Results 131 to 140 of about 3,735 (290)

A problem with nonlocal conditions for partial differential equations with constant coefficients [PDF]

, 2010
O. D. Vlasii
openalex   +1 more source

Fast 3D UTE in vivo T1 and T2*$$ {\mathrm{T}}_2^{\ast } $$ mapping of fast relaxing knee tissues at 3 T

Magnetic Resonance in Medicine, EarlyView.
Abstract Purpose UTE MR imaging captures quantitative signals in fast‐relaxing tissues, enabling anatomical visualization and quantitative assessment of T1 and T2*$$ {\mathrm{T}}_2^{\ast } $$ relaxation times. However, the clinical application of quantitative UTE MRI is limited by long acquisition times.
Maik Rothe, Selina Riedel, Anne Slawig, Andreas Deistung, Klaus Bohndorf, Richard Brill, Walter A. Wohlgemuth, Alexander Gussew   +7 more
wiley   +1 more source

Denoising Low‐Power CEST Imaging Using a Deep Learning Approach With a Dual‐Power Feature Preparation Strategy

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose: Low‐power (LP) chemical exchange saturation transfer (CEST) Z‐spectra have significantly reduced confounding effects and enhanced peak resolvability, thereby improving the observation and quantification of various CEST effects. However, LP Z‐spectra suffer greatly from reduced contrast‐to‐noise ratio (CNR).
Yashwant Kurmi, Malvika Viswanathan, Leqi Yin, You Chen, Xiaoyu Jiang, Junzhong Xu, Zhongliang Zu   +6 more
wiley   +1 more source

Experimental Modal Analysis‐Driven Gaussian Process Regression Modeling of Rectangular Steel Beams With Various Hole Geometries

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Understanding the dynamic behavior of structural components is crucial for optimizing performance and ensuring structural integrity. This study presents a new method that combines a systematic experimental investigation of four distinct hole geometries (circular, square, compact rectangular, and long rectangular) with varying hole counts, all ...
Amir Hossein Rabiee, Majid Rajaei, Mohammad Hossein Mahdavi Nasab, Parsa Shafiei   +3 more
wiley   +1 more source

Abstract fractional integro-differential equations involving nonlocal initial conditions in α-norm [PDF]

, 2011
Rong-Nian Wang, Jun Liu, De-Han Chen
openalex   +1 more source

Numerical Modeling of the Recession and Closure of Planar Hydraulic Fractures: Contact‐Based Versus Asymptotic‐Informed Schemes

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT We compare two algorithms to simulate the propagation, arrest, recession, and closure of a planar hydraulic fracture, focusing on their ability to capture the physical processes governing fracture recession and closure. The first algorithm is based on a fixed grid with contact detection during recession, while the second is based on a moving ...
Mohsen Talebkeikhah, Andreas Möri, Anthony Peirce, Emmanuel Detournay, Brice Lecampion   +4 more
wiley   +1 more source

Generalized, Master and Nonlocal Symmetries of Certain Deformed Nonlinear Partial Differential Equations [PDF]

, 2011
R. Sahadevan, L. Nalinidevi
openalex   +1 more source

Advanced Modeling of Thermo‐Mechanical Behavior in Tetrachiral Core Sandwich Nanoplates Using Non‐Local Higher‐Order Theory

Natural Sciences, EarlyView.
The study presented investigates the thermo‐mechanical behavior of a sandwich structure with a tetrachiral‐shaped auxetic core. The geometric configuration, unit cell architecture, and the influence of the material length scale on the effective stiffness under temperature variation are illustrated.
Mustafa Buğday
wiley   +1 more source

Impulsive differential equations with nonlocal conditionsin general Banach spaces [PDF]

, 2012
Lanping Zhu, Qixiang Dong, Gang Li
openalex   +1 more source

A Critical Review of Pole Clustering Techniques: Common Pitfalls, Extension to MIMO and New Enhanced Variant of the Cuckoo Search Algorithm

Optimal Control Applications and Methods, EarlyView.
Enhanced Cuckoo Search for Model Order Reduction ABSTRACT This article presents a critical review of classical and modern pole clustering techniques for model order reduction in high‐order systems. It highlights key limitations and common pitfalls encountered in traditional approaches, especially when extended to Multi‐Input Multi‐Output (MIMO) systems.
Kamel Ben Slimane, Zied Tmar, Mongi Besbes   +2 more
wiley   +1 more source