Results 181 to 190 of about 49,792,933 (254)

Development and validation of a digital biopsy model to predict microvascular invasion in hepatocellular carcinoma. [PDF]

Front Oncol
Birgin E, Nebelung H, Abdelhadi S, Rink JS, Froelich MF, Hetjens S, Rahbari M, Téoule P, Rasbach E, Reissfelder C, Weitz J, Schoenberg SO, Riediger C, Plodeck V, Rahbari NN.   +14 more
europepmc   +1 more source

Simultaneous Activity and Attenuation Estimation in TOF-PET With TV-Constrained Nonconvex Optimization. [PDF]

IEEE Trans Med Imaging
Ren Z, Sidky EY, Barber RF, Kao CM, Pan X.   +4 more
europepmc   +1 more source

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Sensitivity Analysis of Nonsmooth Power Control Systems With an Example of Wind Turbines

Communications in Nonlinear Science and Numerical Simulation, 2021
This paper focuses on dynamic sensitivities of nonsmooth power control systems. Recent advances in nonsmooth sensitivity theory are applicable to large-scale practical problems modeled as nonsmooth semi-explicit differential-algebraic equations (DAEs ...
Peter Stechlinski, Sameh A Eisa
exaly   +2 more sources

A Method for Numerical and Experimental Nonlinear Modal Analysis of Nonsmooth Systems

Mechanical Systems and Signal Processing, 2019
The development of nonlinear modal analysis so far has focused on structures with smooth nonlinearities. However, nonsmooth nonlinearities, which are, for instance, caused by contact interactions are highly relevant in practical applications.
Remco Ingmar Leine, Simon Peter
exaly   +2 more sources

Elements of Nonsmooth Analysis

, 2014
A differential construct that applies to nonsmooth functions is useful in general. The proximal supergradient admits a very complete calculus for upper semicontinuous functions and perfectly suits the nonsmooth \(\mathcal{L}_{2}\)-gain analysis to be developed in this chapter.
Y. Orlov, L. Aguilar
semanticscholar   +2 more sources

lements of Nonsmooth Analysis

, 2017
M. Sofonea, S. Migórski
semanticscholar   +2 more sources

The importance of a nonsmooth tumor margin and incomplete tumor capsule in predicting HCC microvascular invasion on preoperative imaging examination: a systematic review and meta-analysis.

Clinical imaging, 2020
OBJECTIVES Microvascular invasion (MVI) is a key factor affecting the prognosis of hepatocellular carcinoma (HCC). Preoperative imaging plays an important role in the diagnosis of HCC, treatment planning and treatment evaluation, but it is still ...
Ling Song, Jia-Wu Li, Yan Luo
semanticscholar   +1 more source

Analysis and Optimization of Nonsmooth Arches

SIAM Journal on Control and Optimization, 2002
It is our aim to present a new treatment for some classical models of arches and for their optimization. In particular, our approach allows us to study nonsmooth arches, while the standard assumptions from the literature require $W^{3, \infty}$-regularity for the parametric representation.
Sprekels, Jürgen, Ignat, Anca, Tiba, Dan   +2 more
openaire   +3 more sources

Drill-string vibration analysis considering an axial-torsional-lateral nonsmooth model

Journal of Sound and Vibration, 2019
Oil drilling operations is usually associated with drill-string severe vibration conditions that lead to an onerous and inefficient process. In order to avoid or minimize the impact of vibrations on operation conditions it is essential a deep dynamical ...
L. P. de Moraes, M. Savi
semanticscholar   +1 more source