the objective of this work is to analyze the effects of decrease in water subsidies (increase in the price of the water) on various economic sectors in order to promote the conservation of this resource based on the actual price of water. but over the past decades, various subsidizing methods hold the cost of water down. on the other hand, the indiscriminate use of these resources led the gover...

Despite evidence that consumers search across both stores (spatial) and time (temporal), the search literature models search in only one dimension. We develop a model of spatiotemporal search that nests a finite horizon model of spatial search within an infinite horizon model of intertemporal search. The model is estimated using an iterative procedure that formulates it as a mathematical progra...

providing of food products for increasing population, enhancing food security, increasing of production and foreign incomes are among the major program purposes of each country and monetary policies are one of the methods that immediately affected on food price and on major agriculture variables. time series analysis was used for studying the impacts of monetary policies effect on food price in...

We apply a spatial price equilibrium model of the world sugar market to simulate an abolishment of the EU quota system in 2015/16. To overcome the normative nature of the approach, we calibrate the model by attaching a non-linear cost term to each trade flow. This is in some regards similar to positive mathematical programming. We suggest an economic interpretation and an econometric specificat...

In this paper, we develop a perfectly competitive spatial equilibrium model in price and quantity variables in the presence of discriminatory ad valorem tariffs, a widely used trade policy instrument. We derive the equilibrium conditions and formulate them as a variational inequality problem. An algorithm is then proposed for the computation of the equilibrium pattern and convergence results es...

In this paper, we develop a dynamic network model of ecological food webs and prove that the set of stationary points of the projected dynamical system coincides with the set of solutions of a variational inequality governing the equilibrium of predatorprey networks. We also establish the equivalence between the ecological models and supply chain network equilibrium models and highlight the con...

The Dissertation at hand investigates the effects of different policy options on the world sugar market. A Spatial Price Equilibrium Model as suggested by Takayama and Judge is established. This model type has one considerable advantage over previously applied types which is its ability to combine the assumption of homogeneous goods regardless of origin (as opposed to Armington-based models) wi...