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fraction induced by interaction burning of tri-symmetric propane fires in open space based on weighted multi-point

Jie JI, Junrui DUAN, Huaxian WAN

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 1017-1026 doi: 10.1007/s11708-020-0716-x

Abstract: to merging as the spacing decreases, which result in a complex evolution of flame height and merging pointbetween the inside and outside of the flame), a quantitative analysis of the flame height, merging pointMoreover, the multi-point source model was further improved, and radiation fraction of propane was calculated

Keywords： flame interaction     air entrainment     flame height     multi-point source model     thermal radiation    

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Fundamental frequency and testing mode of complicated elastic clamped-plate vibration

QI Hongyuan, GUAN Yiduo

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 360-364 doi: 10.1007/s11465-008-0084-4

Abstract: determined by analyzing the fundamental frequency; meanwhile, according to hamming testing method of multi-pointexcitation to the single-point response, and by signal processing technology and its software programming

Keywords： multi-point excitation     rectangle-plate     single-point     processing technology     trigonometric interpolation    

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Optimization of controlled mechanism based on generalized inverse method

YANG Jin-tang, KONG Jian-yi, XIONG He-gen, JIANG Guo-zhang, LI Gong-fa

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 3,   Pages 288-291 doi: 10.1007/s11465-006-0037-8

Abstract: of freedom, a circle fitting optimization model of controlled mechanism that accurately realizes the multi-point

Keywords： controlled     displacement     multi-point     compensation     optimization    

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Approximation of structural damping and input excitation force

Mohammad SALAVATI

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2,   Pages 244-254 doi: 10.1007/s11709-016-0371-9

Abstract: Structural dynamic characteristics are the most significant parameters that play a decisive role in structural damage assessment. The more sensitive parameter to the damage is the damping behavior of the structure. The complexity of structural damping mechanisms has made this parameter to be one of the ongoing research topics. Despite all the difficulties in the modeling of damping, there are some approaches like as linear and nonlinear models which are described as the energy dissipation throughout viscous, material or structural hysteretic and frictional damping mechanisms. In the presence of a mathematical model of the damping mechanisms, it is possible to estimate the damping ratio from the theoretical comparison of the damped and un-damped systems. On the other hand, solving the inverse problem of the input force estimation and its distribution to each SDOFs, from the measured structural responses plays an important role in structural identification process. In this paper model-based damping approximation method and a model-less structural input estimation are considered. The effectiveness of proposed methods has been carried out through analytical and numerical simulation of the lumped mass system and the results are compared with reference data. Consequently, high convergence of the comparison results illustrates the satisfactory of proposed approximation methods.

Keywords： structural modal parameters     damping identification method     input excitation force identification     Inverse    

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A multiscale-contour-based interpolation framework for generating a time-varying quasi-dense point cloud

Chu-hua HUANG,Dong-ming LU,Chang-yu DIAO

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 5,   Pages 422-434 doi: 10.1631/FITEE.1500316

Abstract: efficient framework to reconstruct 3D dynamic objects using a multiscale-contour-based interpolation from multi-viewthe same model, and two contours which belong to the same view at different times, corresponding to pointThe framework formulates the interpolation of two models as point cloud transport rather than non-rigidOur framework speeds up the reconstruction of a dynamic scene while improving the accuracy of point-pairingWe obtain a higher frame rate, spatio-temporal-coherence, and a quasi-dense point cloud sequence with

Keywords： Multi-view video     Free-viewpoint video     Point-pair     Multiscale-contour-based interpolation     Spatio-temporal-contour     Consistency     Time-varying point cloud sequence    

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Solving multi-objective optimal power flow problem considering wind-STATCOM using differential evolution

Belkacem MAHDAD, K. SRAIRI

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 75-89 doi: 10.1007/s11708-012-0222-x

Abstract: this paper, a simple strategy based differential evolution was proposed for solving the problem of multi-objectiveoptimized simultaneously a combined vector control based active power of wind sources and reactive power of multiwith smooth cost function to solve the problem of security environmental economic dispatch considering multiapproach was validated on a large practical electrical power system 40 generating units considering valve pointSimulation results demonstrate that choosing the installation of multi type of FACTS devices in coordination

Keywords： differential evolution     multi-objective function     optimal power flow     economic dispatch     valve point effect    

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Simulation Research on PWM Control in Excitation System of Generator

Jia Guixi,Xu Wei,Guo Baoyue,Zhang Chentang

Strategic Study of CAE 2005, Volume 7, Issue 6,   Pages 50-53

Abstract:

A high quality excitation system not only plays an important role in the stability of power systemIn this paper, a PWM rectifier is applied to excitation system of synchronous generators.;s supply by achieving low harmonic current conversion and improving high power factor transform of excitation

Keywords： PWM     high power factor     excitation system     Matlab simulation    

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A subband excitation substitute based scheme for narrowband speech watermarking Article

Wei LIU, Ai-qun HU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 5,   Pages 627-643 doi: 10.1631/FITEE.1601503

Abstract: imposed on a passband watermark signal by forcing its power level to be the same as the original passband excitation

Keywords： Analysis filter     Linear prediction     Narrowband speech watermarking     Passband excitation replacement    

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STRENGTHENING NON-POINT SOURCE POLLUTION CONTROL TO PROMOTE AGRICULTURAL GREEN DEVELOPMENT

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 503-509 doi: 10.15302/J-FASE-2023528

Abstract:

STRENGTHENING NON-POINT SOURCE POLLUTION CONTROL TO PROMOTE AGRICULTURAL GREEN DEVELOPMENT

Keywords： GREEN     AGRICULTURAL     PROMOTE     POLLUTION     SOURCE     DEVELOPMENT     POINT     STRENGTHENING     CONTROL    

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Multi-objective particle swarm cooperative optimization algorithm for state parameters

Ding Lei,Wu Min,She Jinhua,Duan Ping

Strategic Study of CAE 2010, Volume 12, Issue 2,   Pages 101-107

Abstract: characters with the strong nonlinear and complex computing of synthetic permeability and burn-through pointFirstly, the multi-objective optimization model for burn-through point and synthetic permeability isSecondly, an improved multi-objective particle swarm cooperative optimization algorithm is presentedand the burn-through point.the optimization problem of the synthetic permeability and burn-through point.

Keywords： lead-zinc sintering process     synthetic permeability     burn-through point     multi-objective particle swarm    

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Multi-View Point-Based Registration for Native Knee Kinematics Measurement with Feature Transfer Learning Article

Cong Wang, Shuaining Xie, Kang Li, Chongyang Wang, Xudong Liu, Liang Zhao, Tsung-Yuan Tsai

Engineering 2021, Volume 7, Issue 6,   Pages 881-888 doi: 10.1016/j.eng.2020.03.016

Abstract:

Deep-learning methods provide a promising approach for measuring in-vivo knee joint motion from fast registration of two-dimensional (2D) to three-dimensional (3D) data with a broad range of capture. However, if there are insufficient data for training, the data-driven approach will fail. We propose a feature-based transfer-learning method to extract features from fluoroscopic images. With three subjects and fewer than 100 pairs of real fluoroscopic images, we achieved a mean registration success rate of up to 40%. The proposed method provides a promising solution, using a learning-based registration method when only a limited number of real fluoroscopic images is available.

Keywords： 2D–3D registration     Machine learning     Domain adaption     Point correspondence    

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Design of Microstructure Parameters on a Small Multi-Throttle Aerostatic Guideway in Photolithography Article

Zhongpu Wen,  Jianwei Wu,  Kunpeng Xing, Yin Zhang,  Jiean Li,  Jiubin Tan

Engineering 2021, Volume 7, Issue 2,   Pages 226-237 doi: 10.1016/j.eng.2019.09.012

Abstract:

A compact multi-throttle aerostatic guideway is the preferred structure for high precision and acceleration

Keywords： Photolithography     Multi-throttle aerostatic guideway     Microstructure     Working point     Rotational stiffness    

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Trajectory planning of mobile robots using indirect solution of optimal control method in generalized point-to-point

M. NAZEMIZADEH, H. N. RAHIMI, K. AMINI KHOIY

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 23-28 doi: 10.1007/s11465-012-0304-9

Abstract:

This paper presents an optimal control strategy for optimal trajectory planning of mobile robots by considering nonlinear dynamic model and nonholonomic constraints of the system. The nonholonomic constraints of the system are introduced by a nonintegrable set of differential equations which represent kinematic restriction on the motion. The Lagrange’s principle is employed to derive the nonlinear equations of the system. Then, the optimal path planning of the mobile robot is formulated as an optimal control problem. To set up the problem, the nonlinear equations of the system are assumed as constraints, and a minimum energy objective function is defined. To solve the problem, an indirect solution of the optimal control method is employed, and conditions of the optimality derived as a set of coupled nonlinear differential equations. The optimality equations are solved numerically, and various simulations are performed for a nonholonomic mobile robot to illustrate effectiveness of the proposed method.

Keywords： mobile robot     trajectory planning     nonlinear dynamic     optimal control    

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Toward autonomous mining: design and development of an unmanned electric shovel via point cloud-based

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0686-2

Abstract: Initially, the point cloud of the material surface is collected and reconstructed by polynomial responseThen, by establishing the dynamical model of the UES, a point to point (PTP) excavation trajectory planning

Keywords： autonomous excavation     unmanned electric shovel     point cloud     excavation trajectory planning    

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Room temperature liquid metal: its melting point, dominating mechanism and applications

Junheng FU, Chenglin ZHANG, Tianying LIU, Jing LIU

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 81-104 doi: 10.1007/s11708-019-0653-8

Abstract: The melting point is a typical parameter to describe the peculiarity of LM, and a pivotal factor to considerTherefore, the theoretical exploration into the melting point of LM is an essential issue, which can

Keywords： melting point     liquid metal     crystal     thermodynamics     molecular dynamics    

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Title Author Date Type Operation

fraction induced by interaction burning of tri-symmetric propane fires in open space based on weighted multi-point

Jie JI, Junrui DUAN, Huaxian WAN

Journal Article

Fundamental frequency and testing mode of complicated elastic clamped-plate vibration

QI Hongyuan, GUAN Yiduo

Journal Article

Optimization of controlled mechanism based on generalized inverse method

YANG Jin-tang, KONG Jian-yi, XIONG He-gen, JIANG Guo-zhang, LI Gong-fa

Journal Article

Approximation of structural damping and input excitation force

Mohammad SALAVATI

Journal Article

A multiscale-contour-based interpolation framework for generating a time-varying quasi-dense point cloud

Chu-hua HUANG,Dong-ming LU,Chang-yu DIAO

Journal Article

Solving multi-objective optimal power flow problem considering wind-STATCOM using differential evolution

Belkacem MAHDAD, K. SRAIRI

Journal Article

Simulation Research on PWM Control in Excitation System of Generator

Jia Guixi,Xu Wei,Guo Baoyue,Zhang Chentang

Journal Article

A subband excitation substitute based scheme for narrowband speech watermarking

Wei LIU, Ai-qun HU

Journal Article

STRENGTHENING NON-POINT SOURCE POLLUTION CONTROL TO PROMOTE AGRICULTURAL GREEN DEVELOPMENT

Journal Article

Multi-objective particle swarm cooperative optimization algorithm for state parameters

Ding Lei,Wu Min,She Jinhua,Duan Ping

Journal Article

Multi-View Point-Based Registration for Native Knee Kinematics Measurement with Feature Transfer Learning

Cong Wang, Shuaining Xie, Kang Li, Chongyang Wang, Xudong Liu, Liang Zhao, Tsung-Yuan Tsai

Journal Article

Design of Microstructure Parameters on a Small Multi-Throttle Aerostatic Guideway in Photolithography

Zhongpu Wen,  Jianwei Wu,  Kunpeng Xing, Yin Zhang,  Jiean Li,  Jiubin Tan

Journal Article

Trajectory planning of mobile robots using indirect solution of optimal control method in generalized point-to-point

M. NAZEMIZADEH, H. N. RAHIMI, K. AMINI KHOIY

Journal Article

Toward autonomous mining: design and development of an unmanned electric shovel via point cloud-based

Journal Article

Room temperature liquid metal: its melting point, dominating mechanism and applications

Junheng FU, Chenglin ZHANG, Tianying LIU, Jing LIU

Journal Article