• Journal of Ocean Engineering and Technology
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• v.17 no.6
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• pp.65-71
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• 2003

Since the preflex beam is fabricated through welding, the pre-compressive stresses that should occur over the concrete pier are diminished by the welding residual stresses. Therefore welding residual stresses must be relieved during the fabrication. Therefore, the analysis and examination of the accurate welding residual stress distribution characteristics are necessary. In this study, accurate distribution of welding residual stress of the preflex beam is analyzed by the finite element method, using 2 dimensional and 3 dimensional elements. Further, the thermo-mechanical behavior of the preflex beam is also studied. After the finite element analysis, real distribution of welding residual stress is measured using the sectioning method, and then is compared with the simulation results. The distribution of welding residual stress by finite analysis agreed well with the experimental results.

• Journal of Society of Preventive Korean Medicine
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• v.17 no.2
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• pp.79-88
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• 2013

Objectives : This study investigated the relationship between smoking and health factors including stress resistance, stress index, fatigue and vaso-aging degree. Methods : The subjects were 19,953 persons who had received health examination by Korean Medicine and submitted questionnaires about smoking history, for 8 months from March to November in 2011. The stress index and resistance, fatigue were measured by HRV(Heart Rate Variability). The vaso-aging degree were measured by APG(Accelerated Photoplethysmograph). Results : Regarding the relationship between smoking and stress index and resistance, fatigue and vaso-aging degree were significant differences(p<0.05). Conclusions : This study suggests that smoking affects health factors including stress, fatigue and avaso-aging degree.

• Journal of the Korean Home Economics Association
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• v.32 no.2
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• pp.161-178
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• 1994

The purpose of this study were to investigate the current problems of family in adolescents' college entrance examination and to propose the practical alternatives about effective overcoming strategies. To study these objectives two kinds of sample and questionnaire were selected and the data were obtained through 360 parent-child pairs and 802 college preparatory institute students living in Seoul Taejon and kwangju. The major findings were as follow: 1. Educational achievements were affected by adolescents' personal traits as achievement need self-regulation emotional stability and self-concept but parents ' over-aspirations were negative agent for stress coping. 2. Parent-adolescent intimate and self-regulated relationships were positive factors for achievement and educational self-concept. Also adolecsents' educational aspirations were more significantly affected by parents' emotional supports. 3. Family stress were mediated by parent-child conflict so satisfied parent-child relationships can protect serious stressors as examination problems. Especially father-related factors were importantly revealed. In conclusion adolescent family and society must develop coping methods individually and cooperatively through family life education systematic policy and educational reformation.

• Journal of Korean society of Dental Hygiene
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• v.18 no.6
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• pp.933-946
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• 2018

Objectives: This study analyzed smoking trends by year in the relationship between smoking and oral health. Methods: This study targeted adults older than 19 years. To investigate the relationship between smoking and oral health status, composite sample Chi-square analysis and composite sample logistic regression analysis were performed using the fifth and sixth Korean National Health and Nutritional Examination Surveys. Results: Higher percentages of smokers were males in their 30s, high school graduates, single, with annual drinking habits, and higher stress perception. Analysis of smokers by year showed that smokers' rates decreased in all groups. Conclusions: This study suggests that smoking and sociodemographic factors are relevant to oral health status. The findings may be useful for informing the development of a personalized oral health promotion program for smokers.

• Journal of Korean Academy of Nursing
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• v.20 no.2
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• pp.214-226
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• 1990

For a man to maintain attention, he needs to keep a certain level of arousal. An inordinate increase or decrease in the level of arousal eventually has a negative influence on attention. Precedent research has shown that the degree of attention changes when an experience of stress is related to anxiety resulting in a rise in arousal. This research was done to examine this hypothesis by looking at the 27 female students, 14 of whom had failed in the annual examination. The results of the investigation are as follows : The stress of failure in the examination was seen to raise the level of physiological arousal. Although pulse and electromyography showed no significant change, further inquiries should be made based on other types of methodology. In spite of the rise of arousal, the performance of selective task was degraded. This suggests those students failed to give moderate attention to given information for that kind of task. But the exact reason of that failure was not identified : that is it was difficult decide whether they gave too much attention to the anxiety brought about by stress. Performance of integral tasks, however, did not show any degradation. Judging from these results, stress seems to exert significant influence on attention in the selection of the appropriate information among the various options given. This offers an important hint in relation to the health care situation where nursing information is offered. Clients who receive nursing information in stressful situations may have difficulty in separating and selecting this helpful information from other options which they have acquired through their life experience. The content and terminology of nursing information may be strange and unintelligible to clients, although they are quite familiar and distinct to nurses. So, it is desirable for nurses to give, in addition and at the same time when nursing information is given, some certain related information as devices for selection, instead of merely giving nursing informations as such. So far it is not clear whether the concepts of information processing theory can be suitably applied to nursing. However, it is obvious, according to this research, that the quality of attention is disturbed in the stress situation. This is why further inquiries should be made into attention in practical nursing situation.

• Journal of the Korean Society of Food Culture
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• v.35 no.5
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• pp.483-492
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• 2020

Dietary components can modulate stress, inflammatory indicators, and health risk. This study examined the relationship among diet, metabolic disease risk, and perceived stress in Korean adult females using the 2017-2018 Korea National Health and Nutrition Examination Survey. A total of 4,353 adult women aged 19-64 years were classified into four groups according to perceived stress level: very high stress group (VHSG, n=225), high stress group (HSG, n=1,079), moderate stress group (MSG, n=2,532), and low stress group (LSG, n=517). Data collection included the sociodemographics, anthropometrics, blood profile, and dietary survey. After adjusting for covariates, those in the VHSG had a higher body mass index (p=0.013) and obesity rate (p=0.053) with a shorter sleep time than the LSG group. The VHSG also tended to have a higher plasma LDL-cholesterol, hsC-reactive protein and lower levels of HDL-cholesterol, vitamin A, and vitamin E than the low stress group. High stress subjects demonstrated increased breakfast skipping frequency (p<0.0001), decreased fiber intake (p=0.001), potassium (p=0.041), and vitamin A (p=0.011) than the low stress ones. Therefore the perceived stress level was associated with the inflammatory indicators, obesity, and lack of anti-inflammatory or antioxidant nutrients. The dietary components may be an important mediator of stress and metabolic disease.

• Korean Journal of Oriental Medicine
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• v.3 no.1
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• pp.119-151
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• 1997

Conclusions for the relationship between a conceptional model of stress theory and its examination based on the Oriental medicine; 1. It was considered that a general conception of stress is included into the meaning of Ki in the Oriental medicine. 2. The response-based model to stress could be comparable to a conception of Ki-pathogens interchange In the Onental medicine. 3. The stimulus-based model may be explained as a modern conception of immoderation feeling related with an internal etiological factor, specially injury of seven emotions, among three groups of etiological factors for disease. 4. The feedback conception based on the interaction model could explain the principal of reversible emotion therapy in the nine Ki. 5. In the Oriental medicine, a study to clarify a emotional etiologic factor and its pathophysiologlcal mechanism has been continued for long time before establishment of stress theory.

• Korean Journal of Veterinary Research
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• v.44 no.2
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• pp.317-322
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• 2004

This study was performed to evaluate echocardiographic parameters in dogs with experimental mitral regurgitation subjected to dobutamine stress testing. In 8 beagle dogs, a 4-prong grasping forceps was inserted into the left ventricle through the carotid artery with fluoroscopic guidance. The disruption of chordae or mitral valve leaflet was performed. Echocardiographic protocols included quantitative Doppler echocardiography and M-mode measurement for evaluating left ventricle function. After all measurement was obtained at rest, dobutamine was infused incrementally. In stress testing, all measurement also was performed at rest as the same method. In stress Doppler echocardiography, regurgitant fraction and aortic stroke volume was increased significantly (P<0.001). Effective regurgitant orifice and regurgitant volume was not changed. In M-mode examination, fractional shortening was increased significantly at stress test (P<0.001). From the results obtained in this study, it could be suggested that dobutamine stress echocardiography increase left ventricle performance in non-functional mitral regurgitation and quantitative Doppler echocardiography is non-invasive, accurate method in valvular regurgitation.

• Perspectives in Nursing Science
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• v.13 no.1
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• pp.10-16
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• 2016

Purpose: This study aimed to investigate differences in drinking scores according to stress and depression. Methods: A secondary analysis of the 5th and 6th Korea National Health and Nutrition Examination Surveys was conducted. Complex sampling design data analysis was performed in order to identify differences in Alcohol Use Disorder Identification Test (AUDIT) scores according to stress and depression among 1,732 unmarried women. Results: The average AUDIT score was 6.14 in unmarried women. There were significant differences in AUDIT scores in terms of stress and depression. Conclusion: Practical programs that can prevent alcohol drinking for unmarried women are suggested. Programs for alcohol-related problems should include stress and depression management.

• Journal of muscle and joint health
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• v.28 no.1
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• pp.61-69
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• 2021

Purpose: This study investigated the mediating effect of perceived stress in the relationship between subjective health and depression in patients with coronary artery disease. Methods: This secondary analysis study used data from the 2016-2018 Korea National Health and Nutrition Examination Survey (KNHANES). Study participants included 466 patients over 20 years of age with coronary artery disease. Measures included questions about general characteristics, subjective health, perceived stress, and depression. The data were analyzed using complex sample design, descriptive analysis, Rao-Scott ��2 statistic, and multivariate logistic regression analysis with the SPSS 24.0 program. Results: Subjective health influenced depression, and perceived stress partially mediated it. Conclusion: To prevent depression in patients with coronary artery disease, it is necessary to develop effective stress management strategies.