Abstract: Embodiments include methods executed by a processor of a robotic device for selecting a frontier goal for autonomous map building within a space, including determining trajectory costs for the robotic device traversing from an occupied area to each of a plurality of available frontier goals, wherein the plurality of available frontier goals include positions within the space from which the robotic device is configured to collect information to autonomously build a map of the space, determining co-visibility costs for each of the plurality of available frontier goals, determining a frontier cost for each of the plurality of available frontier goals based on a difference between the trajectory cost and the co-visibility cost of the respective available frontier goal; and selecting one of the plurality of available frontier goals having a lowest determined frontier cost.

Abstract: The invention relates to aqueous composition comprising water-soluble glycerin-based polyalkylene glycols as synthetic base oils as well as the use of the composition and the glycerin-based polyalkylene glycols as or in metalworking fluids, wherein the glycerin was consecutively alkoxylated in the following order: first with propylene oxide, followed by ethylene oxide and finally with propylene oxide.

Abstract: The disclosure provides a to-be-tested object extraction apparatus and a nucleic acid testing integrated machine with the to-be-tested object preparation apparatus.

Abstract: Provided is a sample analysis device, including: a housing, a reagent preparation apparatus, a sample processing apparatus, and an analysis apparatus. A first independent space, a second independent space and a third independent space are sequentially arranged in the housing at intervals. The reagent preparation apparatus is arranged in the first independent space. The sample processing apparatus is arranged in the second independent space, a first conveying channel is arranged between the reagent preparation apparatus and the sample processing apparatus, a first switching piece is arranged at the first conveying channel, and the first switching piece has a first opening state and a first closing state.