Empowerment was $3.58{\pm}0.63$ and among the subscale scores meaningfulness $(3.83{\pm}0.74)$ was the highest and Impact $(3.23{\pm}0.86)$ was the lowest. The level of empowerment was different significantly by age, marital state, education, clinical careers, position, job satisfaction(p<.00). Job characteristic score was $3.60{\pm}0.45$ and Professionalism score was $3.65{\pm}0.52$. Empowerment was positively correlated with job characteristics and professionalism(r= .63, .81, p<.01). Major factors that affect to empowerment in clinical nurses was professionalism, which had an explanation of 66.9%. Conclusions: The more clinical nurses took the professionalism, the higher nurses perceived empowerment. Therefore, empowerment and professionalism in nurses should be generally screened and other factors should be looked into. And if the specified nursing intervention program which increase their empowerment would be developed, it may contribute to qualify the nursing services.

• Perspectives in Nursing Science
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• v.9 no.2
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• pp.111-118
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• 2012

Purpose: This study investigated the effects of simulation-based nursing education (for the care of congestive heart failure patients) on self-directed learning competency, clinical knowledge and problem-solving ability among nursing students. Methods: A one-group, pre-post design was utilized with 87 nursing students as the subjects. The scenario of simulation-based nursing education was created using a high-fidelity patient stimulator, and consisted of four states ((1) assessment, (2) reviewing laboratory data and administering medications and treatments, (3) managing increased dyspnea and decreased urine output, and (4) handling the "getting better" state). The simulation-based nursing education included orientation, team-based learning, team-based practice, and debriefing. The data were analyzed using descriptive statistics, Pearson's correlation coefficients and paired t-tests. Results: The scores on the factors for self-directed learning competency (t=-2.57, p= .011), clinical knowledge (t=-6.85, p<.001), and problem-solving ability (t=-3.01, p= .003) increased significantly after the education intervention. Conclusion: Simulation-based nursing education is useful in improving self-directed learning competency, clinical knowledge, and problem-solving ability in nursing students.

• PNF and Movement
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• v.12 no.4
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• pp.217-224
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• 2014

Purpose: The purpose of this study is to analyze the hand functions of elderly persons according to their cognitive status and age. Methods: A total of 65 persons voluntarily participated in the study. The subjects were divided into three groups: impairment cognitive group, normal cognitive group, adult group (persons in their twenties). Assessment of cognitive status was performed using a mini-mental state examination for Koreans (MMSE-K). Hand function was assessed using the Purdue pegboard test. The collected data were analyzed using a one-way ANOVA and Pearsonn Acorrelation. Results: There were significant differences in hand functions in the three groups. Post-hoc test results showed significant differences between each group. There were statistically significant differences in the correlation among hand functions, cognitive status, and age. The findings of this study suggest that hand functions have a positive correlation with cognitive status. However, a negative correlation was found between hand function and age. Conclusion: According to the study's results, hand functions are correlated with age and cognitive functions in elderly persons. This study suggests that hand rehabilitation with cognitive intervention increases hand functions in elderly persons.

• Journal of Korean Clinical Nursing Research
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• v.14 no.2
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• pp.47-57
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• 2008

Purpose: The purpose of this study was to examine the effects of an electric heating pad on abdominal pain and anxiety during the colonoscopy procedure. Method: Data were collected from 70 adult patients (experimental group (35), control group (35)) who underwent colonoscopy in a general hospital in Seoul, South Korea between January 6 and May 4 2006. For the experimental group the electric heating pad was applied from 20 minutes before the test through the whole procedure. Objective pain was measured during the test, and subjective pain, state anxiety, blood pressure and pulse rate were measured after the procedure. Results: The experimental group with the electric heating pad reported significantly lower subjective pain and anxiety than did the control group. There were no significant differences in objective pain between experimental and control groups. Patients with an electric heating pad showed significantly lower systolic and diastolic pressure than did those in the control group. There was no significant difference in pulse rate between the groups. Conclusion: Use of an electric heating pad was efficient in reducing subjective pain and anxiety among patients undergoing colonoscopy. This is a convenient and useful nursing intervention to reduce anxiety and pain among patients having a colonoscopy.