Results 101 to 110 of about 446,614 (267)

The aesthetic sublime of megaproject structures: A framework and a research agenda

open access: yesEuropean Management Review, EarlyView.
Abstract The physical structures of megaprojects—such as mega‐canals, metros, railway lines, bridges, tunnels, and iconic opera houses—hold a profound capacity to generate aesthetic experiences with enduring societal impact. Yet, research on megaprojects has predominantly focused on functionality and economic rationale with aesthetics being pushed to ...
Federica De Molli   +2 more
wiley   +1 more source

Track wear-and-tear cost by traffic class: Functional form, zero output levels and marginal cost pricing recovery on the French rail network [PDF]

open access: yes
We address the issue of the allocation of railway track maintenance (wear-and-tear) costs to traffic output classes and consider a very general function relating maintenance cost C to a set of technical production characteristics K used to produce ...
Marc Gaudry, Emile Quinet
core  

Effects of profile wear on wheel–rail contact conditions and dynamic interaction of vehicle and turnout

open access: yesAdvances in Mechanical Engineering, 2016
Severe wear is a common damage mechanism in railway turnouts, which strongly affects the dynamic performance of railway vehicles and maintenance costs of tracks.
Jingmang Xu   +3 more
doaj   +1 more source

Connectivity and Selective Rural Migration

open access: yesInternational Economic Review, EarlyView.
ABSTRACT How does infrastructure shape rural development? Using household panel data from a nationally representative sample of Chinese villages, matched to high‐resolution highway maps, we find that road expansion between 2000 and 2015 operates mainly through reallocation, with less productive farmers scaling down or exiting and more productive ...
Lin Ma   +3 more
wiley   +1 more source

Research on Metro Vehicle Wheel Wear and Reprofiling Strategy

open access: yesChengshi guidao jiaotong yanjiu
Objective Wheel wear directly affects the vibration environment of metro vehicles. Severe abnormal wear can lead to structural fatigue exceeding the limit, reducing the safety of train operation.
JIA Xiaoping   +3 more
doaj   +1 more source

Friction and wear simulation of the wheel–rail interface

open access: yes, 2009
The conditions in wheel rail contacts can be both mild and severe. Predicting the friction and the wear in such contacts is generally thought to be rather difficult and uncertain.
S. Andersson, Andersson, Sören,
core   +1 more source

Description of Flavicapitulum gen. nov. and two new species of Marmoreocelis from thermal habitats in the Americas

open access: yesJournal of Phycology, EarlyView.
Abstract Three novel taxa in the Coleofasciculales were observed in hot springs in Yellowstone National Park, Wyoming, United States, and in the Tabaconcito thermal springs on the Rio Tabacón in Costa Rica. Flavicapitulum vaporiphilum gen. et sp. nov. was located in a supported clade with Gracilinea and Marmoreocelis.
Jeffrey R. Johansen   +3 more
wiley   +1 more source

Improved detection algorithm for rail profile wear based on line structured light

open access: yes机车电传动
The classical Iterative Closest Point (ICP) registration algorithm is commonly applied to rail profile wear detection systems. However, during the operation of track inspection vehicles, the profile data collected by the rail profile wear detection ...
LIU Zhengfeng, CHEN Jianzheng, LI Wei
doaj  

Home sweet harm: Confinement and tranquilidad in post‐asylum Peru

open access: yesMedical Anthropology Quarterly, EarlyView.
Abstract This article examines how Peru's Community Mental Health (CMH) model contributes to the exclusion and home confinement of mentally ill individuals. Based on the experience of a woman diagnosed with schizophrenia and her mother, I show how CMH's emphasis on community‐based care often fails in practice, as neighbors respond to people with mental
Julio Villa‐Palomino
wiley   +1 more source

Seizure and wear rate testing of wheel–rail contacts under lubricated conditions using pin-on-disc methodology

open access: yes, 2008
An increased wear rate and a shift of wear mechanism in the wheel-rail contact has been observed in tight curves, mainly due to the change from an almost pure rolling contact to more of a sliding contact.
Sundh, Jon,   +2 more
core   +1 more source

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