Results 31 to 40 of about 18,294,799 (361)

TLDR: time lag/delay reconstructor [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2021
ABSTRACT We present the time lag/delay reconstructor (TLDR), an algorithm for reconstructing velocity delay maps in the maximum a posteriori framework for reverberation mapping. Reverberation mapping is a tomographical method for studying the kinematics and geometry of the broad-line region of active galactic nuclei at high spatial ...
M D Anderson, F Baron, M C Bentz
openaire   +3 more sources

Lag Time as an Indicator of the Link between Agricultural Pressure and Drinking Water Quality State

open access: yesWater, 2020
Diffuse nitrogen (N) pollution from agriculture in groundwater and surface water is a major challenge in terms of meeting drinking water targets in many parts of Europe.
Hyojin Kim   +7 more
semanticscholar   +1 more source

Fast Ensemble Smoothing [PDF]

open access: yes, 2006
Smoothing is essential to many oceanographic, meteorological and hydrological applications. The interval smoothing problem updates all desired states within a time interval using all available observations.
A Gelb   +17 more
core   +1 more source

Certain Associations Between Iron Biomarkers and Total and γ' Fibrinogen and Plasma Clot Properties Are Mediated by Fibrinogen Genotypes

open access: yesFrontiers in Nutrition, 2021
Introduction: Evidence for the relationship between body iron and cardiovascular disease (CVD) is inconsistent and mechanisms involved remain poorly understood. Therefore, we first investigated whether there are linear or non-linear relationships between
Petro H. Rautenbach   +6 more
doaj   +1 more source

Time-Lag Selection for Time-Series Forecasting Using Neural Network and Heuristic Algorithm

open access: yesElectronics, 2021
The time-series forecasting is a vital area that motivates continuous investigate areas of intrigued for different applications. A critical step for the time-series forecasting is the right determination of the number of past observations (lags).
O. Surakhi   +7 more
semanticscholar   +1 more source

Sustainable Additives for the Production of Hydrogen via Sodium Borohydride Hydrolysis

open access: yesApplied Sciences, 2023
Finding stable solutions for hydrogen storage is one of the main challenges to boosting its deployment as an energy vector and contributing to the decarbonization of the energy sector.
Lucía Gómez-Coma   +6 more
doaj   +1 more source

The flux-dependent X-ray time lags in NGC 4051 [PDF]

open access: yes, 2013
We present an analysis of the X-ray time lags for the highly variable Seyfert 1 galaxy NGC 4051, based on a series of XMM-Newton observations taken in 2009. We investigate the Fourier frequency dependent time lags in the light curves between the 0.3--1.0
Alston, W. N., Uttley, P., Vaughan, S.
core   +2 more sources

Time Elapsed from Onset of Symptoms to Diagnosis of Gonorrhoea in Swedish Patients, 1999-2009

open access: yesAsian Journal of Medical Sciences, 2013
Background: Gonococcal infection remains an important public health problem worldwide. The incidence of reported gonorrhoea cases in Sweden raised by 32%, from 5.9 to 7.8 cases per 100,000 in 2001 to 2008.The aim of this study is to estimate the lag time
Arpana Sharma
doaj   +1 more source

Nonparametric Lag Selection for Time Series [PDF]

open access: yesJournal of Time Series Analysis, 2000
A nonparametric version of the Final Prediction Error (FPE) is analysed for lag selection in nonlinear autoregressive time series under very general conditions including heteroskedasticity. We prove consistency and derive probabilities of incorrect selections that have been previously unavailable. Since it is more likely to overfit (have too many lags)
Tschernig, Rolf, Yang, Lijian
openaire   +4 more sources

Cinética de fermentação ruminal in vitro de silagens de híbridos de sorgo

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2014
Objetivou-se com esta pesquisa avaliar as silagens de 23 híbridos de sorgo por meio da técnica in vitro semiautomática de produção de gases. Foi utilizado o delineamento inteiramente ao acaso, com 23 tratamentos e três repetições, sendo os tratamentos as
T.C. Silva   +7 more
doaj   +1 more source

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