The uneven distribution of water resources in time and space restricts the development society, which is a universal problem facing world. To improve ability to regulate diversion projects alleviate contradiction between social development, China has decided build network (WNPs). A WNP an integrated supply system that includes multiple sources lines integrates functions supply, delivery, optima...

estimation of water demand in the different sectors, spatially in the urban areas is an important subject that it has considered by scientists and economic researchers’. water shortage and related challenges are most important problems of cities. this study was done according to stonegray function and consumer behavior in microeconomic theory. lineline, log line, loglog and some kinds of econom...

the concept of virtual water trade refers to transact of the water consumed for production of goods and agricultural products through international trade. the anthony allan introduced this concept to improve global water used efficiency. in this paper, the original theory of allen has been investigated through incorporating virtual water as a factor of production in heckscher-ohlin internationa...

The present study aims to estimate the marginal cost of potable water supply and analyse implications for more efficient, equitable income-adequate tap tariffs in Tunisia. Furthermore, this article develop a new pricing model water. Pricing by Tunisian utility focuses on setting prices cover average costs, often using designs that increase clogging rates. This results large volume being wasted....

the strategic pricing decisions of assembly products in assembly products supply chain are studied in this paper. firstly, a two-stage assembly products supply chain model is developed. by building nash game model, the nash equilibrium solution of pricing strategy of supplier and assemblers is obtained. next, a union decision model is built to analyze the optimal combination pricing strategy of...

The strategic pricing decisions of assembly products in assembly products supply chain are studied in this paper. Firstly, a two-stage assembly products supply chain model is developed. By building Nash game model, the Nash equilibrium solution of pricing strategy of supplier and assemblers is obtained. Next, a union decision model is built to analyze the optimal combination pricing strategy of...