Abstract: A method for segmenting and classifying a unit of land, comprising: receiving land information comprising image data; processing received land information using a segmentation model trained on training data comprising training image data; and determining segmentation and classification for the unit of land; wherein the training image data comprises image data from different time points; and wherein the training image data comprises at least some of the image data.

Abstract: The design of an air seal enclosure of the system and method of the present invention includes a combination of use of a multisurface silicone sealant between the bottom endbell and the air seal enclosure to provide a watertight joint that prevents water from entering the air seal enclosure. The air seal enclosure is formed from a suitable flexible material and is attached to a bottom endbell with bolts through holes in a periphery thereof. When tank liquid rises during flooding, the air seal enclosure provides a pocket of trapped air like a diving bell that prevents the tank liquid from ever reaching the bottom of the aerator.

Abstract: The water resistant aerator design of the present invention includes a combination of known waterproofing techniques with new techniques for wastewater aerators comprising: use of a threaded joint and thread sealing compound between the lifting handle and the top endbell to provide a watertight connection between the parts; use of a single lip seal for the top lip seal that has over 18 degrees of wear motion before pressure is lost; use of a grease seal between the top lip seal and the top bearing to impede moisture from entering the motor; use of a grease seal between the bottom lip seal and the bottom bearing to impede moisture from entering the motor; use of a multi-surface silicone sealant between the bottom endbell and the air seal enclosure to provide a watertight joint that prevents water from entering the air seal enclosure; and use of an O-ring seal between the endbells and the stator shell.

Abstract: A rotary ski slope comprising an inclined disc which is rotatable about an axis and has a diameter of at least 100 metres. The disc may be divided into a number of concentric rings (1) which are rotatable at different speeds. Means are preferably provided to circulate coolant across the entire under surface of the disc to prevent the snow from melting. The entire surface of the disc is preferably available for skiing with snow conditioning and grooming apparatus (49, 52) being mounted away from the surface, or selectively retractable from the surface. The upper surface of the disc may be non-planar to set up “wave” allowing a variety of skiing conditions to be provided.