Results 171 to 180 of about 202,770 (288)

Space‐Time Smoothness and Parsimony in Covariance Functions

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT This paper challenges the trade off between computational efficiency and statistical accuracy within the framework of Gaussian space‐time processes. Under such a framework, the space‐time dependence is completely specified through the space‐time covariance function.
Tarik Faouzi   +2 more
wiley   +1 more source

Attractors for an Energy‐Damped Viscoelastic Plate Equation

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper, we consider a class of non‐autonomous beam/plate equations with an integro‐differential damping given by a possibly degenerate memory and an energy damping given by a nonlocal ε$$ \varepsilon $$‐perturbed coefficient. For each ε>0$$ \varepsilon >0 $$, we show that the dynamical system generated by the weak solutions of the ...
V. Narciso   +3 more
wiley   +1 more source

Structural complexity of hard substrates shapes shallow marine benthic communities

open access: yesOikos, EarlyView.
Structurally complex habitats offer niche diversity, with varying biotic and abiotic conditions, generally leading to higher biodiversity compared to simpler habitats. However, our understanding of the response of ecological communities to increased complexity and the underlying drivers remain ambiguous due to discrepancies in how complexity is ...
Esther Suzanne Witte   +12 more
wiley   +1 more source

Effect of Polypropylene‐Grafted‐Maleic Anhydride and Rice Husk Particle Size on 3D‐Printing Filament Composites From Recycled Polypropylene

open access: yesPolymer Composites, EarlyView.
Development of 3D printing composite filaments from recycled polypropylene and agro‐industrial residues: blending, extrusion, and mechanical validation. ABSTRACT This study evaluates the combined roles of particle size and the addition of maleic anhydride polypropylene (PP‐g‐MAH) to improve 3D printing and mechanical properties of composite filaments ...
Maria A. Morales   +6 more
wiley   +1 more source

Influence of Capillary's Surface Scattering for Small‐Angle X‐Ray Scattering Measurements

open access: yesphysica status solidi (a), EarlyView.
Thin‐walled (<20 μm) glass capillaries are used for high‐sensitive small‐angle X‐ray scattering measurements. It is shown that the scattering from surface structures is relevant for q < 0.3 nm−1. The reason for these structures is discussed experimentally and a complete model for BK3.3 glass and fused silica in the q‐range 0.01–20 nm−1 is given.
Jens Illemann   +2 more
wiley   +1 more source

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