• Journal of Korean Library and Information Science Society
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• v.49 no.2
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• pp.301-326
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• 2018

The study is to find the possibility of cooperation between civil servants as a mediators for changing a society in a region into community of practice. "Community" is the value-oriented concept and exists in a local community, a community of practice and a organization that have the characteristic of "Community." Public libraries as "Community" have both characteristics of local community and community of practice. And public libraries as community gives public services for neighborhood region problem-solving to people. But in Korea, Residents autonomy system in Dong gives the service to people. They all conducts the business for changing a society in a region to community of Practice. Therefore the study conducted a survey about sense of community and necessity of cooperation in the business. The results are following: The group of higher awareness on community feels less needs to corporate the work in community than the group of lower awareness on community; The group of higher awareness on community or the group having more experience on community have lower job satisfaction. Therefore the motivation on working for community is needed for the mediator.

• Journal of the Korean Institute of Intelligent Systems
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• v.18 no.2
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• pp.230-235
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• 2008

Recently, LG chemical corporation developed new material called HYPERIER, which has an excellent barrier characteristic. It has many layers which are made of nano-composite within LDPE(Low-Density Poly Ethylene). In order to guarantee the quality of the final product from the production line, a certain test equipment is required to investigate the existence of layers inside the HYPERIER. In this work, ultrasonic sensor based test equipment for investigating the existence of inner layers is proposed. However, it is a tedious job for human operators to check the existence by just looking at the resounding waveform from ultrasonic sensor. Therefore, to enhance the performance of the ultrasonic test equipment, Fast Fourier Transform(FFT) and Principle Components Analysis(PCA) and Back-Propagation Neural Network(BPNN) are utilized which is used for classification of Quality. To verily the feasibility of the proposed scheme, some experiments are executed.

• The Journal of the Korea institute of electronic communication sciences
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• v.7 no.6
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• pp.1463-1469
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• 2012

This study aims to identify the relations between self-reported symptoms of industrial workers work-related musculoskeletal disorders and psychosocial factors. The subjects of the study were 120 male workers who were using the rehabilitation center of K company and they were voluntarily interviewed with a use of organized questionnaire. Except the responses from eighteen subjects whose responses were insincere and who had disorders in musculoskeletal areas, the responses of 102 ones were decided for the final analysis. The results showed that there were significant differences in self-reported symptoms of work-related musculoskeletal disorders between the subjects according to smoking, physical burden and self-efficacy. To prevent and control work-related musculoskeletal disorders, multi-characteristic aspects of how the disorders appeared and psychological factors, in particular, self-efficacy, should be carefully considered. Then, as psychosocial factors affect musculoskeletal disorders, relations between the disorders and factors should be analysed through long-term follow-up studies, psychosocial factors should be actively intervened, and the effect should be evaluated.

• Korean Journal of Social Welfare
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• v.59 no.1
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• pp.5-25
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• 2007

The purpose of this study is to explore factors influencing the poverty of the elderly in Korea. In spite the fact that poverty of the elderly is more serious than any other demographic group, this important issue is rarely studied. Using the 7-year accumulated data from the KLIPS(Korean Labor and Income Study), I combined the work history of the elders, their demographic characteristics and residence to estimate pooled data analysis of the elderly after reaching age 55 and who are also only living by themselves(only the elders). The results of this study are as followed: first of all, age, education, marital status, wealth, residence and work history are shown to be significant predictors for the poverty of elderly. Second, the results show that factors influencing the poverty is different depending on the elder's (demographic) characteristics. For example, age and marital status is a more important predictor in female than in male, and wealth and health status is a more important predictor in elders who do not have a spouse than in elders who do. Such results suggest that the policy of the poverty of the elderly which is only focused on elder's characteristic is limited. Therefore we can suggest that a policy which workable people can earn decent income and saving wealth for their elderly in job is needed. Especially, policies on the 'Working Poor' and reconstruct the current public pension system is very much needed.

• Journal of Technologic Dentistry
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• v.34 no.3
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• pp.283-290
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• 2012

Purpose: This study was aimed to know the perception about Certified Dental Technician system of students majoring in dental laboratory technology in Korea. Methods: A survey was conducted for four months from August through November 2011 with questionnaires. The responses from 1148 students majoring in dental laboratory technology in Korea were analyzed with SPSS 12.0 program, and frequency analysis and chi square test were implemented. Results: Total students who responded to the questionnaire were 1148 (100%). The population characteristic of this survey is that 691 (60.2%) are male. The respondents believed that the job skill could be expanded by implementing the system (85.6%). Also, they responded that they would be willing to acquire the Certified Dental Technician qualifications in the future (95.5%). Conclusion: Students majoring in dental laboratory technology in Korea believed that the execution of the system of Certified Dental Technician would expand the dental technology industry.

• The KIPS Transactions:PartA
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• v.16A no.5
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• pp.327-338
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• 2009

Recently, with the advance of computing and networking technique, the high speed internet becomes widespread, however, it is still hard job to do streaming the media which requires high network bandwidth over the internet. Previous researches for streaming over the internet mainly proposed techniques that controls the QoS(Quality of Service) of the media in proportion to the network status. Though, this could be the solution for the service provider while the service user who wants constant QoS may not satisfy with variable QoS. In the paper, we propose a network adaptive prefetching technique, PAP, for guarantee of constant QoS. The PAP prefetches frames by increasing the frame transmission rate while the available network bandwidth is high. The PAP uses the prefetched frames to guarantee the QoS while the available network bandwidth is low and increases the playout interval to prevent buffer underflow. The experiment result shows that the proposed PAP could guarantee the constant QoS by prefetching the frames adaptively to the network bandwidth with the characteristic of video stream.

• International Area Studies Review
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• v.13 no.2
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• pp.741-769
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• 2009

We have been analyzed by research on the characteristics of professional consciousness, professional preparation, employment, and career life aimed at Chinese students. There is a tendency that overall trend is almost the same, even though there might be a small difference according to the characteristics of Chinese students' gender and scholastic year. Especially, a drift to the economic aspect of professional consciousness is a reflection of increasing hardship on our society. In spite of now is the era of disappearing permanent job and being changed to the concept of lifelong career, there is exceedingly rare places for getting education of professional consciousness or related information. It is needed to inform upright professional consciousness and to educate the Chinese students.

• Journal of Naturopathy
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• v.10 no.1
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• pp.33-41
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• 2021

Purposes: We studied whether forest bathing is effective in improving the stress of the human body. Therefore, we investigated changes in pulse rate, stress index, and autonomic nervous system after 2 hours of forest bathing on Jeju Samdasu Forest Methods : The study was conducted before and after forest bathing through heart rate variability and questionnaire. Results: After forest bathing, the average pulse rate of the experimental group was significantly increased. The stress index significantly decreased in the post-test in the experimental group. The cumulative stress, sympathetic activity (LF), parasympathetic activity (HF) change, and LF/HF ratio were slightly different from those of post-test in the experimental group, but were not statistically significant. In the survey of job stress average index and state characteristic anxiety index through questionnaire, it decreased significantly after forest bathing (p<.001). Conclusions: The Samdasu forest bathing has been proven effective in enhancing pulse and reducing stress, so it is evaluated that forest bathing is effective in promoting health.

• Journal of Family Resource Management and Policy Review
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• v.26 no.2
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• pp.85-94
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• 2022

This study aims to investigate predictors of the subjective well-being of middle-aged single mothers who experienced divorce or bereavement. The study involved 244 divorced or widowed women from the 7th Korean Longitudinal Survey of Women and Families aged 40-60 who had children and were employed. Descriptive statistics and multiple regression analyses were conducted. The research results showed that the socio-demographic characteristic (marital status and health), person-related variables (satisfaction with leisure activity and stress), and work-related variables (job satisfaction and work-family enrichment) were significantly related to happiness of middle-aged single mothers. Current economic status and stress were associated with depression in middle-aged single mothers. Increasing middle-aged single mothers' participation in healthy leisure activities, reducing their stress, and improving their satisfaction with work were found to be important to enhancing their subjective well-being. Regarding the foregoing, policy directions were discussed for middle-aged single mothers' leisure activities, stress management, and improved satisfaction with work.

• Journal of the Korean Society for Precision Engineering
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• v.12 no.11
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• pp.27-35
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• 1995

The fluid coupling combined with a pump and a turbine have many merits compared with other couplings, their uses are increesing rapidly in various industrial fields at home and abroad in pursuit of high-speed more efficiency durability of various mechanic devices. The authorities concerned have recognized the improtance of the fluid coupling and supported its developement and now some trial products began to show up. As the structrue and characteristics of the fluid coupling have little similarity to other kinds of couplings and its fluid behavior is unique, so its characteristic analysis is expected to be difficult. Until now no satisfactory study on the characteristics of the fluid coupling seems to have been conducted at home, so a study on this field needs to be done urgently. The purpose of this research is to construct the experimental test set-ups and establish a series of performance test program for the domestically developed fluid couplings and to provide a software to store and utilize these experimental data which can be used to improve the performance of the fluid coupling and solve on the job problems confronted in operation. The performance test consists of taking measurment of torque, rpm and efficiency of the fluid coupling for three different amount of working fluid inside with various loads to the output shaft and finally infestigating the torque, rpm and efficiency characteristics of the fluid coupling with respect to these parameters. The results of this study can contribute valuable references to the development of variable speed fluid coupling and torque converter currently pursued by the domestic industry.