Results 201 to 210 of about 20,217 (261)

California's vernal‐pool mousetails (Myosurus, Ranunculaceae): Phylogenetic analysis of ddRADseq data, hybridization tests, and species delimitation

open access: yesJournal of Systematics and Evolution, EarlyView.
We present the first phylogenetic analysis of the Californian species of Myosurus. Our ddRADseq analysis reveals considerably more diversity than what was recognized in recent floristic treatments. Myosurus minimus subsp. apus was found to be a rare species restricted to Southern California and northwestern Baja California.
R. Douglas Stone   +2 more
wiley   +1 more source

Testing Distributional Granger Causality With Entropic Optimal Transport

open access: yesJournal of Time Series Analysis, EarlyView.
ABSTRACT We develop a novel nonparametric test for Granger causality in distribution based on entropic optimal transport. Unlike classical mean‐based approaches, the proposed method directly compares the full conditional distributions of a response variable with and without the history of a candidate predictor.
Tao Wang
wiley   +1 more source

Saccharomyces cerevisiae Yeast‐Based Supplement and Breast Milk Supply: A Randomised Placebo‐Controlled Trial

open access: yesMaternal &Child Nutrition, EarlyView.
Maternal brewer's yeast supplementation did not change the milk oligosaccharide (HMO) concentration, but more mothers felt their milk supply was increased, and fewer reported formula use by 6 months postpartum compared to those taking the placebo. This suggests the supplement may support breastfeeding, warranting further investigation in larger trials.
Lili Jia, Louise Brough, Janet L. Weber
wiley   +1 more source

Assessing the Effectiveness of Workers' Selection Exams: The Case of the Bank of Italy

open access: yesOxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT High‐stakes exams can be used to rank and select candidates for job openings, and the ability of those selected hinges on the design of the exam. I propose a method to model candidates' performance to assess how effective the exam is at selecting high‐ability candidates.
Santiago Pereda‐Fernández
wiley   +1 more source

Threshold Regression for Fixed‐T$$ T $$ Panel Data with Interactive Fixed Effects

open access: yesOxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT This paper develops a new toolbox for estimation and inference in panel data threshold regression models with interactive fixed effects and a fixed number of time periods, T$$ T $$. The toolbox is designed to be simple, accurate, and computationally efficient.
Jan Ditzen   +2 more
wiley   +1 more source

Phylogenomic Analysis of Deep-Branching Telonemid. [PDF]

open access: yesGenome Biol Evol
Bjornson S   +3 more
europepmc   +1 more source

Do Consumers Respond to Marginal Prices at Kink Points? Evidence From 40+ Million Electricity Bills in Ethiopia

open access: yesOxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT Leveraging over 40 million residential electricity billing records from more than one million meters in Ethiopia, we test whether consumers respond to marginal prices at kink points under an increasing block tariff (IBT). We exploit a unique institutional setting in which two distinct billing systems (manual postpaid and automated prepaid ...
Tensay Hadush Meles, Gunnar Köhlin
wiley   +1 more source

Home - About - Disclaimer - Privacy