Results 131 to 140 of about 83,338 (291)

Forecasting With Machine Learning Shadow‐Rate VARs

open access: yesJournal of Forecasting, Volume 45, Issue 2, Page 770-786, March 2026.
ABSTRACT Interest rates are fundamental in macroeconomic modeling. Recent studies integrate the effective lower bound (ELB) into vector autoregressions (VARs). This paper studies shadow‐rate VARs by using interest rates as a latent variable near the ELB to estimate their shadow‐rate values.
Michael Grammatikopoulos
wiley   +1 more source

A Rapid and Sensitive Method for the Determination of Chitosan Concentration by NMR Relaxometry

open access: yesMagnetic Resonance in Chemistry, Volume 64, Issue 3, Page 257-264, March 2026.
ABSTRACT A rapid, reagent‐free method for the quantification of chitosan in aqueous solutions was developed using 1H nuclear magnetic resonance (NMR) relaxometry. Transverse relaxation times (T2) of chitosan solutions (5–1000 mg/L) were measured with a Carr–Purcell–Meiboom–Gill (CPMG) sequence on a benchtop NMR relaxometer.
Marta Férová, Jiří Kalina
wiley   +1 more source

LAPLACE TRANSFORMATION SOLUTION OF ELECTRO-MAGNETO-THERMOELASTIC LAMINATED ORTHOGONAL HYPERBOLIC SHELL WITH FOUR SIMPLY SUPPORTED

open access: yesJixie qiangdu, 2018
Based on Electromagnetic thermoelastic constitutive equations,its increased dimensions constitutive relationship on the basis of relevant literature was established,and the electromagnetic thermo-elastic material generic shell homogeneous state equations
LIU YanHong, YANG WeiXu
doaj  

Dose‐Dependent Effects of Biochar on Soil Revealed by Fast Field‐Cycling (FFC) NMR: From Molecular Water Dynamics to Soil Functionality

open access: yesMagnetic Resonance in Chemistry, Volume 64, Issue 3, Page 349-364, March 2026.
Dose–response of biochar in a clay soil: fifteen mixtures (fBC 0–1) reveal nonlinear thresholds (pH/EC) and sharp WHC gains near fBC ≈ 0.3–0.5. Coupled FT‐IR and FFC‐NMR (0.01–10 MHz; ModelFree τc distributions) link water dynamics to soil functionality.
Calogero Librici   +6 more
wiley   +1 more source

Photo‐Responsive Glyco‐Microfibers: Design, Self‐Assembly, and Morphological Control of Aqueous Microdroplets

open access: yesChemSystemsChem, Volume 8, Issue 2, March 2026.
Aqueous self‐assembly of a 2‐nitrobenzyl‐functionalized glucosamine derivative leads to the formation of photo‐responsive glyco‐microfibers via cooperative noncovalent interactions, primarily driven by π–π stacking and hydrogen bonding. Upon photo‐irradiation, the glyco‐microfibers undergo dis‐assembly even within confined water‐in‐oil microdroplets ...
Fumiko Nakagawa   +7 more
wiley   +1 more source

A Comparison of Monte Carlo Based Marginal Likelihood Estimators

open access: yesWIREs Computational Statistics, Volume 18, Issue 1, March 2026.
Comparison of marginal likelihood estimation methods. ABSTRACT Marginal likelihood plays a central role in Bayesian model comparison and hypothesis testing, but its computation is often challenging in practice. This article reviews recent Monte Carlo methods that rely on the availability of Markov chain Monte Carlo (MCMC) samples from the posterior and
Aolan Li   +5 more
wiley   +1 more source

Convolutions with probability densities and applications to PDEs

open access: yesElectronic Journal of Differential Equations, 2017
In this article we introduce several new convolution operators, generated by some known probability densities. By using the inverse Fourier transform and taking inverse steps (in the analogues of the classical procedures used for example in the heat ...
Sorin G. Gal
doaj  

Engineering Ultrasound Contrast Agents for Targeted Therapeutics: A Theranostic Approach to Drug Delivery, Gene Therapy, and Immunomodulation

open access: yesAdvanced NanoBiomed Research, Volume 6, Issue 2, February 2026.
Ultrasound contrast agents, including microbubbles and nanobubbles, transform imaging and targeted therapy through precise engineering of size, shell composition, and surface properties. This review explores how these innovations enable tissue‐specific delivery, enhance therapeutic efficacy, and extend applications from vascular imaging to tumor ...
Ashkan Seza   +2 more
wiley   +1 more source

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