Results 81 to 90 of about 51,497 (156)

Global Diurnal Precipitation Cycle in the AI Model GraphCast and a 5‐km Unified Model: Challenges and Opportunities

open access: yesGeophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract This study evaluates the ability of the AI weather forecast model GraphCast to reproduce the global diurnal cycle of boreal summer precipitation, comparing it with Integrated Multi‐satellite Retrievals for GPM (IMERG) satellite observations, the ERA5 reanalysis, and an experimental global 5‐km Met Office Unified Model (UM) which is convection ...
Emanuele Silvio Gentile   +4 more
wiley   +1 more source

An Optimized Parameterization of Sub‐Grid Scale Advection for Convection Permitting Models

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.
Abstract Convection‐permitting models (CPMs) explicitly resolve deep convection yet under‐resolve the organized lateral exchanges among drafts and their environment that control entrainment/detrainment, precipitation efficiency, and mesoscale structure.
Samson Hagos   +3 more
wiley   +1 more source

On Regular Quaternary Hadamard Matrices

open access: yesJournal of Combinatorial Designs, Volume 34, Issue 5, Page 215-227, May 2026.
ABSTRACT Through the use of regularizing vectors, all regular quaternary Hadamard matrices of orders 10 and 18 have been successfully identified. Of these, two matrices of order 10 and 184 matrices of order 18 were found to have unbiased mates. Converting the quaternary Hadamard matrices of order 18 to real Hadamard matrices, the study uncovered that ...
Hadi Kharaghani   +2 more
wiley   +1 more source

Maximal codeword lengths in Huffman codes [PDF]

open access: yes
The following question about Huffman coding, which is an important technique for compressing data from a discrete source, is considered. If p is the smallest source probability, how long, in terms of p, can the longest Huffman codeword be?
Abu-Mostafa, Y. S., Mceliece, R. J.
core   +1 more source

Evaluation and Sensitivity of the Canadian Regional Climate Model for Hourly Precipitation in the Northeastern United States

open access: yesEarth and Space Science, Volume 13, Issue 5, May 2026.
Abstract Convection‐permitting regional climate models (CP‐RCMs) often outperform coarser‐resolution models in simulating precipitation, but assessing their accuracy across resolutions and configurations remains challenging. This study evaluates the performance and sensitivity of different configurations of the sixth version of the Canadian Regional ...
Kim Lahaie   +3 more
wiley   +1 more source

Partial Encryption of Entropy-Coded Video Compression Using Coupled Chaotic Maps

open access: yesEntropy, 2014
Due to pervasive communication infrastructures, a plethora of enabling technologies is being developed over mobile and wired networks. Among these, video streaming services over IP are the most challenging in terms of quality, real-time requirements and ...
Fadi Almasalha   +2 more
doaj   +1 more source

Entrainment of Muddy Sediment From Immobile Gravel River Beds

open access: yesWater Resources Research, Volume 62, Issue 5, May 2026.
Abstract This study examines the transport of fine muddy sediment through a gravel‐bed reach. In such cases, mud is often conceptualized as a size fraction that interacts little with the bed (i.e., as washload). However, previous studies have shown that mud can deposit within gravel beds.
Brayden Schiller, Kyle Strom
wiley   +1 more source

A Data Compression Method for Wellbore Stability Monitoring Based on Deep Autoencoder

open access: yesSensors
The compression method for wellbore trajectory data is crucial for monitoring wellbore stability. However, classical methods like methods based on Huffman coding, compressed sensing, and Differential Pulse Code Modulation (DPCM) suffer from low real-time
Shan Song   +3 more
doaj   +1 more source

Functional Dissociation of Mismatch Negativity From Late Discriminative Negativity Across the Adult Lifespan

open access: yesEuropean Journal of Neuroscience, Volume 63, Issue 9, May 2026.
Mismatch negativity (MMN) and late discriminative negativity (LDN) were reliably elicited by pitch contour deviants across adulthood (18–86 years). MMN amplitude declined with age and predicted subsequent auditory memory precision, whereas LDN amplitude remained largely stable and showed no relationship with memory performance.
Ricky Chow   +3 more
wiley   +1 more source

HUFFMAN CODING AS A NONLINEAR DYNAMICAL SYSTEM [PDF]

open access: yesInternational Journal of Bifurcation and Chaos, 2011
In this paper, source coding or data compression is viewed as a measurement problem. Given a measurement device with fewer states than the observable of a stochastic source, how can one capture their essential information? We propose modeling stochastic sources as piecewise-linear discrete chaotic dynamical systems known as Generalized Luröth Series ...
openaire   +2 more sources

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