无约束非单调自适应三次超估方法(英文)

为了求解无约束优化问题,给出了一种非单调三次超估方法,并证明了在适当条件下的全局收敛性和超线性收敛性.     

Experimental Study on Hard Turning Hardened GCr15 Steel with PCBN Tool

This paper discusses experimental results of turnin g experiments on GCr15 bearing steel hardened to 60～64 HRC. The objective was to d etermine the effect of the cutting parameters on cutting force, chip morphology and resultant workpiece surface quality, more specifically surface texture, micr ostructure alterations, changes in microhardness and residual stresses distribut ion. The changing rules of the main cutting force was shown in this paper which feature a increasing tendency with the improvement ...     

关于一个矩阵的秩的等式

结出矩阵的秩的等式rank(A8-E)=rink(A—E) rank(B—E)成立的四个充要条件。     

人力资本在国有企业流失问题研究

当前国有企业人才流失状况不但严重，而且高管人员流失正成为国企人才流失的新趋势。为此，分析了国有企业人才流失的原因，并建议从完善有效的人才激励机制和约束机制，合理肯定人力资本所产生的增量价值等方面来解决国企人才流失问题。