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...

 Background: Of common alternative treatments for early symptoms of early menopause are phytoestrogens. Phytoestrogenic compounds naturally occur in hop, though there is no study investigating the hop effect on the early symptoms of menopause. This study aims to evaluate the effect of hop (Humulus lupulus L.) in treating early menopausal symptoms and hot flashes (primary outcomes). Metho...

since esp received universal attention to smooth the path for academic studies and productions, a great deal of research and studies have been directed towards this area. swales’ (1990) model of ra introduction move analysis has served a pioneering role of guiding many relevant studies and has proven to be productive in terms of helpful guidelines that are the outcome of voluminous productions ...

Background and Aim: Today, human resources are the most valuable asset of the organization.The entry of psychology into the management leap led to the use of various theories of psychology and citation and the creation of human relationships to explain the personality and behavior of the individual in the organization, and concepts such as motivation and organizational behavior were emphasized....

Background: Knowing the variables affecting health is clinically important. The purpose of this study was to determine the mediating role of coping styles in relation between attachment styles and early maladaptive schemas and health dimensions. Materials and methods: In a descriptive study, 500 students from Azad University of Medical Sciences of Tehran between 2017 and 2018 were selected by a...

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