in this work‎, ‎an iterative method based on a matrix form of lsqr algorithm is constructed for solving the linear operator equation $mathcal{a}(x)=b$‎ ‎and the minimum frobenius norm residual problem $||mathcal{a}(x)-b||_f$‎ ‎where $xin mathcal{s}:={xin textsf{r}^{ntimes n}~|~x=mathcal{g}(x)}$‎, ‎$mathcal{f}$ is the linear operator from $textsf{r}^{ntimes n}$ onto $textsf{r}^{rtimes s}$‎, ‎$ma...

in this paper, we present a new iterative method with order of convergence eighth for solving nonlinear equations. periteration this method requires three evaluations of the function and one evaluation of its first derivative. a general error analysis providing the eighth order of convergence is given. several numerical examples are given to illustrate the efficiency and performance of the new ...

conclusions we recommend interventional plans based gender aimed at improving adolescent health with regard substance abuse. objective for determining the prevalence of alcohol and other substance use as well as the factors associated with the experience of alcohol use in adolescents. patients and methods this is a population-based and cross-sectional study, which was conducted in august 2010 o...

objective: the world population will likely increase by 2.5 billion over the next 43 years, passing from the current 6.7 billion to 9.2 billion in 2050. only limited information about the contraceptive practices especially modern contraceptive use is available. the aim of this study is to determine the prevalence of contraceptive methods and factors associated with modern contraceptive in use m...

The zero-forcing (ZF) and minimum mean square error (MMSE) based detectors can approach optimal performance in the uplink of massive multiple-input multiple-output (MIMO) systems. However, they require inverting a matrix whose complexity is cubic relation to dimension. This lead high computational effort, especially MIMO To mitigate this, several iterative methods have been proposed literature....

we conducted this cross-sectional study to examine the relationships between problematic alcohol drinking, unhealthy habits and socio-demographic factors based on the fourth korean national health and nutrition examination survey (knhanes iv).we analyzed a total of 13,488 participants based on the data collected from the knhanes iv performed between 2007 and 2009.the frequency of binge and heav...