• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.11a
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• pp.190-191
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• 2020

The bonding of steel bar to concrete is closely related to the roughness and corrosion degree of steel bar surface. The accelerated corrosion of concrete specimens with different reinforcement diameters was carried out in this test. Through the pullout test of the corroded concrete specimens, the relationship between the bond stress and the displacement of the corroded concrete specimens under the corresponding corrosion degree was obtained. The bond stress of reinforced concrete with different size and corrosion degree are compared and analyzed to find out the influence of corrosion on the bonding property of reinforced concrete.

• Journal of applied mathematics & informatics
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• v.8 no.3
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• pp.819-827
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• 2001

An algorithmic approach to degree reduction of B-spline curves is presented. The new algorithms are based on the blossoming spline curves are obtained by the generalized least square method. The computations are carried out by minimizing the $L_2$ distamce between the two curves.

• Journal of the Korean Home Economics Association
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• v.36 no.1
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• pp.99-116
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• 1998

The purposes of this study were to find the influence of wife's home management behavior pattern and husband's perception about it on family life satisfaction, and to find out variables which influence them. For theses reviewing literature and empirical research were conducted. The major results were as follows; 1) The couple's psychological variables (ie, degree of life level recognition, of resourcefulness recognition and of communication) were relatively high. The wife's home management behavior pattern was relatively morphogenesis and the husband's perception about wive's it was relatively morphogenesis. And the couple's degree of family life satisfaction were relatively high. 2) Influential variables on wife's home management behavior pattern were level of education, degree of resourcefulness recognition and of communication. And influential variables on husband's perception about vive's it was degree of communication. 3) Influential variables on wive's the degree of family life satisfaction were degree of life level recognition, of resourcefulness recognition and of communication. And influential variables on husband's it were level of education, job, degree of life level recognition, of resourcefulness recognition and of communication. 4) The wife's home management behavior pattern and husband's perception about wive's it were to predict the couple's degree of family life satisfaction. 5) In cause-effect pathway mode. level of education·job·degree of life level recognition·of resourcefulness recognition and of communication showed direct and indirect effect on family life satisfaction through wife's home management behavior pattern or husband's perception about wive's it.

• Fire Science and Engineering
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• v.21 no.1 s.65
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• pp.19-28
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• 2007

The result of survey on job satisfaction of first-aid staff found that degree of work-related stress of 119 first-aid staff got total average 2.54 point (SD.44) out of 4. The degree of fatigue that first-aid staff feel got 2.09 point (SD.49) out of 4. The degree of job satisfaction of 119 first-aid staff got 2.71 point out of 5. This study suggests increasing of new hire, continuous education through teaching before employment, studying abroad, and so on, expansion and modernization of first-aid equipment, introduction and management of OAT institution for improvement of job satisfaction of first-aid staff.

• Journal of Families and Better Life
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• v.15 no.1
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• pp.1-12
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• 1997

This study is about understanding the single elderly's view on remarriage and finding factors that affect the remarriage which should provide basic data for the future research on the single elderly's view on remarriage. 251 single elderly men and women (divorced or widowed) were asked to answer the survey questionnaire which also involved individual interviews. A brief summary of the results of this study is as following. The elderly's view on remarriage significantly varies according to the factors like sex age and the number of children of the elderly cause of being single degree of loneliness need for remarriage degree of satisfaction out previous marriage prior remarriage experience. The degree of satisfaction out of previous marriage is high when they maintain cordial relationship with their children and the cause of breakup of marriage is death and the degree of loneliness is high and the period of the previous marriage is long while the period of being single afterward is short. Women's expectation level of remarriage is significantly different in most variables. But that of men's is not different significantly different in most variables. But that of men's is not different significantly in most variables. The satisfaction of the first marriage and the expectation level of remarriage are in positive correlation.

• Journal of Korean society of Dental Hygiene
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• v.6 no.2
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• pp.165-174
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• 2006

In order to establish basic data before deciding on the ways to manage school dental hygiene project, this study polled 165 elementary school teachers. Collected data was used SPSS 12.0 statistics program and got the technical statistics and This research and analysis came to the following conclusion by using Fridmen rank test, Pearson's correlation. 1. To the question about how they acquire the knowledge of dental hygiene, 60.6 percent of elementary school teachers turned out to learn about it through mass media(TV, Internet, magazines). 2. Regarding the purpose to maintain dental hygiene, "the prevention of dental diseases" ranked highest, and next "the prevention of cavity" and "the cure of halitosis" appeared at the similar level, and "to become a good model of children" and "to serve the esthetic purpose" ranked lowest. 3. As to the ways to prevent cavity, regular visits to dental clinic and daily brushing turned out to be more effective preventation method. 4. As for the degree of recognition of fluoride, the correct answer about fluoride that is recovered slight caries is appeared 11.8%, that was lowest correct answer ratio.

• Journal of Korean Academic Society of Home Health Care Nursing
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• v.26 no.3
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• pp.329-340
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• 2019

Purpose: This study aimed to provide basic data necessary to develop education programs and educational services for home care by investigating the degree of patient and family education among home health care nurses. Methods: Data collection was carried out with 145 people from 47 institutions that agreed to participate in the research. A total of 128 questionnaires were received, of which 122 were analyzed. Data were analyzed using SPSS 12.0. Results: The item on which education was most frequently delivered was intravenous injection speed control (66.4%), whereas the item requiring the longest teaching period was pressure ulcer care. The average degree of impediment perceived by home care nurses was 2.82 out of 5. Conclusion: Medical institutions should develop educational materials and programs that reflect the characteristics and degree of home health care needed. Repeated research, including that by medical institutions, on the degree and impeding factors related to patient and family education performance of home health care nurses should be conducted. Moreover, medical institutions should investigate the nursing and educational needs of patients and families who received home health care service.

• Journal of muscle and joint health
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• v.15 no.1
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• pp.33-40
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• 2008

Purpose: This study was to find out the relationships between helplessness and health behavior of patients with rheumatoid arthritis. Method: The subjects were 293 rheumatoid arthritis patients who visit 2 rheumatology outpatient clinics in G city. Data were collected by questionnaires including Arthritis helplessness index(Nicassio, Wallston, Callahan, Herbert, & Pincus, 1985)and health behavior assessment scale(Jo, Oh & Choe, 2000). The data were analyzed with Pearson correlation coefficient, t-test, ANOVA and Duncan's multiple range test. Results: The majority of the subjects were women and the mean age was 50.4years. The mean duration of illness was 8.9years. There were negative correlations between the degree of helplessness and the degree of health behavior. The degree of helplessness was significantly high in those who were older, female, less educated, out of workforce, and those who had no chances to attend any arthritis-related classes. The degree of health behavior was significantly low in those who were older, high school graduate, in higher economic status, married, and those who had chances to attend arthritis-related classes. Conclusion: To reduce the helplessness of rheumatoid arthritis patients, the nursing intervention which is to increase the health behavior should be developed and provided to the rheumatoid arthritis patients.

• The Journal of Information Systems
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• v.28 no.1
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• pp.73-96
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• 2019

Purpose The purpose of this study is to examine the effect of communication-structure characteristics on performance in online collaboration using the data from Github, one of representative open source software development platforms. We analyze the impact of in-degree/out-degree centralization and reciprocity of communication network on collaboration performance in each project. In addition, we investigate the moderating effect of owner types, an individual developer or an organization. Design/methodology/approach We collect the data of 838 Github projects, and conduct social network analysis for measuring in-degree/out-degree centralization and reciprocity as independent variables. With these variables, hierarchical regression analysis is employed on the relationship between the characteristics of communication structure and collaborative performance. Findings Our results show that for the project owned by an organization, the centralized structure of communication is not associated with the collaboration performance. In addition, the reciprocity is positively related to the collaboration performance. On the other hand, for the project owned by an individual developer, the centralized structure of communication is positively related to the performance, and the reciprocity does not show the positive relationship on the performance.

• Convergence Security Journal
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• v.23 no.2
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• pp.3-10
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• 2023

In the malware distribution network existing on the web, there is a central node that plays a key role in distributing malware. If you find and block this node, you can effectively block the propagation of malware. In this study, a centrality search method applied with risk analysis in a complex network is proposed, and a method for finding a core node in a malware distribution network is introduced through this approach. In addition, there is a big difference between a benign network and a malicious network in terms of in-degree and out-degree, and also in terms of network layout. Through these characteristics, we can discriminate between malicious and benign networks.