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Progressive collapse of 2D reinforced concrete structures under sudden column removal

El Houcine MOURID, Said MAMOURI, Adnan IBRAHIMBEGOVIC

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6, Pages 1387-1402 doi: 10.1007/s11709-020-0645-0

Abstract: mechanism creation, MBS dynamic analysis and dynamic contact simulation, the latter is solved by using conserving/decaying scheme to handle the stiff nonlinear dynamic equations.

Keywords： failure mechanism MBS dynamic analysis gravity loads structure-ground contact structure-structure contact energyconserving/decaying scheme

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The pump storage lant & sustainable development

Cao Chusheng

Strategic Study of CAE 2009, Volume 11, Issue 9, Pages 4-7

Abstract:

As they provide the superiorities of the peak clipping and valley filling, the running stability of all the power units and the quality of the electricity of the power grid may be refined. It is notable that as a large amount of the discharging harmful gas CO2 etc. will be reduced, it is very favorable to the ecological environment and retainable development.

Keywords： pump-storage sustainable development hydropower saving energy & decreasing (or conserving) discharge

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conserving and"> Promote the Engineering of Ecological Civilization Construction by Building "Resource-conserving and

Chen Xiao-hong,Zhou Zhi-yu

Frontiers of Engineering Management 2014, Volume 1, Issue 1, Pages 83-88 doi: 10.15302/J-FEM-2014012

Abstract: elaborated the internal connections between the construction of ecological civilization and "Resource-conservingconstruction of Ecological Civilization in the National Synthetically Reform Pilot Zone of the "Resource-conservingstructural and institutional obstacles and problems in further promoting the construction of "Resource-conservinginnovation, the research provided suggestions to deepen the reform of the construction of "Resource-conserving

Keywords： Ecological Civilization

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Load shedding scheme for an interconnected hydro-thermal hybrid system with SMES

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Frontiers in Energy 2012, Volume 6, Issue 3, Pages 227-236 doi: 10.1007/s11708-012-0198-6

Abstract: The impact of superconducting magnetic energy storage (SMES) was obtained on load shedding scheme.

Keywords： frequency response load shedding multi-area system rate of change of frequency superconducting magnetic energy

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Load shedding scheme for the two-area system with linear quadratic regulator

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Frontiers in Energy 2013, Volume 7, Issue 1, Pages 90-102 doi: 10.1007/s11708-012-0224-8

Abstract: A systematic study has been conducted for three scenarios: the scheme with a conventional integral controller; the scheme with a linear quadratic regulator (LQR); and the scheme with an LQR and superconductingmagnetic energy storage devices (SMES).

Keywords： multi-area system rate of change of frequency linear quadratic regulator (LQR) superconducting magnetic energy

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A low power consumption control scheme: application to a piezostack-based active mount

T. LOUKIL, O. BAREILLE, M. N. ICHCHOU, M. HADDAR

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4, Pages 383-389 doi: 10.1007/s11465-013-0274-6

Abstract: The control strategy allows extracting vibrations energy of the supported mass, storing it in accumulatorsConsequently, energy needs are reduced versus good control performances comparable to those of the activeAn energetic analysis confirms the reduced energy requirement compared to the active scheme.

Keywords： hybrid mount energy control piezoelectric harvesting

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Z-scheme CdS/WO on a carbon cloth enabling effective hydrogen evolution

Frontiers in Energy 2021, Volume 15, Issue 3, Pages 678-686 doi: 10.1007/s11708-021-0768-6

Abstract: water splitting for hydrogen (H₂) generation is a potential strategy to solve the problem of energyHerein, a direct Z-scheme CdS/WO₃ composite photocatalyst was fabricated based on carbon cloth

Keywords： photocatalysis CdS/WO₃ carbon cloth Z-scheme hydrogen evolution

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Emergency design framework: a satellite preliminary scheme design

TENG Hongfei, WANG Yishou, ZHANG Bao

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2, Pages 184-192 doi: 10.1007/s11465-007-0031-9

Abstract: Against the background of the preliminary scheme design of satellite payloads, emergency design was studied

Keywords： significant intelligence P2P hereinafter computer cooperation

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A lightweight authentication scheme with user untraceability

Kuo-Hui YEH

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 4, Pages 259-271 doi: 10.1631/FITEE.1400232

Abstract: Unfortunately, based on our analysis, the proposed scheme fails to provide the property of user-untraceabilityA security enhanced authentication scheme is proposed to eliminate all identified weaknesses.

Keywords： Authentication Privacy Security Smart card Untraceability

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ZnFe₂O₄/BiVO₄ Z-scheme heterojunction for efficient visible-light photocatalytic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11, Pages 1728-1740 doi: 10.1007/s11705-023-2322-z

Abstract: A novel Z-scheme ZnFe₂O₄/BiVO₄ heterojunction photocatalyst was successfully> demonstrated considerably enhanced photogenerated charge separation efficiencies because of the Z-schemeThis study thus provides a promising Z-scheme heterojunction photocatalyst for the efficient removal

Keywords： ZnFe₂O₄/BiVO₄ Z-scheme heterojunction photocatalytic degradation

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Extended model predictive control scheme for smooth path following of autonomous vehicles

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1, Pages 4-4 doi: 10.1007/s11465-021-0660-4

Abstract: This paper presents an extended model predictive control (MPC) scheme for implementing optimal path followingreal experiments are carried out to evaluate the feasibility and the effectiveness of the extended MPC scheme

Keywords： autonomous vehicles vehicle dynamic modeling model predictive control path following optimization algorithm

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Effect of the new maternity insurance scheme on medical expenditures for caesarean delivery in Wuxi,

Chun Chen,Zhihong Cheng,Ping Jiang,Mei Sun,Qi Zhang,Jun Lv

Frontiers of Medicine 2016, Volume 10, Issue 4, Pages 473-480 doi: 10.1007/s11684-016-0479-

Abstract: improve China’s healthcare systems, this study examined whether a cap-based medical insurance schemeAfter the scheme’s implementation, medical expenditures for caesarean deliveries declined and themedical expenditures of women covered by the scheme were significantly lower than those of uninsuredThese findings indicated the scheme’s effectiveness in minimizing caesarean delivery expendituresThe cap-based medical insurance scheme with shared financial interest between insurance and healthcare

Keywords： maternity insurance scheme financial incentive caesarean delivery medical expenditure China

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Determination of the scheme of precision grinding compensation on the radome

GUO Dongming, LIU Minjing, ZHANG Chunbo, SHENG Xianjun, SUN Yuwen

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3, Pages 263-266 doi: 10.1007/s11465-007-0045-3

Abstract: Determining the grinding scheme from the boresight error performance is the most important problem to

Keywords： mathematical effective approach experimental measurement antenna electromagnetic

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Wu Qiuwei: Distributed Operation Scheme of Integrated Energy System (2020-8-18)

17 Oct 2022

Keywords：能源

Investigation on a mitigation scheme to resist the progressive collapse of reinforced concrete buildings

Iman TABAEYE IZADI, Abdolrasoul RANJBARAN

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4, Pages 421-430 doi: 10.1007/s11709-012-0181-7

Abstract: This study presents the investigation of the approach which was presented by Thaer M. Saeed Alrudaini to provide the alternate load path to redistribute residual loads and preventing from the potential progressive collapse of RC buildings. It was proposed to transfer the residual loads upwards above the failed column of RC buildings by vertical cables hanged at the top to a hat steel braced frame seated on top of the building which in turn redistributes the residual loads to the adjacent columns. In this study a ten-storey regular structural building has been considered to investigate progressive collapse potential. Structural design is based on ACI 318-08 concrete building code for special RC frames and the nonlinear dynamic analysis is carried out using SAP2000 software, following UFC4-023-03 document. Nine independent failure scenarios are adopted in the investigation, including six external removal cases in different floors and three removal cases in the first floor. A new detail is proposed by using barrel and wedge to improve residual forces transfer to the cables after removal of the columns. Simulation results show that progressive collapse of building that resulted from potential failure of columns located in floors can be efficiently resisted by using this method.

Keywords： prevent progressive collapse alternate load path reinforced concrete buildings nonlinear dynamic retrofitting cable steel hat braced frame barrel and wedge