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Investigation of the hydro-mechanical behaviour of fouled ballast   总被引:1,自引:0,他引:1  
In this study, a fouled ballast taken from the site of Sénissiat, France, was investigated. For the hydraulic behaviour, a large-scale cell was developed allowing drainage and evaporation tests to be carried out with monitoring of both suction and volumetric water content at various positions of the sample. It was observed that the hydraulic conductivity of fouled ballast is decreasing with suction increase, as for common unsaturated soils. The effect of fines content was found to be negligible. For the mechanical behaviour, both monotonic and cyclic triaxial tests were carried out using a large-scale triaxial cell. Various water contents were considered. The results were interpreted in terms of shear strength and permanent axial strain. It appeared that the water content is an important factor to be accounted for since any increase of water content or degree of saturation significantly decreases the shear strength and increases the permanent strain. Constitutive modelling has been attempted based on the experimental results. The model in its current state is capable of describing the effects of stress level, cycle number and water content.  相似文献   
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Given the growing importance of online social media platforms (OSM) in brand management, the authors attempt to extend the relationship between e-brand equity and repurchase intention with two mediator variables, namely visual appeal and e-preference in which willingness to pay a price premium (WPPP) serves as a moderator. Drawing on the perspective of digitalized engagement (PDE), the authors confirm the mediating effects on the e-brand equity-repurchase intention link while evidencing both positive and negative effects of WPPP on the linkage of e-brand equity and mediators. Contributions to theory, practice, and future studies are also provided.  相似文献   
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The purpose of this theoretically-based study was to examine the effects of yellow-highlighting ‘relevant’ words and units within math word problems. Initial differences were documented between 10 girls at-risk for ADHD and 10 comparisons on the performance of group and individual assessments of math computations and word problems, as had previously been reported for boys. To address these deficits (faster speed and lower accuracy) for the at-risk group, these fourth-grade girls were randomly assigned word problems under two experimental conditions (highlight vs. nohighlight) within a counterbalanced condition- and form-order design. Intervention gains were (a) slower rate of performance, (b) decreased off-task behavior, and (c) improved problem solving performance, differentially for girls at-risk for ADHD when their materials were first presented with highlighting – the effects of which carried over to a non-highlight condition. The theoretical, practical, and future research implications of this study are addressed.  相似文献   
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This inquiry into consumer goods companies in Vietnam aims to discern whether such constructs as corporate governance, market orientation, and knowledge sharing can act as antecedents for the balancedness between financial and non-financial performance metrics in the performance measurement system. Structural equation modelling was utilized to dissect 304 responses returned from self-administered structured questionnaires despatched to 1,131 middle-level managers. From the findings surfaced the interplay between market orientation and knowledge sharing. Corporate governance, on the other hand, tends to flourish market orientation and knowledge sharing, which in turn encouragingly influence performance measurement balancedness. The findings also paved the way from strong corporate governance to a high degree of balancedness in performance measurement system. Through the findings of the research, the insight into the interplay pattern of performance measurement balancedness and its antecedents underscores the magnitude of the corporate governance mechanism as well as market-oriented culture and/or intelligence dissemination culture in the implementation of the balanced performance measurement system in consumer goods companies in the Vietnam business setting.  相似文献   
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This survey study examines the applicability of role congruity theory on journalists in Vietnam. Findings show that journalists hold stereotypical perceptions of female leaders. Journalists see female leaders as more communal while male leaders as more agentic. Journalists believe it is more important to report information on female leaders’ domesticity and physicality than it is on male leaders. In addition, journalists from families with a traditional division of labor tend to hold stronger gender stereotypes. Theoretical and practical implications are discussed.  相似文献   
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