• Quality Improvement in Health Care
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• v.14 no.1
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• pp.77-91
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• 2008

Objectives : The purpose of this study was to survey the opinion and attitude of hospital managers toward the hospital evaluation program. Method : Managers of 157 hospitals which had participated in the hospital evaluation program were requested to respond to structured self-administered questionnaire. The questionnaire was composed with five categories: the preparation for the hospital evaluation program, the expertise levels of surveyors, the process and contents of the hospital evaluation program, the applying strategies for the result of the hospital evaluation to manager's work at their hospitals, and the main points to improve the hospital evaluation program. Result : 135 out of the 157 subjects completed the questionnaire, and the overall response rate was 86%. The hospital managers answered that they didn't have enough information such as the scoring rule of the standards, the process of the evaluation, and how to ask and get an answer to prepare the hospital evaluation. Furthermore, they estimated that the surveyors weren't specialized enough and didn't give a chance of checking over the result of the evaluation. In addition, they experienced that the result and feedback of the evaluation weren't enough information to be used as a guideline to improve in hospital management. Managers of the hospitals responded that the standards and method of survey in the hospital evaluation system should be reformed. Conclusion : Most of the responded managers seemed to have negative opinion on the hospital evaluation system, even though they were pushed up for interest in quality. Further studies and extensive evaluation of the hospital evaluation program are needed to bring up various information such as receptiveness and effectiveness.

• Journal of the Korean Society for Railway
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• v.12 no.6
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• pp.1043-1048
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• 2009

PES (Programmable Electronic System) is used by software development for the train control system. PES has been widely used in real world and consists of hardware, firmware and application software. The PES are easily apply to many applications because its implementation has high flexibility. Many safety critical functions are realized through software in safety critical system. Normally, it is difficult to detect failures for PES system because the PES is too sophisticated to identify sources of the failure. So, the reliability analysis is needed by using software fault tolerance techniques. Currently, there are the recovery block, distributed recovery block, N-version programming, N self-checking programming in fault tolerance techniques. In this paper, the models of recovery block and N-version programming in software fault tolerance techniques are suggested by using the Markov model. Also, the reliability in the train control system is analyzed through changing time. The fault occupancy rates of the program, adjustment test and voter are stationary. So, the relation between time and reliability is presented by using Matlab program. In the result of reliability, the reliability of recovery block is more high than N-version programming in case of the same number of substitution block.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.7 no.2
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• pp.289-297
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• 1997

Work-related low back pain(below LBP) is one of the major cause of morbidity, disability, limitation of activity and economic loss. Therefore the work-related LBP is one of the major issue in the field of industrial safety and health. This study was performed for detecting the risk factors and proposing the effective control programs of work-related LBP. The subjects were male workers employed at the welding and metal factory. The data was collected by self-reported questionnaire, interview and checking abdomen muscular and grasping power for two days on October, 1993. The contents of questionnaire were as follow: the experience of LBP, general characteristics, physical characteristics, employment status, type of work and working environment. The number of cases was 104 with a history of work-related LBP, so the prevalence of work-related LBP was 35.0%, and the number of controls was 140 without any history of LBP. As a result, marital status, educational level, abdomen muscular power, tenure, category of job, satisfaction of job, working posture, satisfaction for table and chair and lifting materials showed a statistical significance between the case and control groups. 284 Lifting jobs were quantified by NIOSH lifting equation method and ergonomic computer modelling methods. There were no significant differences in the action limit and disc compression force between group with LBP and without LBP. But in the lifting frequency and cumulative disc compression force there were significant differences. Therefore work-related LBP should be prevented by the ergonomic and environmental control.

• International Journal of Oral Biology
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• v.45 no.2
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• pp.42-50
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• 2020

Lysophosphatidic acid (LPA) is a lipid messenger mediated by G protein-coupled receptors (LPAR1-6). It is involved in the pathogenesis of certain chronic inflammatory and autoimmune diseases. In addition, it controls the self-renewal and differentiation of stem cells. Recent research has demonstrated the close relationship between periodontitis and various diseases in the human body. However, the precise role of LPA in the development of periodontitis has not been studied. We identified that LPAR1 was highly expressed in human periodontal ligament stem cells (PDLSCs). In periodontitis-mimicking conditions with Porphyromonas gingivalis-derived lipopolysaccharide (Pg-LPS) treatment, PDLSCs exhibited a considerable reduction in the cellular viability and osteogenic differentiation potential, in addition to an increase in the inflammatory responses including tumor necrosis factor-α and interleukin-1β expression and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) activation. Of the various LPAR antagonists, pre-treatment with AM095, an LPAR1 inhibitor, showed a positive effect on the restoration of cellular viability and osteogenic differentiation, accompanied by a decrease in NF-κB signaling, and action against Pg-LPS. These findings suggest that the modulation of LPAR1 activity will assist in checking the progression of periodontitis and in its treatment.

• Research in Community and Public Health Nursing
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• v.4 no.2
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• pp.146-157
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• 1993

The purpose of the study is to provide basic data on the public health management in the industrial work places, and some implications on the public health education related to workers self care capacity of their own health. To achieve this purpose a questionnaire was provided to 332 workers during February 11-28, 1993. This was do in Changwon-shi Geojeoi-kun, Chungmoo-shi, Jinjoo-shi, of Kyeongnam province. Through the analysis of the survey results, a relationship was deduced between worker's general characteristics and basic elements of health management in the work place. The main results of this study can be summarized as follows : 1. In the knowledge area special health screening received the highest score 3.18. While the educational program scored the lowest .85. In the Attitude area the highest score was achieved in the affirmative attitude to the time consumed by health checks (3.28). The lowest by the management of health checks(1.53). In the Practice area, participation in health checking is the most active (3.44) , and public health education is the least active (0.95). 2. The differences of knowledge by workers' general characteristics is statistically significant in the work sector (P<.05), age (P<.05), sex (p<.001), marital status (P<.001), and prior career(P<.01). But in Attitude general characteristics are not significant factors. In the Practice area, did have a statistical significance, work sector (p<.001), age (p<.001), sex (P<.05), marital status (p<.001) and work career (P<.001). 3. The total difference by workers' general characteristics has a statistical significance only in the case of marital status (P>05). The note of married workers is higher than that of single workers. 4. The correlation between any two of Knowledge, Attitude, and Practice do have a statistical significance (p<.001).

• Journal of Korean Clinical Nursing Research
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• v.18 no.1
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• pp.39-51
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• 2012

Purpose: Thisstudy was conducted with an aim to get a kind of prioritiesin developing the evidence-based nursing practice guidelines in fields. Methods: This study utilized a two-round Delphi surveys from November to December, 2010 with self-administered questionnaires which had a scale ranged from 0 to 9. A total of 95 head nurses working at the forty different general hospitals was asked to evaluate the priorities in four criteria; patient coverage, certainty, improvement in patient outcome and in nursing practice (first round) and 65 head nurses were asked to decide the importance of the criteria afterwards (second round). Results: The relative importance of 4 criteria was 22.3% in patient coverage, 26.5% in certainty, 23.5% in improvement of patient outcome, and 27.7% in improvement of nursing practice as the results of the 1st round and 20.6%, 26.6%, 24.8%, and 28.0% for the 2nd round, respectively. Top five nursing practices showed high scores after considering the relative importances of the 4 criteria were medication, intravenous therapy, checking vital sign, pain management, and diagnostic test or procedures care. Conclusion: It is recommended to take into account of the priorities that were found in this study when someone intends to develop a evidence-based nursing practice guideline.

• Journal of the Korean Society of Marine Environment & Safety
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• v.14 no.1
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• pp.15-20
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• 2008

Contaminated sediments are the actual cause for deterioration of coastal-ecosystem. So the developed countries have been in the process of making an effort to develop new techniques for monitoring and solving this problem since 1960. In this research, suction type pump dredging system of pilot size for collecting the filth from the seabed has been designed and manufactured that can prevent or minimize the secondary pollution by filth diffusion. For the practical use, the application possibility of the developed system has been checked through a system performance test. And, the evaluation of system performance according to the underwater body type has been carried out for system optimization by using CFD. The performance tests for checking the efficiency of sediment collecting system are done under two conditions i.e. when the system is non-operational and when the system is self-propelled. The results of this research showed the possibility of the development of dredging system to remove just the upper parts of filth from seabed.

• Journal of Home Health Care Nursing
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• v.12 no.1
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• pp.70-91
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• 2005

Purpose: Long-term care facilities have a responsibility to provide care service that enables residents to maintain their maximal functional capacity and quality of life. Also their needs must be reflected to the service programs. In oder to provide an adequate service, we should assess the elderly's physical, psychological and social health status and the need. In addition to this, the long-term care facilities must be defined clearly by the type of services. This study would contribute to conduct appropriate services in public long-term care policy for the older population in the future. This study would provide informations of long-term care facilities' services and older persons' needs for long-term care. Method: To achieve this objectives, this paper investigates the types, service programs of long-term care institutes and job descriptions of workers. The subjects were consisted of 150 long-term care institutes. 150 institutes of long-term care facilities were drawn from all over the country by a nonrandom, convenience sampling. The data were analyzed by frequency, percentage, $x^2$-test using SPSS program. The instruments of this study were self-reported questionnaires for long-term care institutes. The data were collected from March 1, 2004 to may 31, 2004. Results: Service programs of long-term care institutes were not enough for residents' demands. The job descriptions among nurse, social worker and physical therapist were not clearly defined. The nurse's main role was medication and checking vital sign(49.7%), that of social worker's was observation and supervising (31.2%). The most significant problems were lacking of diverse service programs for residents. Conclusion: Considering these findings and conclusion, the needs of long-term care services should be provided by individual physical and psychological level. And the professional manpower for elderly should be educated in multi disciplines.

• Journal of Family Resource Management and Policy Review
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• v.24 no.1
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• pp.41-53
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• 2020

The purpose of this study was to identify the factors that affect middle-old aged housewives' participation in lifelong learning as a part of human resource development. Through purposive sampling, the study recruited 163 full-time housewives over age 40 years who live in C City. As a result, first, 87.1 percent of all respondents, or 142, said they were willing to participate in lifelong learning in the future. There was no statistically significant difference in the results of cross-checking by age, educational background and monthly household income variables. Additionally, we used cluster analysis to measure differences in participation intentions according to the perception of human resource development of middle-old aged full-time housewives. The perception variable of lifelong learning is: First, Cognitive degree, second, importance, third, activation awareness. Cluster 1(n=16) was divided into generally low-perception types, such as cognitive degree, importance, and life-long learning activation of the C city, while Cluster 2(n=61) was classified as a type of person who thinks that lifelong learning is important to life and Cluster 3(n=86) was generally classified as a type with a higher lifelong learning perception. and we found that there was no difference in the intention to participate in lifelong learning by all cluster Lastly, we found that participants who valued human resource development scored significantly higher on measures of cognition than those who did not value it. Based on these results, we advocates social change that encourages the cultivation of talent through lifelong learning programs that can positively affect one's unique identity, not just wife and mother, and provide opportunities for self-development.

• Journal of Nutrition and Health
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• v.35 no.8
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• pp.886-895
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• 2002

Introduction and application of virtual education has been rapidly increased in these days. A variation of information communication technology has an effect on education in interconnect with network as internet in the world that exceed the limit of time and regional. Computer and network communication technology through the medium of internet make an entrance cyber education as a new education paradigm. It must be affective on learner who have various educational characteristics and requirements. It begins to appear quality, quantity improvements of knowledge and the development of information technology that web based cyber education. This study was conducted to develop the web based education program and to evaluate the effectiveness of learning satisfaction and accomplishment and to compare the cyber lecture system with the traditional lecture system During the second semester of 2001, this study was investigated 317 registered students in a "Food and Culture" class at Kyungwon University. The data were obtained from pre and post-study with self-administered questionnaire. The evaluation and satisfaction score of students who were registered in cyberclass was negative tendency to compare pre with post-test scores, because of insuffciency of computer-aided lecture system. The major problem was inconvenient in checking system for connecting times in cyberclass which was one of evaluation point in final score. Another problem was frequently disconnection during cyber studying and not to concentrate each time in the cyber lecture because of eye fatigue, boring due to less interesting contents than other newly developed web-site. The students was prefer to mix type of the cyber and traditional lecture type class. The result of final score an each class, the score of cyber class (71.36 $\pm$ 22.44) was significantly lower than other groups (mixed type : 76.66 $\pm$ 19.99, traditional type :79.17 $\pm$ 15.72) (p < 0.05). Cyber class was attempted to present a useful and interesting teaching and learning tool which can be applied successfully in a longer term. The result suggest that various teaching and learning strategies should be developed considering the fact that the student learn alone most in time.t in time.