Background: Visual disorders in old age is one of the most important factors in decreasing quality of life of older people. This study aimed to access the vision-related quality of life of older people in Tehran and to examine some of the underlying factors. Materials and Methods: This was a population-based cross-sectional study among 566 older people aged 60 years and over, living in Tehran....

abstract in a protocol analysis of second language writing from 20 adult english as a foreign language (efl) iranian students, this research observed how language-switching (l-s), i.e., first language use in l2 writing, was affected by l2 proficiency. switching interactively between first (l1) and second (l2) languages has been recognized as one of the salient characteristics of l2 writing....

abstract part one: the electrode oxidation potentials of a series of eighteen n-hydroxy compounds in aqueous solution were calculated based on a proper thermodynamic cycle. the dft method at the level of b3lyp-6-31g(d,p) was used to calculate the gas-phase free energy differences ,and the polarizable continuum model (pcm) was applied to describe the solvent and its interaction with n-hydroxy ...

‎in this article‎, ‎we have focused one some basic and productive information about the properties of spectrum and singular values related to compact operators which are ideals in a c*-algebra of bounded operators‎. ‎considering a two-sided connection between the family of symmetric gauge functions on sequence of singular values of compact operators and symmetric norms on finite dimensional ope...

Iran’s 20-year vision document has defined the roadmap of development toward an ideal society by 2025. Each five-year development plan within these years is duty-bound to partly meet the requirements of its goals. At the start of the Islamic Revolution’s fourth decade named as “Development and Justice”, the fifth five-year development plan has a crucial mission which is responsible for setting ...

according to coates’s (2004, as cited in zhang, 2010) definition of "conversational dominance" (p.111), it refers to the phenomenon of a speaker dominating others in interaction. specifically, it means how a speaker makes use of certain strategies to get the floor and maintain the floor. thus, the amount of talk is the main measurement for the dominance of the conversation. whether a speaker do...