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framework for underground structures in layered ground under inclined P-SV waves using stiffness matrix and domainreduction methods

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 10-24 doi: 10.1007/s11709-022-0904-3

Abstract: The free-field responses are first obtained using the stiffness matrix method based on plane-wave assumptionsThen, the domain reduction method was employed to reproduce the wavefield in the numerical model of the

Keywords： underground structures     seismic response     stiffness matrix method     domain reduction method     P-SV waves    

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Time-domain and frequency-domain approaches to identification of bridge flutter derivatives

Zhengqing CHEN

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 173-179 doi: 10.1007/s11709-009-0034-1

Abstract: method and a frequency-domain method.It was shown that all the flutter derivatives of the thin-plate model identified with the frequency-domainmethod and time-domain method, respectively, agree very well.More precisely, the frequency-domain method usually results in smooth curves of the flutter derivativesThe formulation of time-domain method makes the identification results of flutter derivatives relatively

Keywords： long-span bridges     wind-induced vibration     flutter derivatives     forced vibration test     time-domain method     frequency-domain method    

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Damage identification in connections of moment frames using time domain responses and an optimizationmethod

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 851-866 doi: 10.1007/s11709-021-0739-3

Abstract: In this study, an optimization-based method for joint damage identification of moment frames using thetime-domain responses is introduced.To assess the capability of the proposed method, two numerical examples via different damage scenariosThen, a comparison between the proposed method and the existing damage identification method is providedThe outcomes reveal the high efficiency of the proposed method for finding the severity and location

Keywords： damage identification     beam-to-column connection     time-domain response     optimization    

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Analytical method of capsizing probability in the time domain for ships in the random beam seas

LIU Liqin, TANG Yougang, LI Hongxia

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 361-366 doi: 10.1007/s11709-007-0048-5

Abstract: The random rolling differential equation was solved in the time domain by applying the harmonic accelerationmethod and by synthetically considering the instantaneous state of ships and the narrowband wave energythe survival probabilities of ships in random seas can be predicted quantitatively by the proposed method

Keywords： different     survival probability     different significant     nonlinear differential     narrowband    

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Improved numerical method for time domain dynamic structure-foundation interaction analysis based onscaled boundary finite element method

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: Based on the reduced set of base function in scaled boundary finite element method (SBFEM), an improvedtime domain numerical approach for the dynamic structure-foundation interaction analysis was proposed

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

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Border-search and jump reduction method for size optimization of spatial truss structures

Babak DIZANGIAN, Mohammad Reza GHASEMI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 123-134 doi: 10.1007/s11709-018-0478-2

Abstract: This paper proposes a sensitivity-based border-search and jump reduction method for optimum design ofSensitivity analysis is performed using numerical finite difference method.It shows that the proposed method is competitive with the other optimization methods with a significantreduction in number of analyses carried.

Keywords： optimum design     sensitivity analysis     reduction method     spatial trusses     OpenSees    

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Achieving air pollutant emission reduction targets with minimum abatement costs: An enterprise-levelallocation method with constraints of fairness and feasibility

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1459-6

Abstract:

• Quantification of efficiency and fairness of abatement allocation are optimized.

Keywords： Pollutant emission reduction allocation     Emission reduction measures     Total abatement cost     Economic    

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Development of an H reduction and moderate oxidation method for 3,5-dimethylpyridine hydrogenation in

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1807-1817 doi: 10.1007/s11705-022-2243-2

Abstract: The Ru/C catalyst prepared by impregnation method was used for hydrogenation of 3,5-dimethylpyridineTherefore, an in-situ H2 reduction and moderate oxidation method was developed to increaseMoreover, the influence of oxidation temperature on the developed method was investigated.The catalysts were characterized by Brunauer–Emmett–Teller method, hydrogen temperature programmed reductionThe developed in-situ H2 reduction and moderate oxidation method eliminated the step

Keywords： Ru/C catalyst     in-situ H2 reduction and moderate oxidation     in-situ reduction     non-in-situ reduction     hydrogenation of 3     5-dimethylpyridine    

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The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired

Gui-Rong Liu

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 456-477 doi: 10.1007/s11709-019-0519-5

Abstract:

The smoothed finite element method (S-FEM) was originated by G R Liu by combining some meshfree techniqueswith the well-established standard finite element method (FEM).

Keywords： computational method     finite element method     smoothed finite element method     strain smoothing technique     smoothing domain     weakened weak form     solid mechanics     softening effect     upper bound solution    

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Model reduction of contact dynamics simulation using a modified Lyapunov balancing method

Jianxun LIANG, Ou MA, Caishan LIU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 383-391 doi: 10.1007/s11465-011-0244-9

Abstract: Although many model reduction techniques have been available to improve the efficiency of finite elementThis paper presents a model reduction approach for finite-element based multibody contact dynamics simulation, based on a modified Lyapunov balanced truncation method.An example is presented to demonstrate that, by applying the model reduction the simulation process isThe performance of the method with respect to some influential factors such as element size, shape and

Keywords： contact dynamics     dynamic simulation     model reduction     finite element method    

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Efficient and selective electro-reduction of nitrobenzene by the nano-structured Cu catalyst preparedby an electrodeposited method via tuning applied voltage

Yali CHEN,Lu XIONG,Weikang WANG,Xing ZHANG,Hanqing YU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 897-904 doi: 10.1007/s11783-015-0782-1

Abstract: Selective reduction of nitrobenzene to aniline is beneficial to further efficient and cost-effectiveElectrochemical reduction is a promising method and Cu-based catalysts have been found to be an efficientCu catalysts with different morphologies were fabricated on Ti plate using a facile electrodepositon methodEffects of the working potential and initial nitrobenzene concentration on the selective reduction ofprepare highly efficient, cost-effective, and stable nano-structured electrocatalysts for pollutant reduction

Keywords： nitrobenzene     nano-structured Cu     electro-reduction     voltage-dependent electrodeposition     high selectivity    

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Entity and relation extraction with rule-guided dictionary as domain knowledge

Frontiers of Engineering Management   Pages 610-622 doi: 10.1007/s42524-022-0226-0

Abstract: Entity and relation extraction is an indispensable part of domain knowledge graph construction, whichcan serve relevant knowledge needs in a specific domain, such as providing support for product research, sales, risk control, and domain hotspot analysis.However, the performance of these methods degrades when they face domain-specific datasets.To address the problems above, this paper first introduced prior knowledge composed of domain dictionaries

Keywords： entity extraction     relation extraction     prior knowledge     domain rule    

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Terahertz time-domain spectroscopy of high-pressure flames

Jason BASSI, Mark STRINGER, Bob MILES, Yang ZHANG

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 123-133 doi: 10.1007/s11708-009-0033-x

Abstract: Laser spectroscopy in the visible and near infrared is widely used as a diagnostic tool for combustion devices, but this approach is difficult at high pressures within a sooty flame itself. High soot concentrations render flames opaque to visible light, but they remain transparent to far-infrared or terahertz (THz) radiation. The first far-infrared absorption spectra, to the best of our knowledge, of sooty, non-premixed, ethylene high-pressure flames covering the region of 0.2-2.5 THz is presented. A specially designed high-pressure burner which is optically accessible to THz radiation has been built allowing flame transmission measurements up to pressures of 1.6 MPa. Calculations of the theoretical combustion species absorption spectra in the 0.2-3 THz range have shown that almost all the observable features arise from H O. A few OH (1.84 and 2.51 THz), CH (2.58 THz), and NH (1.77 and 2.95 THz) absorption lines are also observable in principle. A large number of H O absorption lines are observed in the ground vibrational in a laminar non-premixed, sooty flame (ethylene) at pressures up to 1.6 MPa.

Keywords： terahertz time-domain spectroscopy     high-pressure flames     H2O absorption lines    

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The influencing factors of the WTP for the risk reduction of chemical industry accidents in China

Lei HUANG, Zhijuan SHAO, Weiliang BAO, Bailing DUAN, Jun BI, Zengwei YUAN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 6,   Pages 860-868 doi: 10.1007/s11783-012-0467-y

Abstract: To explore the factors that influence respondents’ willingness to pay (WTP) for the risk reduction ofThe mean WTP value increased as the magnitude of the risk reduction increased.The number of factors influencing the WTP decreased as the reduction level improved, and only the factorhad a significant influence on the WTP for a higher level (80%) of risk reduction.The cost for chemical safety management of Yancheng was calculated, and the optimized risk reduction

Keywords： risk perception     willingness to pay     contingent valuation method     risk management school of the environment    

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Dynamic parameterized learning for unsupervised domain adaptation Research Article

Runhua JIANG, Yahong HAN

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 11,   Pages 1616-1632 doi: 10.1631/FITEE.2200631

Abstract: enables neural networks to transfer from a labeled source domain to an unlabeled target domain by learningdomain-invariant representations.First, by exploring domain-level semantic knowledge, the dynamic alignment parameter is proposed, toBesides, for obtaining semantic-discriminative and domain-invariant representations, we propose to align

Keywords： Unsupervised domain adaptation     Optimization steps     Domain alignment     Semantic discrimination    

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Title Author Date Type Operation

framework for underground structures in layered ground under inclined P-SV waves using stiffness matrix and domainreduction methods

Journal Article

Time-domain and frequency-domain approaches to identification of bridge flutter derivatives

Zhengqing CHEN

Journal Article

Damage identification in connections of moment frames using time domain responses and an optimizationmethod

Journal Article

Analytical method of capsizing probability in the time domain for ships in the random beam seas

LIU Liqin, TANG Yougang, LI Hongxia

Journal Article

Improved numerical method for time domain dynamic structure-foundation interaction analysis based onscaled boundary finite element method

DU Jianguo, LIN Gao

Journal Article

Border-search and jump reduction method for size optimization of spatial truss structures

Babak DIZANGIAN, Mohammad Reza GHASEMI

Journal Article

Achieving air pollutant emission reduction targets with minimum abatement costs: An enterprise-levelallocation method with constraints of fairness and feasibility

Journal Article

Development of an H reduction and moderate oxidation method for 3,5-dimethylpyridine hydrogenation in

Journal Article

The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired

Gui-Rong Liu

Journal Article

Model reduction of contact dynamics simulation using a modified Lyapunov balancing method

Jianxun LIANG, Ou MA, Caishan LIU

Journal Article

Efficient and selective electro-reduction of nitrobenzene by the nano-structured Cu catalyst preparedby an electrodeposited method via tuning applied voltage

Yali CHEN,Lu XIONG,Weikang WANG,Xing ZHANG,Hanqing YU

Journal Article

Entity and relation extraction with rule-guided dictionary as domain knowledge

Journal Article

Terahertz time-domain spectroscopy of high-pressure flames

Jason BASSI, Mark STRINGER, Bob MILES, Yang ZHANG

Journal Article

The influencing factors of the WTP for the risk reduction of chemical industry accidents in China

Lei HUANG, Zhijuan SHAO, Weiliang BAO, Bailing DUAN, Jun BI, Zengwei YUAN

Journal Article

Dynamic parameterized learning for unsupervised domain adaptation

Runhua JIANG, Yahong HAN

Journal Article