915 resultados para Uncertainty with Respect to the Future
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Mode of access: Internet.
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Spine title: Gilbert's tenures.
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Title from back cover.
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Mode of access: Internet.
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"File no. 59-8."
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Signatures: [a]-c⁴, B-Z⁴, Aa-Zz⁴, Aaa-Nnn⁴ (Nnn₄ blank).
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"A continuation of the state of New-England" (p. [39]-69) by the same author, is signed: N. S. (p. 60)
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Paul H. Maloney, chairman of subcommittee.
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Each part has also special t.p.
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Hearings held Nov. 29 1973.
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Reed Smoot, chairman.
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Hearings held Oct. 15, 1963 - Dec. 10, 1963.
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1939.--pt.30. Technology and concentration of economic power. Apr.8-12, 15-19, 22-26, 1940.--31. Investments, profits, and rates of return for selected industries.
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By Dewey Anderson, executive secretary.
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We inferred phylogeny among the three major lineages of the Acari ( mites) from the small subunit rRNA gene. Our phylogeny indicates that the Opilioacariformes is the sister-group to the Ixodida+Holothyrida, not the Ixodida+Mesostigmata+Holothyrida, as previously thought. Support for this relationship increased when sites with the highest rates of nucleotide substitution, and thus the greatest potential for saturation with nucleotide substitutions, were removed. Indeed, the increase in support ( and resolution) was despite a 70% reduction in the number of parsimony-informative sites from 408 to 115. This shows that rather than 'noisy' sites having no impact on resolution of deep branches, 'noisy' sites have the potential to obscure phylogenetic relationships. The arrangement, Ixodida+Holothyrida+Opilioacariformes, however, may be an artefact of long-branch attraction since relative-rate tests showed that the Mesostigmata have significantly faster rates of nucleotide substitution than other parasitiform mites. Thus, the fast rates of nucleotide substitution of the Mesostigmata might have caused the Mesostigmata to be attracted to the outgroup in our trees. We tested the hypothesis that the high rate of nucleotide substitution in some mites was related to their short generation times. The Acari species that have high nucleotide substitution rates usually have short generation times; these mites also tend to be more active and thus have higher metabolic rates than other mites. Therefore, more than one factor may affect the rate of nucleotide substitution in these mites.