Abstract: Disclosed is a method, receiver, multi-receiver device, system and computer readable medium for configuring a receiver to perform multi-transmitter channel estimation for a time-varying channel. In one aspect, the method includes: wirelessly receiving at least two frames, each frame including a block of training symbols received at different points in time for a time-varying channel; estimating, for each block at a block location, a first channel coefficient of the time-varying channel, wherein the block location is the same for each block; and interpolating or extrapolating a plurality of second channel coefficients for the respective training symbols of each block based on the respective first channel coefficient.

Abstract: The present invention relates to a benzoxazine-based mixture and a use thereof and, more specifically, to a benzoxazine-based mixture and a use of a cured product in which the benzoxazine-based mixture is cured, wherein the benzoxazine-based mixture has high dielectric characteristics, heat resistant characteristics, and flame-retardant characteristics by comprising a benzoxazine ring in a molecular structure, and thus can be applied to a sealing material, a molding material, a template material, an adhesive, a material for an electric insulation paint, and the like, which are used for a copper clad laminate or an electronic part, used in a printed circuit board.

Abstract: A composition for alleviating, preventing, or treating hyperoxia-induced lung injury, the composition including the WKYMVm peptide as an active ingredient is described. The composition has an effect of increasing FPR2 activation and ERK phosphorylation, and also has an effect of improving alveolarization and angiogenesis in hyperoxia-induced lung injury models, and thus the composition is anticipated to be usefully used for the alleviation, prevention, or treatment of hyperoxia-induced lung injury, particularly bronchopulmonary dysplasia.

Abstract: Provided is a negative electrode active material for a lithium secondary battery according to the present invention, including a carbon-based particle including pores in an inner portion and/or a surface thereof; and a silicon-based coating layer positioned on a pore surface and/or a pore-free surface of the carbon-based particle and containing silicon carbon compound.

Abstract: The present invention relates to a pharmaceutical composition for preventing or treating chronic pulmonary disease, a pharmaceutical formulation containing the same, and a method for preparing the same, the composition comprising as an active ingredient an exosome derived from thrombin-treated stem cells. The therapeutic agent is advantageous in that since the therapeutic agent is a cell-free preparation, the risk of carcinogenesis is low and there is no problem of transplant rejection reaction, and furthermore, there is no possibility of causing the occlusion of the microvascular system upon systemic administration, and since the therapeutic agent is a non-cell separating material, it is possible to develop a pharmaceutical agent as an off-the-shelf product, thereby reducing the manufacturing cost, and the therapeutic agent has an excellent therapeutic effect for chronic pulmonary disease with a low concentration of exosome by virtue of the thrombin treatment effect.

Abstract: An embodiment of the present invention provides a method for manufacturing multi-wall carbon nanotubes, the method comprising the steps of: (a) dissolving a metal precursor in a solvent to prepare a precursor solution; (b) perform thermal decomposition while spraying the precursor solution into a reactor, thereby forming a catalyst powder; and (c) introducing the catalyst powder into a fluidized-bed reactor heated to 600-900° C. and spraying a carbon-based gas and a carrier gas to synthesize multi-wall carbon nanotubes from the catalyst powder, wherein steps (a) to (c) are performed in a continuous type and wherein the catalyst powder contains metal components according to equation 1 below. <Equation 1> Ma:Mb=x:y, wherein Ma represents at least two metals selected from Fe, Ni, Co, Mn, Cr, Mo, V, W, Sn, and Cu; Mb represents at least one metal selected from Mg, Al, Si, and Zr; x and y each represent the molar ratio of Ma and Mb; and x+y=10, 2.0?x?7.5, and 2.5?y?8.0.

Abstract: Provided is a catalyst for manufacturing multi-wall carbon nanotubes, the catalyst including metal components according to <Equation> Ma:Mb=x:y, and having a hollow structure with a thickness of 0.5-10 ?m. In the above equation, Ma represents at least two metals selected from Fe, Ni, Co, Mn, Cr, Mo, V, W, Sn, and Cu; Mb represents at least one metal selected from Mg, Al, Si, and Zr; x and y each represent the molar ratio of Ma and Mb; and x+y=10, 2.0?x?7.5, and 2.5?y?8.0.

Abstract: Disclosed is a rubber composition containing main-chain benzoxazine, in which benzoxazine generates no harmful materials during vulcanization and can thus be used in lieu of a phenol novolac resin used as a resin component of a conventional rubber composition, and also in which the use of benzoxazine, especially main-chain benzoxazine having a high molecular weight, is capable of maintaining excellent mechanical properties and exhibiting high flexibility. The rubber composition of the invention can be utilized for a rubber product, especially a tire product.

Abstract: The present invention discloses various improvements to multi-user multiple-input multiple-output orthogonal frequency division multiplexing (MU-MIMO-OFDM) wireless communication systems. In one aspect there is disclosed an efficient and accurate channel estimation method and system using locally consecutive pilot sub-carriers. In another aspect there is disclosed an efficient channel feedback method and system by applying a discrete cosine transform to channel coefficients. In another aspect there is disclosed an efficient method and system to calculate a part of the channel inverse by interpolation. These aspects can be used in combination to improve the MU-MIMO-OFDM system.

Abstract: The present invention relates to a pharmaceutical composition for preventing or treating neonatal hypoxic ischemic encephalopathy (HIE), comprising thrombin-treated stem cells or exosomes derived therefrom as an active ingredient, and a method for producing the same. According to the present invention, the thrombin-treated stem cell or the exosome derived therefrom has an increased expression of growth factors, immunoregulatory factors, antioxidation factors, or regeneration factors compared to a group not treated with thrombin and also enhances a neuronal apoptosis inhibitory effect, and thus has an advantage in that the therapeutic effect thereof on neonatal hypoxic ischemic encephalopathy (HIE) is excellent.

Abstract: The present disclosure relates to a pharmaceutical composition comprising an exosome derived from a thrombin-treated stem cell as an effective ingredient for preventing or treating a skin wound, a pharmaceutical formulation containing the same, and a production method thereof. Being a cell-free agent, an exosome-based therapeutic agent of the present disclosure has a low risk of carcinogenesis and no problems of graft rejection as well as being little liable to occur microvascular obstruction. The agent, which is not a cell, but a material isolated from a cell, can be subjected to medication development into an off-the-shelf product which allows for the reduction of production cost. The agent has the advantage of exhibiting outstanding angiogenesis and skin wound treatment effects even at a low concentration of exosomes thanks to the thrombin treatment effect.

Abstract: Disclosed is a server including a transceiver, and a controller configured to receive, via the transceiver from a terminal, a first message including first information for requesting to share multimedia content stored in the server with at least one specified user and second information related to expiration of time for sharing the multimedia content, and based on the received first message, establish a condition for sharing the multimedia content, and transmit, via the transceiver to the at least one specified user, a second message notifying that the at least one specified user is allowed to access the multimedia content.

Abstract: The present disclosure relates to a composition for alleviating, preventing, or treating hyperoxia-induced lung injury, the composition including the WKYMVm peptide as an active ingredient. The composition has an effect of increasing FPR2 activation and ERK phosphorylation, and also has an effect of improving alveolarization and angiogenesis in hyperoxia-induced lung injury models, and thus the composition is anticipated to be usefully used for the alleviation, prevention, or treatment of hyperoxia-induced lung injury, particularly bronchopulmonary dysplasia.

Abstract: The present invention relates to a benzoxazine-based mixture and a use thereof and, more specifically, to a benzoxazine-based mixture and a use of a cured product in which the benzoxazine-based mixture is cured, wherein the benzoxazine-based mixture has high dielectric characteristics, heat resistant characteristics, and flame-retardant characteristics by comprising a benzoxazine ring in a molecular structure, and thus can be applied to a sealing material, a molding material, a template material, an adhesive, a material for an electric insulation paint, and the like, which are used for a copper clad laminate or an electronic part, used in a printed circuit board.

Abstract: Call processing methods and apparatuses are provided in a Session Initiation Protocol (SIP) based network involving at least one Push-to-Talk (PTT) over Cellular PoC client and a reception side PoC server. The reception side PoC server receives an INVITE request including a Manual Answer Override (MAO) indication from a transmission side PoC server. The MAO indication is for establishing an auto-answer mode in a pre-established session. If a reception side PoC client has the pre-established session with the reception side PoC server, the reception side PoC server sends an OK response to the transmission side PoC server in response to the INVITE request. The reception side PoC server sends a communication connection request including the MAO indication to the reception side PoC client. The MAO indication is used to determine that a transmission side PoC client is an authorized user with respect to the reception side PoC client.

Abstract: The present disclosure relates to a method for selecting a high efficacy stem cell for treating intraventricular hemorrhage in premature infants, and more particularly, to a method for selecting a high efficacy stem cell for treating intraventricular hemorrhage, including a step of measuring an expression level of a vascular endothelial growth factor (VEGF) and a high efficacy stem cell selected by the method.

Abstract: The present invention relates to a pharmaceutical composition for preventing or treating chronic pulmonary disease, a pharmaceutical formulation containing the same, and a method for preparing the same, the composition comprising as an active ingredient an exosome derived from thrombin-treated stem cells. The therapeutic agent is advantageous in that since the therapeutic agent is a cell-free preparation, the risk of carcinogenesis is low and there is no problem of transplant rejection reaction, and furthermore, there is no possibility of causing the occlusion of the microvascular system upon systemic administration, and since the therapeutic agent is a non-cell separating material, it is possible to develop a pharmaceutical agent as an off-the-shelf product, thereby reducing the manufacturing cost, and the therapeutic agent has an excellent therapeutic effect for chronic pulmonary disease with a low concentration of exosome by virtue of the thrombin treatment effect.

Abstract: The present invention relates to a thermosetting resin composition, and a prepreg and a printed circuit board using the same and, more particularly, to a thermosetting resin composition, and a prepreg and a printed circuit board using the same, wherein the thermosetting resin composition can be used for a printed circuit board which simultaneously has excellent low dielectric loss characteristics, good moisture absorption and heat resistance, low thermal expansion characteristics, and thermal stability.

Abstract: According to one aspect of the present invention, carbon nanotubes whose diameter, length, crystallinity, purity and the like are adjusted to predetermined ranges are added to a thermoplastic resin, and thus the thermoplastic resin can be provided with improved electrical conductivity.

Abstract: Systems and methods are disclosed for a simultaneous 3D T1 and B1+ mapping technique based on VFA imaging using a reference region VFA (RR-VFA) approach to eliminate the need for a separate B1+ mapping scan while imaging the prostate. The RR-VFA method assumes the existence of a “reference region” that is distributed throughout the volume of interest and is well characterized by a known T1 relaxation time. In particular, fat is generally selected as the reference region due to its distribution in the body. B1+ inhomogeneity is estimated in the fat tissue and interpolated over the entire volume of interest, thus eliminating the need for an additional scan.