• Journal of dental hygiene science
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• v.2 no.2
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• pp.75-83
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• 2002

By extracting the variables related to the work stress generated from dental hygiene, identifying their relationships, this study aims to contribute to academic progress on work stress. The test results of this study are as follows for each hypothesis: 1. Among the work stress sensing factors, role ambiguity showed correlation to the active coping strategy and the passive coping strategy, whereas it did not have any correlation to the evasive reation. However, the physical resource environmental factor showed correlation to the active coping strategy, whereas it did not have any correlation to the other reation. 2. The passive coping strategy, among the work stress coping strategies, influences the role ambiguity, B type, work ambiguity, physical resource environmental factor by about 18.7%. 3. The active coping strategy, among the work stress coping strategies, influences the social support, role ambiguity, work place of health center factor by about 18.9%. 4. The evasive reaction, among the work stress coping strategies, was influenced by only the 36 years old over factor by approximately 4.2%. 5. It was found in all work stress sensing factors that the group with lower social support had a more degree of experiencing stress than the group with higher social support. In case of the behavior pattern, the type A experienced more stress than the type B only in role ambiguity. 6. It was found that the group with the higher social support tended to choose more active coping strategy than the lower social support. In case of behavior pattern, the type B coped more actively than type A in the passive coping strategy.

• Korean Journal of Childcare and Education
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• v.15 no.4
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• pp.135-153
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• 2019

Objective: The purpose of this study was to examine whether motivation for choosing a teaching profession and the perception of social support of newly-appointed childcare teachers would predict work adjustment, and to understand the mediating role of the perception of social support. Methods: The data was analyzed by using correlation, regression, and the verification of mediating effects. Results: First, there were significant correlations of active motivation and material motivation when choosing a teaching profession, perception of social support, and work adjustment. Second, active motivation and material motivation in relation to choosing a teaching profession, and the perception of social support, were the variables that could predict the work adjustment of newly-appointed teachers. Third, the social support perceived by newly-appointed teachers had partial-mediating effects on the relationship between active motivation in relation to choosing a teaching profession and work adjustment, as well as on the complete-mediating effects on the relationship between material motivation and work adjustment. Implications: The training institute should strengthen education that could foster active motivation of pre-service teachers, and daycare centers should establish a cooperative workplace culture for the psychological adjustment of newly-appointed teachers.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.26 no.2
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• pp.165-171
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• 2016

A prosthetic knee for above-knee (AK) amputee is categorized into passive and active type. The passive prosthetic knee is generally made by elastic material. Although AK amputee can easily walk by using passive prosthetic leg, knee joint motions are not similar to ordinary persons. The active prosthetic leg can control the knee angle owing to the actuator and microprocessor. However, the active type is not cost-effective and the stability may be lost due to the malfunction of sensors. In order to resolve these disadvantages of passive and active type, a semi-active prosthetic knee which can control the knee angle is proposed in this work. The proposed semi-active one requires a less input energy but provides active type performance. In order to achieve this goal, in this work, a semi-active prosthetic knee using magneto-rheological (MR) damper for AK amputees is designed. The MR damper can support the weight of body by using less energy than actuator of active prosthetic. It can control knee angle by inducing the magnetic field at the time of stance phase. This salient characteristic is evaluated and presented in this work.

• Human Ecology Research
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• v.53 no.4
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• pp.351-362
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• 2015

This study examined differences in counseling work and work performance in a firm by the individual characteristics of counselors. This study also investigated the effects of consumer counselor's reaction and stress from counseling work on counselor satisfaction in regards to counseling work and work performance. The results of this study are as follows. First, consumer counselor's work satisfaction was high for female counselors, university-educated, with middle or high status occupations, had short work years, had a higher tendency towards consumerism, worked in a counseling department with an active reaction policy towards consumer complaints, and had a lower level. Second, the work performance of a counselor was high for those who were older, university-educated, had short work years, worked in large-size counseling departments in a firm, had a higher tendency of consumerism, and worked in counseling departments with active reaction policies toward consumer and consumer's complaints. Third, consumer counselor's work stress effected work satisfaction but did not influence work performance. The counselor's reaction towards consumer's complaints influenced the work performance but did not influence the work satisfaction of a counselor.

• Journal of the Korean housing association
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• v.17 no.1
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• pp.155-164
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• 2006

The purpose of this research was to find out attitudes toward work and leisure in later life and intention to move to senior community available to work among 50's in Pusan, Daegu, and Daejeon. The survey had been conducted in 414 respondents with questionnaire during May to June, 2003. Frequency, Crosstabs, T-test and ANOVA were obtained from the collected data using SPSS/WIN program. The results of this study were as follows. First, most respondents were preparing toward work in later life somewhat actively and the level of preparation differed by individual characteristics. Those who have higher level of education and subjective economic power were more active. The most preferred work item in later life were raising animals and plants, managing institution and training center and running shop. Those who have higher level of education and asset preferred managing institution and training center. Second, nearly three fourths of middle-aged have chosen leisure activities in consideration of later life and two thirds were preparing economically for leisure in later life. They have strong intention to participate in the leisure activity in later life and they also wanted to take part in various kinds of leisure activities. Those who have higher levels of education, subjective economic power, health and asset were more active in preparing leisure in later life. Third, over two thirds preferred to live and work in later life together with others rather than to live and work alone. Nearly half had intention to move to the senior community where work was available. The intention to move were differed by attitudes to work and leisure in later life. Those who were active in work and leisure in later life presented higher intention to move to senior community available work.

• PNF and Movement
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• v.6 no.2
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• pp.11-18
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• 2008

Purpose : The purpose of this study was to identify that the effect of hold-relax and active stretching on recoveries of upper trapezius and sternocleidomastoid muscle fatigue after computer work. Methods : This study was conducted by 30 volunteer at the age of 23~33(resting group=10, hold-relax group=10, active stretching group=10). The muscle fatigue measured by tracing the median frequency(MDF) decrement from power spectrum analyses of EMG signals and the data were analyzed repeated ANOVA. Result : In case of upper trapezius, there was significant difference in group I,II and group II, III. In case of sternocleidomastoid, there was significant difference in group I,II and group I,III. Conclusion : The active stretching was effective for sternocleidomastoid and the hold-relax was effective for upper trapezius and sternocleidomastoid. The hold-relax was effective better than active stretching on recoveries of muscle fatigue.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.33 no.2
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• pp.134-144
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• 2023

Objectives: Active pulmonary tuberculosis (active PTB) is manifested in one of the complications of pneumoconiosis, but statistics are not available. The objective of the present study was to identify the incidence of active PTB among dusty workers who were diagnosed with pneumoconiosis by year. Methods: The present study was performed using the results of the Pneumoconiosis Examination Council's assessment from the Korea Workers' Compensation and Welfare Service (KCOMWEL) database between January 1, 1984, and December 31, 2017. Pneumoconiosis is defined as Category 1 or more. Active PTB was defined as a positive result for active PTB in the result of the Pneumoconiosis Examination Council's assessment. The annual incidence rate of pneumoconiosis and active PTB were analyzed by age standardization. Results: The number of retired dusty workers who received the health examination for work-related pneumoconiosis increased every year. However, the incidence of pneumoconiosis among retired dusty workers and active PTB among patients with pneumoconiosis decreased every year. Conclusions: To effectively manage pneumoconiosis and active PTB among patients with pneumoconiosis, the annual status of them in retired dusty workers who received the health examination for work-related pneumoconiosis was required.

• Journal of Korean Physical Therapy Science
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• v.11 no.3
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• pp.38-48
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• 2004

The purpose of present study is to examine the relative efficacy of active exercise programs for work-related chronic low back pain and to figure out how much they affect mechanical stability of lumbar. Subjects are 43 employees with work-related chronic low hack pain, and they were randomly divided into two groups with general physiotherapy groups and thoracic exercise groups for increasing thoracic mobility. Active exercise programs were done 3 times a week, for 6 months, and the subjects were tested for Pain intensity(VAS), the Oswestry Disability Index, Maximal stretching with both hands in the overhead direction and the lumbar region angle of inclination. All subjects were reassessed with same measurement with Pre-study and 6 months after study After applying active exercise programs, pain intensity didn't show any significant difference between two groups. The Oswestry Disability Index showed significant difference between two groups and thoracic exercise groups decreased significantly compare to general physiotherapy group(p<0.05). Maximal stretching with both hands in the overhead direction showed significant difference between two groups and thoracic exercise group increased significantly more than general physiotherapy groups(p<0.05). The lumbar region angle of inclination showed significant difference between two groups and thoracic exercise group decreased significantly more than general physiotherapy groups (p<0.05). According to the results above, exercise for increasing thoracic mobility has an effect on lumbar stability. For the work-related chronic lower hack pain workers, it is far more effective for lumbar stabilization than general physiotherapy.

• Journal of Families and Better Life
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• v.33 no.5
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• pp.87-102
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• 2015

The purpose of this study was to examine the relationship between job stress, turnover intention, and the moderating roles of motivation for child care work. The subjects were 238 child-care teachers who were worked at child-care centers in Seoul. Questionnaires were used to rate job stress, turnover intention, and the motivation for child care work of teachers. The collected data were mainly analyzed by descriptive statistics, t-test, one-way ANOVA, Duncan test, Pearson's correlation and the multiple regression analysis. The main results of this study were as follows. First, there were differences in turnover intention according to individual characteristics such as career at the current child-care center and total career. Second, job stress was positively correlated with turnover intention, and negatively correlated with active motivation and material motivation. And turnover intention was negatively correlated with active motivation and material motivation. Third, a moderator effect of the active motivation was found in the relationship between the job stress and the turnover intention. Especially the active motivation is suggested to reduce the negative results of job stress and turnover intention. Therefore, the results indicate the importance of the active motivation which is considered as an aptitude, interest, affection for children and self realization when child-care teachers make a decision to enter the child-care work profession.

• Journal of information and communication convergence engineering
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• v.15 no.2
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• pp.112-116
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• 2017

In this work, we demonstrated a low noise and high linearity low noise amplifier (LNA) monolithic microwave integrated circuit (MMIC) with novel active bias circuit for LTE applications. The device technology used in this work relies on a process involving a $0.25-{\mu}m$ GaAs pseudomorphic high electron mobility transistor (PHEMT). The LNA MMIC with a novel active bias circuit has a small signal gain of $19.7{\pm}1.5dB$ and output third order intercept point (OIP3) of 38-39 dBm in the frequency range 1.75-2.65 GHz. The noise figure (NF) is less than 0.58 dB over the full bandwidth. Compared with the characteristics of the LNA MMIC without using the novel active bias circuit, the OIP3 is improved about 2-3 dBm. The small signal gain and NF showed no significant change after using the active bias circuit. The novel active bias circuit indeed improves the linearity performance of the LNA MMIC without degradation.