Abstract: A logical segmentation data processing system includes a data retrieval interface configured to receive, from a remote geo-caching data system, geo-caching data representing geographic locations specified by the remote geo-caching data system. The data processing system includes a logical segmentation engine configured to segment a geographic map into geo-areas, each geo-area comprising a subset of the geographic locations represented by the geo-caching data. The data processing system includes an evaluation engine configured to rank, for each of a plurality of the geo-areas, geographic locations in that geo-area. The data processing system includes an aggregation engine configured to select, from each of the plurality of geo-areas, one or more geographic locations with a higher ranking, relative to the rankings of other geographic locations in that geo-area, and to aggregate the selected geographic locations.

Abstract: A logical segmentation data processing system includes a data retrieval interface configured to receive, from a remote geo-caching data system, geo-caching data representing geographic locations specified by the remote geo-caching data system. The data processing system includes a logical segmentation engine configured to segment a geographic map into geo-areas, each geo-area comprising a subset of the geographic locations represented by the geo-caching data. The data processing system includes an evaluation engine configured to rank, for each of a plurality of the geo-areas, geographic locations in that geo-area. The data processing system includes an aggregation engine configured to select, from each of the plurality of geo-areas, one or more geographic locations with a higher ranking, relative to the rankings of other geographic locations in that geo-area, and to aggregate the selected geographic locations.

Abstract: A logical segmentation data processing system includes a data retrieval interface configured to receive, from a remote geo-caching data system, geo-caching data representing geographic locations specified by the remote geo-caching data system. The data processing system includes a logical segmentation engine configured to segment a geographic map into geo-areas, each geo-area comprising a subset of the geographic locations represented by the geo-caching data. The data processing system includes an evaluation engine configured to rank, for each of a plurality of the geo-areas, geographic locations in that geo-area. The data processing system includes an aggregation engine configured to select, from each of the plurality of geo-areas, one or more geographic locations with a higher ranking, relative to the rankings of other geographic locations in that geo-area, and to aggregate the selected geographic locations.

Abstract: A method for making graphene-based highly dense but porous carbon material with a high degree of hardness includes forming a sol by dispersing a graphene-based component in a solvent; preparing a graphene-based gel by reacting the sol in a reacting container at a temperature of about 20° C. to about 500° C. for about 0.1 hours to about 100 hours; and drying the gel at a temperature of about 0° C. to about 200° C. to obtain a material. A graphene-based porous carbon material and applications thereof are also disclosed.

Abstract: A light-emitting device includes a substrate; a light-emitting unit formed on the substrate, comprising a first conductivity type semiconductor; a second conductivity type semiconductor; an active layer formed between the first and the second conductivity type semiconductors; and an exposed region formed in the light-emitting unit, exposing the first conductivity type semiconductor; a first electrode extending layer formed on the first conductivity type semiconductor in the exposed region; a second electrode extending layer formed on the second conductivity type semiconductor; a transparent insulator, formed on the light-emitting unit and filled in the exposed region; a first electrode formed on the transparent insulator; and a plurality of conductive channel layers formed in the transparent insulator; wherein one of the plurality of conductive channel layers connects the first electrode and one of the first and the second electrode extending layers.

Abstract: A logical segmentation data processing system includes a data retrieval interface configured to receive, from a remote geo-caching data system, geo-caching data representing geographic locations specified by the remote geo-caching data system. The data processing system includes a logical segmentation engine configured to segment a geographic map into geo-areas, each geo-area comprising a subset of the geographic locations represented by the geo-caching data. The data processing system includes an evaluation engine configured to rank, for each of a plurality of the geo-areas, geographic locations in that geo-area. The data processing system includes an aggregation engine configured to select, from each of the plurality of geo-areas, one or more geographic locations with a higher ranking, relative to the rankings of other geographic locations in that geo-area, and to aggregate the selected geographic locations.

Abstract: A sodium ion battery electrode material is disclosed, the electrode material including a conductive porous material or a conductive porous composite. A sodium accommodating pore is defined inside the electrode material, effective pore diameter size for sodium ion storage in the sodium accommodating pore is in a range of 0.2-50 nm. A method for preparing the conductive porous composite and a sodium ion battery electrode are also provided.

Abstract: A light-emitting device includes a substrate; a light-emitting unit formed on the substrate, comprising a first conductivity type semiconductor; a second conductivity type semiconductor; an active layer formed between the first and the second conductivity type semiconductors; and an exposed region formed in the light-emitting unit, exposing the first conductivity type semiconductor; a first electrode extending layer formed on the first conductivity type semiconductor in the exposed region; a second electrode extending layer formed on the second conductivity type semiconductor; a transparent insulator, formed on the light-emitting unit and filled in the exposed region; a first electrode formed on the transparent insulator; and a plurality of conductive channel layers formed in the transparent insulator; wherein one of the plurality of conductive channel layers connects the first electrode and one of the first and the second electrode extending layers.

Abstract: A method for making graphene-based highly dense but porous carbon material with a high degree of hardness includes forming a sol by dispersing a graphene-based component in a solvent; preparing a graphene-based gel by reacting the sol in a reacting container at a temperature of about 20° C. to about 500° C. for about 0.1 hours to about 100 hours; and drying the gel at a temperature of about 0° C. to about 200° C. to obtain a material. A graphene-based porous carbon material and applications thereof are also disclosed.