Abstract: In a method for recovering lithium hydroxide from a lithium secondary battery, cathode powder is prepared from a cathode of the lithium secondary battery. A cathode active material mixture is prepared by mixing the cathode powder with a calcium compound. The cathode active material mixture is reduced to form a preliminary precursor mixture. A lithium precursor is recovered from the preliminary precursor mixture. Therefore, a lithium precursor can be obtained with high purity without a complicated leaching process or an additional process, which result from a wet-based acid solution process.

Abstract: A package structure includes a bonding substrate, an integrated circuit, and a heat sink metal. The integrated circuit includes an active region facing the bonding substrate. The heat sink metal is located between the bonding substrate and the active region of the integrated circuit. The heat sink metal is electrically insulated with the integrated circuit.

Abstract: The present disclosure provides a preparation method of an easy-to-cook whole grain based on microwave-induced cracking, and belongs to the technical field of food processing. In the present disclosure, the preparation method of an easy-to-cook whole grain includes the following steps: subjecting a whole grain to a heat-moisture treatment, and conducting short-time microwave-induced cracking, tempering, and cooling to obtain the easy-to-cook whole grain. The easy-to-cook whole grain obtained by the preparation method of the present disclosure has a complete grain, a slightly-expanded volume, and fine cracks on its surface. Compared with unprocessed whole grains, the easy-to-cook whole grain has a water absorption increased from 1.35 times to 1.9 times an original weight of the unprocessed whole grains during rice steaming.

Abstract: A power module and a manufacturing method include semiconductor chips, an insulating circuit board including an insulating layer and a first metal layer disposed on a first surface of the insulating layer, and lead frames disposed between the semiconductor chips and the insulating circuit board.

Abstract: A resolution controller for a stretchable display includes a resolution-setting multiplexer module to receive a resolution selecting signal and to apply a gate in panel (GIP) selecting signal, in response to the resolution selecting signal, and a GIP module configured to generate a gate driving signal in response to the GIP selecting signal applied by the resolution-setting multiplexer module, and apply the gate driving signal to a pixel driving flexible printed circuit board (FPCB) of the stretchable display to drive an open pixel depending on a stretched state of the stretchable display.

Abstract: An antenna device according to an embodiment of the present invention includes a dielectric layer, an antenna unit disposed on a top surface of the dielectric layer, the antenna unit including a radiator and a transmission line connected to the radiator, a dummy electrode separated from the antenna unit on the top surface of the dielectric layer, the dummy electrode at least partially surrounding the antenna unit, and a blocking pattern arranged around the antenna unit in the dummy electrode. Radiation interruption from the dummy electrode is prevented by the blocking pattern to improve radiation reliability.

Abstract: A continuous use authentication method includes: acquiring a normal state image and a current image for a user; determining an inferred classification state for the user from among a plurality of classification states by applying the normal state image and the current image to a low-depth inference model for the user; when the inferred classification state is included in an abnormality category, determining a high-depth inference model corresponding to the inferred classification state from among a plurality of high-depth inference models; and determining reliability of the inferred classification state by applying the current image to the high-depth inference model.

Abstract: A RF signal beam transmission enhancement board comprising: a substrate having at least one substrate surface; at least one elemental-featuring layer disposed on the substrate surface and including a plurality of elemental-featuring elements; and at least one index-matching layer arranged to cover the elemental-featuring elements and the substrate surface. The plurality of elemental-featuring elements has a pattern arrangement with a pattern resolution Rp given by Rp = ? N , where ? is a wavelength of a signal beam to be transmitted and N is an integer ranging from 1 to 10 such that the index-matching layer can work with the elemental-featuring elements to form an elemental-surface for minimizing reflection of a signal beam to be transmitted through the signal beam transmission enhancement board.

Abstract: A system selecting a process key factor in a commercial chemical process, includes: a data extraction unit that extracts tag data in units of a set period; an outlier discrimination unit that discriminates and aggregates outliers by tag by using an outlier extraction reference master; an outlier processing unit that generates an input mart draft excluding the outliers; a derived variable generation unit that generates derived variables for each tag, and generates an advanced input mart having the derived variable added thereto; a yield calculation unit that backs up the result of calculation of a yield by realizing a target value via exclusion and correction of the outliers; and a key factor extraction unit that extracts a yield key factor by calculating importance of each tag, and backs up importance data for each tag.

Abstract: A method of personalizing a vehicle lamp includes drawing an image made up of a plurality of pixels that implement a vehicle lamp, based on an input by a user. The method also includes converting the drawn image into light-and-shade data that correspond to the pixels, respectively, multiplying a pixel light distribution value, corresponding to each pixel, by a weighted value based on the data resulting from the conversion, adding up results of the multiplication, and deriving total light distribution of the pixels that results when brightness of the vehicle lamp is the same as that of the drawn image. The method further includes comparing the derived total light distribution against a predetermined reference value and determining whether the derived total light distribution satisfies a predetermined light distribution reference, and applying the drawn image to the vehicle lamp when it is determined that a predetermined light distribution reference is satisfied.

Abstract: A system for predicting process changes by using key factors in a commercial chemical process, includes: a key factor extraction and individual tag importance backup unit that extracts yield key factors by calculating the importance of each tag, and backs up importance data for each tag; and a yield prediction model training and yield prediction performing unit that performs yield prediction model training by using the importance of each tag accumulated in the key factor extraction and individual tag importance backup unit, and performs yield prediction so as to output a yield prediction result, evaluates performance, and selects an optimal prediction model.

Abstract: Provided is a high pressure processing apparatus including: a first chamber accommodating an object to be processed; a second chamber surrounding the first chamber and heating the first chamber; a third chamber including a 3-1-th chamber surrounding a portion of the second chamber and a 3-2-th chamber surrounding another portion of the second chamber; and a supply module supplying a process gas for processing the object in the first chamber at a first pressure, supplying a protection gas to a space between the second chamber and the first chamber at a second pressure set in relation to the first pressure, and supplying a defense gas to a space between each of the 3-1-th chamber and the 3-2-th chamber and the second chamber at a third pressure lower than the first pressure and the second pressure and higher than an external pressure of the third chamber to block external air from being introduced into the third chamber.

Abstract: A laparoscopic image smoke removal method based on a generative adversarial network, and belongs to the technical field of computer vision. The method includes: processing a laparoscopic image sample to be processed using a smoke mask segmentation network to acquire a smoke mask image; inputting the laparoscopic image sample to be processed and the smoke mask image into a smoke removal network, and extracting features of the laparoscopic image sample to be processed using a multi-level smoke feature extractor to acquire a light smoke feature vector and a heavy smoke feature vector; and acquiring, according to the light smoke feature vector, the heavy smoke feature vector and the smoke mask image, a smoke-free laparoscopic image by filtering out smoke information and maintaining a laparoscopic image by using a mask shielding effect. The method has the technical effects of robustness and ability of being embedded into a laparoscopic device for use.

Abstract: A semiconductor device includes a first contact layer, a second contact layer, an active layer, a photonic crystal layer, a passivation layer, a first electrode and a second electrode. The first contact layer has a first surface and a second surface opposite to each other. Microstructures are located on the second surface. The second contact layer is located below the first surface. The active layer is located between the first contact layer and the second contact layer. The photonic crystal layer is located between the active layer and the second contact layer. The passivation layer is located on the second contact layer. The first electrode is located on the passivation layer and is electrically connected the first surface of the first contact layer. The second electrode is located on the passivation layer and is electrically connected to the second contact layer.

Abstract: The present disclosure provides a bolometer including a substrate, a reflecting mirror on the substrate, and a temperature sensing unit above the reflecting mirror. The temperature sensing unit includes a first insulating layer, a thermistor on the first insulating layer, a second insulating layer on the thermistor, an electrode layer in the second insulating layer and right above the thermistor, and a metal meta-surface in the second insulating layer and right above the electrode layer. The electrode layer includes a plurality of electrodes separated from each other. A projection region of the metal meta-surface on the thermistor is equal to or larger than the thermistor.

Abstract: A cycloidal reducer includes a reduction unit configured to reduce a torque input and an output unit configured to transfer the reduced output to the outside. A cycloidal rotor that is one constituent element of the reduction unit has a tooth-type protrusion formed in the shape of a circular arc. Thus, the level of difficulty of process is decreased more than when the tooth-type protrusion in the related art is formed in the shape of a broken line. In addition, rotor pins are accommodated in through-holes, respectively, that are equally spaced in the cycloidal rotor. A bushing is formed that fills a gap between the through-hole and the rotor pin is formed in order for the rotor pin to stably transfer rotational power. Accordingly, the advantage of effectively distributing a load and stably transferring a reduction torque to the outside is provided.

Abstract: The present disclosure provides an electronic signature authentication system and method capable of enhancing stability and reliability of an electronic signature by generating electronic signature information for authentication of an electronic document based on biometric information of a user.

Abstract: This disclosure related to a group of peptide derivative Omicsynins with antiviral activity against influenza virus and coronavirus. It also related uses of these derivatives, the chemical formula of the peptide derivative Omicsynins is shown in formula (1): R1—R4 are shown in the following table. NO. substituent1 substituent2 substituent3 R1 Basic amino-acid side chains including lysine, histidine, citrulline residues, and etc. R2 —CH(CH3)2, —CH(CH3)CH2CH3 —CH2CH(CH3)2 Neutral amino-acid side chain including tryptophan, serine, threonine, cysteine residues and etc. R3 R3 including tyrosine, lysine, histidine, citrulline residues, and etc. R4 —CH2OH —CHO R4 including —CH2NH2, —CH?NH,— CH?NOH, —COOH, —COOR5 (R5 represents alkyl groups containing 1-3 carbons), -CONH2 and etc.

Abstract: A nanocrystal array, a laser device, and a display device are provided. The nanocrystal array includes a plurality of nanorods arranged in an array. Each nanorod includes a nanorod buffer layer, a first type semiconductor layer, a tunnel junction layer, a second type semiconductor layer, a multi-quantum well, and another first type semiconductor layer successively stacked on each other. The laser device and the display device include the nanocrystal array. The present disclosure may reduce the laser threshold and increase output power, and further improve the resolution and image quality of the display device.

Abstract: An antenna structure according to an embodiment of the present invention includes a film antenna including a dielectric layer, an upper electrode layer disposed on an upper surface of the dielectric layer and including a radiation pattern, a transmission line, and a ground pad, and a lower ground layer disposed on a lower surface of the dielectric layer, and a flexible circuit board including a core layer, a power supply wiring layer disposed on a lower surface of the core layer and electrically connected to the transmission line, and a ground plate disposed on an upper surface of the core layer and disposed in overlapping with the power supply wiring layer in a planar direction. Thereby, it is possible to reduce a radiation signal generated from the power supply wiring through the ground plate, suppress a noise of the antenna and increase radiation efficiency.