background: this study aimed to assess the relationship between meal frequency with mental distress and violent behavior among a nationally representative sample of iranian children and adolescents. materials and methods: the participants of this national study were 14,880 iranian students with 6 to 18 years of age. they were selected from urban and rural regions of iran by multi-stage cluster ...

in this work, the time series modeling was used to predict the tazareh coal mine risks. for this purpose, initially, a monthly analysis of the risk constituents including frequency index and incidence severity index was performed. next, a monthly time series diagram related to each one of these indices was for a nine year period of time from 2005 to 2013. after extrusion of the trend, seasonali...

this paper reports results from a corpus-based study that explored the frequency of words in the abstracts of applied linguistics journal articles. the abstracts of major articles in leading applied linguists journals, published since 2005 up to november 2001 were analyzed using software modules from the compleat lexical tutor. the output includes a list of the most frequent content words, list...

This paper presents a method for increasing the operating frequency range of sub-6 GHz transmitter to millimetre wave (mm-wave) using two cascaded doublers. The usage such up-conversion approach is constrained since applying first doubler’s generated harmonics second doubler mm-wave signal creation, results in severe distortions and bandwidth expansion transmitted signal, limiting use method. W...