Iowa State University
Agricultural and Biosystems Engineering
Samsuzana Abd Aziz	Background Samsuzana is currently enrolled in PhD program majoring Agricultural Engineering at the Department of Agricultural and Biosystems Engineering, Iowa State University. She received a scholarship from Government of Malaysia to obtain a doctorate degree as a preparation to become a faculty member at the Department of Biological and Agricultural Engineering, Universiti Putra Malaysia. Current Research Digital elevation model development for agricultural applications This project investigates the procedures of utilizing elevation data from field surveys and publicly available elevation dataset to developed field DEMs for conservation planning, precision agriculture, and field automation. The study also investigates the effect of DEM uncertainties on its derived parameters such as slope and slope length for subsequence studies such as soil erosion modeling. The study can be useful in a variety of ways. In one case, it could help land users, such as precision farmers, to utilize more accurate topographic information available from typical farm operations to improve their farming applications. In the other case, the uncertainty in measurements estimates was used for designing more efficient sampling technique that could benefit agricultural producers. Lastly this study could help decision makers improve their predictions in environmental management by understanding the effect of DEM uncertainty on applications. Dielectric sensing for hydraulic fluid contamination detection Degradation and contamination of the working fluids is a major cause of failures in hydraulic systems. Low cost sensors that give early warnings of fluid problems could add significant value to hydraulic systems by providing an opportunity to take corrective action prior to failure. This project is to investigate the variability in dielectric measurements across fluids and temperatures affected by different contaminations in order to develop a model for a sensing system.
Graduate Research Assistant 139 Davidson Hall 515-708-3167 suzana@iastate.edu www.abe.iastate.edu Educations M.S. Agricultural Engineering, 2004 Iowa State University B. S. Electrical Engineering, 2002 Universiti Teknologi Malaysia Honors and Awards Golden Key International Honour Society. Iowa State University Chapter. 2008. P.E.O. International Peace Scholarship Award, International Chapter P.E.O. Sisterhood. 2005-2007. Harold and Katherine Guy Graduate Fellowship. 2006. Alpha Epsilon, The Honor Society of Agricultural, Food, and Biological Engineering, 2004. Recent Publications Karkee, M., B. L. Steward and S. Abd Aziz. 2008. Improving quality of public domain digital elevation models through data fusion. Biosystems Engineering. Elsevier Ltd. Available at: http://dx.doi.org/10.1016/j.biosystemseng.2008.09.010 Karkee, M., B. L. Steward, L. Tang and S. Abd Aziz. 2008. Quantifying sub-pixel signature of paddy rice field using artificial neural network. Computers and Electronics in Agriculture. Elsevier Ltd. Available at http://doi:10.1016/j.compag.2008.07.009 Abd Aziz, S., B. L. Steward and M. Karkee. 2008. Targeted Sampling of Elevation Data Based on Spatial Uncertainty of Prior Measurements. ASABE Paper No. 084826. St. Joseph, Mich.: ASABE. Karkee, M., B. L. Steward and S. Abd Aziz. 2008. Open and Closed Loop System Characteristics of a Tractor and an Implement Dynamic Model. ASABE Paper No. 084761. St. Joseph, Mich.: ASABE. Abd Aziz, S., S. J. Birrell and B. L. Steward. 2007. Multifrequency Dielectric Sensing for Hydraulic Fluid Contamination Detection. NFPA's 5th Educator/ Industry Summit. Milwaukee, WI: NFPA. Abd Aziz, S., B. L. Steward, and S. J. Birrell. Dielectric Spectroscopy of Hydraulic Fluid Contamination Detection. Proceedings of ISFP' 2007. Beidaihe, China. Abd Aziz, S., and Brian L. Steward. 2007. Development of Agricultural Field DEM Using Repeated Measurements from Field Operations: Effects of Sampling Intensity and Pattern. ASAE Paper No. 071089. St. Joseph, Mich.: ASAE. Karkee, M., B. L. Steward and S. Abd Aziz. 2007. Distributed Virtual Reality Simulation Assisted Controller Design for Off Road Vehicle and Implement Tracking. ASAE Paper No. 073006. St. Joseph, Mich.: ASAE. Abd Aziz, S., B. L. Steward, L. Tang, M. Karkee. 2006. Multiple GPS Measurements for Digital Elevation Model. 2006. 8^th International Conference in Precision Agriculture Proceedings. Minneapolis, MN. Abd Aziz, S., B. L. Steward, L. Tang, M. Karkee. 2006. Multiple GPS Measurements for Digital Elevation Model. Proceedings of Computers in Agriculture, ASAE Paper No: 701P0606. St. Joseph, Mich.: ASAE. Abd Aziz, S., B. L. Steward, S. J. Birrell, T. C. Kaspar, D. S. Shrestha. 2004. Ultrasonic Sensing for Corn Plant Canopy Characterization. ASAE Paper No:  04112. St. Joseph, Mich.: ASAE.