The overall entropy method is used to evaluate the development level of the logistics industry in the city based on a mechanism analysis of the spillover effect of the development of the logistics industry on economic growth, according to the panel data of 26 cities in the Yangtze River delta. On this basis, the paper uses the spatial durbin model to study the direct impact of the development o...

Sichuan has abundant tourist resources; the Government confirmed the tourism industry as the six pillar industries of the cross-century development in Sichuan. In recent years, the ratio of tourism to the province's GDP increased year by year. Based on stability test of the VAR model, this paper uses impulse response functions and variance decomposition method for econometric analysis, by using...

and an anonymous referee for helpful comments and to Steve Nafziger for research assistance. 1 " It is clear from the preceding that every " art " [technique] has its speculative and its practical side. Its speculation is the theoretical knowledge of the principles of the technique; its practice is but the habitual and instinctive application of these principles. It is difficult if not impossib...

Should human beings who have been granted basic rights be allowed to bargain them away? In some countries, most prominently in China, special export zones exist where workers are required to give up several of their rights in order to be employed. Are there serious objections to such renouncements? The first part of this paper discusses some of the pros and cons. In the second part, the results...

The absorption of nutrients depends to a large extent on the reaction of the substrate. At maximal growth the intake of salt is at minimum. Different ions are very differently affected. The intake of water is independent of the absorption of salts.