Abstract: Disclosed is a dynamic network risk predicting method based on a graph neural network, which comprises the following steps: collecting network data firstly and constructing a network data sequence graph; extracting the time sequence of the network data sequence graph and obtaining a time sequence feature graph; extracting network attribute features, network structure features and network change features of the dynamic network; obtaining the representation vector of the network sequence graph by learning the representation vector; constructing the anomaly detection model and carrying out the dynamic network risk prediction.

Abstract: The disclosure provides a single-stage isolated bidirectional converter and a control method thereof. The converter includes: a first full-bridge circuit unit, a half-bridge circuit unit, a second full-bridge circuit unit, a phase-shift inductor unit, a transformer and a filter capacitor. The transformer includes a first winding and a second winding, and the first winding is provided with a center tap. The center tap is connected to the first port, two ends thereof are connected to the midpoints of the two bridge arms of the first full-bridge circuit unit through the phase-shift inductor unit, and two ends of the second winding are connected to the midpoints of the two bridge arms of the second full-bridge circuit unit. Two ends of the first full-bridge circuit unit are connected to two ends of the half-bridge circuit unit; two ends of the half-bridge circuit unit are connected to two ends of the filter capacitor.

Abstract: The disclosure provides a single-stage isolated bidirectional converter and a control method thereof. The converter includes: a first full-bridge circuit unit, a half-bridge circuit unit, a second full-bridge circuit unit, a phase-shift inductor unit, a transformer and a filter capacitor. The transformer includes a first winding and a second winding, and the first winding is provided with a center tap. The center tap is connected to the first port, two ends thereof are connected to the midpoints of the two bridge arms of the first full-bridge circuit unit through the phase-shift inductor unit, and two ends of the second winding are connected to the midpoints of the two bridge arms of the second full-bridge circuit unit. Two ends of the first full-bridge circuit unit are connected to two ends of the half-bridge circuit unit; two ends of the half-bridge circuit unit are connected to two ends of the filter capacitor.

Abstract: Method and apparatus are disclosed for publishing locational copyrighted watermarking video. According to some embodiments, a method for embedding location information into a video comprises: separating the video into at least one key frame and at least one in-between frame set corresponding to the at least one key frame; receiving location data for the at least one key frame; encrypting the location data for the at least one key frame based on a location private key; and embedding the encrypted location data into the at least one key frame.

Abstract: Embodiments of the invention generally relate to interconnection of overlay networks. The communication device is provided. The device comprises a first VTEP coupled to a first overlay network and a second VTEP coupled to a second overlay network, wherein the first and second overlay networks use a same virtual network identifier. The first VTEP is configured to receive, from the first overlay network, an address resolution request for a destination VM in the second overlay network, wherein the address resolution request contains an IP address of the destination VM. The second VTEP is configured to forward the address resolution request to the second overlay network, receive the address resolution response from the second overlay network and obtain the endpoint information associated with the destination VM from the address resolution response. The first VTEP is further configured to send the endpoint information to the first overlay network.

Abstract: Method and apparatus are disclosed for publishing locational copyrighted watermarking video. According to some embodiments, a method for embedding location information into a video comprises: separating the video into at least one key frame and at least one in-between frame set corresponding to the at least one key frame; receiving location data for the at least one key frame; encrypting the location data for the at least one key frame based on a location private key; and embedding the encrypted location data into the at least one key frame.

Abstract: A liquid-cooled self-excited eddy current retarder having two salient poles is provided. The liquid-cooled self-excited eddy current retarder may comprise a retarder rotor, a retarder stator, a retarder coil, a retarder generator and a control module. The retarder rotor may be a jagged turntable, and an axial cross section of the jagged turntable may be in an inverted h shape. Each of the two salient poles may be located at a respective one of two axial ends of the jagged turntable. The retarder rotor may be connectable to a transmission shaft, and an inner circle of the retarder stator may be coaxial with an outer circle of the retarder rotor. The retarder coil may be an independent coil and disposed between the two salient poles of the retarder rotor. The retarder coil may be affixed to the retarder stator.

Abstract: A self-excited eddy current liquid-cooled retarder is disclosed. The retarder pertains to an auxiliary braking device retarding a vehicle, and comprises a retarder rotor, a retarder stator, a control module and a generator unit. The retarder rotor comprises a retarder coil, an electromagnet core and a core cage. The retarder coil is wound on a coil frame. The electromagnet core is inserted into the coil frame. The electromagnet core, the retarder coil and the coil frame are evenly distributed on the circumference of the core cage. The retarder rotor is connected to a transmission shaft of an automobile. The inner circle of the retarder stator and the outer circle of the electromagnet core of the retarder rotor are coaxial. The generator unit comprises a generator exciting winding, a generator exciting magnetic pole, a generator armature winding and a generator armature core and is received in the retarder rotor.

Abstract: A wireless monitor voice indication parking indicator includes a transmitting part and a receiving part. The transmitting part includes a camera, an ultrasonic transmitting circuit, an ultrasonic receiving circuit, a power circuit, a voice indication circuit, a video superimposed circuit, a wireless transmitting circuit and a Single-chip Microcomputer (SCM) processor. The receiving part includes a power circuit, a wireless receiving circuit, an audio separation circuit, a control magnification output circuit, an alarm and a monitor. The power circuit supplies necessary stable voltage.

Abstract: A liquid-cooled self-excited eddy current retarder having two salient poles is provided. The liquid-cooled self-excited eddy current retarder may comprise a retarder rotor, a retarder stator, a retarder coil, a retarder generator and a control module. The retarder rotor may be a jugged turntable, and an axial cross section of the jugged turntable may be in an inverted h shape. Two projections at two sides of the jugged turntable may form two salient poles of the retarder rotor. The retarder rotor may be connectable to a transmission shaft, and an inner circle of the retarder stator may be coaxial with an outer circle of the retarder rotor. The retarder coil may be an independent coil and disposed between the two salient poles of the retarder rotor. The retarder coil may be affixed to the retarder stator.

Abstract: A self-excited eddy current liquid-cooled retarder is disclosed. The retarder pertains to an auxiliary braking device retarding a vehicle, and comprises a retarder rotor, a retarder stator, a control module and a generator unit. The retarder rotor comprises a retarder coil, an electromagnet core and a core cage. The retarder coil is wound on a coil frame. The electromagnet core is inserted into the coil frame. The electromagnet core, the retarder coil and the coil frame are evenly distributed on the circumference of the core cage. The retarder rotor is connected to a transmission shaft of an automobile. The inner circle of the retarder stator and the outer circle of the electromagnet core of the retarder rotor are coaxial. The generator unit comprises a generator exciting winding, a generator exciting magnetic pole, a generator armature winding and a generator armature core and is received in the retarder rotor.

Abstract: A self-adhesive fabric reinforced thermoplastic polyolefin compound waterproof membrane comprises a fabric reinforced thermoplastic polyolefin layer, a functional transition layer, a self-adhesive bitumen layer. Wherein, the fabric reinforced thermoplastic polyolefin layer comprises two thermoplastic polyolefin layers and a fabric reinforced layer between them. The thermoplastic polyolefin layer mainly comprises first-component and second-component thermoplastic polyolefins, filler, coupling agent, UV screener, antioxidant and light stabilizer. The present invention is provided with features of TPO membrane, such as environment friendly, easy processing, outstanding low-temperature performance, excellent weldability and durability, as well as advantages of self-adhesive bitumen membrane, such as easy installation, high bonding strength of substrate, watertight and fully adhered performance and reliable hot-air welding joints.

Abstract: A wireless monitor voice indication parking indicator includes a transmitting part and a receiving part. The transmitting part includes a camera, an ultrasonic transmitting circuit, an ultrasonic receiving circuit, a power circuit, a voice indication circuit, a video superimposed circuit, a wireless transmitting circuit and a Single-chip Microcomputer (SCM) processor. The receiving part includes a power circuit, a wireless receiving circuit, an audio separation circuit, a control magnification output circuit, an alarm and a monitor. The power circuit supplies necessary stable voltage.

Abstract: The vehicle reversing radar alarm of this invention pertains to the field of alarming device and particularly relates to a vehicle reversing radar alarm for cars. The vehicle reversing radar alarm consists of a frame mount, a camera assembly, a support means for camera, mounting holes for ultrasonic sensors, a circuit board and a rear cover. The ultrasonic sensors are mounted into the mounting holes for ultrasonic sensors arranged on the frame mount. The camera assembly is mounted into the mounting holes for camera assembly arranged on the frame mount. The support means for camera covers the camera assembly and is fixed on the frame mount by screws. There are rotation axes at both ends of the camera assembly and the camera assembly can rotate together with the rotation axes. This invention has a simple structure and a reasonable design, and it is easy to mount it and convenient to use it.

Abstract: The vehicle reversing radar alarm of this invention pertains to the field of alarming device and particularly relates to a vehicle reversing radar alarm for cars. The vehicle reversing radar alarm consists of a frame mount, a camera assembly, a support means for camera, mounting holes for ultrasonic sensors, a circuit board and a rear cover. The ultrasonic sensors are mounted into the mounting holes for ultrasonic sensors arranged on the frame mount. The camera assembly is mounted into the mounting holes for camera assembly arranged on the frame mount. The support means for camera covers the camera assembly and is fixed on the frame mount by screws. There are rotation axes at both ends of the camera assembly and the camera assembly can rotate together with the rotation axes. This invention has a simple structure and a reasonable design, and it is easy to mount it and convenient to use it.