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Year - 2007

The retrofit puzzle: optimal fleet owner behavior in the context of diesel retrofit incentive programs

Potential government regulations and financial incentives for encouraging pollution reduction retrofits on diesel vehicles are discussed. An integer program is developed to model profit-maximizing fleet owner behavior in the context of potential government programs. The model is intended as a tool both for fleet owners and for government administrators. It allows for mandated retrofits, mandated percent reductions of specified emissions, fixed grants for performing retrofits, and grants per gram of pollution prevented.

Design of a Scale Model to Evaluate the Dispersion of Biological and Chemical Agents in a NYC Subway Station

Urban subway systems remain among the most susceptible to a terrorist attack by biological or chemical agents (BCA) because they are heavily trafficked and have limited points of egress. The combination between efficient creation of casualties and anonymity afforded to terrorists make subways attractive targets. However, the disproportionate amount of passengers to subway employees, limits the ability of transit workers to identify suspicious activity.

Blast Load Effects on Highway Bridges

There has been increased awareness about safety of highway bridges from intentional/unintentional blast loads. This report focuses on the investigation of behavior of various bridge components during blast loads through a high fidelity finite element model of a typical highway bridge. Computer programs, such as LS-DYNA offer detonation simulation capabilities to propagate blast loads through air medium. However, blast pressures generated by such programs are significantly different than those by ConWep, a computer program based on semi-empirical equations.

Operational Analysis Technical Guidance & Support

In recent years computer simulation has become one of the most widely used and powerful tools in providing synthetic versions of highway traffic. Traffic simulation allows us to understand the current network characteristics, and predict the likely impact of the desired system under various demands and network conditions, where physical experimentation is difficult or often impossible. In this context, computer simulation is a very helpful offline tool for testing the proposed system components prior to implementation.

Inventory of Policies Affecting Parking Within the NYMTC Region

Parking is one of the key components of any new development or a redevelopment project. It is one of the prime issues for home owners, businesses, residents and policy makers across different municipalities in the region. The minimum parking requirements as required by the municipal codes affect the site design and density of the structure. Zoning ordinances, which specify the parking requirements, can be an effective tool in regulating the supply and eventually the demand for parking.

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