Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other; an emission layer disposed between the first electrode and the second electrode and including a plurality of quantum dots and a first hole transporting material having a substituted or unsubstituted C4 to C20 alkyl group attached to a backbone structure; a hole transport layer disposed between the emission layer and the first electrode and including a second hole transporting material; and an electron transport layer disposed between the emission layer and the second electrode.

Abstract: An arylamine-fluorene alternating copolymer having a structural unit (A) is represented by Chemical Formula (1): wherein Chemical Formula (1) is the same as described in the detailed description.

Abstract: A ceramic paint composition including a polysiloxane, an aluminum oxide, a silicone-based urethane resin, and a solvent component and a brake disc plate for a vehicle including an anticorrosive coated film including the ceramic paint composition are provided.

Abstract: A ceramic paint composition including a polysiloxane, an aluminum oxide, a silicone-based urethane resin, and a solvent component and a brake disc plate for a vehicle including an anticorrosive coated film including the ceramic paint composition are provided.

Abstract: An anticorrosion wax composition containing plate zinc flake includes plate zinc flake 5 to 15 wt %, anticorrosion additives 38 to 50 wt %, wax 15 to 20 wt %, oil 10 to 15 wt %, alkyd resin 5 to 10 wt %, and additives 0.5 to 2 wt %.

Abstract: Disclosed is a matte clear coat paint composition for a vehicle including a polymer resin for paint and a matting agent, the matting agent containing silica and talc. The disclosed matte clear coat paint composition for a vehicle reduces the amount of silica used as a matting agent, which is economically advantageous, in order to provide a matting effect equivalent to that of an existing matte clear coat paint compositions, and significantly reduces agglomeration of pigments, thereby providing a uniform application. Moreover, it is possible to prevent the occurrence of gloss due to friction with cloth, flannel, etc. and provide various textures by changing the type of talc.

Abstract: A method and a system are disclosed for transmitting/receiving data in heterogeneous communication systems having a mobile station, a first communication system currently accessed by the mobile station, and a second communication system having an access scheme different from the first communication system. The method includes accessing, by the mobile station, the first communication system and maintaining an active session with the first communication system; accessing, by the mobile station, the second communication system and requesting an active session to the second communication system when sensing handover to the second communication system while the active session with the first communication system is maintained; and maintaining, by the mobile station, the active session with the first communication system by means of an active session with the second communication system created according to the requested active session.

Abstract: Provided are a lottery system and method based on the sequence number of payment. The system and method discount a payment amount of a prize winner by an amount that is computed by aggregating certain rates of sales of non-winners by means of giving a sequence number of amount payment for each payment amount group at the time of making card payment or cash payment, and also discount the payment amount depending on the sequence numbering result for each winning probability by allowing customers to select the winning probabilities.

Abstract: A method for performing a handoff between a wireless local area network (LAN) including an access router (AR) supporting an Internet protocol (IP) routing function and a mobile communication network including a packet data service node (PDSN) connected to a base station system (BSS), for supporting the IP routing function. An access terminal (AT) detects its movement from the wireless LAN to the mobile communication network, and exchanges information for tunneling between the AR and the PDSN, with the PDSN. The PDSN sets up a tunnel for packet delivery between the PDSN and the AR, and delivers packets to the AT through the set tunnel.

Abstract: The present invention relates to a process for preparing a pearl pigment, comprising the steps of (a) adding an aqueous solution of metal oxide to a substrate in a reactor and (b) adding ammonium bicarbonate aqueous solution as a precipitating agent.

Abstract: A method is provided a system for transmitting/receiving data in heterogeneous communication systems having a mobile station, a first communication system currently accessed by the mobile station, and a second communication system having an access scheme different from the first communication system. The method includes accessing, by the mobile station, the first communication system and maintaining an active session with the first communication system; accessing, by the mobile station, the second communication system and requesting an active session to the second communication system when sensing handover to the second communication system while the active session with the first communication system is maintained; and maintaining, by the mobile station, the active session with the first communication system by means of an active session with the second communication system created according to the requested active session.

Abstract: A system and method are provided for performing voice data handoff from a cellular network to a portable Internet/wireless local area network (WLAN) network by a mobile terminal in a heterogeneous network environment. The system and method are provided wherein whether to perform handoff is determined, and a location of a mobile terminal in the portable Internet/WLAN network is registered, a request for handoff is sent to the cellular network, and in response thereto, a request for voice-over-Internet protocol (VoIP) call setup through a specific upper node of the portable Internet/WLAN network is received, and the VoIP call to the upper node of the portable Internet/WLAN network is set-up, and resources of a circuit voice call to a specific upper node of the cellular network are released.

Abstract: A handoff method is provided between a mobile communication network including a packet data service node (PDSN), connected to a base station system (BSS), for supporting an Internet protocol (IP) routing function, and a wireless local area network (LAN) including an access router (AR) supporting the IP routing function. Upon detecting handoff to the wireless LAN, an access terminal (AT) with a contact set up to the PDSN exchanges a data packet with a correspondent node (CN) via a tunnel between the AR and the PDSN. The AT determines a user traffic state according to a transmission/reception state of the data packet, and changes the contact connected to the AT according to the user traffic state.

Abstract: A method for performing a handoff between a wireless local area network (LAN) including an access router (AR) supporting an Internet protocol (IP) routing function and a mobile communication network including a packet data service node (PDSN) connected to a base station system (BSS), for supporting the IP routing function. An access terminal (AT) detects its movement from the wireless LAN to the mobile communication network, and exchanges information for tunneling between the AR and the PDSN, with the PDSN. The PDSN sets up a tunnel for packet delivery between the PDSN and the AR, and delivers packets to the AT through the set tunnel.

Abstract: A handoff system and method is provided for performing handoff from a mobile communication network, including a packet data service node (PDSN) connected to a base station system (BSS) for supporting an Internet protocol (IP) routing function, to a wireless local area network (LAN) including an access router (AR) supporting the IP routing function. An access terminal (AT) detects its movement to the wireless LAN and exchanges information with the AR for tunneling between the PDSN and the AR. The AR sets up a tunnel for packet delivery between the AR and the PDSN, and delivers packets delivered from a correspondent node (CN) to the AT via the set tunnel.

Abstract: A method and system for providing a handoff between a mobile communication network including a mobile switching center (MSC) and a home location register (HLR), and a wireless local area network (WLAN) including an access point (AP) and a voice over Internet protocol (VoIP) gateway to provide a VoIP service. The HLR registers therein subscriber information for the MT including an Internet protocol (IP) address of the AP. The MT transmits a handoff request to the MSC if the MT connected to the mobile communication network has moved to a region of the WLAN. The HLR transmits the subscriber information to the VoIP gateway. The AP allocates an IP address and a channel for WLAN access by the MT, and sets a session for a VoIP service of the MT.

Abstract: The present invention discloses a method for forming a semiconductor device which increases capacitance by forming a structure of a trench capacitor and uses an inner side face of the capacitor as a capacitor region.

Abstract: The present invention discloses a method for forming a semiconductor device which increases capacitance by forming a structure of a trench capacitor and uses an inner side face of the capacitor as a capacitor region.

Abstract: A polyimide for optical communications has a monomer, represented by the formula (1), as a repeating unit: ##STR1## wherein X.sub.1 and X.sub.2 are independently selected from the group consisting of halogen atom, halogenated alkyl group, halogenated aromatic ring group, --NO.sub.2, --OR.sup.1 and --SR.sup.1 (where R.sup.1 is selected from the group consisting of halogenated alkyl and halogenated aromatic ring groups); and Z is selected from the group consisting of divalent halogenated aliphatic hydrocarbon, divalent halogenated aliphatic cyclic hydrocarbon and divalent halogenated aromatic hydrocarbon. Thus, light absorption loss at a near infrared light wavelength range can be minimized by using the polyimide, so that the polyimide is very useful as an optical material in the optical communications field using light of a near infrared light region.

Abstract: A bis(disubstitutedmaleimide) derivative and a polyetherimide for optical communications and the polyetherimide formed therefrom are described. The polyetherimde has a high refractive index, so that when using such polyetherimide as a material for a core of an optical fiber, the range of the materials that can be selected for the cladding becomes wide. Also, a coating property and adhesion to a substrate are improved, thereby providing a good film forming property and thermal stability. Also, because the polyetherimide can minimize optical loss at a near infrared wavelength range, the polyetherimide is very useful as an optical material in the optical communications field adopting the light of near infrared wavelength.