■ Knowledge sharing is a precondition for engineering project design teams to achieve an efficient design; however, designers are not always willing to share knowledge with other team members. To improve knowledge sharing, this article investigates the effect of knowledge leadership on knowledge sharing in engineering project design teams by examining the role of social capital. Our results show a significant indirect effect of knowledge leadership on knowledge sharing through the mediating role of social capital. Therefore, effective knowledge sharing depends on knowledge leaders to develop a share vision, and promote a trustworthy and collaborative environment for designers.

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It is a key step to remove the massive speckle noise in electronic speckle pattern interferometry (ESPI) fringe patterns. In the spatial-domain filtering methods, oriented partial differential equations have been demonstrated to be a powerful tool. In the transform-domain filtering methods, the shearlet transform is a state-of-the-art method. In this paper, we propose a filtering method for ESPI fringe patterns denoising, which is a combination of second-order oriented partial differential equation (SOOPDE) and the shearlet transform, named SOOPDE-Shearlet. Here, the shearlet transform is introduced into the ESPI fringe patterns denoising for the first time. This combination takes advantage of the fact that the spatial-domain filtering method SOOPDE and the transform-domain filtering method shearlet transform benefit from each other. We test the proposed SOOPDE-Shearlet on five experimentally obtained ESPI fringe patterns with poor quality and compare our method with SOOPDE, shearlet transform, windowed Fourier filtering (WFF), and coherence-enhancing diffusion (CEDPDE). Among them, WFF and CEDPDE are the state-of-the-art methods for ESPI fringe patterns denoising in transform domain and spatial domain, respectively. The experimental results have demonstrated the good performance of the proposed SOOPDE-Shearlet.

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Employee wellbeing is a crucial determinant in overall organizational performance. However, in the construction Industry, it is damaged by hazardous and stressful work environment. This study aims to explore how ethical leadership influences and thus could enhance employee wellbeing through perceived organizational support (POS). We proposed several hypotheses and developed the research framework accordingly. To test the hypotheses, an elaborately designed survey was used to collect quantitative data from 194 employees in the construction companies in China. Our results show that ethical leadership is positively related to the employee wellbeing. This study further reveals a remarkable indirect effect of ethical leadership on employee wellbeing via the mediating POS. Consequently, our findings suggest that, to enhance employee wellbeing, ethical leaders can develop a relaxing ethical environment and provide sufficient organizational support to the employees.

Knowledge collaboration is beneficial for project parties to assess valuable knowledge resources from others in order to enhance their competitive advantages. However, knowledge collaboration is hampered by the special project environment and temporary structure of construction projects. Based on relational contract theory, this study employs trust and relational norms as the two relational governance mechanisms for improving knowledge collaboration. Next, this study explores the effect of relational governance mechanisms on knowledge collaboration and the moderating role of the building information modelling (BIM) application level. We collected data from 166 responses in construction projects. Our results reveal that relational norms significantly impact knowledge collaboration, which is contrary to the effect of trust. Furthermore, the BIM application level has an interactive effect with relational norms, which improves knowledge collaboration. These findings reveal that the level of BIM application significantly affects the effectiveness of relational governance mechanisms. This study suggests that project managers should help project parties to develop BIM responsibilities in order to facilitate collaborative performance.