Similarly, c = P 1 contains the column margins, or column masses, with elements cj > 0. CA is defined in terms of the generalized singular value decomposition (GSVD) of P − rc with respect to the inner products normed by D−r 1 and D−c 1, where Dr = diag(r) and Dc = ...
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df=pd.DataFrame(CVP(unit_price,unit_variable_costs,volumn,fixed_costs),columns=['实际数'],index=['单价','单位变动成本','单位边际贡献','销售量','销售额','变动成本','边际贡献','固定成本','营业利润']) 6 df NameError: name 'pd' is not defined 在网上找了好久,都没有找到解决的办法,...
1, 2 While many effective antitumor immune mechanisms have been described, it is not entirely clear whether antitumor immune responses operate in immune surveillance, at least as this concept was defined originally. For example, patients who are immune-deficient, such as people who have AIDS, do...
It is not unusual for a previous episode of depression or mania in the patient or a close relative not to have been recognized. More than any other medical condition, pregnancy requires constant attention to the patient's emotional and physical well-being. Despite today's sophisticated ...