| 单词 | input-output |
| 释义 | input-output Study of the flows of goods and services between different sectors of the economy. An input-output table lists all flows of goods and services between sectors of origin and factor services, normally denoted by rows, and sectors of destination, including both intermediate and various types of final use, normally represented by columns. Input-output analysis then assumes that each activity has constant returns, and that the ratio of inputs to production for each sector is constant. On these assumptions it is possible to work out what gross outputs of all sectors are required for any set of final products, and what total factor inputs must be. These totals can then be compared with the available labour force and industrial capacity to see if such a programme is feasible. Input-output has sometimes been advocated as a part of a centralized economic planning mechanism. The results of its calculations can only be as reliable as its assumptions: constant returns, constant input proportions, and an economy that can be divided into a manageable number of sectors within each of which perfect aggregation is possible. |
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