Abstract: A method and device for controlling a DCDC converter, used for a hybrid electric vehicle and relating to the technical field of vehicle control. The method comprises: according to an output end current limit value and an actual voltage value, acquiring a first preset value corresponding to an input end power; according to the maximum discharge power of a high-voltage battery and the actual discharge power of an electric motor, acquiring a second preset value corresponding to the input end power; and determining the minimum value in the first preset value and the second preset value as an input end target power limit value. Multiple combination working conditions of sufficient or insufficient power sources at the input end are considered.

Abstract: Disclosed is a high-precision dynamic real-time 360-degree omnidirectional point cloud acquisition method based on fringe projection. The method comprises: firstly, by means of the fringe projection technology based on a stereoscopic phase unwrapping method, and with the assistance of an adaptive dynamic depth constraint mechanism, acquiring high-precision three-dimensional (3D) data of an object in real time without any additional auxiliary fringe pattern; and then, after a two-dimensional (2D) matching points optimized by the means of corresponding 3D information is rapidly acquired, by means of a two-thread parallel mechanism, carrying out coarse registration based on Simultaneous Localization and Mapping (SLAM) technology and fine registration based on Iterative Closest Point (ICP) technology.

Abstract: A wriggle massager includes a soft rubber sleeve, and a massaging structure received in, the soft rubber sleeve and including a bracket, a driving member installed on the bracket, a snakelike transmission shaft and a bulge member, the driving member connected with the snakelike transmission shaft to control rotation of the snakelike transmission shaft. The snakelike transmission shaft includes at least one curve portion and the bulge member includes a transmission channel so that the snakelike transmission shaft is inserted into the transmission channel through one end of the transmission channel. A rotation contour of the at least one curve portion exceeds a radial contour of the transmission channel, so that the snakelike transmission shaft rotates to drive the bulge member to wriggle. The present disclosure provides that the snakelike transmission shaft rotates to drive the bulge member to wriggle for providing a new massage mode and improving users' experience.

Abstract: The present invention relates to a method and device for preparing an ultrathin metal lithium foil. With regard to the problems of lithium preparation processes in the prior art having a high lithium preparation reaction temperature, a low lithium recovery rate, low purity in collected lithium foils, a complicated process operation, etc., the present invention provides a method for preparing an ultrathin metal lithium foil, wherein firstly, a complex lithium salt is prepared, the complex lithium salt and a reducing agent are then subjected to a vacuum thermal reduction reaction so as to generate a metal vapor, the metal vapor is then subjected to vacuum distillation, and finally, vacuum evaporation is used to prepare the ultrathin metal lithium foil of the present invention.

Abstract: A message processing method and device, a storage medium, and an electronic device are provided. The method includes: acquiring a first message sent by an Ingress Process Engine (IPE) of a switch, and acquiring a second message sent by an Egress Process Engine (EPE) of the switch, a header of the first message includes data collected by an Inband Network Telemetry (INT), and the first message is the same as the second message; identifying the first message and the second message as a same message stream according to key information of a message header; and combining and reorganizing the first message and the second message identified as the same message stream into an INT report, and sending the INT report to a target device. The problem in the related art that network state monitoring at a protocol layer consumes a large amount of network bandwidth is solved.

Abstract: A method and device for controlling a DCDC converter, used for a hybrid electric vehicle and relating to the technical field of vehicle control. The method comprises: according to an output end current limit value and an actual voltage value, acquiring a first preset value corresponding to an input end power; according to the maximum discharge power of a high-voltage battery and the actual discharge power of an electric motor, acquiring a second preset value corresponding to the input end power; and determining the minimum value in the first preset value and the second preset value as an input end target power limit value. Multiple combination working conditions of sufficient or insufficient power sources at the input end are considered.

Abstract: The invention discloses a polymer with a low dielectric constant and a molecular structure design method capable of reducing the dielectric constant of the polymer. A straight-chain rigid group is introduced into a meta-position of a side group benzene ring or diphenyl chain segment structure by using the designability of a molecular chain side group of a polymer; and a free volume hole with a larger size is formed in the material through loose rotation of the side group benzene ring to inhibit molecular chain deposition, thereby reducing the dielectric constant of the polymer material. The design method is simple, is suitable for a common high-performance polymer material, can be applied to preparation of a low-dielectric polymer material, is suitable for the field of new and high technology industries such as electronics, microelectronics, information and aerospace and is especially suitable for the field of super-large-scale integrated circuits.

Abstract: Systems and methods for a hybrid system-on-chip usable for predicting performance and power requirements of a host server include a big cores module, including central processing units, for receiving and pre-processing performance and power metrics data of the host server and to allocate computing resources, a small cores module, including massively parallel processing units, for mapping each instance associated with host server in the performance and power metrics data to a corresponding massively parallel processing unit based on the allocated computing resources for a per-instance metrics calculation, and an artificial intelligence (AI) accelerator for calculating performance and power prediction results based on the per-instance calculations from the small cores module.

Abstract: The present disclosure discloses a novel organic electroluminescent compound and an organic electroluminescent device, the novel organic electroluminescent compound having a structural formula as follows: where L1 and L2 are phenylene, and L1 and L2 can be connected with each other through a single bond or are not connected; R1 and R2 are each independently hydrogen, deuterium, a cyano group, a substituted or unsubstituted C1-C20 straight or branched alkyl group, a substituted or unsubstituted C3-C20 cycloalkyl group, a substituted or unsubstituted C3-C20 heterocycloalkyl group, a substituted or unsubstituted C6-C30 aromatic hydrocarbon group, or a substituted or unsubstituted C5-C30 heteroaromatic hydrocarbon group; R3 is a substituted or unsubstituted C6-C30 aromatic hydrocarbon group, or a substituted or unsubstituted C5-C30 heteroaromatic hydrocarbon group; and m and n are each independently 0 or 1.

Abstract: Systems and methods for a hybrid system-on-chip usable for predicting performance and power requirements of a host server include a big cores module, including central processing units, for receiving and pre-processing performance and power metrics data of the host server and to allocate computing resources, a small cores module, including massively parallel processing units, for mapping each instance associated with host server in the performance and power metrics data to a corresponding massively parallel processing unit based on the allocated computing resources for a per-instance metrics calculation, and an artificial intelligence (AI) accelerator for calculating performance and power prediction results based on the per-instant calculations from the small cores module.

Abstract: The present invention provides a novel organic compound, a material comprising the same for organic electroluminescence devices, and an organic electroluminescence device comprising the material. The organic compound provided in the present invention is useful in organic electroluminescence devices as a hole injection layer material, a hole transport layer material, an electron blocking layer material, and an emission layer material such as green and red phosphorescent host material, and can reduce the drive voltage, and increase the luminous efficiency, luminance, thermal stability, color purity and service life of the devices.

Abstract: The present invention provides a novel organic compound of General Formula 1, a material comprising the same for organic electroluminescence devices, and an organic electroluminescence device comprising the material. The organic compound of the present invention is useful in organic electroluminescence devices as a hole injection layer substance, a hole transport layer substance, an electron blocking layer substance, and an emission layer substance such as green and red phosphorescent host substance, and when used in the organic electroluminescence devices, can reduce the drive voltage, and increase the luminous efficiency, luminance, thermal stability, color purity and service life of the devices.

Abstract: The present invention provides a spiro compound of General Formula 1, and use thereof in the fields of electronic materials, fine chemistry, and medical science. Further, the present invention also provides an organic electroluminescence device fabricated by using the spiro compound of General Formula 1. When used in an organic electroluminescence device, the compound of General Formula 1 provided in the present invention is capable of reducing the drive voltage, and increasing the luminous efficiency, brightness, thermal stability, color purity, and service life of the device.

Abstract: The present invention provides an organic electroluminescent compound and an organic electroluminescent device using the organic electroluminescent compound, the compound has the following structural formula: wherein R1, R2 and R4 are, each independently, selected from a group consisting of a hydrogen atom, a C1-C20 linear or branched alkyl group, a substituted or unsubstituted N-(phenylmethyl)imino group, a phenyl group, phenylamine, diphenylamine, phenyl pyridinylamine, bipyridinylamine, phenyl naphthylamine, binaphthylamine, phenyl phenanthrylamine, biphenanthrylamine, phenyl anthrylamine, bianthrylamine, phenanthridine, biphenyl, a pyridyl group, a pyrimidinyl group, a quinolinyl group and a triazinyl group; R3 is selected from a group consisting of hydrogen atom, a C1-C10 linear or branched alkyl group, a substituted or unsubstituted N-(phenylmethyl)imino group, a phenyl group, phenylamine, diphenylamine, phenyl pyridinylamine, bipyridinylamine, phenyl naphthylamine, binaphthylamine, phenyl phenanthr

Abstract: The present invention provides an organic electroluminescent compound and an organic electroluminescent device using the organic electroluminescent compound, the compound has the following structural formula: wherein R1, R2 and R4 are, each independently, selected from a group consisting of a hydrogen atom, a C1-C20 linear or branched alkyl group, a substituted or unsubstituted N-(phenylmethyl)imino group, a phenyl group, phenylamine, diphenylamine, phenyl pyridinylamine, bipyridinylamine, phenyl naphthylamine, binaphthylamine, phenyl phenanthrylamine, biphenanthrylamine, phenyl anthrylamine, bianthrylamine, phenanthridine, biphenyl, a pyridyl group, a pyrimidinyl group, a quinolinyl group and a triazinyl group; R3 is selected from a group consisting of hydrogen atom, a C1-C10 linear or branched alkyl group, a substituted or unsubstituted N-(phenylmethyl)imino group, a phenyl group, phenylamine, diphenylamine, phenyl pyridinylamine, bipyridinylamine, phenyl naphthylamine, binaphthylamine, phenyl phenanthr

Abstract: A dispelling pen including a pen case and a pen head connected with the pen case, wherein at least one accommodation cavity for storing a dispelling solution is disposed in the pen case. The accommodation cavity is connected with the pen head via a pipeline. A switch control valve is disposed on the pipeline. The dispelling pen need not frequently dip in the dispelling solution, thereby avoiding fragmentation and circuit scratch due to the dispelling pen's repeated contact with the substrate while increasing convenience significantly, and increasing the security of the substrate at the time of dispelling.

Abstract: A blue fluorescence dopant is characterized by the following structural formula: in which R1, R2, R3, R4, R5 and R6 are, each independently, selected from, a hydrogen atom, a C1-C10 linear or branched alkyl group, a C1-C20 linear or branched alkyl group, a substituted or unsubstituted N-(phenylmethyl)imino group, a phenyl group, phenylamine, diphenylamine, phenyl pyridinylamine, bipyridinylamine, phenyl naphthylamine, binaphthylamine, phenyl phenanthrylamine, biphenanthrylamine, phenyl anthrylamine, bianthrylamine, phenanthridine, biphenyl, a pyridinyl group, a pyrimidinyl group, a quinolyl group and a triazinyl group. The blue fluorescence dopant disclosed in the present invention may facilitate to lower driving voltage and increase efficiency, brightness, heat stability, color purity, lifetime, etc. Further, an organic electroluminescent device using the blue fluorescence dopant has excellent performances of high efficiency and long lifetime.