Results 31 to 40 of about 11,872 (296)

Speed-of-light pulses in the massless nonlinear Dirac equation with a potential [PDF]

open access: yes, 2017
We consider the massless nonlinear Dirac (NLD) equation in $1+1$ dimension with scalar-scalar self-interaction $\frac{g^2}{2} (\bar{\Psi} \Psi)^2$ in the presence of three external electromagnetic potentials $V(x)$, a potential barrier, a constant ...
Bishop, A. R.   +4 more
core   +2 more sources

Variable Density Speed Hump

open access: yesInternational Journal of Students' Research in Technology & Management, 2016
This technical paper relates to a device that reduces the speed of any overspeeding vehicles travelling on a roadway.It is formed by at least one hollow strip of flexible material, made up of several receptacles located in the shell body. Each receptacle is impregnated with a dilatant shear-thickening fluid.
openaire   +1 more source

Analysis and Evaluation of Trapezoidal Speed Humps and Their Impact on the Driver

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2018
Operating speed is one of the leading safety risk factors, which increases accident risk and influences accident severity. Speeding is the leading cause of accidents and the most common road traffic offense.
Vilma Jasiūnienė   +4 more
doaj   +1 more source

Traffic flow parameters development modelling at traffic calming measures located on arterial roads

open access: yesAin Shams Engineering Journal, 2021
Controlling the speed of vehicles is essential in some parts of the roadway. One way of controlling speed is to use static control devices i.e. traffic calming measures, which reduce the speeds of vehicles and thereby increase safety, while produce ...
Ayman A. Abdulmawjoud   +2 more
doaj   +1 more source

Traffic Calming in Québec: Speed Humps and Speed Cushions

open access: yesJournal of Civil Engineering and Architecture, 2013
Speed management is an essential tool in ensuring the improved safety of users of urban roads, particularly vulnerable users. It relies on several measures: awareness campaigns, speed control, as well as the development and operation of the road infrastructure.
null Catherine Berthod   +1 more
openaire   +1 more source

Safety assessment of pedestrian crossing solutions

open access: yesBudownictwo i Architektura, 2014
Paper presents preliminary findings from the research project Mobis which is aimed at developing a method of assessing safety of pedestrian road crossings by using video image analysis.
Piotr Olszewski   +3 more
doaj   +1 more source

Characterising bars in low surface brightness galaxies

open access: yes, 2018
In this paper, we use $\textit{B}$-band, $\textit{I}$-band, and 3.6 $\mu$m azimuthal light profiles of four low surface brightness (LSB) galaxies (UGC 628, F568-1, F568-3, F563-V2) to characterise three bar parameters: length, strength, and corotation ...
de Naray, Rachel Kuzio, Peters, Wesley
core   +1 more source

Public Evaluation of Speed Humps Performance and Effectiveness [PDF]

open access: yesCivil Engineering Journal, 2018
In Egypt, it is believed that speed humps are the cheapest and best solutions to reduce vehicles speed and thus reduce the number of potential accidents. Due to the lack of specifications in Egypt that govern the installation of speed humps, they were spread randomly and with different dimensions without adequate studies.
Sayed Shwaly   +2 more
openaire   +1 more source

Impact of vertical traffic calming devices on environmental noise

open access: yesGrađevinar, 2021
Increasing numbers of people living in urban areas are being exposed to harmful action of environmental noise, which severely affects their health and quality of life.
Tamara Džambas   +2 more
doaj   +1 more source

Safety and mobility effects of installing speed-humps within unconventional median U-turn intersections

open access: yesAin Shams Engineering Journal, 2021
The main aim of this paper is to evaluate the effects of installing speed-humps on the safety and mobility of the unconventional median U-turn, three-leg intersections, using the VISSIM microscopic traffic simulation model.
Usama Elrawy Shahdah, Abdelhalim Azam
doaj   +1 more source

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