Abstract: A computing device exchanges electronic tickets between a first client device and a second client device. The computing device notifies the first client device and the second client device to confirm match success information when first ticket information of the first client device matches second ticket information of the second client device, and second ticket information of the first client device matches first ticket information of the second client device.

Abstract: A communication device with an audio database comprises an audio receiving module, a locator module, an audio identification module and a notification module. The audio receiving module calculates the strength of the at least one signal, the locator module determines whether each of the strength exceeds a predefined value and determines the directionality of the at least one audio signal in accordance with the strength of the at least one audio signal. The audio identification module compares the audio signal with audio modules in accordance with characteristics parameter to issue a warning.

Abstract: A graphite base is made by: mixing nanometered graphite powder with a bonding agent to form a graphite mixture and then grinding the graphite mixture and processing the graphite mixture into a graphite mass with a high pressure by means of hot press, cold press and vibration, and then dipping the graphite mass in a liquid phase asphalt, and then baking the graphite mass to a dry state graphite block. The dry state graphite block is further coated with a layer of metal coating and bonded with metal radiation fins to form a heat sink.

Abstract: A light emitting module includes a graphite base having a metal bearing surface at one side, a circuit board bonded to the metal bearing surface of the graphite base and having mounting through holes and a circuit layout, and light emitting devices each having a substrate carrying a light emitting chip and mounted in one mounting through hole of the circuit board and kept in contact with the metal bearing surface of the graphite base for transferring heat energy produced during light emitting operation to the graphite base for quick dissipation and two conducting legs electrically connected with the light emitting chip and respectively extended out of the substrate and electrically bonded to the circuit layout of the circuit board.

Abstract: A graphite base is made by: mixing nanometered graphite powder with a bonding agent to form a graphite mixture and then grinding the graphite mixture and processing the graphite mixture into a graphite mass with a high pressure by means of hot press, cold press and vibration, and then dipping the graphite mass in a liquid phase asphalt, and then baking the graphite mass to a dry state graphite block. The dry state graphite block is further coated with a layer of metal coating and bonded with metal radiation fins to form a heat sink.