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Imposing Active Sources during High-Frequency Passive Surface-Wave Measurement Article

Feng Cheng,Jianghai Xia,Chao Shen,Yue Hu,Zongbo Xu,Binbin Mi

Engineering 2018, Volume 4, Issue 5,   Pages 685-693 doi: 10.1016/j.eng.2018.08.003

Abstract: In general, passive surface-wave methods cannot provide phase velocities up to several tens of hertz;To reduce the amount of field work, we propose a strategy for a high-frequency passive surface-wave surveythat imposes active sources during continuous passive surface-wave observation; we call our strategysurface-wave observation.measurement or passive surface-wave measurement.

Keywords： Passive surface wave     Active surface wave     High frequency     Mixed-source surface wave     Spatial autocorrelation     Multichannel analysis of passive surface waves    

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On subsurface box-shaped lined tunnel under incident SH-wave propagation

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 948-960 doi: 10.1007/s11709-021-0740-x

Abstract: study is carried out to sensitize some effective parameters, including frequency content and incident waveangle for obtaining a surface response.distorted the propagation path of the anti-plane waves to achieve the critical states on the ground surface

Keywords： box-lined tunnel     half-plane BEM     surface response     SH-wave     time-domain    

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Near range millimeter wave synthetic aperture radiometer passive range measurement

Wang Benqing,Li Xingguo

Strategic Study of CAE 2010, Volume 12, Issue 3,   Pages 95-99

Abstract:

The Particle Swarm Optimization (PSO) is an evolutionary computation, which not only can search solutions randomly and fully, but also is convenient to be carried out. Hence, the article focuses on the application of PSO to the multiple-objective coordination optimization of project, looking forward to seeking best solutions easily and quickly. After introducing the basic theory of the algorithms and its several versions, the article aims at the efficiency coefficient of quality, cost, time and resource subsystem, and set up a multiple optimization coordination model. In the following part, the article introduces how to apply PSO to solve the project coordination optimization problem in detail. The numeric example followed indicates that PSO can solve the multiple-objectives coordination optimization problem of project exactly and quickly.

Keywords： Particle Swarm Optimization (PSO)     project management     efficiency coefficient of coordination     multiple optimization coordination model     numeric example    

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Passive millimeter-wave target recognition based on Laplacian eigenmaps

Luo Lei,Li Yuehua,Luan Yinghong

Strategic Study of CAE 2010, Volume 12, Issue 3,   Pages 77-81

Abstract: justify;">Aiming at the disadvantages of feature extraction and selection in the traditional method for passivemillimeter-wave (MMW) metal target recognition, the existence and characteristics of low dimensional

Keywords： manifold learning     Laplacian eigenmaps     nonlinear dimensionality reduction     low dimensional manifold     MMW    

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Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 7, doi: 10.1007/s11783-021-1494-3

Abstract:

• A Passive Aeration Ditch was developed to treat decentralized wastewater

Keywords： Decentralized wastewater     Passive aeration ditch     Biofilm formation     C/N ratio     Salinity     Model simulation    

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Numerical modeling and performance evaluation of passive convergence-permeable reactive barrier (PC-PRB

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1731-z

Abstract:

● A 2D finite-element solute transport model, PRB-Trans, is developed.

Keywords： Passive convergence-permeable reactive barrier     Numerical modeling     Hydraulic behavior assessment     Pollutant    

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Dynamicmodeling of awave glider Article

Chun-lin ZHOU, Bo-xing WANG, Hong-xiang ZHOU, Jing-lan LI, Rong XIONG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1295-1304 doi: 10.1631/FITEE.1700294

Abstract: We propose a method to establish a dynamic model for a waveglider, a wave-propelled sea surface vehicleThe vehicle, composed of a surface floatand a submerged glider in sea water, is regarded as a two-particlesystemWe illustratehow to build an analytical dynamics model for the wave glider, whichis a crucial basis for

Keywords： Wave-propelled vehicle     Dynamic modeling     Sea surface vehicle     Wave glider    

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Parametric control of structural responses using an optimal passive tuned mass damper under stationary

Min-Ho CHEY, Jae-Ung KIM

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 267-280 doi: 10.1007/s11709-012-0170-x

Abstract: In this study, the structural control strategy utilizing a passive tuned mass damper (TMD) system as

Keywords： tuned mass damper     parametric optimization     passive control     white noise     earthquake excitation    

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SH-Mode Seismic-Reflection Imaging of Earthfill Dams Article

Edward W. Woolery

Engineering 2018, Volume 4, Issue 5,   Pages 694-701 doi: 10.1016/j.eng.2018.08.009

Abstract: ., faults, cavities, low-velocity layers, etc.) are typical problems in near-surface geophysics.However, strategic geotechnical drilling integrated with the broad utility of near-surface geophysics, particularly the horizontally polarized shear-wave (SH-mode) seismic-reflection technique for imagingDemonstrative evidence for this supposition is provided in the form of SH-wave seismic-reflection imaging

Keywords： Geophysics     Seismic reflection     Shear-wave     Near-surface     Dam safety    

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Power maximization of variable-speed variable-pitch wind turbines using passive adaptive neural fault

Hamed HABIBI, Hamed RAHIMI NOHOOJI, Ian HOWARD

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 377-388 doi: 10.1007/s11465-017-0431-4

Abstract:

Power maximization has always been a practical consideration in wind turbines. The question of how to address optimal power capture, especially when the system dynamics are nonlinear and the actuators are subject to unknown faults, is significant. This paper studies the control methodology for variable-speed variable-pitch wind turbines including the effects of uncertain nonlinear dynamics, system fault uncertainties, and unknown external disturbances. The nonlinear model of the wind turbine is presented, and the problem of maximizing extracted energy is formulated by designing the optimal desired states. With the known system, a model-based nonlinear controller is designed; then, to handle uncertainties, the unknown nonlinearities of the wind turbine are estimated by utilizing radial basis function neural networks. The adaptive neural fault tolerant control is designed passively to be robust on model uncertainties, disturbances including wind speed and model noises, and completely unknown actuator faults including generator torque and pitch actuator torque. The Lyapunov direct method is employed to prove that the closed-loop system is uniformly bounded. Simulation studies are performed to verify the effectiveness of the proposed method.

Keywords： wind turbine nonlinear model     maximum power tracking     passive fault tolerant control     adaptive neural control    

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Recent developments in passive interconnected vehicle suspension

Wade A. SMITH, Nong ZHANG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1,   Pages 1-18 doi: 10.1007/s11465-009-0092-z

Abstract: paper presents an overall review on the historical concept development and research advancement of passiveIt starts with an introduction to passive HIS systems and their various incarnations developed over manyindependently specify modal stiffness and damping parameters – a characteristic unique among passive

Keywords： interconnected suspensions     rollover prevention     vehicle dynamics     ride comfort     multibody system dynamics     hydraulic system dynamics    

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Dispersion-engineered wideband low-profile metasurface antennas Review Articles

Wei E. I. LIU, Zhi Ning CHEN, Xianming QING

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1,   Pages 27-38 doi: 10.1631/FITEE.1900473

Abstract: A metasurface (MTS) can be characterized in terms of dispersion properties of guided waves and surface

Keywords： Metasurface antenna     Dispersion engineering     Composite right/left-handed (CRLH)     Guided wave     Surface wave    

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Study on wave rotor refrigerators

Yuqiang DAI, Dapeng HU, Meixia DING

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 83-87 doi: 10.1007/s11705-009-0075-y

Abstract: As a novel generation of a rotational gas wave machine, the wave rotor refrigerator (WRR) is an unsteadyA basic limitation on main structural parameters and operating parameters is deduced and the wave diagramIn the DUT Gas Wave Refrigeration Studying and Development Center (GWRSDC) lab, the isentropic efficiency

Keywords： wave rotor     refrigeration     unsteady flow theory     wave diagram    

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Prediction of the shear wave velocity

Amoroso SARA

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1,   Pages 83-92 doi: 10.1007/s11709-013-0234-6

Abstract: The paper examines the correlations to obtain rough estimates of the shear wave velocity from non-seismic

Keywords： horizontal stress index     shear wave velocity     flat dilatometer test     cone penetration test    

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Moving target detection in the cepstrum domain for passive coherent location (PCL) radar

Ji-chuan LI,Xiao-de LU,Hui ZHANG,Peng-cheng YANG,Yu LIU,Mao-sheng XIANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 9,   Pages 785-795 doi: 10.1631/FITEE.1500036

Abstract: A cepstrum moving target detection (CEPMTD) algorithm based on cepstrum techniques is proposed for passive

Keywords： Moving target detection     Cepstrum techniques     Cross ambiguity function (CAF)     Passive coherent location    

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Title Author Date Type Operation

Imposing Active Sources during High-Frequency Passive Surface-Wave Measurement

Feng Cheng,Jianghai Xia,Chao Shen,Yue Hu,Zongbo Xu,Binbin Mi

Journal Article

On subsurface box-shaped lined tunnel under incident SH-wave propagation

Journal Article

Near range millimeter wave synthetic aperture radiometer passive range measurement

Wang Benqing,Li Xingguo

Journal Article

Passive millimeter-wave target recognition based on Laplacian eigenmaps

Luo Lei,Li Yuehua,Luan Yinghong

Journal Article

Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD

Journal Article

Numerical modeling and performance evaluation of passive convergence-permeable reactive barrier (PC-PRB

Journal Article

Dynamicmodeling of awave glider

Chun-lin ZHOU, Bo-xing WANG, Hong-xiang ZHOU, Jing-lan LI, Rong XIONG

Journal Article

Parametric control of structural responses using an optimal passive tuned mass damper under stationary

Min-Ho CHEY, Jae-Ung KIM

Journal Article

SH-Mode Seismic-Reflection Imaging of Earthfill Dams

Edward W. Woolery

Journal Article

Power maximization of variable-speed variable-pitch wind turbines using passive adaptive neural fault

Hamed HABIBI, Hamed RAHIMI NOHOOJI, Ian HOWARD

Journal Article

Recent developments in passive interconnected vehicle suspension

Wade A. SMITH, Nong ZHANG,

Journal Article

Dispersion-engineered wideband low-profile metasurface antennas

Wei E. I. LIU, Zhi Ning CHEN, Xianming QING

Journal Article

Study on wave rotor refrigerators

Yuqiang DAI, Dapeng HU, Meixia DING

Journal Article

Prediction of the shear wave velocity

Amoroso SARA

Journal Article

Moving target detection in the cepstrum domain for passive coherent location (PCL) radar

Ji-chuan LI,Xiao-de LU,Hui ZHANG,Peng-cheng YANG,Yu LIU,Mao-sheng XIANG

Journal Article