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Discussion on Long-Life Security Strategies for Railway Track Engineering

Wang Ping,Chen Rong and An Boyang

Strategic Study of CAE 2017, Volume 19, Issue 6, Pages 66-71 doi: 10.15302/J-SSCAE-2017.06.010

Abstract:

Although significant progress in the development of rail transportation

Keywords： railway track engineering long life safety guarantee Shift2Rail

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The impact of different voltage application modes on biodegradation of chloramphenicol and shift of microbial

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1576-x

Abstract:

● Presented coupled system enhanced biodegradation of antibiotic chloramphenicol.

Keywords： Electrical stimulation Biodegradation Microbial community Chloramphenicol

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Coordinated shift control of nonsynchronizer transmission for electric vehicles based on dynamic tooth

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4, Pages 887-900 doi: 10.1007/s11465-021-0653-3

Abstract: economic performance of electric vehicles (EVs), but the coordinated control of the drive motor and gear shiftTo improve the swiftness of gear shifting, this paper proposes a coordinated shift control method basedResults show that gear shifting duration and maximum jerk are reduced under the shift control with theproposed method, which proves the effectiveness of the proposed coordinated shift control method with

Keywords： electric vehicle nonsynchronizer automated mechanical transmission (NSAMT) planetary gear coordinated shift

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Enhanced activity of bimetallic Fe-Cu catalysts supported on ceria toward water gas shift reaction: synergistic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12, Pages 1962-1972 doi: 10.1007/s11705-023-2359-z

Abstract: Within the “hydrogen chain”, the high-temperature water gas shift reaction represents a key step to improvethe H₂ yield and adjust the H₂/CO_x ratio to fit the constraintsDespite the commercial application of the high-temperature water gas shift, novel catalysts characterized

Keywords： water gas shift iron copper bimetallic catalysts ceria hydrogen

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Modelling of dynamic contact length in rail grinding process

Shaodan ZHI,Jianyong LI,A. M. ZAREMBSKI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3, Pages 242-248 doi: 10.1007/s11465-014-0305-y

Abstract: The accumulated stress concentrations will cause the plastic deformation of rail towards generating corrugationsSo the rail grinding technology has been invented with rotating grinding stones pressed on the rail withSuch rail grinding works are directed by experiences rather than scientifically guidance, lacking ofWith grinding control unit holding the grinding stones, the rail grinding process has the characteristicsFirst of all, it’s important to analyze the contact length between the grinding stone and the rail

Keywords： rail grinding contact length dynamic model Hamiltonian system grinding stone rail grinding car

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Energy-saving operation approaches for urban rail transit systems

Ziyou GAO, Lixing YANG

Frontiers of Engineering Management 2019, Volume 6, Issue 2, Pages 139-151 doi: 10.1007/s42524-019-0030-7

Abstract: Developing public urban rail transit systems is an indispensable approach to overcome these problems.However, the high energy consumption of daily operations is an emerging issue due to increased rail transitThis work systematically introduces energy-saving approaches for urban rail transit systems in threedirections in this field are also proposed to meet increasing passenger demands and network-based urban rail

Keywords： urban rail transit energy saving speed profile optimization regenerative energy train timetable

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Study of Sustainable Urban Rail Transit Development Model in China

Wen-wu Yang

Frontiers of Engineering Management 2014, Volume 1, Issue 2, Pages 195-201 doi: 10.15302/J-FEM-2014026

Abstract: the grand urbanization rapidly progresses in China, Chinese government launches a magnificent urban railIt is very necessary to establish a viable public private partnership model for urban rail constructionreviewing Hong Kong Railway+ Property development model which is proved very successful in mass transit railpublic-private-partnership (PPP) study of Shenzhen metro line 6 as an example, the sustainable urban railIt concludes that the sustainable urban rail transit shall be able to energize the great potential of

Keywords： urban rail transit Railway+ Property(R+P) sustainability transit oriented development private public

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Interactive effects of high-speed rail on nodal zones in a city: exploratory study on China

Guo LIU, Kunhui YE

Frontiers of Engineering Management 2019, Volume 6, Issue 3, Pages 327-335 doi: 10.1007/s42524-019-0051-2

Abstract: The arrival of the high-speed rail (HSR) era has accelerated the pace of urban development, but its broad

Keywords： high-speed rail nodal zone interactive effects sustainable urbanization China

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System and prospects of China’s intercity rail transit technology

Ming GONG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2, Pages 323-328 doi: 10.1007/s11465-018-0463-4

Abstract: midst of the deepening urbanization in the country, thereby resulting in the emergence of intercity railThis study explores the development mode and service characteristics of intercity rail transit, as well

Keywords： intercity rail transit city cluster technical demand technology system

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Coupling analysis of passenger and train flows for a large-scale urban rail transit system

Frontiers of Engineering Management 2023, Volume 10, Issue 2, Pages 250-261 doi: 10.1007/s42524-021-0180-2

Abstract: is an important approach in evaluating and optimizing the operation efficiency of large-scale urban railthis research to effectively support train schedule optimization and capacity evaluation for urban railare demonstrated via numerical experiments using real-world data from the Beijing URT system (i.e., rail

Keywords： urban rail transit coupling analysis passenger–train interaction large-scale simulation

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Construction of west rail channel and analysis of policy measures

Sun Yongfu

Strategic Study of CAE 2010, Volume 12, Issue 6, Pages 18-24

Abstract: ="text-align: justify;">On the basis of passenger and freight transport emands analysis of the west rail, the main problems at present are raised, and the need for rail ransport channel is stressed.The west rail network development objectives and the rail channel onstruction principle are clarifiedAnd some policy measures o speeding up the construction of west rail channel are proposed.

Keywords： west rail channel onstruction transport capacity investment and financing reform rail freight price

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Dual collaboration for decentralized multi-source domain adaptation Research Article

Yikang WEI, Yahong HAN

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 12, Pages 1780-1794 doi: 10.1631/FITEE.2200284

Abstract: The goal of decentralized is to conduct unsupervised in a scenario. The challenge of is that the source domains and target domain lack cross-domain collaboration during training. On the unlabeled target domain, the target model needs to transfer supervision knowledge with the collaboration of source models, while the domain gap will lead to limited adaptation performance from source models. On the labeled source domain, the source model tends to overfit its domain data in the scenario, which leads to the problem. For these challenges, we propose dual collaboration for decentralized by training and aggregating the local source models and local target model in collaboration with each other. On the target domain, we train the local target model by distilling supervision knowledge and fully using the unlabeled target domain data to alleviate the problem with the collaboration of local source models. On the source domain, we regularize the local source models in collaboration with the local target model to overcome the problem. This forms a dual collaboration between the decentralized source domains and target domain, which improves the domain adaptation performance under the scenario. Extensive experiments indicate that our method outperforms the state-of-the-art methods by a large margin on standard datasets.

Keywords： Multi-source domain adaptation Data decentralization Domain shift Negative transfer

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Energy shift: decline of easy oil and restructuring of geo-politics

Oliver R. INDERWILDI,David A. KING

Frontiers in Energy 2016, Volume 10, Issue 3, Pages 260-267 doi: 10.1007/s11708-016-0416-8

Abstract: This paper critically assesses the geopolitical and geo-economic impact of novel fuel resources on both resource exporters and importers. Presently, very strong political and economic forces drive the utilisation of domestic, unconventional oil and gas recovery in the West as these enhance energy security and ease balance of payment issues. The additional capacity generated by this trend has, supported by other effects such as Saudi Arabia’s decision to maintain current production, triggered a significant reduction of oil prices. Consequently, it is now oil exporters that struggle with the balance of payment issues and often these countries base their fiscal budget completely on fossil fuel revenues. In fact, these unconventional resources help turn the tide while oil exporters are now politically significantly weakened due to the increased energy sufficiency of the West. The catch is that the extraction of unconventional types of oil has many environmental implications. So, internalising the environmental externalities have to be considered. This paper, therefore, assesses, next to geopolitics and geo-economics, the environmental implications of this trend.

Keywords： energy security climatic change geo-economics geopolitics unconventional resources macroeconomics

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On observability of Galois nonlinear feedback shift registers over finite fields Research Article

Zhe GAO, Jun´e FENG, Yongyuan YU, Yanjun CUI

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 10, Pages 1533-1545 doi: 10.1631/FITEE.2200228

Abstract:

ensures that any two distinct initial states can be uniquely determined by their outputs, so the stream ciphers can avoid unobservable to prevent the occurrence of equivalent keys. This paper discusses the of over . are treated as using the . The vector form of the state transition matrix is introduced, by which a necessary and sufficient condition is proposed, as well as an algorithm for determining the of general . Moreover, a new matrix is defined, which can derive a matrix method with lower computation complexity. Furthermore, the of two special types of , a full-length Galois NFSR and a nonsingular Galois NFSR, is investigated. Two methods are proposed to determine the of these two special types of NFSRs, and some numerical examples are provided to support these results.

Keywords： Observability Nonlinear feedback shift registers (NFSRs) Galois NFSRs Semi-tensor product Finite

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Dynamic analysis of rail transit elevated bridge with ladder track

He XIA, Yushu DENG, Yongwei ZOU, Guido DE ROECK, Geert DEGRANDE

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1, Pages 2-8 doi: 10.1007/s11709-009-0001-x

Abstract: In this paper, a dynamic analysis model of an elevated bridge with ladder tracks under moving train load is established. The whole process of a train running through an elevated bridge at different speeds is simulated. The dynamic responses of the elevated bridge with ladder track and the running safety and comfort index of train vehicles are evaluated. Compared with the dynamic responses of an elevated bridge with ordinary non-ballasted slab track, the ladder track’s effect on reducing the vibration of an elevated bridge is analyzed. The analysis results show that the ladder track has good vibration reduction characteristics as compared to ordinary non-ballasted track.

Keywords： rail transit elevated bridge ladder track dynamic response