Abstract: The present disclosure relates to a method and a system for preparing urea by coupling denitration with electrocatalytic reduction. Specifically, the method of the present disclosure comprises: introducing an absorption solution containing nitrite and nitrate, which is generated by subjecting flue gas containing nitric oxide to a denitration step, into a separation step to separate the nitrite and the nitrate, thereby obtaining a solution rich in the nitrite and the nitrate; and introducing the solution rich in the nitrite and the nitrate generated in the separation step into an electrocatalysis step, and carrying out the electrocatalytic reduction in the presence of carbon dioxide or carbonate ions to generate a urea solution. The system of the present disclosure comprises: a denitration device, a separation device connected to the denitration device, and an electrocatalytic device connected to the separation device.

Abstract: Embodiments of this application disclose a service authorization method and system, and a communication apparatus. The method includes: A first network element obtains a first access token from a token generation network element, and sends a first service request for a specified service to a second network element. The first service request includes the first access token. The first access token indicates that an NF service consumer network element has permission to access a specified service provided by an NF service producer network element belonging to a specified service domain. The first access token includes an identifier of the NF service consumer network element, an identifier of the specified service, and first service domain information associated with the specified service domain. The first service domain information is carried in the first access token, so that service domain-based access control can be implemented, thereby helping improve security of service authorization.

Abstract: A defect detecting apparatus and method are provided. The defect detecting apparatus receives an image to be tested. The defect detecting apparatus detects the image to be tested through a defect detecting model to generate an anomaly score corresponding to the image to be tested, and the defect detecting model is generated based on the training of a generative adversarial network and a plurality of normalized loss functions. The defect detecting apparatus compares the anomaly score with an anomaly score threshold to determine whether the image to be tested is a defective image.

Abstract: A sending device may obtain a first to-be-encoded vector. The sending device may perform first encoding on the first to-be-encoded vector, to obtain a second to-be-encoded vector. The sending device may encode the second to-be-encoded vector based on a first generator matrix, to obtain an encoded codeword. The first generator matrix may include at least N+1 submatrices a, and N of the submatrices a may be located on a main diagonal of the first generator matrix. The first generator matrix may be a block upper triangular matrix, or the first generator matrix may be a block lower triangular matrix. The submatrix a is a polar kernel matrix with a size of 2m*2m, m is a natural number, and N is a natural number. The sending device may send the encoded codeword.

Abstract: A semiconductor device and a method of forming the same are provided. In an embodiment, an exemplary semiconductor device includes a vertical stack of channel members disposed over a substrate, a gate structure wrapping around each channel member of the vertical stack of channel members, and a source/drain feature disposed over the substrate and coupled to the vertical stack of channel members, the source/drain feature comprising an undoped bottom layer and a doped upper layer, where a part of the undoped bottom layer of the source/drain feature is disposed directly under the gate structure.

Abstract: A display panel and a display apparatus are provided. The display panel includes a display area. The display area includes color pixels and pixel groups. The color pixels include a first pixel, a second pixel and a third pixel that have different colors from one another, each of the pixel groups includes one first pixel, one second pixel, one third pixel and at least one color-changing pixel. An operating state of the at least one color-changing pixel includes a transparent state and a black state. The display panel provided by the present disclosure can achieve a transparent display effect, and can also display black pixel information in an image by using a black state of the color-changing pixel, which solves the technical problem in the related art in which transparent display is difficult to display black pixel information in the image.

Abstract: A cam roller type horizontal extrusion cracking system for walnuts, including feeding, cracking and falling devices fixed accordingly on a stand. The feeding device includes a feeding box; an intermittent feeding roller is arranged therein; one side of the roller includes a feeding baffle plate, the other side includes an adjustable feeding scraper blade mechanism; and opposing feeding slots are formed in the roller. The cracking device includes an extrusion box body; movable and fixed tooth-shaped extrusion plates are oppositely mounted therein; one side of the movable plate opposite the fixed includes an extrusion cam; the plates have a plurality of tooth gaps; a walnut passes through the feeding device, falls into a gap between the plates; the cam drives the movable plate to do a periodic reciprocating motion, to synchronously cooperate with the fixed plate to perform extrusion cracking on the walnut.

Abstract: The present disclosure relates to the technical field of potential transformer (PT) ferromagnetic resonance elimination, in particular to a PT ferromagnetic resonance elimination method implemented by actively inputting resistance through an electronic load, including the following steps: setting up a PT, and determining a mapping relationship; constructing a resonance elimination control system; and designing the electronic load as an active resonance elimination device. The present disclosure overcomes a contradiction between a magnitude of resonance elimination resistance and winding overload in a PT open delta during single-phase-to-earth fault and fault clearance, and effectively avoids the technical problems of difficult distinguishing between single-phase-to-earth fault characteristics and power frequency resonance characteristics and causing resonance in a single-phase-to-earth fault process.

Abstract: The present disclosure relates to a method for modifying polyester by a swelling agent combined with cutinase, belonging to the technical field of textile processing. According to the method, a phenol solution or an o-vanillin solution is used as the swelling agent to perform swelling treatment on the polyester, and combined with a Humicola insolens cutinase solution to perform hydrophilic modification on the polyester, which not only significantly improves the release amount of hydrolysates, but also reduces the fabric mass loss compared with the traditional chemical modification method.

Abstract: A data analysis-based energy-saving control method for a precision air conditioner in a cloud computing data center, a medium, and a system, initially trains a Bayesian linear regression model based on historical datasets of heat source data of a cloud server and control quantity data of a precision air conditioner, and is used to predict a temperature difference between temperature sensors in a data center in future time, obtain newly-added training data in real time in a control process, update the Bayesian linear regression model in real time, predict the temperature difference between the sensors in real time, and obtain an optimal control quantity of a combination of a frequency of a discrete compressor and an opening degree of a water valve in real time by using a grid search algorithm to control an actual temperature difference between the sensors in the future.

Abstract: This disclosure provides a beam management method and apparatus, to quickly implement beam alignment. The beam management method is applied to a first device and includes: obtaining a first reference signal sent by a second device based on a first set beam, and determining a first beam based thereon such that a signal quality of the first reference signal obtained by the first device based on the first beam is the best; and sending a second reference signal to the second device based on the first beam, where the second reference signal is used to determine a second beam of the second device, and a signal quality of the second reference signal obtained by the second device based on the second beam is the same as that of the first reference signal obtained by the first device based on the first beam.

Abstract: An approach for assisting software developers to fill the data gap and reproducing client application issue using reported reproducing steps is disclosed. The approach involves constructing service request/response sequence (from the developer's side based on the limited data) from customer's reproducing steps and developer's running inspection result and perform UI-service mapping, redirecting service call to data simulator which replay the service request and response, and adjusting service response with multiple data sources and policies. Lastly, the approach can transform the issue to an automatic test script with the service response in a mockup function (e.g., can be used to extend test data and enhance test cases).

Abstract: This application discloses a neural network-based channel estimation method and a communication apparatus. The method may be implemented in the following steps: obtaining first location information of a first communication apparatus; processing the first location information by using a neural network, to obtain first channel information, where the first channel information is information about a radio channel between the first communication apparatus and a second communication apparatus; and performing communication based on the first channel information. The neural network is used to estimate channel information based on location information. This can avoid channel estimation based on a pilot signal, reduce overheads of the pilot signal, and improve efficiency and accuracy of estimating the channel information.

Abstract: Disclosed are a vertical motion protection method and device based on a dual-stage motion system of a photolithography machine. The method comprises: according to a distance between measured points and reference points of the eddy current sensor and coordinates of the reference points of the eddy current sensor, calculating coordinates of the measured points on a lower surface of the micro-motion stage respectively; calculating a point normal form equation of the micro-motion stage at the current time using measured coordinates of the measured points on the micro-motion stage, then substituting X and Y coordinates of the measured points on the translated micro-motion stage to determine a maximum height of the micro-motion stage at the current time; and comparing the maximum height with a height threshold, if the maximum height exceeds the height threshold, shutting down for protection, or else continuing to operate the system.

Abstract: An authentication management function AUSF receives an authentication request message from an access and mobility management function AMF, where the authentication request message carries a subscription concealed identifier SUCI. The AUSF sends an authentication vector get request message to a unified data management UDM function, where the authentication vector get request message carries the SUCI. The AUSF receives an authentication vector get response message from the UDM, where the authentication vector get response message includes authentication and key management for application AKMA indication information. The AUSF generates, based on the AKMA indication information, an authentication and key management for application-key identifier based on a routing indicator RID in the SUCI.

Abstract: The present disclosure discloses a display driving method, a display driver chip and a liquid crystal display device. The display driving method includes: within a display duration of a first bit-plane data, controlling the display device to display the first bit-plane data; when a loading duration of a single bit-plane data is longer than the display duration of the first bit-plane data, after completing the display of the first bit-plane data, controlling a pixel liquid crystal layer corresponding to the first bit-plane data in the display device to return to a target state, and completing loading of a second bit-plane data while maintaining the pixel liquid crystal layer corresponding to the first bit-plane data in the target state. Based on the above method, the cost of data driving can be effectively reduced, and the display effect of the liquid crystal display device can be improved.

Abstract: This application relates to the field of wireless communications technologies, and discloses an encoding method and apparatus, to improve accuracy of reliability calculation and ordering for polarized channels. The method includes: obtaining a first sequence used to encode K to-be-encoded bits, where the first sequence includes sequence numbers of N polarized channels, the first sequence is same as a second sequence or a subset of the second sequence, the second sequence comprises sequence numbers of Nmax polarized channels, and the second sequence is the sequence shown in Sequence Q11 or Table Q11, K is a positive integer, N is a positive integer power of 2, n is equal to or greater than 5, K?N, Nmax=1024; selecting sequence numbers of K polarized channels from the first sequence; and performing polar code encoding on K the to-be-encoded bits based on the selected sequence numbers of the K polarized channels.

Abstract: A computer-implemented method includes: extracting, by one or more processors, media data from an information technology ticket; extracting, by one or more processors, a plurality of data elements from the media data; and generating, by one or more processors, a ticket knowledge graph based on the plurality of data elements, wherein a node of the ticket knowledge graph represents a data element, and an edge between a first node and a second node in the ticket knowledge graph represents a correlation between a first data element represented by the first node and a second data element represented by the second node.

Abstract: Disclosed are a shield tunnel segment structure and a construction method thereof. The shield tunnel segment structure includes segment blocks sequentially spliced in a circumferential direction. Each segment block forms a closed annular segment structure, and outer diameters of adjacent annular segment structures gradually increase in an axial direction. At least two adjacent segment blocks of the same annular segment structure form an annular inner groove, and at least one segment block of the adjacent annular segment structures is provided with an inner bump which matches the annular inner groove. At least two adjacent segment blocks of the same annular segment structure form an annular outer groove, and at least one segment block of the adjacent annular segment structures is provided with an outer bump which matches the annular outer groove. The annular outer grooves and the annular inner grooves are staggered in the circumferential direction.