Abstract: Embodiments of the disclosure provide a Bluetooth network, a communication method, an apparatus, and a storage medium thereof. In the embodiments of the disclosure, a Bluetooth network comprises a Bluetooth node configured with a forwarding capability and serving as a non-leaf node, and a Bluetooth node functioning in a Bluetooth advertising mode to serve as a leaf node. Each leaf node is connected to at least one of one or more non-leaf nodes. Via the forwarding capability of the non-leaf node, the leaf node communicates with other leaf nodes or non-leaf nodes not within its signal coverage, thereby extending a communication range of a Bluetooth node.

Abstract: Examples are disclosed that relate to calibration data related to a determined alignment of sensors on a wearable display device. One example provides a wearable display device comprising a frame, a first sensor and a second sensor, one or more displays, a logic system, and a storage system. The storage system comprises calibration data related to a determined alignment of the sensors with the frame in a bent configuration and instructions executable by the logic system. The instructions are executable to obtain a first sensor data and a second sensor data respectfully from the first and second sensors, determine a distance from the wearable display device to a feature based at least upon the first and second sensor data using the calibration data, obtain a stereo image to display based upon the distance from the wearable display device to the feature, and output the stereo image via the displays.

Abstract: The present disclosure discloses a method for delivering promotion information. A delivery server obtains a set of promotion-information-items-to-be-delivered for a user, obtains a delivery-recommendation-degree corresponding to the user according to each of promotion-information-items-to-be-delivered in the set of promotion-information-items-to-be-delivered, determines, according to the delivery-recommendation-degree, one or more target promotion-information-items from the set of promotion-information-items-to-be-delivered; and delivers the target promotion-information-items to a user equipment corresponding to the user.

Abstract: Embodiments of the present disclosure provide a service provision method, a device, and a storage medium. In the embodiments of the present disclosure, a network management service user (such as a third-party server) can easily and quickly acquire a service related to a network management capability by performing capability exposure on a network management system in an operator network; further, in the process of exposing the network management capability, a permission access policy is added, so that the network management service user can only use a network management capability service with an access permission, which is favorable for reasonably exposing the network management service capability, so as to safely and efficiently provide the network management capability service, and improve the utilization efficiency of the network management capability in the operator network.

Abstract: The present disclosure discloses a multistage nanoreactor catalyst and preparation and application thereof, belonging to the technical field of synthesis gas conversion. The catalyst consists of a core of an iron-based Fischer-Tropsch catalyst, a transition layer of a porous oxide or porous carbon material, and a shell layer of a molecular sieve having an aromatization function. The molecular sieve of the shell layer can be further modified by a metal element or a non-metal element, and the outer surface of the molecular sieve is further modified by a silicon-oxygen compound to adjust the acidic site on the outer surface and the aperture of the molecular sieve, thereby inhibiting the formation of heavy aromatic hydrocarbons. According to the disclosure, the shell layer molecular sieve with a transition layer and a shell layer containing or not containing auxiliaries, and with or without surface modification can be prepared by the iron-based Fischer-Tropsch catalyst through multiple steps.

Abstract: Through further capability exposure of a network slice management system, an application server is enabled to request, from the network slice management system, a network slice template service or a network slice capability service in addition to the network slice service, thus making full use of the slice management capabilities and resources in the slice management system, which in turn enhances the efficiency in using slice management capabilities and resources.

Abstract: An integrated Fourier domain mode-locked optoelectronic oscillator and its application and a communication system are provided, which relates to the technical field of microwave photonics. The integrated Fourier domain mode-locked optoelectronic oscillator includes an optoelectronic chip and an electronic chip. The optoelectronic chip includes a laser, a modulator, an optical notch filter, and a photodetector coupled via an optical waveguide. The electronic chip includes an electrical amplifier and a power splitter coupled via a coplanar microwave waveguide. The volume, weight and power consumption of the Fourier domain mode-locked optoelectronic oscillator is greatly reduced by integrating all the devices on the chip. A tunable sweeping microwave signal output is realized, and the sweeping speed of the output signal is increased. The integrated Fourier domain mode-locked optoelectronic oscillator can be used in radars and communication systems.

Abstract: A method, an apparatus, an electronic device, and a storage medium for network communication are provided. A first network entity sends a first request message to a second network entity. The first request message includes at least one piece of first network parameter type information, and is used to enable the second network entity to be triggered to send a first message to a third network entity according to a preset event. The first message includes at least one portion of network parameter information corresponding to the first network parameter type information. The first network entity receives a first reply message returned by the second network entity in response to the first request message. Using the present disclosure, the first network entity can dynamically manage an instantiation of the third network entity, and the authority of the third network entity to obtain network parameters.

Abstract: The present application discloses a method, device, and system for providing security credentials to access a non-public network. The method includes receiving, by a terminal, an identifier of a first network and corresponding encryption information. The first network includes a non-public network. The encryption information includes encrypted security credentials for the first network. The terminal receives the identifier of the first network and the corresponding encryption information from a second network that is different from the first network. The method further includes decrypting, by the terminal, the encryption information. The encryption information is decrypted based at least in part on default credentials corresponding to the identifier of the first network. The security credentials of the first network are obtained based at least in part on the decrypted encryption information.

Abstract: An information delivery method is provided, including: determining a candidate information list in response to a page request sent by a user, where the candidate information list comprises a plurality pieces of information; generating ranks of the pieces of information in the candidate information list by sorting the plurality pieces of information in the candidate information list in accordance with a predetermined rule; acquiring a current average rank of the information of a designated type in the candidate information list based on the ranks of the pieces of information in the candidate information; and selecting designated delivery information from the information of the designated type, based on the current average rank of the information of the designated type and a historical average rank corresponding to the information of the designated type.

Abstract: The present disclosure provides a dimmer and a manufacturing method thereof, a backlight unit and a display device. The dimmer includes at least one brightness adjusting unit. Each brightness adjusting unit includes a reflective layer and an electrochromic layer stacked over each other, and the electrochromic layer is configured to be reversibly switchable between a transparent state and a color rendering state.

Abstract: A method and an apparatus for recording and verifying an Internet of Things (IoT) device, a method and an apparatus for identity authentication are provided. The recording and verification method includes receiving a recording request sent by a recording production line, the recording request being used for requesting an assignment of an identity identifier and a device key including a device private key and a device public key to an IoT device; verifying whether the recording request is legitimate, and assigning the identity identifier and the device key to the IoT device if affirmative; and sending the identity identifier and the device private key to the recording production line, so that the recording production line records the identity identifier and the device private key into the IoT device, thus improving the security of identity authentication of the IoT device, and reducing the cost of a platform side.

Abstract: Embodiments of the present disclosure disclose an optoelectronic oscillator including an optical chip and a microwave chip. The optical chip is implemented by fabricating different optoelectronic devices on an integrated optical substrate, comprising: a laser assembly; a mode selection device coupled to the laser assembly, and configured to receive the laser and perform mode selection; an optical delay module coupled to the mode selection device; and a detector coupled to the optical delay module. The microwave chip is a microwave integrated circuit formed by fabricating microwave elements on a semiconductor substrate, comprising: a microwave processing circuit configured to receive microwave signal and perform signal processing; a coupler coupled to the microwave processing circuit, and configured to provide a part of the microwave signal to a phase shifter and output the other part thereof; and a phase shifter configured to feed the phase-shifted microwave signal to the laser assembly.

Abstract: Embodiments of the disclosure provide a Bluetooth network, a communication method, an apparatus, and a storage medium thereof. In the embodiments of the disclosure, a Bluetooth network comprises a Bluetooth node configured with a forwarding capability and serving as a non-leaf node, and a Bluetooth node functioning in a Bluetooth advertising mode to serve as a leaf node. Each leaf node is connected to at least one of one or more non-leaf nodes. Via the forwarding capability of the non-leaf node, the leaf node communicates with other leaf nodes or non-leaf nodes not within its signal coverage, thereby extending a communication range of a Bluetooth node.

Abstract: Cellulose nanofibers (CNF) act as a dispersing agent to directly exfoliate graphite in an aqueous solution using sonication. The resulting suspension has graphite flakes, each having 2-20 monolayers, a relatively large lateral dimension, and a plurality of CNF decorating its surfaces and edges. The dispersing effect of the CNF allows the graphite-CNF suspension to be stored without degradation until desired use. The graphite-CNF suspension can be used to form various composite structures, such as by spraying, coating, pouring, extruding, or printing the suspension, and then drying the suspension. The resulting composite structures have improved tensile strength and toughness due to hydrogen bond interactions between the CNF and graphite.

Abstract: The present disclosure discloses a multistage nanoreactor catalyst and preparation and application thereof, belonging to the technical field of synthesis gas conversion. The catalyst consists of a core of an iron-based Fischer-Tropsch catalyst, a transition layer of a porous oxide or porous carbon material, and a shell layer of a molecular sieve having an aromatization function. The molecular sieve of the shell layer can be further modified by a metal element or a non-metal element, and the outer surface of the molecular sieve is further modified by a silicon-oxygen compound to adjust the acidic site on the outer surface and the aperture of the molecular sieve, thereby inhibiting the formation of heavy aromatic hydrocarbons. According to the disclosure, the shell layer molecular sieve with a transition layer and a shell layer containing or not containing auxiliaries, and with or without surface modification can be prepared by the iron-based Fischer-Tropsch catalyst through multiple steps.

Abstract: A package structure of an organic light emitting diode display panel includes a display substrate, a glass cover plate and a package portion. The display substrate and the glass cover are arranged opposite to each other. The package portion is provided between a non-display region of the display substrate and a portion of the glass cover plate corresponding to the non-display region. The display substrate includes organic light emitting diode elements. The organic light emitting diode elements are located in a sealed cavity enclosed by the display substrate, the glass cover plate and the package portion. The package portion includes a first concavo-convex structure provided at a surface of the display substrate facing the glass cover plate; a second concavo-convex structure provided at a surface of the glass cover plate close to the display substrate; and a package material is provided between the first concavo-convex structure and the second concavo-convex structure.

Abstract: The present disclosure discloses a multistage nanoreactor catalyst and preparation and application thereof, belonging to the technical field of synthesis gas conversion. The catalyst consists of a core of an iron-based Fischer-Tropsch catalyst, a transition layer of a porous oxide or porous carbon material, and a shell layer of a molecular sieve having an aromatization function. The molecular sieve of the shell layer can be further modified by a metal element or a non-metal element, and the outer surface of the molecular sieve is further modified by a silicon-oxygen compound to adjust the acidic site on the outer surface and the aperture of the molecular sieve, thereby inhibiting the formation of heavy aromatic hydrocarbons. According to the disclosure, the shell layer molecular sieve with a transition layer and a shell layer containing or not containing auxiliaries, and with or without surface modification can be prepared by the iron-based Fischer-Tropsch catalyst through multiple steps.

Abstract: The present disclosure provides a terminal, a base station and methods for communications between the terminal and the base station, and for the terminal to access a network. According to one exemplary method, a terminal sends a first message to a base station via a first channel, the first message being used to request access to a network. The terminal receives a second message from a first base station via a second channel, the second message including channel plan information for determining a first network connection plan. The terminal determines the first network connection plan according to the channel plan information and accesses the network via a second base station according to the first network connection plan. Channel use plan of the base station can be obtained through signaling interactions in the process of network connection. The terminal can determine whether the network can be accessed and access the network accordingly.

Abstract: Embodiments of the present disclosure disclose an optoelectronic oscillator including an optical chip and a microwave chip. The optical chip is implemented by fabricating different optoelectronic devices on an integrated optical substrate, comprising: a laser assembly; a mode selection device coupled to the laser assembly, and configured to receive the laser and perform mode selection; an optical delay module coupled to the mode selection device; and a detector coupled to the optical delay module. The microwave chip is a microwave integrated circuit formed by fabricating microwave elements on a semiconductor substrate, comprising: a microwave processing circuit configured to receive microwave signal and perform signal processing; a coupler coupled to the microwave processing circuit, and configured to provide a part of the microwave signal to a phase shifter and output the other part thereof; and a phase shifter configured to feed the phase-shifted microwave signal to the laser assembly.