Abstract: A display device according to some embodiments includes: a substrate; a plurality of common voltage lines positioned on the substrate; a plurality of connection electrodes positioned on a plurality of common voltage lines; an emission layer positioned on the connection electrode; and a common electrode positioned on the emission layer, wherein the emission layer has a plurality of first openings positioned on at least a portion of a plurality of connection electrodes, the common electrode is electrically connected to the connection electrode through a plurality of first openings, and a pitch of a first direction of a plurality of first openings has a range of about 0.1 mm to about 2.5 mm.

Abstract: A gas/liquid dissolution device includes: a dissolution case of a cylindrical shape; an introduction port outside a side surface of the dissolution case, where a dissolution water is introduced into the dissolution case and a different kind of gas is mixed through the introducing port; a gas/liquid separation inducer in the dissolution case, the gas/liquid separation inducer inducing the dissolution water and an insoluble gas introduced into the dissolution case to be separated to a gas and a liquid by a centrifugal force; and a discharge port outside an end portion of the dissolution case. The dissolution water and the insoluble gas are discharged from the dissolution case through the discharge port.

Abstract: A gas/liquid dissolution device includes: a dissolution case; an introduction port outside a side surface of the dissolution case; a gas/liquid separation inducing means in the dissolution case, the gas/liquid separation inducing means inducing the dissolution water and an insoluble gas introduced into the dissolution case; and a discharge port outside an end portion of the dissolution case. The introduction port includes: an introduction tube connected to the dissolution case; an insertion tube inserted into the introduction tube; and an intake tube connected to the insertion tube. The discharge port has a structure where a discharge flow path communicating with an interior of the dissolution case is formed therein.

Abstract: A WSN-based context awareness engine applies spatial filtering to sensed data which is output from sensors included in a group to filter data in which an error does not occur, identifies a non-operated sensor, compares filtered data with at least one condition to determine a current state of a place corresponding to the group, and combines the determined current state and information regarding the group to generate a context-awareness result.

Abstract: A WSN-based context awareness engine applies spatial filtering to sensed data which is output from sensors included in a group to filter data in which an error does not occur, identifies a non-operated sensor, compares filtered data with at least one condition to determine a current state of a place corresponding to the group, and combines the determined current state and information regarding the group to generate a context-awareness result.