Results 161 to 170 of about 163,526 (188)
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Biological Theory, 2006
Exploring whether clades can reproduce leads to new perspectives on general accounts of biological development and individuation. Here we apply James Griesemer’s general account of reproduction to clades. Griesemer’s account of reproduction includes a requirement for development, raising the question of whether clades may be meaningfully said to ...
Matthew H. Haber, Andrew Hamilton
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Exploring whether clades can reproduce leads to new perspectives on general accounts of biological development and individuation. Here we apply James Griesemer’s general account of reproduction to clades. Griesemer’s account of reproduction includes a requirement for development, raising the question of whether clades may be meaningfully said to ...
Matthew H. Haber, Andrew Hamilton
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Cross-Clade CD8+ T-Cell Responses With a Preference for the Predominant Circulating Clade
JAIDS Journal of Acquired Immune Deficiency Syndromes, 2005Human immunodeficiency virus (HIV) genetic diversity is a major impediment to the design of a successful vaccine. Even if an HIV vaccine is proven effective, it remains to be seen whether this protection will extend to inter-clade, intra-clade, and recombinant strains. We used recombinant vaccinia-based interferon gamma (IFN) Elispot assays to test the
McKinnon, LR +8 more
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Clade support measures and their adequacy [PDF]
Cladistics, 2008 AbstractIn addition to hypothesis optimality, the evaluation of clade (group, edge, split, node) support is an important aspect of phylogenetic analysis. Here we clarify the logical relationship between support and optimality and formulate adequacy conditions for support measures. Support, S, and optimality, O, are both empirical knowledge claims about
Arnold G. Kluge, Taran Grant
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Herpetological Monographs, 1993
The relationships among the major lineages of frogs are summarized and an un- ranked, phylogenetic taxonomy of Anura is proposed. The names of taxa are defined according to phylogenetic principles. Several currently recognized taxa, such as "Archaeobatrachia", "Discoglos- soidea", "Leiopelmatidae", and "Discoglossidae" are paraphyletic, and the names ...
Linda S. Ford, David C. Cannatella
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The relationships among the major lineages of frogs are summarized and an un- ranked, phylogenetic taxonomy of Anura is proposed. The names of taxa are defined according to phylogenetic principles. Several currently recognized taxa, such as "Archaeobatrachia", "Discoglos- soidea", "Leiopelmatidae", and "Discoglossidae" are paraphyletic, and the names ...
Linda S. Ford, David C. Cannatella
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Natural clades differ from “random” clades: simulations and analyses
Paleobiology, 1981Using computer simulations and analytic calculations, we have evaluated whether conspicuous expansions and contractions of natural clades may have represented chance fluctuations that occurred while probabilities of speciation and extinction remained equal and constant.
Philip W. Signor +3 more
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Molecular Evidence for a Clade of Turtles
Molecular Phylogenetics and Evolution, 1999Although turtles have been generally grouped with the most primitive reptile species, the origin and phylogenetic relationships of turtles have remained unresolved to date. To confirm the phylogenetic position of turtles in amniotes, we have cloned and determined the cDNA sequences encoding for skink lactate dehydrogenase (LDH)-A and LDH-B, snake LDH-A,
Hideyuki Mannen +2 more
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Major clades in tropical Agaricus
Fungal Diversity, 2011Agaricus (Basidiomycota) is a genus of saprobic fungi that includes edible cultivated species such as Agaricus bisporus, the button mushroom. There has been considerable ecological, nutritional and medicinal interest in the genus, yet the extent of its diversity remains poorly known, particularly in subtropical and tropical areas.
Olivier Raspé +13 more
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Health Security, 2019
Clade X was a day-long pandemic tabletop exercise conducted by the Johns Hopkins Center for Health Security on May 15, 2018, in Washington, DC. In this report, we briefly describe the exercise development process and focus principally on the findings and recommendations that arose from this project.
Amesh A. Adalja +11 more
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Clade X was a day-long pandemic tabletop exercise conducted by the Johns Hopkins Center for Health Security on May 15, 2018, in Washington, DC. In this report, we briefly describe the exercise development process and focus principally on the findings and recommendations that arose from this project.
Amesh A. Adalja +11 more
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Proceedings of the 6th international workshop on Challenges of large applications in distributed environments, 2008
Now in its sixth year, Challenges of Large Applications in Distributed Environments (CLADE) has sought to encourage innovation in addressing the complex issues that arise in large-scale applications of distributed computation. Focus areas have included scheduling and mapping, data management and workflows as well as applications and infrastructure ...
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Now in its sixth year, Challenges of Large Applications in Distributed Environments (CLADE) has sought to encourage innovation in addressing the complex issues that arise in large-scale applications of distributed computation. Focus areas have included scheduling and mapping, data management and workflows as well as applications and infrastructure ...
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Clades in Heleophrynid Salientia
African Journal of Herpetology, 2008A northern and a southern clade is recognized in the Heleophrynidae, a family of southern African Salientia. A new genus, Hadromophryne is proposed for Heleoprhyne natalensis, and related Anura presently included in this species.
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