• Journal of Korean Tunnelling and Underground Space Association
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• v.19 no.5
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• pp.685-703
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• 2017

Recently, as the number of high-rise building and earthquake occurrence are increasing, it is more important to consider horizontal load such as wind and seismic loads, earth pressure, for the pile foundation. Also, development of underground space in urban areas is more demanded to meet various problem induced by growing population. Many studies on pile subjected to horizontal load have been conducted by many researchers. However, research regarding interactive behavior on pile subjected to horizontal load with tunnel are rare, so far. In this study, therefore, study on the behaviors of ground and horizontal and vertical loads applied to single pile was carried out using laboratory model test and numerical analysis. The pile axial force and ground deformation were investigated according to offset between pile and tunnel (0.0D, 1.0D, 2.0D: D = tunnel diameter). At the same time, close range photogrammetry was used to measure displacement of underground due to tunnelling during laboratory model test. The results from numerical analysis were compared to that from laboratory model test.

• International Commerce and Information Review
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• v.14 no.4
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• pp.253-273
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• 2012

The purpose of this study was to examine the impact of the uncertainty of competitive environments on the commitment of manufacturing firms with distribution firms, their trust and long-term orientation in Korea, the United States and Japan. This study is of great significance in that it attempted to make a comparative analysis of the uncertainty of competitive environments among the three nations by selecting subjects not only from Korea but from the United States and Japan. A survey was conducted on the selected manufacturing firms, and the data from 105 Korean firms, 103 American companies and 83 Japanese firms were gathered. A structural equation was utilized to analyze the collected data. The findings of the study were as follows: Hypothesis 1 was rejected in Korea and Japan and was accepted in the United States. Hypothesis 2 was accepted in Korea yet not in the United States and Japan. Hypothesis 3 was accepted in all the nations. Hypothesis 4 was rejected in Korea and the United States and was accepted in Japan. Hypothesis 5 was accepted in all the nations, and Hypothesis 6 was accepted in every nation as well. In the future, the commitment, trust and long-term orientation of manufacturing and distribution firms should be investigated from a mutual perspective, and additional data should be obtained by selecting more subjects. As for environmental uncertainty, the uncertainty of distribution environments as well as competitive environments should equally be investigated by making a comparative analysis.

• Journal of Digital Convergence
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• v.13 no.5
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• pp.129-137
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• 2015

This study was carried out to verify application motive for consulting upon the path between quality perception and use of results in the government-supported convergence consulting service on SMEs. A survey was conducted on SMEs which went through government-supported consulting, with the following results of the study. First, it turned out that the perception of the quality of consultant's performance and the perception of the quality of the government support have a positive impact on the perception of the quality of consulting results. Second, the perception of the quality of consultant's performance has a positive impact on the use of consulting results. Third, it was proved that the perception of the quality of the government support has no impact on the use of consulting results. Fourth, it was demonstrated that the perception of the quality of consulting results has a positive impact on the use of consulting results. Fifth, it turned out that there is a difference in paths of non-voluntary application group and application group and application group for consulting service. This study implies that it is necessary to reinforce consultant's competence, government support system and voluntary application for consulting.

• Journal of the Korean Association of Geographic Information Studies
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• v.14 no.2
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• pp.96-108
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• 2011

Going abreast of high public concerns on the environment, the need of environmental modeling has been increased to assess the impact of space exploitation of environment. GIS offers potential solutions to the many problems encountered during water-quality modeling. But there are also many problems associated with the modeling. The preparation of necessary parameters for the modeling can be complicated. Also, the results from one model can be different from each other even the same area is analyzed. This paper aims to develop the data processing system to couple the Qual2E and HyGIS in which Qual2E input and output data files can be created, modified and processed using HyGIS and assess the performance of the system. A structural analysis and standardization of modeling are conducted to identify data flow and processing of Qual2E. Algorithms of the defined processors are designed and developed as component modules. The data model of HyGIS-Qual2E is designed, and GUI(Graphical User Interface) is developed using Visual Basic 6.0 and GDK.

• Korean Journal of Social Welfare
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• v.63 no.1
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• pp.159-185
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• 2011

This study aims to find out the determinants of male police officers' investigative behavior(active investigation vs. secondary victimization) of sexual violence. For this purpose, a hypothetical model which explains the relationships among the 5 variables (knowledge of law about the investigative role, perception of the protective & connective role, prejudice against the sexual violence, active investigation, and secondary victimization) was developed. Using the data collected from 354 male police officers of 3 cities in Gyeongnam area, the hypothetical model was tested. For data analysis, a structural equation modeling was used, and the final model was found(CFI=0.947, IFI=0.948, RMSEA=0.048). As a result of analyzing the model, the followings were found: (1) Active investigation was increased by knowledge of law about the investigative role, and perception of the protective & connective role, while decreased by prejudice against the sexual violence. (2) Secondary vicimization was decreased by knowledge of law about the investigative role. (3) Prejudice against the sexual violence mediate the effects of knowledge of law about the investigative role, and perception of the protective & connective role on active investigation. (4) Prejudice against the sexual violence was found to have no significant effect on secondary victimization. Based on the findings, multi-educational programs, protocols on investigation of sexual violence, professionalization of the police, and changes in investigation environment as well as a system of collaboration and cooperation between police officer and social worker were suggested as a way to increase active investigation and to decrease secondary victimization.

• Journal of Service Research and Studies
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• v.7 no.2
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• pp.17-41
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• 2017

The purpose of this research is to investigate the factors that impact customer satisfaction and loyalty in mobile payment services. Specifically, this research (1) studies the influence of company reputation on customer satisfaction and loyalty, (2) examines service quality dimensions that increase customer satisfaction, and (3) assesses switching barriers as moderators in influencing customer loyalty. Findings of this empirical research reconfirm the point of view that company reputation, service quality, and switching barriers are crucial for customer satisfaction in mobile payment services. The research methodologies that were used to verify the hypothesis in this study included customized surveys and structural equation modeling. The results demonstrated that company reputation significantly affects customer satisfaction and loyalty. Additionally, the results indicated that only two of the five total service qualities, ease of use and the security/privacy qualities, have positive influences on customer satisfaction. Customer satisfaction has also proven to be a significant influence on loyalty. Lastly, the results showed that among the factors of switching barriers, the factors of lost performance costs, sunk costs, setup costs, the attractiveness of alternatives, and service recovery have moderating effects on the relationships between customer satisfaction and loyalty. Base on the results, this research recommends that firms aim at devising integrated strategies that make switching barriers act as complements to customer satisfaction.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.11
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• pp.7424-7432
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• 2015

The purpose of this study is to find out the effectiveness of four leadership types to employees that affected by leaders of the University-Industry Collaboration Foundation(UICF). This study has analyzed through structural equation modeling(SEM) using AMOS after surveyed for 178 employees out of 404 employees about IUCF of 35 universities in nationwide. In order to examine the power of influence that leadership types of leader how to improve organizational effectiveness on IUCF, leadership types were classified with transformational leadership(TFL), transactional leadership(TAL), coaching leadership(CL) and servant leadership(SL) as independent variables and job satisfaction(JS), organizational commitment(OC) and self efficacy(SE) as a dependent variables. The results are following; first, job satisfaction and organizational commitment were affected by transformational leadership, transactional leadership and coaching leadership. second, self-efficacy was not statistically significant for power of influence that affected by transactional leadership and servant leadership. third, the employees of UICF in connection with self-efficacy were only weak affected by transformational leadership and coaching leadership. fourth, job satisfaction, organizational commitment and self-efficacy as the three dependant variables were not utterly influenced by servant leadership.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.1
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• pp.258-267
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• 2020

In this study, we examine the mediating effect of resilience on the relationship between grit and self-determination in college students in order to provide basic data for ensuring the positive development required for college students to understand their collective, as well as their individual, abilities. This study comprised college students sampled from three cities in Chungcheong province: Daejeon, Sejong, and Cheonan. The collected data were analyzed using AMOS 22.0 statistical software. The results of this study are as follows. First, firmness of mind and courage in the face of hardship (based on the resilience of college students) was found to have a statistically significant, positive effect on that resilience. Second, this grit in college students has a statistically significant, positive effect on their self-determination. Third, the resilience from college students' self-determination revealed that resilience has a statistically significant, positive impact on their self-determination. Fourth, we found after verifying the mediating effect of resilience in the relationship between grit and self-determination of college students that resilience has a mediating effect in the relationship between grit and self-determination. This study is significant in that it provided empirical grounds for self-determination in college students by identifying the relationship between the motivational variables affecting their self-determination.

• Journal of Navigation and Port Research
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• v.39 no.6
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• pp.539-544
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• 2015

There is drift toward moving offshore structures operating sites to deep water that brings subsea systems and types of apparatus to meet more severe environment than onshore. At this moment, climatic condition and seabed state affect trenching efficiency so trenching process is need to make steady progress in a short time. This paper is research on estimation about construction performance of waterjet trenching machine mounted on ROV trencher. Optimal number of nozzles that can maximize trenching efficiency is selected by considering clearance and angle of nozzles through CFD. Then verified effectiveness of waterjet apparatus on the result of trenching depth and velocity by model test analogized performance for construction work of waterjet trenching machine.

• The Journal of the Korea Contents Association
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• v.19 no.10
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• pp.581-592
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• 2019

This study investigates the factors that stimulate or suppress the use of food delivery applications. As potential antecedent factors, the present research examined the review diagnosticity, descriptive norms, and multidimensional risk perception. Based on this, users' data were collected from major metropolitan cities where the food delivery application business is most active. The results of structural equation modeling confirmed that users' approach to food delivery apps becomes more favorable when the review diagnosticity and descriptive norms were improved and when the perceived multidimensional risk expected to be associated with app use is mitigated. Additionally, we found that the positive influence of these attitudes on the actual intention to accept delivery applications became weaker at higher levels of perceived risk. These empirical results may contribute to the formation of strategic and systematic guidelines for promoting the expansion of the recently emerging O2O service platform across diverse sectors. Namely, the significance of this study lies in that it has raised awareness regarding the strategic considerations that such new O2O service providers should take into account for their market positions, in addition to discovering factors that could aid the prompt expansion of the applications' user base.