A5045732769- Hydrology and Sediment Transport Processes
- Statistical Methods and Inference
- Bayesian Methods and Mixture Models
- Genomics and Phylogenetic Studies
- Soil erosion and sediment transport
- Ecology and Vegetation Dynamics Studies
- Soil Geostatistics and Mapping
- Rangeland and Wildlife Management
- Animal Disease Management and Epidemiology
- Enhanced Oil Recovery Techniques
- Geological formations and processes
- Soil Carbon and Nitrogen Dynamics
- Statistical Distribution Estimation and Applications
- CO2 Sequestration and Geologic Interactions
- Geochemistry and Geologic Mapping
- Landslides and related hazards
- Statistics Education and Methodologies
- Reproductive tract infections research
- Genetic diversity and population structure
- Hydrology and Watershed Management Studies
- Advanced Statistical Methods and Models
- Viral gastroenteritis research and epidemiology
- Statistical Methods and Bayesian Inference
- Air Quality and Health Impacts
- Cryospheric studies and observations
Emory University
2024
West Virginia University
2017-2024
University of Wyoming
2009-2019
Wyoming Department of Education
2000-2017
University of California, Riverside
2015
Statistical and Applied Mathematical Sciences Institute
2013-2014
North Carolina State University
2013-2014
North Dakota State University
2002
University of Georgia
1995
Colorado State University
1992-1993
Abstract The incidence of preterm birth exceeds 10% worldwide. There are significant disparities in the frequency among populations within countries, and women African ancestry disproportionately bear burden risk United States. In present study, we report a community resource that includes ‘omics’ data from approximately 12,000 samples as part integrative Human Microbiome Project. Longitudinal analyses 16S ribosomal RNA, metagenomic, metatranscriptomic cytokine profiles 45 90 term controls...
Genomes of animals as different sponges and humans show conservation global architecture. Here we that multiple genomic features including transposon diversity, developmental gene repertoire, physical order, intron-exon organization are shattered in the tunicate Oikopleura, belonging to sister group vertebrates retaining chordate morphology. Ancestral architecture animal genomes can be deeply modified may therefore largely nonadaptive. This rapidly evolving lineage thus offers unique...
A crude oil and a synthetic reservoir water are used to prepare water-in-oil emulsions. The droplet-size distribution of emulsions is measured by digitally processing optical micrographs. time evolution the as proxy emulsion stability. procedure for obtaining homogeneous aliquots initial developed. yields statistical replicas sample that allow one measure size distributions through direct observation micrographs period up 7 days. diluted addition distilled determine how ionic strength...
Abstract We compiled a data set of 541 bankfull measurements alluvial rivers (see supporting information) and used Bayesian linear regression to examine empirical theoretical support for the hypothesis that channels adjust predictable condition basal shear stress as function sediment transport mode. An closure based on channel slope, depth, median grain size is proposed results in scaling Shields with inverse square root particle Reynolds number. The relationship sufficient purposes...
Background: Recent studies of various human microbiome habitats have revealed thousands bacterial species and the existence large variation in communities microorganisms same across individual subjects. Previous efforts to summarize this diversity, notably gut vagina, categorized profiles by clustering them into community state types (CSTs). The functional relevance specific CSTs has not been established. Objective: We investigate whether can be used assess dynamics microbiome. Design:...
Conserving a declining species that is facing many threats, including overlap of its habitats with energy extraction activities, depends upon identifying and prioritizing the value remain. In addition, habitat quality often compromised when source are lost or fragmented due to anthropogenic development. Our objective was build an ecological model classify map in terms sink dynamics for Greater Sage‐Grouse ( Centrocercus urophasianus ) Atlantic Rim Project Area (ARPA), developing coalbed...
We systematically compare an event-by-event heavy-ion collision model to data from the CERN Large Hadron Collider. Using a general Bayesian method, we probe multiple parameters including fundamental quark-gluon plasma properties such as specific shear viscosity $\ensuremath{\eta}/s$, calibrate optimally reproduce experimental data, and extract quantitative constraints for all simultaneously. The method is universal easily extensible other models.
Abstract A thermospheric neutral mass density model with robust and reliable uncertainty estimates is developed based on the Space Environment Technologies (SET) High Accuracy Satellite Drag Model (HASDM) database. This database, created by SET, contains 20 years of outputs from U.S. Force's HASDM, which currently represents state art for drag modeling. We utilize principal component analysis dimensionality reduction, creates coefficients upon nonlinear machine‐learned (ML) regression models...
The human microbiota composition is associated with a number of diseases including obesity, inflammatory bowel disease, and bacterial vaginosis. Thus, microbiome research has the potential to reshape clinical therapeutic approaches. However, raw count data require careful pre-processing steps that take into account both sparsity counts large taxa are being measured. Filtering defined as removing present in small samples have where they observed. Despite progress quality filtering approaches,...
Fetal infections with bovine viral diarrhea virus (BVDV) may result in infertility, abortions, stillbirths, developmental anomalies, and weak calves.1 Infection of the fetus from 58 to 120 days gestation create persistently infected (PI) calves that shed continuously perpetuate herd infection.10,11 In beef herds, calf losses PI have a significant impact on productivity.14 Vaccination modified live (MLV) BVDV vaccines is commonly practiced Wyoming herds prevent reproductive due infection....
Abstract This article illustrates univariate and conditional saddle-point density distribution function approximations. The emphasis is on the applications calculations needed to compute Uses of approximations include p value computations for some test statistics, finite mixture distributions, convolutions.
AbstractThis article considers the problem of detecting outliers in time series data and proposes a general detection method based on wavelets. Unlike other procedures found literature, our does not require that model be specified for data. Also, use is restricted to generated from ARIMA processes. The effectiveness proposed compared with existing outlier procedures. Comparisons various models, sample sizes, parameter values illustrate method.Key Words: Additive outlierInnovational
Measured particle-size distributions are commonly reduced to one characteristic value (e.g., median grain diameter) that is used in sediment transport modeling and other analyses. These values often interpolated from empirical or fitted distributions, usually assuming observed grain-size populations adequately represented by Gaussian Normal distributions. In order investigate the implications of this approach, we (1) statistically characterize samples bed-material load, suspended slackwater...
Recent advances in next-generation sequencing technology have yielded increasing cost-effectiveness and higher throughput produced per run, turn, greatly influencing the analysis of DNA sequences. Among various technologies, Illumina is by far most widely used platform. However, platform suffers from several imperfections that can be attributed to chemical processes inherent sequencing-by-synthesis technology. With enormous amounts reads produced, statistical methodologies computationally...
Measurements of the deformation a dense array boreholes in Worthington Glacier, Alaska, show that glacier moves with generally bed‐parallel motion. Strain 200 m deep valley is constant near surface but follows nonlinear vertical profile below depth about 120 m. By 180 m, octahedral strain rate reaches 0.35 yr −1 . The three‐dimensional velocity field shows spatial complexity significant deviations from plane strain, despite relatively simple geometry vicinity 6×10 6 3 study volume. No...
Objective: This project contributes to the emerging research that aims identify distinct body mass index (BMI) trajectory types in population. We clusters of long-term BMI curves among older adults and determine how differ with respect initial health. Method: Health Retirement Study cohort ( N = 9,893) information collected up 10 waves (1992-2010) is analyzed using a powerful cutting-edge approach: hierarchical clustering functions estimated via Principal Analysis by Conditional Expectations...
Comparisons of soil aggregation and aggregate‐protected organic matter among textures in the same climatic zone mineralogical composition are somewhat limited. Two undisturbed, semiarid sites northeastern Wyoming were selected to determine differences between loam sandy clay soils. Additionally, data from these two used illustrate statistical approaches analysis: Bayesian modeling context a two‐sample comparison means conventional t ‐tests. Examination posterior distributions (Bayesian...