|Vol I, Issue 2 February 2005|
NETS Team Member Honored
The paper discusses HarborSym a simulation model designed to assist in economic analyses of coastal harbors. Developed as a data-driven model, HarborSym has applicability to many different ports. Users customize the tool for a particular study by supplying input parameters, such as information on the harbor network, physical dimensions of channels, transit rules, and vessel calls. Changing data on channel dimensions or the rule structure will show possible changes in vessel delay times resulting from proposed harbor improvements. An application of the model to the Sabine-Neches Waterway showed substantial time savings from several possible channel expansions.
Study Shows Decrease in Carriers' Willingness
To Pay for Water Transportation
Under the federally mandated National Economic Evaluation, which is required for all potential Corps projects, the measurement standard for the value of goods and services created by projects is defined by the willingness of users to pay for each increment of output provided by a plan. In that context, the trends identified by the study have profound implications for Corps management of the existing inland navigation system, concluded the study’s author Donald Sweeney, PhD, University of Missouri, St. Louis.
Survey Finds Increases in Transportation Rates, Transit Time Affect Shipper Demand
The survey also found that increases in transit time affect demand irrespective of rate increases. This finding reflects the fact that the full cost of transportation includes time-related factors such as inventory costs, according to the study’s authors Kenneth Train, PhD of the University of California Berkley and Wesley Wilson, PhD of the University of Oregon.
The location of existing shipping facilities is fairly insensitive to changes in transportation rates and times, the survey found. The choice of where to locate new facilities, though, is highly sensitive to transportation rates. The survey of 369 shippers was conducted between December 2003 and February 2004.
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Navigation Economic Technologies Program, US Army Corps of Engineers