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Jian Qu

Researcher at University of Alberta

Publications -  12
Citations -  456

Jian Qu is an academic researcher from University of Alberta. The author has contributed to research in topics: Support vector machine & Prognostics. The author has an hindex of 9, co-authored 12 publications receiving 406 citations.

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Joint amplitude and frequency demodulation analysis based on local mean decomposition for fault diagnosis of planetary gearboxes

TL;DR: In this paper, a joint amplitude and frequency demodulation method is proposed for fault diagnosis of planetary gearboxes by matching the dominant peaks in the envelope spectrum and the spectrum of instantaneous frequency with the theoretical characteristic frequencies of faulty gears.
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Fault level diagnosis for planetary gearboxes using hybrid kernel feature selection and kernel Fisher discriminant analysis

TL;DR: Experimental results on fault level diagnosis demonstrate that the proposed hybrid dimension reduction method has advantages over other approaches that use feature selection or KFDA separately.
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Genetic-algorithm-based optimal apportionment of reliability and redundancy under multiple objectives

TL;DR: A multi-objective optimization algorithm is proposed that combines a niched Pareto GA with a constraint handling method that does not need penalty parameters and the optimal solutions obtained are compared.
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Support vector machine based data processing algorithm for wear degree classification of slurry pump systems

TL;DR: A data processing algorithm is developed to achieve the effectiveness, which includes data cleaning followed by feature selection, which is adopted in the classification of the wear degree of pump impellers in a slurry pump system.
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Reliability and Availability Analysis of a Repairable $k$ -out-of- $n:G$ System With $R$ Repairmen Subject to Shut-Off Rules

TL;DR: This work considers a general k-out-of-n:G system which has identical components with identical repair time and lifetime distributions, and derives new closed form solutions for important performance measures including steady state availability, mean time to system failure, andmean time to first system failure.