Results 41 to 50 of about 104,920 (275)

Lognormal variability in BL Lacertae

open access: yes, 2009
X-ray data from the blazar BL Lac are used to investigate the nature of its variability, and more precisely the flux dependency of the variability and the distribution of fluxes.
Albert   +13 more
core   +1 more source

Understanding the Dynamics of Nanoparticle Formation and Evolution in Functional Oxides via In Situ SAXS/WAXS

open access: yesAdvanced Materials Interfaces, EarlyView.
In situ SAXS/WAXS enables real‐time tracking of nanoparticle formation and evolution in exsolved and infiltrated Ni‐based perovskites under reducing conditions. The combined technique captures nucleation, growth, and coarsening dynamics with high temporal resolution, providing statistically robust insights into structural and morphological ...
Elena Vicente   +4 more
wiley   +1 more source

Evo-SETI: A Mathematical Tool for Cladistics, Evolution, and SETI

open access: yesLife, 2017
The discovery of new exoplanets makes us wonder where each new exoplanet stands along its way to develop life as we know it on Earth. Our Evo-SETI Theory is a mathematical way to face this problem.
Claudio Maccone
doaj   +1 more source

Logarithmic distributions prove that intrinsic learning is Hebbian

open access: yes, 2017
In this paper, we present data for the lognormal distributions of spike rates, synaptic weights and intrinsic excitability (gain) for neurons in various brain areas, such as auditory or visual cortex, hippocampus, cerebellum, striatum, midbrain nuclei ...
Scheler, Gabriele
core   +2 more sources

From Copper Nanoparticles to Alumina Encapsulated Porous Layers With Enhanced Mechanical Stability

open access: yesAdvanced Materials Interfaces, EarlyView.
This study analyzes the synthesis‐structure relation of individual Cu nanoparticles and highly porous nanoparticle‐based Cu films using different sputtering‐based nanoparticle sources. The inherent mechanical instability of the films is tackled with Al2O3 encapsulation through atomic layer deposition, enabling 4‐fold increase in critical force in ...
Dominik Gutnik   +6 more
wiley   +1 more source

Variability in the Log Domain and Limitations to Its Approximation by the Normal Distribution

open access: yesCPT: Pharmacometrics & Systems Pharmacology, 2020
Pharmacometric models using lognormal distributions have become commonplace in pharmacokinetic–pharmacodynamic investigations. The extent to which it can be interpreted by traditional description of variability through the normal distribution remains ...
Jeroen Elassaiss‐Schaap   +1 more
doaj   +1 more source

A new subgrid-scale representation of hydrometeor fields using a multivariate PDF [PDF]

open access: yesGeoscientific Model Development, 2016
The subgrid-scale representation of hydrometeor fields is important for calculating microphysical process rates. In order to represent subgrid-scale variability, the Cloud Layers Unified By Binormals (CLUBB) parameterization uses a multivariate ...
B. M. Griffin, V. E. Larson
doaj   +1 more source

Constrained realizations and minimum variance reconstruction of non-Gaussian random fields [PDF]

open access: yes, 1995
With appropriate modifications, the Hoffman--Ribak algorithm that constructs constrained realizations of Gaussian random fields having the correct ensemble properties can also be used to construct constrained realizations of those non-Gaussian random ...
Sheth, Ravi K.
core   +2 more sources

Oral Streptococcus salivarius Couples Neutrophil IRGM1 Signaling to NET Formation and Colorectal Cancer Metastasis

open access: yesAdvanced Science, EarlyView.
The oral bacterium Streptococcus salivarius promotes colorectal cancer metastasis by inducing neutrophil extracellular trap (NET) formation. Mechanistically, IRGM1–IQGAP1 interaction activates Wnt5a–PI3K/AKT signaling in neutrophils, driving NET‐mediated tumor progression.
Fengyi Liu   +13 more
wiley   +1 more source

LiDAR-Based Morphometry of Dolines in Aggtelek Karst (Hungary) and Slovak Karst (Slovakia)

open access: yesRemote Sensing
LiDAR-based digital terrain models (DTMs) represent an advance in the investigation of small-scale geomorphological features, including dolines of karst terrains.
Tamás Telbisz   +2 more
doaj   +1 more source

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