Results 101 to 110 of about 260,355 (166)
Magnetic Resonance in Medicine, EarlyView.Abstract Purpose In MR electrical properties tomography (EPT), conductivity and permittivity are reconstructed from MR measurements. However, depending on the reconstruction method, reconstructed electrical properties (EPs) show large variability in vivo, reducing confidence in the reconstructed values for clinical application in practice.
Thierry G. Meerbothe +5 more
wiley +1 more source
The effect of concomitant gradient fields on MRI with long readout radial‐based trajectories
Magnetic Resonance in Medicine, EarlyView.Abstract Purpose To demonstrate in theory and practice that concomitant gradient fields (CCGF) can produce substantial imaging artifacts in scans utilizing radial‐based trajectories and to provide strategies to mitigate these effects. Theory and Methods A framework was developed to relate concomitant gradient phase to local point‐spread‐function ...
Michael A. Malmberg +3 more
wiley +1 more source
Feasibility study of subject‐specific, brain specific‐absorption‐rate maps retrieved from MRI data
Magnetic Resonance in Medicine, EarlyView.Abstract Introduction Specific absorption rate (SAR) is crucial for monitoring radiofrequency power absorption during MRI. Although local SAR distribution is usually calculated through numerical simulations, they are impractical during exams, limiting real‐time patient‐specific SAR assessment.
Jessica A. Martinez +8 more
wiley +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Nonlinearity in parallel compliance can be exploited to improve the performance of locomotion systems in terms of (1) energy efficiency, (2) control robustness, and (3) gait optimality; that is, attaining energy efficiency across a set of motions. Thus far, the literature has investigated and validated only the first two benefits.
Rezvan Nasiri +3 more
wiley +1 more source
Parameterized Local Reduced Order Model of Stimulated Volume Evolution in Reservoirs
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT Real‐time simulation of large‐scale geomechanics problems, such as hydraulic dilation stimulation, is computationally expensive as they must span multiple spatial and temporal length scales, often including nonlinearities and thermo‐hydromechanical processes.
Saeed Hatefi Ardakani, Robert Gracie
wiley +1 more source
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT The stability analysis of a saturated soil slope subjected to seepage flow generated by rapid water level drawdown is investigated in this paper by means of the limit analysis kinematic approach. The analysis takes into account the inherent spatial variability of soil strength and permeability properties.
Mário Vargas Ceron +3 more
wiley +1 more source
Solving Large‐Scale Weapon Target Assignment Problems in Seconds Using Branch‐Price‐And‐Cut
Naval Research Logistics (NRL), EarlyView.ABSTRACT This paper proposes a framework based on branch‐price‐and‐cut to solve the weapon target assignment (WTA) problem, a popular class of non‐linear assignment problems that has received significant attention over the past several decades. We first reformulate the WTA into a form amenable to column generation and then derive efficient algorithms ...
Dimitris Bertsimas, Alex Paskov
wiley +1 more source
Naval Research Logistics (NRL), EarlyView.ABSTRACT The COVID‐19 pandemic has reverberated across global industries, including the international container shipping industry, where freight rates have become highly volatile. However, shipping lines appeared to thrive, particularly during the pandemic's initial 2 years.
Shiyuan Zheng, Changmin Jiang
wiley +1 more source
An Exact Algorithm for the Hazardous Orienteering Problem
Networks, EarlyView.ABSTRACT The hazardous orienteering problem is the topic of this study. It is a variant of the well‐studied orienteering problem, where a vehicle, given a maximum mission time, has to select and visit customers out of a set of requests, aiming at maximizing the total profit associated with the customers selected. In the hazardous version of the problem
Roberto Montemanni, Derek H. Smith
wiley +1 more source