Often the questions we ask require us to make accurate predictions on how one factor affects an outcome. If a teacher is asked to work out how time spent writing an essay affects essay grades, it’s ...

A least-squares method for the numerical solution of a class of second-order mixed-type partial differential equations is analyzed. The method offers a unified computational treatment of both elliptic ...

In a multivariate regression model, the errors in different equations may be correlated. In this case the efficiency of the estimation may be improved by taking these cross-equation correlations into ...

Journal of Computational Mathematics, Vol. 33, No. 2 (March 2015), pp. 113-127 (15 pages) In this paper, a constrained distributed optimal control problem governed by a firstorder elliptic system is ...