Results 341 to 350 of about 5,273,588 (373)
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Using ggtree to Visualize Data on Tree‐Like Structures
Current Protocols in Bioinformatics, 2020Ggtree is an R/Bioconductor package for visualizing tree‐like structures and associated data. After 5 years of continual development, ggtree has been evolved as a package suite that contains treeio for tree data input and output, tidytree for tree data ...
Guangchuang Yu
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2023
This book is a warning and a toolkit for the future of forest recovery. The book investigates the critical biological threats endangering tree species native to the forests of eastern North America, providing a needed focus on this plight. The book suggests that if we are to save our forests, the first step is to recognize the threats in front of us ...
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This book is a warning and a toolkit for the future of forest recovery. The book investigates the critical biological threats endangering tree species native to the forests of eastern North America, providing a needed focus on this plight. The book suggests that if we are to save our forests, the first step is to recognize the threats in front of us ...
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Toward Defining the Course of Evolution: Minimum Change for a Specific Tree Topology
, 1971Fitch, W. M. (Dept. of Physiological Chemistry, Univ. of Wisconsin, Madison, Wisconsin, 53706), 1971. Toward defining the course of evolution: minimum change for a specific tree topology. Syst. Zool., 20:406-416.-A method is presented that is asserted to
W. Fitch
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Molecular Ecology, 1998
The practice of tracking geographical divergence along a phylogenetic tree has added an evolutionary perspective to biogeographic analysis within single species. In spite of the popularity of phylogeography, there is an emerging problem. Recurrent mutation and recombination both create homoplasy, multiple evolutionary occurrences of the same character ...
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The practice of tracking geographical divergence along a phylogenetic tree has added an evolutionary perspective to biogeographic analysis within single species. In spite of the popularity of phylogeography, there is an emerging problem. Recurrent mutation and recombination both create homoplasy, multiple evolutionary occurrences of the same character ...
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Genome trees and the tree of life
Trends in Genetics, 2002Genome comparisons indicate that horizontal gene transfer and differential gene loss are major evolutionary phenomena that, at least in prokaryotes, involve a large fraction, if not the majority, of genes. The extent of these events casts doubt on the feasibility of constructing a 'Tree of Life', because the trees for different genes often tell ...
Igor B. Rogozin +3 more
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SSRN Electronic Journal, 2002 Abstract In this paper we contrast the main workhorse model in asset pricing theory, the Lucas (1978) tree model (LT-Model), to a benchmark model in financial equilibrium theory, the real assets model (RA-Model). It is commonly believed that the two models entail similar conclusions since the LT-Model is a special case of the RA-Model.
Anna Pavlova, Anna Pavlova, David Cass
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, 1978
This classic title, originally printed in 1976, contains a lucid description and summary of basic dendrochronology, especially its application to Beams from these activities that various statistical methods such as they are covered.
P. Adlard, H. Fritts
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This classic title, originally printed in 1976, contains a lucid description and summary of basic dendrochronology, especially its application to Beams from these activities that various statistical methods such as they are covered.
P. Adlard, H. Fritts
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Mathematics Magazine, 2006
ture game Trinity, you have a gnomon you must screw into a hole?but the threads in the hole are going the wrong way. Wandering about, you encounter an "abstract sculpture," inscribed with the words Felix Klein 1849-1925. Nearby are strange leafy tunnels.
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ture game Trinity, you have a gnomon you must screw into a hole?but the threads in the hole are going the wrong way. Wandering about, you encounter an "abstract sculpture," inscribed with the words Felix Klein 1849-1925. Nearby are strange leafy tunnels.
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2017
This chapter considers the problem of counting trees. Every connected graph G has a spanning tree, that is, a connected acyclic subgraph containing all the vertices of G. If G has no cycles, it is its own unique spanning tree. If G has cycles, we can locate any cycle and delete one of its edges. Repeat this process until no cycle remains.
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This chapter considers the problem of counting trees. Every connected graph G has a spanning tree, that is, a connected acyclic subgraph containing all the vertices of G. If G has no cycles, it is its own unique spanning tree. If G has cycles, we can locate any cycle and delete one of its edges. Repeat this process until no cycle remains.
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