Results 221 to 230 of about 7,622 (261)

Distributional and Tail‐Dependent Perspectives in Economic Relationships: A Review of Quantile Regression Application

open access: yesJournal of Economic Surveys, Volume 40, Issue 3, Page 1637-1652, July 2026.
ABSTRACT There is an increased proportion of studies using quantile‐based regression methodology (QR) in economics. They offer a robust alternative to classical mean regressions, which can estimate non‐normal variables with distributional heterogeneity in the dependent variable.
Shajara Ul‐Durar   +4 more
wiley   +1 more source

Robust Bernoulli Mixture Models for Credit Portfolio Risk

open access: yesMathematical Finance, Volume 36, Issue 3, Page 528-543, July 2026.
ABSTRACT This paper presents comparison results and establishes risk bounds for credit portfolios within classes of Bernoulli mixture models, assuming conditionally independent defaults that are stochastically increasing in a common risk factor. We provide simple and interpretable conditions on conditional default probabilities that imply a comparison ...
Jonathan Ansari, Eva Lütkebohmert
wiley   +1 more source

Roots of polynomial sequences in root‐sparse regions

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 7, July 2026.
Abstract Given a family (qk)k$(q_k)_k$ of polynomials, we call an open set U$U$root‐sparse if the number of zeros of qk$q_k$ is locally uniformly bounded on U$U$. We study the interplay between the individual zeros of the polynomials qk$q_k$ and those of the m$m$th derivatives qk(m)$q_k^{(m)}$ in a root‐sparse open set U$U$, as k→∞$k\rightarrow \infty$.
Christian Henriksen   +2 more
wiley   +1 more source

Upscaling the Strength Domain of Heterogeneous Cohesive‐Frictional Materials via a General FFT‐Based Limit Analysis Approach

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 12, 30 June 2026.
ABSTRACT Limit analysis and yield design provide a well‐defined mathematical framework for upscaling the strength properties of heterogeneous materials. These techniques can be incorporated into an FFT‐based computational micromechanics framework to evaluate the strength of heterogeneous materials, based on images of their microstructure.
Elodie Donval, Matti Schneider
wiley   +1 more source

Two‐Colored Organic Photovoltaic Modules Enabled by Laser Annealing

open access: yesSolar RRL, Volume 10, Issue 12, 28 June 2026.
A CO2 laser is used to perform contactless and spatially resolved annealing of P3HT:O‐IDTBR solar cells and modules. The optical, electrical, and morphological properties of such laser‐annealed devices are investigated and compared to classical hotplate annealing. Finally, upscaling of the laser annealing process yields two‐colored OPV modules with 6.0%
Huan Shu   +7 more
wiley   +1 more source

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