Background: Although various prescription drugs may be equally effective in promoting sleep, some may lead to substantial impairment in psychomotor functioning and an increased risk of motor vehicle accidents. Objective: To develop a general model to evaluate the potential effects of sleep...

This article focuses on agricultural productivity growth at both sector and state levels. It does so in a way that preserves the economic integrity of national and state production accounts. A model accounting for interstate transactions in farm goods links sectorwide and state-specific measures...

For US electric utilities realized rates of return were less than allowed rates from 1977-82 and less than the market cost of capital from 1979-82. Also, allowed rates were less than the cost of capital in 1980 and 1981. Estimates of the influence of ...