• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.5
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• pp.206-215
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• 2020

This study analyzes the relationship between K-CESA of undergraduate students, and their coaching skill and creativity confluence competences. Totally, 344 students attending private colleges in G province were evaluated for their competence. The data collected were analyzed by descriptive statistics, Pearson's correlation analysis, multiple regression analysis and Sobel test, using the SPSS/PC 22.0 computer program. Our results indicate that K-CESA, coaching skill, and creative convergence fulfill the assumption of normality. Moreover, significant positive relationships were determined between K-CESA and creativity confluence, as well as between coaching skill and creativity confluence. Furthermore, K-CESA was an important factor that predicts the creativity confluence competency, and coaching skill had mediating effects on the relationship between K-CESA and creativity confluence competency. In conclusion, our results indicate that K-CESA and coaching skills are important factors that will help strengthen creativity confluence competences.

• Composites Research
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• v.19 no.2
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• pp.13-19
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• 2006

In this paper, parametric study was carried out to design sandwich structures for EDM machines controlling stacking sequence, stacking thickness of composites and rib configuration. Sandwich structures which are dealt with in this paper are composed of fibre reinforced composite for skin material and foam or resin concrete for core materials. The sandwich column has cruciform rib to enhance bending stiffness of the structure and the bed has several vertical ribs to resist the normal forces and vibration. The design parameters such as rib thickness and stacking sequence were controlled to enhance the system robustness. Finite element analysis was also carried out to verify the variation of static and dynamic stiffness of the structures according to the variation of the parameters. Vibration tests were performed to verify the natural frequencies and damping ratios of the manufactured composite structures. The appropriate shape and configuration conditions for micro-EDM machine structures are proposed.

• Composites Research
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• v.34 no.5
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• pp.305-310
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• 2021

Mechanical properties of fiber reinforced composites were affected to fiber volume fractions (FVF) and interfacial property by sizing agent conditions. An optimum interface can relieve stress concentration by transferring the mechanical stress from the matrix resin to the reinforcements effectively, and thus can result in the performance of the composites. The interfacial properties and wettability between the epoxy resin and glass fiber (GF) were evaluated for different sizing agent conditions and FVFs. The surface energies of epoxy resin and different sizing agent treated GFs were calculated using dynamic and static contact angle measurements. The work of adhesion, W_a was calculated by using surface energies of epoxy matrix and GFs. The wettability was evaluated via the GF tow capillary test. The interfacial shear strength (IFSS) was evaluated by microdroplet pull-out test. Finally, the optimized GFRP manufacturing conditions could be obtained by using wettability and interfacial property.

• The Journal of the Convergence on Culture Technology
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• v.8 no.6
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• pp.421-427
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• 2022

This study was to examine the effect of lower extremity muscle strengthening exercise on balance and fall efficacy in middle older adults women. This study was conducted with one group pre-test and post-test design. A total of 34 older adults women participated in 7 weeks of intervention. Data were analyzed as SPSS ver. 21.0 using descriptive statistics and paired t-test. Right leg balance(t=6.09, p<.001), left leg balance(t=6.76, p<.001), and fall efficacy(t=6.81, p<.001) were significantly increased. Dynamic balance(t= -4.68, p=.001) was significantly decreased. This study found that lower extremity muscle strengthening exercise program could be a useful health promotion method.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.11
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• pp.5019-5026
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• 2011

The purpose of this study was to investigate the effect of the increased sympathetic outflow on the changes of muscle tone and central nervous system excitability in the chronic stroke patients. This study was conducted from October 12th 2009 to December 4th 2009. 30 patients with chronic hemiplegia for at least 6 months were participated. Before and during the mental arithmetic, static handgrip and post-handgrip ischemia tasks, the central nervous system action potentials and global synkinesis level were compared. The central nerve action potentials were measured with H/Mmax ratio and V/Mmax ratio. To obtain global synkinesis level, surface electromyography data were digitized, processed to root mean square. In our study, The global synkinesis level during knee flexion and extension was decreased in the mental arithmetic and in the post-handgrip ischemia task(p<.05) but not in the grip task. Also, V/Mmax ratio was decreased all in the three task(p<.05). In conclusion, we know that the central nervous system excitability and the muscle tone in chronic hemiplegic patients were decreased by the increased sympathetic outflow.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.2
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• pp.717-724
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• 2014

Although team cohesion can be a double-edged sword, empirical studies have focused positive effect of team cohesion. This study claims that team cohesion can be divided social task cohesion, so we can investigate positive effect of social cohesion and negative effect of task cohesion on technological innovation. Cohesion emphasize homogeneity, thus creativity supporting team climate alleviate negative effect of social cohesion and increase positive effect of task cohesion. This study has used materials collected from 205 NPD teams The results show negative effect of social cohesion(${\beta}$=-.19, p<.01), positive effect of task cohesion(${\beta}$ =.18, p<.05), positive interactive effect between social cohesion and creativity supporting team climate(${\beta}$=.14, p<.10) and positive interactive effect between task cohesion and creativity supporting team climate(${\beta}$=.16, p<.05) on technological innovation.

• Proceedings of the KAIS Fall Conference
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• 2010.11b
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• pp.595-598
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• 2010

본 연구의 목적은 뇌졸중으로 인한 만성 편마비 환자를 대상으로 발에 시지각 자극을 적용하여 균형과 보행에 관한 운동기능에 미치는 효과를 알아보고자 하였다. 6개월 이상 된 편마비 환자 16명이 연구에 참여하였고, 무작위로 실험군(EG) 10명과 대조군(CG) 10명으로 구분하였다. 두 군 모두 기본적인 물리치료를 적용하였고 실험군은 정적균형도구인 Tetrax Multiple System을 이용하여 발목에 감각되먹임 시지각 자극을 매회 30분, 4주간 주 3회 실시하였다. 운동 중재 전과 후의 운동기능에 해당하는 균형(TUG), 보행(DGI)을 측적하여 본 연구의 효과를 비교하였다. 실험군에서 정적 균형, TUG, 그리고 동적 균형지수(DGI) 지수는 중재 전후 통계적으로 유의한 차이를 나타냈고(p<.05), 실험, 대조군간 전후의 변화율에서도 유의한 차이가 나타났다(p<.05). 대조군에서는 DGI 만 중재 전후 통계적으로 유의한 차이가 나타났다. 순수하게 유산소 운동만을 실시하였다. 통계처리 방법으로 전 후 차이를 검증하기 위하여 대응표본 t 검정을 실시하였고 대조군과의 차이 검증을 위하여 독립표본 t 검정을 실시하였다. 모든 통계적 유의수준은 0.05로 하였다. 본 연구에서는 편마비 환자에게 흥미를 촉진하고 운동 기능 회복의 효과를 강화할 수 있는 감각 되먹임이 동반된 시지각 자극을 적용하여 균형 및 보행기능의 향상을 얻을 수 있었고, 차후 연구는 장기간의 추적 관찰 연구가 지속되어야 하고 발목 뿐만 아니라 다른 관절에서의 비교연구가 필요할 것이다.

• Journal of Convergence for Information Technology
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• v.10 no.8
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• pp.213-222
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• 2020

This research aimed to verify whether family competency reinforcement had a mediating role on the effect of family cohesion of the Down syndrome family upon the independent life of children with Down syndrome. For the research, 146 families belonged to Down Syndrome Parent Assembly were surveyed and the statistical program SPSS WIN 25.0 was utilized for the data analysis. To verify the mediating effect, Baron and Kenny's causal step strategy was performed. As a result of the study, the higher the family cohesion of the Down syndrome family was, the greater the level of independence of the child was, indicating that the family cohesion had a significant static effect on the independence life. In addition, it was confirmed that the family competency reinforcement played a mediating role between the family cohesion and the children's independent living. Therefore, the results of this research suggested that it might be used as a policy approach and supporting plan for the realization of support for independence of Down syndrome children.

• Journal of the Korean Society of Propulsion Engineers
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• v.18 no.5
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• pp.29-34
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• 2014

Particulate reinforced composite is composed of hard particles and polymer matrix. This material has been widely applied for engineering industry such as automobile, construction and aerospace. For the safe application, it is important to assess crack resistance behavior. Especially in aerospace industry, crack could cause significant problem when the material is used for solid rocket fuel. Therefore, it is inevitable to estimate the characteristics of the crack propagation. In this study, crack propagation tests were conducted using particulate reinforced composite under crosshead rate 2.54 mm/min in the range of temperature $-60^{\circ}C$ to $60^{\circ}C$. The strain contour of surface for specimen was generated using digital image correlation method.

• Korean Journal of Social Welfare
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• v.66 no.2
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• pp.127-157
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• 2014

The multicultural family support project provides support services to female marriage immigrants to promote their settlement in Korea and their adaptation to marital life. This study thus investigated whether utilization of such support services is indeed related to positive changes perceived among these female marriage immigrants, and these changes, in turn, contribute to less marital conflict, marital well-being, and hope. Data were drawn from a self-administered questionnaire study in which 558 female marriage immigrants participated through the 36 centers across the nation that provided multicultural family support services based on cultural relativism and a strengths perspective. Results of structural equation modeling analyses revealed that utilization of support services, as predicted, contributed to positive changes, and such changes, in turn, were directly related to less marital conflict, higher marital well-being, and hope. As expected, marital conflict was negatively associated with marital well-being, which, in turn, promoted hope. Thus, through these paths positive changes also contributed positively to both marital well-being and hope. However, when the effects of length of residence in Korea and an ability to command Korean language were controlled for, a positive significant relationship between service utilization and marital conflict was revealed. Therefore this paper discussed the ways in which positive functions of such service utilization can be strengthened while at the same time actively addressing the dysfunctional components of such support services.