Abstract: The present invention provides a dual-substrate antenna package structure and a method for manufacturing the same. The package structure includes a main substrate and at least one antenna substrate. The antenna substrate is provided on a pad of the main substrate by an array of solder balls placed on the antenna substrate, at least one chip is electrically connected to the main substrate, and metal wiring provided on the main substrate electrically connects the pad to the chip. The array of solder balls includes support solder balls and conventional solder balls, and the support solder balls have a melting point high than 250° C. A spacing distance between the antenna substrate and the main substrate can be kept stable during the reflow soldering process and subsequent processes because the support solder balls having the high melting point can always maintain the stability of the structure during the reflow soldering process.

Abstract: Aspects of the disclosure are directed to a method for use on a blockchain network that includes an accounting node subnetwork having accounting nodes configured to record a data block onto a blockchain and a service node having service nodes configured to verify data blocks recorded by the accounting nodes onto the blockchain. The method can include generating a signature based on transaction information to be included in a data block to be added onto the blockchain by using a key specific to the accounting node. The method can further include adding the transaction information and the generated signature to the data block and adding the data block onto the blockchain, and transmitting the signature to the service nodes in the service node subnetwork, so that the service nodes perform signature verification on the signature based on the key specific to the accounting node.

Abstract: A method for monitoring a Physical Downlink Control Channel (PDCCH), including: a handover command transmitted by a first network device is received, wherein the handover command is used to instruct the terminal device to switch from a first cell corresponding to the first network device to a second cell corresponding to a second network device; and a PDCCH transmitted by the second network device is monitored based on a Control Resource Set (CORESET) associated with a target Bandwidth Part (BWP) of the second cell.

Abstract: The present invention relates to a CHA-like zeolitic material having an X-ray diffraction pattern including the following peaks in Table 1 in its as-synthesized form, and to a process for preparing the zeolitic material, and use of the zeolitic material for the selective catalytic reduction of NOx.

Abstract: This application provides picture or audio encoding and decoding methods and apparatuses, and relates to the field of artificial intelligence (AI)—based picture or audio encoding and decoding technologies, and specifically, to the field of neural network-based picture feature map or audio feature variable encoding and decoding technologies. The encoding method includes: obtaining a to-be-encoded target, where the to-be-encoded target includes a plurality of feature elements, and the plurality of feature elements include a first feature element. The method further includes: obtaining a probability estimation result of the first feature element; determining, based on the probability estimation result of the first feature element, whether to perform entropy encoding on the first feature element; and performing entropy encoding on the first feature element only when it is determined that entropy encoding needs to be performed on the first feature element.

Abstract: A system for ultra-high temperature in-situ fretting fatigue experiment, includes a heat preservation cover defining a, a heating device arranged in the mounting space, a first test sample, a second test sample, and a clamping device arranged in the mounting space. The first test sample and the second test sample are arranged at an upper end of the heating device along a horizontal direction. A mortise is formed at an end of the first test sample facing towards the second test sample. A tenon mating with the mortise is formed at an end of the second test sample facing towards the first test sample. The clamping device is configured to be clamped at two ends of the mated first test sample and second test sample and to apply a periodically reciprocating loading along a length direction of the first test sample and the second test sample.

Abstract: A fluidized solidified soil based on gold tailings includes the following raw materials in parts by mass: 75 parts to 80 parts of gold tailings, 5.2 parts to 13 parts of a dispersant solution, and 9 parts to 16 parts of a solidifying material. A preparation method includes the following steps: mixing the gold tailings with the dispersant solution, and then stirring to obtain a suspension slurry of the gold tailings; and adding the solidifying material, and stirring to obtain the fluidized solidified soil. In the present disclosure, the gold tailings are used as a main material, combined with a special dispersant solution and a special solidifying material, and a fluidized solidified soil is prepared with fluidity suitable for pumping and a certain strength after hardening. The fluidized solidified soil prevents the pollution caused by gold tailings landfilling, and can be used as a filling material for various construction projects.

Abstract: The present invention provides a dual-substrate antenna package structure and a method for manufacturing the same. The package structure includes a main substrate and at least one antenna substrate. The antenna substrate is provided on a pad of the main substrate by an array of solder balls placed on the antenna substrate, at least one chip is electrically connected to the main substrate, and metal wiring provided on the main substrate electrically connects the pad to the chip. The array of solder balls includes support solder balls and conventional solder balls, and the support solder balls have a melting point high than 250° C. A spacing distance between the antenna substrate and the main substrate can be kept stable during the reflow soldering process and subsequent processes because the support solder balls having the high melting point can always maintain the stability of the structure during the reflow soldering process.

Abstract: A heat shield comprises a first thermal insulation section and a second thermal insulation section, wherein the second thermal insulation section is axially connected to the first thermal insulation section, and the thermal insulation performance of the second thermal insulation section is lower than that of the first thermal insulation section. The heat shield is advantageous in that it cannot only achieve a good integral thermal insulation effect, but also protect thermal-fatigue weak zones of an exhaust system shell, so as to prolong the operating life of the exhaust system and reduce the costs of maintenance and repair for an automobile, etc.

Abstract: The present invention relates to an integrated package structure. The integrated package structure includes a main substrate, a first module, a second module, a cavity element and a large-size device, wherein the main substrate includes a first surface of the main substrate and a second surface of the main substrate opposite to each other; the first module and the second module are stacked; the first module and the second module which are stacked, the cavity element and the large-size device are horizontally arranged on the first surface of the main substrate, and are respectively electrically connected to the main substrate. Owing to this arrangement, the demand of a current integrated package structure for a further high-density, miniaturized, multi-dimensional and multi-demand layout design can be met.

Abstract: A wireless roaming method and related system are provided. The method is applicable to an access control device and includes: determining a moving direction of a mobile device that is in a first connection connecting with a first access point; establishing, by a second access point and in response to a determination that the moving direction meets a preset condition, a second connection connecting the mobile device with the second access point, and disconnecting, by the first access point, the first connection. The first access point and the second access point are both connected to the access control device, and have a same static address or a same Identity Resolving Key. This method allows the mobile device to securely and seamlessly roam within the coverage areas of different access points.

Abstract: A heat shield comprises a first thermal insulation section and a second thermal insulation section, wherein the second thermal insulation section is axially connected to the first thermal insulation section, and the thermal insulation performance of the second thermal insulation section is lower than that of the first thermal insulation section. The heat shield is advantageous in that it cannot only achieve a good integral thermal insulation effect, but also protect thermal-fatigue weak zones of an exhaust system shell, so as to prolong the operating life of the exhaust system and reduce the costs of maintenance and repair for an automobile, etc.

Abstract: A method for supporting wireless roaming among coverage areas of a plurality of access points may comprise detecting, by a first access point of the plurality of access points, signal strength of signals from a client device that is wirelessly connected to the first access point; comparing the signal strength with a threshold, and if the signal strength is less than the threshold, disconnecting, by the first access point, the client device from the first access point; transmitting, by the first access point, a signal indicating the disconnection of the client device to an access controller; updating, by the access controller, connection status information to indicate the disconnection of the client device from the first access point; transmitting, by the access controller, the connection status information of the client device to the plurality of access points; and connecting the client device with a second access point of the plurality of access points.

Abstract: A method for supporting wireless roaming among coverage areas of a plurality of access points may comprise detecting, by a first access point of the plurality of access points, signal strength of signals from a client device that is wirelessly connected to the first access point; comparing the signal strength with a threshold, and if the signal strength is less than the threshold, disconnecting, by the first access point, the client device from the first access point; transmitting, by the first access point, a signal indicating the disconnection of the client device to an access controller; updating, by the access controller, connection status information to indicate the disconnection of the client device from the first access point; transmitting, by the access controller, the connection status information of the client device to the plurality of access points; and connecting the client device with a second access point of the plurality of access points.

Abstract: A method for supporting wireless roaming among coverage areas of a plurality of access points may comprise detecting, by a first access point of the plurality of access points, signal strength of signals from a client device that is wirelessly connected to the first access point; comparing the signal strength with a threshold, and if the signal strength is less than the threshold, disconnecting, by the first access point, the client device from the first access point; transmitting, by the first access point, a signal indicating the disconnection of the client device to an access controller; updating, by the access controller, connection status information to indicate the disconnection of the client device from the first access point; transmitting, by the access controller, the connection status information of the client device to the plurality of access points; and connecting the client device with a second access point of the plurality of access points.

Abstract: Various data (e.g., audio) relay devices and methods are disclosed. An exemplary data relay device may comprise a first chip configured to wirelessly connect to one or more physical sink devices, and a second chip. The second chip may be configured to create one or more virtual sink devices configured to be wirelessly detectable by one or more physical source devices, in response to the one or more physical source devices wirelessly connecting to the second chip, obtain data from the one or more physical source devices, and transmit the data to the first chip, causing the first chip to relay the data to the one or more physical sink devices.

Abstract: A method for supporting wireless roaming among coverage areas of a plurality of access points may comprise detecting, by a first access point of the plurality of access points, signal strength of signals from a client device that is wirelessly connected to the first access point; comparing the signal strength with a threshold, and if the signal strength is less than the threshold, disconnecting, by the first access point, the client device from the first access point; transmitting, by the first access point, a signal indicating the disconnection of the client device to an access controller; updating, by the access controller, connection status information to indicate the disconnection of the client device from the first access point; transmitting, by the access controller, the connection status information of the client device to the plurality of access points; and connecting the client device with a second access point of the plurality of access points.

Abstract: Various data (e.g., audio) relay devices and methods are disclosed. An exemplary data relay device may comprise a first chip configured to wirelessly connect to one or more physical sink devices, and a second chip. The second chip may be configured to create one or more virtual sink devices configured to be wirelessly detectable by one or more physical source devices, in response to the one or more physical source devices wirelessly connecting to the second chip, obtain data from the one or more physical source devices, and transmit the data to the first chip, causing the first chip to relay the data to the one or more physical sink devices.

Abstract: A methodology of applying storage and logistics center model to achieve business data exchange between systems, is based on the storage logistics center model, establishes data storage management center, which receives and saves the data in each business system and sends data extraction request to the corresponding data; Conducts a detailed checking and verification action in the sending and receiving process of aforementioned data storage management center. Comparing with the existing technology and according to the empirical test, the data delivery stem that is based on fragmented data transportation of the logistics center model (the most typical system in the concurrent technology) shows that: performance is increased by 10%, resource consumption is reduced by 30%, system failure rate has dropped 20%, and each process can be controlled.