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Simulation of grid connection and maximum power point tracking control of brushless doubly-fed generator

Hicham SERHOUD, Djilani BENATTOUS

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 380-387 doi: 10.1007/s11708-013-0252-z

Abstract: model in a common synchronous reference frame of the brushless doubly-fed generator (BDFG), the grid connection

Keywords： brushless doubly-fed generator (BDFG)     modeling     grid connection control     back-to-back pulse-width modulation    

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A Feasibility Study of Power Generation from Sewage Using a Hollowed Pico-Hydraulic Turbine

Tomomi Uchiyama, Satoshi Honda, Tomoko Okayama, Tomohiro Degawa

Engineering 2016, Volume 2, Issue 4,   Pages 510-517 doi: 10.1016/J.ENG.2016.04.007

Abstract: First, the sewage flow rate at two connection points to the Toyogawa River-Basin Sewerage, Japan, wasinvestigated via laboratory experiments that supposed the turbine to be installed in the sewage pipe at the connectionThis study indicates that the connection points have hydraulic potential that can be used for power generationpico-hydraulic turbine can be usefully employed for power generation from sewage flowing in the pipe at the connection

Keywords： Pico-hydraulic turbine     Sewage     Power generation     Connection point     Hydraulic potential    

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Risk evaluation for the task transfer of an aircraft maintenance program based on a multielement connection

Frontiers of Engineering Management doi: 10.1007/s42524-023-0282-0

Abstract: A multielement connection number-based evaluative model is employed to characterize decision-specificMoreover, the paper conducts a temporal risk trend analysis founded on partial connection numbers of

Keywords： risk evaluation     maintenance steering group     analytic network process     task transfer     maintenance program    

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Mouth the mirror of lungs: where does the connection lie?

Jananni Muthu,Sivaramakrishnan Muthanandam,Jaideep Mahendra

Frontiers of Medicine 2016, Volume 10, Issue 4,   Pages 405-409 doi: 10.1007/s11684-016-0476-5

Abstract:

Periodontitis is the chronic destructive disease of the periodontium (Gums) caused by host bacterial interactions. The effect of such host bacterial interactions in oral cavity also evokes a systemic response. Numerous studies have found common mechanisms of destruction for periodontal diseases and other chronic diseases like diabetes mellitus, atherosclerosis, respiratory diseases, and adverse pregnancy outcomes. Oral colonization by respiratory pathogens appears to be a risk factor for development of respiratory diseases and oral interventions aimed at reducing oral bacterial count have resulted in reduced incidence of these reparatory illness. This reflects the importance of oral hygiene among patients with respiratory illness. This review highlights the association between periodontal diseases and respiratory diseases.

Keywords： periodontitis     respiratory diseases     acute pneumonia     COPD    

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Static behavior of planar intersecting CFST connection in diagrid structure

Ling LI, Xianzhong ZHAO, Ke KE

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 355-365 doi: 10.1007/s11709-011-0125-7

Abstract: Intersecting connection plays an important role in the new diagrid structural system for high-rise buildingsTo investigate the static behavior of the intersecting connection of concrete-filled steel tubular (CFST) columns, a typical reduced-scale planner connection specimen is tested under monotonic axial compressionTest and simulation results prove that, intersecting connection can develop fully plastic deformationCapacity estimation method for planar intersecting CFST connection is proposed basing on the capacity

Keywords： diagrid structure     concrete-filled steel tube     planar intersecting connection     experimental research     mechanism    

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Investigation of fatigue resistance of fillet-welded tube connection details for sign support structures

Hyungjoo CHOI, Husam NAJM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 199-214 doi: 10.1007/s11709-019-0592-9

Abstract: Stiffened and unstiffened fillet-welded tube-to-transverse plate connection details are widely used forThe main objective of this study is to evaluate fatigue resistance of fillet-welded tube connection detailsThe results of this investigation provides fatigue resistance of fillet-welded connection details inthe form of fatigue life, fatigue damage and safety factor for various connection parameters and structural

Keywords： fatigue     weld connections     base plate     fillet welds    

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An innovative model for predicting the displacement and rotation of column-tree moment connection under

Mohammad Ali NAGHSH, Aydin SHISHEGARAN, Behnam KARAMI, Timon RABCZUK, Arshia SHISHEGARAN, Hamed TAGHAVIZADEH, Mehdi MORADI

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 194-212 doi: 10.1007/s11709-020-0688-2

Abstract: carried out nonlinear finite element simulations to predict the performance of a column-tree moment connection

Keywords： column-tree moment connection     Finite element model     parametric study     fire     regression models     gene expression    

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Effect of eccentricity in reinforced concrete beam-column-slab connection under cyclic loading

Rooh ULLAH, Amjad NASEER, Muhammad FAHIM, Mohammad ASHRAF, Eid BADSHAH

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 390-398 doi: 10.1007/s11709-021-0690-3

Abstract: The damage pattern, performance levels, displacement ductility ( ), energy dissipation, and connection

Keywords： corner connection     eccentricity     strength degradation     stiffness degradation     energy dissipation     performance    

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Intelligent Manufacturing of Special Equipment Based on Intelligent Connection

Liu Sanjiang, Chen Zuzhi, Shi Kun, Li Guanghai

Strategic Study of CAE 2020, Volume 22, Issue 6,   Pages 143-150 doi: 10.15302/J-SSCAE-2020.06.019

Abstract: Based on this, intelligent connection is introduced as a technology path for developing intelligent manufacturingof special equipment, and the concept of intelligent connection is further analyzed.Furthermore, the key tasks for future development are building an intelligent connection network of special

Keywords： special equipment     intelligent manufacturing     intelligent connection     parallel development    

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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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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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Development of Intelligent Connection Computing Network Technologies

Li Dan , Hu Yuxiang , Pan Heng , Zhang Jianhui , Wu Jiangxing

Strategic Study of CAE 2023, Volume 25, Issue 6,   Pages 39-48 doi: 10.15302/J-SSCAE-2023.06.014

Abstract: Therefore, it is urgent to understand the developmental trend of the intelligent connection computing

Keywords： intelligent connection computing network technology     diversified protocol     integration of network     storage    

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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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DITCHES AND PONDS CAN BE THE SOURCES OR SINKS OF NON-POINT SOURCE POLLUTION: OBSERVATIONS IN AN UPLAND

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 607-626 doi: 10.15302/J-FASE-2023517

Abstract: agroecosystems, ditches and ponds benefit the irrigation and drainage, as well as intercepting non-point

Keywords： ditches     ponds     non-point source pollution     mountainous areas     nitrogen     phosphorus    

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Title Author Date Type Operation

Simulation of grid connection and maximum power point tracking control of brushless doubly-fed generator

Hicham SERHOUD, Djilani BENATTOUS

Journal Article

A Feasibility Study of Power Generation from Sewage Using a Hollowed Pico-Hydraulic Turbine

Tomomi Uchiyama, Satoshi Honda, Tomoko Okayama, Tomohiro Degawa

Journal Article

Risk evaluation for the task transfer of an aircraft maintenance program based on a multielement connection

Journal Article

Mouth the mirror of lungs: where does the connection lie?

Jananni Muthu,Sivaramakrishnan Muthanandam,Jaideep Mahendra

Journal Article

Static behavior of planar intersecting CFST connection in diagrid structure

Ling LI, Xianzhong ZHAO, Ke KE

Journal Article

Investigation of fatigue resistance of fillet-welded tube connection details for sign support structures

Hyungjoo CHOI, Husam NAJM

Journal Article

An innovative model for predicting the displacement and rotation of column-tree moment connection under

Mohammad Ali NAGHSH, Aydin SHISHEGARAN, Behnam KARAMI, Timon RABCZUK, Arshia SHISHEGARAN, Hamed TAGHAVIZADEH, Mehdi MORADI

Journal Article

Effect of eccentricity in reinforced concrete beam-column-slab connection under cyclic loading

Rooh ULLAH, Amjad NASEER, Muhammad FAHIM, Mohammad ASHRAF, Eid BADSHAH

Journal Article

Intelligent Manufacturing of Special Equipment Based on Intelligent Connection

Liu Sanjiang, Chen Zuzhi, Shi Kun, Li Guanghai

Journal Article

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

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

Development of Intelligent Connection Computing Network Technologies

Li Dan , Hu Yuxiang , Pan Heng , Zhang Jianhui , Wu Jiangxing

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

DITCHES AND PONDS CAN BE THE SOURCES OR SINKS OF NON-POINT SOURCE POLLUTION: OBSERVATIONS IN AN UPLAND

Journal Article