• 산경연구논집
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• 제13권9호
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• pp.11-26
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• 2022

Purpose: Manufacturers rely on interfirm governance mechanisms to reduce the risks inherent in uncertain environments; however, it is unclear which governance mechanisms are developed to manage relationships with suppliers. This study sought to enhance knowledge of how environmental uncertainty affects interfirm governance mechanisms under conditions reflecting varying levels of structural holes. To this end, the study investigated the relationships between manufacturers and major first-tier and sub-suppliers. In particular, the moderating effect of structural holes is examined. Research design, data and methodology: A questionnaire survey was conducted with a major first-tier supplier of a Korean engineering firm. Proposed hypotheses were tested using structural equation modeling. Results: The results show that while the relationship between environmental uncertainty and unilateral governance is positive but statistically insignificant, with bilateral governance is negative and statistically significant. The study also demonstrates that when structural holes are considered, the effects between environmental uncertainty and governance mechanisms are attenuated. Conclusions: This study suggests some theoretical and managerial contributions between exchange partners, especially, the results suggest that structural holes have a critical competitive advantage in uncertain environments. Therefore, manufacturers should carefully consider how they deal with environmental uncertainty when they make a business decision under structural holes situations.

• Structural Engineering and Mechanics
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• 제11권1호
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• pp.89-104
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• 2001

This paper reviews the author's work on the development of relationships between solutions of the Kirchhoff (classical thin) plate theory and the Mindlin (first order shear deformation) thick plate theory. The relationships for deflections, stress-resultants, buckling loads and natural frequencies enable one to obtain the Mindlin plate solutions from the well-known Kirchhoff plate solutions for the same problem without much tedious mathematics. Sample thick plate solutions, deduced from the relationships, are presented as benchmark solutions for researchers to use in checking their numerical thick plate solutions.

• 지식경영연구
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• 제13권4호
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• pp.55-69
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• 2012

This paper developed measurement indices for intellectual capital of public R&D organizations and investigated causal relationships among the components. We developed 10 measurement factors and 37 indicators and confirmed the reliability of these measurements. We offered an alternative to the existing model for searching causal relationships. From our survey research, using the structural equation model, we found a new relationship. In contrast to the existing model, we found a cycling relationship among three variables: human capital causes structural capital, structural capital causes relational capital, and relational capital causes human capital.

• 농촌지도와개발
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• 제30권3호
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• pp.131-141
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• 2023

This study aims to examine the structural relationships among leisure activity, psychological capital, and quality of life in rural healing tourists. Data were collected from 407 workers who had experience in rural healing tourism through an online survey. SPSS 28.0 and AMOS 28.0 were used for frequency, confirmatory factor, and structural equation modelling analysis. The results of structural equation modelling indicate participation in leisure activities had a positive effect on psychological capital. Psychological capital had a positive effect on quality of life. The results of this study suggest that leisure activities play an important role in improving workers' psychological capital. Through rural healing tourism, various outdoor activities, cultural activities, and social interaction with people using rural resources can help improve the psychological capital of workers.

• 한국보육지원학회지
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• 제12권2호
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• pp.73-88
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• 2016

The present study was designed to examine the structural relationship between mothers' perceptions of their relationships with their parents and husbands (as the predictors of parenting self-efficacy), mothers' parenting self-efficacy (PSE), and parenting behaviors among contemporary Korean mothers. A sample of 95 Korean mothers of pre-school,1st, 2nd, and 3rd grade elementary school children in Seoul, South Korea were recruited. Mothers were asked to respond to a survey that captured mothers' perceptions of their relationships with their parents and husbands, PSE, and their parenting behaviors. Structural equation modeling(SEM) was applied to analyze the hypothesized model. The results indicate that mothers who perceive their relationships with their own parents as positive were more likely to have higher PSE. In addition, mothers who reported higher PSE levels were less likely to be inconsistent in their parenting behaviors and more likely to be responsive in their parenting behaviors. The results of this study underscore the importance of PSE as a psychological resource that enables contemporary Korean mothers to parent in positive ways. Furthermore, these findings emphasize the importance of mothers' perceptions of their social relationships as a factor that contributes to higher PSE.

• International Journal of Reliability and Applications
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• 제3권4호
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• pp.173-184
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• 2002

This paper introduces the joint structural importance of two components in a coherent system. Some relationships between joint structural importance and marginal structural importance are presented. It is shown that the sign of Joint structural importance can be determined, in advance, without computation in some special structures. The joint structural importance of two components in some series-parallel and parallel-series systems are established. Some practical examples are presented to elucidate some of the derived results.

• 한국과학교육학회지
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• 제17권3호
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• pp.301-311
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• 1997

The purpose of this study is to construct a structural equation model and to analyze causal relationships among variables related to attitudes to science using structural equation modeling(SEM) with LISREL VII. The sample consisted of 483 10th grade boys from a general high school in Pusan, Korea. The questionnaires (ABC-attitude scale: affection, behavioral intention, cognition scale of attitude towards science) were developed by the researcher through a pilot study. And other instruments have modified previous ones. Five instruments were used in this study: GALT(group assessment of logical thinking), MTSlS(modified test of science inquiry skill), ABC-attitude scale, MSAS(modified scientific attitude scale), CSAT(common science achievement test). Structural equation modeling with LISREL VII($J\ddot{o}reskog$ & $S\ddot{o}rbom,$ 1993) was employed to estimate the causal inferences about hypothesized relationships among observed data sets. Three competing models consisted of five latent variable(scientific thinking ability, science inquiry skill, attitude towards science, scientific attitude, science achievement) - lP(inquiry preceding) model, AP(attitude preceding) model and AM(attitude mediating) model - were developed. Among these competing models, IP model satisfied the observed data sets. The causal relationships among "attitudes to science" and other latent variables were reliably identified. According to the results of the present study, science inquiry skill was the most significant variable that can predict science achievement. But scientific thinking ability has not directly influenced science achievement. This study suggests that inquiry based teaching-learning processes should be offered to students for improvement of science achievement. At the same time, it seems to be important to develop positive attitude towards science. Understanding of relationships among variables related to attitudes to science will be helpful to the development of science curriculum and to the design of science teaching and learning process. LISREL has been recognized as a useful approach in testing a SEM. However, in this study, LISREL approach was estimated as much more useful method for research design.

• 한국산업정보학회논문지
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• 제11권5호
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• pp.67-77
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• 2006

인터넷의 급속한 확산으로 가상공간에서의 활동이 증가함에 따라 인터넷을 기반으로 한 다양한 온라인 서비스가 제공되고 있으며, 이의 평가에 대한 많은 연구들이 수행되어 왔다. 그 중에서도 특히 온라인 서비스의 품질에 대한 평가지표와 품질측정 방법 등에 대해 많은 선행연구가 이루어져 왔다. 그러나 지금까지의 연구는 인터넷 서비스, 인스턴트 메신저, 게임, 포털 사이트 등 상업용 사이트에 대한 연구가 주를 이루고 있으며, 최근 널리 확산되고 있는 1인 미디어인 Weblog(Blog)에 대한 연구는 충분히 이루어지지 못하고 있다. 본 연구에서는 Weblog 서비스의 품질과 이용자 만족도, 충성도 간의 구조적 관계에 대하여 분석하 고자 한다. 이를 위하여 기존의 문헌연구를 통하여 일반적인 서비스 품질요인들을 도출하고, 이를 Weblog의 특성에 맞게 재구성한 wb-SERVQUAL을 제시하였다. 제시된 wb-SERVQUAL을 이용하여 실증조사를 실시하였고, 사용자들의 Weblog 활동을 통하여 나타나는 Weblog 서비스 품질과 만족도, 충성도와의 관계를 분석하기 위하여 구조방정식 모형(SEM, Structural Equation Model)을 이용하였다. 이러한 실증연구 방법을 통하여 보다 효과적인 Weblog의 운영을 위한 실무적 함의를 제공하였다.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 1993년도 봄 학술발표회논문집
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• pp.79-85
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• 1993

An integrated structural design system can define and process complex design information that occurs in each of the design stages for flexible cooperation. It can also reduce human error on sequential design steps: preliminary design, analysis and detailed design. Therefore, it's very important to have consistent semantic expression and procedure for structural design information that has complex relationships. In this study, we introduce the object-oriented concepts and object-oriented database thechnique that provides high level semantic expression in order to develop an integrated structural design system.

• 대한인간공학회지
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• 제22권2호
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• pp.1-13
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• 2003

In general, causal relationship for theoretical concepts is hypothesized based on precedent studies and tested by a structural equation model. However, when theoretical backgrounds are scarce or absent, the causal relationship is hypothesized operatively by the purpose and scope of research and tested by overall goodness-of-fit indices such as GFI and RMR. Such a causal relationship can't be most appropriate statistically because it is selected as specific relationship from researcher's view among possible causal relationships. Therefore, this study is to propose a procedure for identifying the causal relationship that produces the best GFI among possible causal relationships for theoretical concepts.