Abstract: An apparatus for an aerial vehicle is introduced. The apparatus may comprise a camera and a processor coupled to the camera. During flight, the processor may obtain an image from the camera, transform it into a bird-eye view image, and match it with digital surface model (DSM) data. Based on this matched image, the processor may generate a depth map image. Further, the processor may utilize the depth map image to produce a signal for controlling the operation of the aerial vehicle.

Abstract: Provided is an ultrathick steel material for a flange having excellent strength and low temperature impact toughness, and a manufacturing method therefor. The steel material of the present disclosure comprises, in weight %, C: 0.05-0.2%, Si: 0.05-0.5%, Mn: 1.0-2.0%, Al: 0.005-0.1%, P: 0.01% or less, S: 0.015% or less, Nb: 0.005-0.07%, V: 0.001-0.3%, Ti: 0.001-0.05%, Cr: 0.01-0.3%, Mo: 0.01-0.12%, Cu: 0.01-0.6%, Ni: 0.05-4.0%, Ca: 0.0005-0.004%, and the balance being Fe and other unavoidable impurities, wherein the steel material has a microstructure having a prior austenite crystallite grain size of 35 ?m or less and including 90 area % or more of at least one of bainite and martensite, and the remainder of ferrite or pearlite.

Abstract: The present disclosure relates to a machine learning-based resource allocation method and device in a wireless communication system. A method of performing resource allocation in a wireless communication system according to an embodiment of the present disclosure may include acquiring DNN output information through a deep neural network (DNN) based on input H corresponding to wireless channel-related information; acquiring resource allocation matrix X having a form of a permutation matrix through an approximation operation to a doubly stochastic matrix based on input A corresponding to the DNN output information; and allocating M resource elements belonging to a set of first type resources to N resource elements belonging to a set of second type resources based on the resource allocation matrix.

Abstract: The present invention relates to a thick steel suitable for use as a line pipe, a sour-resistant material, or the like and, more specifically, to a high-strength steel having excellent resistance to sulfide stress cracking, and a method for manufacturing same.

Abstract: A current collector for an anode-free all-solid-state battery is capable of effectively increasing a physical contact area between an electrolyte and a current collector and effectively reducing interfacial voids between the electrolyte and the current collector. In addition, an anode-free all-solid-state battery capable of stably increasing cycle life without overvoltage is provided.

Abstract: A gear system for a mobile object may include: a first shaft unit configured to adjust a driving direction of a fuselage; a second shaft unit coupled to the first shaft unit and configured to retract the first shaft unit into the fuselage or extend the first shaft unit, retracted into the fuselage, from the fuselage; a driver configured to supply driving force through which the first shaft unit and the second shaft unit can move; and a power transmission unit configured to selectively transmit the driving force of the driver to one of the first shaft unit and the second shaft unit by coupling the driver to one of the first shaft unit and the second shaft unit.

Abstract: The present invention relates to a steel material for pressure vessels, offshore structures and the like and, more specifically, to a high-strength steel material having excellent low-temperature strain aging impact properties and a method for manufacturing same.

Abstract: A system for controlling an aerial vehicle includes an autonomous control computer that detects a runway to estimate a state information error of the aerial vehicle, and a flight control computer that obtains state information of the aerial vehicle and transmits a determined flight mode of the aerial vehicle to the autonomous control computer when the flight mode of the aerial vehicle is determined as an autonomous flight mode based on the state information of the aerial vehicle.

Abstract: Disclosed are a flight control apparatus for an aerial vehicle and a method of operating the same. The flight control apparatus includes a communication circuit that establishes communication with a control system and receive first information related to operation information for controlling flight of an aerial vehicle from the control system, a sensor that obtains second information related to flight data of the aerial vehicle, a memory that stores a prediction model for predicting a flight state of the aerial vehicle based on the first information and the second information, and a flight parameter estimation value including at least one of a landing gear spring coefficient, an aerodynamic coefficient, a friction coefficient, an control surface effect, a thrust coefficient, or inertia moment or any combination thereof or any combination thereof, and a processor that is electrically connected to the communication circuit, the sensor, and the memory.

Abstract: Provided according to one preferred aspect of the present invention are austenitic steel material having superb abrasion resistance and toughness, and a method for producing the austenite steel material. The austenitic steel material having superb abrasion resistance and toughness according to one preferred aspect of the present invention comprises, in wt %, 0.6-1.9% carbon (C); 12-22% manganese (Mn); 5% or lower (excluding 0%) chromium (Cr); 5% or lower (excluding 0%) copper (Cu); 0.5% or lower (excluding 0%) aluminum (Al); 1.0% or lower (excluding 0%) silicon (Si); 0.1% or lower (including 0%) phosphorous (P); 0.02% or lower (including 0%) sulfur (S); and the rest in Fe and unavoidable impurities, and has the microstructure comprising, by surface area fraction, 97% or higher (including 100%) austenite and 3% or lower (including 0%) carbide.

Abstract: A machine tool having a separately replaceable tool post is provided. The machine tool includes supports that are facing each other with an axis line of a main axis in an axial direction therebetween; a rotation tool post detachably connected on one of the supports and rotatable with respect to a first direction perpendicular to the axis line; a fastening member detachably connecting the rotation tool post on the one of the supports, wherein the rotation tool post includes: a rotation unit configured to rotate in the first direction on the one of the supports; an upper fastening unit at an upper portion of the rotation unit, and detachably fastened to the one of the supports; and a lower fastening unit at a lower portion of the rotation unit, and detachably fastened to the one of the supports so that the rotation unit is rotatable.

Abstract: The present invention is to provide a steel plate with physical properties superior to existing steel plates used in fields such as industrial machinery, especially excellent low-temperature impact toughness along with high strength and high hardness, and a method for manufacturing same.

Abstract: The present invention relates to a thick steel suitable for use as a line pipe, a sour-resistant material, or the like and, more specifically, to a high-strength steel having excellent resistance to sulfide stress cracking, and a method for manufacturing same.

Abstract: Provided are an austenitic steel having excellent machinability and ultra-low temperature toughness in a weld heat-affected zone including 15 wt % to 35 wt % of manganese (Mn), carbon (C) satisfying 23.6C+Mn?28 and 33.5C?Mn?23, 5 wt % or less (excluding 0 wt %) of copper (Cu), chromium (Cr) satisfying 28.5C+4.4Cr?57 (excluding 0 wt %), and iron (Fe) as well as other unavoidable impurities as a remainder, wherein a Charpy impact value of a weld heat-affected zone at ?196° C. is 41 J or more, and a method of manufacturing the steel. According to the present invention, a low-cost ultra-low temperature steel may be obtained, a stable austenite phase may be formed at low temperature, carbide formation may be effectively suppressed, and a structural steel having excellent machinability and ultra-low temperature toughness in a weld heat-affected zone may be provided.

Abstract: Provided according to one preferred aspect of the present invention are austenitic steel material having superb abrasion resistance and toughness, and a method for producing the austenite steel material. The austenitic steel material having superb abrasion resistance and toughness according to one preferred aspect of the present invention comprises, in wt %, 0.6-1.9% carbon (C); 12-22% manganese (Mn); 5% or lower (excluding 0%) chromium (Cr); 5% or lower (excluding 0%) copper (Cu); 0.5% or lower (excluding 0%) aluminum (Al); 1.0% or lower (excluding 0%) silicon (Si); 0.1% or lower (including 0%) phosphorous (P); 0.02% or lower (including 0%) sulfur (S); and the rest in Fe and unavoidable impurities, and has the microstructure comprising, by surface area fraction, 97% or higher (including 100%) austenite and 3% or lower (including 0%) carbide.

Abstract: The present invention relates to a steel material for pressure vessels, offshore structures and the like and, more specifically, to a high-strength steel material having excellent low-temperature strain aging impact properties and a method for manufacturing same.

Abstract: The present invention relates to a high strength austenitic-based steel with remarkable toughness of a welding heat-affected zone and a preparation method therefor. One embodiment of the present invention provides: a high strength austenitic-based steel with remarkable toughness of a welding heat-affected zone, comprising 0.8-1.5 wt % of C, 15-22 wt % of Mn, 5 wt % or less of Cr (except 0), and the balance of Fe and other inevitable impurities, and further comprising at least one of the following (a) and (b), wherein the microstructure of a welding heat-affected zone comprises 90% or more of austenite by volume fraction; and a preparation method therefor. (a) Mo: 0.1-1% and B: 0.001-0.02% (b) Ti: 0.01-0.3% and N: 0.003-0.1%.

Abstract: A high-manganese wear-resistant steel having excellent weldability comprises 5 to 15 wt % of Mn, 16?33.5C+Mn?30 of C, 0.05 to 1.0 wt % of Si, and a balance of Fe and other inevitable impurities. The microstructure thereof includes martensite as a major component, and 5% to 40% of residual austenite by area fraction.

Abstract: Provided is a wear resistant steel including 2.6 wt % to 4.5 wt % of manganese (Mn), carbon (C) satisfying (6-Mn)/50?C?(10-Mn)/50, 0.05 wt % to 1.0 wt % of silicon (Si), and iron (Fe) as well as other unavoidable impurities as a remainder, wherein a Brinell hardness of a surface portion is in a range of 360 to 440. The wear resistant steel further includes at least one component selected from the group consisting of 0.1 wt % or less (excluding 0 wt %) of niobium (Nb), 0.1 wt % or less (excluding 0 wt %) of vanadium (V), 0.1 wt % or less (excluding 0 wt %) of titanium (Ti), and 0.02 wt % or less (excluding 0 wt %) of boron (B) to complement the performance thereof. The wear resistant steel is characterized in that a microstructure includes martensite in an amount of 90% or more, and an average packet diameter of the martensite is 20 ?m or less.

Abstract: There are provided an expandable high-strength steel material and an expanded high-strength steel pipe having excellent expandability and collapse resistance, and methods for manufacturing the expandable high-strength steel material and the expanded high-strength steel pipe. The expandable high-strength steel material including, by weight, manganese (Mn): 12% to 18%, carbon (C): 0.3% to 0.6%, and a balance of iron (Fe) and inevitable impurities, wherein the carbon (C) and the manganese (Mn) satisfy the following condition: 23?35.5C+Mn?38. Before being expanded, the expandable high-strength steel material has an austenite single phase microstructure, and after being expanded, the expandable high-strength steel material has a microstructure including 5 area % to 50 area % martensite and 50 area % to 95 area % austenite.