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二、新MAPI法 旧MAPI法是以防卫者的现有设备和挑战者的新设备之间的较量作为基础的。它通过计算挑战者新设备的未来费用来判断现在是否应该进行这种更新。该方法仅局限于同防卫者的旧设备相比较,来判断更新与否。同时旧MAPI法为了计算上的方便,又作了上面所述的两种假定。因此,这种方法的应用,必然受到一定的限制。为此,特包尔又提出了新MAPI法。 新MAPI法不仅克服了旧MAPI法的某些缺陷,而且它在应用范围上也远比旧MAPI法为广。例如它还可应用于各种不同投资方案的对比,并能给出各种方案的优先顺序,以供
Second, new MAPI law The old MAPI law is based on the contest between the defender’s existing equipment and the challenger’s new equipment. It determines whether this update should be made now by calculating the future cost of the challenger’s new equipment. This method is limited to comparing with defenders’ old equipment to judge whether it is updated or not. At the same time, the old MAPI method makes the above two assumptions for the convenience of calculation. Therefore, the application of this method is bound to be subject to certain restrictions. To this end, Tebour proposed a new MAPI method. The new MAPI method not only overcomes some of the deficiencies of the old MAPI method, but it is also far more widely used than the old MAPI method. For example, it can also be applied to the comparison of various investment plans and give priority to various plans for