Many problems require the selection of a subset variables from full set optimization variables. The computational complexity an exhaustive search over all possible subsets is, however, prohibitively expensive, necessitating more efficient but potentially suboptimal strategies. We focus on sparse variable for generalized Rayleigh quotient and eigenvalue problems. Such often arise in signal proce...

BACKGROUND In meta-regression, as the number of trials in the analyses decreases, the risk of false positives or false negatives increases. This is partly due to the assumption of normality that may not hold in small samples. Creation of a distribution from the observed trials using permutation methods to calculate P values may allow for less spurious findings. Permutation has not been empirica...

Dumpers or dump trucks are used all over the world to move overburden from many opencast mines. Diesel engines main driving force behind trucks. The frequency of damage due failure diesel is enormous. Therefore, efforts necessary analyze reduce downtime periods. A detailed analysis engine at subsystem level needs be done. Reliability and maintenance planning remain norm in this regard. obstacle...

INTRODUCTION Renal cancer is a complex and multifactorial oncourologic disease. OBJECTIVE To conduct a meta-analysis in order to investigate the association of GSTM1 and GSTT1 genes null polymorphisms in renal cancer. METHOD Case-control studies in humans, published from 1999 to 2013, that investigated the association of GSTM1 and GSTT1 genes null polymorphisms in renal cancer were grouped ...