Background and Objectives: One of the most important needs of life is sleep . Sleep deprivation and fatigue in the long-term leads to physical and psychological failure . In addition to health problems , work efficiency will also decrease . Due to the threats arising from poor sleep quality this study was performed to determine the sleep quality and its relation to fatigue severity between n...

in this thesis, first the notion of weak mutual associativity (w.m.a.) and the necessary and sufficient condition for a $(l,gamma)$-associated hypersemigroup $(h, ast)$ derived from some family of $lesssim$-preordered semigroups to be a hypergroup, are given. second, by proving the fact that the concrete categories, semihypergroups and hypergroups have not free objects we will introduce t...

هدف این پایان نامه تعیین تعداد مولدهای مینیمال ایده آلها در یک حلقه (جابجایی، یکدار، موضعی و نوتری) است، هر چند تعیین دقیق تعداد مولدها در حالتهایی خاص امکان پذیر است اما در حالتهای کلی روش های موجود بدست آوردن کرانهای مختلف برای تعداد مولدها است. مرجع اصلی این پایانامه ‏‎[1]‎‏ می باشد، به علاوه از نتایج جدیدی که در مرجع ‏‎‏‎[2]‎‏ نیز آمده استفاده کرده ایم. ‏‎[1]. j. sally. numbers of generator...

abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...

in this study, the relationship between teachers’ creative and critical thinking skills and their reflectivity in teaching was investigated. to this end, three questions were raised. these questions were intended to determine whether there was a significant relationship between teachers’ creative thinking skills and their reflectivity in teaching; whether there was a significant relationship be...

Background and Objectives: Suicide is one of the biggest medical and social problems in the world. The aim of this study was to investigate the geographical epidemiology of suicide (completed- attempted) in the townships covered by Mazandaran University of Medical Sciences during the years 2012 - 2016. Materials and Methods: In this ecological study, information was collected using the checkli...

  Background and Objectives: The ultimate goal of educational appraisal is to promote higher education quality. In this regard, internal evaluation is considered as a judgment about the quality and the strengths and weaknesses of the educational system. This study was carried out to assess the internal evaluation of nursing discipline in Rafsanjan University of Medical Sciences.   Materials and...