Abstract: A backplane includes: a substrate including a circuit structure layer, a first reflective layer disposed on a bearing surface of the substrate, a plurality of light-emitting diode chips, and a plurality of optical structures. The first reflective layer includes a plurality of through holes spaced apart. A light-emitting diode chip in the plurality of light-emitting diode chips is located in one of the plurality of through holes. The plurality of light-emitting diode chips are electrically connected to the circuit structure layer. The circuit structure layer is configured to drive the plurality of light-emitting diode chips to emit light. An optical structure in the plurality of optical structures covers the light-emitting diode chip, a light incident surface of the optical structure is in contact with a light exit surface of the light-emitting diode chip, and a light exit surface of the optical structure is a curved surface.

Abstract: An apparatus and a method for decoding a 3D map, and an encoded bitstream of a 3D map are provided. The apparatus for decoding a 3D map includes a transmitter and a decompressor. The transmitter is configured to receive a bitstream of a 3D map, where the 3D map includes a plurality of 3D map points. The decompressor is configured to decompress the bitstream of the 3D map to obtain reconstructed data of the 3D map, where the reconstructed data of the 3D map includes reconstructed data of the plurality of 3D map points. In this application, the decompressor end may support decompression of compressed data of the 3D map, to support compression/decompression of data of the 3D map.

Abstract: Provided are a bovine rotavirus fusion protein and calf diarrhea multivalent vaccine. The bovine rotavirus fusion protein contains a VP6 fragment, wherein the VP6 fragment contains an amino acid sequence as represented by SEQ ID NO. 4, and at least one loop region of the following (a)˜(c) is substituted with an antigenic epitope derived from bovine coronavirus and/or an antigenic epitope derived from E. coli: (a) amino acid residues of sites 168-177; with an amino acid sequence as represented by SEQ ID NO. 1; (b) amino acid residues of sites 194-205; with an amino acid sequence as represented by SEQ ID NO. 2; and (a) amino acid residues of sites 296-316, with an amino acid sequence as represented by SEQ ID NO. 3, The bovine rotavirus fusion protein contains a plurality of antigenic epitopes, and can enable a host to generate a plurality of antibodies after immunizing the host.

Abstract: Embodiments of this application belong to the field of 3D map technologies, and disclose methods and apparatuses for compressing and decompressing a 3D map, to reduce a data volume of a 3D map. The method for compressing a 3D map includes: obtaining a 3D map descriptor, where the 3D map descriptor corresponds to at least one 3D map point of the 3D map; performing binarization on a relationship between the 3D map descriptor and at least one preset threshold vector to obtain binary data; and performing quantization on a difference between the 3D map descriptor and the at least one preset threshold vector to obtain quantized data. In embodiments of this application, storage space required for storing a 3D map can be reduced, or transmission resources required for transmitting a 3D map can be reduced.

Abstract: A three-dimensional (3D) map compression method includes performing compaction processing on a to-be-encoded descriptor to obtain a first compact representation of the to-be-encoded descriptor, where the to-be-encoded descriptor corresponds to at least one 3D map point on a 3D map. A compact representation of at least one reference descriptor corresponding to the to-be-encoded descriptor is obtained, followed by obtaining a second compact representation of the to-be-encoded descriptor based on the first compact representation of the to-be-encoded descriptor and the compact representation of the at least one reference descriptor and encapsulating the second compact representation to obtain a bitstream of the 3D map.

Abstract: An apparatus and a method for encoding a 3D map are provided. The apparatus for encoding a 3D map includes a compression module (51) and a transmission module (52). The compression module (51) is configured to compress data of a 3D map to obtain a bitstream of the 3D map, where the 3D map includes a plurality of 3D map points, and the data of the 3D map includes data of the plurality of 3D map points. The transmission module (52) is configured to transmit the bitstream of the 3D map. With the use of the apparatus, a data volume of a 3D map can be reduced, thereby reducing transmission bandwidth and improving transmission efficiency.

Abstract: A method and an apparatus for retrieving a 3D map is provided. The method for retrieving a 3D map includes: obtaining binary data of a plurality of 3D map descriptors, where the plurality of 3D map descriptors correspond to at least one 3D map point of a 3D map; obtaining a retrieval descriptor, where the retrieval descriptor is a feature that corresponds to a real environment and that is extracted from visual information collected by a sensor of an electronic device; and performing retrieval in the binary data of the plurality of 3D map descriptors based on binary data of the retrieval descriptor, to obtain at least one target 3D map descriptor, where a length of binary data of each of the plurality of 3D map descriptors is different from a length of the binary data of the retrieval descriptor.

Abstract: The present disclosure provides a method of forming a semiconductor device including an nFET structure and a pFET structure where each of the nFET and pFET structures include a semiconductor substrate and a gate trench. The method includes depositing an interfacial layer in each gate trench, depositing a first ferroelectric layer over the interfacial layer, removing the first ferroelectric layer from the nFET structure, depositing a metal oxide layer in each gate trench, depositing a second ferroelectric layer over the metal oxide layer, removing the second ferroelectric layer from the pFET structure, and depositing a gate electrode in each gate trench.

Abstract: A quick electrical-connecting structure for a high-voltage high-frequency pulse environment relates to the technical field of high-voltage high-frequency electrical engineering. The quick electrical-connecting structure includes a plug, a socket, and a cable, where the cable is connected to the socket through the plug; the plug and the socket internally enclose an annular cavity surrounding the cable; and a protective fluid is filled in the annular cavity. By charging a protective fluid to the annular cavity in the plug and the socket, a high-intensity insulating fluid protective layer is maintained around a connecting position of the cable in the annular cavity. Therefore, the quick electrical-connecting structure lowers an internal humidity, and can effectively reduce corona discharge and creepage.

Abstract: Disclosed in the present invention are an excimer laser energy model identification method and apparatus. The method comprises the following steps: establishing a gated recurrent network for excimer laser energy model identification; within a plurality of preset time periods, setting energy collection conditions in a single laser pulse mode, and collecting a training data set for excimer laser energy model identification; and using the training data set to train the established gated recurrent network, and when a training termination condition is satisfied, ending the training and obtaining an excimer laser energy model. By means of the method provided by the present invention, the maximum error between a pulse energy generated by the identified excimer laser energy model and an actual pulse energy is less than 1.5%, and thus, a simulation requirement of excimer laser energy characteristic control can be met.

Abstract: A material with pine-branch like samarium oxide/graphene/sulfur gel structure, and a preparation method and use thereof. The material is reduced graphene oxide carrying pine-branch like samarium oxide on the surface to form a cross-linked gel structure, and sulfur is loaded on the gel structure. The preparation method includes: subjecting graphene oxide and a samarium salt to hydrothermal reduction to prepare a reduced graphene oxide/samarium precursor; under an inert atmosphere, thermolysing the reduced graphene oxide/samarium precursor to obtain a reduced graphene oxide/pine-branch like samarium oxide gel; and melting and diffusing the sulfur onto the reduced graphene oxide/pine-branch like samarium oxide gel. The material with pine-branch like samarium oxide/graphene/sulfur gel structure greatly improves the electrochemical performance of lithium-sulfur batteries.

Abstract: Frame-level quality scores for video frames of a video item is determined. A sliding window is applied to the video frames to identify a plurality of groups of the video frames for scoring on a group-level. A plurality of group-level quality scores for the plurality of groups of video frames of the video item is determined using the frame-level quality scores of the video frames. One of the plurality of groups of video frames of the video item is selected based on the plurality of group-level quality scores. A moving thumbnail is created using the selected group of video frames selected based on the respective group level quality score.

Abstract: Frame-level quality scores for video frames of a video item is determined. A sliding window is applied to the video frames to identify a plurality of groups of the video frames for scoring on a group-level. A plurality of group-level quality scores for the plurality of groups of video frames of the video item is determined using the frame-level quality scores of the video frames. One of the plurality of groups of video frames of the video item is selected based on the plurality of group-level quality scores. A moving thumbnail is created using the selected group of video frames selected based on the respective group level quality score.

Abstract: A method of generating a moving thumbnail is disclosed. The method includes sampling video frames of a video item. The method further includes determining frame-level quality scores for the sampled video frames. The method also includes determining multiple group-level quality scores for multiple groups of the sampled video frames using the frame-level quality scores of the sampled video frames. The method further includes selecting one of the groups of the sampled video frames based on the multiple group-level quality scores. The method includes creating a moving thumbnail using a subset of the video frames that have timestamps within a range from the start timestamp to the end timestamp.

Abstract: An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers.

Abstract: A method of generating a moving thumbnail is disclosed. The method includes sampling video frames of a video item. The method further includes determining frame-level quality scores for the sampled video frames. The method also includes determining multiple group-level quality scores for multiple groups of the sampled video frames using the frame-level quality scores of the sampled video frames. The method further includes selecting one of the groups of the sampled video frames based on the multiple group-level quality scores. The method includes creating a moving thumbnail using a subset of the video frames that have timestamps within a range from the start timestamp to the end timestamp.