Abstract: Disclosed is an automatic telephonic session initiation method performed at a telephone session server including: receiving a telephonic session reservation request from a telephonic session client of a first terminal, the telephonic session reservation request including an identifier of an instant messaging client of a second terminal and a telephonic session initiation condition; storing corresponding reservation information according to the telephonic session reservation request; sending the reservation information to the instant messaging client of the second terminal according to the identifier of the instant messaging client of the second terminal; receiving a telephonic session reservation feedback message from the instant messaging client of the second terminal; and sending a telephonic session initiation request to the telephonic session client of the first terminal and a telephonic session client of the second terminal according to the reservation information when the telephonic session initiation c

Abstract: A system and method for automatic row alignment driving by a harvester when harvesting above-ground crops includes an elastic row sensing module, a processing module, a controlling module, and a steering module. The elastic row sensing module is disposed on a front grain thresher/grain isolator of the harvester, collecting data as to physical contact with the crop. The elastic row sensing module includes a deformable elastomer in contact with the high stem crop, the sensor detects and reports deformation of the elastomer. The processing module determines current alignment state of the harvester and the controlling module determines any corrective steering signal for the harvester. The steering module controls steering direction.

Abstract: A glove structure and its manufacturing method are illustrated. An edge of a piece disposed on a glove core of a glove structure is to injected and filled with molding material to have an injection molding assembly thereon. The injection molding assembly at least fills a section gap between the glove core and the edge of the piece. By using the injection molding assembly, the section gap between the glove core and the edge of the piece is masked, and an adhesive effect for bonding the piece is also obtained. Thus, the present disclosure provides positive and reliable means for preventing the edge of the piece from being separated from the glove core, making the glove structure maintain its required function in long term, increasing the quality and the lifetime of the glove structure, and making the glove structure have a curved surface shape to present its three-dimensional shape.

Abstract: Embodiments of the present disclosure provide an encoding/decoding method, apparatus, and system. The method includes: encoding information bits to obtain a first-level encoded code word; obtaining a sorting value of each check bit of the first-level encoded code word, and adjusting each check bit to a corresponding position according to the sorting value of each check bit, where the sorting value refers to a value of S when the check bit is related to first S information bits of the information bits in the first-level encoded code word, and S is a non-zero integer; and performing second-level encoding on the first-level encoded code word after positions of the check bits are adjusted, thereby obtaining a second-level encoded code word. The present disclosure is applicable to various communication systems.

Abstract: A gene sequence of recombinant human type II mitochondrial dynein-like GTPase having a nucleotide sequence shown in SEQ ID NO: 1 and uses thereof. A fusion nucleic acid comprising a nucleic acid encoding human type II mitochondrial dynein-like GTPase. A recombinant expression vector comprising the nucleic acid or a fusion nucleic acid. A transformant by which the nucleic acid or the fusion nucleic acid is introduced into a host. A non-human mammalian ADOA model based on the inactivation of the gene of type II mitochondrial dynein-like GTPase, which can effectively improve the pathological manifestations of ADOA using a recombinant expression vector encoding the human type II mitochondrial dynein-like GTPase. The expression level of the nucleic acid encoding the human type II mitochondrial dynein-like GTPase is higher, therefore, more human type II mitochondrial dynein-like GTPase can be obtained in the mitochondria. which can better treat eye diseases such as ADOA.

Abstract: A method for packaging a semiconductor structure, a packaging structure, and a chip. The method includes: forming the semiconductor structure on a SOI chip, where the semiconductor structure includes an edge coupler or a cavity structure; forming, through PECVD, silicon oxide on a surface of the semiconductor structure, where the surface is provided with an opening of a trench; and performing subsequent packaging. A characteristic of low step coverage of the PECVD is utilized for sealing an opening of a trench of the semiconductor structure, and addressed is an issue of a device failure due to the trench blocked by a packaging material in subsequent packaging.

Abstract: The invention relates to a method for preparing high-stability liquid blueberry anthocyanins, belonging to the field of food processing. A method for preparing high-stability liquid blueberry anthocyanins comprises the following process steps: adding graphene oxide and chitosan to an MES buffer solution at room temperature, mixing homogeneously and adding EDC and NHS sequentially, reacting to obtain a first solution; adding dry blueberry anthocyanin powder in the first solution, adjusting pH to 4.5 to 5.0 and mixing homogeneously to obtain a second solution, and treating the second solution at 350 to 420 MPa and 2 to 4° C. to obtain the product. The method for increasing the stability of blueberry anthocyanins provided by the present invention uses dry blueberry anthocyanin powder as a raw material and adds graphene oxide combined with chitosan compound as an anthocyanin stabilizer, thereby increasing the stability of blueberry anthocyanins during processing and production.

Abstract: The invention relates to a method for multi-metal products recovery from pyrolytic waste integrated circuit boards. The method mainly comprises the steps of smelting and blending, atomization, acidolysis and filtration, noble metal recycling, copper extraction and back extraction, nickel extraction and back extraction. Compared with the prior art, the method has the advantages that smoke pollution and the smelting slag treatment in the process of preparing a black copper ingot through multi-metal collaborative smelting are reduced, and the problems of low anode efficiency of the black copper electrolysis process are solved. Meanwhile, the high-temperature high-oxygen atomized gas generated in the atomizing process provides a heat source and an oxygen source for subsequent acidolysis, so that the energy consumption is further reduced. The method has the advantages such as short process, remarkable energy conservation and emission reduction.

Abstract: Innovations in adaptive encoding and decoding for units of a video sequence can improve coding efficiency when switching between color spaces during encoding and decoding. For example, some of the innovations relate to adjustment of quantization or scaling when an encoder switches color spaces between units within a video sequence during encoding. Other innovations relate to adjustment of inverse quantization or scaling when a decoder switches color spaces between units within a video sequence during decoding.

Abstract: The invention relates to the field of comprehensive recovery of valuable elements such as bromine, base metal and precious metal from incineration ash, especially relates to a method for enriching precious metals from printed circuit board incineration ash by bath smelting-chlorination circulation process. The process mainly comprises pretreatment of the printed circuit board Incineration ash and circulation-chlorination enrichment process for precious metals. The crude copper, crude zinc sulfate, bromine, lead chloride and precious metal enriched slag are obtained. Compared with the traditional process, it realizes the cycle enrichment of precious metals as well as avoids the loss of valuable metals and secondary pollution caused by tail liquid discharge.

Abstract: A frequency locking method for a phase-locked loop comprises the following steps: S1, a frequency control module controls a numerically controlled oscillator to obtain an maximum output frequency and a minimum output frequency; S2, obtain a minimum frequency ratio and a maximum frequency ratio by means of a time-to-digital converter and the frequency control module; S3, calculate a first frequency control word and a first frequency ratio according to the minimum frequency ratio and the maximum frequency ratio; S4, the frequency control module uses the Newton's iterative method to recalculate a new frequency control word; S5, obtain a new frequency ratio according to the new frequency control word; S6, if the new frequency ratio is within an error range, end iteration and stably output the new frequency control word, and otherwise, jump to step S4.

Abstract: The invention discloses an adaptive fault clearing scheme for an MMC VSC-HVDC grid based on source-grid coordination. A grid-side circuit breaker topology is disposed at each end of each DC line of the MMC VSC-HVDC grid to coordinate with a source-side control strategy when a fault occurs to the DC line so as to isolate the fault together. When a system runs stably, the voltage regulation controller does not actuate, after the fault occurs, the voltage regulation controller is started, and the output voltage regulation coefficient decreases, so that voltage at outlets of the converters drops accordingly, and coordinates with voltage of the pre-charging capacitor of the grid-side circuit breaker topology to realize fault isolation based on source-grid coordination. The adaptive fault clearing scheme provided by the invention greatly improves the speed of fault isolation.

Abstract: This application discloses a polar code encoding method and apparatus, which can improve encoding performance through codeword construction. The method includes: obtaining K information bits to be encoded, where K is a positive integer; determining a first bit sequence based on the K information bits to be encoded, where a length of the first bit sequence is N, the first bit sequence includes fixed bits and the K information bits to be encoded, and the K information bits to be encoded may further include a check bit; determining a second bit sequence based on the first bit sequence and an upper triangular matrix, where the upper triangular matrix is a matrix having N rows and N columns, and the upper triangular matrix may be an upper triangular Toeplitz matrix; and performing polar code encoding on the second bit sequence to obtain and output an encoded sequence.

Abstract: A photographing method and apparatus are provided. The photographing method includes: identifying a photographing distance and a photographing angle with respect to the external device based on timings of signals transmitted and received through a communication connection; acquiring a scene image based on an output of a camera of the photographing device; identifying a current composition model based on the photographing distance, the photographing angle and the scene image; acquiring a set of photographing parameters that are associated with the current composition model; identifying a focal length based on the photographing distance and the current composition model; displaying a preview image based on the output of the camera, the photographing parameter and the current composition model; outputting the preview image as a photographing result based on a photographing instruction; and updating the set of photographing parameters based on the photographing parameter.

Abstract: A durable palm fiber composite material is obtained by impregnating an unprocessed palm bark in a resin adhesive solution prepared by using a palm leaf as a raw material and then hot-pressing. The palm bark is dried under a natural state without additional processing. The palm leaf is made into a tannin resin adhesive solution under the effect of additives such as furfuryl alcohol, paraformaldehyde, and others. A pH value of the adhesive solution is controlled to be 9-11. A solid content is 40-60%. An adhesive amount applied to the palm bark by the resin adhesive solution is 800-1500 g/m2. Odd number of layers (three or more layers) of palm barks that are impregnated by the resin adhesive solution and are hot-pressed to the composite material. Hot-pressed parameters are as follows: the temperature is 150-180° C. the unit pressure is 0.8-1.5 MPa, and the time is 10-30 s/mm.

Abstract: A photovoltaic cell is provided, which includes a substrate; a first passivation layer and a first anti-reflection layer disposed on a front surface of the substrate; and a second passivation layer, a PPW layer and at least one silicon nitride layer SiuNv (1<u/v<4) disposed on a rear surface of the substrate. The at least one silicon nitride layer has a refractive index and a thickness in respective ranges of 1.9 to 2.5 and 50 nm to 100 nm. The second passivation layer includes at least one aluminum oxide layer AlxOy (0.8<y/x<1.6), a refractive index and a thickness of which are respectively in ranges of 1.4 to 1.6 and 4 nm to 20 nm. The PPW layer includes at least one silicon oxynitride layer SirOsNt (r>s>t), a refractive index and a thickness of which are respectively in ranges of 1.5 to 1.8 and 1 nm to 30 nm.

Abstract: A method for optimizing a deep learning operator, includes: calling a method of reading an image object to read target data from an L1 cache of an image processor to the processor in response to detecting the target data in the L1 cache, performing a secondary quantization operation on the target data in the processor to obtain an operation result and writing the operation result into a main memory of the image processor. The target data is fixed-point data obtained after performing a quantization operation on data to be quantized in advance and the data to be quantized is one of the following: float-point data of an initial network layer of the neural network model and fixed-point data outputted from a network layer previous to the current network layer.

Abstract: A server system receives a group operation request transmitted by a client. The group operation request is generated by the client in response to a trigger operation of a target group chat function, and includes a target identity and a target group chat function identifier. The server system determines a target group chat function use permission corresponding to the target identity. In accordance with a determination, based on the target group chat function use permission and the target group chat function identifier, that a user corresponding to the target identity has a permission to use the target group chat function, the server system transmits group operation result information to the client.

Abstract: This application discloses a face anti-spoofing recognition method and apparatus, a device, and a storage medium, and relates to the field of artificial intelligence (AI) technologies. The method is performed by a computer device, including: acquiring face video data including a to-be-detected face; detecting eye contours of the to-be-detected face from image frames of the face video data, and generating an eye contour sequence; performing eye movement probability prediction based on the eye contour sequence, and generating an eye movement state sequence; acquiring a first dataset and a second dataset in the eye movement state sequence; determining a probability of existence of an abnormal blink behavior of the to-be-detected face according to the first dataset and the second dataset; and determining that the to-be-detected face is a real face in a case that the probability is less than a predetermined threshold.