abstract: in the paper of black and scholes (1973) a closed form solution for the price of a european option is derived . as extension to the black and scholes model with constant volatility, option pricing model with time varying volatility have been suggested within the frame work of generalized autoregressive conditional heteroskedasticity (garch) . these processes can explain a number of em...

Introduction Nurses' behaviors and behaviors and decisions in the field of their activities, like other government employees, are emerging in the functioning of the state. These acts and behaviors are governed by the principles that are known as the principles governing administration. These principles, which include must and do not, are the behavior and services of the nurses Under the rule o...

Objective: Disable people need special legal attention. In this regard, special rules have been gradually developed by domestic and international law. Convention for the Protection of the Disabled Disability (2006) in the international community and the Iranian Act of comprehensive protection of the disable people (1383) in a national community are examples of above mentioned legal develop...