The authors analyze the management mode of production logistics in small and medium enterprises (SMES) with short production cycle to design the proper information system of production logistics and enhance the management performance of these enterprises production logistics.

An econometric estimation and selection on the production function in an environmental CGE model;

Main natures and mathematical proof of VES production function;

Quantitative analysis of production function of railway transportation in Shanxi;

This paper introduces the method that linear productive function estimates technical advance, and applies this method to calculate that technical advance and occupies portion in economic effective increase of water conservancy of xinjiang,which provides decision basis for development of hydraulic technical cause.

The model of Cobb-Douglas productive function,which is used to evaluate evealuated technical level,was established on the basis of a group of hypothesises.

This article adopts the method of C D productive function to analyze the growth of agricultual economy along the watershed reach of Nihegou Gully and comes to the conclusion of taking the strategy of flourishing agriculture by science and technology, transforming the pattern of economy growth actively and choosing the way of ecological agriculture.