Results 111 to 120 of about 2,518,110 (330)

Branch length estimation and divergence dating: estimates of error in Bayesian and maximum likelihood frameworks

open access: yesBMC Evolutionary Biology, 2010
Background Estimates of divergence dates between species improve our understanding of processes ranging from nucleotide substitution to speciation. Such estimates are frequently based on molecular genetic differences between species; therefore, they rely
Mueller Rachel L, Schwartz Rachel S
doaj   +1 more source

Using Phylogenomic Data to Explore the Effects of Relaxed Clocks and Calibration Strategies on Divergence Time Estimation: Primates as a Test Case

open access: yesbioRxiv, 2017
Primates have long been a test case for the development of phylogenetic methods for divergence time estimation. Despite a large number of studies, however, the timing of origination of crown Primates relative to the K-Pg boundary and the timing of ...
Mario dos Reis   +5 more
semanticscholar   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Some New Inequalities for Jeffreys Divergence Measure in Information Theory

open access: yes, 2000
Some new inequalities for the well-known Jeffreys divergence measure in Information Theory are ...
Sunde, J   +2 more
core  

Phylogenetic analysis and divergence time estimation.

open access: yes, 2015
(A) The phylogenetic tree of the five monocots. The results are 100% supported by the 1,000 bootstraps analysis. (B) Estimation of divergence time. Blue bars indicate 95% confidence intervals.
Zhang Zhang (14172)   +5 more
core   +1 more source

Minimum copula divergence for robust estimation

open access: yesInformation Geometry
This paper introduces a robust estimation framework based solely on the copula function. We begin by introducing a family of divergence measures tailored for copulas, including the \(α\)-, \(β\)-, and \(γ\)-copula divergences, which quantify the discrepancy between a parametric copula model and an empirical copula derived from data independently of ...
Eguchi, Shinto, Kato, Shogo
openaire   +2 more sources

Dual divergence estimators and tests: Robustness results

open access: yesJournal of Multivariate Analysis, 2011
The class of dual $ϕ$-divergence estimators (introduced in Broniatowski and Keziou (2009) is explored with respect to robustness through the influence function approach. For scale and location models, this class is investigated in terms of robustness and asymptotic relative efficiency.
Toma, Aida, Broniatowski, Michel
openaire   +3 more sources

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

open access: yesFEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez   +2 more
wiley   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Graph-based Estimation of Information Divergence Functions [PDF]

open access: yes, 2017
: Information divergence functions, such as the Kullback-Leibler divergence or the Hellinger distance, play a critical role in statistical signal processing and information theory; however estimating them can be challenge.

core  

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