Results 41 to 50 of about 300,033 (304)

Exploring Maximum and Minimum Operating Speed Positions on Road Geometric Elements Using Continuous Speed Data [PDF]

open access: yes, 2021
Speed prediction models are commonly developed using maximum and minimum operating speeds measured at or within specific locations on the tangents and horizontal curves, respectively.
et al, ., Malaghan, V., Pawar, D.S.
core   +1 more source

Speed Harmonization--Design Speed vs. Operating Speed [PDF]

open access: yes, 2016
When the actual operating speed on the roads exceeds the design speed, which is common on rural highways, the roadway design may become problematic from a safety point of view.
Jiang, Zhoutong   +2 more
core   +2 more sources

Research and Application of Pre-Emergence Flame Control of Direct-Seeding Rice

open access: yesAgronomy
Pre-emergence control is one of the critical steps in the agricultural production of direct-seeding rice. To investigate the mechanism of pre-emergence flame control, a flame control test bench and a flame control and sowing integrated operation machine ...
Zhengbo Zhu   +3 more
doaj   +1 more source

Experimental Analysis on Hairpin Curves

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2010
The consistency of a highway alignment refers to the conformity of its geometry to driver expectancy and to the improvement of the design consistency and consequently it is necessary to know real speed behavior in order to calculate highway safety.
Paolo Discetti
doaj   +1 more source

Optical fiber imaging for high speed plasma motion diagnostics: applied to low voltage circuit breakers [PDF]

open access: yes, 2010
An integrated portable measurement system is described for the study of high speed and high temperature unsteady plasma flows such as those found in the vicinity of high current switching arcs.
Tribulato, G.   +9 more
core   +1 more source

Operating speed prediction model as a tool for consistency based geometric design of four-lane divided highways

open access: yesTransport, 2019
Researchers have studied two-lane rural highways to predict the operating speed on horizontal curves and correlated it with safety. However, the driving characteristics of four-lane-divided highways are different.
Gourab Sil   +3 more
doaj   +1 more source

Analysis of Operating Characteristics of Variable Speed Pumped Storage Motor-Generator

open access: yesIEEE Access, 2023
Large-scale variable-speed pumped storage motor-generator adopts rotor winding AC excitation technology, which can adapt to the regulation requirements of wide speed range and wide power variation.
Hu Jinming   +5 more
doaj   +1 more source

A new concept of the operating speed and speed limit credibility analysis [PDF]

open access: yes, 2021
– This paper presents a new concept of the operating speed and speed limit analysis, using analytical models and empirical research. Also, the analysis of operating speeds as a function of different hourly volume classes was conducted.
Tubić, Vladan   +2 more
core  

Operating cost based cruise speed reduction for ground delay programs: Effect of scope length [PDF]

open access: yes, 2014
Ground delay programs typically involve the delaying of aircraft that are departing from origin airports within some set distance of a capacity constrained destination airport. Long haul flights are not delayed in this way. A trade-off exists when fixing
Delgado, L.   +3 more
core   +1 more source

Quantifying the Effect of Present, Past and Oncoming Alignment on the Operating Speeds of a Two-Lane Rural Road

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2012
In the last decades several studies were conducted in order to develop operating speed prediction models for two-lane rural roads. Many factors were found to affect the operating speed, such as radius of horizontal curve or curvature changes rate, grade,
Filippo Giammaria Praticò   +1 more
doaj   +1 more source

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