Danny Mann

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Professor Danny Mann grew up in western Manitoba where he attended school in Roblin and was introduced to the profession of agriculture on the family farm. Danny received a B.Sc. degree in Agricultural Engineering (University of Manitoba, 1992), an M.Sc. degree in Biosystems Engineering (University of Manitoba, 1995), and a Ph.D. in Biosystems Engineering (University of Manitoba, 1998). Danny joined the Department of Biosystems Engineering in 1998 as an Assistant Professor, was promoted to the rank of Associate Professor in 2004, and was promoted to the rank of Professor in 2008. Administrative appointments include two years as an Associate Head (2006-2008), one year as Acting Head (2008-2009), and Head since 2009. Danny is a registered Professional Engineer with the Engineers Geoscientists Manitoba. Within the University community, Danny is a Member of the Centre for Engineering Professional Practice and Engineering Education.
Danny has research expertise in agricultural ergonomics, agricultural safety, and assistive technologies. His research bridges the disciplines of agricultural engineering and ergonomics. Danny has been a member of the Canadian Society for Bioengineering (CSBESCGAB) since 1998 and is currently serving as President. In 2006, Danny was the recipient of the CSBE/SCGAB Young Engineer of the Year Award and in 2011 was the recipient of the CSBE/SCGAB Glen Downing Award in recognition of outstanding work in the area of power and machinery.

Biosystems Engineering
Machinery Systems
semi-autonomous agricultural vehicles; agricultural ergonomics; agricultural safety; assistive technologies
There are currently no positions open.

REMOTE SUPERVISION OF AUTONOMOUS AGRICULTURAL MACHINES
The concept of the driverless tractor has appeared in the scientific literature over the past couple of decades. If designed appropriately, autonomous agricultural machines (AAMs) should be able to reduce the demand on the farm worker possibly enabling one farm worker to remotely supervise multiple machines from a central location. The ultimate productivity of such a human-machine system will depend on the ability of the farmer to efficiently and effectively obtain information from each of the AAMs through an interface. Great importance must be placed on the design of the interface so that human interaction with the AAM can be optimized. My research is founded on the assumption that it will be desirable for the farm manager to have an active supervisory role with future AAMs. This assumption implies that the supervisor will be required to obtain real-time information from the AAM, and that such information will be used to make critical control decisions. Historically, the human operator of an agricultural machine has been able to obtain real-time sensory information (visual and auditory) directly from the machine and the surrounding environment. It is hypothesized that such sensory information may also be valued by the individual tasked with remote supervision of an AAM.

Students under my supervision are currently working on projects in the following areas:
➢ Determination of sensory requirements for remote supervision of autonomous agricultural machines
➢ Measurement of latency during transmission of real-time video for remote supervision of agricultural machines
➢ Display design for semi-autonomous agricultural machines

Panfilov, I. and D.D. Mann. 2018. The importance of real-time visual information for the remote supervision of an autonomous agricultural machine. Canadian Biosystems Engineering 60:2.11-2.18. ( https://doi.org/10.7451/CBE.2018.60.2.11 )
Berthelette, M., D.D. Mann, J. Ripat and C.M. Glazebrook. 2018. Assessing manual wheelchair caster design for mobility in winter conditions. Assistive Technology. https://doi.org/10.1080/10400435.2018.1464080
Rakhra, A.K. and D.D. Mann. 2018. Design and evaluation of the individual elements of the interface for an agricultural machine: Impact on the situation awareness and mental workload of the operator. Journal of Agricultural Safety & Health 24(1):27-42. ( https://doi.org/10.13031/jash.12410 )
Mann, D.D., A. Hesketh and J.B. Morrison. 2016. Comparison of forward-facing and backward-facing tractor egress. Canadian Biosystems Engineering 58:2.1-2.8. http://dx.doi.org/10.7451/CBE.2016.58.2.1
Grant, T.M., K.D. Stockwell, J.B. Morrison and D.D. Mann. 2015. Effect of pressure, volume, and density on the jet dispersion of needle-free injection devices. Biosystems Engineering. http://dx.doi.org/10.1016/j.biosystemseng.2015.04.010
Bashiri, B. and D.D. Mann. 2015. Impact of automation on drivers’ performance in agricultural semi-autonomous vehicles. Journal of Agricultural Safety & Health 21(2):129-139. (doi: 10.13031/jash.21.10977)
Bashiri, B. and D.D. Mann. 2014. Heart rate variability in response to task automation in agricultural semi-autonomous vehicles. The Ergonomics Open Journal 7:6-12.
Bashiri, B. and D.D. Mann. 2014. Automation and the situation awareness of drivers in agricultural semi-autonomous vehicles. Biosystems Engineering 124:8-15.
Rakhra, A. and D.D. Mann. 2013. Evaluation of implement monitoring systems. Journal of Agricultural Safety & Health 19(1):51-67.
Karimi, D., J. Henry and D.D. Mann. 2012. Effect of using GPS autosteer guidance systems on the eye-glance behavior and posture of tractor operators. Journal of Agricultural Safety & Health 18(4): 309-318.
Huang, Q., Q. Zhang, N. Cicek and D. Mann. 2011. Biofilter: a promising tool for mitigating methane emission from manure storage. Journal of Arid Land 3(1): 61-70.
Karimi, D., D.D. Mann and J. Yan. 2011. A comparison of textual, symbolic, and pictorial presentation of information on an air-seeder display. Australian Journal of Agricultural Engineering 2(4):90-95.
Dey, A.K. and D.D. Mann. 2011. Mental workload associated with operating an agricultural sprayer: an empirical approach. Journal of Agricultural Safety & Health 17(2):91-110.
Ima, C.S. and D.D. Mann. 2011. Lateral pressure variation in a model biofilter bin due to wetting and drying cycles. Canadian Biosystems Engineering 53:6.1-6.7.
Ima, C.S. and D.D. Mann. 2011. Hygroscopic expansion of woodchips. Australian Journal of Agricultural Engineering 2(1):5-7.
Xu, J., A. Kroeker and D.D. Mann. 2010. Factors contributing to entanglement around a pto shaft rotating at high speed. Canadian Biosystems Engineering 52:2.17-2.21.
Dey, A.K. and D.D. Mann. 2010. Sensitivity and diagnosticity of NASA-TLX and simplified SWAT to assess the mental workload associated with operating an agricultural sprayer. Ergonomics 53(7):848-857.
Kroeker, A.M. and D.D. Mann. 2010. Motorist comprehension of the slow-moving vehicle emblem in Manitoba. Journal of Agricultural Safety and Health 16(2):111-125.
Mahmood, K., D.D. Mann, Q. Zhang and A. Brule-Babel. 2009. A perpetual harvest greenhouse system: integrating barn, biofilter and greenhouse. Agricultural Engineering International: The CIGR EJournal. Vol. XI.
Kahimba, F.C., R. Sri Ranjan, and D. D. Mann. 2009. Modeling soil temperature, frost depth and soil moisture redistribution in seasonally frozen agricultural soils. Applied Engineering in Agriculture 25(6): 871-882.
Karimi, D. and D.D. Mann. 2009. Predictor displays to improve the operator performance for agricultural guidance-aid systems. Applied Engineering in Agriculture 25(5): 789-793.
Dey, A. K., and D. D. Mann. 2009. A complete task analysis to measure the workload associated with operating an agricultural sprayer equipped with a navigation device. Applied Ergonomics 41:146-149.
Dey, A.K. and D.D. Mann. 2009. Evaluation of mental workload associated with operating an agricultural sprayer in response to three different GPS navigation aids. Applied Engineering in Agriculture 25(4): 467-474.
Karimi, D. and D.D. Mann. 2008. Role of motion cues in straight line driving of an agricultural vehicle. Biosystems Engineering 101(3):283-292.
Karimi, D. and D.D. Mann. 2008. Role of visual cues in driving an agricultural vehicle. The Ergonomics Open Journal 1:54-61.
Karimi, D. and D.D. Mann. 2008. Torque feedback on the steering wheel of agricultural vehicles. Computers and Electronics in Agriculture 65:77-84.
Kelso, S.A., A.M. Stangherlin and D.D. Mann. 2008. Evaluation of mechanical tractor pedal extensions. Journal of Agricultural Safety and Health 14(4):441-459.
Karimi, D., D.D. Mann and R. Ehsani. 2008. Modeling of straight-line driving with a guidance aid for a tractor-driving simulator. Applied Engineering in Agriculture 24(4):403-408.
Drakopoulos, D. and D.D. Mann. 2008. A mathematical equation for quantifying control functionality in agricultural tractors. Journal of Agricultural Safety and Health 14(4):377-389.
Ima, C.S. and D.D. Mann. 2008. Wall pressures caused by wet woodchips in a model biofilter bin. Agricultural Engineering International: The CIGR Ejournal. Vol. X.
Karimi, D., T. Mondor and D.D. Mann. 2008. Application of auditory signals to the operation of an agricultural vehicle. Journal of Agricultural Safety and Health 14(1):71-78.
Mann, D.D., K.N. Wilson and C.S. Ima. 2008. Evaluation of airflow through a horizontal-airflow biofilter with a non-pressurized headspace. Canadian Biosystems Engineering 50:6.1-6.5.
Ima, C.S. and D.D. Mann. 2007. Physical properties of woodchip:compost mixtures used as biofilter media. Agricultural Engineering International: The CIGR Ejournal. Vol. IX.
Mann, D.D., J. Ripat and A. Quanbury. 2007. Interprofessional teaching teams: Addressing emerging areas in biosystems engineering using a client-based learning project. International Journal of Engineering Education 23(4):691-697.
Mann, D.D., S. Ingram, K.J. Dick, D.S. Petkau and M.G. Britton. 2007. Re-thinking the placement of technical communication in the engineering curriculum. International Journal of Engineering Education 23(4):645-649.
Drakopoulos, D. and D.D. Mann. 2007. An ergonomic analysis of the controls present in a tractor workstation. Canadian Biosystems Engineering 49:2.15.2.21.
ElMekkawy, T.Y., P.A. Hachkowski, D. Strong and D.D. Mann. 2006. Defect analysis for quality and productivity improvements in a manufacturing system. Canadian Biosystems Engineering 48:7.9-7.12 (Technical Note).
Khazaei, J. and D.D. Mann. 2005. Effects of moisture content and number of loadings on force relaxation behaviour of chickpea kernels. Int. Agrophysics 19:305-313.
Garlinski, E.M. and D.D. Mann. 2005. Evaluation of airflow through a horizontal-airflow biofilter with a pressurized headspace. Canadian Biosystems Engineering 47:6.29-6.34.
Khazaei, J. and D.D. Mann. 2004. Effects of temperature and loading characteristics on mechanical and stress-relaxation properties of sea buckthorn berries. Part 1. Compression tests. Agricultural Engineering International: The CIGR Ejournal, Volume VI.
Khazaei, J. and D.D. Mann. 2004. Effects of temperature and loading characteristics on mechanical and stress-relaxation properties of sea buckthorn berries. Part 2. Puncture tests. Agricultural Engineering International: The CIGR Ejournal, Volume VI.
Khazaei, J. and D.D. Mann. 2004. Effects of temperature and loading characteristics on mechanical and stress-relaxation behavior of sea buckthorn berries. Part 3. Relaxation behavior. Agricultural Engineering International: The CIGR Ejournal, Volume VI.
Ima. C.S. and D.D. Mann. 2004. Ergonomic concerns with lightbar guidance displays. Journal of Agricultural Safety and Health 10(2):91-102.
Ima, C.S. and D.D. Mann. 2003. Lightbar design: the effect of light colour, lightbar size and auxiliary indicators on tracking and monitoring performance. Agricultural Engineering International: The CIGR Ejournal, Volume V.
Mann, D.D., D.S. Petkau and T.G. Crowe. 2003. Evaluation of a prototype sea buckthorn leaf harvester. Canadian Biosystems Engineering 45:2.9-2.15.
Tang, P. and D.D. Mann. 2003. Factors contributing to guidance performance when using a camera-based guidance aid. Journal of Agricultural Safety and Health 9(1): 47-60.
Ghassemzadeh, H.R. and D.D. Mann. 2003. A vision-aided tractor guidance simulator. Journal of Agricultural Science and Technology 5:1-9.
Sadaka, S., C.R. Magura and D.D. Mann. 2002. Vertical and horizontal airflow characteristics of wood/compost mixtures. Applied Engineering in Agriculture. 18(6): 735-741.
Mann, D.D., J.C. DeBruyn and Q. Zhang. 2002. Design and evaluation of an open biofilter for treatment of odour from swine barns during sub-zero ambient temperatures. Canadian Biosystems Engineering 44:6.21-6.26 (Technical Note).
Mann, D.D., D.S. Petkau, T.G. Crowe and W.R. Schroeder. 2001. Removal of sea buckthorn (Hippophae rhamnoides L.) berries by shaking. Canadian Biosystems Engineering 43:2.23-2.28.
DeBruyn, J.C., D.D. Mann and Q. Zhang. 2001. Comparison of the odour levels of biofiltered air and ambient farmyard air. Canadian Biosystems Engineering 43:6.7-6.11.
Mann, D.D., D.S. Jayas, N.D.G. White and W.E. Muir. 1999. Mortality of adult Cryptolestes ferrugineus (Stephens) exposed to changing CO2 concentrations. J. Stored Prod. Res. 35:385-395.
Mann, D.D., D.S. Jayas, W.E. Muir and N.D.G. White. 1999. Predicting the gas-tightness of grain storage structures. Can. Agric. Eng. 41:259-265.
Mann, D.D., D.S. Jayas, W.E. Muir and N.D.G. White. 1999. Efficient CO2 fumigation of wheat in welded-steel hopper bins. App. Eng. Agric. 15:57-63.
Mann, D.D., D.S. Jayas, N.D.G. White and W.E. Muir. 1997. Sealing of welded-steel hopper bins for fumigation of stored grain with carbon dioxide. Can. Agric. Eng. 39(2):91-97.
Mann, D.D., D.S. Jayas, N.D.G. White, W.E. Muir and M.S. Evans. 1997. A grain storage information system for Canadian farmers and grain storage managers. Can Agric. Eng. 39(1):49-56.
Jayas, D.S. and D.D. Mann. 1994. Presentation of airflow resistance data of seed bulks. App. Eng. Agric. 10(1):79-83.

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