منابع مشابه
4-PLACEMENT OF ROOTED TREES
A tree T of order n is called k-placement if there are k edge-disjoint copies of T into K_{n}. In this paper we prove some results about 4-placement of rooted trees.
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We consider the one-variable characteristic polynomial p(G; ) in two settings. When G is a rooted digraph, we show that this polynomial essentially counts the number of sinks in G. When G is a rooted graph, we give combinatorial interpretations of several coe/cients and the degree of p(G; ). In particular, |p(G; 0)| is the number of acyclic orientations of G, while the degree of p(G; ) gives th...
متن کاملOn the greedoid polynomial for rooted graphs and rooted digraphs
We examine some properties of the 2-variable greedoid polynomial f(G;t, z) when G is the branching greedoid associated to a rooted graph or a rooted directed graph. For rooted digraphs, we show a factoring property of f (G;t ,z) determines whether or not the rooted digraph has a directed cycle.
متن کاملPsychological well-being in individuals with mild cognitive impairment
OBJECTIVES Cognitive impairments associated with aging and dementia are major sources of burden, deterioration in life quality, and reduced psychological well-being (PWB). Preventative measures to both reduce incident disease and improve PWB in those afflicted are increasingly targeting individuals with mild cognitive impairment (MCI) at early disease stage. However, there is very limited infor...
متن کاملThe Well-Being of Siblings of Individuals with Autism
Objective. The purpose of this review of the literature was to summarise studies regarding the psychosocial impact of growing up with a sibling with autism and to identify gaps in the related literature. Methods. Electronic databases were reviewed in order to critically appraise the 14 articles relevant to the topic. The search included a combination of the following key words: autism∗, quality...
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ژورنال
عنوان ژورنال: Ecological Restoration
سال: 2009
ISSN: 1522-4740,1543-4079
DOI: 10.3368/er.27.4.371