Peer-Reviewed Articles

*MS, Ph.D., Post Doc, or Research Scientist supervised by Steward.

 

Peer-Reviewed Journal Articles

 

  1. Aziz, S. A., B. L. Steward. A. L. Kaleita, and M. Karkee. 2012. Assessing the effects of DEM error uncertainty on soil loss estimation in agricultural fields. Transactions of the ASABE. Accepted for publication.

 

  1. Sabarense, C. M., K. S. O. Rocha, D. D. Rosa, J. H. Martins, M. M.L. S.Pereira, F. F. Silva, and B. L. Steward. 2012. A new computational method for hepatic fat microvesicles counting in histological study in rats. Biochemical and Biophysical Research Communications 418(2):284-289. doi:10.1016/j.bbrc.2012.01.011

 

  1. Karkee, M., R. P. McNaull, S. J. Birrell, and B. L. Steward. 2012. Estimation of optimal biomass removal rate based on tolerable soil erosion for single-pass crop grain and biomass harvesting system. Transactions of the ASABE 55(1): 107-115.

 

  1. Karkee, M. and B. L. Steward. 2011. Parameter estimation and validation of a tractor and single axle towed implement dynamic system model. Computers and Electronics in Agriculture 77(2): 135-146. doi:10.1016/j.compag.2011.04.005. 

 

  1. Visser, E. M.,  D. Oliveira Filho, M. A. Martins, B. L. Steward. 2011. Bioethanol Production Potential from Brazilian Biodiesel Co-products. Biomass and Bioenergy 35(1): 489-494.

 

  1. Bandari, A., S. K. Ong, B. L. Steward. 2011.  Development of a sustainable engineering course. ASCE Journal of Professional Practice in Engineering Education and Practice. In Press.

 

  1. Karkee, M. and B. L. Steward. 2010. Study of the Open and Closed Loop Characteristics of a Tractor and a Single Axle Towed Implement System. Journal of Terramechanics 47(6): 379–393. DOI: 10.1016/j.jterra.2010.05.005.

 

  1. Karkee, M., and B. L. Steward. 2010. Local and Global Sensitivity Analysis of a Tractor and Single Axle Grain Cart Dynamic System Model. Biosystems Engineering 106(4): 352-366.

 

  1. Aziz, S. A., B. L. Steward and M. Karkee. 2010. Using spatial uncertainty of prior measurements to design targeted sampling of elevation data. Transactions of the ASABE 53(2): 349-357.

 

  1. Hanna, H. M. H., B. L. Steward, and L. Aldinger. 2010. Soil loading effects of planter depth-gauge wheels on early corn growth. Applied Engineering in Agriculture 26(4):551-556.

 

  1. Karkee, M., B. L. Steward, A. G. Kelkar, and Z. T. Kemp II. 2010. Modeling and Real-time Simulation Architectures for Virtual Prototyping of Off-Road Vehicles. Virtual Reality. DOI: 10.1007/s10055-009-0150-1.

 

  1. S. A. Aziz. B. L. Steward, L. Tang, and Karkee, M. 2009. Utilizing repeated GPS measurement from field operations for development of agricultural field DEM. Transactions of ASABE. 52(4): 1057-1067.

 

  1. Karkee, M., B. L. Steward, L. Tang, and S. A. Aziz. 2009. Quantifying sub-pixel signature of paddy rice field using an artificial neural network. Computers and Electronics in Agriculture. 65: 65-76.

 

  1. Karkee, M., B. L. Steward, and S. A. Aziz. 2008. Improving Quality of Public Domain Digital Elevation Models through Data Fusion. Biosystems Engineering. 101(3): 293–305.

 

  1. Knot, L., L. Tang, B.L. Steward, S. Han. 2008.  Sensor Fusion for Improving Roll and Pitch Estimation for an Agricultural Sprayer Vehicle. Biosystems Engineering 101(2008): 13-20.

 

  1. Thorp, K.R., B.L. Steward, A.L. Kaleita, and W.D. Batchelor.  2008.  Using aerial hyperspectral remote sensing imagery to estimate corn plant stand density.  Transactions of the ASABE. 51(1):311-320.

 

  1. Kaleita, A. L., B. L. Steward, R. P. Ewing, D. A. Ashlock,  M. E. Westgate, and J. L. Hatfield. 2006.  Novel Analysis Of Hyperspectral Reflectance Data For Detecting Onset Of Pollen Shed In Maize.  Transactions of the ASAE. 49(6): 1947−1954.

 

  1. Thorp, K.R.*, W.D. Batchelor, J.O. Paz, B. L. Steward, and P. C. Caragea. 2006.  Methodology to link production and environmental risks of precision nitrogen management strategies in corn.  Agricultural Systems. 89(2-3): 272-298.

 

  1. Brumm, T. J., S. K. Mickelson, B. L. Steward and A. L. Kaleita-Forbes. 2006.  Competency-based outcomes assessment for agricultural engineering programs. International Journal of Engineering Education. 22(6): 1163-1172.

 

  1. Steward, B. L., S. K. Mickelson, and T. J. Brumm. 2005. Continuous engineering course improvement through synergistic use of multiple assessment.  International Journal of Engineering Education. 21(2): 277-287.

 

  1. Shrestha, D. S.* and B. L. Steward.  2005. Shape and size analysis of corn plant canopies for plant population and spacing sensing. Applied Engineering in Agriculture. 21(2): 295-303.

 

  1. Westphalen, M. L.*, B.L. Steward, and S.F. Han. 2004.  Topographic mapping through measurement of vehicle attitude and elevation. Transactions of ASAE 47(5): 1841-1849.

 

  1. Shrestha, D. S.*, B. L. Steward, and S. J. Birrell. 2004. Image processing algorithms for early stage maize plant detection. Biosystems Engineering 89(2): 119-129.

 

  1. Steward, B. L., S. K. Mickelson, and T. J. Brumm. 2004. Formative and summative assessment techniques for continuous agricultural technology classroom improvement.  NACTA Journal. 48(2): 33-41.

 

  1. Miller, M. A.,* B. L. Steward, and M. L. Westphalen.*­ 2004.  Effects of multi-mode four-wheel steering on sprayer machine performance.  Transactions of the ASAE 47(2): 385-395.

 

  1. Steward, B. L., L. F. Tian, D. Nettleton, and L. Tang. 2004. Reduced-dimension clustering for vegetation segmentation. Transactions of the ASAE 47(2): 609-616.

 

  1. Shrestha, D. S.* and B. L. Steward. 2003. Automatic corn plant population measurement using machine vision. Transactions of the ASAE 46(2): 559–565.

 

  1. Tang, L., L.F. Tian, and B. L. Steward. 2003. Texture-based real-time broadleaf and grass classification for selective weed control. Transactions of the ASAE 46(4): 1247–1254.

 

29.  Steward, B. L., L. F. Tian, and Tang L. 2002. Distance-based control system for machine vision-based selective spraying.  Transactions of the ASAE 45(5).

 

30.  Steward, B. L. and D. S. Humburg. 2000. Modeling the Raven SCS-700 chemical injection system with carrier control.  Transactions of the ASAE 43(2):231-245.

 

31.  Tang, L., L. F. Tian, and B. L. Steward. 2000. Supervised color image segmentation by genetic algorithm for real-time weed sensing in outdoor lighting conditions.  Transactions of the ASAE 43(4): 1019-1027.

 

32.  Tang, L., L. F. Tian, and B. L. Steward. 2000. Machine vision-based high-resolution weed mapping and patch-sprayer performance simulation. SAE Transactions - Journal of Commercial Vehicles 108(2):  317-326.

 

33.  Steward, B. L. and L. F. Tian. 1999.  Machine vision weed density estimation for real-time outdoor lighting conditions. Transactions of the ASAE 42(6): 1897-1909.

 

Peer-Reviewed Conference Proceedings

 

  1. Santos, E. S., P. C. Corrêa, B. L. Steward, and D. M. Queiroz. 2011. Object-oriented model of fixed-bed drying of coffee berries. In Proc. of 10th International Conference on Modeling and Applied Simulation, Sept. 12-14, 2011, Rome, Italy.

 

  1. Karkee, M.*, M. Monga, B. L. Steward, J. Zambreno, A. G. Kelkar. 2010. Real-time Simulation and Visualization Architecture with Field Programmable Gate Array (FPGA) Simulator. The Proc. of the ASME 2010 World Conference on Innovative Virtual Reality (WINVR2010), May 12-14, 2010, Ames, Iowa, USA.

 

  1. S. A. Aziz, B. L. Steward, and S. J. Birrell. 2007. Dielectric spectroscopy of hydraulic fluid for contamination detection. In Proceedings of ISFP’2007: 5th International Symposium on Fluid Power Transmission and Control, Beidaihe, China, June 6-8.

 

  1. Brumm, T.J., S.K. Mickelson, B.L. Steward, A.L. Kaleita-Forbes and C.J. Bern. 2005.  ABET is Coming!  Getting Faculty Involved.  In Proceedings of the Annual Meeting of the American Society for Engineering Education, Portland, OR, June.

 

  1. Steward, B. L., R. P. Ewing, D. A. Ashlock, A. L. Kaleita, and S. M. Shaner. 2004. Range operator enabled genetic algorithms for hyperspectral analysis. In Intelligent Engineering Systems Through Artificial Neural Networks: Smart Engineering Systems Design: Neural Networks, Fuzzy Logic, Evolutionary Programming, Complex Systems and Artificial Life, Vol. 14. eds. C. H. Dagli, A. L. Buczak, D. L. Enke, M. J. Embrechts, and O. Ersoy, 295-300. New York. ASME Press.

 

  1. Suzhen L., G. Manimaran, B. L. Steward.  2004.  Feedback-based Real-time Scheduling in Autonomous Vehicle Systems.  Proceedings of the 10th IEEE Real-Time Technology and Applications Symposium (RTAS). Le Royal Meridien, King Edward, Toronto, Canada. 25-28 May.

 

  1. Mickelson, S. K., Brumm, T. J., Hanneman, L., and B. L. Steward. 2003. Using Engineering Competency Feedback to Assess Agricultural Engineering Curriculum. In Proceedings of the Annual Meeting of the American Society for Engineering Education, Knoxville, TN: ASEE.

 

  1. Shrestha, D. S.*, B. L. Steward, and T. C. Kaspar. 2002. Determination of early stage corn plant height using stereo-vision. Proceedings of the 6th Int'l. Conf. on Precision Agriculture, eds. P.C. Robert, R. H. Rust and W. E. Larson, Madison WI: ASA- CSSA-SSSA.

 

  1. Miller, M. A.* and B. L. Steward. 2002.  Control and Evaluation Methods for Multi-Mode Steering.  Proc. of Automation Technology for Off-road Equipment Conference, ed.  Q. Zhang., 357-366. Chicago, IL, 26-27 July.

 

  1. Shrestha, D. S.*, B. L. Steward, and E. Bartlett. 2001. Segmentation of plant from background using neural network approach. Proc. of Artificial Neural Networks in Engineering Conference (ANNIE 2001) eds. C. H. Dagli et al., 903-908. St. Louis, MO, 4-7 Nov.

 

  1. Tang, L., L. F. Tian, and B. L. Steward. 1999. Machine vision-based high-resolution weed mapping and patch-sprayer performance simulation. In SAE SP-1417, Agricultural Machinery, Tires, Tracks, and Traction, 126-135. Warrendale, PA: SAE.

 

Other Publications

*MS, Ph.D., Post Doc, or Research Scientist supervised by Steward.

 

Conference Proceedings

 

1.     Hanna, H. M., J. Kruckeberg, M. Darr, and B. L. Steward.  2009.  Nozzle and droplet size effects on pesticide performance and drift. In Proc. of 21st Annual Integrated Crop Management Conference, December 2 and 3, Iowa State University, Ames, IA, pp. 49-52.

 

2.     Steward, B. L., S.-K. Ong, and K. M. Bryden 2007. Sustainable Engineering Education for Agri-Food Systems Development. In Proc. of International Conference on 21st Century Challenges to Sustainable Agri-food Systems. Bangalore, India, March 15-17.

 

3.     Aziz, S. A.., B. L. Steward, L. Tang, M. Karkee. 2006. Multiple GPS Measurements for Digital Elevation Model. Proc. of the Computers in Agriculture and Natural Resources, 4th World Congress Conference. ASABE Paper No. 701P0606. St. Joseph, Mich.:  ASABE.

 

4.     Aziz, S. A., B. L. Steward, L. Tang, and M. Karkee. 2006. Multiple gps measurements for digital elevation model. 2006. Proceedings of the 8th Int'l. Conf. on Precision Agriculture, eds. R. H. Rust and W. E. Larson, Madison WI: ASA- CSSA-SSSA.

 

5.     Haegele, J., B. L. Steward, E. Visser, M. Martinez, C. Deal, D. Oliveira, C. Marcos, A. Delboni, R. Vieira, and F. Carneiro. 2006. Modeling a renewable energy system to meet university energy needs and promote regional sustainable development. Proc. of the 4th International Conference on Environmental Management for Sustainable Universities (EMSU). Stevens Point, Wisconsin, USA, June 26-30.

 

6.     Thorp, K. R.*, W. D. Batchelor, J. O. Paz, and B. L. Steward. 2004. Estimating yield and environmental risks associated with variable rate nitrogen management for corn using Apollo. Proceedings of the 7th Int'l. Conf. on Precision Agriculture, eds. R. H. Rust and W. E. Larson, Madison WI: ASA- CSSA-SSSA.

 

7.     Steward, B. L., T. J. Brumm, S. K. Mickelson. 2003. Understanding patterns in student learning styles to guide curriculum innovation. In Proceedings of the 2003 ASEE North Midwest Regional Conference, Ames, IA: ASEE.

 

8.     Shrestha, D. S.* and B. L. Steward. 2002. Early growth stage corn plant population measurement using neural network approach.  Proc. of World Congress of Computers in Agriculture and Natural Resources, eds. F. Zazueta and J. Xin, 8-14. Iguaçu Falls, Brazil, 13-15 Mar.

 

9.     Steward, B. L. 1999. Weed Sensing - Where are we?  In Proceedings of the 11th Annual Integrated Crop Management Conference, 193-205.  Ames, IA:  Iowa State University.

 

10.  Steward, B. L. and J.W. Hummel. 1999. Soybean moisture content measurement based on impact force parameters. Proceedings of the 4rd Int'l. Conf. on Precision Agriculture, eds. P.C. Robert, R. H. Rust and W. E. Larson, 1241-51, Madison WI: ASA- CSSA-SSSA.

 

11.  Steward, B. L. and L. F. Tian. 1998. Real-time weed detection in outdoor field conditions. In Proceeding of  SPIE 3543, Precision Agriculture and Biological Quality, eds. G. E. Meyer and  J. A. DeShazer, 266-278. Bellingham, Wash.: SPIE.

 

Professional Society Conference Papers

 

  1. Nielsen, S. L., M. Karkee, and B. L. Steward. 2011. Methodology to perform identifiability analysis for off-road vehicle tire-soil parameter estimation. ASABE Paper No. 1111526. St. Joseph, Mich.: ASABE.

 

2.     Xu, L. M. Yang. and B. L. Steward. 2011. System of Field Operations for Double-Cropped Paddy Rice Production Mechanization in South China. ASABE Paper No. 1111647. St. Joseph, Mich.: ASABE.

 

3.     Karkee, M., R. P. McNaull, S. J. Birrell, B. L. Steward. 2010. Agricultural biomass removal rate estimation for real-time optimization of single pass crop grain and biomass harvesting system. ASABE Paper No. 1009973. St. Joseph, Mich.: ASABE.

 

4.     Kruckeberg, J. P., H. M. Hanna, M. J. Darr, B. L. Steward. 2010. An interactive spray drift simulator.  ASABE Paper No. 1008842. St. Joseph, Mich.: ASABE.

 

5.     Karkee, M. and B. L. Steward 2009. Parameter Sensitivity Analysis of a Tractor and Single Axle Grain Cart Dynamic System Model. ASABE Paper No. 097295. St. Joseph, Mich.: ASABE.

 

6.     Karkee, M. and B. L. Steward 2008. Open and closed loop system characteristics of a tractor and an implement dynamic model. ASABE Paper No. 084761. St. Joseph, Mich.: ASABE.

 

7.     H M. Hanna, B. L. Steward, and L. Aldinger. 2008. Soil loading effects of planter depth-gauge wheels on early corn growth. ASABE Paper No. 083968. St. Joseph, Mich.: ASABE.

 

8.     S. Abd Aziz and B. L. Steward. 2008. Targeted sampling of elevation data based on spatial uncertainty of prior measurements. ASABE Paper No. 084826. St. Joseph, Mich.: ASABE.

 

9.     Kaleita, A. L., S. K. Mickelson, B. L. Steward, and T. J. Brumm. 2007. International agriculture case studies for enhancement of undergraduate competency in cultural adaptability. ASABE Paper No. 078015. St. Joseph, Mich.: ASABE.

 

10.  S. A. Aziz and B. L. Steward. 2007. Development of agricultural field DEM using repeated GPS measurements from field operations: effects of sampling intensity and pattern. ASABE Paper No. 071089. St. Joseph, Mich.: ASABE.

 

11.  Karkee, M., B. L. Steward, and S. A. Aziz. 2007. Distributed virtual reality simulation assisted steering controller design for off road vehicle and implement tracking. ASABE Paper No. 073006. St. Joseph, Mich.: ASABE.

 

12.  Thorp, K.R., B.L. Steward, A.L. Kaleita, and W.D. Batchelor. 2006. Using Aerial Hyperspectral Remote Sensing Imagery to Estimate Corn Plant Stand Density. ASABE Paper No. 063015. St. Joseph, Mich.: ASABE.

 

13.  Khot, L. R., L. Tang, B. L Steward, and S. Han. 2006. Sensor Fusion for Roll and Pitch Estimation Improvement of an Agricultural Sprayer Vehicle. ASABE Paper No. 0631159. St. Joseph, Mich.:  ASABE.

 

14.  Karkee, M., B. L. Steward, L. Tang. 2006. Neural Approach of Sub-pixel Rice Landuse Classification for Optimized Irrigation Scheduling. ASABE Paper No. 062124. St. Joseph, Mich.:  ASABE.

 

15.  Karkee, M., Kusanagi, M., and B. L. Steward. 2006. Fusion of Optical and InSAR DEMs: Improving the Quality of Free Data. ASABE Paper No. 061172. St. Joseph, Mich.:  ASABE.

 

16.  Kaleita, A. L., B. L. Steward, R. P. Ewing, and D. A. Ashlock. 2005. Genetic algorithms for Hyperspectral Range and Operator Selection. ASAE Paper No. 053063. St. Joseph, Mich.:  ASABE.

 

  1. Steward, B. L., T. J. Brumm, and S. K. Mickelson. 2004. Formative and Summative Assessment in Agricultural Engineering and Technology Courses. ASAE Paper No. 048032. St. Joseph, MI.

 

  1. Abd Aziz, S.*, B. L. Steward, S. J. Birrell, D. S. Shrestha*, and T. C. Kaspar. 2004. Ultrasonic Sensing for Corn Plant Canopy Characterization. ASAE Paper No. 041120. St. Joseph, MI.

 

  1. Li, B.*, B. L. Steward, S. Han. 2004. Agricultural vehicle posture estimation using dual DGPS receivers and a Kalman filter. ASAE Paper No. 041058. St. Joseph, MI.

 

  1. Li, B.*, B. L. Steward, S. Han. 2004. Integration of digital elevation models with vehicle dynamics for vehicle pitch and roll angle estimation. ASAE Paper No. 041057. St. Joseph, MI.

 

  1. Shrestha D. S.,* B. L. Steward, B. Li*, and K. R. Thorp*. 2004. A rapid video frame correspondence algorithm using a Kalman filter. ASAE Paper No. 043058. St. Joseph, MI.

 

  1. Li, B.*, B. L. Steward, S. Han. 2004. Attitude estimates of an agricultural vehicle operated on slopes – static study. ASAE Paper No. MC04 - 102. St. Joseph, MI.

 

  1. Shrestha, D. S.,* and B. L. Steward, 2003. An object-oriented architecture for field data acquisition, Processing and Information Extraction. ASAE Paper No. 033089. St. Joseph, MI.

 

  1. Stevermer, S. W.,* B. L. Steward, R. P. Cogdill, and C. R. Hurburgh. 2003. Automated sorting and single kernel analysis by near-infrared hyperspectral imaging. ASAE Paper No. 036159. St. Joseph, MI.

 

  1. Westphalen, M. L.,* B. L. Steward, and S. Han. 2003. Topographic mapping through measurement of vehicle attitude. ASAE Paper No. 031008. St. Joseph, MI.

 

  1. Shrestha, D. S.,* B. L. Steward, S. J. Birrell, and T. C. Kaspar. 2002. Corn Plant Height Estimation Using Two Sensing Systems. ASAE Paper No. 021197. St. Joseph, MI.

 

  1. Shrestha, D. S.,* and B. L. Steward. 2001. Automatic corn plant population measurement using machine vision. ASAE Paper No. 011067. St. Joseph, MI.

 

  1. Humburg, D. S., B. L. Steward, X. Chen. 2001. Control simulation and modeling of a PWM sprayer system in variable rate chemical application. ASAE Paper No. 013034. St. Joseph, MI.

 

  1. Tang, L., L. Tian, and B. L. Steward. 2000. Development of a low-cost machine vision system for selective sprayer. ASAE Paper No. 003064, St. Joseph, MI.

 

  1. Steward, B. L., L. F. Tian, and L. Tang. 2000. Real distance control for real-time machine vision-based precision farming. ASAE Paper No. 00AETC107, St. Joseph, MI.

 

  1. Steward, B. L., L. F. Tian, and L. Tang. 1999. Detection of outdoor lighting variability for machine vision-based precision agriculture.  ASAE Paper No. 99-3032, St. Joseph, MI.

 

  1. Tang, L., L. F. Tian, B. L. Steward, J. F. Reid. 1999. Texture-based weed classification using Gabor wavelets and neural network for real-time selective herbicide application. ASAE Paper No. 99-3036, St. Joseph, MI.

 

  1. Yao, H.,  L. F. Tian, L. Tang, and B. L. Steward. 1999. Smart sprayer performance simulation. ASAE Paper No. 99-1103, St. Joseph, MI.

 

  1. Steward, B. L. and L. F. Tian. 1998. Real-time machine vision weed-sensing.  ASAE Paper No. 98-3033. ASAE, St. Joseph, MI.

 

Abstracts and Posters

 

  1. Hall, S. J. and B. L. Steward. 2011. Calibration of a First Principles Loss Model for a Hydrostatic Pump.  National Fluid Power Association Industry and Economic Outlook Conference, Schaumburg, IL. August 15-17.

 

  1. Steward, B. L. and Birrell, S. J. 2011 Dielectric Spectroscopic Sensor Development for Hydraulic Fluid Contaminant Detection.  National Fluid Power Association Industry and Economic Outlook Conference, Schaumburg, IL. August 15-17.

 

  1. Ahmad, M. T., L. Tang, and B. L. Steward. 2011. Development of a Mechanical Intra-Row Weeding Actuation System for Organic Vegetables. ASABE Annual International Meeting, Louisville, KY. August 7-10.

 

  1. Kruckeberg, J. P., H. M. Hanna, B. L. Steward, and M. J. Darr. 2011.  Influence of Dynamic Weather Conditions on Spray Drift. ASABE Annual International Meeting, Louisville, KY. August 7-10.

 

  1. Xu, L., M. Yang, L. Snell, and B.L. Steward. 2011. Determining Machinery Requirements for Double-cropped Paddy Rice Production in South China Based on Monte Carlo Simulation. ASABE Annual International Meeting, Louisville, KY. August 7-10.

 

  1. Bhandari, A., N. Keren, A. L. Kaleita, B. L. Steward, S. K. Ong, 2009. Developing cultural adaptability through international service learning. Poster at the 12th Annual Colloquium on International Engineering Education, Ames, IA. October 22-25.

 

  1. Aziz, S. A., M. Karkee, B. L. Steward, S. J. Birrell, and S. L. Nielsen. 2009. Dielectric Sensing for Detecting Water, Metal and Dust Contamination in Hydraulic Fluids. NFPA Industry and Economic Outlook Conference, Wheeling, IL, August 18-19.

 

  1. Bhandari, A., N. Keren, A. L. Kaleita, B. L. Steward, S. K. Ong. 2009. Developing Cultural Adaptability through International Service Learning. Poster at the Association of Environmental Engineering and Science Professors Conference, Iowa City, IA, July 27-28.

 

  1. Kaleita, A. L., A. Bhandari, B. L. Steward, and N. Keren. 2009. Assessing Cultural Adaptability with Scenario-Based Decision Games. International Annual Meeting of ASABE, Reno, NV, June 21-24.

 

  1. Abd Aziz, S., B. L. Steward, S. J. Birrell. 2007. Multifrequency dielectric sensing for hydraulic fluid contamination detection. NFPA Fall Conference, Wheeling, IL.

 

11.  Birrell, S. J., and B. L. Steward. 2005. Multifrequency dielectric sensing for hydraulic fluid condition. NFPA Fall Conference, Pittsburgh, PA.

 

12.  Steward, B. L., L. Tang, S. J. Birrell, and A. Van De Walle. 2005. Development of a fluid-powered autonomous agricultural vehicle. NFPA Fall Conference, Pittsburgh, PA.

 

13.  Romans, K. W., S. J. Birrell, B. L. Steward, and A. Van De Walle. 2005. Modeling and characterizing a low power hydromechanical transmission. NFPA Fall Conference, Pittsburgh, PA.

 

  1. Romans, K. W., S. J. Birrell, and B. L. Steward. 2004. Modeling and characterizing a low power hydromechanical transmission. NFPA Educator/Industry Summit, Scottsdale, AZ, September 30-October 1.

 

  1. Brumm, T. J., S. K. Mickelson, B. L. Steward, and A. L. Kaleita. 2004. Work place competency-based outcomes assessment for agricultural engineering and agriculture technology programs. ASAE Paper No. 048033. St. Joseph, MI.

 

  1. Brumm, T. J., S. K. Mickelson, B. L. Steward, and A. P. Ellertson. 2004. Learning communities to improve retention and bring meaning to first-year students in agricultural engineering and agricultural technology programs.  ASAE Paper No. 048034. St. Joseph, MI.

 

  1. Lo, Y.-C., B. L. Steward., B. Li*, and T. Shepherd. 2004. Estimation of off-road vehicle attitude using DEM and a single GPS measurement. PWSE Summer Internship Poster Presentation and Reception. Iowa State University, Ames, Iowa, July 23.

 

  1. Brumm, T.J., A. Ellertson, S.K. Mickelson and B.L. Steward. 2004.  Implementing electronic portfolios for program assessment and student learning.  Annual Meeting of the American Society for Engineering Education, Salt Lake City, UT, June 20-23.

 

  1. Suzhen L., G. Manimaran, B. L. Steward.  2003. Feedback-based adaptive scheduling in real-time systems, JV Atanasoff Syposium. Iowa State University, Ames, Iowa, October 30 - November 1.

 

  1. Steward, B. L., T. J. Brumm, S. K. Mickelson. 2003. Summative and formative assessment of learning and instruction in Fluid Power courses. NFPA Educator/Industry Summit, Indianapolis, IN, October 24-25.

 

  1. Shrestha, D. S.* and B. L. Steward. 2002. Automatic corn plant population measurement using machine vision.  Poster presented at AETC 2002, Kansas City, MO, February 21-22.

 

  1. Steward, B. L., L. F. Tian, and L. Tang. 1999. Image segmentation for real-time outdoor machine vision weed detection. Poster presented at AETC 1999, Louisville, KY, February 7-10.

 

  1. Tang, L., L. F. Tian, and Steward, B. L. 1999. Machine vision weed mapping and criteria analysis for selective herbicide application. Poster presented at AETC 1999, Louisville, KY, February 7-10.

 

  1. Steward, B. L., L. F. Tian, L. Tang, and J. F. Reid. 1998. Real-time weed infestation detection system for precision sprayers. Poster presented at AETC 1998, Louisville, KY, February.

 

Final Reports

 

1.     A. Kelkar, B. L. Steward, Z. Kemp, K. Kappagantula, M. Karkee. Development of VR-based Prototyping Architecture for Real-time Control of Machines in Virtual Environment with Operator-Interface. Final Project to Deere and Company.  May 2008. 41 pp.

 

2.     B. L. Steward. SENCER Final Report. July 2007. 13 pp.

 

3.     B. L. Steward, L. Tang, S. A. Aziz,  J. A. Bosserd, M. Karkee, and L. Knot. Using Topographic Information for Improved Vehicle Navigation Control. Final Report to John Deere Agricultural Management Solutions. July 2007. 111 pp.

 

4.     B. L. Steward, T. J. Brumm, D. Oliveira, W. Hermsdorf, J. S. Silva. Renewable Resources To Power A University – A Model For Regional Sustainable Development. Phase I Final Report to US EPA. April 2006. 20 pp.

 

5.     B. L. Steward, Brazil Project Report. Report to Iowa Department of Natural Resources. April 2006. 14 pp.

 

6.     Steward, B. L. and M. L. Westphalen*. Development and Evaluation of an Active Rear Wheel Steering System. Final Report to John Deere Des Moines Works – Sprayer Products. January 2006. 53 pp.

 

7.     Steward, B. L. Real-Time Machine Vision Early Stage Corn Population and Spacing Estimation. Final Report to Pioneer Hi-Bred International Inc and Institute for Physical Research and Technology (IPRT) Company Assistance. August 2005. 36 pp.

 

8.     Steward, B. L. Development and Use of Digital Elevation Models (DEMs) to Aid Vehicle Navigation and Control.  Final Report to John Deere Ag Management Solutions. February 2005. 46 pp.

 

9.     Steward, B. L., S. Birrell, D. S. Shrestha*, C. Van Wyngarden, E. Stephan, N. A. Krueger. Early Growth Stage Corn Plant Population Distribution Sensing Technology Development. Final Report to Pioneer Hi-Bred International Inc and Center for Applied Technology and Development. March 12, 2003. 26 pp.

 

10.  Steward, B. L., S. J. Birrell, T. C. Kaspar, D. S. Shrestha*. Stereo Machine Vision for In-situ Crop Growth Measurement. Final Report to ISU University Research Grants Program.  November 1, 2002. 9 pp.

 

11.  Steward, B. L., M. L. Westphalen*, and M. A. Miller*. Development and Evaluation of Multi-Mode Four-wheel Electrohydraulic Steering System on a Sprayer Vehicle. Final Report to John Deere Des Moines Works – Sprayer Products. July 2002. 20 pp.

 

Software Manuals

 

1.     A. Kelkar, B. L. Steward, Z. Kemp, K. Kappagantula, M. Karkee. Development of VR-based Prototyping Architecture for Real-time Control of Machines in Virtual Environment with Operator-Interface. Software Manual to Deere and Company.  June 2008. 111 pp.

 

Book Chapters

 

1.     Karkee, M., B. L. Steward, and J. P. Kruckeberg. In Preparation. Automation of Chemical Application Systems. In Agricultural Automation: Fundamentals and Practices. CRC Press: Boca Raton, Florida, USA.

Technical Society Periodical

 

1.     Christianson, L., A. Bhandari, and B. L. Steward. 2008. Embracing sustainable development as a profession. Resource 15(7): 21-23.

 

Invited Presentations

 

International

 

1.     Steward, B. L. 2012. Modelling and Simulation for Process Automation. Presentation as invited visiting professor at Laboratório de Controle, Departmento de Engenharia Elétrica, Eschola Engenharia São Carlos, University of São Paulo, São Carlos, SP, Brazil, March 13.

 

2.     Steward, B. L. 2012. Automation of Chemical Application Systems: Past, Present, Future. Invited Presentation at Embrapa Instrumentação, São Carlos, SP, Brazil, March 15.

 

3.     Steward, B. L. 2012. Controls for Agricultural Automation: Emerging Role of Modeling and Simulation. Presentation as invited visiting professor at Laboratório de Controle, Departmento de Engenharia Elétrica, Eschola Engenharia São Carlos, University of São Paulo, São Carlos, SP, Brazil, March 19.

 

4.     Steward, B. L. 2012. Main Tools and Concepts in Agricultural Automation. Presentation as invited visiting professor at Laboratório de Controle, Departmento de Engenharia Elétrica, Eschola Engenharia São Carlos, University of São Paulo, São Carlos, SP, Brazil, March 20.

 

5.     Steward, B. L. 2011. Iowa State University and the Agricultural and Biosystems Engineering Department. Invited Presentation at International Workshop – Networking among International Universities  and Opportunities to Collaborating Researchers on Joint Projects, Federal University of Viçosa, Viçosa, MG, Brazil, November 8.

 

6.     Steward, B. L. 2011. Modeling, Controls, and Simulation for Agricultural Automation. Invited Presentation at Beijing Kingpeng International Hi-Tech Corporation of Beijing Agricultural Machinery Institute, Beijing, PR China, September 16.

 

7.     Steward, B. L. 2011. Publishing in International Journals: 12 Keys to Success. Invited Presentation at Agricultural Mechanization Policy Research Group, College of Engineering. China Agricultural University, Beijing, PR China, September 17.

 

8.     Steward, B. L. 2011. Controls for Agricultural Automation: Emerging Role of Modeling and Simulation. Invited Presentation at College of Engineering. China Agricultural University, Beijing, PR China, September 19.

 

9.     Steward, B. L. 2011. The Development of Controls into Precision Agriculture and Agricultural Automation and Agricultural Mechanization in the USA. Invited Presentation at the Chinese Academy of Agricultural Mechanizations Sciences (CAAMS), Beijing, PR China, September 20.

 

10.  Steward, B. L. 2011. The Development of Controls into Precision Agriculture and Agricultural Automation and Agricultural Mechanization in the USA. Invited Presentation at the China Agricultural Machinery Testing Center (CAMTC), Beijing, PR China, September 21.

 

11.  Steward, B. L. 2011. Agricultural Mechanization in the USA and the Role of Agricultural Engineering at Iowa State University. Invited Presentation at College of Engineering. China Agricultural University, Beijing, PR China, September 21.

 

12.  Steward, B. L. 2011. The Development of Controls into Precision Agriculture and Agricultural Automation and Agricultural Mechanization in the USA. Invited Presentation at Tianjin Agricultural Machinery Extension Center, Tianjin, PR China, September 22.

 

13.  Steward, B. L. 2011. Precision Agriculture and Agricultural Automation in the USA. Invited Presentation at National Key Laboratory of Modern Precision Agriculture System Integration Research, China Agricultural University, Beijing, PR China, September 23.

 

14.  Stombaugh, T., R. Gates. S. Workman. B. L. Steward, and G. Ferraz. 2010. Lessons Learned From Seven Years Of An International Exchange Program. Invited Panel Discussion at International Symposium Training Engineers Across The Americas To Solve Global, Vitória, Espirito Santo, Brasil, July 26.

     

15.  Steward, B. L. 2010. Modeling and Controls for Agricultural Automation. Invited Presentation at Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil, sponsored by Brazilian Fulbright Commission, June 29.

 

16.  Steward, B. L. 2010. Publishing in International Journals: 12 Keys to Success. Invited Presentation at Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil, sponsored by Brazilian Fulbright Commission, June 17.

 

17.  Steward, B. L. 2010. Modeling and Controls for Agricultural Automation. Invited Presentation at Universidade Federal de Viçosa, Departamento de Engenharia Agrícola, Departmental Seminar. June 1.

 

18.  Steward, B. L. 2010. Publishing in International Journals: 12 Keys to Success. Invited Presentation at Universidade Federal de Viçosa, Departamento de Engenharia Agrícola, Departmental Seminar. June 17.

 

19.  Steward, B. L. 2010. Modeling and Simulation Technology for Agricultural Automation. Invited Presentation at Universidade Federal de Campina Grande, Campina Grande, Paraiba, Brazil, sponsored by Brazilian Fulbright Commission April 27.

 

20.  Steward, B. L. 2010. Automação nas Máquinas Agrícolas: Para Projetando um Mundo Sustentável. Invited Presentation at Universidade Federal de Viçosa, Departamento Engenharia Agrícola, VIII Semana Acadêmica, March 18.

 

21.  Steward, B. L. 2010. Advances in Modeling and Simulation Technology for Agricultural Machine Automation. Invited Presentation at Universidade Federal de Grande Dourados, Dourados, Mato Grasso do Sul, Brazil, sponsored by Brazilian Fulbright Commission, March 2.

 

22.  Steward, B. L. 2009. Advanced Machinery Engineering and Manufacturing Systems Focus in Agricultural and Biosystems Engineering. Invited Presentation at Nanjing Forestry University, Nanjing, PR China, September 10.

 

23.  Steward, B. L. 2009. Virtual Prototyping and Real-Time Simulation for Automatic Guidance.  Invited Presentation at Nanjing Forestry University, Nanjing, PR China, September 10.

 

24.  Steward, B. L. 2007. Biorenewables Production:  A New Need for Precision Agriculture Technologies.  Invited Presentation at China Agricultural University, Beijing, PR China, June 4.

 

25.  Steward, B. L. 2007. Precision Agriculture Technologies for Biorenewables Production. Invited Presentation at Zhejiang University, Hangzhou, PR China, June 11.

 

26.  Steward, B. L. 2006. Mechatronics Research Lab. Invited Presentation at Dept of Agricultural Engineering, Federal University of Vicosa, Viscosa, Brazil, 14 March.

 

27.  Steward, B. L. 2006. RESASI Model Overview. Invited Presentation at Dept of Agricultural Engineering, Federal University of Vicosa, Viscosa, Brazil, 10 March.

 

28.  Steward, B. L. 2004. Information Technology in Agriculture: Sensing in 2+n Dimensions. Invited Presentation at Sub-department of Agricultural Engineering and Physics, Agrotechnology  and Food Sciences Group, Wageningen University, Wageningen, Netherlands, 14 June.

 

29.  Steward, B. L. 2004. AgriBioSensing in Two + n Dimensions. Invited Presentation at Dept of Agricultural Sciences, Environment, Resources, and Technology Section (Agrotechnology), The Royal Veterinary and Agricultural University (KVL), Taastrup, Denmark, 7 June.

 

30.  Steward, B. L. 2004. Precision Agriculture and Mechatronics: Information Technology in
Agriculture and Agricultural Equipment. Invited Presentation at Dept of Agricultural Engineering, Federal University of Vicosa, Viscosa, Brazil, 19 March.

 

31.  Steward, B. L. 2002. Sensing and control for precision agriculture. Invited Presentation at Embrapa Corn and Sorgum Research Station, Sete Lagoas, Brazil, 19 March.

 

32.  Steward, B. L. 2002. Sensing and control for precision agriculture. Invited Presentation at Federal University of Vicosa, Viscosa, Brazil, 18 March.

Others

 

33.  Steward, B. L. 2011. Brazil. Invited Presentation at ISU Alpha Epsilon Initiation Banquet, Ames, IA, 26 April.

 

34.  Steward, B. L. and S. L. Nielsen. 2010. Enhancing Realism and Flexibility of VR-Based Real-time Dynamic Simulation Framework with Operator and Hardware in-the-loop Interface. John Deere Enterprise Electronics Conference. Waterloo, Iowa. September 28.

 

35.  Steward, B. L. and W. Meier. 2008. Lessons Learned from the Sustainable Development Course at Iowa State.  Engineers for a Sustainable World National Conference, San Francisco, Calif. 8 February.

 

36.  Steward, B.L. 2007. Sustainable Engineering and International Development Course at Iowa State University. Sustainability Educators Roundtable.  Drake University. 14 August.

 

37.  Steward, B.L. 2006. Developing a Sustainability Mind-set in Engineering Students. Engineers for a Sustainable World National Conference, Iowa City, Iowa, 28-30 Sept.

 

38.  Steward, B.L. 2006. ISU- ESW Projects: Brazil:  Modeling a Renewable Energy System to Meet University Energy Needs and Promote Regional Sustainable Development, Engineers for a Sustainable World National Conference, Iowa City, Iowa, 28-30 Sept.

 

39.  Steward, B. L. 2003. Precision Agriculture: Could Information Technology in Agriculture Lead to Greater Sustainability? Invited Presentation to ISU SUS AG 610, Society and Technology in Sustainable Food Systems, Ames, IA, 20 Feb.

 

40.  Determan, A., R. Freeman, M. Niesen, Steward, B. L. 2003. Beyond the B. S. to what degree are you willing to go?  Panel Discussion sponsored by ISU Engineering Graduate Programs, Ames, IA, 27 Jan.

 

41.  Mickelson, S. K., B. L. Steward, A. Meyer, A. Willey. 2002. Student development and the curriculum improvement process. Panel Discussion for the ISU College of Engineering Internship Employer Advisory Board, Ames, IA, 23 Sept.

 

42.  Steward, B. L., M. L. Westphalen, and M. A. Miller. 2002.  Impact of four wheel steering on sprayer vehicle performance.  Invited Presentation at John Deere Des Moines Works Engineering Luncheon, Ankeny, IA, 17 May.

 

43.  Steward, B. L., M. L. Westphalen, and M. A. Miller. 2002.  Impact of a multi-mode four wheel EH steering system on sprayer vehicle performance.  Invited Presentation at 17th Annual Agricultural Machinery Conference, Cedar Rapids, IA, 6-8 May.

 

44.  Steward, B. L. 2000. China – The Middle Kingdom. Invited Presentation at ISU Alpha Epsilon Initiation Banquet, Ames, IA, 25 April.

 

Thesis and Dissertation

 

1.     Steward, B.L. 1999. Sensing and control for real-time machine vision selective herbicide application under outdoor field conditions.  Ph.D Dissertation, Agricultural Engineering Department, University of Illinois, Urbana-Champaign, IL. 61801.  171 pages.

 

2.     Steward, B.L. 1994. Modeling and simulation of a chemical injection system. M.S. Thesis, Electrical Engineering Department, South Dakota State University, Brookings, SD. 57007. 163 pages.