Abstract: Disclosed are an image encoding method using a skip mode and a device using the method. The image encoding method may comprise the steps of: judging whether there is residual block data of a prediction target block on the basis of predetermined data indicating whether residual block data has been encoded; and, if there is residual block data, restoring the prediction target block on the basis of the residual block data and an intra-screen predictive value of the prediction target block. Consequently, encoding and decoding efficiency can be increased by carrying out the encoding and decoding of screen residual data only for prediction target blocks where there is a need for a residual data block in accordance with screen similarity.

Abstract: A photovoltaic power generation system includes a plurality of solar cell strings each including a plurality of photovoltaic PV modules, a plurality of string optimizers each connected to an output terminal of each of the plurality of solar cell strings, an inverter configured to automatically track an MPP from an equal voltage output from each of the plurality of string optimizers, inverts a result thereof into AC power, and links the AC power to the system, wherein the string optimizer includes an input processor configured to receive input of generated power from any first solar cell string, a booster configured to boost or bypass generated power input through the input processor, and output the generated power, an output processor configured to output an output of the booster to a back end, and an MCU configured to perform MPPT in units of strings to control an operation of the booster.

Abstract: The present invention relates to a method for producing marine algae-derived agarotriose, and a use thereof as a prebiotic. More specifically, the present invention investigates the characteristics of agarotriose as a prebiotic which is selectively metabolized by probiotic microorganisms, thereby enabling agarotriose to be used as an anti-cancer or anti-inflammatory agent in the fields of food and pharmaceuticals, and enabling agarotriose to be obtained at high yield through efficient purification with minimal loss after enzymatic hydrolysis of a red algae-derived polysaccharide without pre-treatment.

Abstract: The present disclosure discloses metal oxide nanoparticle ink, a method of preparing the same, a metal oxide nanoparticle thin film manufactured using the same, and a photoelectric device using the same. The method of preparing metal oxide nanoparticle ink according to an embodiment of the present disclosure includes a step of, using a ligand solution including a metal oxide and an organic ligand, synthesizing a first nanoparticle that is a metal oxide nanoparticle surrounded with the organic ligand; a step of preparing a dispersion solution by dispersing the first nanoparticle in a solvent; a step of preparing a second nanoparticle by mixing the dispersion solution and a pH-adjusted alcohol solvent and then performing ultrasonication treatment to remove the organic ligand surrounding the first nanoparticle; and a step of preparing metal oxide nanoparticle ink by dispersing the second nanoparticle in a dispersion solvent.

Abstract: An operating method of a memory controller may include receiving a state analysis request of a memory from a host, determining a fragment state of the memory, determining a lifespan situation of the memory, generating an analysis result indicating whether a garbage collection is restricted, on the basis of the fragment state and the lifespan situation, and providing the analysis results to the host.

Abstract: The present disclosure discloses metal oxide nanoparticle ink, a method of preparing the same, a metal oxide nanoparticle thin film manufactured using the same, and a photoelectric device using the same. The method of preparing metal oxide nanoparticle ink according to an embodiment of the present disclosure includes a step of, using a ligand solution including a metal oxide and an organic ligand, synthesizing a first nanoparticle that is a metal oxide nanoparticle surrounded with the organic ligand; a step of preparing a dispersion solution by dispersing the first nanoparticle in a solvent; a step of preparing a second nanoparticle by mixing the dispersion solution and a pH-adjusted alcohol solvent and then performing ultrasonication treatment to remove the organic ligand surrounding the first nanoparticle; and a step of preparing metal oxide nanoparticle ink by dispersing the second nanoparticle in a dispersion solvent.

Abstract: The present application relates to a porous body quality inspection apparatus and a method for inspecting quality of a porous body, and according to one aspect of the present application, there is provided a porous body quality inspection apparatus comprising a contact resistance measuring part of a porous body with a gas diffusion layer, a pressurizing part for pressurizing a pressure-sensitive discoloration base material on the porous body, an image mapping part for calculating a contact area between the pressure-sensitive discoloration base material and the porous body, a transporting part for transporting the porous body and the pressure-sensitive discoloration base material, and an operation part for performing an operation of an interfacial contact resistance between the porous body and the gas diffusion layer.

Abstract: The present invention relates to a fuel cell and a fuel cell stack comprising the same, and according to one aspect of the present invention, there is provided a fuel cell comprising a membrane-electrode assembly having a first surface and a second surface opposite to the first surface, wherein an anode electrode and a cathode electrode are each disposed on the first surface; an end plate disposed apart at a predetermined interval on the second surface; a first gas diffusion layer disposed on the anode electrode; a second gas diffusion layer disposed on the cathode electrode; a first separating plate disposed on the first gas diffusion layer and having a plurality of flow channels; and a second separating plate disposed on the second gas diffusion layer and having a plurality of flow channels.

Abstract: The present invention relates to a method for producing marine algae-derived agarotriose, and a use thereof as a prebiotic. More specifically, the present invention investigates the characteristics of agarotriose as a prebiotic which is selectively metabolized by probiotic microorganisms, thereby enabling agarotriose to be used as an anti-cancer or anti-inflammatory agent in the fields of food and pharmaceuticals, and enabling agarotriose to be obtained at high yield through efficient purification with minimal loss after enzymatic hydrolysis of a red algae-derived polysaccharide without pre-treatment.

Abstract: The present invention relates to a method for producing marine algae-derived agarotriose, and a use thereof as a prebiotic. More specifically, the present invention investigates the characteristics of agarotriose as a prebiotic which is selectively metabolized by probiotic microorganisms, thereby enabling agarotriose to be used as an anti-cancer or anti-inflammatory agent in the fields of food and pharmaceuticals, and enabling agarotriose to be obtained at high yield through efficient purification with minimal loss after enzymatic hydrolysis of a red algae-derived polysaccharide without pre-treatment.

Abstract: A method of controlling discard operations is performed in a system that includes a host device and a data storage device. The method includes providing a shared discard bitmap accessed commonly by the host device and data storage device. The shared discard bitmap includes discard bits in one-to-one correspondence with target sectors of a nonvolatile memory device in the data storage device. The method also includes setting bit values of the discard bits stored in the shared discard bitmap, the bit values indicating whether data stored in each of the target sectors are discardable. An asynchronous discard operation may then be performed with respect to the target sectors based on the bit values of the discard bits stored in the shared discard bitmap.

Abstract: An operating method of a memory controller may include receiving a state analysis request of a memory from a host, determining a fragment state of the memory, determining a lifespan situation of the memory, generating an analysis result indicating whether a garbage collection is restricted, on the basis of the fragment state and the lifespan situation, and providing the analysis results to the host.

Abstract: Provided are a piezoluminescence structure, a piezoelectric structure, a manufacturing method thereof, and a high-sensitivity pressure sensor using the same. The piezoelectric structure includes: a plurality of perovskite material layers each including a material having an AnBnO3n perovskite structure; and interlayers inserted between the plurality of perovskite material layers and including A*O which is a metal oxide having reaction resistance to CO2. Here, A and A* are different elements and are one of an alkaline earth metal element, an alkali metal element, a lanthanide element, and a post-transition metal element, B is a transition metal element, O is an oxygen element, and n is a positive (+) integer. The piezoelectric structure may be a piezoluminescence structure.

Abstract: A separator for a fuel cell having a flow channel including a transverse channel and a longitudinal channel formed therein, the transverse channel having a pair of opposed side walls, and a first pattern and a second pattern alternately spaced and arranged in the transverse channel is provided. Each of the first pattern and the second pattern is a column-shaped three-dimensional structure having a polygonal transverse section. The first pattern and the second pattern are arranged in the transverse channel so as to have a shape of the transverse sections being rotated 180° relative to each other. First spacing distances from each of the first pattern and the second pattern to a first side wall of the pair of opposed side walls of the transverse channel are different.

Abstract: The present invention relates to a novel method for purifying 3,6-anhydro-L-galactose by using microorganisms and provides an effect of improving the production yield of 3,6-anhydro-L-galactose by using microorganisms during purification after enzymatic hydrolysis of agarose or agar.

Abstract: The present invention relates to a piezoelectric structure, a method of fabricating the same, and a pressure sensor using the same. A piezoelectric structure comprises perovskite structure layers including a material having an ABO3 perovskite structure and an interlayer including a metal oxide A*O interposed between the perovskite structure layers. A or A* is one of an alkaline earth metal element, an alkali metal element, a lanthanum group element, and a post-transition metal element, B is a transition metal element, and O is an oxygen element.

Abstract: The present disclosure discloses metal oxide nanoparticle ink, a method of preparing the same, a metal oxide nanoparticle thin film manufactured using the same, and a photoelectric device using the same. The method of preparing metal oxide nanoparticle ink according to an embodiment of the present disclosure includes a step of, using a ligand solution including a metal oxide and an organic ligand, synthesizing a first nanoparticle that is a metal oxide nanoparticle surrounded with the organic ligand; a step of preparing a dispersion solution by dispersing the first nanoparticle in a solvent; a step of preparing a second nanoparticle by mixing the dispersion solution and a pH-adjusted alcohol solvent and then performing ultrasonication treatment to remove the organic ligand surrounding the first nanoparticle; and a step of preparing metal oxide nanoparticle ink by dispersing the second nanoparticle in a dispersion solvent.

Abstract: The present invention relates to a fuel cell and a fuel cell stack comprising the same, and according to one aspect of the present invention, there is provided a fuel cell comprising a membrane-electrode assembly having a first surface and a second surface opposite to the first surface, wherein an anode electrode and a cathode electrode are each disposed on the first surface; an end plate disposed apart at a predetermined interval on the second surface; a first gas diffusion layer disposed on the anode electrode; a second gas diffusion layer disposed on the cathode electrode; a first separating plate disposed on the first gas diffusion layer and having a plurality of flow channels; and a second separating plate disposed on the second gas diffusion layer and having a plurality of flow channels.

Abstract: A separator and a fuel cell stack, the separator including a plurality of convex portions and a plurality of concave portions which are sequentially provided along a first direction, the convex portions having first openings on top surfaces at predetermined intervals along a second direction orthogonal to the first direction and the first openings of two adjacent convex portions are each provided so as not to be positioned coaxially based on a virtual first line parallel to the first direction.

Abstract: The present disclosure discloses a method of manufacturing a multilayer perovskite structure, and a multilayer perovskite structure and solar cell manufactured using the same. The method of manufacturing a multilayer perovskite structure according to an embodiment of the present disclosure includes a step of forming a first perovskite layer using a compound including a first perovskite precursor on a base substrate; a step of forming a second perovskite layer using a compound including a second perovskite precursor on a donor substrate; and a step of laminating the first and second perovskite layers so that the first and second perovskite layers contact each other and then applying heat or pressure to form a multilayer perovskite structure.