Results 91 to 100 of about 156,630 (288)

Invariant Measure and Universality of the 2D Yang–Mills Langevin Dynamic

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We prove that the Yang–Mills (YM) measure for the trivial principal bundle over the two‐dimensional torus, with any connected, compact structure group, is invariant for the associated renormalised Langevin dynamic. Our argument relies on a combination of regularity structures, lattice gauge‐fixing and Bourgain's method for invariant measures ...
Ilya Chevyrev, Hao Shen
wiley   +1 more source

Jacobian establishment for“parallel + serial” hybrid robots based on end-effector screw describing coordinate

open access: yesJixie chuandong
ObjectiveHybrid robots that combine the advantages of serial/parallel robots have become one of the important research directions in the field of robots.
LI Wei, WANG Hui
doaj  

Jacobian matrix: a bridge between linear and nonlinear polynomial-only problems

open access: yes, 1999
By using the Hadamard matrix product concept, this paper introduces two generalized matrix formulation forms of numerical analogue of nonlinear differential operators. The SJT matrix-vector product approach is found to be a simple, efficient and accurate
Chen, W.
core  

Unit Tangent Vector Computation for Homotopy Curve Tracking on aHypercube [PDF]

open access: yes, 1989
Probability-one homotopy methods are a class of methods for solving nonlinear systems of equations that are globally convergent from an arbitrary starting point.
Allison, Donald C. S.   +3 more
core  

The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations

open access: yesDeep Underground Science and Engineering, EarlyView.
Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu   +3 more
wiley   +1 more source

Complex‐step derivative‐based extended Kalman filter for state estimation in twin rotor MIMO system

open access: yesIET Control Theory & Applications
This paper presents the design of a complex‐step extended Kalman filter (CS‐EKF) to estimate the states of the twin‐rotor MIMO system (TRMS) which is a non‐linear system.
İbrahim Mucuk, Ayhan Özdemir
doaj   +1 more source

A new implementation for online calculation of manipulator Jacobian.

open access: yesPLoS ONE, 2019
This paper describes a new implementation for calculating Jacobian and its time derivative for robot manipulators in real-time. The estimation of Jacobian is the key in the real-time implementation of kinematics and dynamics of complex planar or spatial ...
Pramod Chembrammel   +1 more
doaj   +1 more source

Matrix-Free Jacobian Chaining

open access: yes
arXiv admin note: substantial text overlap with arXiv:2003 ...
openaire   +2 more sources

The arithmetic Jacobian matrix and determinant

open access: yes, 2017
Validerad;2017;Nivå 2;2017-09-12 (andbra)
Haukkanen, Pentti   +3 more
openaire   +2 more sources

Syndrome‐specific and familial imaging traits in juvenile absence epilepsy

open access: yesEpilepsia, EarlyView.
Abstract Objective Juvenile absence epilepsy (JAE) is an idiopathic generalized epilepsy characterized by absences, generalized tonic–clonic seizures, and cognitive difficulties. In contrast to juvenile myoclonic epilepsy (JME), where distinct functional and structural brain alterations are well established, it remains unclear whether comparable ...
Fenglai Xiao   +15 more
wiley   +1 more source

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