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Physical Sciences and Mathematics Commons™
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Full-Text Articles in Physical Sciences and Mathematics
Extensive Phylogenetic Analysis Of A Soil Bacterial Community Illustrates Extreme Taxon Evenness And The Effects Of Amplicon Length, Degree Of Coverage, And Dna Fractionation On Classification And Ecological Parameters, Sergio E. Morales, Theodore F. Cosart, Jesse Johnson, William Holben
Extensive Phylogenetic Analysis Of A Soil Bacterial Community Illustrates Extreme Taxon Evenness And The Effects Of Amplicon Length, Degree Of Coverage, And Dna Fractionation On Classification And Ecological Parameters, Sergio E. Morales, Theodore F. Cosart, Jesse Johnson, William Holben
Computer Science Faculty Publications
To thoroughly investigate the bacterial community diversity present in a single composite sample from an agricultural soil and to examine potential biases resulting from data acquisition and analytical approaches, we examined the effects of percent G+C DNA fractionation, sequence length, and degree of coverage of bacterial diversity on several commonly used ecological parameters (species estimation, diversity indices, and evenness). We also examined variation in phylogenetic placement based on multiple commonly used approaches (ARB alignments and multiple RDP tools). The results demonstrate that this soil bacterial community is highly diverse, with 1,714 operational taxonomic units demonstrated and 3,555 estimated (based on …
A Community Ice Sheet Model For Sea Level Prediction, William Lipscomb, Robert Bindschadler, Ed Bueler, David Holland, Jesse Johnson, Stephen Price
A Community Ice Sheet Model For Sea Level Prediction, William Lipscomb, Robert Bindschadler, Ed Bueler, David Holland, Jesse Johnson, Stephen Price
Computer Science Faculty Publications
Summary of a workshop that was held at Los Alamos National Laboratory, New Mexico, 18-20 August 2008, whose primary goal was to create a detailed plan for developing, testing, and implementing a Community Ice Sheet Model (CISM) to aid in predicting sea level rise.
Reinterpreting No Free Lunch, Jonathan E. Rowe, Michael D. Vose, Alden H. Wright
Reinterpreting No Free Lunch, Jonathan E. Rowe, Michael D. Vose, Alden H. Wright
Computer Science Faculty Publications
Since it’s inception, the “No Free Lunch theorem” has concerned the application of symmetry results rather than the symmetries themselves. In our view, the conflation of result and application obscures the simplicity, generality, and power of the symmetries involved. This paper separates result from application, focusing on and clarifying the nature of underlying symmetries. The result is a general set-theoretic version of NFL which speaks to symmetries when arbitrary domains and co-domains are involved. Although our framework is deterministic, we note situations where our deterministic set-theoretic results speak nevertheless to stochastic algorithms.