The dependence of the actual/effective ionic concentration on nominal salt is experimentally investigated for aqueous solutions NaCl and KCl. actual bulk density determined by means impedance spectroscopy technique using two approaches data analysis: A first approach scrutinizing real part's plateau cell's electric spectrum versus dopant when written in series representation. second one via ext...

The Liu estimator has consistently been demonstrated to be an attractive shrinkage method for reducing the effects of multicollinearity. The Poisson regression model is a well-known model in applications when the response variable consists of count data. However, it is known that multicollinearity negatively affects the variance of the maximum likelihood estimator (MLE) of the Poisson regressio...

In this paper, inspired by the seminal work Caffarelli, Kohn, and Nirenberg [Comm. Pure Appl. Math., 35 (1982), pp. 771--831] on incompressible Navier--Stokes equation, we establish exis...