Abstract: A channel state information processing method and apparatus, and a channel state information receiving method and apparatus are provided. The channel state information processing method includes that: a second communication node receives configuration information sent by a first communication node, wherein the configuration information at least includes: a target frequency band used for indicating channel state information; the second communication node determines a first target frequency band and generates first channel state information corresponding to the first target frequency band according to the configuration information, wherein the first channel state information includes precoding matrix information; and the second communication node feeds back the first channel state information to the first communication node.

Abstract: Embodiments provide image display systems and methods for a camera calibration using a two-sided diffractive optical element (DOE). More specifically, embodiments are directed to determining intrinsic parameters of a camera using a single image obtained using a two-sided DOE. The two-sided DOE has a first pattern on a first surface and a second pattern on a second surface. Each of the first and second patterns may be formed by repeating sub-patterns that are lined when tiled on each surface. The patterns on the two-sided DOE are formed such that the brightness of the central intensity peak on the image of the image pattern formed by the DOE is reduced to a predetermined amount.

Abstract: A content recommendation method is provided. A first feature representation of a first user and a second feature representation of a second user are obtained. A cluster center corresponding to the first user is determined. An extra-domain feature representation and intra-domain feature representation of the first user are obtained. The intra-domain feature representation is based on mapping the extra-domain feature representation with the mapping relationship function. A target feature representation of the first user is determined based on the intra-domain feature representation and the first feature representation. Target content that matches the target feature representation of the first user is determined. The target content is pushed to the first user.

Abstract: A display substrate and a manufacturing method therefor, and a display apparatus. The display substrate includes a base substrate, a second power line, a data signal line and a plurality of sub-pixels, wherein at least one sub-pixel includes a pixel driving circuit and a light emitting device connected to the pixel driving circuit; a semiconductor layer and a plurality of conducting layers, which are disposed at one side of the semiconductor layer away from the base substrate, are disposed on the base substrate, a first electrode is arranged in at least one conducting layer, the first electrode is connected to the second power line, and there is an overlapping area between an orthographic projection of the first electrode on the base substrate and an orthographic projection of the data signal line on the base substrate.

Abstract: The present invention relates to a method of producing a collagen membrane that has particular mechanical properties.

Abstract: A silicon-carbon composite negative electrode material containing a lithium-rich long-chain composite salt, comprises a silicon-carbon composite material slurry and a lithium-rich long-chain composite salt. Each silicon-carbon composite material particle comprises an element-doped silicon-containing nanoparticle, a first carbon-based covering layer and a second carbon-based covering layer. The element-doped silicon-containing nanoparticle is a core, the first carbon-based covering layer is coated on a surface of the element-doped silicon-containing nanoparticle, the second carbon-based covering layer is coated on the first carbon-based covering layer. The lithium-rich long-chain composite salt comprises a plurality of composite ion bridging structures. A method for preparing the silicon-carbon composite negative electrode material containing a lithium-rich long-chain composite salt is further provided.

Abstract: A nanostructure comprising: a) a base plate sheet comprising a single-duplex layer comprised of DNA origami configured in a planar arrangement, b) a pore configured within the center of the base plate sheet, and c) a multi-duplex layer-thick wall comprising a single-duplex layer comprised of DNA origami that extends downward from the base plate sheet on the periphery of the pore, wherein the base plate sheet comprises a single-stranded DNA region on the bottom surface for lipid membrane anchor modification.

Abstract: Embodiments of this specification disclose a payment method based on near field communication, apparatus, and device, and a medium. The solution includes: sending, by a mobile terminal with a near field communication function, an electromagnetic signal used to trigger an NFC tag; obtaining tag information in the NFC tag in response to the electromagnetic signal, where the tag information includes payment link information; displaying, based on the payment link information, a payment page including user information of a first transaction party; obtaining payment information provided by a second transaction party based on the payment page; and sending a payment processing request including the payment information to a server, where the server is configured to complete payment based on the payment processing request.

Abstract: A reference signal sending method and a transmitter are provided. The method includes: determining a time-frequency resource pattern of a target reference signal used for interference measurement, where the time-frequency resource pattern is used to indicate a time domain location and a frequency domain location of the target reference signal; and sending the target reference signal based on the time-frequency resource pattern.

Abstract: A product cutting system includes a cutting device disposed at a cutting station for cutting a product and a conveying device transporting the product to be cut to the cutting station. The cutting device is separate from the conveying device and can cooperate with a plurality of different conveying devices to cut a plurality of different products.

Abstract: A mobile device includes a primary battery and a secondary battery, and the mobile device further includes: a power supply control module and a main control module connected to each other, where the power supply control module is respectively connected to the primary battery and the secondary battery; and the main control module is configured to control the primary battery to supply power to the mobile device when it is determined that the primary battery and the mobile device are in the power-on state; and control a power supply of the mobile device to be switched from the primary battery to the secondary battery when it is determined that the primary battery and the mobile device are in the power-off state.

Abstract: The disclosure provides a photoelectric detector. The photoelectric detector includes a waveguide layer, an absorption layer, and a cladding material. The absorption layer is located on the waveguide layer or at least partially embedded in the waveguide layer. The cladding material covers top portions and side walls of the waveguide layer and the absorption layer, at least one end surface of the photoelectric detector is a light incident surface, and light energy absorbed by a portion of the absorption layer adjacent to the light incident surface is smaller than light energy absorbed by other portions of the absorption layer.

Abstract: The present application discloses a light beam scanning system. The system comprises a beam splitting apparatus, an optical waveguide array, a light beam combining member, a light beam adjusting apparatus and a phase adjusting apparatus. The beam splitting apparatus receives a laser light beam, and divides the laser light beam into a plurality of sub-beams and then emits the sub-beams; the optical waveguide array is used to receive the plurality of sub-beams and transmit the plurality of sub-beams to a predetermined waveguide emergent end; the light beam combining member is connected to the optical waveguide array; the light beam adjusting apparatus is used to expand and collimate the light beam emitted from the light beam emergent surface to form a scanning light beam; the phase adjusting apparatus is used to adjust the relative phase distribution of the sub-waveguides.

Abstract: The disclosure provides a photoelectric detector. The photoelectric detector includes a waveguide layer, an absorption layer, and a cladding material. The absorption layer is located on an upper surface of the waveguide layer or at least partially embedded in the waveguide layer. The cladding material covers top portions and side walls of the waveguide layer and the absorption layer. At least one end surface of the photoelectric detector is a light incident surface, and a thickness of an end surface of the absorption layer adjacent to the light incident surface is smaller than a thickness of other portions.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first device may transmit a message indicating that the first device is operating on intermittently available energy harvested from outside the first device. The first device may receive a low-power wakeup signal. The first device may transmit, based at least in part on an energy harvesting state of the first device, an indication that the first device is capable of supporting continuous transmission and reception during a time frame having a configured duration. The first device may communicate during the time frame. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A receiving device may receive an encoded signal including a set of information blocks. Each information block may include a set of encoded information bits and a set of cyclic redundancy check (CRC) bits. The receiving device may perform a staircase decoding procedure to decode the set of encoded information bits of a selected information block that is part of a subset of the set of information blocks that is within a sliding window. The staircase decoding procedure may include one or more iterations of a decoding process applied to the subset of the set of information blocks. The receiving device may perform, inbetween iterations of the staircase decoding procedure applied to the subset of the set of information blocks within the sliding window, a CRC procedure based on the set of CRC bits in the set of information blocks.

Abstract: The embodiments of the present application relate to the technical field of communications. Disclosed are a user scheduling method in multi-antenna signal transmission, and an electronic device and a storage medium. The method comprises: acquiring channel information of channels that are used by a plurality of users, and according to the channel information of the channels that are used by the users, constructing a channel information covariance corresponding to each user; calculating a correlation coefficient between every two users according to the channel information covariance of each user; and selecting a scheduled user on the basis of the number of scheduled users and the correlation coefficient between every two users.

Abstract: Enhanced eye-tracking techniques for augmented or virtual reality display systems. An example method includes obtaining an image of an eye of a user of a wearable system, the image depicting glints on the eye caused by respective light emitters, wherein the image is a low dynamic range (LDR) image; generating a high dynamic range (HDR) image via computation of a forward pass of a machine learning model using the image; determining location information associated with the glints as depicted in the HDR image, wherein the location information is usable to inform an eye pose of the eye.

Abstract: The present application discloses a high-definition transparent blind fabric and a manufacturing method. The method comprises the following steps: preparing a polyester coated yarn, wherein the polyester coated yarn is prepared as follows: passing a dark color polyester fibre thread through a die head of a thread coating machine by a traction device, melting blackout PVC colloidal particles to form a coating layer to coat the dark color polyester fibre thread, preliminarily cooling the coated dark color polyester fibre thread via a cooling device, and passing the preliminarily cooled dark color polyester fibre thread through cooling water to obtain the polyester coated yarn; and carrying out weaving using the prepared polyester coated yarn as a polyester warp yarn and a polyester weft yarn to obtain the high-definition transparent blind fabric.

Abstract: Methods, systems, and devices for reducing channel state information feedback channel overhead by compressing coefficients of precoding vectors and reporting a subset of the compressed coefficients based on several parameters including network-signaled parameters. Some embodiments may be used in wireless communication embodiments in which channel state information from many layers and many frequency domain units need to be reported.