Abstract: The present invention relates to an insulating gas used for electrical insulation or arc extinguishing of an electrical device, and an electrical device for insulating electricity using the same. The insulating gas of the present invention, which may replace SF6 gas, consists of a mixed gas of trifluoromethyl trifluorovinyl ether (CF3OCFCF2) and a carrier gas. The insulating gas of the present invention has the characteristics of a low boiling point, high dielectric strength, low toxicity, and a low global warming potential (GWP=1 or less), and thus may replace SF6, and the low global warming potential with no loss of high insulating capacity and arc extinguishing capability may reduce greenhouse gases.

Abstract: A method for operation of a user terminal, according to an embodiment of the present invention, comprises the steps of: registering a first address as DNS server information in a virtual private network (VPN) module; driving an application interworking with a target service server; acquiring domain name server (DNS) lookup request result information corresponding to the target service server by using the DNS server information; generating access domain information from the domain name server (DNS) lookup request result information; and outputting, on the basis of the access domain information, related useful information, such as user payment means-specific benefit notification corresponding to the application.

Abstract: A decoration element is described. The decoration element includes a light reflective layer; a light absorbing layer provided on the light reflective layer; and a color developing layer comprising a color film, wherein the color developing layer is provided: on a surface of the light reflective layer opposite to a surface of the light reflective layer facing the light absorbing layer; between the light reflective layer and the light absorbing layer; or on a surface of the light absorbing layer opposite to a surface of the light absorbing layer facing the light reflective layer.

Abstract: This specification relates to a decoration member including: a substrate; and a decoration layer provided on the substrate in which there are one or more combinations of viewing angles ? and ? in which a contrast parameter Cn represented by Equation 1 is 0.1 or more.

Abstract: A method and apparatus and computer readable record media for communication on a Wi-Fi direct multi-group network. A method for communication in the Wi-Fi direct multi-group network comprising receiving, by a Wi-Fi direct multi-group network server, a request for transmission of a Wi-Fi direct communication application for a Wi-Fi direct multi-group communication service from an user equipment (UE) directly or indirectly through a relay server; and transmitting, by the Wi-Fi direct multi-group network server, the Wi-Fi direct communication application to the UE directly or indirectly through the relay server, wherein the Wi-Fi direct communication application determines destination address information for communication of the UE in the Wi-Fi direct multi-group network.

Abstract: A method and apparatus and computer readable record media for communication on a Wi-Fi direct multi-group network. A method for communication in the Wi-Fi direct multi-group network comprising receiving, by a Wi-Fi direct multi-group network server, a request for transmission of a Wi-Fi direct communication application for a Wi-Fi direct multi-group communication service from an user equipment (UE) directly or indirectly through a relay server; and transmitting, by the Wi-Fi direct multi-group network server, the Wi-Fi direct communication application to the UE directly or indirectly through the relay server, wherein the Wi-Fi direct communication application determines destination address information for communication of the UE in the Wi-Fi direct multi-group network.