• Geomechanics and Engineering
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• v.6 no.3
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• pp.277-292
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• 2014

Soil nailing, as an effective stabilizing method for slopes and excavations, has been widely used worldwide. However, the interaction mechanism of a soil nail and the surrounding soil and its influential factors are not well understood. A pullout model using a hyperbolic shear stress-shear strain relationship is proposed to describe the load-deformation behavior of a cement grouted soil nail. Numerical analysis has been conducted to solve the governing equation and the distribution of tensile force along the nail length is investigated through a parametric study. The simulation results are highly consistent with laboratory soil nail pullout test results in the literature, indicating that the proposed model is efficient and accurate. Furthermore, the effects of key parameters, including normal stress, degree of saturation of soil, and surface roughness of soil nail, on the model parameters are studied in detail.

• Journal of Korea Society of Industrial Information Systems
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• v.12 no.5
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• pp.146-162
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• 2007

The purpose of this study was to investigate the nature of relationship among service quality, customer satisfaction and e-loyalty in e-learning site. In order to achieve the study purpose, survey method was applied. As a result, it was revealed that service quality had significant effects on customer satisfaction in e-learning site. The influential factors of service quality on customer satisfaction included convenience of use, personalization, tangibles, responsiveness, and reliability in e-learning site. In addition, service quality had significant effects on e-loyalty as well.

• Journal of Information Technology Applications and Management
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• v.25 no.2
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• pp.1-21
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• 2018

This study aims to investigate the usage patterns of users in Social Network Services (SNS) where is an upsurge. Specifically, the paper considers the reason why young people more and more prefer online (or mobile) SNS activities rather than offline face-to-face social relationship. Furthermore, the drivers which affect SNS usages are considered from users' personal characteristics and social influences. User's personal characteristics include their personalities (extraversion and introversion), narcissism, and life satisfaction. Social influences involve subjective norm, visibility, and image. Affected by personal and social factors in SNS, users intend to show positive self-presentation, which refers to a behavior to selectively expose his/her goodness to others. As one of the most influential drivers affecting SNS usage, the positive self-representation has an effect on the level of SNS usage. Thus, this paper suggests the hypothesized research model focusing on positive self-representation in the relationship among personal characteristics, social influence, and user's behavior in SNS. Empirical data analysis with 100 questionnaires suggests that all hypotheses were adopted except for the effect of visibility among social influence factors on positive self-representation.

• Transactions of the Korean Society of Automotive Engineers
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• v.11 no.4
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• pp.125-134
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• 2003

In this study, Mooney-Rivlin 1st model and Mooney-Rivlin 3rd model are adopted as strain energy density functions of the rubber compounds of a radial tire. It is shown that the FE analysis using Mooney-Rivlin models for rubber compounds may provide good approximations by employing the appropriate strain range of experimental stress-strain data in a way to describe the stress-strain relationship accurately. Especially, Mooney-Rivlin 3rd model gives an accurate stress-strain relationship regardless of the fitting strain range used within the strain of 100%. The static nonlinear FE analysis of a tire inflation is performed by employing an axisymmetric model, which shows that the outside shapes of the tire before and after inflating the tire agree well with those of the real tire. Additionally, the deformations at crown center and turning point on sidewall, distribution of belt cord force, interlaminar shear strain are predicted in terms of variation of belt cord angle which is known as the most influential factor in inflation behavior of a tire.

• Journal of Korean Society on Water Environment
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• v.35 no.4
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• pp.352-361
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• 2019

The purpose of this study is to analyze the characteristics and correlations of the Yeongcheon Lake in order to reduce the occurrence of harmful cyanobacteria. In this study, we investigated the water quality and phytoplankton of the lake from May to November in 2017. Correlation and data mining analyses were performed to analyze the relationship between the two factors. The water temperature was lowest at the point where the Yeongcheon Lake inflow occurs at Imha Lake. It was highest at the point where the outflow occurs to Angye Lake. The pH was also highest at the outflow point, but in the case of DO, it was highest at the midpoint between the inflow and outflow. The main cyanobacteria that emerged during the study period were Oscillatorialimosa, Microcysti saeruginosa and Aphanizomenon flos-aquae. As a result of correlation analysis, the water temperature, inflow, COD loading, TOC loading at the inflow point of the Yeongcheon Lake were the items that were related to the harmful cyanobacteria. The data mining analysis indicated that the TP loading and harmful cyanobacteria in the inflow point of the Yeongcheon Lake were influential on the detrimental cyanobacteria in the Yeongcheon Lake outflow point. When the TP loading was less than 39.0 kg/day at the inflow site, it was expected that the amount of harmful cyanobacteria could be maintained below 10,000 cells/mL.

• Asia-Pacific Journal of Business
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• v.14 no.3
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• pp.271-281
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• 2023

Purpose - The purpose of this study is to investigate influential attributes of intention to purchase in the context of cafe business. Design/methodology/approach - The explained variable is intention to purchase. This study used organic, healthiness, and nutrition disclosure as the main attributes to account for intention to purchase. Research target of this work is consumers experienced with Starbucks. The number of observation is 455. Multiple regression analysis is adopted for testing hypotheses. Findings - The results presented that organic positively affect healthiness. Also, nutrition disclosure positively moderates the relationship between healthiness and organic. Moreover, intention to purchase is positively influenced by healthiness. Research implications or Originality - Given the results, this informs cafe managers. Also, this research sheds light to the literature by unveiling the moderating effect of nutrition disclosure in the cafe consumer research domain.

• The Journal of Information Systems
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• v.24 no.2
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• pp.139-162
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• 2015

Purpose This study reviews technology acceptance research in the information system area and consumer behavior research in the marketing area, sets characteristics of convergence products, personality of consumers and communication channels as main concepts and demonstrates their effects on 'relative level of attraction' and 'intent to adoption. Design/methodology/approach The survey was conducted against potential consumers who have the intent to purchase electric communication media products that provides a variety of functions and service, such as a smart TV, a tablet PC and a smart watch. All items were adapted from previous literature and revised as appropriate the purpose of this study and measured on a 7-point Likert scale with answer choices ranging from "strongly disagree" (1) to (7) "strongly agree." Totally, 300 respondents participated in the survey. Out of the 276 respondents, incomplete or invalid 24 were discarded. With them, SPSS 18.0 and AMOS 20.0 for structural equation modeling were used for the analysis. Findings Main findings are as followed;- First, it is found that 'interrelationship of technology' and 'functional diversification' of convergence products has positive effects on relative level of attraction. Second, perceived behavior control has significant effects on the intent to adoption convergence products. Third, communication through mass media has positive effects on making potential consumers feel attraction about products while there is no relationship with the intent to a. On the other hands, it is demonstrated that there is no relationship influential relationship between communication through interpersonal channels and relative level of attraction while communication through interpersonal channels has significant effects on the intent to adoption.

• Journal of Korean Academy of Nursing
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• v.48 no.1
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• pp.59-69
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• 2018

Purpose: The purpose of this study was to investigate variables and construct paths that affect complicated grief. Methods: Participants in this cross-sectional, descriptive study were 164 bereaved spouses of cancer patients at least 12 months before the death. Data were collected from October 2016 to February 2017 using self-report structured questionnaires and were analyzed using IBM SPSS 21.0 and AMOS 20.0. Results: The variables affecting complicated grief of bereaved spouses of cancer patients were the quality of end-of-life care (${\gamma}=.15$, p<.001), preparedness for death (${\beta}=-.06$, p=.005), and coping with bereavement (${\beta}=-.24$, p<.001), whereas the quality of death and dying did not show any effects. Preparedness for death had multiple mediating effects in the relationship between the quality of end-of-life care and complicated grief (z=-2.20, p=.028), and in the relationship between the quality of end-of-life care and coping with bereavement (z=2.11, p=.035). Coping with bereavement had a mediating effect on the relationship between preparedness for death and complicated grief (z=-2.39, p=.017). Conclusion: This study revealed that preparedness for death and coping with bereavement play a prominent role in complicated grief. Therefore, it is important to help in preparing for death and enhancing coping with bereavement of spouses providing end-of-life care to cancer patients. In addition, investigating cultural differences in the relationship between the quality of end-of-life care and complicated grief is recommended.

• Industry Promotion Research
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• v.3 no.2
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• pp.53-61
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• 2018

The conclusions of this study are as follows. First, family support has the greatest influence on school adjustment flexibility, and the following is family function. Second, the effect of family protection factors on the interest in the school was found to have a statistically significant effect on the relationship between parents and family support. Third, the factors affecting the attitude toward the achievement of the family, the relationship with the parents, the family support, and the family function were not found to be influential. Fourth, as a result of examining the factors influencing the compliance with school norms, it was found that the better the family function, the better the adherence to school norms. In conclusion, the relationship between parents and their parents was significant. This was to know how important parental relationship, family function, and family support are in the adjustment of single parent families.

• Korean Journal of Childcare and Education
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• v.8 no.4
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• pp.207-230
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• 2012

The purpose of this study was to examine which variables of interest predicted young children's adjustment to childcare centers. The variables of interest in the study include children's individual variables(gender, age, and temperament), peer competence, and relationship with teachers. The subjects were 130 preschoolers aged 2 to 3 and their mothers and teachers. SPSS 15.0 program was used to analyze the data of the study. The results showed the statistically significant differences in children's adjustment to childcare centers by gender. Also, statistically significant relationships were found between children's adjustment to childcare centers and their temperament, peer competence, and relationship with teachers. Finally, the results of regression analyses revealed that children's conflicts with teachers, closeness to teachers, and leadership in peer competence were found to be the influential predictor of children's adjustment to childcare centers. Implications for research and practice were discussed in the light of the study results.