Results 31 to 40 of about 343,079 (292)

A Simple Command to Calculate Travel Distance and Travel Time [PDF]

open access: yesThe Stata Journal: Promoting communications on statistics and Stata, 2017
Obtaining the routing distance between two addresses should not be a hassle with current technology. Unfortunately, this is more complicated than it first seems. Recently, several commands have been implemented for this purpose (traveltime, traveltime3, mqtime, osrmtime), but most of them became obsolete only a few months after their introduction or ...
Weber, Sylvain, Péclat, Martin
openaire   +3 more sources

Quality-Aware Autonomous Navigation with Dynamic Path Cost for Vision-Based Mapping toward Drone Landing

open access: yesDrones, 2023
This article presents a novel autonomous navigation approach that is capable of increasing map exploration and accuracy while minimizing the distance traveled for autonomous drone landings.
Onuralp Sözer, Tufan Kumbasar
doaj   +1 more source

Intraurban Cognitive Distance: The Relationship between Judgments of Straight‐Line Distances, Travel Distances, and Travel Times [PDF]

open access: yesGeographical Analysis, 1986
Interurban cognitive distance : relationship between judgements of strait-line distances, travel distances, and travel ...
Jouko Säisä   +3 more
openaire   +1 more source

Peeling and Sliding in Nucleosome Repositioning

open access: yes, 2007
We investigate the mechanisms of histone sliding and detachment with a stochastic model that couples thermally-induced, passive histone sliding with active motor-driven histone unwrapping.
G. Längst   +3 more
core   +1 more source

On the propagation of the highest energy cosmic ray nuclei [PDF]

open access: yes, 1998
We study the propagation of ultra-high energy cosmic ray nuclei through the background of cosmic microwave and intergalactic infrared photons, using recent re-estimates for the density of the last ones.
Epele, Luis N., Roulet, Esteban
core   +2 more sources

Utility Factor Curves for Plug-in Hybrid Electric Vehicles: Beyond the Standard Assumptions

open access: yesWorld Electric Vehicle Journal, 2023
The utility factor (UF) of a plug-in hybrid electric vehicle (PHEV) refers to the ratio of miles traveled in electric mode to the total miles traveled. Standard UF curves provide a prediction of the expected achievable UF by a PHEV given its all-electric
Karim Hamza, Kenneth P. Laberteaux
doaj   +1 more source

Distance traveled by random walkers before absorption in a random medium

open access: yes, 2006
We consider the penetration length $l$ of random walkers diffusing in a medium of perfect or imperfect absorbers of number density $\rho$. We solve this problem on a lattice and in the continuum in all dimensions $D$, by means of a mean-field ...
B. Ya. Balagurov   +9 more
core   +1 more source

Movement in cluttered virtual environments [PDF]

open access: yes, 2001
Imagine walking around a cluttered room but then having little idea of where you have traveled. This frequently happens when people move around small virtual environments (VEs), searching for targets.
Jones, D.M., Ruddle, R.A.
core   +3 more sources

Radially restricted linear energy transfer for high-energy protons: A new analytical approach [PDF]

open access: yes, 1994
Radially restricted linear energy transfer (LET) is a basic physical parameter relevant to radiation biology and radiation protection. In this report a convenient method is presented for the analytical computation of this quantity without the need for ...
A Chatterjee   +11 more
core   +1 more source

Bank erosion and large wood recruitment along a gravel bed river

open access: yesJournal of Agricultural Engineering, 2016
Riverine environments can be very dynamic and complex systems, particularly because of the interaction between active channel and riparian land during flood events of different magnitude.
Lorenzo Picco   +3 more
doaj   +1 more source

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