نتایج جستجو برای: periodic materials
تعداد نتایج: 516054 فیلتر نتایج به سال:
Background and purpose: The aim of this research was to compare the efficacy of relaxation, and relaxation combined by periodic visual stimulation and periodic audio stimulation on blood pressure and heart rate of university students. Materials and methods: This experimental study was conducted in 36 psychology students in Allameh Tabatabaee University. The students were randomly selected and...
In this work, an ordinary state-based peridynamic homogenization method is presented, in which periodic boundary condition enforced by coupling the displacement of point pairs. Effective material properties are obtained from gradient tensor. The governing equation peridynamics integro-differential form instead more common spatial differential form, grants it unique advantage performing analysis...
having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...
Cellular materials with periodic architectures have been extensively investigated over the past decade for their potential to provide multifunctional solutions for a variety of applications, including lightweight thermo-structural panels, blast resistant structures, and high-authority morphing components. Stiffer and stronger than stochastic foams, periodic cellular materials lend themselves we...
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