In this paper, semi-analytical method for asymmetrical eccentrically stiffened FGM cylindrical shells under external pressure and surrounded by a linear and non-linear elastic foundation is presented. The proposed linear model is based on two parameter elastic foundation Winkler and Pasternak. According to the von Karman nonlinear equations and the classical plate theory of shells, strain-displ...

Purpose: The aim of this study is to design a model of media literacy education in high school. Methodology: Since this research seeks to design a model or theory derived from the heart of data, so the data theorizing method of the foundation was chosen. To achieve this goal, with the opinion of the specialized council of the Book of Thought and Media Literacy, a practical case study was consi...

background: clinical learning is one of the important issues that helps the perception of nursing students’ practice in a clinical setting and its effect on their professional development. the aim of this study is to describe and state the manner of clinical learning in nursing students. materials and methods: this qualitative study was conducted as a grounded theory. the individual semi-struct...

In this paper, natural frequencies and dynamic response of thick beams made of saturated porous materials resting on viscoelastic foundation are investigated for the first time. The beam is modeled using higher-order beam theory. Kelvin-voight model is used to model the viscoelastic foundation. Distribution of porosity along the thickness is considered in two different patterns, which are symme...

In this article, the effect of size-dependent on the buckling and vibration analysis of functionally graded (FG) double-layer boron nitride plate based on classical plate theory (CPT) under electro-thermo-mechanical loadings which is surrounded by elastic foundation is examined. This subject is developed using modified couple stress theory. Using Hamilton's principle, the governing equations of...