• Corrosion Science and Technology
• /
• 제20권6호
• /
• pp.484-490
• /
• 2021

Instrumented indentation testing has been widely used for residual stress measurement. The Knoop indentation is mainly selected for determining anisotropic mechanical properties and non-equibiaxial residual stress. However, the measurement of equibiaxial stress state and compressive residual stress on a specimen surface using Knoop indentation is neither fully comprehended nor unavailable. In this study, we investigated stress conversion factors for measuring Knoop indentation on equibiaxial stress state through indentation depth using finite element analysis. Knoop indentation was conducted for specimens to determine tensile and compressive equibiaxial residual stress. Both were found to be increased proportionally according to indentation depth. The stress field beneath the indenter during each indentation test was also analyzed. Compressive residual stress suppressed the in-plane expansion of stress field during indentation. In contrast, stress fields beneath the indenter developed diagonally downward for tensile residual stress. Furthermore, differences between trends of stress fields at long and short axes of Knoop indenter were observed due to difference in indenting angles and the projected area of plastic zone that was exposed to residual stress.

• 지역사회간호학회지
• /
• 제19권3호
• /
• pp.431-442
• /
• 2008

Purpose: The Purpose of this study was to examine the degree of obesity stress and analyze factors having an effect on obesity stress among college women. Method: The subjects were 347 female students from a university in J City. Data were collected using a self-report questionnaire for general characteristics, health-related characteristics, and current and preferred somatotype. Obesity stress was measured using 10 items developed by Cho (1996) based on Body Attitudes questionnaire (BAQ) of Ben-Tovim and Walker (1991). The survey was conducted from September 4 to September 7, 2007. Data were analyzed by t-test, ANOVA, Scheffe test, Spearman's rank correlation test, and stepwise multiple regression using SPSS 14.0. Results: The average score of obesity stress was $2.78{\pm}0.90$ out of 5.00. Stepwise multiple regression analysis showed that the major factors that affect obesity stress of female college students were perceived body shape, disagreement between current and preferred somatotype, history of weight control, body mass index (BMI), and perceived health status, and these factors explained 38.4% of obesity stress. Conclusion: Subjective judgment in the perception of or preference for body shape was the most important factor affecting obesity stress in female college students. Therefore, a plan is necessary to mitigate obesity stress and evaluate individually subjects who perceive themselves to be fat or want to be thinner than the current somatotype. And consultation and constant management are needed to help the high risk group (experience of weight control, BMI ${\geq}23kg/m^2$, not good health status).

• Journal of Preventive Medicine and Public Health
• /
• 제29권3호
• /
• pp.609-616
• /
• 1996

This study was conducted to evaluate the degree of stress state and the risk factors related to in 967 white collar workers and 275 blue collar workers by using Psycosocial Well-being Index. The results obtained were as follows : 1. In the white collar workers and blue collar workers, young age, low education and low income groups had high scores of stress, while in white collar workers, female had high scores of stress but in blue collar workers, male had high scores of stress. 2. According to psychosocial well-being index, mild stress sto were 73.9% and 53.1%, high risk stress state were 8.9% and 44.4%, and healthy state were 17.2% and 2.6% in white collar and blue collar workers respectively. 3. The total stress score was highly associated with the factors of depression, social performance and self-confidence, general well-being and vitality, and sleeping disturbance and anxiety in order. 4. In reliability test of stress factors, Cronbach's $\alpha$ coefficients of depression, social performance and self-confidence, general well-being and vitality, and sleeping disturbance and anxiety were 0.89, 0.81, 0.79, and 0.74 respectively. In conclusion, it suggested that age, sex, marital status, income, education, sleeping time, smoking and exercise habit were associated with stress score, all of the above factors should considered to occupational health.

• 가족자원경영과 정책
• /
• 제12권2호
• /
• pp.57-72
• /
• 2008

The propose of this study is to examine the economic stresses and coping strategies for elderly households depending on the variables of background, and to analyze the relations between these factors. Elderly households which satisfied the following criteria were recruited for participation: (a) reside in Seoul, or in the metropolitan area (b) live apart from their adult children after retirement and (c) ages over sixty. From September 20th, 2006 to November 30th, 2006, 296 were used for this research. First, the mean score of the economic stress level of elderly households was 2.87 out of 5, and the stress levels of income expenditure and asset debt were intermediate. The mean score of the economic coping strategy was 3.17 out of 5. In order to overcome economic stress, elderly households utilized reducing their expenditure, financial management, and re-employment. The level of elderly households' life satisfaction was 3.29 of 5 and the depression was 3.17 of 5. Second, there was a difference in accordance with the objective economic variables and the degree of the economic stress after the review of the variables of the elderly households and the coping strategy due to economic stress. The result shows that the households which had a low economic status and high economic stress from the objective viewpoint participated in more economic activities. Their reactions were to decrease the overall expenditure through reducing the expenditure rather than to manage the asset effectively through re-employment or to inaugurating a business. Third, I analyzed situational factors, economic stress, and economic coping strategy in order to compare relative contributors to psychological well-being through using regression. At the third phase in the process of analysis, the socio-psychological factors appeared to be significant factors contributing to psychological well-being. Regarding the stress caused by income expenditure increased, when elderly households were more concerned about reducing expenditure and re-employment, their feelings of depression increased.

• 한국초등과학교육학회지:초등과학교육
• /
• 제34권2호
• /
• pp.210-223
• /
• 2015

The purpose of this study was to analyze the stresses of teachers for elementary science class. To do these, the Science Teacher Stress Inventory has been developed the Science Teacher Stress Inventory, which consisted of 45 stress factors with subcategories such as student characteristics, teacher characteristics, expertise of science education, school environment, and administrative procedures. 120 teachers for elementary science class have participated in this questionnaire survey. The results of this study are as follow: First, stress from teacher characteristics is perceived as having more stress factors than five stress factors (student characteristics, teacher characteristics, expertise of science education, school environment, and administrative procedures). but all of the five stress factors was under normal. The detail question of stress such as 'Having to guide educational guidance and course in life education', 'Having to cope with the demand of new curricula', 'Pace of the school day is too fast', 'No time to attend training of the experiment (preliminary experiment)', 'Not enough time to complete lesson preparation and marking', 'Having to cope with non-teaching delegated duties', 'Fear of getting injured as a result of lab accidents' are perceived as having a lot of stresses. Second, there were not statistically significant differences in their personal variables such as gender, the course of high school. but there were statistically significant differences in their personal variables such as whether elementary subject exclusive science teacher, career in education experience, teaching grade. Third, coping ways of stresses are active support for better science teaching conditions, training of the experiment for expertise of science education, developing a workbook for science class.

• 한국보건간호학회지
• /
• 제29권2호
• /
• pp.298-311
• /
• 2015

Purpose: The purpose of this study was to describe levels of multiple stress factors and depression, and to examine the effects of the stress factors on depression among female marriage immigrants in Korea. Methods: Participants were 322 female marriage immigrants currently residing in Korea, who migrated from China, Vietnam, the Philippines, and other Asian countries. Stress of female marriage immigrants was measured on the SMFMI (Stress Measure of Female Marriage Immigrants in Korea), consisting of 21 items in four factors (cultural, household economic, emotional, and parenting and discrimination stress). CES-D was used to assess depression among marriage immigrants. Descriptive statistics, t-test, ANOVA with Scheffe's post hoc tests, and multiple regressions were performed for data analyses. Results: The average score for stress was 1.34 (SD=.98, theoretical range: 0-4) and the average score for depression was 17.07 (SD=10.09) in these female marriage immigrants. Adjusting for household income, employment status, duration since immigration, and Korean language proficiency, household economic stress (p<.001) was identified as the strongest predictor in explaining depression of female marriage immigrants (Adjusted $R^2=.331$). Conclusion: Health care professionals should prioritize intervention strategies to alleviate household economic stress for mental health promotion in female marriage immigrants in Korea.

• 지역사회간호학회지
• /
• 제17권4호
• /
• pp.521-529
• /
• 2006

Purpose: This study was to measure the degree of job stress and job satisfaction and the relationship between job stress and job satisfaction of 119 relief squads. Methods: The subjects were 170 members of 119 relief squads in the Fire Department of D City, and data were collected from 1 April to 20 April, 2006 through a survey using a questionnaire composed of questions on general characteristics (11 items), job stress (6 items) and job satisfaction (20 items). Collected data were analyzed through frequency, percentage, t-test, ANOVA and Pearson's correlation using the SPSS program. Results: The average item score for job stress was 2.77. Role sharing with peers was highest as 3.05. There were significant differences in the degree of job stress according to religion, working period and applying motive. The average item score for job satisfaction was 2.93. Group conflict was highest as 3.18. There were significant difference in the degree of job satisfaction according to religion, working period and applying motive. There were significant differences in the negative correlation between role-sharing with peers among the job stress factors and decision-making factor (r=.53), group conflict factor (r=.58), role implementation factor (r=.63) and personal social-culture factor (r=.53) among the job satisfaction factors. Also, there were significant differences in the negative correlation between co-workers among the job stress factors and decision-making factor (r=.607), group conflict factor (r=.51) and personal social-culture factor (r=.45) among the job satisfaction factors. Conclusion: It is important to develop various methods of job stress management to increase job satisfaction in 119 relief squads.

• 한국치위생학회지
• /
• 제13권2호
• /
• pp.181-191
• /
• 2013

Objectives : The research was performed to be used as basic data for dental hygienists' job satisfaction during clinical practice, and planning and operating effective clinical practice by analyzing stress factors in dental hygienists and the extent of stress caused by students in clinical practice. Methods : The research was aimed at dental hygienists working at college dental hospitals, dental clinic of general hospitals, dental hospitals and dental clinics located in Seoul and Gyeonggi province where clinical practices were conducted for dental hygiene students. For analysis, collected data was analyzed by using SPSS 20.0. Results : Results derived from analysis on characteristic difference by pattern of hospital were observed that there was a significant difference in job satisfaction by pattern of hospital. Results from analysis on correlation among stress factors were observed that there was correlation between behavior and attitude, interpersonal relationships, role and activity, ideal and value, and treatment fields. Results derived from analysis on the effect of stress factors on the job satisfaction were observed that role and activity (p=.002<.01), ideal and value (p=.019<.05), and treatment fields (p=.032<.05) affected the job satisfaction, while behavior and attitude (p=.386>.05), and interpersonal relationships ((p=.421>.05) did not affect the job satisfaction. A stress factor, role and activity (${\beta}$=.350) affected the job satisfaction the most, followed by ideal and value (${\beta}$=.242), and treatment fields (${\beta}$=-.185). For the explanation ability, the stress factors accounted for 20.5% of the job satisfaction. Conclusions : In conclusion, most of the dental hygienists are satisfied with students' clinical practice by pattern of hospital. Positive correlation was shown between stress factors. Behavior and attitude and ideal and value are high in stress in college dental hospitals, role and activity and treatment fields are high in stress in dental hospital, and interpersonal relationships are high in stress in dental clinics.

• 한국병원경영학회지
• /
• 제28권3호
• /
• pp.15-26
• /
• 2023

Purposes: Evaluate the level of mental health of administrative workers in medical institutions during the COVID-19 epidemic, and check the relationship. Methodology: It targeted 183 administrative workers at medical institutions located in Jeollabuk-do. The data survey method used a self-filled questionnaire, and the data collection period was 30 days from November 16, 2021 to December 16, 2021. A comparative analysis was conducted to find out the correlation between the subjects' biological factors, environmental factors, lifestyle factors, job related factors and depression, Post Traumatic Stress Disorder, and job stress. Findings: As an influencing factor of depression, it was found that the longer the working period, the higher the depression, and the higher the position, job satisfaction, and the total amount of smoking, the lower the depression. Due to the effect on Post Traumatic Stress Disorder, the higher the total amount of smoking, the higher the Post Traumatic Stress Disorder after effects, and the higher the organizational commitment and job satisfaction, the lower the Post Traumatic Stress Disorder aftereffects. It was found that organizational commitment had the highest influence on Post Traumatic Stress Disorder. As an influencing factor on job stress, it was found that the higher the job related factors was job satisfaction and organizational commitment, the lower the job stress. Practical Implications: Variables such as moderate physical activity, alcohol consumption, total smoking, working period, position, job satisfaction, and organizational commitment were identified as factors influencing depression, Post Traumatic Stress Disorder, and job stress during the COVID-19 pandemic.

• Child Health Nursing Research
• /
• 제23권3호
• /
• pp.312-318
• /
• 2017

Purpose: In this study factors affecting quality of life in mothers who have children with precocious puberty were identified. Methods: The participants were 102 mothers of children with precocious puberty. From September 12 to September 30, 2016, data were collected using a structured questionnaire and analyzed using SPSS/WIN 22.0. Results: Regression analysis showed that the model's explanatory power was 45%(F=28.71, p<.001). Role stress (t=-4.83, p<.001), objective burden (t=-2.71, p<.001), and average monthly income (t=4.12, p<.001) were factors affecting quality of life among these mothers. The most influential factor was role stress (${\beta}=-.41$), which showed a negative correlation. Conclusion: Role stress and objective burden were major factors that decreased the quality of life in these. The findings indicate that effective strategy programs for reducing role stress and objective burden are necessary to improve the quality of life in mothers of children with precocious puberty.