• Journal of Technologic Dentistry
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• v.28 no.1
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• pp.143-159
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• 2006

Objectives; The purpose of the present study is to investigate workplace satisfaction level of dental technicians and the differences between that of dental lab owner's and that of employed dental technicians, who are working in dental laboratories. Methods; Samples were comprised of 137 dental technicians working in dental laboratories. Data were collected through self-administered questionnaires and analyzed to frequency distribution, correlation, t-test and multiple regression analysis. Results; 1) Dental technicians generally are 'somewhat or a bit satisfied' with their workplace situations, regardless of position, sex, and individual career. 2) Mean values of 4 items out of 11 work situation factors of employed dental technicians were significantly lower than those of lab owner's. The 4 items are the openness of management, working environment, pay, and policy in promotion and raise. They would be sources of dissatisfaction and conflict. 3) Level of satisfaction was significantly correlated with 2 subordinate variables, i.e. working conditions and administration policy. There is a tendency that administration policy is a bit more important for lab owners, while working conditions are a bit more important for employed dental technicians. Conclusion; The employer-employee relationship of dental technicians seems to be sound, as no signs of troublesome problem is detected. But the discrepancy revealed in the above results is telling that there certainly exist some disagreement in the viewpoints of the two groups. It is necessary for the dental technicians to find ways to deal with the possible triggers of discord and discontent.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.25 no.3
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• pp.418-427
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• 2015

Objectives: This study evaluated the association between work related characteristics and hypertension among white collar workers in Korea. Materials and methods: This study was based on the Third Korean Working Conditions Survey(KWCS) conducted in 2011 among workers 15 years of age or older. The total number of individuals included in the analysis was 10,365 white collar workers. Results: The prevalence rate of hypertension was 3.7% among men and 1.0% among women. In multiple logistic analysis the adjusted odds ratio showed statistically effective association to hypertension. For work related characteristics, 1.73 (95% confidence interval, 1.22-2.46) resulted for large-company workers compared with the small-company group, 2.14 (95% CI, 1.22-3.75) for the long working hours group (61 or above) compared with short working hours group(52 or below), 1.78(95% CI, 1.08-2.95) for night shift workers compared with day workers, and 1.54 (95% CI, 1.18-2.01) for high job stress workers compared with low job stress workers. Conclusions: This study showed that it is important for workers to manage their work environment in order to prevent hypertension by modifying their types of work.

• Korean Journal of Occupational Health Nursing
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• v.29 no.4
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• pp.247-253
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• 2020

Purpose: Multimorbidity is defined as the coexistence of multiple chronic diseases within a person. This study explores the burden of multimorbidity in the working population, focusing on the recent increase in elderly workers in Korea. Methods: We summarized past empirical or theoretical literature. Results: Previous literature shows that about 80% of the elderly are multimorbid, and more than half of people with chronic disease have two or more chronic conditions. Multimorbidity is a common phenomenon in the elderly working population. However, little is known about its prevalence, the factors related to its unequal distribution among workers, and its effects on health outcome measures such as mortality, medical use, and employment decisions. Conclusion: This study asks researchers to focus on a subgroup analysis employing data on the working population. Health professionals need to develop clinical guidelines for multimorbid patients. As multimorbidity is a major health concern in the working elderly, prevention and control should be promoted in the workplace.

• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.26 no.2
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• pp.166-171
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• 2017

This study analyzes the effect of anodizing conditions on nanopore formation on a cylindrical aluminum roll. In general, a nanopore is formed at the center of a concave base-pattern. Occasionally, multiple nanopores are formed on a single base-pattern. However, to control the diameter and interpore distance precisely, single nanopores are required. In this study, the ratio of the number of single nanopores to the total number of nanopores was investigated by varying anodizing conditions such as electrode area, electrolyte concentration, and rotation speed of the roll mold. The areal ratio of the counter-electrode to the working electrode (aluminum), electrolyte concentration, and the roll-mold rotation speed were varied from 0.4% to 42%, 0.07 M to 0.3 M, and 5 rpm to 75 rpm, respectively. The experimental results showed that the single-nanopore ratio increased with increasing counter-electrode area and electrolyte concentration. However, the rotation speed had no significant effect on nanopore shape.

• Korean Journal of Child Studies
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• v.20 no.3
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• pp.339-349
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• 1999

Multiple regression and stepwise logistic regression was conducted to examine the relationships of work conditions, individual characteristics, and burnout (emotional exhaustion, depersonalization, personal fulfillment). Subjects were 144 early childhood educators. Teachers most likely to leave the profession were more educated, has less teaching experience and reported higher levels of burnout (i.e. high emotional exhaustion and lower personal fulfillment). Turnover was also predicted by high depersonalization, lower personal fulfillment, working overtime, and perceived choice of other jobs. Implications of these results for early childhood programs were discussed.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1993.10a
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• pp.1110-1116
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• 1993

A study on optimum operation performances of power efficiency, economy and exhaust emissions for a tractor was conducted. A mathematical model of multiple degree polynomial equation was applied to established the function of solid multiple parameter curves for specific fuel consumption (ge), cabon monoxide (CO) ,hydrcarbons (HC) and cabonaceous smoke (Rb). The optimum operation theorems for economy operation indicated by ge and for exhaust emissions described by Co , HC and Rb were obtained from analytical method and performance test data. The optimum operation theorems could exhibit optimum operation working points, curves, and regions. The optimum matching relations of engine speed and transmission parameters were analyzed by using computer simulation methods in accordance with the tractor specifications , actual farm working conditions in a typical drawbar pull work such as plowing , the optimum operation objective function, the ideal transmission ratio, practical gear shif ing positions and practical travel speed of the tractor TN55 medel. The results of the anlayzes indicated clearly that the optimum power efficient operation, energy saving and pollution reducing would be realized if the tractor would be operated according to theoptimum operation methods.

• Journal of Korean Academy of Nursing Administration
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• v.21 no.1
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• pp.88-98
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• 2015

Purpose: To evaluate the relationship between organizational socialization and intention to leave, and to identify factors affecting on intention to leave in operating room nurses. Methods: This study used a descriptive design. Seventy operating room nurses recruited from three hospitals under the same management style, in-service educational system, and working conditions agreed to participate in this study, and completed self-administered questionnaires of the organizational socialization and the intention to leave questionnaire. Respondents were classified by career as advanced beginner, competent practitioner, proficient practitioner and expert practitioner by Benner's stages of nursing proficiency. Data were analyzed with t-test, ANOVA with multiple comparisons, Spearman correlation, and multiple regression analysis. Results: Nurses unsatisfied with the current in-service continuous education had lower organizational socialization and higher intention to leave. In advanced beginners, job performance was lowest and organizational commitment was highest. In expert practitioners, intention to leave was highest. Organizational commitment, interpersonal relationship, identity and burnout were associated with intention to leave. Mutual trust, burnout, and interpersonal relationship were predictors of intention to leave explained 20.8% of variance. Conclusion: The career ladder program to enhance nurses' organizational socialization and intention to stay should be established and expanded for well-experienced operating room nurses.

• Korean Journal of Occupational Health Nursing
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• v.25 no.4
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• pp.290-299
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• 2016

Purpose: The purpose of this study was to examine the relationship among physical and psychosocial risk factors, mental health, and presenteeism of South Korean hairdressers. Methods: This study is a secondary analysis of data extracted from the 2014 Korean Working Conditions Survey (KWCS), conducted by the Korea Occupational Safety and Health Agency. For the present analysis, 920 hairdressers were selected. Based on existing literature, a set of variables was chosen from the KWCS. A multiple logistic regression analysis was performed to examine the association among risk factors in working place, mental health, and presenteeism. Results: The prevalence of poor mental health and presenteeism was 45.1% and 36.0%, respectively. The results of multiple logistic regression analysis indicated that 'repetitive hand or arm movements,' were significant predictors of mental health (OR: 0.63, CI: 0.41~0.97), and 'role clarity' was a significant predictor of presenteeism (OR: 1.86, CI: 1.10~3.13). Conclusion: Based on these results, we suggest to improve the clarification of the role of hairdressers as a strategy to reduce their presenteeism.

• Journal of Korean Biological Nursing Science
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• v.24 no.4
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• pp.209-218
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• 2022

Purpose: This study aimed to investigate the relationships between the characteristics of nurses' work schedules, health outcomes, and work-life balance. Methods: This was a secondary data analysis that included 422 nurses in Korean hospitals. Descriptive analysis, independent sample t-test, one-way ANOVA, Pearson correlation analysis, and multiple linear regression analysis were used to identify the associated factors. Results: Multiple linear regression analysis showed that work-life balance was lower when atypical work was performed (β=-.14, p=.010). Nurses who did not work overtime showed a higher level of work-life balance than those who worked overtime infrequently (β=-.11, p=.002) or frequently (β=-.28, p<.001). The work-life balance level increased when nurses had better subjective health status (β=.16, p<.001) or higher sleep quality (β=.29, p<.001). It was verified that the work-life balance level was higher for single-person households than for households with two (β=-.18, p=.003), three to four (β=-.16, p=.022), or five or more (β=-.21, p<.001) persons. Conclusion: This study suggests that government and hospital organizations should provide high-quality care and consideration to nurses who do atypical or overtime work as well as their subjective health status and sleep quality. Further research should focus on the development of a policy that improves the work-life balance of nurses, especially for those who work during atypical hours.

• Korean Journal of Child Studies
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• v.28 no.3
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• pp.149-162
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• 2007

A questionnaire was distributed to 102 teachers who worked in non-profit, for-profit and company-operated child care centers. The relationships of demographic, work conditions, and social support variables were examined by correlation, one-way ANOVA, and multiple regressions. Results showed that working hours, salary and social support were the most important factors influencing emotional exhaustion. Higher levels of burnout were found among teachers of infants and toddlers who worked for more than 12 hours on average, teachers with lower salary, and those with a lower level of social support. Results in general indicated that shorter working hours was a very important variable for reduction in burnout among teachers of infants and toddlers.