Results 41 to 50 of about 1,087 (112)

Microbial Diversity Estimation and Hill Number Calculation Using the Hierarchical Pitman‐Yor Process

open access: yesStatistics in Medicine, Volume 45, Issue 18-19, August 2026.
ABSTRACT Background The human microbiome comprises the microorganisms that inhabit the various locales of the human body and plays a vital role in human health. The composition of a microbial population is often quantified through measures of species diversity, which summarize the number of species along with their relative abundances into a single ...
Kevin McGregor   +5 more
wiley   +1 more source

Estimation of Lithofacies Proportions Using Well and Well Test Data Estimation des proportions lithologiques à partir des données de puits et d'essais de puits

open access: yesOil & Gas Science and Technology, 2006
A crucial step of the two commonly used geostatistical methods for modeling heterogeneous reservoirs : the sequential indicator simulation and the truncated Gaussian simulation is the estimation of the lithofacies local proportion (or probability density)
Blanc G., Hu L. Y., Noetinger B.
doaj   +1 more source

Denning Phenology Mediates Sea‐Ice Loss Impacts on Early Reproductive Success in Polar Bears

open access: yesGlobal Change Biology, Volume 32, Issue 8, August 2026.
Changes in overwinter sheltering phenology in response to climate change and their fitness consequences have rarely been studied. Here, we show that climate change has disrupted the phenology of overwinter maternity denning in polar bears, with females emerging from den earlier when sea‐ice had been scarce the preceding year.
Marwan Naciri   +6 more
wiley   +1 more source

Convergence of formal invertible CR mappings between minimal holomorphically nondegenerate real analytic hypersurfaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
Recent advances in CR (Cauchy-Riemann) geometry have raised interesting fine questions about the regularity of CR mappings between real analytic hypersurfaces.
Joël Merker
doaj   +1 more source

Analyse de l'aléa « lave torrentielle » sur le cône de déjection du torrent du Rioulong (Hautes-Pyrénées) : une approche par scénarios

open access: yesSciences, Eaux & Territoires, 2010
Une méthodologie d'analyse de l'aléa « lave torrentielle », fondée sur l'utilisation du modèle LAVE2D du Cemagref, dans le cadre d'une approche par scénarios, est appliquée au torrent du Rioulong.
D. LAIGLE, C. PETEUIL
doaj   +1 more source

Pairwise Imitation and Tournament Graphs

open access: yesInternational Economic Review, Volume 67, Issue 3, Page 937-955, August 2026.
ABSTRACT This paper investigates strategic dynamics under the behavioral rule of pairwise interact and imitate (PII), which requires minimal information and emphasizes outperforming opponents in pairwise interactions. We characterize PII using weak tournament graphs and, for a broad class of dynamics, establish a one‐shot stability result for ...
Sung‐Ha Hwang   +3 more
wiley   +1 more source

Performance of epistasis detection methods in semi-simulated GWAS

open access: yesBMC Bioinformatics, 2018
Background Part of the missing heritability in Genome Wide Association Studies (GWAS) is expected to be explained by interactions between genetic variants, also called epistasis. Various statistical methods have been developed to detect epistasis in case-
Clément Chatelain   +3 more
doaj   +1 more source

On subset least squares estimation and prediction in vector autoregressive models with exogenous variables

open access: yesCanadian Journal of Statistics, Volume 54, Issue 2, June 2026.
Abstract We establish the consistency and the asymptotic distribution of the least squares estimators of the coefficients of a subset vector autoregressive process with exogenous variables (VARX). Using a martingale central limit theorem, we derive the asymptotic normal distribution of the estimators. Diagnostic checking is discussed using kernel‐based
Pierre Duchesne   +2 more
wiley   +1 more source

Divergence and Model Adequacy, a Semiparametric Case Study

open access: yesEntropy
Adequacy for estimation between an inferential method and a model can be defined through two main requirements: firstly the inferential tool should define a well posed problem when applied to the model; secondly the resulting statistical procedure should
Michel Broniatowski, Justin Moutsouka
doaj   +1 more source

Non‐negative Gaussian estimation of variance components in random effects models

open access: yesCanadian Journal of Statistics, Volume 54, Issue 2, June 2026.
Abstract When used to estimate variance components (VCs), confidence intervals (CIs) can be truncated at zero, have a point estimate not in the quoted CI, be empty with positive probability, or be all‐inclusive. This is because they have conflicting dual roles, since they are considered to cover the parameter with a specified probability while also ...
André Plante, Michael Plante
wiley   +1 more source

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