This article explores the homogeneity of coefficients in high-dimensional regression, which extends the sparsity concept and is more general and suitable for many applications. Homogeneity arises when regression coefficients corresponding to neighboring geographical regions or a similar cluster of covariates are expected to be approximately the same. Sparsity corresponds to a special case of ho...

background chronic sacroiliac (si) joint pain constitutes 16% to 30% of the total prevalence of chronic low back pain, which is commonly unilateral. apart from conservative management, various interventional pain management procedures have been reported. intraarticular deposteroid injection has been described as the most evidence-based, but different various radio frequency (rf) procedures have...

Steel corrosion of bars in concrete structures is a complex process which leads to the reduction of the cross-section bars and decreasing the resistance of the concrete and steel materials. In this study, reliability analysis of a reinforced concrete beam with corrosion defects under the distributed load was investigated using the enhanced Hasofer-Lind and Rackwitz-Fiessler (EHL-RF) method base...

INTRODUCTION: The benefits of performing prostate spectroscopy at 7T include increased spectral and spatial resolution. The potential exists to be able to better quantify individual metabolites, localize smaller volumes of disease and better monitor disease progression or treatment response. However, spectroscopy in the body at 7T faces many challenges including the well described destructive i...

Introduction The efficiency of automation with large numbers of individual samples and the quality of the acquired spectra depend heavily on the efficiency and quality of adjustments made to the B0 field homogeneity (shimming) after each sample change. The adjustments required depend mainly on sample properties such as bulk magnetic susceptibility of the solvent, volume, and position within the...

Background: Induction of cellular response after exposure to electromagnetic fields is limited to coherent fields. An incoherent noise field is supposed to suppress the bioeffects of regular RF electromagnetic fields. The purpose of this study was to investigate the effect of GSM mobile phone-induced radiofrequency (RF) on the induction of oxidative stress in SP2/0 cell line. Materials and Meth...