Abstract: Provided is a three-phase system V2O3/VN/Mo2C nanoelectrode material, and a preparation method and application thereof. The nanoelectrode material comprises V2O3 particles, VN particles, and Mo2C particles. The V2O3 particles, VN particles, and Mo2C particles are interlaced in lattice stripes and are uniformly distributed. The mass ratio of the V2O3, VN and Mo2C is (1 to 4):(10 to 40):(4 to 16). The above-mentioned three kinds of nanoparticles are intertwined to form more incoherent interface area. The increase in the area of the incoherent interface area will cause more defects, so that more active sites are provided, and the hydrogen production performance is improved.

Abstract: The present disclosure relates to a virtual reality-based control method and apparatus, and an electronic device, and relates to the technical field of virtual reality. The method comprises: first monitoring image information captured by a camera for a user; identifying movement information of a target object in the image information; then, according to the movement information of the target object, displaying at least one interactive component model in a virtual reality space, and executing an interaction function event that is pre-bound to an interactive component model selected by the user. By means of applying the technical solution in the present disclosure, the technical problem that user control is easily influenced due to the buttons of an entity device being easily damaged can be effectively solved. A stronger technological sense can be brought to users, thereby enhancing the VR usage experience of users.

Abstract: Example methods and systems for blockchain-based licensing as a service are described. In one example, a computer system may receive a first request to obtain a first license associated with a first product from a first client system. In response, the computer system may (a) select a first blockchain from multiple blockchains, and (b) generate and store a first non-fungible token (NFT) on the first blockchain to issue the first license. Further, the computer system may receive a second request to obtain a second license associated with the first product or a second product from a second client system. In response, the computer system may (a) select a second blockchain from multiple blockchains, and (b) generate and store a second NFT on the second blockchain to issue the second license.

Abstract: Data usage by networking and data processing services is measured using a timeslot system. The timeslots have multiple states for collecting, collecting with processing, and expired timeslots. Data from upstream components is reported to local manager clusters and placed into timeslots corresponding to a timestamp of the data. Data can be reported from local managers to an entitlement service and/or a cloud service portal. Timing inconsistencies due to latency or processing time can be resolved by accounting for a timestamp difference using a timestamp difference value between the timeslot time and the reporting time. Data can be deduplicated, cleaned, and/or compacted. Data can be also be version controlled, with timeslots maintaining a version number. Complete and accurate tracking of data usage and associated costs is improved by reporting and collecting usage data using state-based timeslots.

Abstract: A dental floss is provided. The dental floss contains gum care actives for gum disease prevention and treatment without staining or bitter taste.

Abstract: The present disclosure relates to the technical field of space electric propulsion of spacecrafts, and discloses a thrust-quantitatively-controllable and self-neutralizable Kaufman ion thruster and a use method thereof. The Kaufman ion thruster includes a discharge chamber, a central cathode, a gas supply assembly, a steel magnetic assembly, an insulating barrier and a grid system, wherein the central cathode is coaxially inserted in the center of a front panel; the gas supply assembly includes an electronegative working substance gas source, a conventional working substance gas source, N electronegative working medium gas supply pipes and N working medium gas supply pipes; the insulating barrier includes a central connecting rod and 2N fins. Self-neutralization can be achieved without the need of neutralizers. In addition, the center-oriented thrust modes can be used for spacecraft orbit control; and the eccentric thrust mode can be used for spacecraft attitude adjustment.

Abstract: An example method of configuring an entitlement service that manages entitlement of software in a virtualized computing system includes: receiving, at a plug-in of the entitlement service, software component data that specifies a component type and offerings of the component type, the offerings associated with feature sets, the entitlement service executing on a cloud platform in the virtualized computing system; storing, by the plug-in, the software component data in a database; and notifying, by the plug-in, the entitlement service to support entitlement of components of the software having the component type.

Abstract: A target paper changing machine includes a paper releasing box, a paper collecting box, paper releasing equipment, paper collecting equipment, a backing plate assembly, target paper, an accurate paper feeding mechanism and a system control unit. The paper releasing box and the paper collecting box are arranged in parallel front and back. The backing plate assembly is arranged between the paper releasing box and the paper collecting box and are fixedly arranged above the two boxes. The paper releasing equipment is arranged in the paper releasing box, and the paper collecting equipment is arranged in the paper collecting box. One end of the target paper is connected with the paper releasing equipment, and the other end bypasses the backing plate assembly and is connected with the paper collecting equipment. The accurate paper feeding mechanism is arranged on the paper releasing equipment and/or the paper collecting equipment.

Abstract: A shooting score identifying method and device, and an electronic device are provided. The method includes the steps of capturing a picture of a shooting operation on target paper to acquire a shooting image formed on the target paper; forming a thermal imaging image of the target paper after the shooting image is acquired; performing target identification on the shooting image to obtain a target image related to a shooting point, and performing direction correction on the shooting point present in the target image to obtain a correction image; and performing interference removal processing on the correction image through the thermal imaging image to obtain an identification image, thereby identifying a shooting score based on the identification image.

Abstract: A memory device includes a memory array structure and a peripheral structure. The memory array structure includes at least one memory bank, and each memory bank includes a plurality of memory blocks. The peripheral structure includes a word line driver circuit and a sense amplifier circuit. A first area including the word line driver circuit and the sense amplifier circuit at least partially overlaps a second area including a memory block in a plan view of the memory device.

Abstract: A memory includes a peripheral circuit and a memory array. The memory array includes word lines. The peripheral circuit includes a driver, a repeater, and a discharge circuit. An output terminal of the driver is coupled with a controlled terminal of the repeater. An output terminal of the repeater is coupled with a controlled terminal of the discharge circuit. The discharge circuit is coupled with a word line in the memory array. The driver is configured to output a first control signal to the repeater. The repeater is configured to output a second control signal to the discharge circuit according to the first control signal.

Abstract: An optical lens group for augmented reality (AR) near-eye display includes a primary lens and an auxiliary lens. An image presented by a microdisplay is enlarged by the optical lens group to form a virtual image which can be observed by an eye of a user. A shape of an outermost surface of the optical lens group can be changed to meet requirements of different diopters. The optical lens group has a primary lens mainly used for image information transmission and image enlargement and an auxiliary lens close to at least one surface of the primary lens. The auxiliary lens is arranged on a lower side or an outer side of the primary lens without propagating any image light signal from a micro image display.

Abstract: A shooting score identifying method and device, and an electronic device are provided. The method includes the steps of capturing a picture of a shooting operation on target paper to acquire a shooting image formed on the target paper; forming a thermal imaging image of the target paper after the shooting image is acquired; performing target identification on the shooting image to obtain a target image related to a shooting point, and performing direction correction on the shooting point present in the target image to obtain a correction image; and performing interference removal processing on the correction image through the thermal imaging image to obtain an identification image, thereby identifying a shooting score based on the identification image.

Abstract: A flash ironmaking drop tube furnace includes a primary reaction section having a refractory, an induction coil around the refractory, insulation located between the refractory and the induction coil, and a susceptor located inside the refractory, the susceptor being formed of a material that is heated by induction when electrical current flows through the induction coil, and having at least one interior channel through which particles can pass. The furnace further includes a muffle, located below the primary reaction section; an outer shell surrounding the muffle; at least one heater located adjacent to the muffle; insulation located between the at least one heater and the outer shell; at least one particle feeder that feeds a predetermined volume of particles into the furnace above the primary reaction section; and an inlet port for injecting gas into the furnace, the inlet port being located so that the gas flows through the susceptor and muffle in parallel with the particles.

Abstract: The disclosure provides example block generation methods. One example method includes that when a first blockchain node is a leader, packing, by the first blockchain node, a leader-elected transaction in a transaction pool into a first block, where the leader-elected transaction records a leader proof of the first blockchain node. The leader proof records a voting state in which each of the plurality of second blockchain nodes votes on the first blockchain node, and the voting state indicates whether a vote is a positive vote or a negative vote. Sends the first block to the plurality of second blockchain nodes, so that the first blockchain node and/or the second blockchain nodes perform fork processing based on the leader proof.

Abstract: A malic acid and KMnO4-based combined and modified cow dung biogas residue hydrochar preparation method, comprising: mixing a cow dung biogas residue with malic acid, and performing ultrasonic treatment to obtain a malic acid modified cow dung biogas residue; performing a hydrothermal reaction with KMnO4 in a high-temperature high-pressure reactor to obtain a combined and modified cow dung biogas residue hydrochar material.

Abstract: A flash ironmaking method is for use with a drop tube furnace that includes a susceptor and a muffle. The method includes feeding particles into the drop tube furnace, introducing hydrogen gas into the drop tube furnace so that it flows parallel to the falling particles, heating a susceptor using induction heating, so that the particles are heated as they fall through the susceptor, heating a muffle, to maintain the temperature of the particles as they fall through the muffle, and cooling the particles and hydrogen gas after they pass through the muffle.

Abstract: An integrated shooting management system includes a data acquisition apparatus, an mobile terminal, an intelligent target, and a server. The integrated shooting management system collects the target paper information in real time and automatically analyzes the shooting accuracy while managing the user data.

Abstract: An automatic target point tracing method, marking a target object in an image acquired by the sighting system to obtain a target point, performing feature extraction and feature description on the image with the target point, and establishing a ridge regression classifier and performing learning training on the classifier according to the extracted features; calculating a regression score of the features of the real-time acquired image in the trained ridge regression classifier, determining that the target point is automatically recognized when the regression score reaches a requirement, and displaying an orientation of the target point in a display unit area; and determining that the target object disappears when the regress core does not reach the requirement, and performing searching near a position where the target object disappears.

Abstract: An integrated shooting management system includes a data acquisition apparatus, an mobile terminal, an intelligent target, and a server. The integrated shooting management system collects the target paper information in real time and automatically analyzes the shooting accuracy while managing the user data.