MEASURING THE DEVELOPMENT IMPACT OF A TRANSPORTATION SYSTEM: A SIMPLIFIED APPROACH*
提出多区域可变投入产出（MRVIO）模型，用于衡量交通系统的发展影响，并以1974-1978年阿肯色水运为例，评估其对区域工业产出、收入、就业和贸易流的影响。
ABSTRACT The Multiregional Variable Input‐Output (MRVIO) model is introduced to measure the development impact of a transportation system. The MRVIO model is a theoretically flexible, computationally simple, and cost‐responsive model. Under the MRVIO model, regional input‐output coefficients, trade coefficients, and trade flows become cost responsive and easy to compute. The MRVIO model is employed to measure the development impact of the Arkansas waterway during the period of 1974 to 1978. In the study, the U.S. economy is disaggregated into 3 regions and 35 industrial sectors. The MRVIO model estimates the economic conditions of these 3 regions with and without the waterway in terms of industrial output, income, employment, and trade flows.