Abstract: The present invention relates to a method for preparing a hollow covalent organic framework (COF) material and hollow COF material prepared by said method. Said method is characterized in including a monomer displacement step in the method, thereby obtaining the hollow COF material with a controllable particle size, wall thickness and/or specific surface area.

Abstract: A lunar base energy supply and application system based on photocatalytic water splitting hydrogen production technology are provided. The system includes a solar photovoltaic power generation unit, a power management unit, a water storage tank, a photocatalytic water splitting unit, an hydrogen-oxygen storage unit, an hydrogen-oxygen-water conversion unit, a condition monitoring unit, a chemical propulsion unit, an environmental control and life support unit, and a load. The photocatalytic water splitting unit and the hydrogen-oxygen-water conversion unit can generate hydrogen and oxygen, and the solar photovoltaic power generation unit and the hydrogen-oxygen-water conversion unit can generate electric power, thus ensuring stable supply of energy at the lunar base.

Abstract: A sodium-containing oxide positive electrode material and a preparation method therefor and use thereof are disclosed. Also disclosed are a positive electrode plate and uses thereof.

Abstract: A bone substitute composition includes a bone substitute matrix and a conditioning solution. The bone substitute matrix includes 85% to 98% by weight of alkaline calcium phosphate powder, 1% to 10% by weight of a polymer, and 1% to 5% by weight of a crosslinker. The conditioning solution includes 90% to 97% by weight of water, 1% to 5% by weight of a phosphate, and 1% to 5% by weight of a water-soluble acidic compound.

Abstract: A first terminal device has first data to be transmitted on a sidelink and has second data to be transmitted on an uplink. The first terminal device performs medium access control MAC protocol data unit PDU assembly on the first data or does not perform MAC PDU assembly on the first data based on a result of comparison between a transmission priority of the first data and a transmission priority of the second data.

Abstract: A method, system, and computer program product for recommending an initial database security model. The method may include identifying a plurality of nodes connected to a security network. The method may also include analyzing security characteristics of each node of the plurality of nodes. The method may also include identifying, from the security characteristics, key factors for each node. The method may also include calculating similarities between each node of the plurality of nodes. The method may also include building a self-organized centerless network across the plurality of nodes by grouping nodes with high similarities based on the similarities between each node, where the self-organized centerless network is a centerless network without a central management server, and includes groups of nodes from the plurality of nodes. The method may also include generating federated security models for the groups of nodes.

Abstract: A voiceprint recognition method includes: obtaining a target speech information set to be recognized that includes speech information corresponding to at least one object; extracting target feature information from the target speech information set by using a preset algorithm, and optimizing the target feature information based on a first loss function to obtain a first voiceprint recognition result; obtaining target speech channel information of a target speech channel, where the target speech channel information includes channel noise information, and the target speech channel is used to transmit the target speech information set; extracting target feature vectors in the channel noise information, and optimizing the target feature vectors based on a second loss function to obtain a second voiceprint recognition result; and fusing the first voiceprint recognition result and the second voiceprint recognition result to determine a final voiceprint recognition result.

Abstract: A method for controlling the balanced frosting of outdoor units in a multi-split air-conditioning system solving the problem in existing multi-split air-conditioning systems of resource waste caused by a low utilization efficiency of the heating capability of outdoor units as a result of some of the outdoor units entering a defrosting state when the heating capability is not fully utilized. According to the control method, by determining whether an outdoor unit set satisfies a frosting unbalance condition, the actual output capability of outdoor units of the outdoor unit set is selectively controlled on the basis of the frosting degrees of all the outdoor units. Thus, the difference between the frosting degrees of different outdoor units in the outdoor unit set at the same time can be reduced, such that the heating capability of all the outdoor units can be fully utilized when the outdoor unit set enters a defrosting state.

Abstract: Aspects of an efficient compensation network for reducing reactive power in a wireless power transfer (WPT) system are disclosed. The compensation network comprises a series/series (S/S) constant current (CC) source, a reactive power compensation capacitor, and a constant current (CC)-to-constant voltage (CV) network. In an example, the S/S CC source comprises a first capacitor connected in series with a first inductor on a primary side of a transformer and a second inductor on a secondary side of the transformer. The S/S CC source converts an input voltage signal of the WPT system into a constant alternating current (AC) current signal. In an example, the CC-to-CV network comprises at least a third capacitor and a third inductor. The CC-to-CV network converts the constant AC current signal into a constant AC voltage signal.

Abstract: This application relates to the field of intelligent transportation and intelligent vehicle technologies, and may be applied to a plurality of traffic scenarios, for example, a self-driving scenario. An example interaction method includes obtaining, by a first roadside device, first feature information of a traffic participant; and indicating, by a second roadside device, second feature information and a global identifier to the first roadside device. If the first feature information matches the second feature information, the first roadside device uses the global identifier to indicate the first feature information. A further interaction method includes configuring, by a server, a global identifier of a traffic participant based on feature information reported by a roadside device.

Abstract: An audio object including audio content and object metadata is received. The object metadata indicates an object spatial position of the audio object to be rendered by audio speakers in a playback environment. Based on the object spatial position and source spatial positions of the audio speakers, initial gain values for the audio speakers are determined. The initial gain values can be used to select a set of audio speakers from among the audio speakers. Based on the object spatial position and a set of source spatial positions at which the set of audio speakers are respectively located in the playback environment, a set of non-negative optimized gain values for the set of audio speakers is determined. The audio object at the object spatial position is rendered with the set of optimized gain values for the set of audio speakers.

Abstract: This application relates to an image acquisition method performed by a computer device. The method includes: displaying a mapping pattern corresponding to a key area of a target part of a target object in response to a pattern display operation triggered by the target object; changing a display state of the currently displayed mapping pattern when a relative position of the target part relative to an image acquisition element changes; and acquiring a key area image of the target part contactlessly by using the image acquisition element when the currently displayed mapping pattern matches a preset recognition pattern.

Abstract: Provided herein are an oral care additive, an oral care composition, a method of preparing the same, an oral care kit and use thereof. The main ingredient of the oral care additive contains one or more of nicotinic acid, nicotinamide or derivatives thereof to supplement and increase the level of ?-nicotinamide adenine dinucleotide in the oral cavity, and various vitamin and coenzyme may be included as well to complement the function of the main ingredient. The additives and the application methods of the present invention retain the functionality of the existing oral care products while adding new efficacy, thereby providing a more comprehensive oral health management experience for the user.

Abstract: A calibration and verification system for a directional sensor, including an industrial control computer and a directional sensor, wherein the industrial control computer is connected to a sensor signal acquisition system, a first triaxial Helmholtz coil and a second triaxial Helmholtz coil, respectively, wherein a heating calibration turntable is disposed in the first triaxial Helmholtz coil and configured to heat and calibrate the directional sensor, and wherein a high-precision inclination and azimuth test turntable is disposed in the second triaxial Helmholtz coil and configured to verify the directional sensor.

Abstract: A method, system and apparatus are disclosed. In one or more embodiments, a network node is configured to communicate with a wireless device, WD, the network node configured to, and/or comprising a radio interface and/or comprising processing circuitry configured to participate in in-band signaling carrying control information and corresponding payload in a physical channel (e.g., shared physical channel) where, optionally, the control information is associated with a granularity in indicating at least one group of Code Blocks, CBG.

Abstract: A low density parity check (LDPC) channel encoding method is used in a wireless communications system. A communication device encodes an input bit sequence by using an LDPC matrix, to obtain an encoded bit sequence for transmission. The LDPC matrix is obtained based on a lifting factor Z and a base matrix. The base matrix may be one of eight exemplary designs. The encoding method can be used in various communications systems including fifth generation (5G) telecommunication systems, and can support various encoding requirements for information bit sequences with different code lengths.

Abstract: Embodiments relate to systems and processes for digital document services, having at least a processor and a non-transient data memory storage, the data memory storage containing machine-readable instructions for execution by the processor, the machine-readable instructions configured to, when executed by the processor, provide a document service. The document service can extract data from a plurality of source systems; load and store the data at a data hub implemented by a non-transient data store; receive a request to generate a document package at the data hub, the request indicating a target unit; generate and store the document package using a subset of data from the data at the data hub, the document package having at least one electronic signature request; detect a signature event at the data hub; and transmit the document package to the target unit.

Abstract: This application provides a satellite communication device and method, the method including obtaining ephemeris information of a satellite in a satellite network, the ephemeris information of the satellite in the satellite network including one or more a beam parameter of the satellite in the satellite network, a physical resource of the satellite in the satellite network, or scheduling information of the satellite in the satellite network, generating a first message based on the ephemeris information of the satellite in the satellite network, where the first message includes ephemeris information of one or more satellites that serve a terminal device, and sending the first message when the terminal device performs random access, to implement communication between the terminal device and the one or more satellites.

Abstract: The present disclosure relates to a cover plate, a display panel and a display terminal. The cover plate includes a first region and a second region surrounding the first region. The second region includes a plurality of side cover plate regions and at least one corner opening region located between two adjacent side cover plate regions. The cover plate includes at least one buffer portion which is filled in the corner opening region.