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Novel method of constructing generalized Hoberman sphere mechanisms based on deployment axes

Xuemin SUN, Yan-An YAO, Ruiming LI

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1,   Pages 89-99 doi: 10.1007/s11465-019-0567-5

Abstract: First, the constraint conditions for inserting GAEs II into deployment axes to form a loop are givenThe angle constraint conditions of the deployment axes are obtained through a series of linear equationsSecond, the connection conditions of two GAEs II loops that share a common deployable center are discussedspiral-like axes are constructed in accordance with the given arrangement of deployment axes that satisfy the constraintconditions to verify the feasibility of the proposed method.

Keywords： deployable mechanism     type II generalized angulated elements     Hoberman sphere mechanism     deployment axes     constraintconditions    

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Technology and system of constraint programming for industry production scheduling

Yarong CHEN, Zailin GUAN, Yunfang PENG, Xinyu SHAO, Muhammad HASSEB

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 455-464 doi: 10.1007/s11465-010-0106-x

Abstract: The use of techniques and system of constraint programming enables the implementation of precise, flexibleThis paper systematically introduces the constraint modeling and solving technology for production schedulingWe trend of some concrete technology, such as modeling, search, constraint propagation, consistency,and optimization of constraint programming for scheduling problems.application analysis, a generic application framework for real-life scheduling based on commercial constraint

Keywords： constraint programming     production scheduling     constraint propagation     search     consistency     optimization    

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Recent development in low-constraint fracture toughness testing for structural integrity assessment of

Jidong KANG, James A. GIANETTO, William R. TYSON

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 546-553 doi: 10.1007/s11465-018-0501-2

Abstract: Such a test provides high constraint and therefore conservative fracture toughness results.However, for girth welds in service, defects are usually subjected to primarily tensile loading where the constraintLow-constraint toughness tests represent more realistic loading conditions for girth weld defects, andIn this review, we present recent developments in low-constraint fracture toughness testing, specifically

Keywords： fracture toughness     constraint effect     single-edge-notched tension test     pipeline     structural integrity assessment    

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Development of rocking constraint device with vertical damping capacity for three-dimensional base-isolated

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 350-367 doi: 10.1007/s11709-022-0923-0

Abstract: A new rocking constraint device (RCD) is developed for three-dimensional (3D) base-isolated frame structuresinstalled outside the cylinders when the superstructure undergoes translational motion, and rocking constraintTheoretical formulas for calculating the damping and rocking constraint stiffness of the RCD are proposedtests are conducted at different loading frequencies and amplitudes to verify the damping and rocking constraintloading frequency, the average vertical stiffness of the two cylinders, which determines the rocking constraint

Keywords： three-dimensional isolation     rocking behavior     rocking constraint device     replaceable damping component    

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Research on constraint-based virtual assembly technologies

YANG Rundang, WU Dianliang, FAN Xiumin, YAN Juanqi

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2,   Pages 243-249 doi: 10.1007/s11465-007-0043-5

Abstract: To realize a constraint-based virtual assembly operation, the unified representations of the assemblyconstraint, the equivalent relation between the constraint and the degree of freedom (DOF), and theSeveral algorithms about the constraint treatment are submitted.Second, to satisfy the new constraint, according to the positing solving algorithm, the position andExperiments have indicated that these algorithms have well supported constraint treatments in the IVAE

Keywords： movement DOF     recognition algorithm     assembly     orientation     combination    

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Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 593-606 doi: 10.1007/s11465-021-0636-4

Abstract: for the continuum topology optimization of transient vibration problem with maximum dynamic response constraintaggregated index in the form of an integral function is presented to cope with the maximum response constraint

Keywords： topology optimization     solid isotropic material with penalization     transient response     aggregation function     second-order Arnoldi reduction    

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Fast removal of ocular artifacts from electroencephalogram signals using spatial constraint independent

Bang-hua YANG,Liang-fei HE,Lin LIN,Qian WANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 6,   Pages 486-496 doi: 10.1631/FITEE.1400299

Abstract: To remove ocular artifacts from EEG in brain-computer interfaces (BCIs), a method named spatial constraintIn the second stage, first, SCICA applies exact artifact ICs obtained in the first stage as a constraintThese extracted ICs are called spatial constraint ICs (SC-ICs).

Keywords： artifacts     Electroencephalogram (EEG)     Electrooculogram (EOG)     Brain-computer interface (BCI)     Spatial constraint    

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A Study About IC and IR in Principal-gent RelationshipUnder the Engineer Supervision Institution

Qin Xuan

Strategic Study of CAE 2007, Volume 9, Issue 4,   Pages 45-49

Abstract:

According to principal-agent theory, the Incentive compatibility constraint(IC)and the participation constraint (IR) in principal-gent relationship between employer and engineerThe conclusions are drawn:The incentive compatibility constraint (IC) is more important than participationconstraint (IR), If the mechanism doesn't satisfy the needs of IC, then it will be inefficient.

Keywords： engineer supervision     employer     engineer     principal-gent     incentive compatibility constraint(IC)     participationconstraint(IR)    

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Changes of ecological conditions induced by rock tunneling in Laoshan Mountain area

LI Xiaozhao, ZHAO Xiaobao, WANG Zhongsheng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 366-370 doi: 10.1007/s11709-008-0056-0

Abstract: Through field investigation, this paper examined the changes of ecological conditions induced by tunnelThe changed ecological conditions are beneficial for the settlement and growth of some herb and shrub

Keywords： supplement     fragmentation     reference     tunneling activity     vegetation situation    

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Research on the influence of contact surface constraint on mechanical properties of rock-concrete composite

Baoyun ZHAO, Yang LIU, Dongyan LIU, Wei HUANG, Xiaoping WANG, Guibao YU, Shu LIU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 322-330 doi: 10.1007/s11709-019-0594-7

Abstract: The influence of contact surface constraint on the mechanical properties of rock-concrete composite specimensResults show that the stress and strain of rock-concrete composite specimens with contact surface constraintAveragely, compared with composite specimens without the contact surface, the existence of contact surface constraintof the fracture surface, the theory of microcrack development is used to explain the contact surface constraint

Keywords： rock-concrete     composite specimen     contact surface     mechanical properties     failure mechanism    

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risk explicit interval linear programming approach for optimal watershed load reduction with objective-constraint

Pingjian YANG,Feifei DONG,Yong LIU,Rui ZOU,Xing CHEN,Huaicheng GUO

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 129-140 doi: 10.1007/s11783-014-0683-8

Abstract: demonstrate that, by applying the refined REILP, it is possible to obtain solutions that preserve the same constraint

Keywords： refined risk explicit interval linear programming     decision making     objective-constraint uncertainty tradeoff    

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Chord error constraint based integrated control strategy for contour error compensation

Tie ZHANG, Caicheng WU, Yanbiao ZOU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 645-658 doi: 10.1007/s11465-020-0601-7

Abstract: positions, an integrated control strategy of cross-coupling contour error compensation based on chord error constraintMoreover, a feed rate regulator based on the chord error constraint is proposed, which performs speedplanning with the maximum feed rate allowed by the large curvature position as the constraint condition

Keywords： cross-coupling controller     contour error     tracking error     position error compensator     feed rate regulator    

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Multi-scale UDCT dictionary learning based highly undersampled MR image reconstruction using patch-based constraint

Min YUAN,Bing-xin YANG,Yi-de MA,Jiu-wen ZHANG,Fu-xiang LU,Tong-feng ZHANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 12,   Pages 1069-1087 doi: 10.1631/FITEE.1400423

Abstract: Corresponding to this brand-new sparsity model, we modify the constraint splitting augmented Lagrangianshrinkage algorithm (C-SALSA) as patch-based C-SALSA (PB C-SALSA) to solve the constraint optimization

Keywords： MRI)     Uniform discrete curvelet transform (UDCT)     Multi-scale dictionary learning (MSDL)     Patch-based constraint    

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Assessing artificial neural network performance for predicting interlayer conditions and layer modulus

Lingyun YOU, Kezhen YAN, Nengyuan LIU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 487-500 doi: 10.1007/s11709-020-0609-4

Abstract: evaluate the performance of the artificial neural network (ANN) approach for predicting interlayer conditionsTo achieve this goal, two ANN based back-calculation models were proposed to predict the interlayer conditionsback-calculation model developed with ANN could be used to accurately predict layer modulus and interlayer conditions

Keywords： asphalt pavement     interlayer conditions     finite element method     artificial neural network     back-calculation    

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Influence of initial curing conditions and exposure environments on chloride migration in concrete using

Wen XUE, Weiliang JIN, Hiroshi YOKOTA,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 348-353 doi: 10.1007/s11709-010-0077-3

Abstract: To investigate the influence of initial curing conditions and exposure environments on chloride ions’ migration in concrete, the specimens that were cured in different conditions and placed in severalThe results indicated that the initial curing conditions and the wet-dry interval of external environments

Keywords： durability     effective diffusion coefficient     steady-state     migration test    

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Title Author Date Type Operation

Novel method of constructing generalized Hoberman sphere mechanisms based on deployment axes

Xuemin SUN, Yan-An YAO, Ruiming LI

Journal Article

Technology and system of constraint programming for industry production scheduling

Yarong CHEN, Zailin GUAN, Yunfang PENG, Xinyu SHAO, Muhammad HASSEB

Journal Article

Recent development in low-constraint fracture toughness testing for structural integrity assessment of

Jidong KANG, James A. GIANETTO, William R. TYSON

Journal Article

Development of rocking constraint device with vertical damping capacity for three-dimensional base-isolated

Journal Article

Research on constraint-based virtual assembly technologies

YANG Rundang, WU Dianliang, FAN Xiumin, YAN Juanqi

Journal Article

Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme

Journal Article

Fast removal of ocular artifacts from electroencephalogram signals using spatial constraint independent

Bang-hua YANG,Liang-fei HE,Lin LIN,Qian WANG

Journal Article

A Study About IC and IR in Principal-gent RelationshipUnder the Engineer Supervision Institution

Qin Xuan

Journal Article

Changes of ecological conditions induced by rock tunneling in Laoshan Mountain area

LI Xiaozhao, ZHAO Xiaobao, WANG Zhongsheng

Journal Article

Research on the influence of contact surface constraint on mechanical properties of rock-concrete composite

Baoyun ZHAO, Yang LIU, Dongyan LIU, Wei HUANG, Xiaoping WANG, Guibao YU, Shu LIU

Journal Article

risk explicit interval linear programming approach for optimal watershed load reduction with objective-constraint

Pingjian YANG,Feifei DONG,Yong LIU,Rui ZOU,Xing CHEN,Huaicheng GUO

Journal Article

Chord error constraint based integrated control strategy for contour error compensation

Tie ZHANG, Caicheng WU, Yanbiao ZOU

Journal Article

Multi-scale UDCT dictionary learning based highly undersampled MR image reconstruction using patch-based constraint

Min YUAN,Bing-xin YANG,Yi-de MA,Jiu-wen ZHANG,Fu-xiang LU,Tong-feng ZHANG

Journal Article

Assessing artificial neural network performance for predicting interlayer conditions and layer modulus

Lingyun YOU, Kezhen YAN, Nengyuan LIU

Journal Article

Influence of initial curing conditions and exposure environments on chloride migration in concrete using

Wen XUE, Weiliang JIN, Hiroshi YOKOTA,

Journal Article