We present the design of a mesh quality indicator that can predict behavior Virtual Element Method (VEM) on given family or finite sequence polyhedral meshes (dataset). The is designed to measure violation regularity assumptions are normally considered in convergence analysis. investigate this new mathematical tool lowest-order conforming approximation three-dimensional Poisson equation. This w...

Considering the importance of dietary constraints for the widely held view of carotenoid pigmentation as an honest quality indicator, there is surprisingly little data on carotenoid availability in different natural diets or along environmental gradients. Here we investigate the carotenoid availability in the main diet of breeding great tits Parus major , living in urban and rural environments ...