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Hassan YOUSEFI, Alireza TAGHAVI KANI, Iradj MAHMOUDZADEH KANI, Soheil MOHAMMADI
Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2, Pages 446-472 doi: 10.1007/s11709-019-0605-8
Keywords: ambient vibration test high level noise iterative signal enhancement wavelet cross and autocorrelationof wavelets
Frequency-domain Analysis of ECG Signals
Tu Chengyuan,Zeng Yanjun,Li Shuxin
Strategic Study of CAE 2002, Volume 4, Issue 12, Pages 66-70
Keywords: ECG curve P-wave f-wave AF (atrial fibrillation) histogram power spectrum autocorrelation cross-correlation
Methods and applications of DEA cross-efficiency: Review and future perspectives
Jie WU, Jiasen SUN, Liang LIANG
Frontiers of Engineering Management 2021, Volume 8, Issue 2, Pages 199-211 doi: 10.1007/s42524-020-0133-1
Keywords: cross-efficiency evaluation efficiency secondary goal model aggregation review
Xinjian Li,Minna Cheng,Hao Zhang,Ting Ke,Yisheng Chen
Frontiers of Medicine 2015, Volume 9, Issue 1, Pages 100-107 doi: 10.1007/s11684-014-0372-9
Keywords: prevalence determination employee public hospital cross-sectional study physical inactivity
River Chief System (RCS): An experiment on cross-sectoral coordination of watershed governance
Longfei Wang, Jiaxin Tong, Yi Li
Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1157-9
The trans-regional characteristics of watershed governance produce more problems beyond the capacity of each individual water-related department, leading to the fragmentation of watershed management. The River Chief System (RCS) has experienced swift developments over the past decade in China by appointing the local government heads as river chiefs. RCS works efficiently in the short-term due to its superiority in the inclusion of clear responsibility, authority, and multi-sectoral collaboration. However, the characteristics of the authority-based vertical coordination of the hierarchical system remain unchanged, and therefore the problems of organizational logic and the responsibility dilemma still exist. Tasks including perfecting of laws, integrated watershed management, and public participation still need to be completed. RCS reflects the routine and characteristics of the migration of national governance, and as such provides new insights for other developing countries in the design of river management systems.
Keywords: River Chief System Watershed governance Cross-sectoral coordination Environmental protection
Air bearing center cross gap of neutron stress spectrometer sample table support system
Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG
Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4, Pages 403-411 doi: 10.1007/s11465-016-0405-y
Keywords: neutron stress spectrometer sample table support system air bearing center cross gap simulation experiment
RESPONSE OF WHEAT COMPOSITE CROSS POPULATIONS TO DISEASE AND CLIMATE VARIATION OVER 13 GENERATIONS
Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 3, Pages 400-415 doi: 10.15302/J-FASE-2021394
Since the F5 (2005), three winter wheat composite cross populations (CCPs) based on
Keywords: evolutionary breeding heterogeneous crop population management system
Technical innovation for Sanyang Road Cross-river Tunnel Project
Yu ZHONG
Frontiers of Engineering Management 2018, Volume 5, Issue 3, Pages 411-415 doi: 10.15302/J-FEM-2018206
Yuji CHEN, Qizhi LUO,
Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4, Pages 352-356 doi: 10.1007/s11709-009-0057-7
Keywords: thin-walled box girder with variable cross-sections potential variational theory shear lag large deflection
ZHANG Shiliang, ZHOU Jie, CHEN Xiaohu
Frontiers in Energy 2008, Volume 2, Issue 2, Pages 183-186 doi: 10.1007/s11708-008-0025-2
Yun Liu, Youquan Zhu, Chaojun Li
Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1, Pages 3-8 doi: 10.1007/s11705-017-1693-4
Keywords: biaryl acids cross-dehydrogenative coupling rhodium-catalyzed
Jun Wei, Jianbo Zhao, Di Cai, Wenqiang Ren, Hui Cao, Tianwei Tan
Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5, Pages 857-867 doi: 10.1007/s11705-019-1880-6
Keywords: porous carbon multilevel pores polyaspartic acid cross-linking hydrogen adsorption
Peibo Hu,Yahao Dong,Xiaotian Wu,Yuping Wei
Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3, Pages 389-395 doi: 10.1007/s11705-016-1575-1
Keywords: cellulose-supported 2-aminopyridine palladium nanoparticles ecofriendly catalyst Suzuki cross-coupling
Nonpolar cross-stacked super-aligned carbon nanotube membrane for efficient wastewater treatment
Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1630-3
● A novel nonpolar super-aligned carbon nanotube (SACNT) membrane was prepared.
Keywords: Membrane fouling Wastewater Membrane separation Antifouling Aligned carbon nanotube
Application of wavelet scalogram in feature extraction of acoustic emission signal
Xiao Siwen,Liao Chuanjun,Li Xuejun
Strategic Study of CAE 2008, Volume 10, Issue 11, Pages 69-75
Acoustic emission (AE) signals initiated by mechanical faults or damages is composed of two types of signals: high frequency burst impulse signal and long period quasi-stationary noise signal. Wavelet scalogram has a particular time-frequency localization, which helps it to be well used for describing the time-frequency characteristics of AE signals. By analyzing the characteristics and feature extraction of typical AE signals, the paper applies wavelet scalogram for fault diagnosis based on AE technique, and presents the wavelet scalogram analysis method of AE signal for the first time. By theoretical analysis and simulation, the wavelet basis function and parameter related to the function are defined. So the limitation that best time resolution and frequency resolution of wavelet scalogram cannot get at the same time is overcome effectively. When applying wavelet scalogram for fault diagnosis of rolling bearings based on AE techniques, the results are quite visualized, clear and accurate. Both simulations and experimental research prove that wavelet scalogram can be used for condition monitoring and fault diagnosis based on AE detection well.
Keywords: wavelets scalogram acoustic emission feature extraction fault diagnosis rolling bearing
Title Author Date Type Operation
Wavelet-based iterative data enhancement for implementation in purification of modal frequency for extremely noisy ambient vibration tests in Shiraz-Iran
Hassan YOUSEFI, Alireza TAGHAVI KANI, Iradj MAHMOUDZADEH KANI, Soheil MOHAMMADI
Journal Article
Methods and applications of DEA cross-efficiency: Review and future perspectives
Jie WU, Jiasen SUN, Liang LIANG
Journal Article
Prevalence and determinations of physical inactivity among public hospital employees in Shanghai, China: a cross-sectional
Xinjian Li,Minna Cheng,Hao Zhang,Ting Ke,Yisheng Chen
Journal Article
River Chief System (RCS): An experiment on cross-sectoral coordination of watershed governance
Longfei Wang, Jiaxin Tong, Yi Li
Journal Article
Air bearing center cross gap of neutron stress spectrometer sample table support system
Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG
Journal Article
RESPONSE OF WHEAT COMPOSITE CROSS POPULATIONS TO DISEASE AND CLIMATE VARIATION OVER 13 GENERATIONS
Journal Article
Mechanics analysis of thin-walled box continuous girder with variable cross-sections in considering effect
Yuji CHEN, Qizhi LUO,
Journal Article
Experimental study on the temperature dependence of ultraviolet absorption cross-sections of sulfur dioxide
ZHANG Shiliang, ZHOU Jie, CHEN Xiaohu
Journal Article
Mild and highly regioselective synthesis of biaryl acids via Rh(I)-catalyzed cross-dehydrogenative coupling
Yun Liu, Youquan Zhu, Chaojun Li
Journal Article
Synthesis of micro/meso porous carbon for ultrahigh hydrogen adsorption using cross-linked polyaspartic
Jun Wei, Jianbo Zhao, Di Cai, Wenqiang Ren, Hui Cao, Tianwei Tan
Journal Article
functionalized cellulose based Pd nanoparticles: An efficient and ecofriendly catalyst for the Suzuki cross-coupling
Peibo Hu,Yahao Dong,Xiaotian Wu,Yuping Wei
Journal Article
Nonpolar cross-stacked super-aligned carbon nanotube membrane for efficient wastewater treatment
Journal Article