Results 101 to 110 of about 649,170 (367)

Review of M(atrix)-Theory, Type IIB Matrix Model and Matrix String Theory [PDF]

open access: yesarXiv, 2017
A review of M-(atrix) theory (the BFFS matrix quantum mechanics), type IIB matrix model (the IKKT matrix model) and Matrix String Theory (the DVV matrix gauge theory) is presented.
arxiv  

On directional derivatives of trace functionals of the form $A\mapsto\Tr(Pf(A))$

open access: yes, 2018
Given a function $f:(0,\infty)\rightarrow\RR$ and a positive semidefinite $n\times n$ matrix $P$, one may define a trace functional on positive definite $n\times n$ matrices as $A\mapsto \Tr(Pf(A))$.
Girard, Mark W.
core   +1 more source

Sensorless Human–Robot Interaction: Real‐Time Estimation of Co‐Grasped Object Mass and Human Wrench for Compliant Interaction

open access: yesAdvanced Intelligent Systems, EarlyView.
To tackle the challenge of parameter estimation in dynamic human–robot interaction, this research proposes a novel method that integrates a disturbance observer with Kalman filtering. In contrast to conventional techniques, this approach facilitates the simultaneous real‐time estimation of human wrench and object parameters, offering significantly ...
Minghao Bai   +5 more
wiley   +1 more source

An Inversion-Free Method for Finding Positive Definite Solution of a Rational Matrix Equation

open access: yesThe Scientific World Journal, 2014
A new iterative scheme has been constructed for finding minimal solution of a rational matrix equation of the form X+A*X-1A=I. The new method is inversion-free per computing step.
Fazlollah Soleymani   +4 more
doaj   +1 more source

Multistable Physical Neural Networks

open access: yesAdvanced Intelligent Systems, EarlyView.
This article presents the integration of mechanical bistability into physical neural networks (PNNs), enabling memory retention and bridging computation with physical action. By mapping the equilibrium states of bistable, liquid‐filled chambers, it explores stability and introduces global and local training algorithms.
Ben‐Haim Eran   +3 more
wiley   +1 more source

Real‐Time Motion Generation for Robot Manipulators in Complex Dynamic Environments

open access: yesAdvanced Intelligent Systems, EarlyView.
A motion generation method for robot manipulators in complex dynamic environments is presented. The method integrates global motion planning with local obstacle avoidance, ensuring continuous movement toward dynamically measured target poses. An online distance calculation algorithm is developed, and a collision‐free motion generator is proposed that ...
Tianyu Zhang   +6 more
wiley   +1 more source

Novel Steganographic Method Based on Hermitian Positive Definite Matrix and Weighted Moore–Penrose Inverses

open access: yesApplied Sciences
In this paper, we describe the concept of a new data-hiding technique for steganography in RGB images where a secret message is embedded in the blue layer of specific bytes.
Selver Pepić   +6 more
doaj   +1 more source

Lyapunov matrix equation $A^HX+XA+C=O_r$ with $A$ a Jordan matrix [PDF]

open access: yesarXiv, 2018
A Lyapunov matrix equation can be converted, by using the Jordan decomposition theorem for matrices, into an equivalent Lyapunov matrix equation where the matrix is a Jordan matrix. The Lyapunov matrix equation with Jordan matrix can be reduced to a system of Sylvester-Lyapunov type matrix equations.
arxiv  

A proof for the positive definiteness of the Jaccard index matrix

open access: yesInternational Journal of Approximate Reasoning, 2013
In this paper we provide a proof for the positive definiteness of the Jaccard index matrix used as a weighting matrix in the Euclidean distance between belief functions defined in Jousselme et al. [13]. The idea of this proof relies on the decomposition of the matrix into an infinite sum of positive semidefinite matrices.
Mathieu Bouchard   +2 more
openaire   +2 more sources

A Study on Optimal Data Bandwidth of Recurrent Neural Network–Based Dynamics Model for Robot Manipulators

open access: yesAdvanced Intelligent Systems, EarlyView.
In this article, RNN–based learning method is proposed to achieve overall dynamic model of robot manipulators, which is established by optimal data‐bandwidth. The optimal data‐bandwidth is developed as a key behavior of the proposed method, which is designed on the loss function and its derivative.
Seungcheon Shin   +2 more
wiley   +1 more source

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