• 지역사회간호학회지
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• 제10권1호
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• pp.252-261
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• 1999

The purpose of this study was to investigate the daily stress and stress coping behavior of elementary school children. The subjects for this study were 372 children fourth, fifth and sixth graders from an elementary school in Pusan. We adopted Won - Joo Chung's research instrument (1997) for measuring stress and coping behavior in this study. Statistical techniques such as frequency, percentage, mean, standard deviation, order, and Pearson correlation were used to examine the research questions of this study. The results of this study were as follows: 1. The most common instance of stress to be experienced by all children was the stress from school life, followed by social pressures, individual pressures and family environment. 2. A positive revaluation was the most commonly used stress-coping behavior, followed by behavioral mood conversion, spiritual support, problem-facing behavior, an information search for problem-solving, physical separation for emotional relaxation, avoidance, emotional aggressiveness and emotional expression. 3. Stress-coping behavior had a positive and significant correlation with the stress score(r = .4391, p= .000). In conclusion, the stress from school life was the most common experienced by all children. While independent effort in problem-solving was unsufficient, stress coping behavior had positive results. Therefore, this study verified the necessity of minimizing the stress children experience from school life and of helping them attain desirable stress-coping behaviors.

• 품질경영학회지
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• 제25권1호
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• pp.80-99
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• 1997

This paper considers designing the simple (2-level) constant-and step-stress ALTs minimizing the asymptotic variance of the maximum likelihood estimator of the accelaeration factor, which is defined as the ratio of the 100qth percentile at use stress to that a specified stress, for items having lognormally-distributed lives. It is assumed that (i) the log-linear relationship exists between the stress and the mean log life, (ii) the standard deviation of the log life is constant, and (iii) the cumulative exposure model holds for the effect of changing stress. For the constant-stress ALT the low stress and the sample proportion allocated to low stress are determined and for two modes of stress loading of step-stress ALTs, the low-to-high and high-to-low, the low stress and the stress change time are determined. For selected values of the design parameters the optimum plans are figured, two modes of step-stress ALTs and the constant-stress ALT are compared to each other, and the effects of the incorrect pre-estimates of the design parameters are investigated.

• 한국공작기계학회논문집
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• 제13권3호
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• pp.119-125
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• 2004

Generally, it is used the compensation spring to compensate the inaccuracy of screen image induced by thermal deformation in CRT monitor. Its mechanism is bi-metallic system made of heterogeneous metals and these is bonded by laser welding. But laser welding induces the non-uniform temperature distribution and locally residual stress is yielded by these temperature deviation. This paper studies residual stress of laser weldment using FEA and hole drilling method. The results are followed. In the case of heterogeneous materials weldment, higher residual stress induced in the weldment region of SUS 304 which have larger CTE than Ni 36 and residual stress on the middle of specimen is higher by 10.9% than that of its surface Measured residual stress of SUS 304 yield 481MPa and that of Ni 36 is 140.5MPa in the vicinity of the welding region. And the residual distribution is very similar in comparison with FEA result.

• 대한가정학회지
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• 제43권8호
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• pp.25-35
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• 2005

The purpose of the study was to investigate the relationship between parenting stress and, parenting efficacy and on parenting behaviors in mothers with young children. Ed. Note: confirm wording. A total of 222 mothers, each having children aged three to five, participated in the study. The data were analyzed through frequency, percentile, mean, standard deviation, Pearson's correlation, and multiple regression analysis. Results of this study indicate that parenting efficacy and stress were significantly related to parenting behaviors. The relationship between the mother's parenting stress and parenting behaviors was mediated by the mother's parenting efficacy. In conclusion, the mother's parenting efficacy and a perception of parenting stress turn out to be important factors in predicting parenting behaviors.

• 한국직업건강간호학회지
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• 제23권2호
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• pp.89-96
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• 2014

Purpose: The purpose of this study is to discover the influence of the working conditions on women workers' occupational stress. Methods: Descriptive method is used to identify women's stress depending on their general working features and conditions by conducting a survey of them in women-dominated service industries. SPSS 18.0 program is used for data analysis and descriptive statistics is presented with standard deviation, frequency and percentage. ${\chi}^2$-test is used as an analysis tool. To figure out factors that influence their stress, logistic regression analysis is used for general features and working conditions as independent variables, and occupational stress as a dependent variable. Results: As a result, among the independent variables, employment status, weekly working hours, career, shiftwork, and work-family-balance are meaningful factors that influence their stress. Temporary workers' stress is 3.65 times higher (p<.001), and workers working over 48 hours a week have 1.97 times higher stress (p<.003). Workers with over 5 years' career are under 1.73 times higher stress (p<.046) and shift workers are under 3.51 times higher stress (p<.001). Work family balance results in 1.93 times higher stress (p<.009). Conclusion: It is necessary to seek how to prevent and manage women workers' stress considering features.

• 한국가정과교육학회지
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• 제8권1호
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• pp.59-78
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• 1996

The purpose of this study were to investigate adolescents’level of stress, and coping behavior of stress as related to socio-demographic variables. The subjects were 270 first-grade middle school students and 258 first-grade high school students in Ansan. The data were analyzed by S.A.S. Program Package, the statistical methods of Frequency, Percentage, Mean, Standard deviation, T-test, One-way Anova, DMR(Duncan’s Multiple Range Test) The results of this study were as followed：1) The general tendency of adolescents’level of stress, and coping behavior of stress were that high school students experienced more stress than middle school students and both experienced more stress in school life than in family life. 2) According to personal variable, there were differences in the grade and scholarly attainment in the low-level stress group. According to parents variables, the level of stress differed significantly according to mother’s school career and father’s occupation in the low-level-stress group. There was significant difference in accordance with mother’s occupation in the high-level-stress group. 3) The coping behavior of stress according to adolescent variables differed significantly according to grades, the monthly income of the household, mother’s level of education and the father’s occupation.

• 한국학교ㆍ지역보건교육학회지
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• 제19권2호
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• pp.43-52
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• 2018

Objects: In this study, we analyzed the correlation between stress and depression related to the quality of life of one elderly household, and analyzed the influence of stress and depression on the quality of life. In this study, I tried to make a plan for improving the quality of life for one elderly. Methods: In this study, the frequency and percentage according to the general characteristics of one elderly household were frequency analyzed. And the mean and standard deviation of stress, depression, quality of life were analyzed on average. And continuous analysis of stress, depression, quality of life, etc., conducted a technical analysis. Relationship to stress, depression, quality of life, correlation analysis was done. The effect of stress and depression on the quality of life was linear regression analysis. SPSS Version 23.0 was used for analysis. Result: Increased stress and increased depression in elderly single households was a static (+) correlation. And the results of the regression analysis showed that the higher the stress and depression of one elderly household, the lower the quality of life. Conclusion: For the improvement of the quality of life of one elderly household, the government should support stress and depression prevention programs according to sex, age, number of chronic diseases.

• 아동학회지
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• 제30권6호
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• pp.417-442
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• 2009

This study investigated whether there are differences in father's involvement in child-rearing and role performance and on mother's parenting stress after fathers' participating in the father's program at kindergarten. Subjects were parents of children enrolled in H kindergarten, 38 fathers (18 experimental group, 20 control groups) and 38 mothers (wives of the experimental and control group fathers). Data were analyzed by mean, standard deviation, and t-test on the pre-score and post-score. Findings were that : father's participant program at kindergarten affected father's involvement in child-rearing and role performance, and mother's parenting stress reduction : the experimental group father's involvement in child-rearing and role performance was improved more than the control group. Experimental group mothers' parenting stress than that of the control group.

• Structural Engineering and Mechanics
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• 제58권4호
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• pp.689-705
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• 2016

The Drucker-Prager yield criterion is combined with an equilibrium equation to provide the elastic-plastic stress distribution within rotating annular hyperbolic discs and the residual stress distribution when the angular speed becomes zero. It is verified that unloading is purely elastic for the range of parameters used in the present study. A numerical technique is only necessary to solve an ordinary differential equation. The primary objective of this paper is to examine the effect of the parameter that controls the deviation of the Drucker-Prager yield criterion from the von Mises yield criterion and the geometric parameter that controls the profile of hyperbolic discs on the stress distribution at loading and the residual stress distribution.

• 한국치위생학회지
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• 제13권5호
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• pp.827-833
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• 2013

Objectives : The purpose of the study is to investigate the relationship between self-leadership in clinical practice and stress in dental hygiene majoring students. Methods : Subjects were 250 dental hygiene majoring students in J area from March 20 to April 20, 2012. Data were analyzed using the statistical package SPSS WIN 12.0 for frequency, mean and standard deviation analysis, one-way ANOVA and multiple regression. Results : There were significant differences between Satisfaction and clinical practice, practice and major stress factors(p<0.01). There were significant differences between practices, satisfaction, and self-expectations(p<0.001). The explanatory power of the model was 9%(p<0.05). The combination of self-leadership, activity, interpersonal factors were very important factors and the explanatory power of the model was 8%(p<0.001). Conclusions : Self-leadership is able to decrease stress. Self-leadership is very important in clinical practice in dental hygiene majoring students.