Results 81 to 90 of about 324,327 (273)

Surface structure feature matching algorithm for cardiac motion estimation

BMC Medical Informatics and Decision Making, 2017
Background Cardiac diseases represent the leading cause of sudden death worldwide. During the development of cardiac diseases, the left ventricle (LV) changes obviously in structure and function. LV motion estimation plays an important role for diagnosis
Zhengrui Zhang, Xuan Yang, Cong Tan, Wei Guo, Guoliang Chen   +4 more
doaj   +1 more source

Quasi-Newton’s method for multiobjective optimization

Journal of Computational and Applied Mathematics, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Bending Analysis of Thickness‐ and Shear‐Deformable Materially Imperfect Composite Shells With von Kármán‐Type Geometric Nonlinearities

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Geometrically nonlinear static analysis of materially imperfect composite doubly curved shells is investigated via the generalised differential quadrature method. The effects of both shear and thickness deformation are considered through a thickness‐ and shear‐deformable third‐order theory formulated in curvilinear coordinates, while the ...
Behrouz Karami, Mergen H. Ghayesh, Shahid Hussain, Marco Amabili   +3 more
wiley   +1 more source

Quasi-Newton methods for solving non-smooth multiobjective optimization

Journal of Mathematical Extension, 2014
In this paper, a quasi-Newton type algorithm for non-smooth multiobjective optimization is presented. In this algorithm, in every iteration a quadratic subproblem solves until a critical point is reached. Moreover, the global convergence of the algorithm
Najmeh Hoseini Monjezi
doaj  

Dynamic Modeling and Simulation of Morphing Wing Aircraft Considering Rigid‐Elastic Coupling Effects

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT During the morphing process, the dynamic modeling of the morphing wing aircraft presents the characteristics of rigid‐elastic coupling effects, moving boundaries, and low computational efficiency. Meanwhile, parameters such as aerodynamic forces/moments, center of pressure, center of mass, and moment of inertia would also change significantly,
Xu Zha, Boran Qiao, Yingpeng Zhuo, Chengze Zhao, Yuchen Yang, Lixin Guan   +5 more
wiley   +1 more source

A pilot variational coupled reanalysis based on the CESAM climate model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Variational data assimilation of in‐situ and satellite ocean data and reanalysis atmospheric data into an intermediate complexity Earth system model is possible by adjusting the surface fluxes and internal model parameters. This pilot application requires nearly complete information on the atmospheric state for synchronization.
Armin Köhl, Iuliia Polkova, Guokun Lyu, Frank Lunkeit, Abhirup Banerjee, Silke Schubert, Detlef Stammer   +6 more
wiley   +1 more source

On the high convergence orders of the Newton-GMBACK methods

Journal of Numerical Analysis and Approximation Theory, 1999
The high convergence orders of the Newton-GMBACK methods can be characterized applying three different existing results. In this note we show by some direct computations that these characterizations are equivalent.
Emil Cătinaş
doaj   +2 more sources

Attitude Estimation Fusing Quasi-Newton and Cubature Kalman Filtering for Inertial Navigation System Aided With Magnetic Sensors

IEEE Access, 2018
In the complex underwater environment, the performance of microelectro-mechanical system sensors is degraded sharply and the errors will become much larger.
Haoqian Huang, Jun Zhou, Jun Zhang, Yuan Yang, Rui Song, Jianfeng Chen, Jiajin Zhang   +6 more
doaj   +1 more source

Sonified Signals From a Compact FT‐ICR Instrument: A Feasibility Study. I—Data Mapping to an Equal‐Tempered Chromatic Scale

Rapid Communications in Mass Spectrometry, EarlyView.
ABSTRACT Rationale Ions trapped within a Penning cell (ICR) travel periodic orbits whose frequencies are dependent on their mass‐to‐charge ratio and the value of the magnetic field passing through the trap. Fourier transformation (FT‐ICR) decomposes the signal induced in the detection circuit by the rotation of the ions in the cell after the ...
Patrick Arpino, Michel Heninger
wiley   +1 more source

A New Sparse Quasi-Newton Update Method

Sultan Qaboos University Journal for Science [SQUJS], 2012
Based on the idea of maximum determinant positive definite matrix completion, Yamashita proposed a sparse quasi-Newton update, called MCQN, for unconstrained optimization problems with sparse Hessian structures. Such an MCQN update keeps the sparsity structure of the Hessian while relaxing the secant condition.
Minghou Cheng, Yu‐Hong Dai, Rui Diao
openaire   +2 more sources