Several strategies relying on kriging have recently been proposed for adaptively estimating contour lines and excursion sets of functions under severely limited evaluation budget. The recently released R package KrigInv33URL: http://cran.r-project.org/web/packages/KrigInv/index.html. is...

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In organizational ecology, the analysis of the impact of competition between populations on vital ratios is relatively underdeveloped. This paper addresses this issue by developing new competition measurements that focus on the importance of organizational size. The application of these...