• Journal of Convergence for Information Technology
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• 제12권2호
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• pp.1-16
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• 2022

Social network service (SNS) using mobile or web is growing rapidly, and the emergence of various platform services is causing innovative changes in social network service (SNS). This study is to identify the target relation factors of social network users and to empirically study the causal relationship of how much these factors affect user satisfaction through pleasure and self-efficacy. To present an effective and efficient development plan in. In order to empirically verify the research model of this study, a survey was conducted with the general public who had experience using social network services (SNS). Path analysis was performed. As a result, it was possible to verify the correlation of the object relational factors on user satisfaction through pleasure and self-efficacy.First, non-excluded had a significant effect on pleasure, but did not significantly affect self-efficacy. Second, stability attachment did not significantly affect both enjoyment and self-efficacy. Third, social ability did not significantly affect both enjoyment and self-efficacy. Fourth, self-centeredness did not have a significant effect on both enjoyment and self-efficacy. Fifth, pleasure had a significant effect on both self-efficacy and user satisfaction. Sixth, self-efficacy had a significant effect on user satisfaction.

• The Journal of Engineering Geology
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• 제25권3호
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• pp.377-385
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• 2015

We constructed a model test apparatus to evaluate the dependence of the saturation velocity (V_s) in soils on rainfall intensity (I_R). The apparatus comprises a soil box, a rainfall simulator, and measuring sensors. The model grounds (60 cm × 50 cm × 15 cm) were formed by Joomunjin standard sand with a relative density of 75%. The rainfall simulator can control the rainfall intensity to reenact the actual rainfall in a soil box. Time Domain Reflectometer (TDR) sensors and tensiometers were installed in the soils to measure changes in the volumetric water content and matric suction due to rainfall infiltration. During the tests, the soil saturation was determined by raising the groundwater table, which was formed at the bottom of the soil box. [Please check that the correct meaning has been maintained.] The wetting front did not form at the ground surface during rainfall because the soil particles were uniform and the coefficient of permeability was relatively high. Our results show that the suction stress of the soils decreased with increasing volumetric water content, and this effect was most pronounced for volumetric water contents of 20%-30%. Based on a regression analysis of the relationship between rainfall intensity and the average saturation velocity, we suggest the following equation for estimating the saturation velocity in soils: V_savg (cm/sec) = 0.068I_R (mm/hr).

• Journal of the Korean Association of Geographic Information Studies
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• 제21권4호
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• pp.202-217
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• 2018

Urban land use changes by human activities affect spatial configuration of urban areas and their surrounding ecosystems. Although it is necessary to identify patterns of urban land use changes and to simulate future changes for sustainable urban management, simulation of land use changes is still challenging due to their uncertainty and complexity. Cellular automata model is widely used to simulate urban land use changes based on cell-based approaches. However, cell-based models can not reflect features of actual land use changes and tend to simulate fragmented patterns. To solve these problems, object-based cellular automata models are developed, which simulate land use changes by land patches. This study simulate future land use changes in Hanam city using an object-based cellular automata model. Figure of merit of the model is 24.1%, which assess accuracy of the simulation results. When a baseline scenario was applied, urban decreased by 16.4% while agriculture land increased by 9.0% and grass increased by 19.3% in a simulation result of 2038 years. In an urban development scenario, urban increased by 22.4% and agriculture land decreased by 26.1% while forest and grass did not have significant changes. In a natural conservation scenario, urban decreased by 29.5% and agriculture land decreased by 8.8% while each forest and grass increased by 6% and 42.8%. The model can be useful to simulate realistic urban land use change effectively, and then, applied as a decision support tool for spatial planning.

• The Korean Journal of Coaching Psychology
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• 제7권1호
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• pp.33-57
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• 2023

This study conducted an e-mail survey of office workers working in large companies in Seoul and Gyeonggi-do to verify the structural relationship between meaning in work, work-life balance, life satisfaction, and depression. The study participants were 329 male and 176 female workers, and a total of 505 ($\bar{M}=38.0$ yrs, $\bar{SD}=8.1$ yrs), and the measurement tools used the Korean version of work meaning scale, work-life balance scale, Korean version of life satisfaction scale, and shortened CES-D. After establishing a research model on the structural relationship between major variables, the measurement model and structural model were verified using the collected data, and the applicability of the model was reviewed through comparison according to group classification by gender and age group. As a result of the analysis, it was found that the work-life balance had a partial mediating effect on the effect of the meaning in work on the life satisfaction and depression of office workers. As a result of analyzing the multi-group structural model by age group, the mediating effect of work-life balance did not differ by age in the effect of meaning in work on life satisfaction, but the mediating effect of work-life balance on meaning in work on depression was different by age. These results suggest that the emphasis needs to vary depending on the target group in the practice of individual and group coaching and counseling.

• Journal of Korean Academy of Nursing
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• 제47권2호
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• pp.257-266
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• 2017

Purpose: The aims of this study were to construct a hypothetical structural model which explains premenstrual coping in university students and to test the fitness with collected data. Methods: Participants were 206 unmarried women university students from 3 universities in A and B cities. Data were collected from March 29 until April 30, 2016 using self-report structured questionnaires and were analyzed using IBM SPSS 23.0 and AMOS 18.0. Results: Physiological factor was identified as a significant predictor of premenstrual syndrome (t=6.45, p<.001). This model explained 22.1% of the variance in premenstrual syndrome. Psychological factors (t=-2.49, p=.013) and premenstrual syndrome (t=8.17, p<.001) were identified as significant predictors of premenstrual coping. Also this model explained 30.9% of the variance in premenstrual coping in university students. A physiological factors directly influenced premenstrual syndrome (${\beta}=.41$, p=.012). Premenstrual syndrome (${\beta}=.55$, p=.005) and physiological factor (${\beta}=.23$, p=.015) had significant total effects on premenstrual coping. Physiological factor did not have a direct influence on premenstrual coping, but indirectly affected it (${\beta}=.22$, p=.007). Psychological factors did not have an indirect or total effect on premenstrual coping, but directly affected it (${\beta}=-.17$, p=.036). Conclusion: These findings suggest that strategies to control physiological factors such as menstrual pain should be helpful to improve premenstrual syndrome symptoms. When developing a program to improve premenstrual coping ability and quality of menstrual related health, it is important to consider psychological factors including perceived stress and menstrual attitude and premenstrual syndrome.

• The Journal of the Korea Contents Association
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• 제18권5호
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• pp.131-148
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• 2018

The objective of this study is to evaluate the degree programs commissioned by the ROK Armed Forces, and to search for improvements. In order to achieve the purpose of this study, a research model was designed according to the CIPP evaluation model of Daniel Stufflebeam. The researcher conducted an analysis of documents, interviews, surveys, and data associated with the commissioned degree programs. On the basis of empirical analysis, this study debated various ways of improving the programs. This study found that the object of commissioned education in the Army did not actively reflect national defense strategy nor the army strategy in cultivating talented people. Nevertheless, this study found that the educational program helped improve individual competency because the budget for the programs was sufficient and was effectively implemented. However, there are not enough personnel to administer these commissioned programs. The contents of education strongly reflected the objective of the original commission's programs. However, the research papers produced by the students did not live up to the needs of the military to some extent. Lastly, most graduate students were satisfied with this program and found the program to be very helpful to carry out their missions and cultivate their expertise.

• Journal of Practical Engineering Education
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• 제11권2호
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• pp.291-303
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• 2019

The purpose of this research was to investigate the effect of the achievement goal orientation on college students' life satisfaction and sense of the belonging. This study used the analysis of the latent growth model to comprehend the slope of the 3 years longitudinal data. The result was that mastery approach and mastery avoidance affected the initial value of college life satisfaction, but not its slope as the time of 3 years went. On the other hand, performance approach was the opposite of mastery approach and mastery avoidance to college students' life satisfaction. Performance avoidance did not have an influence on both the initial value and the slope of college students' life satisfaction. The effect of the achievement goal orientation to the sense of belonging was also explored and its result was that mastery approach and mastery avoidance affected the initial value of the sense of belonging. However, it was different that performance approach did not influence the slope of the sense of belonging.

• The Journal of the Korea Contents Association
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• 제20권3호
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• pp.92-105
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• 2020

This study was aimed to identify factors affecting the purchase of indemnity private health insurance and analyze its effect on healthcare utilization by gender. This study analyzed data of the 2010-2016 Korea Health Panel Survey using panel logit model and panel regression model. Men were less likely to purchase indemnity private health insurance than women. Self-rated health and unmet need for healthcare in women were related to insurance purchases. In men, married people and residents of the metropolitan area were more likely to purchase. The indemnity private health insurance did not affect the women's outpatient expenses per visit, but for men it increased. The indemnity private health insurance significantly increased women's inpatient expenses per admission, but it did not affect men's inpatient expenses. This study confirmed gender differences in the factors affecting the purchase of indemnity health insurance and the impact of indemnity health insurance on healthcare utilization. This suggests that gender differences should be taken into account in private health insurance research and institutional operation.

• Geotechnical Engineering
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• 제11권4호
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• pp.25-36
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• 1995

A specially designed model open -ended pile, which was composed of inner tube and outer tube, wry driven in the pressure chamber by two diffenent intallation methods, that is, impact -driving and vibratory driving, and static compression loading test was done for that pile. Through the measurement of bearing capacities in the separated resisting parts of open -ended pile, bearing mechanism of open-ended pile and soil plugging behaviors for different installation methods were studied. It appears that 20% out of soil plugging force of impact -driven pile was developed during driving, while the rest was developed during static compression loading and t.he magnitude of confining pressure applied to the chamber did not affect soil plugging behavior. Also. it appears that, soil plugging force of vibratory pile was not developed during driving, while it was developed weakly as about 0.5~0.7 times as that of impact pile during static compression loading. and the confining pressure of pressure rhamber had an effect on the soil plugging. In the ultimate loading condition unit soil plugging force did not approach to the failure condition.

• Korea Trade Review
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• 제42권5호
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• pp.93-112
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• 2017

The purpose of this study is to analyze the effects of FTA information learning in export SMEs. Therefore, this study has constructed an integrated model including the moderating effects of FTA information learning on the of export performance in SME. The relationship between SMEs' localization strategy, product innovation capacity, and FTA information learning was linked to export performance, and an empirical analysis was conducted on 195 export SMEs. The path analysis was performed using the structural equation model(SEM), and six hypotheses including the control effect were tested. As a result, the localization strategy of SMEs positively influenced product innovation capacity. On the other hand, FTA information learning did not show significant results. Product innovation capacity and FTA information learning as an antecedents showed significant results in terms of export performance. In the moderated effects analysis, the moderated effect between the localization strategy and FTA information learning did not show significant effect on the product innovation capacity. Whereas the moderated effect between the product innovation capacity and the FTA information learning significant influence on the export performance of SMEs.