منابع مشابه
The topological ordering of covering nodes
The topological ordering algorithm sorts nodes of a directed graph such that the order of the tail of each arc is lower than the order of its head. In this paper, we introduce the notion of covering between nodes of a directed graph. Then, we apply the topological orderingalgorithm on graphs containing the covering nodes. We show that there exists a cut set withforward arcs in these...
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Many species use coarse woody debris (CWD) and are disadvantaged by the forestry-induced loss of this resource. A neglected process affecting CWD is the covering of the surfaces of downed logs caused by sinking into the ground (increasing soil contact, mostly covering the underside of the log), and dense overgrowth by ground vegetation. Such cover is likely to profoundly influence the quality a...
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For every fixed graph H, we determine the H-covering number of Kn, for all n > n0(H). We prove that if h is the number of edges of H, and gcd(H) = d is the greatest common divisor of the degrees of H, then there exists n0 = n0(H), such that for all n > n0, C(H,Kn) = d dn 2h dn− 1 d ee, unless d is even, n = 1 mod d and n(n− 1)/d+ 1 = 0 mod (2h/d), in which case C(H,Kn) = d ( n 2 ) h e+ 1. Our m...
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To the Editor: In a recent issue of Critical Care Medicine, with interest we read the article by Dhanani et al (1), concerning vital signs after circulatory arrest following withdrawal of lifesustaining therapy. The article has timely given the persistent controversy regarding criteria of death in circulatory death organ donors. How many minutes after circulatory arrest can we consider the pati...
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Research papers usually contain a significant number of links to other resources. For the most part, they reference other printed research papers, but there are also a non-trivial number of links to resources on the World Wide Web. Unlike printed research papers, references to WWW resources may become invalid after time. The server containing the page may be taken offline, be temporarily unavai...
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ژورنال
عنوان ژورنال: Journalism Studies
سال: 2013
ISSN: 1461-670X,1469-9699
DOI: 10.1080/1461670x.2013.783295