Abstract: The present disclosure relates to polyimide and a preparation method thereof. The polyimide according to an embodiment of the present disclosure comprises: silica having pores; and a fluorinated alkyl chain attached to the surface of the silica having pores, and is prepared by mixing a dispersion solution comprising the silica having pores and an organic solution comprising a polyimide precursor. Accordingly, hygroscopicity is reduced, and dispersibility can be enhanced.

Abstract: A method for controlling a mobile communication device using a user's distance specifying algorithm, the method comprises a first process of receiving an input image from a camera to generate first data; a second process of determining whether there is a candidate group that can be determined as a face using the first data and second data including a user's distance information; a third process of extracting, if there is a candidate group that can be determined as a face, from a plurality of third data including location information of the candidate group, fourth data having a minimum distance between a center of the first data and a center of the third data; and a fourth process of comparing the fourth data with a predetermined user's distance to determine whether it has a value within a tolerance range.

Abstract: Systems and methods for detecting eye information are described. According to one embodiment, a detecting device includes a determination unit, a generation unit, and a detection unit. The determination unit is configured to determine whether a user wears glasses from an input image by using a first neural network including a plurality of filters. The generation unit is configured to generate a face image in which the glasses are removed from the input image by using a learned generator when a glasses-wearing signal is received from the determination unit. The detection unit is configured to generate an eye image by receiving the input image from the determination unit or receiving the face image from the generation unit and detect a pupil from the eye image using a second neural network including a plurality of filters.

Abstract: The electronic apparatus includes a memory stored with a multiple light field unit (LFU) structure in which a plurality of light fields is arranged in a lattice structure, and a processor configured to, based on a view position within the lattice structure being determined, generate a 360-degree image based on the view position by using the multiple LFU structure, and the processor is configured to select an LFU to which the view position belongs from among the multiple LFU structure, allocate a rendering field-of-view (FOV) in predetermined degrees based on the view position, generate a plurality of view images based on a plurality of light fields comprising the selected LFU and the allocated FOV, and generate the 360-degree image by incorporating the generated plurality of view images.

Abstract: A liquid crystal based optical deflector includes a light source array configured to generate a laser beam, an optical deflector including a plurality of liquid crystal cells, which transmit the laser beam, the optical deflector configured to deflect a transmission path of the laser beam depending on a gradually increased voltage profile applied to the plurality of liquid crystal cells, an optics assembly configured to scan the laser beam deflected by the optical defector in a horizontal direction, and a controller configured to adjust the voltage profile applied to the plurality of liquid crystal cells.

Abstract: There is provided a method for determining dementia risk factors by a server using deep learning. In this instance, the method for determining dementia risk factors includes acquiring biometric information from each subject corresponding to a first control group through a wearable device, acquiring measurement information for each subject corresponding to the first control group, deriving a first dementia risk factor based on the biometric information and the measurement information for each subject, and deriving a second dementia risk factor related to the first dementia risk factor via deep learning performed based on the biometric information related to the first dementia risk factor and control group information.

Abstract: A pupil detection device includes: a filter weight learner configured to generate a target image on the basis of pupil coordinate data acquired from a learning image and learn weights of a plurality of filters in order to generate a filtered image, by filtering the learning image using the plurality of filters, that is within a predetermined reference range of the target image; a split image generator configured to generate a pupil region split image for an input image using the plurality of filters having the learned weights; and a pupil coordinate detector configured to remove noise of the pupil region split image, select at least one of a plurality of pixels from which noise is removed, and detect pupil coordinates.

Abstract: The present invention provides a lithium ion conductive composite solid electrolyte including an oxide-based crystalline solid electrolyte and a sulfide-based solid electrolyte, wherein the oxide-based solid electrolyte is a garnet-type solid electrolyte represented by a general formula of Li7-3y-zAlyLa3Zr2-zMzO12, wherein M is at least one element selected from the group consisting of niobium (Nb), tantalum (Ta), and tungsten (W), y satisfies 0?y?1, and z satisfies 0?z<2, the sulfide-based solid electrolyte is an argyrodite-based ceramic represented by a general formula of Li7-aPS6-aXa, wherein X is at least one element selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I), and a satisfies 0?a?2, and the oxide-based solid electrolyte and the sulfide-based solid electrolyte are mixed in a weight ratio of 5.1:4.9 to 8:2.

Abstract: Provided are a resist composition and a method of forming a pattern using the same. According to the inventive concept, the resist composition may include a copolymer represented by Formula 1 below.

Abstract: The present invention relates to a method of preparing ultra-pure silicon carbide in which a super-porous spherical silica aerogel is used as a silica raw material. By preparing the silica aerogel particles using low-cost water glass, a reaction area with respect to a carbon raw material is increased to enable low-temperature synthesis of silicon carbide, the size and shape of silicon carbide powder may be uniformly controlled to prepare ultra-pure silicon carbide, and economic efficiency and productivity of the silicon carbide synthesis may be improved. Thus, it is expected that the silicon carbide powder prepared by the preparation method of the present invention may be provided as an optimized raw material for the preparation of silicon carbide sintered body and single crystal (ingot).

Abstract: Approaches presented herein enable implementation of augmented reality in a smart glasses device. More specifically, two-dimensional (2-D) image data of a real-world object is collected from a 2-D camera of the smart glasses device. From the collected 2-D image data, 2-D coordinate data is generated. Based on location and rotation data of the smart glasses device and 2-D depth information from a viewing angle of the smart glasses device, three-dimensional (3-D) coordinates are generated from the generated 2-D coordinate data. An augmented object is displayed, on a holographic display of the smart glasses device, at an apparent location of the real-world object utilizing the 3-D coordinates.

Abstract: The present invention provides an optical irradiation apparatus including: a dual laser light source unit which simultaneously or selectively outputs multiple light sources created with different outputs; an optical fiber which is connected to the dual laser light source unit, receives the light outputted from the dual laser light source unit, and emits the received light through an embossed end surface; and an inflatable balloon catheter which is formed to surround the embossed end surface of the optical fiber and expands constricted tissue. With the present invention, it is possible to effectively treat constricted tissue during a procedure of performing an anticancer therapy on entire human bodies with various types of cancers, and it is possible to mitigate patient's pain by reducing a relapse rate of stenosis after the photothermal therapy.

Abstract: The present invention provides an optical irradiation apparatus including: a dual laser light source unit which simultaneously or selectively outputs multiple light sources created with different outputs; an optical fiber which is connected to the dual laser light source unit, receives the light outputted from the dual laser light source unit, and emits the received light through an embossed end surface; and an inflatable balloon catheter which is formed to surround the embossed end surface of the optical fiber and expands constricted tissue. With the present invention, it is possible to effectively treat constricted tissue during a procedure of performing an anticancer therapy on entire human bodies with various types of cancers, and it is possible to mitigate patient's pain by reducing a relapse rate of stenosis after the photothermal therapy.

Abstract: The present invention relates to a forming material for three-dimensional (3D) printing, a forming method for 3D printing, and a formed object, wherein, while being based on an amorphous glass powder shaped irregularly, the forming material for 3D printing ensures excellent flowability and sinterability such that it enables the formation of high-quality products at high speed. The forming material for 3D printing consists of a parent glass powder in the form of an unmelted powder irregularly shaped by crushing amorphous glass; and a spherical nanopowder that has an average particle diameter equal to or less than 1/50th of the average particle diameter of the parent glass powder and is mixed in such a way that it can be disposed on a surface of the parent glass powder to enhance the flowability of the irregularly shaped parent glass powder during the formation of an object by 3D printing.

Abstract: A fastening tool system for fastening a component part by using a supplied power includes: a camera portion mounted on a fastening tool to photograph a fastening portion of the component part; an image input portion for inputting an image photographed from the camera portion when a distance with the fastening portion measured through a distance measurement sensor is within a predetermined distance; a communication portion for transmitting data by wireless communication; and a fastening portion determining portion that recognizes the fastening portion through machine learning algorithm-based image classification work for an input image of the camera portion and sets a torque value matched with the recognized fastening portion.

Abstract: A multi output DC/DC converter includes a transformer having a primary side winding connected to an input side and a secondary side winding connected to an output side; a rectifying diode for rectifying an output of the secondary side winding; an output inductor having a first end connected to the rectifying diode; and a first output switching element and a second output switching element each having first ends connected to a second end of the output inductor, where a second end of the first output switching element and a second end of the second output switching element become first and second output stages outputting different voltages, respectively.

Abstract: An energy harvesting system based on reverse electro wetting on a dielectric includes: a dielectric material layer molded with a dielectric material in a panel shape and including an upper end and a lower end; and an electrode layer including a plurality of electrodes coupled to a lower surface of the dielectric material layer. In particular, the upper end of the dielectric material layer is located higher than the lower end and allows a liquid drop to flow from the upper end to the lower end, and the dielectric material layer generates dielectric polarization in the dielectric material layer and continuously varies a flow rate of the liquid drop between the upper end and the lower end of the dielectric material layer. The plurality of electrodes are disposed to be spaced apart from one another in a direction from the upper end to the lower end.

Abstract: The present disclosure provides an aerogel-containing composition including an aerogel, a water-soluble binder, a foaming agent, and a mixture of water and a polar organic solvent as a solvent, and an insulation blanket prepared using the same. In the aerogel-containing composition, the aerogel is uniformly dispersed in the composition, and when preparing a blanket, an insulation blanket having low thermal conductivity and flexibility of low density is prepared without concern of shrinkage of the substrate for a blanket and detachment of the aerogel during a drying process.

Abstract: Approaches presented herein enable automatic creation of metadata for contents of a video. More specifically, a video and a script corresponding to the video are obtained. A location corresponding to an object in at least one shot of the video is extracted. This at least one shot includes a series of adjacent frames. The extracted location is saved as an annotation area in an annotation knowledge base. An element of a plot of the video is extracted from the script. This element of the plot is derived from content of the video in combination with content of the script. The extracted element of the plot is saved in a narrative knowledge base.