introduction: playa is one of the most important landscapes in arid regions which covers about 1% of the world's total land area. study of playas is important from different points of view especially pedology, sedimentology, mineralogy, environmental geology, groundwater and surface water chemistry. more than 60 playas have been identified in iran. considering the fact that playas and surroundi...

We prove the existence of monetary equilibrium in a finite horizon economy with production. We also show that if agents expect the monetary authority to significantly decrease the supply of bank money available for short term loans in the future, then the economy will fall into a liquidity trap today.

Using the long wave perturbation scheme(gradient expansion), the effect of inhomogeneity on the inflationary phase is investigated. We solved the perturbation equation of which source term comes from inhomogeneity of a scalar field and a seed metric. The result indicates that sub-horizon scale inhomogeneity strongly affects the onset of inflation.

The multi-site capacity planning problem with a long term time horizon, with transportation constraints is expanded to consider pricing of the product, the effect of advertisement and competition. We use a modification of the Cobb-Douglas model for consumer utility and include the effect of advertising.

• The challenges of decreasing mortality among Tajik children are beyond the control of just the Ministry of Health (MoH) and health sector. In its stewardship role, the MoH must collaborate with other nonhealth sector stakeholders—like the food and agriculture, water and sanitation sectors -to use their combined and coordinated efforts in focusing on common objectives over the medium to long-t...

We prove the existence of monetary equilibrium in a finite horizon economy with production. We also show that if agents expect the monetary authority to significantly decrease the supply of bank money available for short-term loans in the future, then the economy will fall into a liquidity trap today.

This paper introduces a dynamic change of measure approach for computing analytical solutions expected future prices (and therefore, returns) contingent claims over finite horizon. The new constructs hybrid probability measures called equivalent expectation (EEMs) that provide the physical claim's price before horizon date, and serve as pricing on or after date. EEM theory can be used empirical...

Model predictive control (MPC) is a popular control method that has proved effective for robotics, among other fields. MPC performs re-planning at every time step. Replanning is done with a limited horizon per computational and real-time constraints and often also for robustness to potential model errors. However, the limited horizon leads to suboptimal performance. In this work, we consider th...