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Abstract Book - Ira A. Fulton Schools of Engineering - Arizona State ...

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Adaptive Sampling Applications in Hindsight Optimization Planning<br />

Alex Wallace, Computer Science<br />

Graduation: May 2011 Hometown: Cave Creek, <strong>Arizona</strong><br />

Mentor: Dr. Subbarao Kambhampati, Computer Science and <strong>Engineering</strong><br />

Grand Challenge: Enhance virtual reality<br />

Generating plans in stochastic planning environments is a difficult and time consuming process even with state<br />

<strong>of</strong> the art planners such as FF-Hindsight. This research applies a series <strong>of</strong> adaptive sampling methods around<br />

FF-Hindsight to improve the quality <strong>of</strong> plans returned by the planner, as well as allowing the planner to modify<br />

the time it takes to make a decision on an action and base it on difficulty <strong>of</strong> the problem. By creating a pool <strong>of</strong><br />

samples and distributing these based on a variety <strong>of</strong> selection methods, the planner can be more capable <strong>of</strong><br />

solving a variety <strong>of</strong> planning problems.<br />

Groundwater Recharge for Sustainable Treatment <strong>of</strong> Dissolved Organic<br />

Carbon and Disinfection By-Product Precursors<br />

Sean Wilson, Civil <strong>Engineering</strong><br />

Graduation: December 2010 Hometown: Chandler, <strong>Arizona</strong><br />

Mentor: Dr. Peter Fox, Civil and Environmental <strong>Engineering</strong><br />

Grand Challenge: Sustainability<br />

This project evaluates the potential for using groundwater recharge to remove dissolved organic carbon (DOC),<br />

with the goal <strong>of</strong> providing a sustainable alternative to the use <strong>of</strong> activated carbon in drinking water treatment<br />

plants. Historical discharge and DOC data from the SRP canal system was gathered, and a mass balance analysis<br />

was performed. Results show the south canal historical average DOC concentration (4.34 mg/L) could reduce<br />

to 3.32 or 2.49 mg/L, by respectively pumping 100,000 or 200,000 acre-ft/year <strong>of</strong> groundwater. Conclusively,<br />

recharged groundwater is an effective DOC removal method. Further research is recommended using data from<br />

additional groundwater recharge sites.<br />

Metabolic Production <strong>of</strong> (R)- and (S)-3-Hydroxybutyrate in Engineered<br />

Bacteria<br />

Nathan Wong, Bioengineering<br />

Graduation: May 2011 Hometown: Scottsdale, <strong>Arizona</strong><br />

Mentor: Dr. David Nielsen, Chemical <strong>Engineering</strong><br />

Grand Challenge: Improving biological and human systems<br />

The purpose <strong>of</strong> this project is to explore the productive capability <strong>of</strong> a novel approach towards the biosynthesis <strong>of</strong><br />

(R)- and (S)-3-hydroxybutyrate, a chemical compound that serves as a building block in the production <strong>of</strong> vitamins<br />

and antibiotics. This new approach reassimilates acetate byproduct into the production process, which will minimize<br />

losses and enhance productivity. To date, the pathway genes <strong>of</strong> interest have been amplified via PCR and cloned<br />

into suitable expression vectors. Enzyme activity is soon to be tested in vitro and in vivo within recombinant E.<br />

coli, and the full pathway will be assembled within a production host.<br />

34<br />

<strong>Arizona</strong> <strong>State</strong> University u FURI Research Symposium

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