Abstract: The lighting device disclosed in the embodiment includes a substrate, a light emitting device disposed on a lower surface of the substrate, a reflective layer disposed to face a light emitting surface of the light emitting device, a first resin layer disposed between the substrate and the reflective layer, and a light-transmission control layer disposed on an upper surface of the substrate, wherein the light-transmission control layer may include a liquid crystal layer including a cholesteric liquid crystal, and light emitted through the light emitting surface of the light emitting device may be reflected by the reflective layer and be provided to the light-transmission control layer through the substrate.

Abstract: The present invention relates to stem cell-derived mature cardiomyocytes and a cardiovascular disease model using same and, more specifically, to differentiation into mature ventricular cardiomyocytes by culturing stem cells in a medium containing FGF4 and ascorbic acid, and use of the differentiated mature ventricular cardiomyocytes as a cardiovascular disease cell model. The mature ventricular cardiomyocytes, obtained by culturing stem cells in a medium containing FGF4 and ascorbic acid and inducing the differentiation thereof, and cardiovascular disease cell model using same according to the present invention are very useful for screening for cardiovascular disease therapeutic agents and evaluation of the toxicity of new drugs.

Abstract: An electronic device using an Internet Protocol (IP) telephony technology and a method and system for forwarding information between the electronic device and a call center system are provided. The method includes sending, by an electronic device, a telephony connection request to a call center system, generating, by a switch device, a response message including connection information of a web ARS server of the call center system in response to the telephony connection request, sending, by the switch device, the response message including the connection information to the electronic device, forming, by the electronic device, a data session with the web ARS server using the received connection information of the web ARS server, and providing the ARS of the display scheme using information received from the web ARS server.

Abstract: The present invention relates to a system and method for providing additional information to a mobile communication terminal when a call is attempted, and provides a system for providing additional information to a mobile communication terminal when a call is attempted, the system including a mobile communication terminal configured to, when a call request signal is generated, receive additional information, set for a called telephone number, from an additional information provision server and then display the received additional information on a display unit before a call connection process is performed; and the additional information provision server configured to send the additional information to the mobile communication terminal, and a method using the system.

Abstract: The present invention relates to an additional service executing apparatus included in a user terminal to provide an additional service, and to a method for providing an additional service using the apparatus. Provided is an additional service executing apparatus having a display unit, included in a user terminal to provide an additional service, the apparatus comprising: an additional service menu interface providing unit which is driven by a signal generated upon the detection of a preset event, and which outputs an additional service menu interface corresponding to the detected event on the display unit; and an additional service execution unit for providing an additional service by performing an operation corresponding to the additional service menu selected through the additional service menu interface by a user. Also provided is a method for providing an additional service using the apparatus.

Abstract: An electronic device using an Internet Protocol (IP) telephony technology and a method and system for forwarding information between the electronic device and a call center system are provided. The method includes sending, by an electronic device, a telephony connection request to a call center system, generating, by a switch device, a response message including connection information of a web ARS server of the call center system in response to the telephony connection request, sending, by the switch device, the response message including the connection information to the electronic device, forming, by the electronic device, a data session with the web ARS server using the received connection information of the web ARS server, and providing the ARS of the display scheme using information received from the web ARS server.

Abstract: A method of forming a connection terminal may include preparing a substrate, forming a first conductor of a tube shape having an opened upper portion on the substrate, forming a second conductor on the first conductor, and annealing the second conductor so that a portion of the second conductor extends in an internal space of the first conductor through the opened upper portion.

Abstract: A ferroelectric memory device may include a substrate, an interlayer insulating layer on the semiconductor substrate, a contact plug penetrating the interlayer insulating layer, the contact plug being formed of a sequentially stacked metal plug and buffer plug, a conductive protection pattern covering the contact plug, the conductive protection pattern being a conductive oxide layer, a lower electrode, a ferroelectric pattern, and an upper electrode sequentially stacked on the conductive protection pattern, and an insulating protection layer covering the sequentially stacked lower electrode, ferroelectric pattern, and upper electrode.

Abstract: A semiconductor memory device and a method for forming the same. The method includes forming an insulating layer on a semiconductor substrate having a conductive region, forming a contact hole that exposes the conductive region by etching the insulating layer, forming a barrier metal layer that covers a sidewall and a bottom of the contact hole, and forming a contact plug in the contact hole by interposing the barrier metal layer therebetween. An etching process may be preformed that recesses the barrier metal layer and the contact plug in such a manner that a top surface of the contact plug protrudes upward beyond a top surface of the barrier metal layer. A capping plug may be formed covering the recessed barrier metal layer and the recessed contact plug. A capacitor may be formed on the capping plug.