• Korean Security Journal
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• no.4
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• pp.257-277
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• 2001

The purpose of this study was to examine effects of practicing martial arts upon job performance of employees engaged in security industry. For positive investigation, 400 employees were questioned using some questionnaires; as a result, we obtained the following conclusion of the relation between the extent of the practicing martial art and the ability of performing their jobs. First, the more they practice martial art, the better and higher their mental health and psychological stability more than control group. Especially, when crime is reported to them or they arrest a criminal taken in an act of crime, the degree of their anxiety was low and they strongly expose self-confidence, their view of moral achievement and their sense of morality. Second, the more they practice martial art, the higher their ability of arrestment a criminal in an act and self-defense is. Because practicing martial art make their vital power and physical strength promoted. Third, the more they practice martial art, the more sincere the trust and friendship among colleagues are. As well they seem to feel strong solidarity oneanother. But practicing martial art appeared that it doesnt have an effect on coping with complications among generations and the gaps between master sergeant and them. Fourth, employees engaged in security industry practicing martial art is not only used in job performance merely as a technique; it is also effective on the mind that it make their anxiety dissolved and give them self-confidence.

• Child Health Nursing Research
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• v.9 no.4
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• pp.368-375
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• 2003

Purpose: The purpose of this study was to determine rate of breastfeeding practice at 3 months and to examine predictors for breastfeeding practice. Method: Study subjects were 114 mothers who gave birth at one hospital in Busan area. Data regarding breastfeeding practice and potentially related factors to breastfeeding were collected through a self-administered questionaire at 1 weeks and a telephone survey at 3 months. Logistic regression was used to identifiy significant the predictors on breastfeeding practice. Result: Rate of breastfeeding practice was 46.5% at three months of postpartum. The significant predictors for performing breastfeeding were lower the experience of breastfeeding trouble problem(OR=.88 compared with breastfeeding women, 95% CI; 78-.99), higher first breastfeeding satisfaction (OR=1.81 compared with non-breastfeeding women, 95% CI; 1.08-3.32), higher breastfeeding confidence(OR=1.84 compared with non-breastfeeding women, 95% CI; 1.08-3.32). Conclusion: The findings suggest the necessity of support program for mothers during the positive postpartum period to provide correct information about breastfeeding knowledge and attitude and to teach problem-solving skills for any breastfeeding problems for highere rate of breastfeeding practice

• Journal of KIISE:Software and Applications
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• v.31 no.2
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• pp.101-110
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• 2004

In dynamic systems, such as social and economic systems, complex interactions emerge among its members. In that case, their behaviors become adaptive according to Changing environment. In many cases, an individual's behaviors can be modeled by a stimulus-response system in a dynamic environment. In this paper, we use the Iterated Prisoner's Dilemma (IPD) game, which is simple yet capable of dealing with complex problems, to model the dynamic systems. We propose strategic coalition consisting of many agents and simulate their emergence in a co-evolutionary learning environment. Also we introduce the concept of confidence for agents in a coalition and show how such confidences help to improve the generalization ability of the whole coalition. Experimental results are presented to demonstrate that co-evolutionary learning with coalitions and confidence allows better performing strategies that generalize well.

• Journal of Korean Academy of Nursing
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• v.53 no.4
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• pp.397-411
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• 2023

Purpose: The role of medical staff gained immense significance in the context of the prolonged coronavirus disease (COVID-19) pandemic. However, few studies had explored the impact of simulation-based education on the ability of nursing students to care for the patients of COVID-19. This study provided nursing students with simulation-based education in caring for the patients of COVID-19 and confirmed its effectiveness. Methods: This study used a non-equivalent control group pretest-posttest design. The participants were recruited from the nursing departments of two universities in Korea through convenience sampling. A total of 79 participants were included: 37 in the intervention group and 42 in the control group. The intervention group received four sessions of simulation training based on the National League for Nursing Jeffries simulation theory. Results: The intervention group showed an improvement compared to the control group in terms of knowledge related to coronavirus, confidence in performing infection control skills, and perception of preparedness for caring for the patients of COVID-19, with a high-level of satisfaction and self-confidence in learning. There was no significant difference between the two groups in terms of anxiety. Conclusion: This simulation is expected to be a significant strategy for alleviating the global burden in terms of staff safety and patient outcomes by improving the competencies of prospective medical staff in responding to pandemics.

• The Korean Journal of Emergency Medical Services
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• v.23 no.1
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• pp.157-163
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• 2019

Purpose: Advanced airway maintenance improves the quality of cardiopulmonary resuscitation (CPR) for out-of-hospital cardiac arrest (OHCA) patients. In this study, we evaluate the factors associated with advanced airway management while performing CPR for out-of-hospital cardiac arrest patients by 119 emergency medical technicians (EMTs). Methods: The observational analysis method was used ro retrospectively collect data from 119 rescue run sheets. This study was conducted in a fire station in Seoul, Korea. The subjects of this study were defined as OHCA patients who received CPR from July 2016 to June 2018. We divided the subjects into two groups according to whether advanced airway maintenance was performed or not, and then compared and analyzed both groups. We performed logistic regression analyses for characteristics that differed significantly between groups. Results: Out of 188 OHCA patients, 146 (77.7%) had received advanced airway management. Statistically significant differences in the logistic analysis were found regarding the total number of EMT professionals (adjusted odds ration [aOR]: 1.955; 95% confidence interval [CI]: 1.227-3.115; p=0.005) and scene-time (aOR:1.119;95%CI:1.019-1.228;p=0.019). Conclusion: Advanced airway maintenance while performing CPR for OHCA patients by EMT associated primarily with ensuring an adequate numbers of EMT professionals and sufficient scene time.

• Journal of The Korean Society of Emergency Medicine
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• v.29 no.6
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• pp.568-577
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• 2018

Objective: Performing high quality cardiopulmonary resuscitation (CPR) is important for improving the survival rate with a good neurological outcome and fewer complications. The retention of accurate CPR knowledge is essential for providing high quality CPR. This study examined the effects of chest compression only CPR training on the retention of correct CPR knowledge. Methods: In December 2016, an interview survey to target the study population was conducted by trained interviewers, using a structured questionnaire. The respondents' general characteristics, status of CPR education, and knowledge and willingness regarding CPR were investigated. Pearson's chi-square tests and multivariate logistic regression analyses were used to determine which education-related factors affected the correct skill knowledge of performing CPR. Results: Among the respondents, there are 80 persons (17.4%) who answered correctly in the questions regarding the skills of performing CPR. The respondents who had a willingness to perform CPR to family and strangers were 90.2% and 44.9% respectively. Through multivariable analysis, the factors related to correct skill knowledge in performing CPR in the didactic with practice group were people who had undergone CPR training within 2 years (odds ratio [OR], 2.293; 95% confidence interval [CI], 1.311-4.009), and person who had undergone chest compression only CPR training (OR, 2.044; 95% CI, 1.033-4.042). Conclusion: Chest compression only type of CPR training and the experience of CPR education within 2 years were associated with accurate skill knowledge of performing CPR.

• Journal of Applied Reliability
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• v.14 no.3
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• pp.162-168
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• 2014

This paper discusses the application of Bayesian techniques with test data on similar products for performing the Economical Reliability Test of new one-shot device. Using the test data on similar products, reliability test required lower sample size currently being spent in order to demonstrate a target reliability with a specified confidence level. Furthermore, lower sample size reduces cost, time and various resources on reliability test. In this paper, we use similarity as calculating weight of similar products and analyze similarity between new and similar product for comparison of the essential function.

• Journal of Aerospace System Engineering
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• v.1 no.3
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• pp.1-6
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• 2007

The COMS(Communication, Ocean & Meteorological Satellite)is the geostationary satellite which will be performing three main objectives such as meteorological service, ocean monitoring and Ka-band satellite communications. This paper presents the analysis of the electromagnetic radiated compatibility between COMS satellite and the ARIANE 5 launch vehicle. As a conclusion, a good level of confidence can be given at present time to demonstrate the compatibility between the spacecraft and the launcher, and vice versa. No threat has been identified regarding the other units powered during launch mode.

• English Language & Literature Teaching
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• v.13 no.1
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• pp.1-26
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• 2007

This study aimed to investigate how EFL learners perceived English writing tasks and teachers' written feedback. The subjects were 82 mixed major college EFL students aged 19-24; the majority were freshmen females. Based on the scores estimated from the essay evaluation test, they were placed into two groups (proficienand less-proficient writers) and responded to an in-class questionnaire. The results indicated that: (1) regardless of writing proficiency, a large number of the students felt that they were just fair writers, which could be derived from low confidence and high anxiety; (2) grammar and vocabulary were perceived as the main features that determined good EFL writers and also prevented the students from performing the writing task successfully; (3) they believed that teachers' feedback contributed to the development of their English writing skills because it helped them apprehend what to improve or avoid in the future, acquire better English usage, and correct their errors; and (4) the proficient writers were more willing to correct errors themselves after being provided clues than the less-proficient writers. Implications of the findings for EFL classrooms are discussed.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.35 no.1
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• pp.124-131
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• 2012

This paper presents a spreadsheet-based reliability prediction simulation framework for the conceptual product design stage to acquire system reliability information in timely manner. During early stage, reliability performance deals with both known and unknown failure rates and component-level and subsystem-level failure estimate to predict system reliability. A technique for performing life testing simulation using Excel spreadsheet has been developed under the such circumstances. This paper also discuss the results obtainable from this method such as reliability estimate, mean and variance of failures and confidence intervals. The resultant of this reliability prediction system is mainly benefitting small and medium-sized enterprise's field engineers.