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السجلات المعروضة 11 -- 20 من 38
Analysis of gap parameters for the estimation of single lane roundabouts' capacity in the State of Qatar
(
Elsevier B.V.
, 2021 , Conference Paper)
Entry capacity is an important parameter for evaluating the roundabout performance. In general, entry capacity is influenced by three gap parameters: critical gap, follow-up time and minimum headway of circulating vehicles. ...
Analysis of the Trajectories of Left-turning Vehicles at Signalized Intersections
(
Elsevier B.V.
, 2020 , Conference Paper)
Internationally, an annual number of more than a million fatalities are caused by road traffic crashes, with particularly signalized intersections being crash prone locations within the highway system. An accumulation of ...
Queue Discharge at Freeway On-Ramps Using Coordinated Operation of a Ramp Meter and an Upstream Traffic Signal
(
Elsevier
, 2020 , Conference Paper)
Ramp metering is an effective way of maintaining optimum traffic conditions and mitigating congestion on freeways. Several strategies for ramp metering exist in the literature. They are typically based on the freeway traffic ...
Effect of Alkaline Activators on the Mechanical Properties of Geopolymer Mortar
(
Qatar Univesrity Press
, 2020 , Conference Paper)
"Geopolymerization is a process where silica and alumina rich source materials turn
into excellent binding materials by the aid of alkali solutions. Materials such as fly ash
are by-products in energy power plants. Fly ...
Crowd Dynamics, Management and Control at Tourist Attractions during Special Events: A Case Study at Souq Waqif Using Pedestride® Crowd Simulation Tool
(
Qatar Univesrity Press
, 2020 , Conference Paper)
"Large crowds can be expected at famous tourist attractions, e.g., Souq Waqif, during
special events such as the FIFA World Cup 2022. A comprehensive understanding of
crowd dynamics is extremely important in order to ...
Evaluating the Operational Impact of Left-Turn Exclusive Number of Lanes: A Case Study from Qatar
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Left-turning movements can significantly reduce the overall capacity of signalized
intersections due to the queueing built up. Intersections with heavy left-turning volumes
tend to use multiple lanes to accommodate left-turn ...
Evaluation of Bond Strength Between Carbon Fiber Reinforced Polymer (CFRP) Composites with Modified Epoxy Resins and Concrete
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Rehabilitation and strengthening of concrete structures are becoming more significant
in civil engineering applications. The use of externally bonded Fiber Reinforced
Polymers (FRP) is one of the methods to strengthen and ...
Application of Vehicle Restraint Systems (VRSs) in the State of Qatar: A Case Study from Northern Roads
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Recent developments within Infrastructural Road Safety and especially in the Sector of
Vehicle Restraint Systems (VRS) have enabled Transport Authorities to significantly
reduce road fatalities and severe injuries. ...
Dosage Optimization of Polypropylene Fiber for Strength Enhancement of Cementitious Composites
(
Qatar Univesrity Press
, 2020 , Conference Paper)
"Concrete is the most commonly used materials for construction in Qatar as well as in
the world. Exposure to sever environmental conditions causes physical deterioration
of concrete structures and significantly affect ...
Emerging Transit Technology: Implementing an Urban Gondola System over Al Corniche, Doha, Qatar - A Cost Estimation Study
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Urban gondolas are a type of driverless transit vehicles, which are increasingly drawing
the attention as a viable mass transit alternative in urban environments and touristic
areas. The system is distinctive with high ...