Results 81 to 90 of about 6,636 (211)
Melnikov Method for a Class of Generalized Ziegler Pendulums
MathematicsThe Melnikov method is applied to a class of generalized Ziegler pendulums. We find an analytical form for the separatrix of the system in terms of Jacobian elliptic integrals, holding for a large class of initial conditions and parameters. By working in
Stefano Disca, Vincenzo Coscia
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Advanced Materials Technologies, EarlyView.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +8 more
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A degenerate elliptic equation for second order controllability of nonlinear systems
, 2019 arXiv admin note: text overlap with arXiv:1905 ...
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Liquid Metal Sensors for Soft Robots
Advanced Robotics Research, EarlyView.This review thoroughly reviews liquid metal sensors in soft robots. Their unique material properties like high conductivity and good biocompatibility are analyzed. Working principles are classified, and applications in environmental perception, motion detection, and human—robot interaction are introduced.
Qi Zhang +7 more
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Hard‐Magnetic Soft Millirobots in Underactuated Systems
Advanced Robotics Research, EarlyView.This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang +4 more
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Advanced Robotics Research, EarlyView.This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska +2 more
wiley +1 more source
Advanced Robotics Research, EarlyView.Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds +2 more
wiley +1 more source
Constructive Sobolev gradient preconditioning for semilinear elliptic systems
Electronic Journal of Differential Equations, 2004 We present a Sobolev gradient type preconditioning for iterative methods used in solving second order semilinear elliptic systems; the n-tuple of independent Laplacians acts as a preconditioning operator in Sobolev spaces.
Janos Karatson
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Second Order Elliptic Systems of Differential Equations [PDF]
Proceedings of the National Academy of Sciences, 1953 openaire +4 more sources
A semilinear second order elliptic system
, 1990 Summary: We consider an equation of the form \[ \begin{cases} Lu+\beta(u)\ni f(x,u) & \text{ in } \Omega; \\ u=0 & \text{ on } \partial\Omega, \end{cases} \] where \(\Omega\subset\mathbb{R}^ n(n\geq 1)\) is an open set with smooth boundary \(\partial\Omega\), \(L=\text{diag}(L_ 1,\dots,L_ N)\) \((N\geq 1)\) is a diagonal matrix of second order elliptic
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