Results 61 to 70 of about 2,956 (213)

Minimax AUC Fairness: Efficient Algorithm with Provable Convergence

open access: yes, 2023
The use of machine learning models in consequential decision making often exacerbates societal inequity, in particular yielding disparate impact on members of marginalized groups defined by race and gender.
Yang, Zhenhuan   +3 more
core   +1 more source

Covariance Estimation for Wide Data

open access: yesWIREs Computational Statistics, Volume 18, Issue 2, June 2026.
Covariance matrix estimation is fundamental to multivariate analysis, with applications spanning finance, genomics, climate science, and signal processing. This review synthesizes recent advances in high‐dimensional covariance estimation‐thresholding, linear and nonlinear shrinkage, graphical models, and random matrix theory‐under a unifying framework ...
Eran Raviv
wiley   +1 more source

Doppler-controlled microsurgical subinguinal varicocelectomy: a single centre experience

open access: yesВестник урологии
Introduction. Injury to the testicular artery during microsurgical subinguinal varicocelectomy (MSV) results in testicular atrophy in 20 – 40% of cases. The use of techniques that improve visualization of the testicular artery could increase the efficacy
A. I. Ryzhkov   +2 more
doaj   +1 more source

Transient Porosity During Fluid‐Mineral Interaction, Part 2: Reconstruction Using Generative AI

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract Quantifying fluid–rock interactions within the lithosphere is vital for both geological processes and applications such as CO2 ${\text{CO}}_{2}$ storage and geothermal energy development. Mineral replacement reactions generate transient pore networks that enhance fluid flow, yet many pores become isolated once reactions are completed, reducing
Hamed Amiri   +5 more
wiley   +1 more source

A Geometric Approach to Group Delay Network Synthesis [PDF]

open access: yesRadioengineering, 2016
All-pass networks with prescribed group delay are used for analog signal processing and equalisation of transmission channels. The state-of-the-art methods for synthesising quasi-arbitrary group delay functions using all-pass elements lack a theoretical ...
P. J. Osuch, T. Stander
doaj  

Standing waves of nonlinear Schrödinger systems with all attractive forces

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 6, June 2026.
Abstract Since the pioneering work of Lin and Wei on nonlinear Schrödinger systems of n$n$ components with interaction forces aij$a_{ij}$ between the i$i$‐th and j$j$‐th components for 1⩽i,j⩽n$1\leqslant i,j\leqslant n$, there have been numerous further developments in many directions. However, even in the simplest case where all interaction forces are
Jaeyoung Byeon
wiley   +1 more source

Semilinear elliptic problems on unbounded subsets of the Heisenberg group

open access: yesElectronic Journal of Differential Equations, 2001
In this paper we discuss the applications of an abstract version of concentration compactness to minimax problems. In particular, we prove the existence of solutions to semilinear elliptic problems on unbounded subsets of the Heisenberg group.
K. Tintarev
doaj  

DNase1 RS1053874 Polymorphism is Associated with Early Neurological Recovery through NET Modulation and with Long‐Term Survival in Ischemic Stroke: A Prospective Cohort Study

open access: yesAnnals of Neurology, Volume 99, Issue 5, Page 1210-1223, May 2026.
Objective Immunothrombosis contributes to ischemic stroke pathophysiology through neutrophil extracellular trap (NET) formation, which promotes thrombus stabilization and microvascular dysfunction. DNase1 is the principal endonuclease responsible for NET degradation.
B. Díaz‐Benito   +10 more
wiley   +1 more source

Existence of two nontrivial solutions for semilinear elliptic problems

open access: yesElectronic Journal of Differential Equations, 2006
This paper concerns the existence of multiple nontrivial solutions for some nonlinear problems. The first nontrivial solution is found using a minimax method, and the second by computing the Leray-Schauder index and the critical group near 0.
Abdel R. El Amrouss   +2 more
doaj  

Camrelizumab Plus Famitinib in Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma: A Phase 2 Study

open access: yesCancer Medicine, Volume 15, Issue 5, May 2026.
ABSTRACT Background To evaluate the outcomes of patients with refractory recurrent or metastatic head and neck squamous cell carcinoma (R/M HNSCC) treated with camrelizumab combined with famitinib following platinum‐based chemotherapy. Methods In this multicenter, phase 2, single‐arm trial, patients with R/M HNSCC who had documented progression after ...
Bei Xu   +8 more
wiley   +1 more source

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