In order to find out the root cause of cross bearer welds’ cracks in general-purpose gondola cars, relationship between asymmetric structure and stress distribution is studied this paper. Firstly, concept asymmetry coefficient cluster proposed, coefficients’ calculation methods independent dependent variables are given, respectively, two-dimensional space. Secondly, according different position...

In this paper we compare ten correlation coefficients using a three-step bootstrap approach (TSB). A three-step bootstrap is applied to determine the optimal repetitions, B, to estimate the standard error of the statistic with certain degree of accuracy. The coefficients in question are Pearson product moment (r), Spearman’s rho (ρ), Kendall’s tau (τ) , Spearman’s Footrule (Ft), Symmetric Footr...

INTRODUCTION The aim of the present study was to evaluate how vertical facial height correlates with mandibular plane angle, facial width and depth from a three dimensional (3D) viewing angle. METHODS In this study 3D cephalometric landmarks were identified and measurements from 43 randomly selected cone beam computed tomography (CBCT) images of dry skulls from the Weisbach collection of Vien...

A neural network based coherent detector is proposed for detecting gaussian targets in gaussian clutter. Target and clutter ACF are supposed gaussian with different powers and one lag correlation coefficients. While clutter mean Doppler frequency is set to 1, the influence of target mean Doppler frequency is considered. The neural detector performance is compared to the Neyman-Pearson one. For ...

Methods Front and back digital photographs of patients with idiopathic scoliosis (Cobb>25o) were obtained. Shoulder, armpit and waist angles, in addition to trunk asymmetry indexes, were calculated on front and back photographs with Surgimap software. On AP radiographs Coronal Cobb angles and radiological shoulder imbalance using CRIA angle (Angle between horizontal line and a line drawn betwee...

the effect of test on teachers, students, and their classroom behaviors has ever been amenable to scholarly studies. to explore such an effect, 20 professors offering ma tefl preparation courses and 30 candidates received plsp and apals inventories. paired-sample t-tests revealed significant differences. however, the respective componential multivariate anova revealed non-significant and signif...

BACKGROUND Measuring range of movement is important in clinical shoulder assessment. Over the years, different techniques have been used to analyze upper limbs mobility. Smartphone image-based goniometer offers a noninvasive easy-to-use method of measuring arm abduction angle. However, the validity of this method has not been previously established. The purpose of this study was to investigate ...

INTRODUCTION We conducted an external validation study to examine the correlation of a previously published claims-based index for rheumatoid arthritis severity (CIRAS) with disease activity score in 28 joints calculated by using C-reactive protein (DAS28-CRP) and the multi-dimensional health assessment questionnaire (MD-HAQ) physical function score. METHODS Patients enrolled in the Brigham a...