Results 61 to 70 of about 41,782 (195)

Time‐Varying Dispersion Integer‐Valued GARCH Models

Journal of Time Series Analysis, EarlyView.
ABSTRACT We introduce a general class of INteger‐valued Generalized AutoRegressive Conditionally Heteroscedastic (INGARCH) processes by allowing simultaneously time‐varying mean and dispersion parameters. We call such models time‐varying dispersion INGARCH (tv‐DINGARCH) models.
Wagner Barreto‐Souza, Luiza S. C. Piancastelli, Konstantinos Fokianos, Hernando Ombao   +3 more
wiley   +1 more source

Diet and Care Mediate the Effects of Parenting and Nutrition Interventions on Childhood Infections

Maternal &Child Nutrition, EarlyView.
ABSTRACT The effect of community‐based multi‐input interventions that promote health, nutrition, and development on childhood infections, and the pathways that explain these effects remain unclear. We conducted a secondary analysis of a factorial‐designed clustered randomized controlled trial (N = 1489) conducted in rural Pakistan to estimate the ...
Nazia Binte Ali, Arjumand Rizvi, Saima Siyal, Wafaie W. Fawzi, Aisha K. Yousafzai, Christopher R. Sudfeld   +5 more
wiley   +1 more source

Coexistence in Sympatry With Gene Flow Before Speciation Has Completed

Molecular Ecology, EarlyView.
ABSTRACT Incipient species often coexist in sympatry before complete reproductive isolation has evolved between them. How do they persist in the face of hybridization and gene flow? The challenge is more acute than ordinary ecological coexistence not only because gene flow erodes and recombines genetic differences, but also because selection against ...
Dolph Schluter, Thor Veen, Ken A. Thompson, Greg L. Owens, Diana J. Rennison   +4 more
wiley   +1 more source

Habitat Differences in Resource Density and Distribution Affect Ecology and Life History of a Landscape‐Modifying Fish

Molecular Ecology, EarlyView.
ABSTRACT Resource heterogeneity is a widespread phenomenon, as resources are rarely spaced evenly across a landscape. Variation in resource density and distribution can have a myriad of behavioural, ecological, and evolutionary consequences for populations, yet clarifying these effects is still challenging.
Aneesh P. H. Bose, Boyd Dunster, Jonathan Henshaw, Lukas Koch, Jacqueline Grimm, Kristina M. Sefc, Alex Jordan   +6 more
wiley   +1 more source

Projective geometry over F_1 and the Gaussian binomial coefficients

, 2004
Henry Cohn
openalex   +2 more sources

Extended time to maturity in Anopheles coluzzii: Implications of late egg hatch for vector control and transgene fitness

Medical and Veterinary Entomology, EarlyView.
The fitness of Anopheles coluzzii mosquito lines (VK strain) selected for early and late egg hatching was compared with each other and a reference strain (Mopti). There was an observed increase in fitness in fecundity and survival among the late‐hatching lines, but no negative effects of selection on fecundity and adult survival were detected.
Emmanuel C. Ottih, Joe M. Roberts, Toby J. A. Bruce, Frédéric Tripet   +3 more
wiley   +1 more source

Gaussian Binomial Coefficients with Negative Arguments [PDF]

, 2019
Sam Formichella, Armin Straub
openalex   +3 more sources

Gaussian binomial coefficients with negative arguments

, 2018
Sam Formichella, Armin Straub
openalex   +2 more sources

Seeing herbaria in a new light: leaf reflectance spectroscopy unlocks trait and classification modeling in plant biodiversity collections

New Phytologist, EarlyView.
Summary Reflectance spectroscopy is a rapid method for estimating traits and discriminating species. Spectral libraries from herbarium specimens represent an untapped resource for generating broad phenomic datasets across space, time, and taxa. We conducted a proof‐of‐concept study using trait data and spectra from herbarium specimens up to 179 yr old,
Dawson M. White, Jeannine Cavender‐Bares, Charles C. Davis, J. Antonio Guzmán Q., Shan Kothari, Jorge M. Robles, José Eduardo Meireles   +6 more
wiley   +1 more source

Thermal expansion of LaB₆ from 298 to 998 K. [PDF]

J Appl Crystallogr
The isobaric thermal expansion coefficient of LaB6 at 1 atm was assessed from 298 to 998 K. We propose it as a temperature calibration standard for high‐temperature X‐ray diffraction work owing to its high temperature stability.We propose LaB6 as a temperature calibration standard for high‐temperature (HT) X‐ray diffractometry owing to its high ...
Akdoğan EK, Payzant EA.
europepmc   +2 more sources