Abstract: The present disclosure relates to a plurality of host materials comprising a first host material having a compound represented by formula 1, and a second host material having a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds of the present disclosure as host materials, it is possible to provide an organic electroluminescent device having long lifetime properties while having an equivalent or improved level of power efficiency compared to conventional organic electroluminescent devices.

Abstract: A refrigerator includes a deodorizer installed on an upper surface of a storage compartment. The deodorizer includes a housing in which a flow path is provided, a suction port provided on a lower surface of the housing to suck air, a discharge port provided in the front of the suction port to discharge air, a photocatalytic deodorizing filter disposed at an inner side of the suction port, and a filter light source configured to irradiate light to the photocatalytic deodorizing filter, the flow path is configured to guide air from a rear lower side where the suction port is positioned to a front lower side where the discharge port is positioned, and the filter light source is disposed above the photocatalytic deodorizing filter to face the photocatalytic deodorizing filter in a state of being spaced apart from each other, and positioned above air passing through the flow path.

Abstract: Time delay devices for producing tunable time delays in optical signals. Cascades of the time delay devices can be used for beam steering in phased-array antennas. The time delay may be produced by selecting a time delay between an input and output of the time delay device from any of the time delay obtained by all four-port switches of the time delay device being in an OFF state and time delays obtainable by switching any one of the four-port switches to an ON state; and producing the selected time delay between the input and output of the time delay device by performing any of avoiding an application of an electrical control signal to any of electro-optic switch elements of the time delay device and applying the electrical control signal to one of the electro-optic switch elements that corresponds to a four-port coupler corresponding to the selected time delay.

Abstract: Provided is an atypical environment-based location recognition apparatus. The apparatus includes a sensing information acquisition unit configured to, from sensing data collected by sensor modules, detect object location information and semantic label information of a video image and detect an event in the video image; a walk navigation information provision unit configured to acquire user movement information; a metric map generation module configured to generate a video odometric map using sensing data collected through a sensing information acquisition unit and reflect the semantic label information; and a topology map generation module configured to generate a topology node using sensing data acquired through the sensing information acquisition unit and update the topology node through the collected user movement information.

Abstract: A device for identifying a road surface includes: storage for storing a deep learning-based road surface model; and a controller configured to identify a type of a road surface on which a vehicle is currently traveling, using the road surface model. The device for identifying a road surface can identify a type of a road surface on which the vehicle is traveling based on deep learning and control the terrain mode of the vehicle based on the identified type of the road surface. The type of the road surface on which the vehicle is traveling may be identified with a high accuracy and an optimal terrain mode may be set, thereby improving not only travel stability but also riding comfort of the vehicle.

Abstract: The present disclosure relates to a hydrogenated petroleum resin and a rubber composition including the same. The hydrogenated petroleum resin according to the present disclosure not only improves the viscoelastic properties of rubber containing the same, but also has excellent compatibility with rubber, thereby improving the overall physical properties of the rubber. Thus, rubber molded articles manufactured from the rubber composition containing the hydrogenated petroleum resin, for example, tires, have improved grip strength (wet/dry) and reduce an increase in rolling resistance due to the improvement in grip force to simultaneously satisfy two properties of grip force and rolling resistance required as a tire, thereby manufacturing a low-fuel consumption and high-performance tire.

Abstract: According to various example embodiments, a data management method of an electronic device includes obtaining selection information on or regarding a first product, obtaining selection information on a second product corresponding to the first product based on the selection information on the first product, identifying purchase information about the first product and the second product, transmitting the purchase information about the first product to a first server related to delivery of the first product and transmitting the purchase information about the second product to a second server, and transmitting activation-related information of the second product to the second server in response to delivery status information of the first product, wherein the first product includes a physical product requiring delivery, and the second product includes an insurance product for the first product.

Abstract: A method for preparing a catalyst for a fuel cell including performing a first supporting; separating particles unsupported in the first supporting; heat treating; and performing a second supporting, and a catalyst for a fuel cell prepared using the same.

Abstract: An integrated circuit field effect transistor includes contact pads which are separated by sidewall spacers. A first pad which electrically contacts one of the spaced-apart source and drain regions extends onto the gate electrode top, to define a first pad sidewall on the gate electrode top. A first capping layer on the first pad defines a first capping layer sidewall on the first pad. A first insulating sidewall spacer is formed on the first pad sidewall and on the first capping layer sidewall. A second pad, electrically contacting the other of the source and drain regions, extends onto the gate electrode top and contacts the first insulating sidewall spacer. A second capping layer may be formed on the second pad, opposite the substrate, to define a second capping layer sidewall on the first capping layer. A second insulating sidewall spacer may be formed on the second pad sidewall and on the second capping layer sidewall.

Abstract: An integrated circuit field effect transistor includes contact pads which are separated by sidewall spacers. A first pad which electrically contacts one of the spaced-apart source and drain regions extends onto the gate electrode top, to define a first pad sidewall on the gate electrode top. A first capping layer on the first pad defines a first capping layer sidewall on the first pad. A first insulating sidewall spacer is formed on the first pad sidewall and on the first capping layer sidewall. A second pad, electrically contacting the other of the source and drain regions, extends onto the gate electrode top and contacts the first insulating sidewall spacer. A second capping layer may be formed on the second pad, opposite the substrate, to define a second capping layer sidewall on the first capping layer. A second insulating sidewall spacer may be formed on the second pad sidewall and on the second capping layer sidewall.