Comment: The nature of the ADAS model based on the ISLM model
评论了Rao关于Rowan需求曲线不存在的观点，指出其将系统视为联立方程问题必然得到标准总需求结果，而Rowan程序是使计划总需求取决于计划总供给的条件函数，产生向上倾斜的总需求曲线，并论证了该系统的稳定性及其对国民收入核算和计量估计的意义。
Rao suggests that the Rowan demand curve does not exist but that result is obtained through treating the system as a simultaneous equation problem that will inevitably obtain the standard aggregate demand (AD) result. The Rowan procedure is a conditional function that makes planned AD conditional on planned aggregate supply (AS)--a quintessential Keynesian process. This results in an AS-dependent AD curve that is upward sloping. This system can be shown to be stable, have a firm connection to measures of national income accounting without dependence on notions of equilibrium and implications for econometric estimations. Copyright The Author 2009. Published by Oxford University Press on behalf of the Cambridge Political Economy Society. All rights reserved., Oxford University Press.