This is a survey on recent joint work with A.R. Gover on the geometry of non–degenerate CR manifolds of hypersurface type. Specifically we discuss the relation between standard tractors on one side and the canonical Cartan connection, the construction of the Fefferman space and the ambient metric construction on the other side. To put these results into perspective, some parts of the general th...

1. General aspects of software engineering in agricultural machines 2. Software applications in tractors – present overview 2.1.Basic control functions 2.2.Human Machine Interface 2.3.Automatic functions 2.4.Data Management 2.5.Service and Support 3. Economical requirements for software in agricultural machines 3.1.Challenges for software design 3.2.Strategies and principles for software design...

Fatalities associated with farm tractors are the most common cause of work-related death in the U.S. agricultural industry (1). To characterize farm-tractor-related fatalities in Kentucky, the Kentucky Fatality Assessment and Control Evaluation (KY FACE) Project studied all fatal farm injuries occurring among persons in that state during 1994, the initial year of operation for FACE in Kentucky....

Recent advances in Agricultural Engineering include image processing, robotics and geographic information systems (GIS). Some tasks are still accomplished manually, like drawing plantation lines that optimize productivity. Herewith we present an algorithm to find the optimal plantation lines in linear time. The algorithm is based upon classical results of Geometry which enabled a source code wi...

In order to improve the management efficiency of peach orchards, this paper considers cooperative operation scheme multiple unmanned tractors. According actual situation, constructs path planning model tractors in a standard orchard, designs objective function optimize total turning time and operating according tractor driving parameters, solves it by improving differential evolution algorithm....