Results 41 to 50 of about 3,216,975 (364)

QNP_SHELL: A computerized tool for improving decision-making skills for nuclear power plant operators

open access: yesCogent Engineering, 2015
Decision-making in complex systems such as nuclear power plants (NPPs) is a difficult task at best. The safety and integrity of many such high-capital cost-intensive installations depend on the operator’s capability to correctly diagnose and take ...
Hassan Qudrat-Ullah
doaj   +1 more source

Logarithmic intertwining operators and vertex operators

open access: yes, 2006
This is the first in a series of papers where we study logarithmic intertwining operators for various vertex subalgebras of Heisenberg vertex operator algebras.
A. Bredthauer   +22 more
core   +3 more sources

Decomposition of nonlocal light-cone operators into harmonic operators of definite twist [PDF]

open access: yes, 1999
Bilocal light-ray operators which are Lorentz scalars, vectors or antisymmetric tensors, and which appear in various hard scattering QCD processes, are decomposed into operators of definite twist.
Ahmed   +44 more
core   +2 more sources

“Astropolitics” and weaponisation of space—Drawing past lessons to address space arms' escalation

open access: yesFrontiers in Political Science
Once a distant dream, today space is not only achievable, but has become the most important domain for both civilian and military purposes. Modern society and its economy have come to vitally rely on space assets for running crucial services, from ...
Francesco Ancona, Francesco Ancona
doaj   +1 more source

Geometry of differential operators, and odd Laplace operators

open access: yes, 2003
We solve the following problem: to describe in geometric terms all differential operators of the second order with a given principal symbol. Initially the operators act on scalar functions. Operator pencils acting on densities of arbitrary weights appear
Khudaverdian, Hovhannes M.   +1 more
core   +1 more source

Aleksandrov operators as smoothing operators [PDF]

open access: yesIllinois Journal of Mathematics, 2001
Let \(b\) be a holomorphic map from the open disc \(\mathbb{D}\) into itself. Then for each \(\alpha \in \mathbb{T}\) there exists a unique positive measure \(\tau_{\alpha}\) such that \[ \frac{1 - |b (z) |^2}{|\alpha - b (z) |^2} = \int_{\mathbb{T}} P_z (\xi) d \tau_{\alpha} (\xi) \] holds where \(P\) denotes the Poisson kernel. The author generalizes
openaire   +3 more sources

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

open access: yesPopulation Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi   +3 more
wiley   +1 more source

Outlines of presentations [PDF]

open access: yes, 1949
Illinois Custom Spray Operators' School Outline of Presentations. January 12-14, 1949.
Illinois Custom Spray Operators' School
core  

Duodenal Diverticulitis: To Operate or Not To Operate? [PDF]

open access: yesCureus, 2019
Duodenal diverticulum (DD) is a common incidental finding, which rarely causes complications. Perforation is one of the most feared and the least common complications. Surgery is the mainstay for complicated duodenal diverticulum, but with the advancement of medical treatment and intensive care, nonoperative management has been reported.
Suysen Hung Fong   +4 more
openaire   +3 more sources

Evolutionary interplay between viruses and R‐loops

open access: yesFEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi   +4 more
wiley   +1 more source

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