Abstract: A switch apparatus, includes: a base module including a base case, and a moving magnet movably mounted in the base case; and a manipulation module including a manipulation case, and a first magnet fixedly mounted in the manipulation case, wherein the moving magnet moves between a hold position and a releasable position, the hold position refers to a position in which the manipulation module is held onto the base module as an attractive force acts between the moving magnet and the first magnet, and the releasable position refers to a position in which the manipulation module is releasable from the base module as a repulsive force acts between the moving magnet and the first magnet.

Abstract: Display control devices and methods are provided. Vital functions of a person are detected using a radar circuit, and power consumption of a display is controlled based on the detected vital functions.

Abstract: Proposed is a stopcock that enables natural injection of a drug and prevents backflow of a drug injected in another direction on a body. The stopcock includes: a body formed in a passage shape connecting a drug solution injection pipe and a supply pipe to each other; and a backflow prevention unit having a first end coupled to a side of the body between the drug solution injection pipe and the supply pipe and a second end extending toward an inside of the body to isolate the drug solution injection pipe and the supply pipe from each other, in which the second end of the backflow prevention unit bends toward the inside of the body and guides movement of a drug when the drug is injected through the drug solution injection pipe, and elastically moves to an initial position when injection of the drug is stopped.

Abstract: A device includes: a millimeter-wave radar sensor circuit configured to generate N virtual channels of sensed data, where N is an integer number greater than one; and a processor configured to: generate a 2D radar image of a surface in a field of view of the millimeter-wave radar sensor circuit based on sensed data from the N virtual channels of sensed data, where the 2D radar image includes azimuth and range information, generate a multi-dimensional data structure based on the 2D radar image using a transform function, compare the multi-dimensional data structure with a reference multi-dimensional data structure, and determine whether liquid is present in the field of view of the millimeter-wave radar sensor circuit based on comparing the multi-dimensional data structure with the reference multi-dimensional data structure.

Abstract: Display control devices and methods are provided. Vital functions of a person are detected using a radar circuit, and power consumption of a display is controlled based on the detected vital functions.

Abstract: A device includes: a millimeter-wave radar sensor circuit configured to generate N virtual channels of sensed data, where N is an integer number greater than one; and a processor configured to: generate a 2D radar image of a surface in a field of view of the millimeter-wave radar sensor circuit based on sensed data from the N virtual channels of sensed data, where the 2D radar image includes azimuth and range information, generate a multi-dimensional data structure based on the 2D radar image using a transform function, compare the multi-dimensional data structure with a reference multi-dimensional data structure, and determine whether liquid is present in the field of view of the millimeter-wave radar sensor circuit based on comparing the multi-dimensional data structure with the reference multi-dimensional data structure.

Abstract: A learning situation determining method and apparatus is disclosed. The learning situation determining method includes collecting psychophysiological response information of a learner on a first learning image, collecting stimulated recall response information of the learner based on a stimulated recall of the learner in response to a second learning image including a same learning content as the first learning image, determining cognitive load in the leaner that is recalled in each learning interval of the second learning image based on the psychophysiological response information and the stimulated recall response information. Alternatively, the learning situation determining method includes determining cognitive load in a learner learning a learning image for each learning interval of the learning image using psychophysiological response information of the learner based on prior knowledge possessed by the learner and task complexity of the learning image.

Abstract: Disclosed is a liquid crystal display (LCD) with black matrixes of low reflectivity capable of reducing the reflection of back light. The black matrix of the disclosed LCD includes a photoshield layer formed on the back surface of a front substrate, and at least one internal photo-interference layer formed over the photoshield layer. The internal photo-interference layer has a refraction index different from that of the photoshield layer. The internal photo-interference layer has a double-layer structure consisting of a chromium nitride layer and a chromium oxide layer.