نتایج جستجو برای: waterways
تعداد نتایج: 1487 فیلتر نتایج به سال:
Control of nonpoint source pollution is essential for improving water quality. The Environmental Protection Agency reports that the three primary pollutants to the nation's waterways are bacteria, nutrients, and sediment. Runoff from grazed pastures and manure applied land often contains high concentrations of fecal coliforms and nutrients. To control and treat this runoff, a low-cost, highly e...
AIS (Automatic Identification System) data provides valuable input parameters in ship traffic simulation models for risk analysis and the prevention of shipping accidents. This paper reports on the detailed analysis of AIS data for modeling purposes. This analysis is focused on restricted waterways to support inland waterway simulations, comparing the differences between a narrow waterway in th...
The US Coast Guard (USCG) is charged with maintaining an acceptable level of safety in US ports and waterways. Allocating resources to solve safety problems is difficult because multiple attributes of a port or waterway affect its safety and determine whether a particular safety measure will improve it. We based the ports and waterways safety assessment (PAWSA) model on multiattribute decision ...
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