Abstract: Disclosed herein are a metastructure having a zero elastic modulus zone, which can experience constant stress in a predetermined strain zone, and a method for designing the same. The metastructure includes a first unit and a second unit, wherein the first unit has a structure capable of buckling and has a stress-strain relation having a zone corresponding to a negative elastic modulus, the second unit is disposed adjacent to the first unit and has a stress-strain relation having a zone corresponding to a positive elastic modulus, and the metastructure has zero elastic modulus in a predetermined target strain zone through synthesis of the negative elastic modulus of the first unit with the positive elastic modulus of the second unit.

Abstract: One embodiment of the present application provides a polymer dispersed liquid crystal display including a first electrode, a second electrode on the first electrode, and a PDLC layer placed between the first electrode and the second electrode, the PDLC layer includes a liquid crystal droplet with a size in the range of 0.8 to 1.5 ?m, and the PDLC layer has a thickness in the range of 15 to 25 ?m.

Abstract: One embodiment of the present application provide a polymer dispersed liquid crystal display including a first electrode; a second electrode on the first electrode; and a PDLC layer disposed between the first electrode and the second electrode; wherein the PDLC layer includes a liquid crystal droplet and a polymer surrounding the liquid crystal droplet, the liquid crystal droplet has a size in the range of 0.8 to 1.5 ?m, the PDLC layer has a thickness in the range of 15 to 25 ?m, and wherein the polymer dispersed liquid crystal display has multiple domains driven individually.

Abstract: An ophthalmic treatment apparatus includes a display unit for displaying an image of a patient's eyeground, a treatment region setting unit for setting a treatment region on the basis of the image of the patient's eyeground, a treatment beam radiating unit for radiating a treatment beam to the set treatment region, a radiation density setting unit for setting radiation density of the treatment beam radiated to the set treatment region, and a control unit for controlling the treatment beam radiating unit so as to radiate the treatment beam onto the set treatment region on the basis of the set density. The treatment region setting unit divides the set treatment region into a plurality of sub-regions based on a patient's eyeground condition. The radiation density setting unit sets the radiation density of the treatment beam for each of the plurality of sub-regions.

Abstract: An artificial neural network computation acceleration apparatus for distributed processing includes an external main memory for storing input data and synapse weights for input neurons; an internal buffer memory for storing a synapse weight and input data required for each cycle constituting the artificial neural network computation; a DMA module for directly transmitting/receiving data to/from the external main memory and the internal buffer memory; and a general-use communication media block capable of transmitting/receiving the input data and the synapse weights for the input neurons and a result of the computation performed by the neural network computation device to/from another acceleration apparatus physically connected regardless of the type of an integrated circuit.