Results 41 to 50 of about 4,757 (89)
Certificates of positivity in the simplicial Bernstein basis.
, 2009 We study in the paper the positivity of real multivariate polynomials over a non-degenerate simplex V. We aim at obtaining certificates of positivity, {\it i.e.} algebraic identities certifying the positivity of a given polynomial on V, thus generalizing
Leroy, Richard
core +1 more source
European Journal of Pain, Volume 30, Issue 1, January 2026.ABSTRACT Background Musculoskeletal (MSK) pain and insomnia are interrelated and individually linked to reduced health‐related quality of life (HRQoL). This study aimed to enlighten the association of concurrent disabling MSK pain and insomnia with HRQoL among middle‐aged individuals.
Tuukka Korpela +6 more
wiley +1 more source
Random determinants, mixed volumes of ellipsoids, and zeros of Gaussian random fields [PDF]
, 2012 Consider a $d\times d$ matrix $M$ whose rows are independent centered non-degenerate Gaussian vectors $\xi_1,...,\xi_d$ with covariance matrices $\Sigma_1,...,\Sigma_d$. Denote by $\mathcal{E}_i$ the location-dispersion ellipsoid of $\xi_i:\mathcal{E}_i={
Kabluchko, Zakhar, Zaporozhets, Dmitry
core
Environmetrics, Volume 37, Issue 1, January 2026.ABSTRACT Compound events (CEs), commonly defined as the “combination of multiple drivers and/or hazards that contributes to societal or environmental risk”, often result in amplified impacts compared to individual hazards. In order to estimate the return period of bivariate CEs, a novel nonparametric approach employing bivariate Generalized Pareto ...
Grégoire Jacquemin +3 more
wiley +1 more source
Personality and Mental Health, Volume 20, Issue 1, February 2026.ABSTRACT Adverse childhood experiences (ACEs) are a well‐established risk factor for a wide range of mental health conditions, including personality disorder (PD). Yet, few studies have explored the relationship between ACEs and dimensional models of PD using the ICD‐11 framework.
Rachael C. Martin, Martin Sellbom
wiley +1 more source
Pharmaceutical Statistics, Volume 25, Issue 1, January/February 2026.ABSTRACT Bayesian predictive probabilities of success (PPoS) use interim trial data to calculate the probability of trial success. These quantities can be used to optimise trial size or to stop for futility. In this paper, we describe a simulation‐based approach to compute the PPoS for clinical trials with competing event data, for which no specific ...
Chiara Micoli +5 more
wiley +1 more source
Rational B\'ezier Curves Approximated by Bernstein-Jacobi Hybrid Polynomial Curves
, 2019 In this paper, we propose a linear method for $C^{(r,s)}$ approximation of rational B\'{e}zier curve with arbitrary degree polynomial curve. Based on weighted least-squares, the problem be converted to an approximation between two polynomial curves. Then
Shi, Mao
core
Density Matrix via Few Dominant Observables for the Ultrafast Non-Radiative Decay in Pyrazine. [PDF]
J Chem Theory Comput, 2023 Komarova K.
europepmc +1 more source
Conformally Covariant Bi-Differential Operators on a Simple Real Jordan Algebra
, 2017 For a simple real Jordan algebra $V,$ a family of bi-differential operators from $\mathcal{C}^\infty(V\times V)$ to $\mathcal{C}^\infty(V)$ is constructed.
Clerc, Jean-Louis +2 more
core
Typical curve with G1 constraints for curve completion. [PDF]
Vis Comput Ind Biomed Art, 2021 He C +5 more
europepmc +1 more source