Background: The prevalence of migraine headaches significantly increased in girls after menarche. This indicated that there is a closely relation between hormonal changes especially the estrogen level with migraine headaches. Objectives: The aim of this work was to determine the frequency of migraine and its associated factors in medical students affected with premenstrual syndrome (PMS). ...

Fifty years ago Warren and Root have introduced the shape factor. This fundamental parameter for modeling of naturally fractured reservoirs has been discussed stormily ever since. Different definitions for shape factor have been suggested which all of them are heuristically based. Recently, Heinemann and Mittermeir mathematically derived - based on the dual-continuum theorem assuming pseudo-ste...

Objectives: Parenting is a difficult task. Factors like social support, sense of coherence, self-esteem, hardiness, optimism, internal locus of control, and religious coping play a vital role in this area. This study aimed to develop a religious coping measure for parents of differently-abled children. It also aimed to explore the factor structure and reliability of a religious coping scale. M...

cementation factor is a critical parameter, which affects water saturation calculation. in carbonate rocks, due to the sensitivity of this parameter to pore type, water saturation estimation has associated with high inaccuracy. hence developing a reliable mathematical strategy to determine these properties accurately is of crucial importance. to this end, genetic algorithm pattern search is emp...

small and medium enterprises development policy by  cluster approach  program is a new method to attempt to industrial development goals in developed and developing country in the world. in the last decades in some of country such as iran concentrate that programmed. industrial development program by cluster approach need some measurable factor for control and assessment. program’s control must...

results the results show that the individual and demographic factor (idf), organizational factor (of), h & s training factor (tf), workplace-human factor (whf), factor related to type of accident occurrence (taf), h & s risk management system factor (rmsf), and accident time factor (atf) were considered to be effective and significant independent latent factors in occupational injuries. conclus...

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