• 한국항해항만학회지
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• 제29권6호
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• pp.523-528
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• 2005

장애물이 있는 배관속의 점성유동을 다양한 난류모형을 적용하여 해석하였다. 적용한 난류모형은 k-$\epsilon$, k-$\omega$, Spalart-Allmaras, Reynolds stress 이고, 배관내의 격자는 구조격자(structured grid) 이다. 속도벡터, 압력분포 반복계산(iteration)에 의한 잔류치(residual), 양정(dynamic head) 등을 모사하였다. 4개의 난류모형을 배관유동에 적용하였고 상용 프로그램을 사용하여 해석을 수행하였다.

• 아태비즈니스연구
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• 제9권1호
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• pp.1-18
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• 2018

This study aimed to examine the effect of brand equity dimensions measuring the impact of brand equity on purchase intension of smart phones in Kathmandu. Descriptive and causal research design was used for the study. Structured questionnaires were administered for collecting data. Structured equation modeling was applied for validating the proposed model and measuring the influence of brand equity dimensions on purchase intentions of smart phones. Independent sample t-test and ANOVA was used to test the effect of moderating variables on purchase intention. The research fount brand loyalty and brand awareness were the influential factors for purchase intention of smart phones. Females performed significantly more than males in purchase intention. Qualification had no significant differences on purchase intention of smart phones. The findings of this study add values to the literature and its applicability of brand equity, brand awareness and purchase intensions which helps to formulate polices and strategies.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2003년도 The Fifth Asian Computational Fluid Dynamics Conference
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• pp.137-139
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• 2003

As a part of numerical and experimental research works for the prediction and improvement of ship's maneuvering performance, a study on the performance analysis of two different rudders has been carried out. While the planform shape and the aspect ratio of the rudders have been fixed, section shape has been changed. Conventional type of HMRI NP section and special type of dolphin-tail section have been employed. Performances of the rudders have been investigated by using CFD and compared with experimental data obtained in a wind tunnel. A commercial CFD program has been used to solve the RANS equations. Two-equation k-ro model has been applied to close the governing equations. Block-structured grids are used in the numerical calculation. Based upon the calculation results, the rudder with dolphin-tail section has shown a possibility of significantly improving rudder performance if utilized as the section of ship rudders.

• Journal of the Korean Data and Information Science Society
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• 제17권2호
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• pp.279-289
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• 2006

This paper concerns with the effects of the specialized projected for the local W university on education which was planned and conducted in October 2004. From the empirical study using the correlation analysis, regression analysis, and structured equation model, we found some results that educational service satisfaction was highly correlated with general instruction factor and hard ware factor less correlated. Also we investigated that university educational service satisfaction was deeply correlated with word of mouth.

• Asia pacific journal of information systems
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• 제14권2호
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• pp.151-172
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• 2004

본 연구는 가상커뮤니티의 상업화에 관한 연구이다. 가상커뮤니티의 상업화에 미치는 영향요인을 문헌조사에 의하여 정리하고 가상커뮤니티 사이트를 실증 분석하였다. 공변량 구조방정식을 이용하여 연구모형을 제시하였으며 215개의 설문내용에 대해서 통계분석을 하였다. 본 연구결과는 현재 가상커뮤니티를 구축하거나, 운영중인 기업의 의사결정과 운영 전략 수립에 기여할 수 있을 뿐 아니라 가상커뮤니티의 비즈니스 모델을 제시하는데 유용한 자료가 될 것이다.

• 한국정보시스템학회:학술대회논문집
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• 한국정보시스템학회 2003년도 춘계학술대회
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• pp.93-105
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• 2003

Although, recently, studies on Internet banking users' behavior have been frequently found in some academic journals, most of them have ignored security anxiety which may be considered as important factors influencing usages of Internet banking. We propose an research model for Internet banking users which is an extended version of the Technology Acceptance Model(TAM) by adding new variable, security anxiety. For empirical support of our model, we survey for 298 samples and analyze it by structured equation model(SEM). In result, our proposed model is proved as a valid one in which all hypotheses except one are accepted and the values of model fitness are relatively high.

• Journal of Information Technology Applications and Management
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• 제19권4호
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• pp.41-59
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• 2012

This study examines the roles of user resistance and social influences on the acceptance and continuous usage of smartphones at different stages of adoption. The respondents were classified into three groups according to their innovation adoption stage : non-user group, the potential user group and the trial user group. Theories relevant to user resistance, social influences including normative social influences and informational social influences, as well as user adoption and continuance behavior were reviewed and integrated into our research model. In order to verify the proposed structured equation model, we conducted an online survey by targeting mobile phone users and collected data to be analyzed through a partial least squares (PLS) test. This study tested whether there exists differences in the effects of user resistance and different types of social influence on user's adoption or continuance intetion among these three groups. The results showed that user resistance exists in all adopter groups and that it has significant negative influences on intention to use a smartphone. The findings also revealed that user resistance can be enhanced or resolved by two types of social influence; informational social influence resolves user resistance regardless of the adopter category, while normative social influence enhances the user resistance of potential users. Furthermore, the findings show that social influence regardless of the type positively affects user intention. Several theoretic and practical implications pertaining to the results are discussed.

• 재활복지공학회논문지
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• 제4권1호
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• pp.71-80
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• 2010

본 연구의 목적은 병원에서 기밀한 환자의료정보를 다루는 물리치료사와 작업치료사 행동의 예측모형을 개발하고자 하는 것이다. 계획된 행동 모델이론과 계획된 행동 모델에 습관, 사회적 압력, 업무 편리성의 변수를 추가하여 확장 모델 1, 2로 환자의료기록을 보장하는 물리치료사와 작업치료사의 행동에 영향을 미치는 전치 요소들을 설명하는 타당성을 검증하고자 하였다. A 시의 120명의 물리치료사와 작업치료사를 대상으로 설문조사를 실시하였다. 120부의 설문지가 배포되었으며, 110부가 회수되어 91.6%의 응답률을 보였다. Independent t test와 one-way ANOVA를 사용하여, 나이 임상 경력, 성별, 직장 내 구성원과 교육 수준에 따른 각 군 간의 차이를 검증하였으나, 통계적인 유의미한 차이는 없었다. 모델에서 제안된 개념들 간의 관계는 구조모형방정식을 사용하여 분석하였다. 구조모형방정식을 사용하여 분석한 결과 확장 모델 2가 TpB 모델과 확장된 모델 1보다 효과적인 모델로 나타났다.

• Journal of Information Science Theory and Practice
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• 제11권3호
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• pp.1-15
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• 2023

The present study examines the impact of value co-creation on satisfaction and intention to adopt of e-resources among users. Four components of the DART model have been adopted to describe value co-creation. These components are dialogue, access, risk-assessment, and transparency. Ph.D. scholars and faculty members from National Capital Region, India, were requested to respond on a five-point Likert scale. A total of 220 responses were collected with the help of a structured questionnaire from respondents of the top 50 business schools according to National Institute Ranking Framework. These responses have been analysed by means of structured equation modelling on Adanco 2.2 software. Findings of the study reported the insignificant impact of access and risk-assessment, and positive impact of dialogue and transparency on satisfaction. Further, satisfaction has been identified, creating significant impact on adoption of e-resources. Such findings reflect the real picture of customer experience with respect to their role in co-creation of e-resources. Respondents have conveyed their dissatisfaction with the co-creation process of e-resources, as companies do not provide all the information and access to their customers beforehand. Consequently, customers fail to make informed decisions and also find themselves unable to show trust in the service providers of e-resources.

• 한국전산유체공학회지
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• 제13권3호
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• pp.35-43
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• 2008

A methodology for the simulation of compressible high Reynolds number flow over rigid and moving bodies on a structured Cartesian grid is described in this paper. The approach is based on a modified version of the Brinkman Penalization method. To avoid oscillations in the vicinity of the body and to simulate shcok-containing flows, a Weighted Essentially Non-Oscillatory scheme is used to discretize the spatial flux derivatives. For high Reynolds number viscous flow, two turbulence models of the two-equation Menter's SST URANS model and a two-equation Detached Eddy Simulation are implemented. Some simple flow examples are given to assess the accuracy of the technique. Finally, a moving grid capability is demonstrated.