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Variational mode decomposition based modal parameter identification in civil engineering

Mingjie ZHANG, Fuyou XU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1082-1094 doi: 10.1007/s11709-019-0537-3

Abstract: An out-put only modal parameter identification method based on variational mode decomposition (VMD) isThe proposed identification method can straightforwardly extract the mode shape vectors using the modalThe results of the present method are compared with those of the empirical mode decomposition-based method

Keywords： modal parameter identification     variational mode decomposition     civil structure     nonlinear system     closely    

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A novel hybrid model for water quality prediction based on VMD and IGOA optimized for LSTM

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 7, doi: 10.1007/s11783-023-1688-y

Abstract:

● A novel VMD-IGOA-LSTM model has proposed for the prediction of water quality.

Keywords： Water quality prediction     Grasshopper optimization algorithm     Variational mode decomposition     Long short-term    

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Relative vibration identification of cutter and workpiece based on improved bidimensional empirical modedecomposition

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 227-239 doi: 10.1007/s11465-020-0587-1

Abstract: In this study, the bidimensional empirical mode decomposition (BEMD) method is used to identify suchThe decomposition examples show that the improved BEMD can effectively solve the problem of boundaryThe decomposition results of simulation and experimental surface morphology demonstrate the validity

Keywords： bidimensional empirical mode decomposition     spatial spectrum analysis     boundary effect     vibration identification    

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Variation characteristics of atmospheric methane and carbon dioxide in summertime at a coastal site in the South China Sea

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1574-z

Abstract:

● Diurnal patterns of CH4 and CO2 are clearly extracted using EEMD.

Keywords： Methane     Carbon dioxide     Diurnal pattern     Ensemble empirical mode decomposition     South China Sea     Sea    

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Stability analysis of slopes with planar failure using variational calculus and numerical methods

Norly BELANDRIA, Roberto ÚCAR, Francisco M. LEÓN, Ferri HASSANI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1262-1273 doi: 10.1007/s11709-020-0657-9

Abstract: This study investigates the technique of variational calculus applied to estimate the slope stability

Keywords： slopes stability     planar failure     variational calculus     numerical methods    

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Decomposition analysis applied to energy and emissions: A literature review

Frontiers of Engineering Management   Pages 625-639 doi: 10.1007/s42524-023-0270-4

Abstract: Decomposition analysis has been widely used to assess the determinants of energy and CO2 emissionsBoth the methodology and application of decomposition analysis have been largely improved in the pastAfter more than 50 years’ developments, decomposition studies have become increasingly sophisticatedemerging trends and features for the decomposition analysis literature as a whole.The findings are expected to direct future research in decomposition analysis.

Keywords： index decomposition analysis     structural decomposition analysis     production decomposition analysis     energy    

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Optimization design of anti-seismic engineering measures for intake tower based on non-dominated sorting genetic algorithm-II

Frontiers of Structural and Civil Engineering   Pages 1428-1441 doi: 10.1007/s11709-023-0998-2

Abstract: object, and its natural vibration characteristics and dynamic response were first analyzed using the modedecomposition response spectrum method based on a three-dimensional finite element model.

Keywords： intake tower     NSGA-II     mode decomposition response spectrum method     anti-seismic engineering measures    

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Noise Reduction of Vibration Signal of Cyclic Machine Based on the EMD

Yang Jianwen,Jia Minping,Xu Feiyun,Hu Jianzhong

Strategic Study of CAE 2005, Volume 7, Issue 8,   Pages 66-69

Abstract:

The filtering property of empirical mode decomposition is analyzed in the paper.

Keywords： fault diagnosis     empirical mode decomposition     cyclic machine     filter    

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Catalytic decomposition of low level ozone with gold nanoparticles supported on activated carbon

Pengyi ZHANG , Bo ZHANG , Rui SHI ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 281-288 doi: 10.1007/s11783-009-0032-5

Abstract: sol immobilization method and were used to investigate their catalytic activity for low-level ozone decompositionX-ray photoelectron spectroscopy (XPS) were used to characterize the catalysts before and after ozone decompositionthose prepared with traditional conduction heating, exhibiting higher catalytic activity for ozone decompositiongold precursor solution significantly influenced the catalytic activity of supported gold for ozone decompositionAfter being used for ozone decomposition, the surface carbon of the catalyst was partly oxidized and

Keywords： ozone decomposition     activated carbon     gold nanoparticles     catalysis     sodium citrate     microwave    

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Product decomposition strategy for optimization of supply chain planning

Braulio BRUNAUD, Maria Paz OCHOA, Ignacio E. GROSSMANN

Frontiers of Engineering Management 2018, Volume 5, Issue 4,   Pages 466-478 doi: 10.15302/J-FEM-2018059

Abstract:

Optimization of large-scale supply chain planning models requires the application of decompositionTwo major options are to use either spatial or temporal Lagrangean decomposition.In this paper, to further reduce the computational expense a novel decomposition scheme by products isThe decomposition is based on a reformulation of knapsack constraints in the problem.The new approach allows for simultaneous decomposition by products and by time periods, enabling the

Keywords： supply chain planning     Lagrangean decomposition     mixed-integer programming    

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Mechanism of methanol decomposition on the Pd/WC(0001) surface unveiled by first-principles calculations

Jinhua Zhang, Yuanbin She

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 1052-1064 doi: 10.1007/s11705-019-1908-y

Abstract: In this study, the decomposition of methanol into the CO and H species on the Pd/tungsten carbide (WCThe DFT calculations indicate that the rupture of the initial C–H bond promotes the decomposition ofThus, the most probable methanol decomposition pathway on the Pd/WC(0001) surface is CH OH → CH OH →study demonstrates that the synergistic effect of WC (as carrier) and Pd (as catalyst) alters the CH OH decomposition

Keywords： density functional theory     methanol     direct methanol fuel cells     WC(0001)-supported Pd monolayer     decomposition    

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Dielectric barrier micro-plasma reactor with segmented outer electrode for decomposition of pure CO

Baowei Wang, Xiaoxi Wang, Bo Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 687-697 doi: 10.1007/s11705-020-1974-1

Abstract: coaxial cylinder dielectric barrier discharge micro-plasma reactors were designed for the non-catalytic decompositionresults indicated that the introduction of segmented outer electrodes can significantly promote the decomposition

Keywords： CO2 decomposition     dielectric barrier discharge     segmented outer electrodes     electrical analysis    

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Thermal decomposition mechanism of ammonium sulfate catalyzed by ferric oxide

Xingfu SONG, Jingcai ZHAO, Yunzhao LI, Ze SUN, Jianguo YU

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 210-217 doi: 10.1007/s11705-013-1320-y

Abstract: The decomposition mechanism of ammonium sulfate catalyzed by ferric oxide was investigated in this paperThe decomposition kinetics parameters were determined via a global optimization of the Kissinger iterativeThe obtained results indicate that the decomposition process of ammonium sulfate catalyzed by ferricThe decomposition mechanisms at the first and the fourth stage both belong to Mample power theorem, the

Keywords： ammonium sulfate     decomposition kinetics     ferric oxide     thermogravimetric analysis    

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Effect of alkyl nitrite decomposition on catalytic performance of CO coupling reaction over supported

Zhenhua LI, Weihan WANG, Dongxue YIN, Jing LV, Xinbin MA

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 410-414 doi: 10.1007/s11705-012-1213-5

Abstract: The difference in synthesizing DMO and DEO on the same catalyst was attributed to the decomposition performances

Keywords： palladium     CO coupling     dialkyl oxalate     alkyl nitrite     decomposition    

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Photo-induced surface frustrated Lewis pairs for promoted photocatalytic decomposition of perfluorooctanoic

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 1, doi: 10.1007/s11783-023-1603-6

Abstract:

● Terminal carboxylate group activation is PFOA degradation’s rate-limiting step.

Keywords： Heterogeneous photocatalysis     Surface frustrated Lewis pairs     Perfluorooctanoic acid     Defluorination efficiency     Environmental remediation    

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Title Author Date Type Operation

Variational mode decomposition based modal parameter identification in civil engineering

Mingjie ZHANG, Fuyou XU

Journal Article

A novel hybrid model for water quality prediction based on VMD and IGOA optimized for LSTM

Journal Article

Relative vibration identification of cutter and workpiece based on improved bidimensional empirical modedecomposition

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Journal Article

Variation characteristics of atmospheric methane and carbon dioxide in summertime at a coastal site in the South China Sea

Journal Article

Stability analysis of slopes with planar failure using variational calculus and numerical methods

Norly BELANDRIA, Roberto ÚCAR, Francisco M. LEÓN, Ferri HASSANI

Journal Article

Decomposition analysis applied to energy and emissions: A literature review

Journal Article

Optimization design of anti-seismic engineering measures for intake tower based on non-dominated sorting genetic algorithm-II

Journal Article

Noise Reduction of Vibration Signal of Cyclic Machine Based on the EMD

Yang Jianwen,Jia Minping,Xu Feiyun,Hu Jianzhong

Journal Article

Catalytic decomposition of low level ozone with gold nanoparticles supported on activated carbon

Pengyi ZHANG , Bo ZHANG , Rui SHI ,

Journal Article

Product decomposition strategy for optimization of supply chain planning

Braulio BRUNAUD, Maria Paz OCHOA, Ignacio E. GROSSMANN

Journal Article

Mechanism of methanol decomposition on the Pd/WC(0001) surface unveiled by first-principles calculations

Jinhua Zhang, Yuanbin She

Journal Article

Dielectric barrier micro-plasma reactor with segmented outer electrode for decomposition of pure CO

Baowei Wang, Xiaoxi Wang, Bo Zhang

Journal Article

Thermal decomposition mechanism of ammonium sulfate catalyzed by ferric oxide

Xingfu SONG, Jingcai ZHAO, Yunzhao LI, Ze SUN, Jianguo YU

Journal Article

Effect of alkyl nitrite decomposition on catalytic performance of CO coupling reaction over supported

Zhenhua LI, Weihan WANG, Dongxue YIN, Jing LV, Xinbin MA

Journal Article

Photo-induced surface frustrated Lewis pairs for promoted photocatalytic decomposition of perfluorooctanoic

Journal Article