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A Multi-Objective Decision-Making Framework For Transportation Investments, Mashrur Chowdhury, Pulin Tan
A Multi-Objective Decision-Making Framework For Transportation Investments, Mashrur Chowdhury, Pulin Tan
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This paper presents a framework based on multi-objective optimization that can be used to generate and analyze the most desirable transportation investment options based on their objectives and constraints. The framework, which is based on the surrogate worth trade-off analysis, could be applied to both discrete or continuous decision-problem scenarios. In a discrete problem, a predefined set of alternatives is available, whereas continuous problems are not characterized by a predefined set of alternatives. This framework was applied with the data generated for a Capital Beltway Corridor investment study. The multi-objective decision-making framework was found to be adaptable to this typical …
The Reactivity Of Dissolved Organic Matter For Disinfection By-Product Formation, Mehmet Kitis, Tanju Karanfil, James E. Kilduff
The Reactivity Of Dissolved Organic Matter For Disinfection By-Product Formation, Mehmet Kitis, Tanju Karanfil, James E. Kilduff
Publications
Dissolved organic matter (DOM) in 6 water samples collected from 4 surface waters were fractionated using some or all of 5 physicochemical separation processes (activated carbon and XAD-8 batch adsorption, alum coagulation, ultrafiltration (UF), and XAD-8 column fractionation). Activated carbon, XAD-8 batch adsorption and alum coagulation processes fractionated DOM by preferentially removing high-SUVA components from solution. The XAD-8 column method fractionated DOM into hydrophobic and hydrophilic components while UF separated DOM into different size fractions. Over 40 DOM fractions, characterized using carbon-normalized (specific) ultraviolet absorbance (SUVA), were obtained for each water. Trihalomethane (THM) and haloacetic acid (HAA_9) formation after chlorination …