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Piezoelectric inertial robot for operating in small pipelines based on stick-slip mechanism: modeling

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0697-z

Abstract: Small pipes exist in industrial and biomedical fields, and require microrobots with high operationalprecision and large load capacity to inspect or perform functional tasks.A dynamics model of the stick-slip system was established by combining the dynamics model of the drivingfoot system and the LuGre friction model, and the simulation analysis of the effect of system parameters

Keywords： pipeline robot     piezoelectric     inertial drive     stick-slip     large load capacity     dynamics model     small    

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Theoretical system for (large) deposit formed by smaller intrusion

Tang Zhongli,Jiao Jiangang and Yan Haiqing

Strategic Study of CAE 2015, Volume 17, Issue 2,   Pages 4-18

Abstract: Through a long term of theoretical researches and guiding prospections， many large and super large depositsBy summarizing the conception， connotation and category of the theory for large deposits formed by smallerintrusion， this paper pointed out that the five key features of this theory are “small， wide，large， high and shallow (potential)”.Through many studies on the ore genesis， we developed the idea of the large deposit formed by smaller

Keywords： small intrusions forming large deposits；connotation；category；characteristics；metallogenic model    

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Performance prediction of switched reluctance generator with time average and small signal models

Jyoti KOUJALAGI, B. UMAMAHESWARI, R. ARUMUGAM

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 56-68 doi: 10.1007/s11708-012-0216-8

Abstract: This paper presents the complete mathematical model and predicts the performance of switched reluctancegenerator with time average and small signal models.The complete mathematical model is developed in three stages.First, a switching model is developed based on quasi-linear inductance profile.Finally, to track control voltage and current wave shapes, a small signal model is designed.

Keywords： generator     reluctance     switching model     small signal model     time average model    

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Should medium-sized contractors still implement home-made information technologies on construction sites?

Conrad BOTON, Éric ST-PIERRE, Gabriel LEFEBVRE

Frontiers of Engineering Management 2020, Volume 7, Issue 1,   Pages 142-158 doi: 10.1007/s42524-019-0065-9

Abstract: Despite the increasing dissemination of the Building Information Modeling (BIM) approach, many firms are still far from BIM and are only starting to adopt information technologies. We conducted an ethnographic action research with an industrial partner that implements information technologies on its construction sites, with a strong preference for home-made applications. Results show that the development of such applications faces difficulties and that multiple iterations and versions are necessary before achieving the expected goals because the required competencies are lacking among internal development teams. Moreover, initial needs evolve considerably throughout the application’s development and evaluation process. However, notwithstanding the difficulties encountered during the different application development phases, the industrial partner believes the decision to be worthwhile because of the desire to have internal control over the project data and the need to consider certain specificities related to business processes.

Keywords： small- and medium-sized enterprises     mobile computing     mobile cloud computing     information technology for    

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Cutting Force Model for a Small-diameter Helical Milling Cutter

LI Xiwen, YANG Shuzi, YANG Mingjin, XIE Shouyong

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 272-277 doi: 10.1007/s11465-007-0047-1

Abstract: the milling process, the major flank wear land area (two-dimensional measurement for the wear) of a small-diameterBy analyzing the wearing characteristics of the cutter, a cutting force model based on the major flankThe cutting force model for the helical milling cutter is validated by experiments.The computational and experimental results show that the cutting force model is almost consistent withthe condition of a milling process that uses a small-diameter helical milling cutter.

Keywords： computational     corresponding     helical milling     theoretical foundation     Characteristic    

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Investigation on the integral output power model of a large-scale wind farm

BAO Nengsheng, MA Xiuqian, NI Weidou

Frontiers in Energy 2007, Volume 1, Issue 1,   Pages 67-78 doi: 10.1007/s11708-007-0006-x

Abstract: The integral output power model of a large-scale wind farm is needed when estimating the wind farm sThe actual wind speed power model and calculation method of a wind farm made up of many wind turbineconsidering the multi-effects among the wind turbine units and certain assumptions, the incoming wind flow modelThe calculation algorithms and steps of the integral output power model of a large-scale wind farm areThe characteristics of a large-scale wind farm are also discussed.

Keywords： power model     actual     energy     large-scale     practical measurement    

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Numerical simulation of compaction parameters for sand-filled embankment using large thickness sand filling

Wentao WANG, Chongzhi TU, Rong LUO

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 568-576 doi: 10.1007/s11709-017-0444-4

Abstract: The study uses the finite element method to simulate a new technique of highway sand embankment filling in Jianghan Plain district, which can raise the thickness of sand-filled layer from 30 cm to 70 cm and can significantly shorten the construction period based on the guarantee of sand embankment construction quality. After simulating the three compacting proposals carried out on the field test, the study uses COMSOL software to research on the compacting effects of sand-filled layers in larger thicknesses by 22 ton vibratory roller alone, and then to investigate the steady compacting effect of 12 ton vibratory roller. The simulation results indicate that the sand-filled layer thickness of 70 cm is suitable for the new sand filling technique, and the sand-filled embankment project with tight construction period is suggested to choose the 12 ton vibration roller for steady compaction.

Keywords： sand embankment     compaction in large thickness     numerical simulation     small size vibratory roller     steady    

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Challenges of human–machine collaboration in risky decision-making

Frontiers of Engineering Management 2022, Volume 9, Issue 1,   Pages 89-103 doi: 10.1007/s42524-021-0182-0

Abstract: The purpose of this paper is to delineate the research challenges of human–machine collaboration in riskyThen, we argue the necessity and urgency of advancing human–machine collaboration in risky decision-makingAfterward, we review the literature on human–machine collaboration in a general decision context, fromthe perspectives of human–machine organization, relationship, and collaboration.

Keywords： human–machine collaboration     risky decision-making     human–machine team and interaction     task allocation    

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Dynamic Coordinated Management Model of Programme in Large-Scale Construction Company

Feng Guo,Yi-qi Chen,Yi-qing Cai

Frontiers of Engineering Management 2015, Volume 2, Issue 3,   Pages 287-292 doi: 10.15302/J-FEM-2015041

Abstract: Large-scale construction companies develop rapidly when facing more and more opportunities and challengesmanagement theory to programme management according to the need of changing the existing management mode in large-scaleconstruction companies, then puts forward the dynamic coordinated management model composed of the dynamic

Keywords： large-scale construction company     programme     dynamic coordinated management     model    

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Digitalization for supply chain resilience and robustness: The roles of collaboration and formal contracts

Frontiers of Engineering Management   Pages 5-19 doi: 10.1007/s42524-022-0229-x

Abstract: Adopting organizational information processing theory, it proposes the mediating effect of supply chain collaborationof Chinese manufacturing firms, the study applied structural equation modelling to test the research modelResults show that digitalization has a direct effect on supply chain resilience, and supply chain collaborationOur study also indicates a complementary mediating effect of supply chain collaboration on the relationshipFindings reveal the differential roles of digitalization as a technical factor and supply chain collaboration

Keywords： digitalization     supply chain     resilience     robustness     collaboration     formal contract    

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Large-scale model test study on the water pressure resistance of construction joints of karst tunnel

Frontiers of Structural and Civil Engineering   Pages 1249-1263 doi: 10.1007/s11709-023-0974-x

Abstract: Model tests and numerical calculations were adopted based on the New Yuanliangshan tunnel project toA large-scale model test was designed and conducted, innovatively transforming the external water pressureon the water pressure resistance of the construction joint were analyzed, and the reliability of the modelpressure resistance of the construction joint determined via numerical calculations is similar to the modeltest results, indicating that the model test results have high accuracy and reliability.

Keywords： karst tunnel     lining construction joint     water pressure resistance     large-scale model test     numerical    

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Model server enabled management of collaborative changes in building information models

Muhammad Tariq SHAFIQ, Jane MATTHEWS, Steve LOCKLEY, Peter E.D. LOVE

Frontiers of Engineering Management 2018, Volume 5, Issue 3,   Pages 298-306 doi: 10.15302/J-FEM-2018009

Abstract: controlling the collaborative changes in a Building Information Modeling (BIM) data repository, in a multi-modelcollaboration environment, are discussed.in the construction industry and better solutions are needed to support the underlying workflows and computingoperations for seamless collaboration on BIMs.

Keywords： building information models     collaboration     IFC     change management     model-servers    

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The theory on small intrusions forming large deposits and its exploration significance—Taking for magmatic

Li Wenyuan,Zhang Zhaowei and Chen Bo

Strategic Study of CAE 2015, Volume 17, Issue 2,   Pages 29-34

Abstract:

The theory on small intrusions forming large deposits put forward by academician Zhongli Tang wasMany mineral exploration practices have effectively illustrated that the hypabyssal and small intrusionIn this paper，we have discussed the theory of small intrusions forming large deposits，considering thatintrusions forming large deposits.intrusions forming large deposits，and make it more realistic meaningful in guiding prospecting.

Keywords： mafic-ultramafic intrusions； magmatic Ni-Cu sulfide deposits； small intrusions forming large deposits    

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Diffusion of municipal wastewater treatment technologies in China: a collaboration network perspective

Yang Li, Lei Shi, Yi Qian, Jie Tang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 1, doi: 10.1007/s11783-017-0903-0

Abstract: Important projects usually involve central organizations in collaboration.diffusion networks are assortative, and the patterns of diffusion vary across technologies; while the collaborationsince the 2000s. 2) Important projects in technology diffusion usually involve central organizations in collaborationnetworks, but organizations become more central in collaboration by doing circumstantial projects indiffusion. 3) The importance of projects in diffusion can be predicted with a Random Forest model at

Keywords： Innovation diffusion     Collaboration network     Wastewater treatment plant     Complex network     Data driven    

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Interference coordination in full-duplex HetNet with large-scale antenna arrays Article

Zhao-yang ZHANG, Wei LYU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 6,   Pages 830-840 doi: 10.1631/FITEE.1700047

Abstract: Massive multiple-input multiple-output (MIMO), small cell, and full-duplex are promising techniques for) that consists of a massive-MIMO enabled macro-cell base station (MBS) and a number of full-duplex small-cell

Keywords： Massive MIMO     Full-duplex     Small cell     Wireless backhaul     Distributed algorithm    

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Title Author Date Type Operation

Piezoelectric inertial robot for operating in small pipelines based on stick-slip mechanism: modeling

Journal Article

Theoretical system for (large) deposit formed by smaller intrusion

Tang Zhongli,Jiao Jiangang and Yan Haiqing

Journal Article

Performance prediction of switched reluctance generator with time average and small signal models

Jyoti KOUJALAGI, B. UMAMAHESWARI, R. ARUMUGAM

Journal Article

Should medium-sized contractors still implement home-made information technologies on construction sites?

Conrad BOTON, Éric ST-PIERRE, Gabriel LEFEBVRE

Journal Article

Cutting Force Model for a Small-diameter Helical Milling Cutter

LI Xiwen, YANG Shuzi, YANG Mingjin, XIE Shouyong

Journal Article

Investigation on the integral output power model of a large-scale wind farm

BAO Nengsheng, MA Xiuqian, NI Weidou

Journal Article

Numerical simulation of compaction parameters for sand-filled embankment using large thickness sand filling

Wentao WANG, Chongzhi TU, Rong LUO

Journal Article

Challenges of human–machine collaboration in risky decision-making

Journal Article

Dynamic Coordinated Management Model of Programme in Large-Scale Construction Company

Feng Guo,Yi-qi Chen,Yi-qing Cai

Journal Article

Digitalization for supply chain resilience and robustness: The roles of collaboration and formal contracts

Journal Article

Large-scale model test study on the water pressure resistance of construction joints of karst tunnel

Journal Article

Model server enabled management of collaborative changes in building information models

Muhammad Tariq SHAFIQ, Jane MATTHEWS, Steve LOCKLEY, Peter E.D. LOVE

Journal Article

The theory on small intrusions forming large deposits and its exploration significance—Taking for magmatic

Li Wenyuan,Zhang Zhaowei and Chen Bo

Journal Article

Diffusion of municipal wastewater treatment technologies in China: a collaboration network perspective

Yang Li, Lei Shi, Yi Qian, Jie Tang

Journal Article

Interference coordination in full-duplex HetNet with large-scale antenna arrays

Zhao-yang ZHANG, Wei LYU

Journal Article