Results 21 to 30 of about 81,093 (306)

Matrix Analytic Methods in Branching processes

open access: yes, 2008
info:eu-repo/semantics ...
Hautphenne, Sophie   +2 more
openaire   +5 more sources

An Analytic Center Cutting Plane Method to Determine Complete Positivity of a Matrix [PDF]

open access: yesINFORMS Journal on Computing, 2022
We propose an analytic center cutting plane method to determine whether a matrix is completely positive and return a cut that separates it from the completely positive cone if not. This was stated as an open (computational) problem by Berman et al.
Riley Badenbroek, Etienne de Klerk
openaire   +3 more sources

MoMA Algorithm: A Bottom-Up Modeling Procedure for a Modular System under Environmental Conditions

open access: yesMathematics, 2022
The functioning of complex systems relies on subsystems (modules) that in turn are composed of multiple units. In this paper, we focus on modular systems that might fail due to wear on their units or environmental conditions (shocks).
María Luz Gámiz   +3 more
doaj   +1 more source

Addressing Dependency in Meta-Analysis: A Companion to Assink and Wibbelink (2016) [PDF]

open access: yesTutorials in Quantitative Methods for Psychology
This research note elaborates on addressing dependency in effect size data and serves as a companion to our tutorial on fitting three-level meta-analytic models in R (Assink and Wibbelink, 2016). We provide a description of effect size and standard error
Assink, Mark, Wibbelink, Carlijn J. M.
doaj   +1 more source

Characteristic Analysis on UAV-MIMO Channel Based on Normalized Correlation Matrix

open access: yesThe Scientific World Journal, 2014
Based on the three-dimensional GBSBCM (geometrically based double bounce cylinder model) channel model of MIMO for unmanned aerial vehicle (UAV), the simple form of UAV space-time-frequency channel correlation function which includes the LOS, SPE, and ...
Gao Xi jun, Chen Zi li, Hu Yong Jiang
doaj   +1 more source

Two-Loop QCD Corrections to the Higgs Plus Three-parton Amplitudes with Top Mass Correction

open access: yesJournal of High Energy Physics, 2020
We obtain the two-loop QCD corrections to the Higgs plus three-parton amplitudes with dimension-seven operators in Higgs effective field theory. This provides the two-loop S-matrix elements for Higgs plus one-jet production at the LHC with top-mass ...
Qingjun Jin, Gang Yang
doaj   +1 more source

Sir epidemics with stages of infection

open access: yes, 2016
In this paper we are concerned with a stochastic model for the spread of an epidemic in a closed homogeneously mixing population when an infective can go through several stages of infection before being removed.
Lefèvre, Claude, Simon, Matthieu
core   +1 more source

Analytic response theory for the density matrix renormalization group [PDF]

open access: yes, 2009
We propose an analytic response theory for the density matrix renormalization group, whereby response properties correspond to analytic derivatives of density matrix renormalization group observables with respect to the applied perturbations. Both static
Garnet Kin-Lic Chan   +5 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Atom-Constrained Gridless DOA Refinement With Wirtinger Gradients

open access: yesIEEE Open Journal of Signal Processing
This paper proposes gridless sparse direction-of-arrival (DOA) refinement using gradient-based optimization. The objective function minimizes the fit between the sample covariance matrix (SCM) and a reconstructed covariance matrix.
Yongsung Park   +2 more
doaj   +1 more source

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