Results 11 to 20 of about 839,508 (304)

Effect of austempering temperature on the microstructure and wear resistance of ultrafine bainitic steel

open access: yes工程科学学报, 2018
Ultrafine bainitic steels, which are derived from nanostructured carbide-free bainitic steels, exhibit a remarkable combination of ultra-high strength and toughness together with excellent wear resistance. Their excellent integrated mechanical properties
ZHANG Chao   +4 more
doaj   +1 more source

Forcing boundary-layer transition on an inverted airfoil in ground effect and at varying incidence [PDF]

open access: yes, 2016
Presented at 34th AIAA Applied Aerodynamics ConferenceThe influence of the laminar boundary-layer state on a wing operating in ground effect at Re = 6 × 10 has been investigated using experiments with a model that provides two-dimensional flow and ...
Finnis, Mark V.   +3 more
core   +1 more source

Comparison of travel pattern before and during COVID-19 restrictions (ease and strict restrictions) in Greater Kuala Lumpur, Malaysia

open access: yesTransportation Research Interdisciplinary Perspectives, 2023
Previous studies have investigated the effect of COVID-19 on travel behaviour, particularly on changing trends of daily trips and weekly trips for various trip purposes (work, shopping, recreational and social).
Hamza Zubair   +3 more
doaj   +1 more source

Systematic comparison of trip distribution laws and models [PDF]

open access: yes, 2016
Trip distribution laws are basic for the travel demand characterization needed in transport and urban planning. Several approaches have been considered in the last years.
Bassolas, Aleix   +2 more
core   +2 more sources

Influence of Microstructure on the Mechanical Properties and Work-Hardening Behavior of High-Carbon Nanostructured Bainitic Steel [PDF]

open access: yesArchives of Metallurgy and Materials
The microstructure-properties relationship of the low-alloy, high-carbon nanostructured bainitic steel obtained by heat treatment, including austenitization and cooling followed by isothermal nanobainitic transformation at 280℃ for 72 h, was investigated.
K. Janus   +8 more
doaj   +1 more source

Microstructure And Texture Evolution During Cold-Rolling In The Fe-23Mn-3Si-3Al Alloy

open access: yesArchives of Metallurgy and Materials, 2015
Fe–23wt.%Mn–3wt.%Si–3wt.%Al alloy was cast, homogenized at 1150ºC, hot-rolled at temperatures between 1200ºC and 900ºC and next cold-rolled from 5% up to 40% reductions in thickness.
Kowalska J.   +4 more
doaj   +1 more source

Noncommutative QED and the Lifetimes of Ortho and Para Positronium [PDF]

open access: yes, 2002
We examine the implications of including corrections associated with the noncommutative extension of quantum electrodynamics - NCQED - to the decays of the ortho and para positronium (\Trip and \Sing) ground states.
Adkins   +24 more
core   +2 more sources

Longitudinal Effects in the Effectiveness of Educational Virtual Field Trips

open access: yesJournal of Educational Computing Research, 2021
Virtual and immersive virtual reality, VR and iVR, provide flexible and engaging learning opportunities, such as virtual field trips (VFTs). Despite its growing popularity for education, understanding how iVR compared to non-immersive media influences learning is still challenged by mixed empirical results and a lack of longitudinal research.
Jiayan Zhao   +6 more
openaire   +2 more sources

Exploring Socio-Demographic and Urban Form Indices in Demand Forecasting Models to Reflect Spatial Variations: Case Study of Childcare Centres in Hobart, Australia

open access: yesBuildings, 2021
This study investigated whether indices for socioeconomic, demographic and urban form characteristics can reflect the overall effect of each category in a demand forecasting model.
Amir Mousavi   +2 more
doaj   +1 more source

An integrated packet/flow model for TCP performance analysis [PDF]

open access: yes, 2003
Processor sharing (PS) models for TCP behavior nicely capture the bandwidth sharing and statistical multiplexing effect of TCP flows on the flow level. However, these ‘rough’ models do not provide insight into the impact of packet-level parameters (such ...
Avrachenkov   +11 more
core   +2 more sources

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