Input and output technical efficiencies of wheat production in Kerman, Iran

The Iranian government encourages farmers to produce wheat (a common agricultural enterprise) by increasing farm productivity and efficiency. In this paper, using a Cobb–Douglas frontier production function, a simple relationship between a farm‐level output‐based technical efficiency measure (the Timmer index) and an input‐based measure (the Kopp index) is first developed. Then, using 1995 data from 164 farms in Kerman province, Iran, the average Timmer and Kopp indexes were estimated at 0.93 and 0.91, respectively, and were found to be similarly affected by farm size (positively up to about 9 ha) and by input ratios, though with rather small explanatory power. Thus, there seems some but limited scope to increase the profitability of Iranian wheat production either by increasing the product, given input levels, or by decreasing inputs for the current level of wheat production. However, since wheat producers may be able to adapt their production process more easily and quickly by implementing new techniques, i.e. by more efficient combination of inputs, than by adopting new technology, correction of input over‐use can be regarded as a policy with speedy if limited effect in this case.     

1929：美国股市大崩盘

根据当时对时局的普遍看法，1929年秋天，美国经济彻底陷入了萧条。6月，工业与工厂生产指数双双达到最高点，然后开始一路下滑。10月，联邦储备工业生产指数由4个月前的126点下降到了117点。钢铁产量从6月份开始一路下滑；10月，铁路运输量减少；住宅建设这个易变的产业几年来持续低迷，而1929年仍继续下滑。     

Repetition and signalling: experimental evidence from games with efficient equilibria

We report experiments where subjects generally fail to attain the efficient equilibrium of a one-shot game, but attain the efficient equilibrium of the repeated version. The results suggest that in the repeated game actions are used to signal future intentions.     

Impact of the Northeast Interstate Dairy Compact on Consumer Prices for Fluid Milk

The objective of this paper is to analyze the impact of the Northeast Compact on retail fluid milk prices in New England. An econometric model was estimated to simulate the farm-to-retail price spread and to analyze the impact of the Northeast Compact on retail milk prices. The results found that retail milk prices rose 30.5 cents per gallon in Boston and 31.4 cents per gallon in Hartford over the Compact period compared with the pre-Compact period. About 70% of this increase was directly attributable to the Northeast Compact.