The aim of this work is to perform a detailed analysis the cracks paths obtained in fretting fatigue tests with cylindrical contact but taking into account presence an unavoidable (due device’s stiffness) small oscillatory rolling. In order obtain crack surfaces were measured confocal microscope after tests. Besides, area and surface initiation location by means optical microscope. measurements...

This article aims to reduce huge pilot overhead when estimating the reconfigurable intelligent surface (RIS) relayed wireless channel. Motivated by compelling grasp of deep learning in tackling nonlinear mapping problems, proposed approach only activates a part RIS elements and utilizes corresponding cascaded channel estimate predict another part. Through synthetic neural network (DNN), direct ...

the composition of the essential oils of teucrium chamaedrys l. belongs to the family lamiaceae, it is growing wild in the margin of mountainous roads of arid and cold climate of north iran. in this research, essential oils of t. chamaedrys, extracted and measured at the different location by different methods of distillationand then were analyzed by gc and gc/ms. investigation and comparison o...

In this paper, we improve an existing scheme of detecting the copy-move forgery. The main difference between our method and prior arts is that we seek spatial correlation in the test image. Our method has 4 stages. In the first stage, we segment test image. In second stage, we find the suspicious pairs and group them into suspicious groups by their spatial correlation, and then find a transform...

INTRODUCTION Postural deformities are commonly acquired disorders that occur throughout the life. The purpose of this research was to determine and compare the frequency of scoliosis disorder and anthropometric characteristics of normal versus the disordered Students. MATERIALS AND METHODS This was a cross-sectional study that was performed on 1416 girls and boys of elementary school students...