Wei Xu

ORCID: 0000-0003-2464-4460
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Research Areas
  • Digital Filter Design and Implementation
  • Advanced Adaptive Filtering Techniques
  • Remote-Sensing Image Classification
  • Machine Fault Diagnosis Techniques
  • Power Transformer Diagnostics and Insulation
  • Acoustic Wave Phenomena Research
  • Advanced Manufacturing and Logistics Optimization
  • Advanced Computational Techniques and Applications
  • Product Development and Customization
  • Video Surveillance and Tracking Methods
  • Numerical Methods and Algorithms
  • Advancements in PLL and VCO Technologies
  • Lower Extremity Biomechanics and Pathologies
  • Muscle activation and electromyography studies
  • Power System Reliability and Maintenance
  • Fire Detection and Safety Systems
  • Image and Video Stabilization
  • High-Velocity Impact and Material Behavior
  • Optimization and Packing Problems
  • SAS software applications and methods
  • Electromagnetic Simulation and Numerical Methods
  • Autonomous Vehicle Technology and Safety
  • Spectroscopy and Chemometric Analyses
  • Geotechnical Engineering and Underground Structures
  • Structural Health Monitoring Techniques

West China Medical Center of Sichuan University
2025

University of Science and Technology of China
2025

Taishan University
2023

Naval Research Academy
2022

Naval University of Engineering
2014-2022

Dalian Maritime University
2014-2021

National University of Singapore
2014

Nanyang Technological University
2010-2013

Shenyang Jianzhu University
2013

Abstract The premise of this study was that practical problem solving within a complex work domain (ergonomic design and integration computer workstations) could be enhanced by hypertext representation domain. Two alternative representations were developed. first consisted an ecological interface based on the means-end abstraction hierarchy (AH) approach (Vicente & Rasmussen, 1992). In design, goal-relevant constraints functional relations explicitly represented interface. second more...

10.1207/s15327590ijhc1103_2 article EN International Journal of Human-Computer Interaction 1999-09-01

A popular technique to design variable fractional delay (VFD) filters or bandedge is the polynomial based finite impulse response (FIR) filters, where each filter coefficient approximated as a of parameter. However, if required have both VFD and bandedge, computational complexity becomes very high, because two-dimensional polynomials be used, provided that same idea followed. In this paper, bank approach proposed for filters. The basic split full band signals into subbands subband is,...

10.1109/tsp.2011.2170169 article EN IEEE Transactions on Signal Processing 2011-10-05

The paper proposes an optimization technique for the design of variable digital filters with simultaneously tunable bandedge and fractional delay using a fast filter bank (FFB) approach. In FFB approach, full band signals are split into multibands, each is multiplied by proper phase shift to realize delay. proposed technique, in formulation 0th stage prototype FFB, ripples subsequent stages all taken consideration. addition, shaping applied last retained form transition filter, such that...

10.1109/tcsi.2013.2284176 article EN IEEE Transactions on Circuits and Systems I Regular Papers 2014-01-31

In response to the lack of generality in feature extraction using modal decomposition methods and susceptibility diagnostic performance parameter selection traditional mechanical fault diagnosis high-voltage circuit breaker operating mechanisms, this paper proposes a Global-Local method based on Generalized S-Transform (S-Translate) combined with Gray Level Co-Occurrence Matrix (GLCM) complemented by Maximum Relevance Minimum Redundancy (mRMR) selection. The GL (Global-Local)-mRMR-KELM model...

10.3390/s24010124 article EN cc-by Sensors 2023-12-26

In recent research on the optimization of variable fractional delay (VFD) filters, group errors have been paid additional attention besides conventional criterion frequency response errors. While physically measures magnitude envelop a signal, an important application VFD filters is to estimate instantaneous delayed samples, such as in applications interpolation. view this, impact error estimation samples investigated this brief. Analysis and simulation results show that applications,...

10.1109/tcsii.2013.2268239 article EN IEEE Transactions on Circuits & Systems II Express Briefs 2013-07-09

Region growing is one of the popular segmentation algorithms for 2-D image, which comes up a continuous interested region. How to extent this method hyperspectral image processing effectively problem needs be discussed deeply. Here in paper, three ways using region scenario are explored separate oil from sea water. Furthermore, order release influence sunlight, modification rule prompted, considering property local At last, normalized ATGP used obtain more potential target. The experiment...

10.1117/12.2053333 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2014-05-22

By investigating the coefficient matrix of Farrow structure based Lagrange-type variable fractional delay (VFD) FIR filters, a new implementation strategy is proposed for this type VFD. Due to dependence values within each subfilter and between adjacent subfilters, technique reduces number independent be synthesized 25% that original one. Furthermore, all coefficients could scaled integers by common factor. Thus, multiplierless filtering techniques used synthesize without introducing any...

10.1109/iscas.2010.5537474 article EN 2010-05-01

Extreme marine environmental cyclic loading significantly affects the serviceability of monopiles applied for foundation offshore wind turbines (OWTs). Existing research has primarily used p-y methods or total stress-based models to investigate behavior monopile–marine clay systems, overlooking pore pressure development in subsea clay. Studies on effective under various lateral conditions are limited. This paper presents an 3D finite element numerical method developed predict key behaviors...

10.3390/jmse12122260 article EN cc-by Journal of Marine Science and Engineering 2024-12-09

The objective of this work was to investigate the effect stiffener strength on failure mode an outer-stiffened plate subjected confined blast loading. A relatively rigid box with one open side designed, provide a space, and stiffened fixed onto side. Various field experiments plates different dimensions were conducted. Transducers placed typical points record overpressure history. post-explosion deformation drawn utilizing 3D scanner technique, modes examined in detail. thickness, height,...

10.3390/met12050859 article EN cc-by Metals 2022-05-17

Aiming at the fault status of lube system in power plant, common faults tree stucture is established, meanwhile, bayesian network model for state reasoning constructed and procedure analysised deeply typical system,a new method provided to diagnosis fastly.

10.4028/www.scientific.net/amm.662.220 article EN Applied Mechanics and Materials 2014-10-01

Because of high fire frequency and huge losses, the research signal detection in monitoring system is an important task fire-preventing field. The method based on vision can overcome shortcomings that exist some traditional methods i.e. it surmount large impact environmental interference factors, such as temperature, photographic smoke environment. With many researcher’s results, shows clearly error rate flame recognition low, also real-time ability anti-disturbance are very good.

10.4028/www.scientific.net/amr.659.134 article EN Advanced materials research 2013-01-01

Aiming at the problem of number residual points due to environmental noise in interference phase diagram, it will cause some loss unwrapping and terrain deformation inversion precision. This paper proposes a phase-preserving filtering method based on contourlet transform. The adopts idea multi-resolution multi-direction, which leads improvement performance method. Firstly, image is decomposed by using directional filter; second perform filtered image. Compared with traditional methods, this...

10.1109/apsar46974.2019.9048253 article EN 2019-11-01
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