A comparison and evaluation is made of recent proposals for multivariate matched sampling in observational studies, where the following three questions are answered: (1) Algorithms: In current ...

SANTA CLARA, Calif. – Nov. 9, 2009 – National Semiconductor Corp. (NYSE:NSM) today introduced WEBENCH® Visualizer, a powerful comparison and selection tool that enables engineers to rapidly select an ...

The Journal of the Operational Research Society, Vol. 65, No. 10 (OCTOBER 2014), pp. 1602-1610 (9 pages) Sudoku is a puzzle played of an n × n grid N, where n is the square of a positive integer m.