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Improving Cross‐Frame Design to Reduce the Effects of Skew in Steel I‐Girder Bridges

Skew of the supports in steel I-girder bridges cause undesirable torsional effects, increased cross-frame forces, and generally increase the difficulty of designing and constructing a bridge. The girders experience differential deflections due to the skew supports, and the undesirable effects arise when the girders are linked transversely. Before the placement of the deck, the main method of linking the girders transversely is through the use of cross-frames.

Effective and Equitable Supply of Gasoline to Impacted Areas in the Aftermath of a Natural Disaster

In the past few years there have been an increasing number of high-impact events that involved both a natural disaster and man-made hazardous materials; we will call these events “nahaz” events. Our purpose is to develop models and algorithms for safe transportation and equitable supply of commodities like gasoline in the aftermath of a disaster, and to provide insights on disaster recovery planning in the face of disruptions.

Integrating Real‐time GIS and Social Media for Qualitative Transportation Data Collection

In transportation planning, the activity-based model system is considered as the next-generation demand foresting model and requires the input of trip modes and purposes of individuals. GPSbased travel surveys can avoid many problems in traditional paper and phone surveys and are becoming increasingly popular in major cities worldwide. In the past few years, Dr. Gong has developed a computing system consisting of a smartphone app that transmits GPS data to an Amazon cloud server where GIS algorithms detect travel modes and trip purposes of individuals.

Spectral Based Controllability-preserving Pedestrian Evacuation Network Synthesis Using Multilayered Estimation Models in Real-time

The pedestrian evacuation problem is highly stochastic due to the extreme uncertainty associ- ated with the failures caused by natural and man-made disasters. Thus, adopting a predetermined evacuation plan may be inadequate. On the other hand, it is difficult to design evacuation plans to address every possible scenario of failure. The availability of real-time information about the pedestrian network becomes vital for timely deployment of effective and case-specific evacuation strategies.

Risk Analysis of Autonomous Vehicles in Mixed Traffic Streams

The evolution in computing, communication and vehicular technologies have resulted in connected and autonomous vehicles. Due to its potential of significantly reducing highway crashes, fatality rates and improving quality of life, the autonomous vehicles are viewed as the next revolution in the transportation system by both private sector and public agencies.

Alkali Silica Reaction (ASR) In Cement Free Alkali Activated Sustainable Concrete

Increased awareness in this decade on the significance of developing sustainable materials for construction has renewed the interest in exploring Alkali Activated Concrete (AAC), a concrete that contains no cement but only industrial by-products such as fly ash and slag, as a low energy alternative to the conventional concrete. Preliminary studies to evaluate the potential of alkali activated slag/fly ash as a sustainable alternative to Portland cement concrete is quite promising. Strength comparable to Portland cement concrete has been obtained in AAC under laboratory conditions.

Improving Freight System Performance in Metropolitan Areas

Freight flows are a physical manifestation of the manufacturing and consumption activities that are pillars of modern life. For that reason, transportation policy should ensure that freight is moved as efficiently as possible, as hampering the flow of cargo is bound to have a negative effect on the economy. At the same time, it is important to minimize the negative impacts produced by freight traffic such as congestion, pollution, noise, infrastructure damage, and deterioration of quality of life.

Market Potential for Battery Electric Vehicles based on Multi-Day Activity-Travel Patterns

There has been much interest in recent years in alternative forms of transportation that are more sustainable than technology based on the internal combustion engine. Newly developed technologies, such as Plug-in Hybrid Electric Vehicles (PHEV) and Battery Electric Vehicles (BEV), promise to greatly reduce the emission of greenhouse gases. But BEVs have a limited driving range before they must be recharged, which makes them less attractive to the buying public.

Development of a New, Effective and Low-cost Media for Sustainable Management of Polluted Road Stormwater in Highly Urbanized Areas

The population of the United States is concentrated in urban areas; 82% reside in over 500 urban areas. Despite many benefits, high urbanization leads to various environmental issues, such as polluted urban road runoff, the surface stormwater created by urbanization. Urban runoff largely from impervious surfaces such as roadways and parking lots is recognized among major nonpoint pollution sources for surface water, groundwater, and soil. The transportation-associated sources of runoff pollution are principally vehicles and atmospheric deposition.

Building a Sense of Place in an Information Era: Accessibility, Connectivity and Travel

This proposed work examines the relationships among: (i) sense of place; (ii) non-motorized sustainable travel choices and accessibility; and (iii) adoption and use of mobile information and communication technologies (ICT). A guiding principle in designing the built environment for sustainability and livability is a sense of place which leads users and visitors to perceive and associate a strong identity or character with a particular location.

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