Results 11 to 20 of about 64,365 (235)

Matrix elements of four-quark operators and \Delta L=2 hyperon decays [PDF]

open access: yes, 2013
The study of neutrinoless double beta decays of nuclei and hyperons require the calculation of hadronic matrix elements of local four-quark operators that change the total charge by two units \Delta Q=2 .
Barbero, C.   +3 more
core   +2 more sources

Attentional factorization machine with review-based user–item interaction for recommendation

open access: yesScientific Reports, 2023
In recommender systems, user reviews on items contain rich semantic information, which can express users’ preferences and item features. However, existing review-based recommendation methods either use the static word vector model or cannot effectively ...
Zheng Li, Di Jin, Ke Yuan
doaj   +1 more source

GAIN: A Gated Adaptive Feature Interaction Network for Click-Through Rate Prediction

open access: yesSensors, 2022
CTR (Click-Through Rate) prediction has attracted more and more attention from academia and industry for its significant contribution to revenue. In the last decade, learning feature interactions have become a mainstream research direction, and dozens of
Yaoxun Liu, Liangli Ma, Muyuan Wang
doaj   +1 more source

Reduction of Outdoor and Indoor PM2.5 Source Contributions via Portable Air Filtration Systems in a Senior Residential Facility in Detroit, Michigan

open access: yesToxics, 2023
Background: The Reducing Air Pollution in Detroit Intervention Study (RAPIDS) was designed to evaluate cardiovascular health benefits and personal fine particulate matter (particulate matter < 2.5 μm in diameter, PM2.5) exposure reductions via portable ...
Zachary M. Klaver   +6 more
doaj   +1 more source

An analogue in certain unique factorization domains of the Euclid-Euler theorem on perfect numbers

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
We show that there exists a natural extention of the sum of divisors function to all unique factorization domains F having a finite number of units such that if a perfect number in F is defined to be an integer η whose proper divisors sum to η, then the ...
Wayne L. McDaniel
doaj   +1 more source

The two faces of T-branes

open access: yesJournal of High Energy Physics, 2019
We establish a brane-brane duality connecting T-branes to collections of ordinary D-branes. T-branes are intrinsically non-Abelian brane configurations with worldvolume flux, whereas their duals consist of Abelian brane systems that encode the T-brane ...
Iosif Bena   +3 more
doaj   +1 more source

Taking advantage of hybrid systems for sparse direct solvers via task-based runtimes [PDF]

open access: yes, 2014
The ongoing hardware evolution exhibits an escalation in the number, as well as in the heterogeneity, of computing resources. The pressure to maintain reasonable levels of performance and portability forces application developers to leave the traditional
Bosilca, George   +4 more
core   +6 more sources

GPU Parallelization Nested Decomposition Method for Solving Large Linear Systems in Reservoir Numerical Simulation

open access: yesEarth Sciences Research Journal, 2019
This paper designs a highly parallel Nested Factorization (NF) to solve large linear equations generated in reservoir numerical simulation problems. The NF method is a traditional linear solution preprocessing method for reservoir numerical simulation ...
Xin Shi, Yuan Di
doaj   +1 more source

Receptor modelling of both particle composition and size distribution from a background site in London, UK – a two-step approach [PDF]

open access: yesAtmospheric Chemistry and Physics, 2019
Some air pollution datasets contain multiple variables with a range of measurement units, and combined analysis using positive matrix factorization (PMF) can be problematic but can offer benefits through the greater information content.
D. C. S. Beddows   +2 more
doaj   +1 more source

Refined Factorizations of Solvable Potentials [PDF]

open access: yes, 1999
A generalization of the factorization technique is shown to be a powerful algebraic tool to discover further properties of a class of integrable systems in Quantum Mechanics.
Alhassid Y   +17 more
core   +2 more sources

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