Abstract: A white organic light emitting device, with improved color shift characteristics and improved efficiency according to viewing angle changes by controlling conditions for designing an optical path in organic material layers between a cathode and an anode or adjusting interior or exterior thicknesses of the organic material layers, has a structure including a first electrode and layers between the first electrode and a second electrode satisfies an optical path condition represented by the following equation n a ? d a ? + ? j ? ? n j w ? d j w ? = 1.85 ? 2.15 with respect to emissions of the first and second stacks, where ? is an emission peak wavelength of the first stack or the second stack, na and da are a refractive index and a thickness of a transparent electrode selected from the first and second electrode, and nw and dw are a refractive index and a thickness of any one of the layers disposed between the first electrode and the second electrode, respectively.

Abstract: Disclosed herein are a surface type heating element and a roll screen type home sauna apparatus. The surface type heating element includes rayon-based carbon yarn emitting resistance heat, metal yarn having an antibacterial/anti-fungal function, and transparent synthetic resin film serving to admit sufficient illumination, wherein the rayon-based carbon yarn, the metallic yarn, and the transparent to each other, and are interwoven with polyester yarn. Further, a radiation coating layer, containing the mixture of ore powder and far infrared radiating material is applied to a surface of the heating element, and the heat blocking coating layer is applied to the other surface of the heating element. Upper portions of strands of the rayon-based carbon yarn are connected to a power supply line, and lower portions of strands of the rayon-based carbon yarn are connected via a common connection part.

Abstract: Disclosed are a method and a system that adaptively transform visual contents inputted from a network, in accordance with the visual characteristics of a terminal user. A visual characteristics descriptor that describes the information of the user visual characteristics in a predetermined format is proposed. The descriptor includes the information of the color vision deficiency type and the color vision deficiency degree. The color vision deficiency may be described in numerical degree or textual degree. The invention adaptively transforms visual contents differently in accordance with the color vision deficiency type.