Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 966

Year

2024 2

2023 85

2022 87

2021 91

2020 79

2019 59

2018 72

2017 42

2016 37

2015 62

2014 40

2013 36

2012 37

2011 44

2010 35

2009 30

2008 21

2007 16

2006 9

2005 12

open ︾

Keywords

energy 28

renewable energy 27

energy consumption 24

solar energy 23

energy security 19

energy efficiency 18

energy saving 15

energy revolution 14

sustainable development 12

China 10

energy transition 10

Energy consumption 6

carbon neutrality 6

climate change 6

development strategy 6

energy dissipation 6

energy strategy 6

hydrogen energy 6

energy storage 5

open ︾

Search scope:

排序： Display mode:

feature extraction of planet gear in wind turbine gearbox based on spectral kurtosis and time wavelet energyspectrum

Yun KONG, Tianyang WANG, Zheng LI, Fulei CHU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3, Pages 406-419 doi: 10.1007/s11465-017-0419-0

Abstract: effectively, we propose a novel feature extraction method based on spectral kurtosis and time wavelet energyspectrum (SK-TWES) in the paper.Finally, the time wavelet energy spectrum analysis is performed on the filtered signal, selecting Morlet

Keywords： wind turbine planet gear fault feature extraction spectral kurtosis time wavelet energy spectrum

HTML PDF Collect

Mirror system based therapy for autism spectrum disorders

CHEN Wei, ZHANG Jing, DING Jun

Frontiers of Medicine 2008, Volume 2, Issue 4, Pages 344-347 doi: 10.1007/s11684-008-0065-3

Abstract: autisms’ cognitive research and mirror systems and introduces a new hypothesis about the causes of autism spectrum

Keywords： emotional cognition observation activation spectrum empirical research

HTML PDF Collect

Solar fuel from photo-thermal catalytic reactions with spectrum-selectivity: a review

Sanli TANG, Jie SUN, Hui HONG, Qibin LIU

Frontiers in Energy 2017, Volume 11, Issue 4, Pages 437-451 doi: 10.1007/s11708-017-0509-z

Abstract: Solar fuel is one of the ideal energy sources in the future.This paper reviews different approaches for solar fuel production from spectrum-selective photo-thermalThe review begins with the meaning of synergetic effects, and the mechanisms of spectrum-selectivityIn addition, these works are summarized and tabulated based on the operating conditions, spectrum-selectivitydiscussion is finally presented concerning future development of photo-thermal catalytic reactions with spectrum-selectivity

Keywords： photo-thermal catalysis spectrum-selectivity solar fuel full-spectrum

HTML PDF Collect

Detection of geosmin and 2-methylisoborneol by liquid-liquid extraction-gas chromatograph mass spectrum(LLE-GCMS) and solid phase extraction-gas chromatograph mass spectrum (SPE-GCMS)

MA Xiaoyan, CHEN Beibei, LI Qingsong, ZHANG Qiaoli, GU Guofen

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 3, Pages 286-291 doi: 10.1007/s11783-007-0048-7

Abstract: adopted in liquid-liquid extraction (LLE), and the extracts were analyzed by gas chromatograph mass spectrum

Keywords： summer flocculation simple Shanghai spectrum

HTML PDF Collect

A Cell Condition-Sensitive Frequency Segmentation Method Based on the Sub-Band Instantaneous Energy Spectrum Article

Zhaohui Zeng, Weihua Gui, Xiaofang Chen, Yongfang Xie, Hongliang Zhang, Yubo Sun

Engineering 2021, Volume 7, Issue 9, Pages 1282-1292 doi: 10.1016/j.eng.2020.11.012

Abstract: Based on the qualitative analysis of the cell voltage, the sub-band instantaneous energy spectrum (SIEPCompared with the instantaneous energy spectrum based on empirical mode decomposition, the SIEP morefinely represents the law of energy change with time in any designated frequency band within the effective

Keywords： Sub-band instantaneous energy spectrum Cell condition-sensitive frequency band Frequency segmentation

HTML PDF Collect

Contact fatigue life prediction of a bevel gear under spectrum loading

Pan JIA, Huaiju LIU, Caichao ZHU, Wei WU, Guocheng LU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1, Pages 123-132 doi: 10.1007/s11465-019-0556-8

Abstract: typical torque–time history on the driven axle is described, followed by the construction of program load spectrum

Keywords： bevel gear rolling contact fatigue (RCF) multiaxial fatigue criterion load spectrum damage accumulation

HTML PDF Collect

A new anti-jamming communication technical system：pre-encoded code hopping spread spectrum

Yao Fuqiang,Zhang Yi

Strategic Study of CAE 2011, Volume 13, Issue 10, Pages 69-75

Abstract:

A kind of pre-encoded code hopping spread spectrum (PCHSS) communicationresearched after analyzing its necessity based on the deficiency of conventional direct-sequence spread spectrumdiscussions include the basic principle of PCHSS, the differences between PCHSS and self-coded spread spectrum

Keywords： anti-jamming communication direct-sequence spread spectrum pre-encoded code hopping spread spectrum self-coded spread spectrum

HTML PDF Collect

A novel light fluctuation spectrum method for in-line particle sizing

Shouxuan QIN, Xiaoshu CAI, Li MA

Frontiers in Energy 2012, Volume 6, Issue 1, Pages 89-97 doi: 10.1007/s11708-012-0176-z

Abstract: Secondly, by combining spectrum analysis with Gregory’s theory, a multi-sub-size zone model is proposed

Keywords： in-line measurement particle size distribution (PSD) incident light intensity particle concentration light fluctuation

HTML PDF Collect

The Study of an Improved Algorithm About Hilbert Energy Spectrum

Yang Jianwen,Jia Minping,Xu Feiyun,Hu Jianzhong

Strategic Study of CAE 2005, Volume 7, Issue 7, Pages 55-59

Abstract:

The Hilbert energy spectrum's principle in HHT is analyzed in the paper; Aimed to solve the endproblem in the instantaneous spectrum figure, the cause is researched and ARMA model is introduced inadvanced method is proved to be able to improve the end problem effectively and optimize the Hilbert energyspectrum greatly.

Keywords： Hilbert transform the distortion of end instantaneous parameter intrinsic mode function

HTML PDF Collect

Study on the Wavelet Packet Transform Method for Fault Diagnosis of Five Roller Orientation Clutch

Hu Binliang,Luo Yixin,Xie Ming

Strategic Study of CAE 2005, Volume 7, Issue 6, Pages 66-68

Abstract:

The theory and method of wavelet packet decomposition and its energy spectrum dealing with the faultcharacteristic frequency band of the fault can be identified by wavelet packet decomposition and its energyspectrum conveniently.

Keywords： fault diagnosis wavelet packet energy spectrum clutch

HTML PDF Collect

The Constructions of Cryptographic Functions

Teng Jihong,Zhang Wenying,Liu Wenfen,Li Shiqu

Strategic Study of CAE 2003, Volume 5, Issue 7, Pages 47-52

Abstract:

This paper investigates a decomposition formula of Walsh spectrum for a class of Boolean functions

Keywords： Walsh spectrum decomposition formula of Walsh spectrum Bent function resilient function strict avalanche

HTML PDF Collect

Measurement and analysis of tip clearance unsteady flow spectrum in axial-flow fan rotor

LIU Bo, HOU Weimin, MA Changyou, WANG Yangang, ZHOU Qiang

Frontiers in Energy 2008, Volume 2, Issue 4, Pages 448-452 doi: 10.1007/s11708-008-0088-0

Abstract: development from the inlet to the outlet of an axial-flow rotor was revealed by analyzing pressure frequency spectrum

Keywords： development endwall unsteady pressure pressure measurement experiment

HTML PDF Collect

High efficiency spreading spectrum modulation based on double orthogonal complex sequences

Shi Xiaohong

Strategic Study of CAE 2012, Volume 14, Issue 3, Pages 108-112

Abstract:

This paper presents a kind of high efficiency spreading spectrum modulation

Keywords： modulation and demodulation high efficiency spreading spectrum modulation forward phase correction

HTML PDF Collect

Wave Spectrum Transformation and Wave Breaking on Gentle Slope

Li Yucheng,Cui Lifang,Yu Yang,Dong Guohai,Gao Jiajun,Zhuang Shixian

Strategic Study of CAE 2000, Volume 2, Issue 5, Pages 51-59

Abstract: theoretical analysis, computation and physical model tests, the breaking criteria for irregular waves, wave spectrum

Keywords： wave spectrum beach slope transformation breaking

HTML PDF Collect

Research on wheel load spectrum for the steel deck pavement design of Taizhou Bridge

Li Hongtao,Pan Youqiang and Zhang Zhixiang

Strategic Study of CAE 2012, Volume 14, Issue 5, Pages 85-89

Abstract: The traffic volume and loading of truck of Yangtze River Bridge are analyzed by wheel load spectrum.

Keywords： Yangtze River Bridges wheel load spectrum wheel load type traffic volume traffic loading

HTML PDF Collect

Title Author Date Type Operation

feature extraction of planet gear in wind turbine gearbox based on spectral kurtosis and time wavelet energyspectrum

Yun KONG, Tianyang WANG, Zheng LI, Fulei CHU

Journal Article

Mirror system based therapy for autism spectrum disorders

CHEN Wei, ZHANG Jing, DING Jun

Journal Article

Solar fuel from photo-thermal catalytic reactions with spectrum-selectivity: a review

Sanli TANG, Jie SUN, Hui HONG, Qibin LIU

Journal Article

Detection of geosmin and 2-methylisoborneol by liquid-liquid extraction-gas chromatograph mass spectrum(LLE-GCMS) and solid phase extraction-gas chromatograph mass spectrum (SPE-GCMS)

MA Xiaoyan, CHEN Beibei, LI Qingsong, ZHANG Qiaoli, GU Guofen

Journal Article

A Cell Condition-Sensitive Frequency Segmentation Method Based on the Sub-Band Instantaneous Energy Spectrum

Zhaohui Zeng, Weihua Gui, Xiaofang Chen, Yongfang Xie, Hongliang Zhang, Yubo Sun

Journal Article

Contact fatigue life prediction of a bevel gear under spectrum loading

Pan JIA, Huaiju LIU, Caichao ZHU, Wei WU, Guocheng LU

Journal Article

A new anti-jamming communication technical system：pre-encoded code hopping spread spectrum

Yao Fuqiang,Zhang Yi

Journal Article

A novel light fluctuation spectrum method for in-line particle sizing