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带一致变化尾上负相关随机变量和的精确大偏差 被引量:5
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作者 汪世界 《合肥工业大学学报(自然科学版)》 CAS CSCD 北大核心 2010年第3期464-466,477,共4页
随机变量和尾概率性状的研究是保险精算领域的热门问题,而随机变量和的精确大偏差则精确刻画了其尾概率的极限性态。文章分别研究了一列同分布(但不一定独立)随机变量确定和以及随机和的精确大偏差,得到如下结果:如果这列随机变量带一... 随机变量和尾概率性状的研究是保险精算领域的热门问题,而随机变量和的精确大偏差则精确刻画了其尾概率的极限性态。文章分别研究了一列同分布(但不一定独立)随机变量确定和以及随机和的精确大偏差,得到如下结果:如果这列随机变量带一致变化尾,是上负相关的,并且在左直线无支撑,则它们确定和以及随机和的精确大偏差结果均成立。 展开更多
关键词 上负相关 一致变化尾 控制变化尾 长尾 精确大偏差
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The study on the Psychological motivation of Costs Stickiness --Empirical Evidence from China
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作者 Chang LIU Shuangquan Quan 《International Journal of Technology Management》 2013年第8期101-103,共3页
This paper studies Whether the managerial overconfidence have any impact on the Cost management (Characterized by the degree of the Costs Stickiness ) .Using the ample of the A-share listed companies between 2007-20... This paper studies Whether the managerial overconfidence have any impact on the Cost management (Characterized by the degree of the Costs Stickiness ) .Using the ample of the A-share listed companies between 2007-2011 in China, We document that SG&A cost stickiness decreases in the degree of overconfidence. The further studies show the negative relation is more significant in the state-owned listed companies,which proved our speculation that the manager will cut expenses avoiding significant decline in performance when the sales decline in the state-owned listed company. 展开更多
关键词 OVERCONFIDENCE costs stickiness
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