• Journal of Korean Home Economics Education Association
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• v.23 no.1
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• pp.37-51
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• 2011

The purpose of this study was to examine the effects of temperament, family strength and social support on ego-resilience of adolescents. Four hundred fifty middle and high school students in Incheon participated. Temperament, family strength, social support and ego-resilience were evaluated by self-report questionnaires. Data were analyzed using factor analyses, t-tests, descriptive statistics, correlations and standard multiple regression analyses. Results indicated that there was significant gender difference in ego-resilience. Adolescents' ego-resilience was positively associated with activity level and persistence in temperament, family strength and social support, but negatively associated with rigidity in temperament. Furthermore, gender, temperament, family strength and social support of class teacher and close friends significantly predicted ego-resilience of adolescents.

• Journal of Korean Tunnelling and Underground Space Association
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• v.22 no.5
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• pp.543-561
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• 2020

This paper is the result of the study on the effect of the support structure of the tunnel steel rib. In tunnel excavation, the top and bottom half excavation methods result in subsidence of steel rib reinforcement due to insufficient support of steel rib reinforcement when the ground is poor after excavation. The foundation of the steel rib installed in the upper half excavates the bottom part of the base, causing the subsidence to occur due to various effects such as internal load and lateral pressure. As a result, the tunnel is difficult to maintain and its safety is problematic. To solve these problems, steel rib support structures have been developed. For the purpose of verification, the behavior of the supporting structure is verified by model experiments reduced to shotcrete and steel rib material similarity, the numerical analysis of ΔP and ΔP generated by bottom excavation by Terzaghi theoretical equation. As a result, it was found that the support structure of 20.100~198.423 kN is required for the 10~40 m section of the depth for each soil of weathered soil~soft rock. In addition, as a result of the reduced model experiment, a fixed level of 50% steel rib deposit of steel rib support structure was installed. The study shows that the installation of steel rib support structures will compensate for uncertainties and various problems during construction. It is also thought that the installation of steel rib support structure will have many effects such as stability, economy, and air reduction.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.1
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• pp.247-253
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• 2012

The purpose of this study was to evaluate the effects of a visual flow speed's modulation-based VR(virtual reality) program on gait function in stroke patients. Thirty one stroke patients were randomly selected at Dep. of Rehabilitation medicine of M hospital in Seoul. We carried out the gait analysis by dividing them with four conditions : one condition had applied without the visual flow modulation-based VR and another had done three visual flow speed's modulation-based VR(0.25, 1, 2 times). The gait analysis was used with GaitRite system. The data were collected using gait velocity, cadence, stride length, step length, single support time, and double support time during treatment. The results were as follows. First, the slow visual flow(0.25 times)-based VR program on the condition was significant decrease gait velocity, cadence, stride length, step length and increase single support time, double support time(p<.05). Second, the fast visual flow(2 times)-based VR program on the condition was significant increase gait velocity, cadence, stride length, step length, single support time on paretic lower limb and decrease single support time on non-paretic lower limb, double support time(p<.05). Third, the normal visual flow(1 times)-based VR program on the condition was not significant differ gait velocity, cadence, stride length, step length, single support time, double support time. In conclusion, the visual flow speed's modulation-based VR program improves gait function in chronic stroke patients.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.9
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• pp.190-198
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• 2020

The purpose of this study was to investigate the changing trajectory of self-esteem and to explore contemporaneous and lagged effects of social supports(family, friends, and teacher) of 4th graders in elementary school to 9th graders in middle school. The subjects were 1,296 multiethnic students, who participated in the Multicultural Children and Adolescents Panel Study(MCAPS) from 2011 to 2016. The results of piecewise growth function showed that students' self-esteem was increased during upper grade in elementary school but soon deceased during middle school. Individual differences were found at initial, 1st and 2nd changing status. Students with higher level at initial status in self-esteem showed less increased pattern during elementary school but greater decreased pattern during middle school. In addition, supports from family and teacher showed contemporaneous effects across all 6 years while supports from friends showed such effects only for 5 years except 9th grade. Lagged effects of family were found in elementary school and significant lagged effects with supports from friends were found at 6th and 8th grade. The results of this study imply that the social support of family, friends, and teacher has an important role to encourage the self-esteem of multicultural adolescents.

• The Journal of the Korea Contents Association
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• v.15 no.6
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• pp.379-391
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• 2015

This study aims to understand family support and self-efficacy-mediated structural relation of college students' unemployment stress with their adaptation to school life. Findings of the research are summarized as follows. The study looked into how unemployment stress would directly affect self-efficacy, family support and adaptation to school life. It was found that the unemployment stress would have immediate negative effects on the self-efficacy, family support and adaptation to school life. In addition, the study noticed that with both family support and self-efficacy applied as mediating factors, unemployment stress influences college students' adaptation to school life indirectly and negatively. After the investigation on the immediate effects of family support in relation to the self-efficacy, the study indicated that family support has an immediate positive influence on the self-efficacy. In terms of self-efficacy, it appeared to affect adaptation to school life both positively and directly but, its indirect effects on the adaptation to school life was not confirmed. The study failed to find any direct influence of the family support on adaptation to school life but learned that the family support causes an indirect positive effect through self-efficacy, the mediating factor. In conclusion, the study suggests that adaptation to school life improves as long as unemployment stress decreases, while the family support and the self-efficacy are enhanced.

• Journal of the Korean association of regional geographers
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• v.19 no.4
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• pp.747-763
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• 2013

Books on world geography, so called "萬國地誌" had an important influence on changing Koreans' views of the world and the nation through the introduction of new world geographical knowledge during the period of modern enlightenment(1894~1910). "小學萬國地誌" was published in 1895 by Hakbu as an early world geography textbook. This study sought to discuss the significance and influence of "小學萬國地誌" by focusing on its contents organization and description style. The findings are as follows. The six regional contents organization adopted the modern regional geographical method by regional scale classification, describing the human geography based on the physical geography, comparing regional characteristics or studying the relationship between human and the nature. In addition, this textbook was written using the kukhanmun style that displays several characteristics of modern printing culture. Many geographical names were written in Korean characters and geographical knowledge was accepted actively from the modern world, subsequently contributing to the generalization of geographical knowledge. This textbook led to the transition of the Koreans' worldview from a China-centric focus by providing practical and specific knowledge about the world, toward the Korean modernization based on the multiple ideologies of social Darwinism and the advent of enlightenment, imperialism and nationalism.

• The Journal of the Korea Contents Association
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• v.7 no.11
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• pp.280-288
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• 2007

The purposes of this study were to examine the relationship between participation in sport for all, social support and solitude among the aged. To attain the goal of the study described above paragraphs, the older person resided in Seoul and Gyonggi, 2006 year were set as a collected group. Then, using the cluster random sampling method, finally drew out and analyzed 245 people in total. The result of reliability check up was here below; over Chronbach's ${\alpha}$=.775. To analyze materials, factor analysis, ANCOVA, multiple regression analysis and path analysis were used as statistic analysis techniques. The conclusion based on above study method and the result of material analysis are below. Based upon the result of the study, the conclusions are the followings; First, participation experience of sport for all don't influence on the social support. Second, participation experience of sport for all influence on the solitude. Third, participation degree of sport for all influence on the social support. Fourth, participation degree of sport for all influence on the solitude. Fifth, participation in sport for all indirectly and directly influence on the social support and solitude.

• The Journal of the Korea Contents Association
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• v.20 no.3
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• pp.309-323
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• 2020

The purpose of this study is to examine the structural relationship between psychological exhaustion, turnover intention, and social support of the dedicated workforce in order to investigate the effects of social support on psychological exhaustion, turnover intention of PAS assistant. Based on the results of the study, this study attempted to make the basic data for devising method to alleviate the intention to turnover of disabled PAS assistant. It was intended to help improve the quality of the activity support service. For this purpose, a questionnaire consisting of psychological exhaustion, turnover intention, and social support measures was conducted to 274 PAS Assistants of 11 service agencies in Seoul to verify the mediating effect of social support. In this study, the psychological exhaustion of PAS Assistants's showed a positive correlation, and the social support of the dedicated personnel perceived by the PAS Assistants's showed a negative correlation with the psychological exhaustion. Also, the social support of the dedicated workforce partially mediated the causal relationship between psychological exhaustion and turnover intention. The results of this study suggests that the social support of the dedicated personnel dedicated to support activities is high in reducing the psychological burnout and turnover intention of the PAS Assistant, it means that the social support of a dedicated workforce is an important resource in reducing the turnover intention.

• Journal of the Korean Geotechnical Society
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• v.15 no.2
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• pp.165-180
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• 1999

Static load tests were performed for open-ended piles, closed-ended piles, piles with grouted toe, and base-grouted piles by using calibration chamber. Then vertical bearing capacities determined from load tests were compared with each other. The stability of base-grouted pile during a simulated seaquake was investigated by changing the penetration depth. Also, static load tests and seaquake tests for 2-piles and 4-piles group were performed. The bearing capacity of the pile grouted inside the toe was 11.2~30.8% less than that of open-ended pile because of reduction of base resistance due to disturbance of base soil under pile toe. The bearing capacity of a base-grouted pile was 23.8~33.9% more than that of an open-ended pile and was similar to that of a closed-ended pile. The bearing capacity of base-grouted group pile was increased ; the bearing capacity of base-grouted 2-piles group increased 14.6~31.8% compared to that of open-ended 2-piles group, and that of base-grouted 4-piles group increased 15.3~22.4% compared to that of open-ended 4-piles group. During the simulated seaquake in deep sea, stability of base-grouted pile was found to be dependent on the pile penetration depth. During seaquake motion, single long base-grouted pile longer than 20m was stable and short base-grouted pile shorter than 12m failed. But relatively long base-grouted pile longer than 12m kept mobility state. Bearing capacity of base-grouted group pile with penetration depth less than 7m was degraded a little bit ; so, base-grouted group pile could maintain mobility condition.

• Journal of the Korea institute for structural maintenance and inspection
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• v.15 no.1
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• pp.198-208
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• 2011

When a structure which has relatively low load constructs on soft clay, the bearing capacity of the ground will be improved by sand overlying clay. In this condition, verifying the bearing capacity is difficult from the P.B.T etcetera in the in-situ. So, it is needed to estimate precise bearing capacity in the design process. In this study, 2-dimensional chamber tests and FEM analyses are conducted to evaluate behavior of bearing capacity for shallow foundations on a sand overlying clay. Because depth ratio H/B and bearing capacity ratio $q_c/q_s$ are selected as main factors, height of a sand, undrained shear strength of a clay and width of a loading are designated as variables. Results from chamber tests are very similar with those of FEM analyses. And it shows that punching shear mechanism is more suitable than the equation of Okamura et al.(1998). To make continual application of load spread mechanism, the equivalent load spread angle is proposed for H/B and $q_c/q_s$. Also, the linear regression equation of critical depth ratio Hf is suggested for $q_c/q_s$.