Abstract: A grinding tool kit, apparatus and method for finish machining of a rolling surface of a bearing roller. The apparatus comprises a main machine, an external circulation system, a grinding tool kit and a grinding tool kit clamp. A configuration of the main machine comprise a grinding strip assembly rotary type and a grinding sleeve rotary type. The external circulation system comprises a collection unit (41), a sorting unit (42), a feeding unit (43) and a transmission subsystem. The grinding tool kit comprises a grinding sleeve (21) remaining coaxial during working, and a grinding strip assembly penetrating through the grinding sleeve (21), an inner surface of the grinding sleeve (21) is provided with a first spiral groove (211); and the grinding strip assembly comprises a plurality of grinding strips (22), front surfaces of which are provided with linear grooves (221) or second spiral grooves distributed in a circumferential columnar array.

Abstract: According to one aspect, an autonomous vehicle that includes a lidar unit collects lidar point cloud data that includes false returns or false positives, and characterizes the data associated with the false returns or false positives as drivable or not drivable. The false returns or false positives may be phantom points that are not associated with actual objects which may pose collision risks. Analyzing lidar point cloud data to characterize false returns or false positives as either drivable or not drivable enables an autonomous vehicle to operate efficiently by not having to avoid non-existent collision risks. False positives may be indicated when a wet or icy road surface acts as a mirror which reflects objects, and when precipitation such as raindrops appear as objects. Characterizing such false positives as drivable facilitates the efficient operation of an autonomous vehicle as the autonomous vehicle may drive over a mirror and/or through precipitation.

Abstract: According to one aspect, a vehicle includes a first compartment, a system, and a first sanitizing arrangement. The first compartment has a plurality of walls that define a space, and the system is configured to enable the vehicle to travel autonomously. The system includes a power system configured to provide power to the first compartment. The first sanitizing arrangement includes at least a first sanitizing component, the at least first sanitizing component being included in the first compartment, wherein the first sanitizing arrangement is configured to be activated to sanitize the plurality of walls and the space.

Abstract: Disclosed is a grinding disk kit for finishing rolling surfaces of bearing rollers, including a pair of coaxial first and second grinding disks; a front face of the first grinding disk includes a group of radially distributed linear grooves and transition faces for connecting the adjacent linear grooves; a front face of the second grinding disk includes one or more helical grooves and transition faces for connecting adjacent helical grooves; one bearing roller to be machined is distributed in each linear groove corresponding to each intersection of the helical grooves and the linear grooves during grinding machining; the rolling surfaces of the bearing rollers to be machined are respectively in contact with working faces of the linear grooves and the helical grooves corresponding to each intersection; and the bearing rollers to be machined translate along the linear grooves while rotating about the own axes under the friction.

Abstract: A multi-processor system with cache sharing has a plurality of processor sub-systems and a cache coherence interconnect circuit. The processor sub-systems have a first processor sub-system and a second processor sub-system. The first processor sub-system includes at least one first processor and a first cache coupled to the at least one first processor. The second processor sub-system includes at least one second processor and a second cache coupled to the at least one second processor. The cache coherence interconnect circuit is coupled to the processor sub-systems, and used to obtain a cache line data from an evicted cache line in the first cache, and transfer the obtained cache line data to the second cache for storage.