Results 51 to 60 of about 191,170 (252)

Consensus-Based Formation of Second-Order Multi-Agent Systems via Linear-Transformation-Based Partial Stability Approach

IEEE Access, 2019
The paper studies the time-invariant formation problem of second-order multi-agent systems under a time-invariant directed communication topology. Extensions of the consensus protocol are introduced in the formation control.
Xiaojun Qu, Yong Wan, Peng Zhou, Ligang Li   +3 more
doaj   +1 more source

The matrix realization of affine Jacobi varieties and the extended Lotka-Volterra lattice

, 2003
We study completely integrable Hamiltonian systems whose monodromy matrices are related to the representatives for the set of gauge equivalence classes $\boldsymbol{\mathcal{M}}_F$ of polynomial matrices.
Adler M, Adler M, Adler M, Beauville A, Donagi R, Dubrovin B A, Faddeev L D, Faddeev L D, Gekhtman M I, Griffiths P A, Griffiths P A, Hikami K, Hikami K, Inoue R, Krichever I M, Mumford D, Médan C, Rei Inoue, Reyman A G, Scott D R, Sklyanin E K, Sklyanin E K, Sklyanin E K, Smirnov F A, Smirnov F A Zeitlin V, Smirnov F A Zeitlin V, van Moerbeke P, Vanhaecke P   +27 more
core   +4 more sources

X-simple image eigencones of tropical matrices [PDF]

, 2016
We investigate max-algebraic (tropical) one-sided systems $A\otimes x=b$ where $b$ is an eigenvector and $x$ lies in an interval $X$. A matrix $A$ is said to have $X$-simple image eigencone associated with an eigenvalue $\lambda$, if any eigenvector $x ...
Plavka, Jan, Sergeev, Sergei
core   +2 more sources

Electric‐Current‐Assisted Nucleation of Zero‐Field Hopfion Rings

Advanced Materials, EarlyView.
This work reports a novel and efficient nucleation protocol for 3D localized topological magnetic solitons‐hopfion rings in chiral magnets using pulsed electric currents. By using Lorentz transmission electron microscopy and topological analysis, we report characteristic features and extraordinary stability of hopfion rings in zero or inverted external
Xiaowen Chen, Dongsheng Song, Filipp N. Rybakov, Nikolai S. Kiselev, Long Li, Wen Shi, Rui Wu, Xuewen Fu, Olle Eriksson, Stefan Blügel, Rafal E. Dunin‐Borkowski, Haifeng Du, Fengshan Zheng   +12 more
wiley   +1 more source

A Direct Elliptic Solver Based on Hierarchically Low-rank Schur Complements

, 2016
A parallel fast direct solver for rank-compressible block tridiagonal linear systems is presented. Algorithmic synergies between Cyclic Reduction and Hierarchical matrix arithmetic operations result in a solver with $O(N \log^2 N)$ arithmetic complexity ...
A. Aminfar, B.L. Buzbee, I. Ibragimov, J. Xia, J. Xia, J. Xia, L. Grasedyck, P. Amestoy, P. Swarztrauber, P.G. Schmitz, P.G. Schmitz, R.W. Hockney, S. Ambikasaran, S. Chandrasekaran   +13 more
core   +1 more source

Ultrafast Photocatalytic Wettability Switching in Substrate‐Interface Tailored Titanium Dioxide Thin Films

Advanced Materials Interfaces, EarlyView.
This study demonstrates ultrafast photocatalytic wettability switching in TiO2 thin films by tailoring substrate doping and interface oxides. Enhanced switching rates and hemiwicking effects are achieved through optimized material stacks and nanostructuring.
Rucha A. Deshpande, Jesper Navne, David C. B. Nielsen, Mathias Adelmark, Radu Malureanu, Ole Hansen, Rafael Taboryski   +6 more
wiley   +1 more source

Optimal adaptive leader-follower consensus of linear multi-agent systems: Known and unknown dynamics [PDF]

Journal of Artificial Intelligence and Data Mining, 2015
In this paper, the optimal adaptive leader-follower consensus of linear continuous time multi-agent systems is considered. The error dynamics of each player depends on its neighbors’ information.
F. Tatari, M. B. Naghibi-Sistani
doaj   +1 more source

Free Random Levy Variables and Financial Probabilities

, 2001
We suggest that Free Random Variables, represented here by large random matrices with spectral Levy disorder, may be relevant for several problems related to the modeling of financial systems.
Bercovici, Bouchaud, Cizeau, Feinberg, Feinberg, Gábor Papp, Ismail Zahed, Janik, Janik, Jerzy Jurkiewicz, Maciej A. Nowak, Mantegna, Voiculescu, Voiculescu, Zdzisław Burda, Zee   +15 more
core   +2 more sources

Stress‐Normalized Sensitivity as a Comparative Benchmark for Intrinsically Piezoresistive Nanocomposite Materials in Wearable Electronics

Advanced Materials Technologies, EarlyView.
A stress‐normalised sensitivity metric (S = G/Y) is introduced as a materials‐level benchmark for intrinsically piezoresistive nanocomposites. By decoupling electromechanical response (G) from stiffness (Y), the framework enables direct comparison across diverse systems and clarifies design trade‐offs for wearable sensors.
Conor S. Boland
wiley   +1 more source

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

Advanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun, Liang Zhang, Jianwen Zeng, Xuefeng Wang   +3 more
wiley   +1 more source