• Journal of Integrative Natural Science
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• v.1 no.2
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• pp.122-126
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• 2008

The stress is an unavoidable result and a complex phenomenon in modern society. too, Human activity changes under control of the stress. The stress is a reaction to adrenalin or other stress hormones. It provides the power for fighting and the energy for going away from dangers. Because of the stress, our bodies increase the pulse, the blood pressure and the breath for more blood and more oxygen. So, in this research, we are measuring those which was increased by the stress. Also we will examine the change of HRV and APG on music. After that, in order to reduce the stress, we will design matching system that is based on the sense for music by using Zigbee.

• Biomedical Science Letters
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• v.24 no.4
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• pp.319-328
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• 2018

The purpose of this study is to identify the factors influencing the stress of the elderly women by various tools and to provide basic data for adaptation to the aging women. For this purpose, stress was measured by stress measuring equipment (HRV) and stress measurement questionnaire (SRI) in 31 elderly women over 60 years old. In summary, the results of this study suggest that the worse the subjective health, and when there is a spouse, it predicts a stress. In order to reduce the stress of elderly women based on these results, physical health management and environmental factors that can enhance the intimacy between husband and wife are also necessary.

• Journal of dental hygiene science
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• v.12 no.2
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• pp.181-188
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• 2012

The purpose of this study was to examine effect of locus of control and self-efficacy on stress of selected dental hygiene students. This study provides basic data to develop a method to reduce stress. The students of A women's college in Kyungi province majoring in dental hygiene were asked to answer the locus of control scale, self-efficacy scale, and stress level. As a result, this study concluded the following findings: 1. Locus of control scale was 8.77 and it meant the students used internal control. Self-efficacy scale was beyond median. In stress level category, mean of stress was 2.32, stress with friends was 2.05, stress with money was 2.33, stress with course in life was 2.29, stress with family members was 2.24, stress with study was 2.95. 2. Stress had negative relations with locus of control and self-efficacy. There was a positive relation between locus of control and self-efficacy. 3. Effect of self-efficacy on stress was significantly negative but effect of locus of control on stress was insignificant. In subscale, effect of self-efficacy and locus of control on stress with study was insignificant. 4. Indirect effect of locus of control on stress was statistically significant. The students with internal locus of control showed high self-efficacy and the students with high self-efficacy showed low stress level. In conclusion, educators should make an effort to reduce stress of students and understand the factors related to stress.

• The Journal of the Korea Contents Association
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• v.13 no.8
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• pp.266-274
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• 2013

This study was developed to provide the basis for efficient bedside training by discovering and analyzing ways to reduce stress when students are in clinical practice. The present study was conducted using a 3-part questionnaire format and was based on 253 participants who were students completing clinical practice. The results showed that environmental factors were the most stressful for students in the department of radiology. According to the questionnaire, the highest factor relating to stress was 'standing for long durations' with a value of $3.27{\pm}1.04$, and values were respectively high in the sections on' disregard when students have a lack of knowledge' and 'repetition in simple tasks'. Students who had a good training atmosphere, good relationships with clinical radiological technologists and other students, and students who had high self-esteem showed low stress levels. The effect on BEPSI scale increased as interpersonal relationships and performance declined. Therefore, training institutions should consider relaxation areas for students, radiological technologists should not ignore the reality that students do not have substantial knowledge in clinical practice and comparisons made between students should not exist. In addition, there is the need to make an effort to reduce stress experienced by students in clinical practice through the use of positive communication and encouragement by assigning various training opportunities, providing areas to sit and initiating relaxation periods for students to reduce fatigue, as well as challenging students rather than restricting them to the simple and repetitive routines they encounter in clinical practice.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.24 no.4 s.175
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• pp.907-915
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• 2000

The movement of teeth and initial stress associated with the treatment of orthodontics have been successfully studied using the finite element method. To reduce the effort in preprocessing of finite element analysis, we developed two types of three-dimensional finite element models based on the standard teeth model. Individual malocclusions were incorporated in the finite element The movement of teeth and initial stress associated with the treatment of orthodontics have been successfully studied using the finite element method. To reduce the effort in preprocessing of finite element analysis, we developed two types of three-dimensional finite element models based on the standard teeth model. Individual malocclusions were incorporated in the finite element models by considering the measuring factors such as angulation, crown inclination, rotation and translations. The finite element analysis for the wire activation with a T-loop arch wire was carried out. Mechanical behavior on the movement and the initial stress for the malocclusion finite element model was shown to agree with the objectives of the actual treatment. Finite element models and procedures of analysis developed in this study would be suitably utilized for the design of initial shape of the wire and determination of activation displacements.

• Journal of Power Electronics
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• v.15 no.2
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• pp.389-398
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• 2015

This paper presents a 1.92 kW resonant converter for medium voltage applications that uses low voltage stress MOSFETs (500V) to achieve zero voltage switching (ZVS) turn-on. In the proposed converter, four MOSFETs are connected in series to limit the voltage stress of the power switches at half of the input voltage. In addition, three resonant circuits are adopted to share the load current and to reduce the current stress of the passive components. Furthermore, the transformer primary and secondary windings are connected in series to balance the output diode currents for medium power applications. Split capacitors are adopted in each resonant circuit to reduce the current stress of the resonant capacitors. Two balance capacitors are also used to automatically balance the input capacitor voltage in every switching cycle. Based on the circuit characteristics of the resonant converter, the MOSFETs are turned on under ZVS. If the switching frequency is less than the series resonant frequency, the rectifier diodes can be turned off under zero current switching (ZCS). Experimental results from a prototype with a 750-800 V input and a 48V/40A output are provided to verify the theoretical analysis and the effectiveness of the proposed converter.

• Korean Journal of Occupational Health Nursing
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• v.30 no.3
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• pp.110-119
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• 2021

Purpose: The purpose of this study was to explore the factors affecting turnover intention of nurse who work in comprehensive nursing care service wards. Methods: The study design was a cross-sectional study. We recruited participants in 5 general hospitals located in Gyeonggi. Data were collected using structured questionnaires. Data of 150 nurses were included in the final analysis. Multiple regression analysis was used to identify the influencing factors on turnover intention. Results: Work in the thoracic surgery department (β=.158, p=.045), Emotional labor (β=.282, p=.004), occupational stress (β=.222, p=.004), and burnout (β=.249, p=.003) were identified as factors influencing turnover intention. These factors explained 39.1% of the variance of turnover intention. Conclusion: The findings suggest that it is important to reduce emotional labor and occupational stress to reduce turnover intention for nurse in comprehensive nursing care service wards.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2008.04a
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• pp.60-64
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• 2008

According to previous research, welding-induced stress in steel structures can significantly affect the fatigue behaviour; it produces initial damage of weldiug part of structure locally and residual stresses reduce the fatigue strength after welding precess. In this study, through continuum damage mechanics, we can estimate the weldiug damage using the stress and strain history during welding process and the effect of welding residual stress for assessment of fatigue life. The variation of welding-induced stresses and strains need be traced precisely in advance for a reliable weldiug damage assessment. In this study, a damage and fatigue analysis techniques for steel structures with welding-induced residual stress are presented. First, We calculate the history of temperature according with welding process. And residual stress with a welding thermal history was evaluated by non-linear thermal stress analysis. Secondly, welding damage and fatigue life are estimated with kinetic damage law.

• Journal of Haehwa Medicine
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• v.21 no.1
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• pp.151-161
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• 2012

Purpose: This survey aimed to find out the relationship of work stress, self-efficacy, and task performance of the preceptor. Method: The data of this study were collected from 215 Preceptors who have been working in four hospitals in Deajeon. The data were analyzed by t-test, ANOVA and Duncan test for group differences, Pearson's correlation and Multiple Linear Regression with SPSS WIN 17.0 program. Result: There were significant positive relations between the work stress (r=0.193, p<0.05), self-efficacy (r=0.346, p<0.00), and the task performance of preceptor. The most predictive factors of the task performance were self-efficacy(11.5%), the job stress(2.7%), and age(2.0%). Conclusion: Nursing department supervisors need to manage preceptor to reduce work stress and to improve self-efficacy. It is recommended that work stress should be decreased and programs for increasing self-efficacy need developing in order to satisfy self-realization of preceptors and their needs.

• Korean Journal of Occupational Health Nursing
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• v.19 no.2
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• pp.268-277
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• 2010

Purpose: To examine the relations among occupational satisfaction, stress, and customer orientation of upper-scale general hospital nurses. Method: We studied with structured questionnaires with total 66 questions for 218 nurses working at university hospitals in Gangwon-do from February 2 to 22, 2010. Result: Occupational satisfaction and customer-oriented character increased when nurses' ages and career experiences were higher, married, working in daytime without shift and in higher positions. Occupational stress increased when nurses were younger, not married, with three shifts, and when they were general nurses. However, there was no statistical difference. Customer-oriented character had positive correlation with occupational satisfaction and stress while occupational satisfaction had negative correlation(r=-0.358) with occupational stress. Conclusion: As occupational stress and satisfaction of nurses in university hospitals showed significant relations with customer-oriented character, t is necessary to reduce occupational stress of nurses, and strengthen occupational satisfaction of them.