Abstract: A near-infrared light emitting device can include semiconductor nanocrystals that emit at wavelengths beyond 1 ?m. The semiconductor nanocrystals can include a core and an overcoating on a surface of the core.

Abstract: A fleet management system includes a connected lawn mower including a prime mover, a mower blade, and a processing circuit including a processor and memory. The processing circuit receives a cost input indicating an amount of money to complete a job, receives an on-site time for the job, receives operational data from the connected lawn mower, including a prime mover runtime, calculates an efficiency value for the connected lawn mower based on the prime mover runtime and the on-site time, calculates a profitability value for the job based on at least the cost input and the on-site time, generates an efficiency report and profitability report for the connected unit based on the calculated efficiency and profitability values, and transmits the efficiency report and the profitability report to a computing system.