Abstract: The present invention relates to a scanner having a flexible probe which is an apparatus capable of being utilized for an inspection on a weld zone of a general ferrite material and a stainless material and allowing an inspection to be performed on a fitting weld zone where it is difficult for a general phased array ultrasonic testing (PAUT) probe to approach.

Abstract: The present invention pertains to a method for culturing cord blood-derived natural killer cells using transformed T-cells. The method for culturing natural killer cells using transformed T-cells according to the present invention can effectively propagate and produce natural killer cells from a small amount of raw cells. In addition, the method can also improve the cell-killing ability of natural killer cells. Thus, the method for culturing natural killer cells using transformed T-cells according to the present invention can be usefully used to commercialize cell therapeutic agents. Moreover, natural killer cells produced by the culturing method of the present invention can be usefully used as a cell therapeutic agent.

Abstract: A volatile memory device and a nonvolatile memory device are provided. Provided is a plurality of gate electrodes and a plurality of insulating patterns alternately stacked on top of each other in a first direction, an information storage film formed along a sidewall of a trench, wherein the trench extends through the plurality of gate electrodes and the insulating patterns in the first direction, and a semiconductor pattern formed on the information storage film, wherein the semiconductor pattern is made of polycrystalline silicon composed of a first monocrystalline silicon and a second monocrystalline silicon, wherein a metal silicide is present in a grain boundary between the first monocrystalline silicon and the second monocrystalline silicon, wherein the metal silicide is absent in each of the first monocrystalline silicon and the second monocrystalline silicon except for the grain boundary therebetween.

Abstract: The invention relates to a UAV arrangement device based on machine learning for maximizing communication throughput, the UAV arrangement device including: a communication module unit that receives location information and communication demand information of a user and transmits UAV arrangement information; a user information unit that stores and analyzes the location information and the communication demand information of the user; a UAV information unit that stores basic UAV information including UAV communication throughput; and a clustering algorithm modeling unit that calculates a location at which communication throughput is maximized, with a clustering algorithm based on the location information and the communication demand information of the user.

Abstract: The invention relates to a UAV arrangement device based on machine learning for maximizing communication throughput, the UAV arrangement device including: a communication module unit that receives location information and communication demand information of a user and transmits UAV arrangement information; a user information unit that stores and analyzes the location information and the communication demand information of the user; a UAV information unit that stores basic UAV information including UAV communication throughput; and a clustering algorithm modeling unit that calculates a location at which communication throughput is maximized, with a clustering algorithm based on the location information and the communication demand information of the user.