Existing metrics for the learning performance of feed-forward neural networks do not provide a satisfactory basis for comparison because the choice of the training epoch limit can determine the results of the comparison. I propose new metrics which have the desirable property of being independent of the training epoch limit. The efficiency measures the yield of correct networks in proportion to...

The injury, repair and recovery after stroke have been extensively defined. The first epoch is related to acute injury and takes place in the first initial hours after stroke when changes in blood flow, edema, metabolism rate and diaschisis occurs. A second epoch is related to repair, which starts days after stroke and lasts for several weeks and is referred to as endogenous repair suggesting a...

Worlds in Transition is a large and ambitious study about contemporary and emerging global trends, set within the wide context of evolution on planet Earth. The central hypothesis of the book is that in the decades after the world wars, we have seen, and are seeing, the unfolding of a radical transition leading towards the emergence of a new stage in human civilization. This new stage is define...