• Transactions of the Korean Society of Mechanical Engineers
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• v.17 no.1
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• pp.90-100
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• 1993

A finite element formulation of vibration control of a laminated plate with piezoelectric sensor/ actuators is presented. Classical lamination theory with the induced strain actuation and Hamilton's principle are used to formulate the equations of motion of the system. The total charge developed on the sensor layer is calculated from the direct piezoelectric equation. The equations of motion and the total charge are discretized with 4 node, 12 degrees of freedom quadrilateral plate bending elements with one electrical degree of freedom. The mass and stiffness of the piezoelectric layer are introduced by treating them as another layer in laminated plate. Piezoelectric sensor/actuators are distributed, but discrete due to the geometry of electrodes. By defining an i.d. number of electrode for each element, modelling of electrodes with variable geometry can be achieved. The static response of a piezoelectric bimorph beam to electrical loading and sensor voltage to given displacement are calculated. For a laminated plate under the negative velocity feedback control, the direct time response by the Newmark-.betha. method and damped frequencies and modal damping ratios by modal state space analysis are derived.

• Journal of the Economic Geographical Society of Korea
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• v.17 no.4
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• pp.660-674
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• 2014

This paper analyzes the social cohesion effects of creative industrial as a core role player of emerging new economic paradigm of the creative economy using the case of Seoul Metropolitan Area(SMA) that is a typical cluster of creative industries in Korea. This study reclassified the creative industries in a Korean context into 13 industries in 6 sectors. Based on this reclassification, the study found out that the spatial pattern of creative industries in SMA is spatially much differentiated in terms of specialization, which demands more differentiated cluster strategy with different policy mix. This paper also investigates the social cohesion effects of creative industries using structural equation modelling. It turns out that the growth of creative industries is likely to contribute to the regional development capacity and also to provide positive effects on various aspects of the social cohesion.

• The Journal of the Korea Contents Association
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• v.16 no.12
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• pp.781-793
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• 2016

This research is to investigate the impact of strengths use and development on individual perceived performance. The present research aimed at exploring the role of harmonious passion and concentration on individual perceived performance and in this relation verify the group difference by the level of strengths use. This study was conducted on a sample of 460 employees and structural equation modelling analyses were performed to test the proposed model. The results showed that harmonious passion and concentration is positively related to individual perceived performance. In the relation between harmonious passion and perceived performance, there was the difference between high strength use group and low strength use group. Over all, the findings provide encouraging support for the potential benefits of employee's strengths use at work and the importance of intrinsic motivation variable on perceived performance. In addition practical implications on developing employee strengths use are discussed.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.11
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• pp.469-477
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• 2020

The main objective of this paper is to examine the applicability of Linan and Chen's entrepreneurial intention model (EIM) in predicting the entrepreneurial intention. EIM is an adaptation of the Theory of Planned Behavior that focuses on entrepreneurial intention and hypothesizing slightly different patterns of relationship with regards to subjective norms. The model also includes human capital and demographic factors. Snowball sampling method was used to collect data using the entrepreneurial intention questionnaire (EIQ) through several social media platforms. The survey indicates that the overall entrepreneurial intention of Saudi students is high (mean = 5.41). Eight out of the seventeen hypothesized relationships were found to be significant. Among the demographic variables, gender-personal attitude was significant whereas self employment experience and years of business education were found to be significantly related with perceived behavioral control. The statistical analysis using partial least square structural equation modelling validated the model. All the three antecedents of entrepreneurial intention were significantly related with entrepreneurial intention. The results of this study will help policy makers to get deep understanding into the phenomenon of entrepreneurship among Saudi university students and thereby develop a conducive environment. This study also validates the entrepreneurial intention model in a different cultural context.

• Journal of Construction Engineering and Project Management
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• v.9 no.3
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• pp.1-21
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• 2019

The management of mega construction projects which incorporate a large number of stakeholders, technologies, data, work culture etc., is cumbersome. The experts in the construction arena advocate that interface management serves as a precise tool in resolving these conflict points due to the intricate nature of the construction projects. Interface management is a current trending management practice in the construction industry which is also a beneficiary to mega/fast track projects in enhancing the project performance. The main objective of this study is to validate a model for assessing the relationships among interface management, IT applications, project performance & project benefits. The mediating effect of interface management in relationship between project performance & interfacial factors was also investigated. The research model was validated using PLS-SEM (Partial Least Square-Structural Equation Modelling) approach. Data were collected from clients, contractors, consultants in large scale projects through questionnaire survey and smart-PLS software was used to analyse the conceptual model. The research model comprises eleven hypothesis and the significance of these hypothesis were tested using T- statistics values. The research implies that people/participants factor is greatly influenced by interface management with the path coefficient of 0.608 and also enhancement of project's schedule performance due to the interface management is strongly appealing (Path coefficient = 0.711). The results also reveal IT application is significantly associated with interface management practice (Path coefficient =0.723) and also the effect of IT application on project performance (schedule, cost, quality & safety) is successfully mediated through interface management practice. The practical application of this validated model was done through case study. The case study aims at measuring the impact of interface management on interfacial factors and role of interface management in improving the project performance in the construction organisations.

• Journal of Digital Convergence
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• v.11 no.7
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• pp.111-122
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• 2013

The purpose of this study was to investigate the relationships among intrinsic motivators, psychological empowerment, affective commitment, and service quality among hotel industry employees. For this study, data were collected from 233 hotel employees in Seoul Metropolitan City with self-administered questionnaires and analyzed using structural equation modelling technique. This study found that two job characteristics variables(job challenge and job autonomy) had positive effects on hotel employees' psychological empowerment; that three job characteristics variables(job challenge, job variety and job autonomy) and psychological empowerment had positive effects on hotel employees' organizational commitment; and that psychological empowerment and organizational commitment had positive effects on hotel employees' service quality.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.9 no.3
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• pp.107-117
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• 2014

The Purpose of this study was to empirically investigate the effects of core competencies on the management performance of hospitals and the mediating roles of medical service orientation and internal customer orientation. The sample of this study was composed of 307 employees from 18 general hospitals in Incheon Metropolitan City and Bucheon City. Data were collected with self-administered questionnaires and analyzed using structural equation modelling technique. This study found that core competencies had positive effects on the management performance of hospitals and that medical service orientation and internal customer orientation mediated the relationship between core competencies and the management performance of hospitals. The theoretical and practical implications of the results were discussed and the directions for future research were suggested.

• Journal of the Korean Data and Information Science Society
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• v.23 no.3
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• pp.559-568
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• 2012

This paper deals with the relations between the quality of life and the life satisfaction of the elderly based on the 2008 national survey data of the actual living condition of the elderly and welfare need. We found that the questions about the quality of life is categorized by three groups such as self consolidation, harmony between generations and hope for later activity, which is the order of the power of the affection to life satisfaction. The result of this paper could be used as a basic document for taking efficient actions for the welfare services to the elderly.

• Journal of Digital Convergence
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• v.19 no.9
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• pp.115-123
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• 2021

The primary purpose of the study is to investigate museum visitors' intention to use of smart tourism contents by applying the extended technology acceptance model. The study conducted an online survey of a convenience sampling of individuals who visited the National Museum of Korea, and it conducted confirmatory factor analysis and structural equation modelling to test hypotheses of the study. The results showed that information quality of immersive digital gallery in the National Museum of Korea had a significant regression weight on both perceived ease of use and perceived usefulness, and perceived ease of use had a significant regression weight on perceived usefulness. Moreover, both perceived ease of use and perceived usefulness had a significant regression weight on intention to use. The findings indicate that it is necessary to develop smart tourism contents with easily accessible and usable digital applications for promoting smart tourism in the museum.

• Journal of Korea Trade
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• v.25 no.7
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• pp.75-91
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• 2021

Purpose - Social commerce (SC) is the growth of social media highlighting the e-commerce transactions and currently, the greatest challenges of e-commerce have attracted the influence of trust in social commerce intention (SCI). Based on the challenge, the study's purpose is to discover the effect of social support (informational and emotional support) on the SCI. The study also explores the mediation effect of trust and the moderation impact of culture between the USA and Korea. Design/methodology - This study used a sample of 482 surveys filled out by online shoppers from the US and Korea, two countries with divergent cultural values. Structural equation modelling (SEM) is used to analyze the hypothetical paths. In addition, bootstrapping and multi-group analysis are perform to view mediation and moderation effects respectively. Findings - The results of our study shows that both informational and emotional support significantly influences trust and SCI. Our results also supports the mediating effect of trust in social support and the moderating effect of culture in forming SCI. Originality/value - Our empirical results provide important information to businesses formulating cross-cultural SC strategies. This will help SC companies to analyze the aspects of customer trust through social support, which in turn will increase SCI and thereby established a competitive position for SCs. Our results will also be holistic directions for SC vendors in cross-cultural settings, which will offer important social and economic contributions to the sustainable growth of SC's business.