Abstract: An antenna subarray and a base station antenna are disclosed. The antenna subarray includes a reflection plate, a plurality of radiation surfaces, and a ground plate of the plurality of radiation surfaces. The ground plate is vertically disposed on the reflection plate, and includes an integrated bottom end structure and a plurality of branch structures. The bottom end structure is connected to the reflection plate, and a top end of a branch structure is connected to a radiation surface. A feeder layer is disposed on a side of the ground plate, and a dielectric layer is spaced between the ground plate and the feeder layer. A first polarized feeder and a second polarized feeder are disposed on the feeder layer. The ground plate may have both a “ground” function of a polarized feeder and a “ground” function of a balun. The first polarized feeder and the second polarized feeder can implement both a function of a polarized feeder of the radiation surface and a function of a balun feeder.

Abstract: The present invention provides a method for eddy current thermography defect reconstruction based on electrical impedance tomography, first, obtaining a thermal reference image of temperature change with time by acquiring a thermogram sequence S of the specimen in the process of heating and fitting a curve for pixels of each location of the thermogram sequence S, then, creating a current matrix and a magnetic potential matrix, and calculating the satisfied conductivity distribution through iterations, so as a reconstructed image is obtained, then taking the low conductivity area of the reconstructed image as the defect profile, thus the defect profile is identified and quantified.

Abstract: Provided herein are systems and methods for providing a secure and efficient way to manage a data exchange's availability and manage the visibility of data listings of the data exchange. For example, the method may comprise specifying, by an exchange admin of the data exchange, a set of regions where the data exchange is available, each of the set of regions comprising one or more remote deployments. The method may further comprise specifying by a data provider, one or more of the set of regions where a data listing owned by the data provider is visible. Upon receiving a request to access the data listing from a remote deployment of the one or more regions, the data provider may determine whether to reject or fulfill the request. In response to determining that the request should be fulfilled, replicating data of the data listing to the remote deployment.

Abstract: Embodiments of this application disclose a method, an apparatus, and a system for information transmission in a PLC network. A switch control apparatus in embodiments of this application includes a switch and a coupling circuit. The coupling circuit is connected in parallel to two ends of the switch. When the switch is open, the coupling circuit transmits a first power line communication (PLC) signal to a gateway device. In embodiments of this application, when the switch is open, the PLC signal may be sent to the gateway device and information such as power off and tripping may be reported to the gateway device.

Abstract: Embodiments of this application provide an assembly verification method and an electronic device, and are applied to the field of computer technologies. The method includes: determining coordinates of a high-risk assembly position of each test point in a to-be-mounted component when the to-be-mounted component and a mounted component are assembled; determining, based on a three-dimensional tolerance dimension chain and the coordinates of a high-risk assembly position of each test point, a gap value distribution interval when the to-be-mounted component and the mounted component are assembled; and determining, based on the gap value distribution interval, whether there is an interference when the to-be-mounted component and the mounted component are assembled.

Abstract: This disclosure provides an antenna and a base station device. The antenna includes: a plurality of first frequency band antenna groups; a plurality of second frequency band radiating elements; and a reflection plate on which a reflection plate through hole is provided. Each first frequency band radiating element includes: a first balun structure and a first signal transmission structure, which pass through the reflection plate through hole. A phase shifter includes a first phase shifter cavity, a choke cavity, and a first feed network signal transmission structure located in the first phase shifter cavity. A part that is of the first balun structure and that is located on a second side of the reflection plate is located in the choke cavity.

Abstract: An antenna apparatus is provided to include a reflection plate, a radiating element disposed on the reflection plate and including a balun and at least two radiation arms, and a feeding network including a phase shifter. The balun includes a first feeding layer, a common ground layer, and a second feeding layer disposed in sequence. The phase shifter includes a feeding member. One end of the common ground layer is electrically connected to one of the radiation arms, and the other end of the common ground layer is electrically connected to the reflection plate. One end of the first feeding layer and one end of the second feeding layer are electrically connected to another one of the radiation arms, the other end of the first feeding layer is electrically connected to the feeding member, and the feeding member and the first feeding layer are an integrated member.

Abstract: A system includes a baseband component, an optical transceiver component, a first pluggable radio frequency component, and a wireless head-end component. The baseband component is configured to provide a radio frequency signal to the first pluggable radio frequency component through the optical transceiver component. The optical transceiver component is connected to the first pluggable radio frequency component through an optical fiber. The first pluggable radio frequency component is connected to the wireless head-end component in a plugging manner.

Abstract: Provided herein are systems and methods to provide a way to share metrics regarding shared data access and accesses associated with data providers for different data listings of the data exchange. For example, the method may comprise detecting one or more client interactions with a set of data listings of a data exchange, the set of data listings associated with one or data providers. The method may further comprise collecting metrics corresponding to the one or more client interactions. In addition, the method may share metrics relevant to the one or more data providers with the one or more data providers.

Abstract: A Power over Ethernet (PoE) power supply device, a PoE power supply system, an interface part, and a method for detecting an optical module, and pertaining to the field of communications technologies, where the PoE power supply device includes a photoelectric composite interface part, and wherein the photoelectric composite interface part integrates an optical interface and an electrical interface, and is configured to be coupled to a photoelectric composite module. The photoelectric composite interface part can complete PoE power supply while transmitting a signal.

Abstract: Provided herein are systems and methods to provide a way to share metrics regarding shared data access and accesses associated with data providers for different data listings of the data exchange. For example, the method may comprise detecting one or more client interactions with a set of data listings of a data exchange, the set of data listings associated with one or data providers. The method may further comprise collecting metrics corresponding to the one or more client interactions. In addition, the method may share metrics relevant to the one or more data providers with the one or more data providers.

Abstract: This application provides a coordinate system calibration method, an automatic assembly method, and an apparatus. In the coordinate system calibration method, measured values of a measured parameter of a target object are separately measured at two different calibration heights, and then a target calibration height that matches an actual value of the measured parameter is obtained based on the two different calibration heights and the corresponding measured values of the measured parameter. This solution is not only applicable to a planar object but also applicable to a curved object.

Abstract: Embodiments of the present disclosure describe techniques for monitoring usage of data listings and pricing data listings based thereon. Metadata comprising a pricing plan may be added to a data listing to generate a monetized data listing. The monetized data listing may be imported to the consumer account. The usage data of the monetized data listing and listing data of the monetized data listing may be exported to a data warehousing and analysis module. A usage level for a set of jobs processed using the monetized data listing during a current incremental interval of a current billing interval may be calculated and combined with a usage level of all previous incremental intervals of the current billing interval to generate a cumulative usage record. An invoice for the billing interval may be generated based on the cumulative usage record.

Abstract: The present disclosure provides a foot-deck device and a vehicle. The foot-deck device includes: a bracket; two deck assemblies oppositely disposed on the bracket, the two deck assemblies each including a deck and a rotating shaft, the rotating shafts being pivotally disposed on the bracket, and the decks being disposed on the rotating shafts; and a linkage mechanism, the rotating shaft of one deck assembly being coupled to the rotating shaft of the other deck assembly through the linkage mechanism, the linkage mechanism being used to cause the rotating shafts of the two deck assemblies to rotate synchronously and cause the decks of the two deck assemblies to rotate synchronously to respective folded positions or unfolded positions.

Abstract: Provided herein are systems and methods to provide a way to share metrics regarding shared data access and accesses associated with data providers for different data listings of the data exchange. For example, the method may comprise detecting one or more client interactions with a set of data listings of a data exchange, the set of data listings associated with one or data providers. The method may further comprise collecting metrics corresponding to the one or more client interactions. In addition, the method may share metrics relevant to the one or more data providers with the one or more data providers.

Abstract: Embodiments of the present disclosure describe techniques for monitoring usage of data listings and pricing data listings based thereon. Metadata comprising a pricing plan may be added to a data listing to generate a monetized data listing. The monetized data listing may be imported to the consumer account. The usage data of the monetized data listing and listing data of the monetized data listing may be exported to a data warehousing and analysis module. A usage level for a set of jobs processed using the monetized data listing during a current incremental interval of a current billing interval may be calculated and combined with a usage level of all previous incremental intervals of the current billing interval to generate a cumulative usage record. An invoice for the billing interval may be generated based on the cumulative usage record.

Abstract: An antenna subarray and a base station antenna are disclosed. The antenna subarray includes a reflection plate, a plurality of radiation surfaces, and a ground plate of the plurality of radiation surfaces. The ground plate is vertically disposed on the reflection plate, and includes an integrated bottom end structure and a plurality of branch structures. The bottom end structure is connected to the reflection plate, and a top end of a branch structure is connected to a radiation surface. A feeder layer is disposed on a side of the ground plate, and a dielectric layer is spaced between the ground plate and the feeder layer. A first polarized feeder and a second polarized feeder are disposed on the feeder layer. The ground plate may have both a “ground” function of a polarized feeder and a “ground” function of a balun. The first polarized feeder and the second polarized feeder can implement both a function of a polarized feeder of the radiation surface and a function of a balun feeder.

Abstract: This application discloses a power supply management system, and a power supply management method and apparatus applied to the system. The system includes a power sourcing equipment, a powered device, and a power supply line. The power sourcing equipment sends a second voltage to the powered device to determine a first voltage. The first voltage is a maximum power supply voltage agreed on by the power sourcing equipment and the powered device. The power sourcing equipment supplies power to the powered device based on the first voltage. In this application, the power sourcing equipment supplies power to the powered device based on the maximum power supply voltage that can be supported by the powered device, so that a loss on the power supply line is reduced.