军品用电动振动试验台测量结果不确定度评定

振动试验台测量结果是否准确可靠,直接关系到对军工产品的评价.结合军工产品环境振动试验工作实际,根据检定规程JJG190-1997《电动振动试验台》检定规程的要求,对使用中电动振动试验台测量结果不确定度进行评定,使电动振动试验台测量结果更加科学合理可靠.     

COVID-19 and individual performance in global virtual teams: The role of self-regulation and individual cultural value orientations

Since the onset of the COVID-19 pandemic, global virtual teams (GVTs) have become increasingly important. Drawing on conservation of resources theory and self-regulation theory, we examined the mechanism and process underlying individuals' performance in GVTs in this specific situation. We posit that the local severity of the pandemic has a negative effect on individuals' performance in GVTs and that self-regulation functions as a coping mechanism in times of pandemic-related ambient stress, reducing its negative effect on performance. We suggest that three cultural value orientations, that is, uncertainty avoidance, collectivism, and long-term orientation, explain different levels of self-regulation, which in turn moderates the relationship between the local severity of the pandemic and individual performance in GVTs. Based on a sample of 2727 individuals from 31 countries participating in an international business consulting project during the early stage of the unfolding pandemic, we show that (a) the local severity of the pandemic had a negative effect on individuals' performance, (b) the negative effect of the pandemic on performance is weaker for individuals with high self-regulation, and (c) uncertainty avoidance and long-term orientation are positively associated with self-regulation, which mediates the moderating relationship between the cultural value orientations and the relationship between the COVID-19 pandemic and individual performance in GVTs.