Results 61 to 70 of about 1,106,419 (305)

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

open access: yesAdvanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle   +5 more
wiley   +1 more source

Relationships between mountain pine and climate in the French Pyrenees (Font-Romeu) studied using the radiodensitometrical method

open access: yesPirineos: Revista de Ecología de Montaña, 1994
[es] Se ha llevado a cabo un trabajo densitométrico sobre 46 Pinus uncinata (Ramond) en Font-Romeu (Cerdaña francesa). Las funciones de correlación con el clima han sido calculadas sucesivamente con el espesor de los anillos de crecimiento, la densidad ...
Cristian Rolland   +1 more
doaj   +1 more source

Fourier Transforms

open access: yesA Primer on Fourier Analysis for the Geosciences, 2018
(Here R denotes the set of real numbers, and R+ denotes the set of positive real numbers.) This series is called the real spectral-decomposition-form Fourier series of the period-p function y because of Jean Baptiste Joseph Fourier’s book on heat ...
G. Knott
semanticscholar   +1 more source

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

open access: yesAdvanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari   +4 more
wiley   +1 more source

Transformada em ondeleta: uma necessidade

open access: yesRevista Brasileira de Ensino de Física
O objetivo deste trabalho é demonstrar, dentro de um contexto histórico, a necessidade de se usar a transformada em ondeletas. Experimentos computacionais simples são usados para explicar o surgimento desta ferramenta matemática.
Maurício José Alves Bolzan
doaj   +1 more source

Multiscale Fourier Landscape Pattern Indices For Landscape Ecology

open access: yesJournal of Landscape Ecology, 2018
A factor analysis of 67 landscape pattern metrics was performed to quantify the ability of landscape pattern metrics to explain land cover pattern, and to report individual landscape pattern metric values that are statistically independent.
Spivey Alvin, Vodacek Anthony
doaj   +1 more source

Influence de l'altitude, de l'exposition et du climat sur la croissance du pin à crochets (Pinus uncinata Ram.) en Cerdagne (Pyrénées orientales françaises)

open access: yesPirineos: Revista de Ecología de Montaña, 1995
[fr] Une étude dendroécologique du Pin á crochets (Pinus uncinata Ram.) réalisée en Cerdagne française (Pyrénées Orientales) a permis de quantifier le rôle de trois facteurs stationnais sur sa croissance: l'altitude, l'exposition et le climat. 175 arbres
Jeanne Florence Schueller   +1 more
doaj   +1 more source

Performance of fourier domain vs. time domain optical coherence tomography.

open access: yesOptics Express, 2003
In this article we present a detailed discussion of noise sources in Fourier Domain Optical Coherence Tomography (FDOCT) setups. The performance of FDOCT with charge coupled device (CCD) cameras is compared to current standard time domain OCT systems. We
R. Leitgeb, C. Hitzenberger, A. Fercher
semanticscholar   +1 more source

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

open access: yesAdvanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees   +6 more
wiley   +1 more source

Le phalanstère et l’intégration sociale de l’indocilité enfantine

open access: yesMateriales para la Historia del Deporte
Critique acerbe de la civilisation, période sociale qui lui est contemporaine, Fourier s’attaque avec la même vigueur au système éducatif qui la soutient.
Boiston Rémy
doaj   +1 more source

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