Abstract: An acoustic monitoring system and method for the health status of an offshore wind turbine and an ocean wave are provided. The acoustic monitoring system includes a first laser transmitter, a second laser transmitter, a telephoto camera provided at a hub, a vibration detection sensor provided on a tower of a wind turbine, and four acoustic detection sensors arranged at an interval of 90° along the circumference of the tower. The first and second laser transmitters are arranged at the bottom of a nacelle of the wind turbine and emit laser lights vertically downward. The first laser transmitter, the second laser transmitter, the telephoto camera, the vibration detection sensor, and the acoustic detection sensors are connected to a data acquisition and conversion module through a transmission module. The acoustic monitoring system combines laser light detection with acoustic signal feature detection to improve stability and safety of the offshore wind turbine.

Abstract: Systems, methods, and related technologies for clustering are described. Network traffic is accessed from a network and the network may be associated with a plurality of entities. Behavior associated with each entity of the plurality of entities may be determined. The behavior may be determined based one or more communications associated with each entity. A processing device may be used to determine one or more clusters of entities based on entities having similar behavior. A cluster may comprise one or more entities with similar behavior. One or more anomalies may be determined based on the one or more clusters and storing data associated with at least one of the one or more clusters and the one or more anomalies may be stored.

Abstract: The present invention disclosed a crystal form of pyrazine-2(1H)-ketone compound and a preparation method therefor. Specifically disclosed is a method for preparing a compound of formula (II) and a crystal form thereof.

Abstract: An RF impedance measurement circuit includes a sensing capacitor connectable with an RF signal path; a first amplitude detector and a first frequency divider, each coupled, with the measurement circuit in operation, to the RF signal path at a first terminal of the sensing capacitor; a second amplitude detector and a second frequency divider, each coupled, with the measurement circuit in operation, to a second terminal of the sensing capacitor; and a phase detection circuit connected to an output of the first frequency divider and to an output of the second frequency divider.

Abstract: Disclosed is a method for preparing a pyrrolidinyl urea derivative, which acts as a TrkA inhibitor, and further disclosed are an intermediate compound of a compound of formula (I) and a preparation method therefor.

Abstract: Provided are a crystal of a compound of formula (I), salt thereof, a crystal of the salt thereof, and a preparation method for the crystal. Also comprised are applications of the compound and the crystal in preparation of drugs for treating IRAK4-related diseases.

Abstract: The disclosure describes a wearable, low-cost and low-power Electrical Impedance Tomography system for gesture recognition. The system measures cross-sectional bio-impedance using electrodes on wearers' skin. Using all-pairs measurements, the interior impedance distribution is recovered, which is then fed to a hand gesture classifier. This system also solves the problem of poor accuracy of gesture recognition often observed with other gesture recognition approaches.

Abstract: A system for PET image reconstruction is provided. The system may obtain PET data of a subject. The PET data may be associated with a plurality of coincidence events, which includes scattering events. The system may also generate a preliminary scatter sinogram relating to the scattering events based on the PET data. The system may also generate a target scatter sinogram relating to the scattering events by applying a scatter sinogram generator based on the preliminary scatter sinogram. The target scatter sinogram may have a higher image quality than the preliminary scatter sinogram. The system may further reconstruct a target PET image of the subject based on the PET data and the target scatter sinogram.

Abstract: The present disclosure describes one or more embodiments of a device for localized flow control. The device includes a plunger configured to slide along a longitudinal axis; a gate connecting to a proximal end of the plunger and configured to slide with the plunger; a spacer disposed along the longitudinal axis and on a same side with the gate relative to the plunger; a soft tube disposed in a gap between the spacer and a proximal end of the gate; and a plunger controller configured to slide the plunger between a closed position and an open position. In response to the plunger at the open position, the device is at an open state configured to allow a flow in the soft tube, and in response to the plunger at the closed position, the device is at a closed state configured to cut off the flow in the soft tube.

Abstract: Provided are a map data processing method and apparatus, and a storage medium, which relate to the field of data processing technology and, in particular, to artificial intelligence technology, for example, computer vision, map technology, and intelligent transportation. A specific implementation solution includes: processing landform coverage data according to a type of surface species coverage and a data processing rule associated with the type of surface species coverage to obtain a surface species coverage effect map; and generating a landform map according to the surface species coverage effect map and a reference map.

Abstract: A semiconductor device and fabrication method thereof are provided. The fabrication method include: providing a to-be-etched material layer; forming a plurality of discrete sacrificial layers on the to-be-etched material layer; forming first initial spacers on sidewalls of each of the discrete sacrificial layers. Each first initial spacer includes a first bottom region and a first top region on the first bottom region; removing the discrete sacrificial layers. The method further includes: removing the first top region of each first initial spacer to form a first spacer from each first bottom region; forming second spacers on sidewalls of each of the first spacers. Each second spacer includes a second bottom region and a second top region on the second bottom region; removing the first spacers; The method further includes: removing the second top regions by etching; and etching the to-be-etched material layer by using the second spacers as a mask.

Abstract: The present disclosure provides a word mining method and apparatus, an electronic device and a readable storage medium, and relates to the field of artificial intelligence technologies, such as natural language processing technologies, deep learning technologies, cloud service technologies, or the like.

Abstract: The present application discloses a method, an apparatus, a device, and a storage medium for intention recommendation, which relates to the field of big data, artificial intelligence, intelligent search, information flow and deep learning technologies in the field of computer technologies. A specific implementation scheme includes: receiving an intention query request carrying an intention keyword and a user identification, determining a first recommendation list according to the intention keyword and a pre-configured intention repository, where the intention repository includes at least one tree-shaped intention set, and each tree-shaped intention set includes at least one graded intention, processing intentions in the first recommendation list by using intention strategy information corresponding to the user identification to obtain a target recommendation list and output it.

Abstract: Systems, computer-readable media, and methods are disclosed for parallel data processing for service function chains with network functions spanning multiple servers. An example system includes a first server hosting a first network function of a service function chain, a second server hosting a second network function of the service function chain, a mirror function deployed in a first switch to replicate a plurality of packets received by the system and to send respective copies of the plurality of packets to the first network function and to at least one of the second network function and a third network function of the service function chain, and a merge function deployed in a second switch to merge respective outputs of the first network function and the at least one of the second network function and the third network function.

Abstract: Aspects of the disclosure provide a memory device. For example, the memory device can include a memory array, a bitline and a buffer. The memory array can include a plurality of memory strings. The memory strings can be divided into a first memory string group and a second memory string group. The bitline can include a first bitline segment coupled to the first memory string group and a second bitline segment coupled to the second memory string group. The first bitline segment can be disposed between the first memory string group and the buffer and be connected to the buffer through a first conduction path. The second bitline segment can be disposed between the second memory string group and the buffer and be connected to the buffer through a second conduction path.

Abstract: Disclosed are a photoresist composition, a pixel definition structure and a manufacturing method thereof, and a display panel. The photoresist composition includes an organic film-forming resin, a superhydrophobic polymerizable monomer, a polyfunctional crosslinkable polymerizable monomer, a photoinitiator, an additive and a solvent.

Abstract: Embodiments of the present disclosure provide a software defined network publish-subscribe system and method. The software defined network publish-subscribe system comprises a controller, an administrator controller, a sequencing subsystem and a message multi-backup cache subsystem. The controller is configured to process publish-subscribe transactions in clusters, and comprises sequencing nodes used for generating ordered serial numbers for messages and cache nodes for caching the messages. The administrator controller is configured to simultaneously perform functions of the controller and manage software-defined network. The sequencing subsystem is configured to realize the cooperative sequencing between the administrator controller and the sequencing nodes. The message multi-backup cache subsystem is configured to realize the consistency of the messages through the administrator controller and the cache nodes.

Abstract: A method (and structure and computer product) for an audiovisual source separation processing, including receiving video data including images of a plurality of sound sources, receiving an optical flow data of the video data, the optical flow data indicating motions of pixels between frames of the video data, and encoding the received video data into video localization data comprising information associating pixels in the frames of video data with different channels of sound.

Abstract: The present disclosure relates to an epitaxial wafer and a preparing method thereof, and a light-emitting device. The epitaxial wafer includes a substrate and an epitaxial stack, the epitaxial stack is disposed on the substrate, and the epitaxial stack includes a first epitaxial structure, a conductive adhesive layer, and a second epitaxial structure which are sequentially stacked in a direction parallel to an extension direction of the substrate. The first epitaxial structure is adhesively fixed to the second epitaxial structure through the conductive adhesive layer. The first epitaxial structure includes a first N-type semiconductor layer, a first active layer, and a first P-type semiconductor layer. The second epitaxial structure includes a second N-type semiconductor layer, a second active layer, and a second P-type semiconductor layer.

Abstract: Disclosed in the present application are a signal continuous coverage method, device and apparatus for a target area, and an antenna system.