• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 1999.05a
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• pp.173-176
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• 1999

Crosslinked Decree is an important 7actor to determine dielectric property of crosslinked polyethylene(XLPE) used for the insulation material in Power cables. Recently, though it is necessary to investigate electrical properties according to crosslinked degree as a Part of the whose characterization of cable. it is not examined closely. In this study. crosslinked degree of samples were measured according to temperature and holding time of crosslinking. electrical tree characteristics of these characteristics of these samples were analyzed by crosslinked degree and applied temperature that was chanced from normal temperature to operating temperature of power cables. As a result. when the crosslinked degree was low, dielectric properties were decreased and influence of temperature was increased. but the crosslinked degrees were high, initiation voltages of treeing were increased and dielectric properties were improved. It is proved that the optimum crosslinked degree was one of most important factor for aging time and residual lifetime of Power cable.

• Journal of Korean Home Economics Education Association
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• v.8 no.2
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• pp.15-28
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• 1996

The purpose of this study is to investigate the family life participation and to analysis its related variables focusing on comparisons of male and female in the secondary students. The questonaire included school environmental variables, family environmental variables, the preference degree of Home Economics, sex role attitudes and the family life participation. The participants were 600 middle and high school students but the final data used on this study were 559. For the statistical analysis of this study, fequency, mean, Cronbach’s ${\alpha}$ coefficient, one way ANOVA, t-test and multiple regression were calculated. The results of this study were summarized as follows；1) The degree of family life participation was a little higher than middle level. While the highest participation degree was family activities participation, the participation degree of household work, communication and decision-making, leisure activities were low. 2) The variables that influence on the family life participation were the level of living and preference degree of Home Economics for both male and female.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.36 no.6
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• pp.502-507
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• 2010

Introduction: This study examined the genetic influence of mandibular prognathism epidemiologically in Korean families. Materials and Methods: Over a 5-year period from 2005 to 2009, a questionnaire with a pedigree chart was given to 100 (male 51, female 49) probands with skeletal Class III mandibular prognathism, who had undergone orthognathic surgery in Samsung Medical Center. Results: The average age of the probands was 22.1. The average SNA, SNB and ANB angles of the probands were $81.2^{\circ}$, $84.1^{\circ}$ and $-2.9^{\circ}$, respectively. A total of 2729 (male 1,354, female 1,375) family members were examined, and the affected ratio of the families was 3.5% with no significant difference between genders. 45% of families had at least one member with a Class III malocclusion other than the proband. The affected ratio of the first-degree relatives (10.9%) was significantly higher than those of the second-degree (3.3%) and third-degree (1.9%) relatives. The affected ratio of the total relatives from the male probands (4.2%) was significantly higher than that of the female probands (2.8%). Heritability ($h^2$, Falconer' method) was estimated to be 29.8% ($0.298{\pm}0.059$) in first-degree relatives. Conclusion: These results showed the significant influence of mandibular prognathism with relatively low heritability in first-degree relatives in Korean families of probands, who had undergone orthognathic surgery to correct a skeletal Class III malocclusion.

• Korean Journal of Human Ecology
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• v.14 no.1
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• pp.233-239
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• 2005

This study was conducted to investigate how much influence home environment and satisfaction degree with a undergraduate major have on female students' college adjustment. For this purpose, 190 undergraduate females participated in and completed all measures, and we analysed the data with SPSS computer programs. The results of this study are as follows: First, home environment and college adjustment have a positive correlation. Also, the students' satisfaction degree with their majors and college adjustment are positively correlated. Second, their satisfaction degree with a major was found to be different according to what year they are in. Third, the students' college adjustment was found to be different according to the satisfaction degree with their majors. Fourth, the female undergraduates' college adjustment was found to be different according to their home environment.

• Journal of the Korea Convergence Society
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• v.9 no.10
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• pp.131-139
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• 2018

The purpose of this study is to examine the dental hygienists' awareness on the 4th industrial revolution in preparation for the future of dental treatment field. A questionnaire survey was conducted on 209 dental hygienists who are working at dental clinics in Daegu city and the results were as follows. The average awareness on the 4th industrial revolution was 2.41, which is comparatively low. In each section, the willingness to education was 2.87, the influence to dental field was 2.81, the perception degree was 2.25 and the preparation degree was 1.72 which is relatively low. The awareness according to general characteristics, there was a significant difference from age and workplace in influence to dental field (p<0.05, p<0.001), from job position and academic degree in willingness to education (p<0.05). According to the study of correlation among awareness, influence, preparation and willingness of education to 4th industrial revolution. Also there was a positive (+) correlation in everyway, as awareness level is high, the degree of influence, preparation and willingness of education are also high. In conclusion, to prepare for the future medical convergence, it is necessary to raise concern and change in perception to high medical technology by developing and offering diverse education programs as to 4th industrial revolution to dental hygienists.

• Research in Community and Public Health Nursing
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• v.8 no.1
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• pp.61-73
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• 1997

The purpose of this study was to identify the degree of perceived powerlessness and the factors which influence the powerlessness of the elderly. Data were collected by self-reported structured questionnare from 210 subjects living in Kwang-Ju and Che-Ju cities on 5th to 17th February 1996. Data were analyzed using statistical package SAS. The findings were as follows : 1. The mean scores of the degree of perceived powerlessness of the subjects were 58.90 out of 85. The elderly people in Kwang-Ju city perceived more powerlessness than elderly people of Che-Ju city. 2. The factors which influence the powerlessness of the elderly were age, gender, education level, living standard, spouse, former and present job, health condition, family support, social and recreational activities. From the results of this study, to alleviate the powerlessness of the elderly, with the efforts of health maintenance and promotion various community based social activities and support system should be developed for the elderly.

• Computers and Concrete
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• v.2 no.1
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• pp.1-18
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• 2005

This paper presents a study on the effects of localized steel-concrete bond degradation on the flexural behaviour of RC beams. A finite element analysis is undertaken to complete the experimental analysis. The first part deals with an experimental study on beams where bond was removed by using plastic tube at different locations and for various lengths. The flexural behaviour was studied at global scale (load-deflection) and local scale (moment-curvature). The second part, a numerical study using a simplified special finite element (rust element) modelling the rust layer occurring between reinforcement and concrete with corrosion was conducted in order to find the relation between the degree of corrosion and the degradation of the steel-concrete bond. The computed value of the corrosion degree corresponding to the total degradation of bond has been used in a second time to model the tests, in order to evaluate the influence of the loss of bond, the steel cross section reduction, and the combination of both. The results enable to evaluate the influence of the different corrosion effects on the flexural behaviour, according to the length and the location of the corroded zone.

• Korean Journal of Human Ecology
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• v.16 no.5
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• pp.1041-1050
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• 2007

The purpose of this study was to investigate the variables which had effects on deit behavior of male and female high school students. The proposed variables are their body-related variables(body satisfaction, weight control experience, the degree of diet interest, and obesity) and self-esteem. The sample group used for the study consisted of 359 high school students(male=168, female=191). Measurement scales used for the study were those of body-related variables, self esteem and eating disorder behavior, and data analysis was performed using $X^2$, t-test, Pearson's correlation, regression analysis. The results are as follows. First, there is a significant difference between male and female high school students regarding their obesity perceived by themselves, body satisfaction, the degree of diet interest, weight control experience, and deit behavior. Second, In male students, diet behavior shows a positive correlation with the degree of diet interest, weight control experience, and body satisfaction, but shows a negative correlation with body satisfaction. In female students, diet behavior is positively correlated with the degree of diet interest, weight control experience, and obesity, but negatively correlated with body satisfaction and self-esteem. Third, in male students, the variables that showed a influence on diet behavior as an eating disorder are weight control experience, body satisfaction and obesity, in that the explanatory power of the variables is 51.7% with the highest mark on obesity. In female, the variables that showed a influence on diet behavior as an eating disorder are the degree of diet interest, weight control experience, body satisfaction and obesity, in that the explanatory power of the variables is 66.0%.

• Journal of the Korean Society of Costume
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• v.54 no.4
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• pp.113-127
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• 2004

This study examined the trend of pattern which appeared throughout men's clothing fashion magazine from 1999 to 2002 and the influence which the demographic characteristic have on the sensibility dimension of pattern and the preference degree of kinds of pattern. The results of study were as follows. 1) The pattern which was used most frequently on recent men's clothing was a length stripe, and the representation technique which was used most frequently on recent men's clothing was the technique of a geometric expression. 2) The pattern which men and women preferred most out of ten kinds of patterns-length stripe, width stripe, oblique stripe, check, square, waterdrop, paisley, flower of style shape, flower of realistic shape, flower of shape-was a length stripe. 3) The sensibility dimension of pattern image was composed of fascination, dignity, daring, gentleness, and reality. 4) Because sensitivity dimension and kinds of pattern were significant according to the distinction of sex, vocation, academic career, income, this study can conclude the demographic characteristic have an influence on sensitivity dimension and kinds of pattern.

• Journal of the Korea Society of Computer and Information
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• v.20 no.12
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• pp.107-113
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• 2015

This study analyzed the effect of the factors of introducing information technology(organizational and environmental characteristics) on non-financial performance. As detailed variables of each characteristic, the technical support/task force, users' IT capability, and education/training were used for the organizational characteristics while the degree of competition, external pressure, and uncertainty of environment were used for the environmental characteristics. In the results of the analysis, such factors like technical support/task force, users' IT capability, and education/training of the organizational characteristics had significant influence on non-financial performance. Also, factors such as degree of competition, external pressure, and uncertainty of environment of the environmental characteristics had significant influence on non-financial performance.