A very fast mesh simplification algorithm based on halfedge collapse is proposed in this work with a focus on progressive graphic transmission applications. We generalize the Quadric Error Metric (QEM) method to accommodate new topological operations. A flatness criterion is combined with the defined metric to preserve the visual quality of simplified meshes. We further adopt the vertex-based p...

A priority queue transforms an input permutation p1 of a totally ordered set of size n into an output permutation p2. Atkinson and Thiyagarajah showed that the number of such pairs (p1; p2) is (n+1)n 1, which is well known to be the number of labeled trees on n + 1 vertices. We give a new proof of this result by finding a bijection from such pairs of permutations to labeled trees.

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giving the highest priority to getting the national and local • population counts right maximising overall response and minimising differences in response • rates in specific areas and among particular population subgroups provision of high quality, value-for-money, fit-for purpose statistics • that meet user needs and which are as consistent, comparable and accessible across the UK as is possible

Hong Jiang began his talk by discussing the importance of data recovery. Disk failures have become more common in RAID-structured storage systems. The improvement in disk capacity has far outpaced improvements in disk bandwidth, lengthening the overall RAID recovery time. Also, disk drive reliability has improved slowly, resulting in a very high overall failure rate in a large-scale RAID storag...

Availability of reviews of the costs of patient safety Overall, a high level search of the literature for systematic reviews and overviews of the costs of patient safety revealed relatively few studies compared with the level of international interest in the topic. Most literature is concerned with individual case studies in specific healthcare settings or with priority healthcare concerns such...