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Past review, current progress, and challenges ahead on the cocktail party problem Review

Yan-min QIAN, Chao WENG, Xuan-kai CHANG, Shuai WANG, Dong YU

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 1,   Pages 40-63 doi: 10.1631/FITEE.1700814

Abstract: in the cocktail party environment, and describe the conventional single-channel techniques such as computationalauditory scene analysis (CASA), non-negative matrix factorization (NMF) and generative models, the conventional

Keywords： Cocktail party problem     Computational auditory scene analysis     Non-negative matrix factorization     Permutation    

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Beyond bag of latent topics: spatial pyramid matching for scene category recognition

Fu-xiang LU,Jun HUANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 10,   Pages 817-828 doi: 10.1631/FITEE.1500070

Abstract: We propose a heterogeneous, mid-level feature based method for recognizing natural scene categories.means of spatial pyramid, while the latent topics are obtained by using probabilistic latent semantic analysisdescriptors used in the bag-of-words model, the proposed feature can make further improvement for diverse sceneprod-max rule to combine information coming from multiple sources and assigns the unknown image to the sceneExperimental results on three benchmark scene datasets show that the proposed method exceeds most state-of-the-art

Keywords： Scene category recognition     Probabilistic latent semantic analysis     Bag-of-words     Adaptive boosting    

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Computational fluid dynamic analysis of flutter characteristics for self-anchored suspension bridges

ZHU Zhiwen, WANG Zhaoxiang, CHEN Zhengqing

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 267-273 doi: 10.1007/s11709-008-0034-6

Abstract: This paper outlines the essentials and procedures of computational fluid dynamics (CFD) simulation applicable

Keywords： discretization     computational     description     Self-anchored Suspension     simulation applicable    

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Parametric computational study on butterfly-shaped hysteretic dampers

Ali Reza FARZAMPOUR, Matthew Roy EATHERTON

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1214-1226 doi: 10.1007/s11709-019-0550-6

Abstract: A parametric computational study is conducted to investigate the shear yielding, flexural yielding, andvalidating the accuracy of the finite element (FE) modeling approach against previous experiments, 112 computational

Keywords： structural fuse     hysteretic damper     finite element analysis     energy dissipation     initial imperfection     butterfly-shaped    

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Earthquake analysis of arch and gravity dams including the effects of foundation inhomogeneity

LIN Gao, DU Jianguo, HU Zhiqiang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 41-50 doi: 10.1007/s11709-007-0004-4

Abstract: dam canyon are usually very complicated; however, in the literature, the damfoundation interaction analysisIn order to satisfy the similarity requirement of SBFEM and simplify the computational effort, a subdomain

Keywords： selection     interlayer     damfoundation interaction     Geological     computational    

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Numerical analysis on heat transfer enhancement by longitudinal vortex based on field synergy principle

WU Junmei, TAO Wenquan

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 365-369 doi: 10.1007/s11708-007-0055-1

Abstract: In addition, the computational evaluations indicate that the heat transfer enhancement of delta winglet

Keywords： computational     inherent mechanism     staggered     decrease     transfer surface    

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The computational fluid dynamic modeling of downwash flow field for a six-rotor UAV

Yongjun ZHENG, Shenghui YANG, Xingxing LIU, Jie WANG, Tomas NORTON, Jian CHEN, Yu TAN

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 2,   Pages 159-167 doi: 10.15302/J-FASE-2018216

Abstract: The downwash flow field of the multi-rotor unmanned aerial vehicle (UAV), formed by propellers during operation, has a significant influence on the deposition, drift and distribution of droplets as well as the spray width of the UAV for plant protection. To study the general characteristics of the distribution of the downwash airflow and simulate the static wind field of multi-rotor UAVs in hovering state, a 3D full-size physical model of JF01-10 six-rotor plant protection UAV was constructed using SolidWorks. The entire flow field surrounding the UAV and the rotation flow fields around the six rotors were established in UG software. The physical model and flow fields were meshed using unstructured tetrahedral elements in ANSYS software. Finally, the downwash flow field of UAV was simulated. With an increased hovering height, the ground effect was reduced and the minimum current velocity increased initially and then decreased. In addition, the spatial proportion of the turbulence occupied decreased. Furthermore, the appropriate operational hovering height for the JF01-10 is considered to be 3 m. These results can be applied to six-rotor plant protection UAVs employed in pesticide spraying and spray width detection.

Keywords： CFD simulation     downwash flow field     numerical analysis     plant protection     six-rotor UAV    

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Design and analysis of a new high frequency double-servo direct drive rotary valve

Muzhi ZHU,Shengdun ZHAO,Jingxiang LI

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 344-350 doi: 10.1007/s11465-016-0406-x

Abstract: In addition, a computational fluid dynamics (CFD) method based on Fluent was conducted to verify the

Keywords： direct drive rotary valve     computational fluid dynamics (CFD)     flow regulation    

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Detecting interaction/complexitywithin crowd movements using braid entropy Research Papers

Murat AKPULAT, Murat EKİNCİ

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 6,   Pages 849-861 doi: 10.1631/FITEE.1800313

Abstract:

The segmentation of moving and non-moving regions in an image within the field of crowd analysis is

Keywords： Crowd behavior     Motion segmentation     Motion entropy     Crowd scene analysis     Complexity detection     Braid entropy    

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Dynamics analysis of bladder-urethra system based on CFD

Qinghua JIN, Xiaojun ZHANG, Xiaoyang LI, Jianliu WANG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 336-340 doi: 10.1007/s11465-010-0027-8

Abstract: A mathematical model for a bladder-urethra system can provide basic analysis for the disabled urethraBased on computational fluid dynamics (CFD), we developed a three-dimensional urodynamic bladder-urethraThe computational results show that a dead-water zone and the zone of secondary flow occur, independentonly improve urinary incontinence surgery for clinicians, but can also provide a basis for theoretical analysis

Keywords： bladder-urethra system     stress urinary incontinence (SUI)     computational fluid dynamics (CFD)     urodynamics    

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Challenges of high dam construction to computational mechanics

ZHANG Chuhan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 12-33 doi: 10.1007/s11709-007-0002-6

Abstract: These include but are not limited to: stress and stability analysis of dam foundations under externalSome examples demonstrating successful utilizations of computational mechanics in high dam engineeringare given, including seismic nonlinear analysis for arch dam foundations, nonlinear fracture analysisof arch dams under reservoir loads, and failure analysis of arch dam-foundations.To make more use of the computational mechanics in high dam engineering, it is pointed out that much

Keywords： reservoir     engineering     hydro-power development     state-of-the-art computational     earthquake    

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Pressure drop analysis on the positive half-cell of a cerium redox flow battery using computational fluid

Fernando F. Rivera, Berenice Miranda-Alcántara, Germán Orozco, Carlos Ponce de León, Luis F. Arenas

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 399-409 doi: 10.1007/s11705-020-1934-9

Abstract: Description of electrolyte fluid dynamics in the electrode compartments by mathematical models can be a powerful tool in the development of redox flow batteries (RFBs) and other electrochemical reactors. In order to determine their predictive capability, turbulent Reynolds-averaged Navier-Stokes (RANS) and free flow plus porous media (Brinkman) models were applied to compute local fluid velocities taking place in a rectangular channel electrochemical flow cell used as the positive half-cell of a cerium-based RFB for laboratory studies. Two different platinized titanium electrodes were considered, a plate plus a turbulence promoter and an expanded metal mesh. Calculated pressure drop was validated against experimental data obtained with typical cerium electrolytes. It was found that the pressure drop values were better described by the RANS approach, whereas the validity of Brinkman equations was strongly dependent on porosity and permeability values of the porous media.

Keywords： CFD simulation     porous media     porous electrode     pressure drop     redox flow battery    

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Computational Aspects of Dam Risk Analysis: Findings and Challenges

Ignacio Escuder-Bueno,Guido Mazzà,Adrián Morales-Torres,Jesica T. Castillo-Rodríguez

Engineering 2016, Volume 2, Issue 3,   Pages 319-324 doi: 10.1016/J.ENG.2016.03.005

Abstract:

In recent years, risk analysis techniques have proved to be a useful tool to inform dam safety managementWorkshops organized by the International Commission on Large Dams Technical Committee on “ComputationalAspects of Analysis and Design of Dams.Next, in 2013, the discussion focused on the computational challenges of the estimation of consequencesin dam risk analysis.

Keywords： Dams     Risk analysis     Computational methods     Safety management     Hydraulic structures    

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Numerical analysis of rotating stall characteristics in vaneless diffuser with large width-radius ratio

GAO Chuang, GU Chuangang, WANG Tong, DAI Zhengyuan

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 457-460 doi: 10.1007/s11708-008-0071-9

Abstract: Computational results show that a different mechanism does exist for diffusers with large width-radius

Keywords： Comparison     Computational     two-dimensional     influence     different mechanism    

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Improved numerical method for time domain dynamic structure-foundation interaction analysis based on

DU Jianguo, LIN Gao

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 336-342 doi: 10.1007/s11709-008-0054-2

Abstract: SBFEM), an improved time domain numerical approach for the dynamic structure-foundation interaction analysiswas found that a higher degree of reduced set of base functions resulted in a significant increase of computationalbe concluded that the proposed approach is suitable for large-scale structure-foundation interaction analysis

Keywords： structure-foundation interface     computational efficiency     different     suitable     numerical approach    

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Title Author Date Type Operation

Past review, current progress, and challenges ahead on the cocktail party problem

Yan-min QIAN, Chao WENG, Xuan-kai CHANG, Shuai WANG, Dong YU

Journal Article

Beyond bag of latent topics: spatial pyramid matching for scene category recognition

Fu-xiang LU,Jun HUANG

Journal Article

Computational fluid dynamic analysis of flutter characteristics for self-anchored suspension bridges

ZHU Zhiwen, WANG Zhaoxiang, CHEN Zhengqing

Journal Article

Parametric computational study on butterfly-shaped hysteretic dampers

Ali Reza FARZAMPOUR, Matthew Roy EATHERTON

Journal Article

Earthquake analysis of arch and gravity dams including the effects of foundation inhomogeneity

LIN Gao, DU Jianguo, HU Zhiqiang

Journal Article

Numerical analysis on heat transfer enhancement by longitudinal vortex based on field synergy principle

WU Junmei, TAO Wenquan

Journal Article

The computational fluid dynamic modeling of downwash flow field for a six-rotor UAV

Yongjun ZHENG, Shenghui YANG, Xingxing LIU, Jie WANG, Tomas NORTON, Jian CHEN, Yu TAN

Journal Article

Design and analysis of a new high frequency double-servo direct drive rotary valve

Muzhi ZHU,Shengdun ZHAO,Jingxiang LI

Journal Article

Detecting interaction/complexitywithin crowd movements using braid entropy

Murat AKPULAT, Murat EKİNCİ

Journal Article

Dynamics analysis of bladder-urethra system based on CFD

Qinghua JIN, Xiaojun ZHANG, Xiaoyang LI, Jianliu WANG,

Journal Article

Challenges of high dam construction to computational mechanics

ZHANG Chuhan

Journal Article

Pressure drop analysis on the positive half-cell of a cerium redox flow battery using computational fluid

Fernando F. Rivera, Berenice Miranda-Alcántara, Germán Orozco, Carlos Ponce de León, Luis F. Arenas

Journal Article

Computational Aspects of Dam Risk Analysis: Findings and Challenges

Ignacio Escuder-Bueno,Guido Mazzà,Adrián Morales-Torres,Jesica T. Castillo-Rodríguez

Journal Article

Numerical analysis of rotating stall characteristics in vaneless diffuser with large width-radius ratio

GAO Chuang, GU Chuangang, WANG Tong, DAI Zhengyuan

Journal Article

Improved numerical method for time domain dynamic structure-foundation interaction analysis based on

DU Jianguo, LIN Gao

Journal Article