Results 141 to 150 of about 18,549 (299)
Iso-spectral operators: Some model examples with discontinuous coefficients
, 1988 Some explicit examples are presented of operators with different discontinuous coefficient functions which possess eigenvalue spectra identical to each other and to the corresponding operator with continuous coefficients.
Gottlieb, H.P.W, Gottlieb H.P.W.
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Efficient and Robust Standing Postures of Quadruped Robots
Advanced Robotics Research, EarlyView.A calibrated static framework estimates load, optimizes torques, and adapts posture so quadruped robots stand efficiently and robustly under external payloads, achieving up to 50% lower torque demand. Inspired by the natural posture adjustments of animals under external loading, this article presents an optimization‐based framework for minimizing joint
Mohamad Kanaan +5 more
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W^{2,p}-regularity for a class of elliptic second order equations with discontinuous coefficients
Le Matematiche, 1992 We prove a well-posedness result in the intersection class of W2,p with W01,p for the Dirichlet problem (*) below. We assume L to be an elliptic second order operator with discontinuous coefficients and lower order terms.
Carmela Vitanza
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Composite finite elements for elliptic boundary value problems with discontinuous coefficients
, 2008 In this paper, we will introduce composite finite elements for solving elliptic boundary value problems with discontinuous coefficients. The focus is on problems where the geometry of the interfaces between the smooth regions of the coefficients is very ...
S. A. Sauter, R. Warnke
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Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement
Advanced Science, EarlyView.The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang +7 more
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Advanced Science, EarlyView.Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel +3 more
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Advanced Science, EarlyView.ABSTRACT Self‐healing materials represent a paradigm shift in designing functional biomedical devices for drug delivery, tissue regeneration, and 3D bioprinting. However, their clinical translation remains limited by challenges such as insufficient mechanical strength, potential cytotoxicity from chemical modifications, and complex activation ...
Ganjun Feng +15 more
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Advanced Science, EarlyView.This study developed a double‐network hydrogel with piezoelectric properties, exhibiting excellent antibacterial activity and promoting fibroblast migration, angiogenesis, and lymphangiogenesis through piezoelectric stimulation, thereby accelerating the healing of infected chronic wounds.
Xiang Li +7 more
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Parabolic equations with VMO coefficients in Morrey spaces
Electronic Journal of Differential Equations, 2001 Global regularity in Morrey spaces is derived for the regular oblique derivative for linear uniformly parabolic operators. The principal coefficients of the operator are supposed to be discontinuous, belonging to Sarason's class of functions with ...
Lubomira G. Softova
doaj
, 1997 Estimation of coefficients of partial differential equations is ill-posed. Output-least-squares method is often used in practice. Convergence of the commonly used minimization algorithms for the inverse problem is often very slow.
Chan, Tony F., Tai, Xue-cheng
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