The Centroid of Lie Superalgebras

Throughout the present paper,we mainly discuss properties of the centroid and the Killing from on the Lie Superalgebgra.KAC has giuen the concept of the centroid of the superalegbras.We give the definition of the centroid and zero-degree centroid of the Lie Superalgebras.We prove that the centroid of a simple Lie su-peralgebra is a superfield.Also we get a relation between the zero-degree centroid and the killing from of a simple Lie superalgebra.

高效的团队是怎样炼成的?——对团队动态过程的探索

本文梳理了现有的有关团队过程的研究,并以此为基础考察了中国团队运行中自然浮现出来的团队互动过程及其对团队绩效的影响。我们安排102个团队参加了一个模拟团队练习,测量了这些团队的互动过程和客观绩效(即完成练习的时间)。分析结果表明,团队参与、任务分工和行动整合是三种不同的团队互动过程,它们对团队绩效都有较好的预测作用。此外,结果还表明,在团队运行的整个时间段内,三种互动过程的出现是有先后顺序的,团队参与和任务分工主要发生在团队运行初期,行动整合则发生在它们之后,而且行动整合对绩效的影响更直接。