Results 81 to 90 of about 23,258 (311)
Results in EngineeringIn this paper, we utilize acoustic vibration characteristics for the combined diagnosis of rail corrugation. The two-dimensional signal is first decomposed into several modes by Multivariate circulant singular spectrum analysis (MCiSSA) and the ...
Xuegeng Mao +6 more
doaj +1 more source
Aggregate and Regional Economic Effects of New Railway Infrastructure [PDF]
Economists expect positive returns to investments in infrastructure. However a project with higher national returns might have less favourable effects on a regional level than the alternative.
Sellner, Richard +2 more
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Justice in coexistence: Pastoralism and large carnivores on the Qinghai‐Tibet Plateau
People and Nature, EarlyView.Abstract The conflict between livestock husbandry and large carnivore conservation presents significant challenges in grassland ecosystems worldwide. Achieving sustainable coexistence among herders, livestock and large carnivores requires reconciling diverse perspectives and interests through equitable, inclusive and fair processes that address both ...
Yufang Gao, Yue Yu
wiley +1 more source
Estimation of speed-related car body acceleration limits with quantile regression [PDF]
Railway SciencesPurpose – This study aimed to facilitate a rapid evaluation of track service status and vehicle ride comfort based on car body acceleration. Consequently, a low-cost, data-driven approach was proposed for analyzing speed-related acceleration limits in ...
Jianli Cong +8 more
doaj +1 more source
Railway Renewal and Maintenance Cost Estimating [PDF]
, 2005 The aim of this thesis is to present a structured methodology which estimates Railway Infrastructure renewal and maintenance costs when there is a lack of quantitative cost data at the early stages of the project life cycle.
Ling, Daniel
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People and Nature, EarlyView.Abstract High nature value (HNV) pastoral systems, that is those maintained by herding, transhumance and extensive grazing practices, are recognised as cornerstones of European biodiversity, cultural heritage and ecosystem service provision. Yet these systems are currently under significant pressure from a range of economic, social and environmental ...
Katrina Marsden +7 more
wiley +1 more source
OPTIMAL RAILWAY INFRASTRUCTURE MAINTENANCE AND REPAIR POLICIES TO MANAGE RISK UNDER UNCERTAINTY WITH ADAPTIVE CONTROL [PDF]
The aim of this paper is to apply two adaptive control formulations under uncertainty, say open-loop and closed-loop, to the process of developing maintenance and repair policies for railway infrastructures.
Jesus Carretero +3 more
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Pest Management Science, EarlyView.We developed an invasion risk index framework that integrates socioeconomic and environmental data using an entropy‐weighting method. The case study highlights the need for region‐specific biosecurity measures for Chilo suppressalis. Abstract BACKGROUND Biological invasion risk is a multifaceted concept that, according to the Food and Agriculture ...
Jinsol Hong +11 more
wiley +1 more source
Options for reshaping the railway [PDF]
In many countries the mismatch between what the railways offer and what the customers want has caused significant economic inefficiency and severe financial strains for the railways and their government owners.
Moyer, Neil E., Thompson, Louis S.
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Sustainable Development, EarlyView.ABSTRACT Displacing people to make way for development projects is contentious. Empirical research demonstrates that neither human rights guidelines nor multilateral lenders' standards guarantee positive, sustainable outcomes for displaced people. With multiple new displacing projects proposed globally, including for renewable energy, we propose a new ...
Eddie Smyth +2 more
wiley +1 more source