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"手压橡皮泥时,橡皮泥对手的力是弹力吗?"这个问题困扰了笔者很久,有两种截然不同的观点,理由都很充分.正方观点:橡皮泥对手的力是弹力.原因有3个,(1)手压桌子,桌子对手的力是弹力,而手压橡皮泥和手压桌子类似,因此橡皮泥对手的力也应当是弹力.(2)手对橡皮泥的力是弹力,根据作用力和 相似文献
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1. IntroductionLet X and Y be p x 1 and q x 1 random vectors, respectively, and let p 5 q. PutCanonica1 correlation analysis focuses on the relationship between the two sets of randomvariables, X.. 1 and Yax 1' We ca1l EFllZl,Zdz Z2l the canonical correlation matrix (CCM).Let pf,',p; (l > Pf 2.' 2 p; 2 0) be the eigenvalues of CCM. Their positive squareroots pl )', pp are the population canonical correlation coefficients. Letbe the sample covaxiance matrix, where U'1,' 5 Wi. ar… 相似文献
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