• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.35 no.11
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• pp.1022-1027
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• 2007

Experimental and computational studies on a turbopump inducer with and without a bearing strut were performed to evaluate the effects of a strut on the performance of an inducer. Head rise, efficiency and surface static pressures were measured and compared with computational results. Generally a good agreement is observed between experimental and computational results, but some discrepancies are observed due to complex flow features such as backflows at the inlet and strut/inducer interactions. For the flow rates where the backflow region is large, installing a strut enhanced the hydraulic performance of the inducer by diminishing the size of the backflows. The results also show that the strut has negligible effect on the suction performance of the inducer.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.9
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• pp.6027-6035
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• 2015

The purpose of this study was to examine influential factors for the transition to college life and career identity of nursing students and what changes social support from parents brought about to them by academic year. The subjects in this study were 542 selected students who majored in nursing in four-year universities located in Seoul and the provinces. A self-administered survey was conducted to find out their general characteristics, social support from fathers and mothers, college adjustment and career identity. A hierarchical regression analysis was made to determine how social support from parents affected the college adjustment and career identity of the nursing students. Social support from parents had an impact on their college adjustment and career identity. The factors that affected college adjustment were academic year, satisfaction level with major and emotional support from mothers, and the factors that impacted on career identity were academic year, satisfaction level with major and informative support from fathers. In order to facilitate the college adjustment of nursing students, professors should try to develop efficient learning methods, meet with parents to inform them of the necessity of social support, share information on the major field of study and learning methods, and provide an opportunity for students to communicate with graduates or students who are years ahead of them in college so that they could have a better understanding of majoring in nursing.

• Journal of the Korean Vacuum Society
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• v.22 no.6
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• pp.277-284
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• 2013

Carbon coils could be synthesized using $C_2H_2/H_2$ as source gases and $SF_6$ as an incorporated additive gas under thermal chemical vapor deposition system. The Ni layer on the $SiO_2$ substrate was used as a catalyst for the formation of the carbon coils. The characteristics (formation densities, morphologies, and geometries) of the as-grown carbon coils on the substrate with or without the $H_2$ plasma pretreatment process were investigated. By the relatively short time (1 minute) $H_2$ plasma pretreatment on the Ni catalyst layered-substrate prior to the carbon coils synthesis reaction, the dominant formation of the carbon microcoils on the substrate could be achieved. After the relatively long time (30 minutes) $H_2$ plasma pretreatment process, on the other hand, we could obtain the noble-shaped geometrical nanostructures, namely the formation of the numerous carbon nanocoils along the growth of the carbon microcoils. This noble-shaped geometrical nanostructure seemed to play a promising role as the good catalyst support for holding the very tiny Ni catalyst grains.

• Korean Journal of Childcare and Education
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• v.8 no.2
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• pp.63-80
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• 2012

This study examined the relationship among temperament, social support and hope of institutionalized children. A total of 198 children, aged 10 to 13, recruited from 20 institutions in Seoul participated. Demographics, temperament, social support from friends, institution-family and school teacher, and hope were assessed by self-report. Results showed that in bivariate level, temperament and social support were significantly associated with level of hope. However, hierarchical multiple regressions indicated that children's hope was predicted only by age and social support from friends, institution-family and school teacher. That is, temperament was not contributed to predict hope, whilst social support contributed unique variance to the prediction of hope, controlling for age. The more social support the children felt they had, the higher levels of hope they reported. Further analyses revealed that support from friends, institution-family and school teacher were influential factors in explaining hope agency, while support from institution-family and school teacher were influential factors in explaining hope pathway of institutionalized children, controlling for age.

• Korean Journal of Child Education & Care
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• v.17 no.4
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• pp.71-90
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• 2017

This study aimed to investigate structural relationships of social support between job satisfactions and educare teacher's vocational calling. This study conducted a questionnaire survey on 270 educare teachers in Chungcheong area (Daejeon and Chungnam). The survey was conducted from July 1, 2017 to August 14, 2017. And it used 257 responses(95.1%) for analysis data except 14 responses due to their unfaithful or unreliable replies. Research results of analysis were as below. First, direct effect of vocational calling on social support was statistically significant. Second, it showed that both vocational calling and social support had positive effect. Third, it was found that vocational calling had significant influence on job satisfaction through social support. In conclusion, it was known that job satisfaction became higher if vocational calling of educare teachers received social support. It is required to systematically establish social and psychological support system raising vocational calling of educare teachers.

• Journal of Korean Home Economics Education Association
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• v.28 no.4
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• pp.45-59
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• 2016

The purpose of this study was to examine the mediating effects of social supports on the relationship between child-rearing burden and psychological well-being among grandmothers. Data was collected from 249 grandmothers raising preschooler grandchildren who live in Gwangju by self-reported questionnaires. The method used for data analysis was structural equation modeling analysis using SPSS 22.0 and Amos 22.0. The results of this study revealed that child-rearing burden influenced social supports of grandmothers. Social supports influenced psychological well-being of grandmothers. Child-rearing burden influenced psychological well-being of grandmothers. The structural equation modeling analysis indicated that social supports partially mediated the relationship between child-rearing burden and psychological well-being.

• Geotechnical Engineering
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• v.9 no.4
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• pp.37-44
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• 1993

Model pile tests in calibration chamber are performed in order to study the two factors that the pile bearing capacity is significantly influenced by. Those factors are the critical depth concept and the scale effect caused by pile diameters. Firstly, the predicted values of end bearing capacity from the various static formulae were compared with the measured ones from model pile tests. Secondly, the critical depth concept and the scale effect were investigated by using two different soil conditions in a series of calibration chamber tests : the one is uniform sand : and the other is weathered granites overlayered by sand. Main results obtained from the model tests can be summarized as follows : (1) The end bearing capacity was increased with pile penetration depth up to penetration ratio of 7 to 8 when the cell pressure is high, and the critical depth was observed in the current chamber tests with uniform sand layer , (2) The predicted end bearing capacities were mostly lager than the measured, and it was found that the differences between the predicted and the measured values became smaller as the pile penetration ratio was increased : (3) The end bearing capacity of the small diameter pile in weathered granites layer was mostly less than that of the larger pile, while in uniform sand layer it was vice.

• Journal of the Korean Applied Science and Technology
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• v.40 no.6
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• pp.1249-1258
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• 2023

The purpose of this study was to reveal the effect of COP variable of support feet on relative reach distance and composite score of active feet during YBT. 29 adults in their 20s(age: 24.4±3.0 yrs, height: 171.0±10.5 cm, weight: 72.1±12.1 kg, leg length: 88.2±5.8 cm) participated in the study. Using YBT, relative reach distance and composite score of active feet were calculated, and COP variables of support feet were measured on left and right support feet. Multiple regression analysis was used to determine the effect of COP variables of support feet during YBT on relative reach distance and composite score. As a result of the study, during YBT, when supporting right feet, the influence of AP COP velocity, ML COP velocity and COP velocity in posterolateral direction was significant, and when supporting left feet, the influence of AP COP velocity, ML COP velocity in posteromedial direction improved relative reach distance and composite score.

• Journal of Korean Home Economics Education Association
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• v.28 no.4
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• pp.139-158
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• 2016

The purpose of this study was to explore the effects of career experiential learning and parental support on career maturity of high school students. The number of subjects for this study was 290 high school students. The results are as follows. First, the effects of attitude in career maturity were higher for students with communication, field trip and visiting, and field experience in career experiential learning. However, career planning did not have any correlation with field experience types of attitude in career maturity. The effect of competency in career maturity was positively correlated with student experience with theory, communication, and field trip and visiting in career experiential learning. Second, parental support showed a significant positive correlation with all factors of career maturity. Third, results identify career maturity impacts on career experiential learning. The types of communication as well as field trip and visiting significantly affected all components of career maturity. The type of theory was a factor affecting competency. In addition, the results reveal the impact of parental support on the career maturity. Emotional support had a significant influence on all factors for career maturity, except for career exploration. Informative support was found to have a significant influence on career planning, career independency and career exploration. Financial support had a significant influence on occupational attitude, career independency and career exploration.

• 한국노년학
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• v.31 no.3
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• pp.795-811
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• 2011

Recently, an interest on how to moderate parenting stress of grandparents is rising according to rising depression of grandparents of grandparents and grandchildren family(GGF) because of parenting stress So, this study tried to analyze moderating effects by setting social support and stress coping behaviors as moderator variable in order to know how much parenting stress of grandparents would influence their depression. For this purpose, we selected 369 cases of grandparents who were being provided social welfare service and to 334 cases out of them, did multigroup analysis using hierarchical regression analysis and structural equation model under spss Vor. 19.0 program. Followings are the results. First, the more parenting stress was high, the more depression high. But when social support was high, parenting stress low. And the more parenting stress was high, faith dependence, negative emotional expression and passive evasion as stress coping behaviors also high while problem reestablishment low. Second, emotional support, information support, and material support as social support had moderating effects in which parenting stress influenced depression while appraisal support had not. Third, faith dependence and low passive evasion as stress coping behaviors had moderating effects in influence of parenting stress to depression while problem reestablishment has not. On the one hand, emotional expression was meaningless in explaining moderating effects in connection with parenting stress. Through these, we draw a social welfare practical implication that could lift moderating effect of social support and stress coping behavior in between parenting stress and depression of grandparents of grandparents and grandchildren Family.