Economic theories show that the direction and magnitude of the fluctuations of economic variables depend on the type and magnitude of the shocks they are faced with. Various reasons are noted for fluctuations in demands for imports, including productivity shocks. Accordingly, this research was aimed at identifying the effects of Total Factor Productivity (TFP) shocks of the agricultural sector ...

the real business cycle theory was applied to investigate the hypothesis of cyclical agreeable treatment of real wages, for men and women work force, in the iranian agricultural sector for the period of 1971-2006. on the basis of this theory, the impacts of supply side shocks (productivity and oil income shocks), are anticipated on the fluctuations of the real wages. the dominant effect of supp...

ABSTRACT We use analytical calculations and time-dependent spherically symmetric simulations to study the properties of isothermal galactic winds driven by cosmic rays (CRs) streaming at Alfvén velocity. The produce flows permeated strong shocks; we identify a new linear instability sound waves that sources these shocks. shocks substantially modify wind dynamics, invalidating previous steady st...

Recently, cosmic rays (CRs) have emerged as a leading candidate for driving galactic winds. Small-scale processes can dramatically affect global wind properties. We run two-moment simulations of CR streaming to study how sound waves are driven unstable by phase-shifted forces and heating. verify linear theory growth rates. As the grow non-linear, they steepen into quasi-periodic series propagat...

Electrostatic behavior of a collisionless plasma in the foot region of high Mach number perpendicular shocks is investigated through the two-dimensional linear analysis and electrostatic particle-in-cell (PIC) simulation. The simulations are double periodic and taken as a proxy for the situation in the foot. The linear analysis for relatively cold unmagnetized plasmas with a reflected proton be...