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Articles 301 - 307 of 307
Full-Text Articles in Engineering
Impact Of Blended Salt Anti-Icers/Deicers On Properties Of Asphalt Binders, Nurudeen A. Abidoye
Impact Of Blended Salt Anti-Icers/Deicers On Properties Of Asphalt Binders, Nurudeen A. Abidoye
Electronic Theses and Dissertations
Anyone who has ever attempted to remove a layer of ice from a roadway or sidewalk by plowing or shoveling knows it is no easy task when the ice is firmly bonded to the asphalt/concrete surface. Winter anti-icing/deicing operations are moral choices that mankind has made to combat winter storms. This research is aimed at evaluating the macro and nano structural impacts of (anti-icing/de-icing) salt on aged and unaged asphalt binders. The macro structural impacts focused on the rheological and creep properties, and the nano structural impacts focused on the surface topography, adhesion force, and modulus of asphalt binders. Rheological …
A Microscopic Simulation Approach For Developing Ramp Metering Activation Guidelines For Weekends, Sarah T. Kasomi
A Microscopic Simulation Approach For Developing Ramp Metering Activation Guidelines For Weekends, Sarah T. Kasomi
UNF Graduate Theses and Dissertations
Traffic congestion is one of the major concerns in urban motorways. Agencies are implementing various Transportation Systems Management and Operations (TSM&O) strategies to reduce traffic congestion on roadway networks. Ramp metering is a TSM&O strategy that utilizes signals installed at freeways’ on-ramps to dynamically manage traffic entering the freeway. RMSs have been effective at alleviating recurring congestion. Recurring congestion, however, constitutes less than half of all congestion. More than half of all congestion is due to non-recurring events such as incidents, work zones, adverse weather conditions, special events, etc., that adversely affect the performance of a highway. Non-recurring congestion on …
Nonlinear Wave Evolution In Interaction With Currents And Viscoleastic Muds, Elham Sharifineyestani, Navid Tahvildari
Nonlinear Wave Evolution In Interaction With Currents And Viscoleastic Muds, Elham Sharifineyestani, Navid Tahvildari
Civil & Environmental Engineering Faculty Publications
A numerical model is extended to investigate the nonlinear dynamics of surface wave propagation over mud in the presence of currents. A phase-resolving frequency-domain model for wave-current interaction is improved to account for wave modulations due to viscoelastic mud of arbitrary thickness. The model compares well with published laboratory data and performs slightly better than the model with viscous mud-induced wave damping mechanism. Monochromatic and random wave simulations are conducted to examine the combined effect of currents, mud-induced wave dissipation and modulation, and nonlinear wave-wave interactions on surface wave spectra. Results indicate that current effects on wave damping over viscoelastic …
Exploring And Visualizing Spatial Effects And Patterns In Ride-Sourcing Trip Demand And Characteristics, Bishoy Kelleny, Sherif Ishak
Exploring And Visualizing Spatial Effects And Patterns In Ride-Sourcing Trip Demand And Characteristics, Bishoy Kelleny, Sherif Ishak
Civil & Environmental Engineering Faculty Publications
The complex demand pattern of ride-sourcing remains to be a challenge to transportation modeling practitioners due to the infancy and the inherently dynamic nature of the ride-sourcing system. Spatial effects exploration and analysis protocols can provide informative insights on the underlying structure of demand and trip characteristics. Those protocols can be thought of as an opportunistic strategy to alleviate the complexity and help specifying the appropriate econometric models for the system. Spatial effects exploration is comparable to point pattern analysis, in which, signals from spatial entities, like census tracts, can be analyzed statistically to reveal whether a specific phenomenon respective …
Save-T: Safety Analysis Visualization And Evaluation Tool, Yuan Zhu, Sami Demiroluk, Kaan Ozbay, Kun Xie, Hong Yang, Di Sha
Save-T: Safety Analysis Visualization And Evaluation Tool, Yuan Zhu, Sami Demiroluk, Kaan Ozbay, Kun Xie, Hong Yang, Di Sha
Civil & Environmental Engineering Faculty Publications
Traffic crashes are one of the biggest issues which constitute a threat to lives of the motorists and disrupt operations of the transportation system. To reduce the number of crashes and alleviate their impacts, it is necessary to scrutinize the factors contributing to the risk of traffic crashes. Lately, visual analytics tools become very popular for data exploration and obtaining insights from the data. In this paper, a new web-based data visualization tool called Safety Analysis Visualization and Evaluation Tool (SAVE-T) was introduced. This tool enables users to interactively create queries and visually explore the results. By utilizing an online …
The Effects Of The Coronavirus On Transportation, Brittney Crandall
The Effects Of The Coronavirus On Transportation, Brittney Crandall
Williams Honors College, Honors Research Projects
This year the world has been challenged with the Coronavirus pandemic. This has led to national shutdowns which have negatively affected many aspects of everyday life. One of the industries that has seen adverse effects from the global pandemic is the transportation industry. This raises the question of exactly how the transportation industry has been affected by the pandemic, what the long-term effects will be, and what the future of the transportation industry will look like. Using existing data and research, predictions will be made to solve these questions.
Side Impact Collisions: Trucks Versus Sedans, Mackenzie Cheyney
Side Impact Collisions: Trucks Versus Sedans, Mackenzie Cheyney
Williams Honors College, Honors Research Projects
The proposed project will cover the effects of FMVSS 214 addendum to include light trucks. The addition of side door beams, air bags, and a dynamic performance requirement are the main points of FMVSS 214 which will be discussed. The effects of these safety measures will be compared between light trucks and sedans. NHTSA reports regarding the effects of FMVSS 214 will be reviewed in this paper. Based on the NHTSA literature reviews, further recommendations will be made.