Abstract: A circularly polarizing plate capable of improving the tone of reflective color sense by using a retardation film having flat dispersion characteristics; and an OLED device comprising the circularly polarizing plate.

Abstract: The present invention relates to a novel lappaconitine derivative and a pharmaceutically acceptable salt thereof, a preparation method therefor, and a medical use thereof using osteogenesis-promoting activity. The lappaconitine derivative induces the differentiation of stem cells into preosteoblasts, and increases bone density when administered to an osteoporosis animal model, and induces osteogenesis, and thus can be effectively used for preventing, alleviating, or treating bone-related diseases such as osteoporosis.

Abstract: The present invention pertains to a novel lappaconitine derivative, a method for producing same, and a pharmaceutical use thereof using osteogenesis-promoting activity. The lappaconitine derivative induces the differentiation of stem cells into osteoblasts, increases bone mineral density when administered to animal models of osteoporosis, and induces bone formation in animal models of bone fracture, and thus can be advantageously used for preventing, ameliorating, or treating bone-related diseases such as osteoporosis, as well as treating non-disease fractures caused by physical trauma.

Abstract: Provided are a virtualization server for presentation virtualization and a method thereof. The virtualization server includes: a virtual layer management unit which generates a virtual screen for a user terminal; a service operation unit which executes a service requested from the user terminal, and displays a result of the executed service on the virtual screen; a screen division processing unit which divides the virtual screen into a plurality of sub-blocks; and an image data encoding unit which classifies the plurality of sub-blocks into image sub-blocks and text sub-blocks and encodes the image sub-blocks by a first encoding scheme and encodes the text sub-blocks by a second encoding scheme.

Abstract: Provided are a virtualization server for presentation virtualization and a method thereof. The virtualization server includes: a virtual layer management unit which generates a virtual screen for a user terminal; a service operation unit which executes a service requested from the user terminal, and displays a result of the executed service on the virtual screen; a screen division processing unit which divides the virtual screen into a plurality of sub-blocks; and an image data encoding unit which classifies the plurality of sub-blocks into image sub-blocks and text sub-blocks and encodes the image sub-blocks by a first encoding scheme and encodes the text sub-blocks by a second encoding scheme.

Abstract: Provided are a method and apparatus for providing and using content advisory (CA) information on Internet contents. A method of providing CA information by using a CA information server, includes receiving a request for the CA information on a content, from an Internet Protocol television (IPTV); searching for CA information on the content; and transmitting the found CA information to the IPTV. A method of using CA information when an IPTV reproduces a content not having the CA information, according to the present invention, includes transmitting a request for CA information, to a CA information server; receiving the CA information from the CA information server; analyzing the CA information; and applying the CA information.