Results 161 to 170 of about 15,953 (268)

frailtypack : An R Package for the Analysis of Correlated Survival Data with Frailty Models Using Penalized Likelihood Estimation or Parametrical Estimation

Journal of Statistical Software, 2012
Frailty models are very useful for analysing correlated survival data, when observations are clustered into groups or for recurrent events. The aim of this article is to present the new version of anR package called frailtypack.
Virginie Rondeau, Yassin Mazroui, Juan R. Gonzalez   +2 more
doaj  

Automated Coregistered Segmentation for Volumetric Analysis of Multiparametric Renal MRI

Magnetic Resonance in Medicine, Volume 95, Issue 6, Page 3519-3535, June 2026.
ABSTRACT Purpose This study aims to develop and evaluate a fully automated deep learning‐driven postprocessing pipeline for multiparametric renal MRI, enabling accurate kidney alignment, segmentation, and quantitative feature extraction within a single efficient workflow. Methods Our method has three main stages.
Aya Ghoul, Cecilia Liang, Isabelle Loster, Lavanya Umapathy, Bernd Kühn, Petros Martirosian, Ferdinand Seith, Sergios Gatidis, Thomas Küstner   +8 more
wiley   +1 more source

S-estimation for penalized regression splines

, 2008
This paper is about S-estimation for penalized regression splines. Penalized regression splines are one of the currently most used methods for smoothing noisy data. The estimation method used for fitting such a penalized regression spline model is mostly based on least squares methods, which are known to be sensitive to outlying observations.
Tharmaratnam, Kukatharmini, Claeskens, Gerda, Croux, Christophe, Salibian-Barrera, Matias   +3 more
openaire   +1 more source

Stereoscopic Serpentine Channel‐Based Cold Plate Design for Enhanced Liquid Cooling of EV Batteries

Battery Energy, Volume 5, Issue 3, May 2026.
The Graphical Abstract shows a 16‐cell battery pack used in the numerical study, along with temperature contours on the surface of coolant flow channels and a transient average surface temperature plot. A serpentine base plate and a stereoscopic serpentine cold plate are investigated, and the results are compared.
Anoop Kanjirakat, Rahul Saldanha, Pramod G. K., Dolfred Vijay Fernandes   +3 more
wiley   +1 more source

Conservation of Neuron‐Astrocyte Correlated Activity in Developing Sensory Pathways

Glia, Volume 74, Issue 5, May 2026.
Astrocytes and neurons in the superior colliculus exhibit spatiotemporal correlated activity before eye opening. Each neuronal wave is followed by a calcium wave in astrocytes. Spillover of glutamate activates mGluR5 and mGluR3 in astrocytes. ABSTRACT Neurons in developing sensory organs exhibit prolonged burst firing before the onset of sensory ...
Vered Kellner, Patrick Parker, Dongeun Heo, Xuelong Mi, Mikhail Coen, Guoqiang Yu, Gesine Saher, Loyal A. Goff, Dwight E. Bergles   +8 more
wiley   +1 more source

Penalized spline models and applications [PDF]

Penalized spline regression models are a popular statistical tool for curve fitting\ud problems due to their flexibility and computational efficiency. In particular, penalized\ud cubic spline functions have received a great deal of attention.
openaire  

Using high‐resolution imagery to map Scots pine regeneration in the Scottish uplands

Ecological Solutions and Evidence, Volume 7, Issue 2, April–June 2026.
This study utilizes high‐resolution imagery to map over 90,000 naturally regenerating Scots pines across a 3360‐ha area in the Scottish Uplands. Our approach demonstrates that remote sensing can accurately quantify landscape‐scale forest expansion, identifying nearly 85% of saplings over 2 m tall.
Ben Damien Spracklen, Dominick Vincent Spracklen   +1 more
wiley   +1 more source

Competition Between Liquid‐Liquid Crystalline Phase Separation (LLCPS) and Liquid‐Liquid Phase Separation (LLPS) in Amyloid Fibril Colloidal Systems

Advanced Science, Volume 13, Issue 19, 2 April 2026.
This study shows that amyloid fibrils form nematic condensates via liquid–liquid crystalline phase separation (LLCPS). With increasing pH, this transition shifts toward disordered condensates formed through liquid–liquid phase separation (LLPS), in which birefringence with lack of a coherent nematic field symmetry originates from enthalpic fibril ...
Milad Radiom, Raffaele Mezzenga
wiley   +1 more source

Significance of Early Proton Beam Therapy Initiation in Achieving Complete Response in Pediatric Medulloblastoma: A Retrospective Study

Cancer Medicine, Volume 15, Issue 4, April 2026.
ABSTRACT Introduction Proton beam therapy (PBT) has proven to be highly effective in treating pediatric medulloblastoma, offering both excellent therapeutic outcomes and reduced side effects. However, factors influencing tumor response following PBT remain poorly defined, including the optimal interval time between surgery and PBT initiation (ISP ...
Zhipeng Shen, Zhuo Hou, Wei Han, Yi Zhang, Weiling Zhang, Shuihua Wu, Jianfeng Liang, Chen Jiang, Zishen Wang, Wei Wang, Shuyan Zhang, Hideyuki Sakurai, Shosei Shimizu (Qingshui Xiangxing)   +12 more
wiley   +1 more source

Herbarium specimens reveal drivers of Arctic shrub growth

New Phytologist, EarlyView.
Natalie Iwanycki Ahlstrand, Zoe A. Panchen, Anne D. Bjorkman, James D. M. Speed   +3 more
wiley   +1 more source