Results 41 to 50 of about 9,065 (122)

Robust Inverse Material Design With Physical Guarantees Using the Voigt‐Reuss Net

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 7, 15 April 2026.
ABSTRACT We apply the Voigt‐Reuss net, a spectrally normalized neural surrogate introduced in [38], for forward and inverse mechanical homogenization with a key guarantee that all predicted effective stiffness tensors satisfy Voigt‐Reuss bounds in the Löwner sense during training, inference, and gradient‐driven optimization.
Sanath Keshav, Felix Fritzen
wiley   +1 more source

Distribution of Values of Quadratic Forms at Integral Points

open access: yes, 2019
The number of lattice points in $d$-dimensional hyperbolic or elliptic shells $\{m ...
Buterus, Paul   +3 more
core   +1 more source

Toward Genuine Efficiency and Cluster Robustness of Preconditioned CG‐Like Eigensolvers

open access: yesNumerical Linear Algebra with Applications, Volume 33, Issue 2, April 2026.
ABSTRACT The locally optimal block preconditioned conjugate gradient (LOBPCG) method is a popular solver for large and sparse Hermitian eigenvalue problems. However, recently proposed alternatives for its single‐vector version LOPCG indicate certain problematic cases with less accurate preconditioners and clustered target eigenvalues.
Ming Zhou, Klaus Neymeyr
wiley   +1 more source

The tenth order mock theta functions revisited

open access: yes, 2009
In this paper we consider the first four of the eight identities between the tenth order mock theta functions, found in Ramanujan's lost notebook. These were originally proved by Choi.
Zwegers, Sander
core   +1 more source

Joint Bayesian Nowcasting of Severe Acute Respiratory Illness and COVID‐19 Positives in Brazil

open access: yesStatistics in Medicine, Volume 45, Issue 8-9, April 2026.
ABSTRACT Surveillance of severe acute respiratory illness (SARI) in Brazil provides an early warning system for respiratory outbreaks, including COVID‐19, and statistical nowcasting methods are vital for correcting long and variable reporting delays that would otherwise hinder timely decision‐making. Coherent joint prediction of SARI and COVID‐positive
Alba Halliday   +3 more
wiley   +1 more source

Flexible and Interpretable Modeling of Overlapping Exposure Risks in Self‐Controlled Case Series Analysis

open access: yesStatistics in Medicine, Volume 45, Issue 8-9, April 2026.
ABSTRACT The self‐controlled case series (SCCS) method is frequently employed to explore the relationship between transient exposures and subsequent health events, utilizing data from individuals who have experienced the event of interest. Conventional spline‐based SCCS models typically do not account for overlapping exposure periods and fail to ...
Xuezhixing Zhang   +2 more
wiley   +1 more source

On the dual nature of partial theta functions and Appell-Lerch sums

open access: yes, 2014
In recent work, Hickerson and the author demonstrated that it is useful to think of Appell--Lerch sums as partial theta functions. This notion can be used to relate identities involving partial theta functions with identities involving Appell--Lerch sums.
Andrews   +28 more
core   +1 more source

Homicide, punishment and deterrence in Australia

open access: yesSouthern Economic Journal, Volume 92, Issue 4, Page 1156-1188, April 2026.
Abstract Australian data encompassing 1910–2022, by year and state, were analyzed to estimate the effect of capital punishment on homicide rates. Our estimates showed that capital punishment had a negative and significant effect on homicides. In some specifications, the estimates implied that an execution was associated with 12.68 fewer homicides ...
Hugh Farrell, Vincent O'Sullivan
wiley   +1 more source

Can a Lattice String Have a Vanishing Cosmological Constant?

open access: yes, 1992
We prove that a class of one-loop partition functions found by Dienes, giving rise to a vanishing cosmological constant to one-loop, cannot be realized by a consistent lattice string.
A.N. Schellekens   +22 more
core   +1 more source

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