Abstract: A polybenzimidazole based polymer in which substituted or non-substituted benzyl groups are introduced to the two nitrogen atoms of benzimidazole ring. The benzimidazole ring is not decomposed by the attack of hydroxide ions but shows excellent alkali resistance, and thus maintains high ion conductivity. The polybenzimidazole based polymers are particularly useful for not only solid alkali exchange membrane fuel cells (SAEMFC) but also various industrial fields in which polybenzimidazole based polymers are used.

Abstract: Disclosed are a method and an apparatus for an intact evaluation of the unit cells in a fuel cell stack. Since the degradation of the unit cells can be detected intactly, i.e. without disassembly of the stack, the time required for the detection and analysis thereof can be greatly reduced.

Abstract: Disclosed herein are an experience ride representation apparatus and method for a real-sense media service based on a multi-vision. An experience ride representation apparatus for a real-sense media service based on a multi-vision in which a motion of a user is reflected so as to move in a plurality of screen units depending on a first signal received from the user, a second signal is transmitted to the user based on real-sense media contents reproduced on the screen unit, and metaverse contents are provided to a plurality of users when the screen unit is shared by the plurality of users.

Abstract: Disclosed are a 5-(2,6-dioxyphenyl)tetrazole-containing polymer, a method for preparing the same, a membrane containing the same and an electrochemical device, particularly a high temperature polymer electrolyte membrane fuel cell, including the membrane. The membrane containing the 5-(2,6-dioxyphenyl)tetrazole-containing polymer is capable of providing high proton conductivity and exhibiting good mechanical properties, thereby capable of providing superior fuel cell performance. Accordingly, the membrane may be usefully used in an electrochemical device, particularly a fuel cell, more particularly a high temperature polymer electrolyte membrane fuel cell.

Abstract: A system for providing sensory effects according to an embodiment of the present invention comprises an apparatus for providing vestibular rehabilitation videos configured to correct playback time of sensory effect metadata included in a plurality of integrated files based on start time of transport stream, and generate transport stream including the sensory effect metadata; and a gateway configured to receive the transport stream from the apparatus for providing vestibular rehabilitation videos, extract audio data, video data and the sensory effect metadata from the transport stream, transmit the audio data and the video data to a video player, and transmit the sensory effect metadata to an apparatus for providing sensory effects based on the corrected playback time.

Abstract: The present disclosure relates to a method and an apparatus for preparing nanosized metal or alloy nanoparticles by depositing metal or alloy nanoparticles with superior size uniformity on the surface of a powder as a base material by vacuum deposition and then dissolving or melting the base material using a solvent or heat. The method solves the problems of the existing expensive multi-step synthesis method based on chemical reduction and allows effective synthesis of metal or alloy nanoparticles with very uniform size and metal or alloy catalyst nanoparticles supported on carbon at low cost.

Abstract: Provided is a catalyst for oxygen reduction reaction comprising an alloy comprising at least one selected from Pt, Pd and Ir supported on a carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM). The catalyst for oxygen reduction reaction has electronic ensemble effects by virtue of the carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM), and thus shows improved oxygen reduction activity and durability as compared to conventional catalysts supported on carbon.

Abstract: The present invention relates to an apparatus and a method for supporting a safe living. An embodiment of the present invention provides an apparatus for supporting a safe living that includes: an information receiving unit configured to receive information on a sensor, information on a device and information on a user; a pattern information generating unit configured to generate condition pattern information by use of sensing value information measured by the sensor and operation state information of the device; a condition assessing unit configured to assess a current condition by comparing the condition pattern information with the sensing value information and the operation state information; a profile unit configured to search for a control service of the device corresponding to the current condition; and a condition handling unit configured to perform a proper control the device corresponding to the current condition based on the control service.

Abstract: Disclosed is a non-precious metal based water electrolysis catalyst represented by CoX/C (X is at least one selected from the group consisting of P, O, B, S and N) for evolution of hydrogen and oxygen at a cathode and anode, respectively, at the same time, the catalyst including a cobalt-containing compound fixed to a carbon carrier.

Abstract: Provided are a method for preparing a Nafion membrane having a through-pore free monolithic porous structure throughout the bulk of the membrane through a one-step process very easily and a Nafion membrane having a through-pore free monolithic porous structure obtained from the method. The Nafion membrane having such a porous structure may have an increased surface area, and thus may improve the membrane/catalyst interfacial area and transport characteristics.

Abstract: A thing cooperation service system and method, and a modeling tool thereof are provided. The thing cooperation service system includes a storage manager configured to store and manage a thing control specification with respect to a plurality of things; and a modeling tool configured to provide the user with a thing which is in a specific social relationship with a user in the plurality of things using information of the user and the thing control specification, and generate an application providing a thing cooperation service using a thing selected from things which are in the specific social relationship.

Abstract: Provided herein is an education service system including a user device, which reproduces provided learning content and generates device input information through user input; a learning situation recognition unit, which calculates user state information based on the device input information and selects recommended content depending on the user state information, and a learning content providing unit, which provides learning content corresponding to the recommended content from among a plurality of pieces of pre-stored learning content to the user device.

Abstract: Disclosed herein are a metaverse client terminal and method for providing a metaverse space capable of enabling interaction between users. The metaverse client terminal includes a sensing data collection unit, a motion state determination unit, a server interface unit, and a metaverse space provision unit. The sensing data collection unit collects sensing data regarding a motion of a first user. The motion state determination unit determines a motion state of the first user, and generates state information data of the first user. The server interface unit transmits the state information data of the first user to a metaverse server, and receives metaverse information data and state information data of a second user. The metaverse space provision unit generates a metaverse space, generates a first avatar and a second avatar, incorporates the first and second avatars into the metaverse space, and provides the metaverse to the first user.

Abstract: Exemplary embodiments of the present invention relate to a telepresence service providing method and an apparatus thereof. The telepresence service providing method according to the present invention comprises: receiving at least one of current location information, peripheral device information acquired at the current location, and noise information acquired at the current location from a user device; generating or updating a service profile which specifies a service mode corresponding to the user device and a device profile which specifies functions which the user device and the peripheral devices can provide, based on the received information; and transmitting data for telepresence services to at least one device of the user device and the peripheral devices based on the profiles. According to exemplary embodiments of the present invention may provide a telepresence service with consideration of user's surrounding environment.

Abstract: Disclosed is a method for producing a core-shell structured electrocatalyst for a fuel cell. The method includes uniformly supporting nano-sized core particles on a support to obtain a core support, and selectively forming a shell layer only on the surface of the core particles of the core support. According to the method, the core and the shell layer can be formed without the need for a post-treatment process, such as chemical treatment and heat treatment. Further disclosed is a core-shell structured electrocatalyst for a fuel cell produced by the method. The core-shell structured electrocatalyst has a large amount of supported catalyst and exhibits superior catalytic activity and excellent electrochemical properties. Further disclosed is a fuel cell including the core-shell structured electrocatalyst.

Abstract: Provided are a ceria-based composition having an undoped or metal-doped ceria and an undoped or metal-doped bismuth oxide, wherein the undoped or metal-doped bismuth oxide is present in an amount equal to or more than about 10 wt % and less than about 50 wt % based on the total weight of the ceria-based composition, and at least one selected from the ceria and the bismuth oxide is metal-doped. The ceria-based composition may ensure high sintering density even at a temperature significantly lower than the known sintering temperature of about 1400° C., i.e., for example at a temperature of about 1000° C. or lower, and increase ion conductivity as well.

Abstract: The present invention relates to a method and an apparatus for modifying a previously sent UC message.

Abstract: Exemplary embodiments relate to an apparatus and a method for providing a dynamic collaboration service. A dynamic collaboration service platform according to one embodiment may include a collaboration managing module configured to collect and manage a plurality of unit services required for collaboration to analyze application service specification related to an application service and provide the application service based on the analyzed result; a service operating module configured to install and operate the collected plurality of unit services; and an execution engine configured to provide a virtual machine for executing the plurality of unit services.

Abstract: Provided is poly(benzimidazole-co-benzoxazole) having polybenzimidazole to which benzoxazole units are introduced, as a polymer electrolyte material. The polymer electrolyte material has both high proton conductivity and excellent mechanical properties even when it is obtained by in-situ phosphoric acid doping. The polymer electrolyte material may substitute for the conventional phosphoric acid-doped polybenzimidazole in a polymer electrolyte membrane fuel cell, particularly in a high-temperature polymer electrolyte membrane fuel cell.