Abstract: Disclosed are a magnetic particle and a security ink containing the same. The magnetic particle includes a magnetic core, and a metal coating layer formed outside the magnetic core. The magnetic particle has a surface roughness (Ra) of 0.15 ?m or less. The magnetic particle according to the present invention is suitable for application to a security ink because an abnormal increase in particle size does not occur after the metal coating layer is formed.

Abstract: According to one embodiment of the present disclosure, a speed estimation apparatus may include a converter configured to convert a vibration signal acquired from a gear box into time-frequency representation (TFR), and a generator configured to select a first vertex at a first unit time, based on an energy value of each vertex in the TFR, and to generate information on an operating speed of a machine including the gear box by connecting the first vertex to a second vertex located at a second unit time.

Abstract: Disclosed is an AlNiCo-based hard magnetic particle containing Al, Ni, Co, Cu, Ti, and the balance of Fe. The AlNiCo-based hard magnetic particle contains Co in an amount of 10 to 17 wt %, has a coercive force of 250-450 Oe, and has a residual magnetization/coercive force rate of 0.06 or more. The AlNiCo-based hard magnetic particle according to the present invention can advantageously guarantee magnetic properties suitable for being detected by a magnetic reluctance device due to a low content of Co.

Abstract: Provided is a continuous preparation method of composite particles for capturing carbon dioxide which, in a process of using sea water as water, that is, a process of converting sea water into water, contribute to carbon neutrality by fixing carbon dioxide through mineralization of ions in sea water which is supply water or effluent water of the process.

Abstract: A flip-flop includes an input logic circuit, a first latch, a second latch, and an output multiplexer; where the input logic circuit outputs a clock bar signal based on an input data bit and a clock signal, where the first latch and the second latch operate based on the input data bit, the clock signal, and a clock bar signal, where the output multiplexer operates based on outputs from nodes of the first and second nodes and outputs an output data bit, and where the input logic circuit has a uniform value in a period where there is no change of a value of the output data bit.

Abstract: The present invention relates to a composition for repressing the sternness of stem cells, which comprises a material for regulating OCT4 modification. The material for regulating OCT4 modification according to the present invention may regulate the phosphorylation or methylation of OCT4 and inhibit Wnt signaling, thereby effectively reducing the sternness of various stem cells. Therefore, since it can be effectively used in inhibition of proliferation, recurrence and metastasis of cancer, and inhibition of resistance to an anticancer agent, and can reduce sternness even in normal stem cells, it is expected that the time for differentiation of embryonic stem cells into specific cells is shortened, and efficiency is increased.

Abstract: Provided is a security fabric having improved security and identification properties, the security fabric comprising security threads containing a fluorescent material, which has an intrinsic light emission characteristic under excitation light, wherein the security threads are included in warp threads, weft threads, or warp and weft threads, and a set number of security threads are included per unit area.

Abstract: Exemplary embodiments provide a sensing amplifier based flip-flop applying a nonvolatile memory device which is applicable to a mobile device which has a small hardware area, uses a small control signal, does not include a separate write circuit, has low writing power consumption, a short reading time and small power consumption, and requires a low power operation.

Abstract: A slim double-skin structure according to one aspect of the present invention may comprise: a window frame, an outer window sash frame provided on an outdoor side and coupled to the window frame, an outer glass provided on the outer window sash frame, an inner window sash frame provided on an indoor side and coupled to the window frame, an inner glass provided on the inner window sash frame, an awning film provided in a hollow layer formed between the outer glass and the inner glass to serve as a shading, and a case-type glass fixing frame which is provided in the outer window sash frame so as to be located in the hollow layer and fixes the outer glass to the outer window sash frame concurrently with building-in and guiding the awning film.

Abstract: Provided is a security item using the intensity of fluorescent materials and a user identification system using same, the security item containing fluorescent materials that have intrinsic luminescent characteristics when irradiated with excitation light, wherein the fluorescent materials are contained in an amount of 0.2-3.0 wt % on the basis of the weight of the security item, and the difference in relative value calculated by formula (I), according to a 0.2-0.5 wt % difference in the amount of the fluorescent materials, is at least 3. Formula (I): the relative value of ? wt % of fluorescent materials=(the relative intensity of the emission wavelength of ? wt % of the fluorescent materials×100)/(the relative intensity of the emission wavelength of 3.0 wt % of the fluorescent materials).

Abstract: A PUF apparatus comprises: a PUF cell array in which a plurality of PUF cells are arranged each including a FeFET pair whose gates are commonly connected to a corresponding word line among a plurality of word lines, and whose drains and sources are connected to a corresponding bit line pair and a corresponding source line pair among a plurality of bit line pairs and a plurality of source line pairs running in a direction crossing the plurality of word lines; and a read-write-back block which is activated according to a read enable signal, and senses and amplifies a voltage difference occurring in a corresponding bit line pair among the plurality of bit line pairs according to the difference in driving strength due to a deviation in a manufacturing process of the FeFET pair in the PUF cell selected by a selected word line among the plurality of word lines.

Abstract: A nonvolatile memory device according to the embodiment includes: a first inverter; and a second inverter cross-coupled to the first inverter, wherein the second inverter includes a pull-up transistor, a pull-down transistor, and a ferroelectric field effect transistor having gate nodes connected to each other, and a restore transistor having one electrode connected to the ferroelectric field effect transistor, and the second inverter stores data in a nonvolatile manner.

Abstract: A flip-flop includes an input logic circuit, a first latch, a second latch, and an output multiplexer; where the input logic circuit outputs a clock bar signal based on an input data bit and a clock signal, where the first latch and the second latch operate based on the input data bit, the clock signal, and a clock bar signal, where the output multiplexer operates based on outputs from nodes of the first and second nodes and outputs an output data bit, and where the input logic circuit has a uniform value in a period where there is no change of a value of the output data bit.

Abstract: The present disclosure relates to an air ventilator for an automobile, comprising: a housing (100) comprising a flow path (110) through which air is blown; a wind direction control unit (200) comprising a louver (210) to adjust a wind direction of the air; a function carrier (300) installed in the wind direction control unit (200); a shaft (400) comprising a coupling portion (410) formed on first side portion of the shaft (400), wherein the function carrier (300) is mounted on the coupling portion (410) such that the function carrier (300) is rotatable, and an output bevel gear (420) formed on a second side portion of the shaft (400); and a pair of dampers (500) coupled to a hinge (600) so as to be foldable, wherein each of the pair of dampers (500) comprises an input bevel gear (510) to be engaged with the output bevel gear (420).

Abstract: Provided is a security item using the intensity of fluorescent materials and a user identification system using same, the security item containing fluorescent materials that have intrinsic luminescent characteristics when irradiated with excitation light, wherein the fluorescent materials are contained in an amount of 0.2-3.0 wt % on the basis of the weight of the security item, and the difference in relative value calculated by formula (I), according to a 0.2-0.5 wt % difference in the amount of the fluorescent materials, is at least 3. Formula (I): the relative value of ? wt % of fluorescent materials=(the relative intensity of the emission wavelength of ? wt % of the fluorescent materials×100)/(the relative intensity of the emission wavelength of 3.

Abstract: A ferroelectric random access memory device comprises: a memory cell array including a plurality of memory cells each having one ferroelectric transistor (FeFET) connected between a read line of a plurality of read lines and a source line of a plurality of source lines and one transistor connected between a bit line of a plurality of bit lines and a gate of the FeFET and having a gate connected to a corresponding word line of a plurality of word lines; and a read/write control unit, when address information for a memory cell to be written is applied with a write command and data, selecting a word line and a read line corresponding to a row address and applying a write voltage having a positive voltage level, and applying a ground voltage to the selected read line, and applying the write voltage to a bit line corresponding to a memory cell.

Abstract: Provided is a security fabric having improved security and identification properties, the security fabric comprising security threads containing a fluorescent material, which has an intrinsic light emission characteristic under excitation light, wherein the security threads are included in warp threads, weft threads, or warp and weft threads, and a set number of security threads are included per unit area.

Abstract: The present invention can provide light-colored magnetic particles having a zirconium oxide coating layer formed on a magnetic core, and having a silver coating layer formed on the zirconium oxide coating layer, and a part of the surface of the zirconium oxide coating layer is exposed to the outside, but chemical resistance is excellent, and thus the magnetic particles hardly cause a change of magnetic characteristics so as to be suitable for security elements.

Abstract: A touch sensor may include a substrate, a sensing pattern, and bridge electrodes. The sensing pattern may include a first pattern along a first direction and a second pattern along a second direction. The second pattern may include unit patterns isolated from each other. The bridge may electrically connect neighboring unit patterns, and the bridge electrodes adjacent in the first direction may be parallel to each other. An angle between an extending direction of the bridge electrode and the first direction may be from 45° to 89°. The substrate, the bridge electrode and the sensing pattern may be bent together to form a bending portion. The bridge electrode may extend in a direction the same as a bending direction. A bending angle between a body of the substrate which is not bent and an end portion of the bending portion may be greater than 0° and less than 180°.

Abstract: The present invention relates to a security device comprising a colloidal crystal which exhibits excellent visibility and is also easily manufactured. The security device, according to the present invention, comprises: a substrate; a groove part formed on the substrate; a colloidal crystal positioned in the groove part; and an aging film. The security device, according to the present invention, exhibits excellent security and visibility, and thus may be used for securities, credit cards, security cards, anti-forgery products, etc.