Results 91 to 100 of about 562,872 (260)

Dynamics Modeling of Robot Manipulators Based on Deep Lagrangian Network and Torque Separation Technique

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In recent years, learning robot manipulator dynamics with deep networks has been extensively studied, as it avoids deriving the analytical expression of the robot dynamics equations. In particular, deep Lagrangian networks that incorporate the prior knowledge of Lagrangian mechanics into the deep networks have shown prominent advantages in ...
Xianglong Liang, Tianyu Gao, Zhikai Yao, Jianyong Yao   +3 more
wiley   +1 more source

Finite‐Time Disturbance Observer‐Based Nonlinear Robust Adaptive Control of Hydraulic Manipulator With Parameter Identification

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Hydraulic manipulators exhibit strong coupling, pronounced nonlinearities, and significant modeling uncertainties, which hinder high‐precision motion control. This paper proposes a finite‐time disturbance observer–based nonlinear robust adaptive control (RAC‐FTDO) framework enhanced by a physically consistent dynamic parameter identification ...
Tianyu Gao, Xianglong Liang, Wenxiang Deng, Jianyong Yao   +3 more
wiley   +1 more source

Nonnegative Combined Matrices

Journal of Applied Mathematics, 2014
The combined matrix of a nonsingular real matrix A is the Hadamard (entrywise) product A∘A-1T. It is well known that row (column) sums of combined matrices are constant and equal to one. Recently, some results on combined matrices of different classes of
Rafael Bru, Maria T. Gassó, Isabel Giménez, Máximo Santana   +3 more
doaj   +1 more source

Power Hadamard matrices

Discrete Mathematics, 2008
Generalizations of Hadamard matrices are surveyed, and yet another generalization is introduced, power Hadamard matrices, which overlaps the other generalizations discussed in the paper. A power Hadamard matrix is an \(n \times n\) matrix \(H\) with entries that are integer powers of \(x\) and that satisfies \(HH^* = nI\) modulo \(f(x)\), where \(f ...
Craigen, R., Woodford, R.
openaire   +1 more source

Enhancing Lipidomics With High‐Resolution Ion Mobility‐Mass Spectrometry

PROTEOMICS, EarlyView.
ABSTRACT Lipids, indispensable yet structurally intricate biomolecules, serve as critical regulators of cellular function and disease progression. Conventional lipidomics, constrained by limited resolution for isomeric and low‐abundance species, has been transformed by ion mobility‐mass spectrometry (IM‐MS).
Gaoyuan Lu, Shuling Xu, Penghsuan Huang, Lingjun Li   +3 more
wiley   +1 more source

Robust optimisation algorithm for the measurement matrix in compressed sensing

CAAI Transactions on Intelligence Technology, 2018
The measurement matrix which plays an important role in compressed sensing has got a lot of attention. However, the existing measurement matrices ignore the energy concentration characteristic of the natural images in the sparse domain, which can help to
Ying Zhou, Quansen Sun, Jixin Liu
doaj   +1 more source

A Novel Method for Generating a Fused Ventilation–Perfusion Map Using CT‐Derived Ventilation and FDG‐PET for Lung Functional Avoidance in Radiotherapy: A Feasibility Study

Precision Radiation Oncology, EarlyView.
This study retrospectively analyzed two types of respiratory phase CT and PET/CT images of 20 lung cancer patients. After DIR and functional grading, three lung function images were developed, and their correlations and differences were evaluated. Abstract Background Pulmonary ventilation–perfusion function plays a crucial role in both radiotherapy ...
Suyan Bi, Zhitao Dai, Xingru Sun, Wan Fatihah Binti Wan Sohaimi, Ahmad Lutfi Bin Yusoff   +4 more
wiley   +1 more source

Balanced generalized weighing matrices and their applications

Le Matematiche, 2004
Balanced generalized weighing matrices include well-known classical combinatorial objects such as Hadamard matrices and conference matrices; moreover, particular classes of BGW -matrices are equivalent to certain relative difference sets.
Dieter Jungnickel, H. Kharaghani
doaj  

NowPrecip 2: Precipitation nowcasting in the complex terrain of Switzerland. Part I: Methods

Quarterly Journal of the Royal Meteorological Society, EarlyView.
In this work we present the methods of the areal precipitation nowcasting system NowPrecip version 2. In this version a new methodology is introduced, which, although it shares philosophy and techniques with the original methodology of NowPrecip version 1, can be considered as distinct from that.
I. V. Sideris, A. Ntoumos, A. Berne, A. Hering, P. Juda, M. Boscacci, L. Clementi, U. Germann   +7 more
wiley   +1 more source

关于(k,h)-Fibonacci和(k,h)-Lucas数的r-循环矩阵的谱范数(On the spectral norms of r-circulant matrices with the (k,h)-Fibonacci and (k,h)-Lucas numbers)

Zhejiang Daxue xuebao. Lixue ban, 2014
Based on the general theory of matrix and some properties of (k,h)-Fibonacci and (k,h)-Lucas numbers，the upper and lower bounds for the spectral norms of r-circulant matrices and are given.
SHENShouqiang(沈守强), CENJianmiao(岑建苗)   +1 more
doaj   +1 more source