摘要：飞行试验是在真实飞行条件下进行产品试验的过程。飞行试验内容复杂,试飞架次多,发生事故的可能性大,特别是执行高风险科目,如包线扩展、颤振、失速等。因此,在试飞飞机上必须有足够的安全保障措施,保证飞机出现不可控的情况下试飞机组人员的安全。

摘要：民用飞机金属结构机身一般是由隔框、长桁、蒙皮组成的半硬壳式结构,由于材料供应限制及工艺需要,机身长桁通常由几段连接而成,长桁接头数量繁多,是飞机结构的一种重要连接件。如何在工程设计中快速设计出满足使用要求的长桁接头?笔者在工程设计中使用等强度设计法。

摘要：Machine learning (ML) has been widely used todesign and develop new materials owing to its low computational cost and powerful predictive capabilities. In recentyears, the shortcomings of ML in materials science have gradually emerged, with a primary concern being the scarcity ofdata. It is challenging to build reliable and accurate ML modelsusing limited data. Moreover, the small sample size problemwill remain long-standing in materials science because of theslow accumulation of material data. Therefore, it is importantto review and categorize strategies for small-sample learningfor the development of ML in materials science. This reviewsystematically sorts the research progress of small-samplelearning strategies in materials science, including ensemblelearning, unsupervised learning, active learning, and transferlearning. The directions for future research are proposed, including few-shot learning, and virtual sample *** importantly, we emphasize the significance of embedding material domain knowledge into ML and elaborate on thebasic idea for implementing this strategy.

摘要：本文就医院绩效考核体系的构建原则、构建程序进行了阐述,并结合实例分析,为医院绩效考核体系的设计提供了思路。