Abstract: A method and an apparatus for determining a status of a network device are provided. A warning analysis device obtains a plurality of pieces of target key performance indicator KPI data of the network device within preset duration, processes the plurality of pieces of target KPI data to generate an element, forms the feature vector by using generated elements corresponding to the plurality of pieces of feature information, and analyzes the feature vector based on a preset warning analysis model, to determine the status of the network device. In this way, the status of the network device is determined by analyzing a plurality of pieces of target KPI data within a period of time, instead of by using only data at a moment. This improves the accuracy of determining the network device, so as to reduce an omission of a warning.

Abstract: Embodiments of active noise control (ANC) headphones and operating methods thereof are disclosed herein. In one example, a headphone includes a speaker, an internal microphone, and a processor. The speaker is configured to play an audio of interest based on an audio source signal. The internal microphone is configured to obtain a mixed audio signal including a noise signal and the audio of interest played by the speaker. The processor is configured to determine a first current system parameter of the headphone based on the mixed audio signal at a first time point, and determine if the first current system parameter of the headphone is higher than a predetermined threshold to determine if the headphone is worn by a user.

Abstract: A system according to the present disclosure may include a display unit, a processor communicatively coupled to the display unit and to an ultrasound imaging apparatus for generating an image from ultrasound data representative of a bodily structure and fluid flowing within the bodily structure. The processor may be configured to generate vector field data including axial and lateral (or transverse) velocity components of the fluid flowing within the bodily structure, calculate velocity profiles for a plurality of locations along a wall of the bodily structure based on the axial and lateral velocity components, generate wall shear stress (WSS) visualization data based, at least in part, on the velocity profiles, and cause the display unit to concurrently display the image including the bodily structure overlaid with the WSS visualization data.

Abstract: A communal computing device, such as an interactive digital whiteboard, can become unlocked if a user is near the device. The communal computing device may use a sensor such as a camera to capture images of a person and obtain an identifier from a personal device such as a smartphone. A cloud-based provider that is trusted by both the communal computing device and the personal device may associate both the image and the identifier of the personal device with the same user identity. Obtaining the user identity from multiple, different sources provides a secure technique for the communal computing device to recognize a user without the user directly interacting with the communal computing device. If the sensor no longer detects the user or the personal device is no longer detected, then the communal computing device may log off the user. The personal device may be used to confirm log off.

Abstract: Crystal forms A, B, C, D, E, F, G and H of a compound represented by formula I and a preparation method therefor, as well as medical uses for the various crystal forms and advantages thereof in various aspects.

Abstract: A calibration method for fringe projection systems based on plane mirrors. Firstly, two mirrors are placed behind the tested object. Through the reflection of mirrors, the camera can image the measured object from the front and other two perspectives, so as to obtain 360-degree two-dimensional information of the measured object. The projector projects three sets of phase-shifting fringe patterns with frequencies of 1, 8, and 64. The camera captures the fringe image to obtain an absolute phase map with a frequency of 64 by using the phase-shifting method and the temporal phase unwrapping algorithm. By using the calibration parameters between the projector and the camera, the absolute phase map can be converted into three-dimensional information of the measured object. Then, the mirror calibration is realized by capturing a set of 3D feature point pairs, so that the 3D information from different perspectives is transformed into a unified world coordinate system.

Abstract: A converter system includes a first switch, a sample-and-hold unit configured to provide a comparison signal based on a feedback signal when the first switch is switched off, and hold the comparison signal independent from the feedback signal when the first switch is switched on, and a pulse-width-modulation (PWM) generator, coupled between the sample-and-hold unit and first switch, configured to generate a PWM signal based on the comparison signal, wherein the first switch is configured to be switched on and off based on the PWM signal.

Abstract: It is suppressed of a deterioration of communication quality of a service link (SL) due to a local propagation-loss increasing part in a radio propagation path of a feeder link (FL) between an aerial-floating type communication relay apparatus and a gateway (GW) station. When the local propagation-loss increasing part occurs in the radio propagation path of the feeder link between the gateway station and the communication relay apparatus or when an occurrence of the propagation-loss increasing part is predicted, the communication relay apparatus is moved to a position capable of suppressing or avoiding the deterioration of communication quality due to the propagation-loss increasing part in the radio propagation path of the feeder link.

Abstract: This application discloses a model training method, apparatus, and system, and belongs to the AI field. The method includes: receiving a machine learning model sent by a first analysis device; and performing incremental training on the machine learning model based on a first training sample set, where feature data in the first training sample set is feature data from a local network corresponding to a local analysis device. In this application, a problem that the machine learning model obtained through offline training cannot be effectively adapted to a requirement of the local analysis device is resolved. Embodiments of this application are used to predict a classification result.

Abstract: A network congestion processing method includes performing Explicit Congestion Notification (ECN) marking on a packet using first ECN configuration information, obtaining first network status information indicating a network status when the first ECN configuration information is used; determining second ECN configuration information based on the first ECN configuration information and the first network status information; and performing ECN marking on the packet using the second ECN configuration information.

Abstract: A method realizes synchronous playing of audio data from an audio source by two or more wireless speakers. The method includes receiving at each of the wireless speakers first audio data packets sent by the audio source and determining a respective first time point for the receiving of the first audio data packets; processing the first audio data packets at each of the wireless speakers to generate respective second audio data packets, the second audio data packets each including audio data to be played with a fixed data length; setting a delayed play time and obtaining a playing time point at each of the wireless speakers, the obtaining of the playing time point being based on the respective first time point and the respective delayed play time; and playing the second audio data packets at each of the wireless speakers at the respective playing time point.

Abstract: A network congestion handling method includes obtaining network status information; determining, based on the network status information and an Explicit Congestion Notification (ECN) optimization model, a reference probability corresponding to recommended ECN configuration information; determining destination ECN configuration information based on the reference probability; and performing ECN marking on a packet by using the destination ECN configuration information.

Abstract: The embodiments provide an integrated circuit structure and a memory, and relates to the field of semiconductor memory technologies. The integrated circuit structure includes: a pad region, including a plurality of signal pads arranged along a target direction; and a circuit region arranged on one side of the pad region. The circuit region includes a plurality of input/output circuit modules arranged along the target direction and correspondingly connected to the signal pads. Each of the input/output circuit modules is configured to implement a sampling operation of an input signal and write a sampling result into a storage array, and read data stored in the storage array. A size of the circuit region along the target direction is smaller than that of the pad region along the target direction. According to the present disclosure, the performance of a write operation can be improved for the memory.

Abstract: This application belongs to the field of service orchestration and discloses a service orchestration method and apparatus, and a service provisioning method and apparatus. The method includes: obtaining a service template; obtaining a service identity, a service attribute, and a service policy that are entered by an operator and a default service parameter; filling in the options of the service template with the service attribute and the service policy that are entered by the operator and the default service parameter; associating the service template that is filled in with the service identity; and storing the service template that is associated with the service identity in a service type library, and publishing the service template to the user.

Abstract: An ultrasonic diagnostic imaging system acquires volume image flow data sets of subvolumes of a blood vessel over at least a cardiac cycle. Image data of the subvolumes is then aligned both spatially and temporally to produce 3D images of the volume flow of the blood vessel over a heart cycle. A volume flow profile curve is produced from the acquired volume image flow data sets. The subvolumes are scanned starting with the center of the blood vessel and proceeding outward therefrom. The blood vessel center may be designated manually by a user or automatically by the ultrasound system by Doppler or other methods. Each subvolume is scanned over a heart cycle, with the systolic phase in the temporal center of the acquisition interval. The subvolumes are scanned in synchronism with the heart cycle and the estimation of a heart cycle is updated during each subvolume data acquisition interval.

Abstract: Chlorogenic acid is used in the preparation of a drug for treating and/or preventing ocular inflammation. Chlorogenic acid can significantly alleviate symptoms of uveitis and scleritis, and has good treatment effects on ocular inflammation.

Abstract: A vehicular vision system includes a camera disposed at an in-cabin side of a windshield of a vehicle. Responsive to image processing at an ECU of captured frames of image data, the vehicular vision system detects an object present in a field of view of the camera. As the vehicle moves relative to the detected object, captured frames of image data are processed to determine a point of interest, present in multiple captured frames of image data, on the detected object. The vehicular vision system, via processing of captured frames of image data as the vehicle moves relative to the detected object, and based on the determined point of interest present in multiple captured frames of image data, estimates a location in three dimensional space of the determined point of interest and determines distance to the determined point of interest on the detected object.

Abstract: An assembly system warning device includes a first assembly member, a second assembly member, a main circuit, a power supply, an alarm device, a first circuit, a first switch, a second circuit and a second switch. When the first assembly member is located at an assembly position and the second assembly member is located at an idle position, the main circuit and the second circuit are connected in series to form a closed circuit. When the second assembly member is located at an assembly position and the first assembly member is located at an idle position, the main circuit and the first circuit are connected in series to form a closed circuit.

Abstract: Some embodiments of the present disclosure provide a hybrid power coupling mechanism and a vehicle. The hybrid power coupling mechanism includes an engine, a first output shaft, a generator, a driving motor, and a differential mechanism, wherein a rotating shaft of the engine is connected to an input shaft of the generator through the first output shaft, and an input shaft of the driving motor is connected to the differential mechanism in a speed-reducing manner through a planetary gear set. The vehicle includes a power storage battery, a motor controller and the foregoing hybrid power coupling mechanism. The problems of power interruption and high cost in mode switching of a hybrid power coupling mechanism of the existing vehicle are solved. The engine and the generator operate in an extended range mode, and the driving motor is decelerated by the planetary gear set and inputs power to the differential mechanism.

Abstract: Disclosed are a backlight module, a control method therefor and a display device, a driving method therefor. A backlight source is divided into light-emitting areas, and a current control circuit for driving the light-emitting area to emit light is configured for each light-emitting area. The light-emitting areas in the backlight module are arranged in one-to-one correspondence to the current control circuits.