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2008
Upchurch, B., and R.L. Korthals. 2008. Motor Speed Sensing with PIC Microcontroller. Annual ASEE IL/IN Sections conference Student Abstract http://www.rose-hulman.edu/aseeilin2008/SaturdayStudentPaperSessions.pdf
2003
Bates, R.O., D.B. Edwards, and R.L. Korthals. 2003. Sow performance when housed either in groups with electronic sow feeders or stalls. Livestock Prod.' Sci. 79:29-35
Korthals, R.L. 2003. Tactical Animal Management, improving care with electronic measurements and real-time data analysis. Resource 10(7):9-10.
Korthals, R.L. 2003. Pig performance comparing a production system using large static groups formed during lactation to a production system using sized and resorted groups in nursery and finisher. J Swine Health and Production. 11(1):19-24
2002
Korthals, R.L. 2002. Evaluation and management of feeding systems for newly weaned pigs using statistical process control. ASAE paper 02-4046, ASAE, St. Joseph, MI 49085-9659 .
2001
Korthals , R.L. 2001. Comparison of electronic sow feeding and crated management of sows with different genetics. Proceedings International Livestock Environment Symposium VI 211-218.
Korthals , R.L. 2001. Monitoring growth and statistical variation of grow-finish swine. Proceedings International Livestock Environment Symposium VI. 64-71.
Korthals , R.L. 2001. Understanding filters for FIRE® performance testing. Osborne Demonstration Farm Technical Note. Project 10091.
2000
Edwards, D.B., R.O. Bates, and R.L. Korthals. 2000. Sow performance using electronic sow feeding versus conventional feeding systems. J. Anim. Sci vol. 78, Suppl. 2, p.15, Abstract #58.
Korthals, R.L. 2000. Evaluation of space requirements for swine finishing feeders. Trans. ASAE. 42(3):395-398.
Korthals, R.L. 2000. S100 Big Wheel® sow feeder test. Osborne Demonstration Farm Technical Note. Experiment 1999–1.
Korthals, R.L. 2000. Wean-to-finish feeding with Big Wheel® feeders. Osborne Demonstration Farm Technical Note. Project 10083.
Korthals, R.L. 2000. Weighing and optimization of swine marketing. ASAE paper 00-4013, ASAE, St. Joseph, MI 49085-9659 .
1999
Korthals, R.L.1999. Using FIRE® to improve feed rations. Osborne Demonstration Farm Technical Note Project 10091 and Biotronix Times, Osborne Industries, Inc., Osborne , KS 67473 .
Korthals, R.L. 1999. Feeder capacity for wean to finish swine. Osborne Demonstration Farm Technical Note. Project 10082.
Korthals, R.L. 1999. The effectiveness of using electronic identification for the identification of estrus in swine. ASAE paper 99-4213, ASAE, St. Joseph, MI 49085-9659 .
Korthals, R.L. 1999. A review of open housed farrowing and experiences with electronic farrowing. ASAE paper 99-4102, ASAE, St. Joseph , MI 49085-9659 .
1998
Korthals, R.L. 1998. Comparison of FIRE® feeders with conventional feeders for growing-finishing swine. ASAE paper 98-4079, ASAE, St. Joseph, MI 49085-9659 .
Korthals, R.L. 1998. Modeling the drinking behavior of swine. ASAE paper 98-4078, ASAE, St. Joseph , MI 49085-9659 .
Korthals, R.L. 1998. Using sentinel pens with performance testing equipment as a tactical management tool. J. Anim. Sci vol. 76, Suppl. 1 / J. Dairy Sci vol. 81 Suppl. 1, p.98, abstract #378.
Korthals, R.L. 1998. Utilizing software engineering to improve software process capabilities within the Biological Engineering Research Unit. Computers and Electronics in Agric. 19:265-275.
Korthals , R.L. and R.O. Bates. 1998. A comparison of electronic management methods with conventional methods for managing sows. J. Anim. Sci vol. 76, Suppl. 1 / J. Dairy Sci vol. 81 Suppl. 1, p.63, abstract #247.
Eigenberg , R.A., R.L. Korthals , and J.A. Nienaber. 1998. Geophysical electromagnetic survey methods applied to agricultural waste sites. J. Environ. Quality 27:215-219.
Eigenberg, R.A., R.L. Korthals, J.A. Nienaber, G.L. Hahn. 1998. Implementation of a mass balance approach to predicting nutrient fate of manure from beef cattle feedlots. Applied Engineering in Agric. 14(5):475-484.
1997
Korthals, R.L. 1997. Accuracy and precision of the FIRE® performance testing feeder. Osborne Industries Technical Note.
Korthals , R.L., G.L. Hahn, R.A. Eigenberg, and J.A. Nienaber. 1997. Swine feeding behavior and body temperature responses to an extended stepped temperature increase. Proceedings International Livestock Environment Symposium V, Vol II, 781-788.
T.J. Safranski, D.L. Harris, J.A. Nienaber, G.L. Hahn, and R.L. Korthals. 1997. Heat stress and limit feeding pigs: Effects on growth and composition. Proceedings International Livestock Environment Symposium V, Vol II, 772-780.
Nienaber , J.A., G.L. Hahn, R.A. Eigenberg, R.L. Korthals, J.T. Yen, and D.L. Harris. 1997. Genetic and heat stress interaction effects on finishing swine. Proceedings International Livestock Environment Symposium V, Vol II, 1017-1023.
Korthals , R.L., Y.R. Chen, G.L. Hahn and R.A. Eigenberg. 1997. Calculation of fractal dimension from cattle thermoregulatory responses. J. Therm. Biol. 22(4/5) 285-293.
1996
Alessi, R.S., C.R. Amerman, B.A. Andres, R. Korthals, S. Schneider, M. Shannon, E.R. Widmann, J. Worl, and W.B. Voorhees. 1996. Organizational assessment for improving technical outcomes. Agronomy Abstracts A08-082. (Abstract)
Eigenberg , R.A., R.L. Korthals , and J.A. Nienaber. 1996. Geophysical electromagnetic survey methods applied to agricultural waste sites. ASAE paper 96-3014, ASAE, St. Joseph, MI 49085-9659.
Nienaber , J.A., G.L. Hahn, T.P. McDonald, and R.L. Korthals. 1995. Feeding patterns and swine performance in hot environments. Trans. of ASAE 39(1):195-202
Korthals, R.L. 1996. Characterizing stress: Interpreting and modeling dynamic responses. (Invited presentation for workshop)
1995
Eigenberg , R.A., R.L. Korthals , J.A. Nienaber and G.L. Hahn. 1995. Implementation of a mass balance approach to predicting nutrient fate of manure from beef cattle feedlots. ASAE paper 95-3555, ASAE, St. Joseph, MI 49085-9659 .
Eigenberg , R.A., R.L. Korthals , J.A. Nienaber and G.L. Hahn. 1995. Mass balance approach to predicting nutrient fate of manure from beef cattle feedlots. Farm Animal Computer Technology conference. : 88-97.
Korthals, R.L. 1995. Applying systems engineering practices on a small-scale: Using software engineering to support a data acquisition system upgrade. (Invited presentation ASA workshop)
Korthals, R.L. 1995. An introduction to the software engineering workshop: why should I attend? Farm Animal Computer Technology conference. : 236-241.
Korthals, R.L. 1995. Utilizing software engineering to improve software process capabilities within the Biological Engineering Research Unit. Proceedings of Software Engineering Workshop (presented in conjunction with Farm Animal Computer Technology conference.): 29-37
Korthals , R.L. and R.A. Eigenberg. 1995. Experiences in upgrading a data acquisition system for animal research. ASAE paper 95-, ASAE, St. Joseph, MI 49085-9659 .
Korthals , R.L., R.A. Eigenberg, G.L. Hahn, and J.A. Nienaber. 1995. Measurement and spectral analysis of tympanic temperature regulation in swine. Trans. of ASAE. 38(3):905-909.
Korthals , R.L., S.L. Knight, R.R. Crawford and L.L. Christianson. 1995. Development and testing of a simple carbon dioxide enrichment controller for growth chambers. Trans. of ASAE. 38(1), 207-211.
1994
Hahn, G.L., R.A. Eigenberg, R.L. Korthals, Y.R. Chen, A.M. Parkhurst, and J.A. Nienaber. 1994. Characterizing animal stress through thermoregulatory response analysis. ASAE Paper 94-4012. ASAE, St. Joseph , MI 49085 .
Korthals , R.L., G.L. Hahn and R.A. Eigenberg. 1994. Calculation of fractal dimension from noisy tympanic temperature data. ASAE paper 94-4525, ASAE, St. Joseph, MI 49085-9659 .
Korthals , R.L. S.L. Knight, L.L. Christianson, and L. A. Spomer. 1994. Chambers for studying the effects of airflow velocity on plant growth. Biotronics 23:113-119.
Korthals , R.L., R.A. Eigenberg, G.L. Hahn, and J.A. Nienaber. 1994. Modeling dynamic thermoregulatory responses in swine. Conference on Computers in Agric.:220-225. ASAE, St. Joseph, MI 49085.
Korthals , R.L., G.L. Hahn, and J.A. Nienaber. 1994. Evaluation of neural networks as a tool for management of swine environments. Trans. of ASAE 37(4):1295 B1299.
Schulte, D.D., R.A. Eigenberg, M.R. Peterson, J.A. Nienaber and R.L. Korthals. 1994. Evaluation of waste management decision making tools. Proc. Great Plains Animal Waste Conference on Confined Animal Production and Water Quality, GPAC Publication #151:154-160.
Korthals , R.L., R.A. Eigenberg, J.A. Nienaber, and G.L. Hahn. 1994. Modeling swine responses to stepped temperature changes. ASAE paper 94-4010, ASAE, St. Joseph , MI 49085-9659 .
Nienaber , J.A., G.L. Hahn, and R.L. Korthals. 1993. Upper threshold temperature limiting swine growth. Proc. 13th Congress of Biometerology : 2(2):401-408
1993
Korthals , R.L., G.L. Hahn, and J.A. Nienaber. 1993. Evaluation of neural networks as a tool for management of swine environments. Proc. 4th Int'l. Lvstk. Environ. Symp. :69-75. ASAE, St. Joseph, MI 49085.
Nienaber , J.A., G.L. Hahn, and R.L. Korthals. 1993. Upper threshold temperature limiting swine growth. Proc. (Part 1), 13th Congress of Biometerology :69. (abstract)
Nienaber , J.A., G.L. Hahn, R.L. Korthals , and T.P. McDonald. 1993. Eating behavior of swine as influenced by environmental temperature. Proc. 4th Int'l. Lvstk. Environ. Symp. :937-944. ASAE, St. Joseph, MI 49085.
Pordisemo , L.O., D.L. Harris, J.A. Nienaber, G.L. Hahn, and R.L. Korthals . 1993. Integrating housing and environmental effects in the simulation of port production. Proc. 4th Int'l. Lvstk. Environ. Symp. :945-956. ASAE, St. Joseph, MI 49085.
1992
Korthals , R.L., G.L. Hahn, J.A. Nienaber, T.P. McDonald, and R.A. Eigenberg. 1992. Experiences with transponders for monitoring bioenergetic responses. ASAE paper 923010, ASAE, St. Joseph, MI 49085-9659 .
1991
Korthals, R.L. 1991. Airflow Direction and Velocity Effects on Soybean, Wheat, and Chrysanthemum. PhD Thesis, Univ. of IL at Urbana-Champaign.
1990
Korthals , R.L., L.L. Christianson, and S.L. Knight. 1990. Evaluation of growth chamber environments. ASAE paper 90-4034, ASAE, St. Joseph, MI 49085.
1989
Knight, S.L., R.L. Korthals, and R.K.D. Cowen. 1989. Variation in development of Zinnia Elegans growth in baseline photoperiod regimes. Presented at ASHS Annual meeting, abstract #320.
Korthals , R.L., L.L. Christianson, and S.L. Knight. 1989. Greenhouse modeling for environment control. ASAE paper 89-4014, ASAE, St. Joseph, MI 49085.
1988
Helmick, K., L.L. Christianson, B. Hughes, G.L. Riskowski, and R. Korthals. 1988. Fan and ventilation equipment testing. Non-Destructive Testing and Evaluation Conference, Univ. of IL., Urbana, IL.
Hughes, W.C., L.L. Christianson, K. Helmick, R. Korthals , and C. Gates. 1988. Fan performance as affected by partial obstructions. ASAE paper 88-4546, ASAE, St. Joseph, MI 49085.
Korthals , R.L., L.L. Christianson, and A.J. Muehling. 1988. Assessing and improving environmental conditions in commercial swine facilities. Proc. 3rd Intl. Lvstk. Environ. Symp. :454-461. ASAE, St. Joseph, MI 49085.
1987
Korthals , R.L., L.L. Christianson, A.J. Muehling, S.E. Curtis, D.P. Bane, and W.F. Hall. 1987. Trouble-shooting livestock environment control and equipment problems. ASAE paper 87-4037, ASAE, St. Joseph , MI 49085 .
Korthals, R.L. 1987. Trouble-Shooting Swine Confinement Facilities, MS Thesis, Univ. of IL, Urbana IL.