Abstract: A lubricant composition is prepared having a base oil composition and an additive composition comprising a molybdenum dialkyldithiocarbamate and an organic friction modifier such as an oil-soluble mono-, di- or tri-glyceride of at least one hydroxyl polycarboxylic acid, or a derivative thereof may, especially when used in combination with a base oil composition of a functionally modified poly-alpha-olefin (e.g. alpha-olefin and ester copolymer), a poly-alpha-olefin and optionally an additive carrier such as an alkylated naphthalene. The lubricant composition of the present invention finds particular application as a lubricant composition for robotics and robotic gearboxes, industrial gears and wind turbine gears and especially for gearboxes having a rolling element (such as a spherical bearing or a cylindrical bearing). It provides enhanced longevity, good elastomer compatibility and good anti-wear properties. Embodiments of the invention also demonstrate excellent protection against leaks and sludge.

Abstract: A method and system for maintaining a density-based geocode tree for a geographic area, including obtaining a geocode tree including multiple leaf nodes each having a geohash value corresponding to a subdivision of the geographic area, obtaining multiple positions within the geographic area, generating, using the multiple positions, multiple geohashes, mapping a first subset of the multiple geohashes to a first leaf node of the multiple leaf nodes based on the geohash value of the first leaf node, incrementing, by a cardinality of the first subset, a first counter value for the first leaf node, and grafting, in response to the first counter value exceeding a first density threshold, at least one child node onto the first leaf node.

Abstract: A method and system for maintaining a density-based geocode tree for a geographic area, including obtaining a geocode tree including multiple leaf nodes each having a geohash value corresponding to a subdivision of the geographic area, obtaining multiple positions within the geographic area, generating, using the multiple positions, multiple geohashes, mapping a first subset of the multiple geohashes to a first leaf node of the multiple leaf nodes based on the geohash value of the first leaf node, incrementing, by a cardinality of the first subset, a first counter value for the first leaf node, and grafting, in response to the first counter value exceeding a first density threshold, at least one child node onto the first leaf node.