A5102719455- Advanced Numerical Methods in Computational Mathematics
- Numerical methods in engineering
- Electromagnetic Simulation and Numerical Methods
- VLSI and Analog Circuit Testing
- Advanced Battery Technologies Research
- Advanced Mathematical Modeling in Engineering
- Advancements in Photolithography Techniques
- Industrial Vision Systems and Defect Detection
- Advanced Algorithms and Applications
- VLSI and FPGA Design Techniques
- Image Processing Techniques and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- Electric and Hybrid Vehicle Technologies
- Advanced Sensor and Control Systems
- Laser-Matter Interactions and Applications
- Advanced Vision and Imaging
- Computational Fluid Dynamics and Aerodynamics
- Spectroscopy and Quantum Chemical Studies
- Fault Detection and Control Systems
- Model Reduction and Neural Networks
- Advanced Measurement and Detection Methods
- Differential Equations and Numerical Methods
- Power Systems and Technologies
- Image Enhancement Techniques
- Industrial Technology and Control Systems
Xidian University
2006-2024
U.S. National Science Foundation
2014-2024
Army Medical University
2024
East China Normal University
2024
China Railway Corporation
2023
Liaoning University
2010-2022
Chinese Academy of Sciences
2021
Shanghai Institute of Ceramics
2021
Xi'an Jiaotong University
2006-2020
Division of Mathematical Sciences
2012-2018
A new weak Galerkin (WG) method is introduced and analyzed for the second order elliptic equation formulated as a system of two first linear equations. This method, called WG-MFEM, designed by using discontinuous piecewise polynomials on finite element partitions with arbitrary shape polygons/polyhedra. The WG-MFEM capable providing very accurate numerical approximations both primary flux variables. Allowing use approximating functions polygons/polyhedra makes highly flexible in practical...
This paper introduces a new weak Galerkin (WG) finite element method for second order elliptic equations on polytopal meshes. method, called WG-FEM, is designed by using discrete gradient operator applied to discontinuous piecewise polynomials partitions of arbitrary polytopes with certain shape regularity. The explains how the numerical schemes are and why they provide reliable approximations underlying partial differential equations. In particular, optimal error estimates established...
Active equalization is an efficient method to improve the performance of series-connected battery strings for electric vehicles. However, large-scale applications active are restricted by many factors, such as system cost, control complexity, and speed. In this paper, a unitized multiwinding transformer-based proposed. The forward converter flyback realized, simultaneously. principle used equalize cells in same subunit, while applied different subunits. Fewer metal-oxide-semiconductor...
The state of health (SOH) is essential for the safety and reliability lithium-ion batteries in different applications. Moreover, inconsistency battery cells packs inevitable. To determine SOH difference even more challenging without calculation each cell. solve problem, this article proposes a novel relative (rSOH) estimation method based on wavelet analysis, differences series-connected pack can be obtained. It should noted that no model needed method. accessible voltage cell sufficient to...
Abstract A newly developed weak Galerkin method is proposed to solve parabolic equations. This allows the usage of totally discontinuous functions in approximation space and preserves energy conservation law. Both continuous time finite element schemes are analyzed. Optimal‐order error estimates both H 1 L 2 norms established. Numerical tests performed reported. © 2013 Wiley Periodicals, Inc. Numer Methods Partial Differential Eq,
Abstract Microwave dielectric ceramics are considered to be one of the key materials for resonators (DR) and have very broad application prospects in fifth generation (5G) mobile communication system. Here we prepared high‐quality factor Y 3 Al 5 O 12 (YAG) transparent using high‐purity α‐Al 2 powders by cold isostatic pressing vacuum sintered with tungsten meshes as heating elements. Optimum relative permittivity ( ) ~10.53, quality Q × f (Q = 1/dielectric loss, resonant frequency) ~95, 270...
Battery performance will be dramatically reduced at low temperatures. To solve this problem, a hybrid self-heating method (HSHM) for batteries used temperature is proposed in article. The HSHM owns features of cost, high rise rate, energy loss, etc., which has the potential to widely heat batteries. physical and electric configuration designed, working principles are analyzed. heating strategy then introduced illustrate performance. validate method, experimental workbench established....
The conventional image-based visual servoing leads to image singularities that might cause control instabilities. To avoid this problem, in paper, the moments are used as features for servoing, where Jacobian matrix is full rank and upper triangular. Thus, it has maximal decoupled structure simplifies controller. general analytical form of interaction or considering camera parameters related any derived paper. As a controller, an optimal PD controller presented improve performance system...
A computational method based on a divergence-free H(div) approach is presented for the Stokes equations in this article. This designed to find velocity approximation an exact subspace of corresponding finite element space. That is, continuity equation strongly enforced priori and pressure eliminated from linear system calculation. strength that saddle-point problem reduced symmetric positive definite which basis functions are readily available. The resulting discrete can then be solved by...
Although many methods of moving object detection have been proposed, extraction is still the core in video surveillance. However, with complex scene real world, false detection, missed and deficiencies resulting from cavities inside body exist. In order to solve problem incomplete for objects, a new method combined an improved frame-difference Gaussian mixture background subtraction proposed this paper. To make more complete accurate, image repair morphological processing techniques which...
A gradient recovery technique is proposed and analyzed for finite element solutions which provides new approximations with high order of accuracy. The based on the method least-squares surface fitting in a finite-dimensional space corresponding to coarse mesh. It proved that recovered has superconvergence appropriately chosen spaces. robust, efficient, applicable wide class problems such as Stokes elasticity equations.