Results 21 to 30 of about 668,534 (292)

Validation of a Mathematical Model for Green Algae (Raphidocelis Subcapitata) Growth and Implications for a Coupled Dynamical System with Daphnia Magna

open access: yesApplied Sciences, 2016
Toxicity testing in populations probes for responses in demographic variables to anthropogenic or natural chemical changes in the environment. Importantly, these tests are primarily performed on species in isolation of adjacent tropic levels in their ...
Michael Stemkovski   +3 more
doaj   +1 more source

On asymptotic dark energy in string theory

open access: yesJournal of High Energy Physics, 2023
We examine bounds on accelerated expansion in asymptotic regions of the moduli space in string theory compactifications to four spacetime dimensions. While there are conjectures that forbid or constrain accelerated expansion in such asymptotic regions ...
Sera Cremonini   +4 more
doaj   +1 more source

Asymptotic Spectral Measures, Quantum Mechanics, and E-theory

open access: yes, 2001
We study the relationship between POV-measures in quantum theory and asymptotic morphisms in the operator algebra E-theory of Connes-Higson. This is done by introducing the theory of "asymptotic" PV-measures and their integral correspondence with ...
Martinez, Diane, Trout, Jody
core   +4 more sources

Generalized Information Matrix Tests for Detecting Model Misspecification

open access: yesEconometrics, 2016
Generalized Information Matrix Tests (GIMTs) have recently been used for detecting the presence of misspecification in regression models in both randomized controlled trials and observational studies.
Richard M. Golden   +3 more
doaj   +1 more source

Asymptotic structure of perturbative series for $\tau$ lepton decay observables: $m_s^2$ corrections [PDF]

open access: yes, 1999
In a previous paper we performed an analysis of asymptotic structure of perturbation theory series for semileptonic $\tau$-lepton decays in massless limit. We extend our analysis to the Cabibbo suppressed $\Delta S=1$ decay modes of the $\tau$ lepton. In
Koerner, J. G.   +2 more
core   +2 more sources

Consequences of Model Misspecification for Maximum Likelihood Estimation with Missing Data

open access: yesEconometrics, 2019
Researchers are often faced with the challenge of developing statistical models with incomplete data. Exacerbating this situation is the possibility that either the researcher’s complete-data model or the model of the missing-data mechanism is ...
Richard M. Golden   +3 more
doaj   +1 more source

Asymptotic Theory of Quantum Channel Estimation

open access: yesPRX Quantum, 2021
The quantum Fisher information (QFI), as a function of quantum states, measures the amount of information that a quantum state carries about an unknown parameter.
Sisi Zhou, Liang Jiang
doaj   +1 more source

Non-perturbative tests for the Asymptotic Freedom in the $\mathcal{PT}% $-symmetric $(-\phi^{4})_{3+1}$ theory

open access: yes, 2010
In the literature, the asymptotic freedom property of the $(-\phi^{4})$ theory is always concluded from real-line calculations while the theory is known to be a non-real-line one. In this article, we test the existence of the asymptotic freedom in the $(-
Al-Thoyaib, Suleiman S.   +1 more
core   +1 more source

Dynamics of Dollard asymptotic variables. Asymptotic fields in Coulomb scattering [PDF]

open access: yes, 2016
Generalizing Dollard's strategy, we investigate the structure of the scattering theory associated to any large time reference dynamics $U_D(t)$ allowing for the existence of M{\o}ller operators.
Morchio, G., Strocchi, F.
core   +1 more source

Validating a 2-mode asymptotic expansion in computational bifurcation theory (Before introducing HDN for differential operation)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
For error-free computation of high-derivatives of mathematical functions used in engineering applications, hyper-dual numbers (HDN) are receiving much attention in computational mechanics.
Fumio FUJII   +3 more
doaj   +1 more source

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