Results 11 to 20 of about 232,364 (262)

Sensor Distribution Design of Travel Time Tomography in Explosion [PDF]

open access: yesSensors, 2014
Optimal sensor distribution in explosion testing is important in saving test costs and improving experiment efficiency. Aiming at travel time tomography in an explosion, an optimizing method in sensor distribution is proposed to improve the inversion ...
Yali Guo   +3 more
doaj   +3 more sources

The impact of travel time on geographic distribution of dialysis patients. [PDF]

open access: yesPLoS ONE, 2012
BACKGROUNDS: The geographic disparity of prevalence rates among dialysis patients is unclear. We evaluate the association between travel time to dialysis facilities and prevalence rates of dialysis patients living in 1,867 census areas of Hiroshima ...
Saori Kashima   +4 more
doaj   +4 more sources

Optimal departure time choices as quantiles and expectiles of the travel time distribution

open access: yesEURO Journal on Transportation and Logistics
We consider two alternative preference specifications for optimal departure time choices: the classical asymmetric linear loss for early and late delays, and a new specification based on asymmetric quadratic loss.
Maria Osipenko
doaj   +2 more sources

Selfishness and altruism in the distribution of travel time and income [PDF]

open access: yesTransportation, 2013
Most economic models assume that individuals act out their preferences based on self-interest alone. However, there have also been other paradigms in economics that aim to capture aspects of behavior that include fairness, reciprocity, and altruism.
Tilahun, Nebiyou J, Levinson, David M
openaire   +3 more sources

Modelling arterial travel time distribution using copulas [PDF]

open access: yes2020 IEEE 23rd International Conference on Intelligent Transportation Systems (ITSC), 2020
The estimation of travel time distribution (TTD) is critical for reliable route guidance and provides theoretical bases and technical support for advanced traffic management and control. The state-of-the art procedure for estimating arterial TTD commonly assumes that the path travel time follows a certain distribution without considering segment ...
Samara, Adam   +2 more
openaire   +3 more sources

Bayesian Mixture Model to Estimate Freeway Travel Time under Low-Frequency Probe Data

open access: yesApplied Sciences, 2022
This study develops a novel estimation method under low-frequency probe data using the Bayesian approach. Given the challenges in estimating travel time under low-frequency probe data and prior distribution of the parameters in a traditional Bayesian ...
Hyungjoo Kim, Lanhang Ye
doaj   +1 more source

Expansion and contraction of the flowing stream network alter hillslope flowpath lengths and the shape of the travel time distribution [PDF]

open access: yesHydrology and Earth System Sciences, 2019
Flowing stream networks dynamically extend and retract, both seasonally and in response to precipitation events. These network dynamics can dramatically alter the drainage density and thus the length of subsurface flow pathways to flowing streams.
H. J. I. van Meerveld   +7 more
doaj   +1 more source

Large-network travel time distribution estimation for ambulances [PDF]

open access: yesEuropean Journal of Operational Research, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bradford S. Westgate   +3 more
openaire   +1 more source

From average travel time budgets to daily travel time distributions

open access: yesTransportation Research Record: Journal of the Transportation Research Board, 2006
An analysis of three travel surveys (in Belgium, France, and Great Britain) is used to investigate two conjectures by Kölbl and Helbing. The first one suggests a relation between mode choice and human energy expenditure for travel, which is assumed to be constant in time and space.
Hubert, Jena-Paul, Toint, Philippe
openaire   +3 more sources

Estimation of Travel Time Distributions in Urban Road Networks Using Low-Frequency Floating Car Data

open access: yesISPRS International Journal of Geo-Information, 2017
Travel times in urban road networks are highly stochastic. However, most existing travel time estimation methods only estimate the mean travel times, while ignoring travel time variances. To this end, this paper proposes a robust travel time distribution
Chaoyang Shi, Bi Yu Chen, Qingquan Li
doaj   +1 more source

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