Results 31 to 40 of about 107,594 (348)
Journal of Graph Theory, 1986 AbstractA nontrivial connected graph G is called even if for each vertex v of G there is a unique vertex v such that d(v, v) = diam G. Special classes of even graphs are defined and compared to each other. In particular, an even graph G is called symmetric if d(u, v) + d(u, v) = diam G for all u, v ∈ V(G).
Gobel, F., Veldman, H.J.
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The geometric mean of relative abundance indices : a biodiversity measure with a difference [PDF]
, 2011 This work is partly supported by the European Research CouncilThe 2010 Biodiversity Target of the Convention on Biological Diversity (CBD), set in 2002, which stated that there should be ‘a significant reduction of the current rate of biodiversity loss ...
Anne E. Magurran +14 more
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Ecology and Evolution, 2023 Environmental heterogeneity is an important driver of ecological communities. Here, we assessed the effects of local and landscape spatial environmental heterogeneity on ant community structure in temperate seminatural upland grasslands of Central ...
Antonio J. Pérez‐Sánchez +4 more
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On parametric evenness measures
, 2003 The degree to which abundances are divided equitably among community species or evenness is a basic property of any biological community. Several evenness indices have thus far been proposed in ecological literature.
RICOTTA, Carlo
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Diversity of Butterflies (Lepidoptera: Papilionoidea and Hesperioidea) of the South-Eastern Corner of Tsaghkunyats Mountain Ridge, Republic of Armenia [PDF]
نامه انجمن حشرهشناسی ایرانA study was conducted in the surroundings of Karenis village (South-Eastern corner of Tsaghkunyats Mountain Ridge) to document the composition of Papilionoidea and Hesperioidea species in the area.
Lilit Sargsyan, Noushig Zarikian
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, 2007 1. Floodplain environments are increasingly subject to enhancement and restoration, with the purpose of increasing their biodiversity and returning them to a more 'natural' state.
Brown, A.G., Davis, S.R., Dinnin, M.H.
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Environmental Seasonality Regulates Community Evenness in Neotropical Bat Communities
, 2022 Copyright © 2022 Estrada-Villegas, Pérez-Torres, McGill and Stevens. cc-byEvenness is a key community property that provides insights into resource acquisition and ecosystem functioning.
Stevens, Richard D. +3 more
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Diversity, 2022 In many tropical areas of high conservation concern there is still no evidence on the effectiveness of protected areas in protecting specific components of biodiversity.
Gift Simon Demaya +4 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen +23 more
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Dynamical symmetries in even-even Te nuclides
Physical Review C, 1987 The structure of the even-even Te nuclides with 114A134 is shown to consist of features that can be associated with underlying low-energy collective excitations, as well as particle-hole intruder and two-quasiparticle configurations. Energy level positions and branching ratios from new and existing measurements can be reasonably well fitted with a ...
Rikovska, J, Stone, N, Walters, W
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