the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

to teach english adequately, qualified teachers are needed. unfortunately, there are still teachers who are teaching english without an academic degree in tefl. it is necessary for teachers to have a major in english to have subject knowledge, but it is not sufficient. teachers need to have an understanding of the social, cultural, moral, ethical, and pedagogical issues of education and practic...

Background and purpose: Preterm birth is a stressful situation for parents and the infant, which may lead to difficulties in mother-infant relationships and disturb emotional and cognitive development in infants. The purpose of this study was to investigate the factorial structure, validity, and reliability of the Parenting Stress Scale for Mothers of Premature Infants. Materials and methods: ...

The aim of the present study was to validate the Pathological Narcissism Inventory (PNI) in a sample of Iranian university students. The PNI was developed using a rigorous translation/back-translation process. Participants consisted of 473 (195 female, 278 male) university students in Tehran, Iran including, University of Tehran, Tehran Medical University of Tehran, Allameh Tabata’ei University...

The purpose of this research was to explore the components of nurses’ ethical conduct in public hospitals in Mashhad. This study employed an eclectic method for research and followed a mixed exploratory design. A qualitative study was first performed, and then based on the results the quantitative method was applied. The statistical population consisted of all the nurses in public hospitals in ...

Objective: The aim of this study was to examine the casual relationship between family communication patterns and addition potential with the mediating role of neuroticism and openness to experience among male high school students in Ahvaz. Method:  In this descriptive-correlational study, all the male high school students in the academic year 2016-17 constituted the research population. From t...

Classroom evaluation is a key part of the teaching and learning process. The purpose of this study is to investigate the factor validity and reliability of the "Student Perceptions Questionnaire of Assessment and Evaluation of Activities" by Yuji. In this regard, the questionnaire of studentschr(chr('39')39chr('39')) perception of measuring and evaluating activities was performed on 400 student...