VANJA NIKOLIĆ, BARBARA WOHLMUTH, A PRIORI ERROR ESTIMATES FOR THE FINITE ELEMENT APPROXIMATION OF WESTERVELT'S QUASI-LINEAR ACOUSTIC WAVE EQUATION, SIAM Journal on Numerical Analysis, Vol. 57, No. 4 ...

Best linear unbiased estimators of the fixed and random effects of mixed linear models are available when the true values of the variance ratios are known. If the true values are replaced by estimated ...