Results 61 to 70 of about 30,733 (250)

Altered Cerebrospinal Fluid Tryptophan–Kynurenine Pathway Metabolism in Multiple System Atrophy

Movement Disorders, EarlyView.
Abstract Background Alterations in tryptophan–kynurenine (TRP‐KYN) metabolism, which is associated with neuroinflammation, remain unclear in multiple system atrophy (MSA). Objective The aim was to investigate cerebrospinal fluid (CSF) TRP metabolites in MSA and their associations with other biomarkers.
Ryunosuke Nagao, Kazuya Kawabata, Yasuaki Mizutani, Sayuri Shima, Akihiro Ueda, Mizuki Ito, Yasuhiro Maeda, Akihiro Mouri, Hirohisa Watanabe   +8 more
wiley   +1 more source

Nonparametric Inference for Time-Varying Coefficient Quantile Regression

Journal of Business & Economic Statistics, 2017
The article considers nonparametric inference for quantile regression models with time-varying coefficients. The errors and covariates of the regression are assumed to belong to a general class of locally stationary processes and are allowed to be cross-dependent.
Zhou, Zhou, Wu, Weichi
openaire   +1 more source

A plug-in bandwidth selector for nonparametric quantile regression [PDF]

TEST, 2018
In the framework of quantile regression, local linear smoothing techniques have been studied by several authors, particularly by Yu and Jones (J Am Stat Assoc 93:228–237, 1998). The problem of bandwidth selection was addressed in the literature by the usual approaches, such as cross-validation or plug-in methods.
Conde Amboage, Mercedes, Sánchez Sellero, César   +1 more
openaire   +2 more sources

Climate‐driven intraspecific shifts in seed germination phenology: Consequences for native temperate woodland restoration and regeneration

PLANTS, PEOPLE, PLANET, EarlyView.
As climate change alters seasonal patterns, temperate tree populations face a growing risk of phenological mismatch, where seed dispersal and germination no longer align with favourable conditions for survival. This study predicted how warming by the end of the century will affect seed dormancy breaking and germination in populations of three UK tree ...
Roberta L. C. Dayrell, Charlotte E. Seal, Kaitalin White, Elena Fouce Hernandez, Pablo Gómez Barreiro, Lee Oliver, Adam Donaldson, Ted Chapman, Efisio Mattana   +8 more
wiley   +1 more source

Stop Using Limiting Stimuli as a Measure of Sensitivities of Energetic Materials

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Accurately estimating the sensitivity of explosive materials is a potentially life‐saving task that requires standardised protocols across nations. One of the most widely applied procedures worldwide is the so‐called ‘1‐In‐6’ test from the United Nations (UN) Manual of Tests in Criteria, which estimates a ‘limiting stimulus’ for a material. In
Dennis Christensen, Geir Petter Novik
wiley   +1 more source

Delineation of homogenous regions using hydrological variables predicted by projection pursuit regression [PDF]

Hydrology and Earth System Sciences, 2016
This study investigates the utilization of hydrological information in regional flood frequency analysis (RFFA) to enforce desired properties for a group of gauged stations.
M. Durocher, F. Chebana, T. B. M. J. Ouarda   +2 more
doaj   +1 more source

COBASE: A new copula‐based shuffling method for ensemble weather forecast postprocessing

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We propose COBASE, a novel copula‐based postprocessing methododology that combines the strengths of multivariate parametric correction with non‐parametric rank‐based approaches. We consider two case studies for multi‐site temperature in Austria and multi‐site temperature and dew‐point temperature in the Netherlands.
Maurits Flos, Bastien François, Irene Schicker, Kirien Whan, Elisa Perrone   +4 more
wiley   +1 more source

Bayesian Quantile Regression for Single-Index Models

, 2011
Using an asymmetric Laplace distribution, which provides a mechanism for Bayesian inference of quantile regression models, we develop a fully Bayesian approach to fitting single-index models in conditional quantile regression.
Gramacy, Robert B., Hua, Yuao, Lian, Heng   +2 more
core   +1 more source

Nonparametric Multiple-Output Center-Outward Quantile Regression [PDF]

Journal of the American Statistical Association
36 ...
Barrio Tellado, Eustasio del, Sanz, Alberto González, Hallin, Marc   +2 more
openaire   +2 more sources

Statistical post‐processing of operational dual‐resolution wind‐speed ensemble forecasts

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The performance of raw and post‐processed 50‐member medium‐ and 100‐member extended‐range 10‐m wind‐speed forecasts of the European Centre for Medium‐Range Weather Forecasts and their various dual‐resolution combinations is investigated. Results show that post‐processing improves skill and reduces the differences between the various configurations ...
Sándor Baran, Mária Lakatos
wiley   +1 more source