Abstract: This application provides a covert transmission method against active and passive cooperative attacks in a cognitive radio network. This method uses a joint design of noise uncertainty and power uncertainty to combat powerful collusion eavesdroppers. Then, the error detection probability of collusion eavesdroppers in the network and the covert transmission performance of legitimate users are analyzed. Finally, the numerical results show that the proposed scheme can guarantee the covert performance of the system, and can also resist the active and passive cooperative attacks of the collusive eavesdropper.

Abstract: The present application discloses a virtual gift generating method and apparatus, a device, and a medium. The method includes: in response to a triggering operation by a user in a live streaming room; obtaining information to be processed, wherein the information to be processed is information used for generating a virtual gift; after the information to be processed is obtained, determining a virtual gift template corresponding to the information to be processed, wherein different virtual gift templates correspond to different animation effects; and generating a virtual gift based on the virtual gift template and the information to be processed, wherein the virtual gift presents an animation effect corresponding to the virtual gift template.

Abstract: A step, a step device and a vehicle are provided. The step includes a plurality of step segments, at least one connection step segment and a fastener, adjacent step segments include a first step segment and a second step segment, a first end of the connection step segment is slidably and detachably connected to the first step segment, a second end of the connection step segment is slidably and detachably connected to the second step segment, and the fastener is configured to fasten the connection step segment and the first step segment and to fasten the connection step segment and the second step segment.

Abstract: Disclosed are a side bar, a step assembly comprising a side bar, and a vehicle having a step assembly, in accordance with the present technology. In some embodiments, a side bar includes a plurality of side bar body segments, each of the plurality of side bar body segments has a first end and a second end in a longitudinal direction of the side bar body segment, two adjacent side bar body segments of the plurality of side bar body segments are a first side bar body segment and a second side bar body segment, and a first end of the first side bar body segment and a second end of the second side bar body segment are opposite to each other and detachably connected.

Abstract: Solutions for authenticating digital audio include: generating a first band-limited watermark using a first key, generating a second band-limited watermark using a second key, wherein the bandwidth of the second watermark does not overlap with the bandwidth of the first watermark; and embedding the first watermark and the second watermark into a segment of the digital audio file. Solutions also include determining a first watermark score of a segment of the digital audio file for the first watermark using the first key; determining a second watermark score of the segment of the digital audio file for the second watermark using the second key; based on at least the first watermark score and the second watermark score, determining a probability that the digital audio file is watermarked; and generating a report indicating whether the digital audio file is watermarked. In some examples, solutions may also embed and decode messages.

Abstract: Systems and methods for synthetic speech detection includes receiving an input sample comprising audio and extracting acoustic features corresponding to speech in the audio. The extracted acoustic features are processed using a plurality of neural networks to output abstracted features and generating a feature vector corresponding to the abstracted features using pooling. Training of an SSD task, a speaker classification task, and a channel classification task are performed at a same time, using the feature vector. Synthetic speech is detected using at least the trained SSD task.

Abstract: A method for planning physical observation tasks in a space-air-ground integrated sensor network includes: obtaining capability data of available space-air-ground sensors, discretizing a spatiotemporal range of a monitoring scenario, and establishing spatial, temporal, and spatiotemporal mapping relationships between discretized spatiotemporal locations and sensor capabilities; performing quantum encoding on the spatiotemporal locations, sensors, and observation capabilities, and executing a quantum entanglement operation based on the constructed three types of mapping relationships, to build a unified quantum state representation of the spatiotemporal observation capabilities of the space-air-ground sensors; for a specific computation requirement, constructing a corresponding quantum operator and applying a quantum algorithm to perform efficient computation and measurement on the unified quantum state representation to obtain a computation result, thereby enabling scheduling of the space-air-ground integrate

Abstract: Provided is a sidewall doping method for a 3D (three dimensional) memory device, which belongs to the technical field of memory device manufacturing. The sidewall doping method for the 3D memory device mainly includes: conducting deposition treatment on a sidewall of the 3D memory device; conducting annealing treatment by either a long-wavelength radiation annealing process or a rapid thermal annealing process; and removing a capping layer portion by using an anisotropic SiO2 selective and specific vertical etching process; where the above deposition, annealing and etching steps are repeated for a predetermined number of cycles to complete sidewall doping.

Abstract: Disclosed are a step mounting assembly and a retractable step device in accordance with the present technology. The step mounting assembly comprises a first support arm, a second support arm, and a step bracket, wherein the step bracket has a first side and a second side oriented away from each other in a transverse direction of the step bracket, at least one of the first side and the second side can be connected to a step, the first support arm is pivotally connected to the step bracket, and the second support arm is pivotally connected to the step bracket to move the step connected to the step bracket between an extended position and a retracted position.

Abstract: Provided are a high-voltage blocking device (HVBD), a three-dimensional memory, and a preparation method thereof, relating to the technical field of three-dimensional memory manufacturing. The HVBD layer is provided with a plurality of vertical MOS through-holes; HVBDs are embedded in the HVBD layer through the corresponding vertical MOS through-holes; the HVBD layer includes a decoder array connection layer, a gate control layer, and a bit line connection layer that are sequentially arranged from bottom to top; the decoder array connection layer, the gate control layer, and the bit line connection layer are each provided with a plurality of MOS through-holes. This application, by embedding the HVBDs between a bit line decoder array and a three-dimensional stacked memory array, can reduce a planar area occupied by the three-dimensional memory while preventing electrical breakdown of a gate insulating layer of a bit line selection transistor.

Abstract: Disclosed is a programmable heterojunction memory device with current blocking, relating to the field of memory devices. The memory device includes: a first electrode, a current-blocking heterojunction insulating medium layer, and a second electrode that are sequentially connected; the current-blocking heterojunction insulating medium layer includes a current-blocking layer and a programmable medium layer; the current-blocking layer and the programmable medium layer use different insulating media; the first electrode and the second electrode are made of designated matching materials; a bandgap width of the current-blocking layer is smaller than a bandgap width of the programmable medium layer. The memory device can achieve low-cost, high-density storage.

Abstract: The present disclosure relates to a 3D sparse reconstruction method and device for a monocular image of a non-metallic pipeline for deep-sea mining. The 3D sparse reconstruction method includes the following steps: acquiring internal pictures of a to-be-detected non-metallic pipeline by using a robot carrying a monocular camera to form a dataset; performing feature point detection and matching on the dataset by using a deep-learning-based feature point matching network model; aggregating and redistributing obtained feature points; and based on the aggregated feature points, performing 3D sparse reconstruction by using an improved incremental reconstruction algorithm to obtain internal structural information of the to-be-detected non-metallic pipeline. The present disclosure can be widely applied in the technical field of non-metallic pipeline detection.

Abstract: A protective shell for a vehicle winch includes a first shell and a second shell. The first shell has a first end and a second end that are oppositely arranged in a first direction. The first end of the first shell is detachably connected to a rope guide of the vehicle winch. The first shell includes a through hole penetrating the first shell along the first direction and configured to accommodate at least a part of a buffer member of the vehicle winch. The second shell is detachably connected to the second end of the first shell to open and close the through hole.

Abstract: The present disclosure discloses a vulnerability detection method of power industry control protocols based on federated multi-agent reinforcement learning, which belongs to a technical field of the intersection of power Internet of Things security detection and artificial intelligence. The detection method includes: s1: collecting data and structured processing; s2: initializing multi-agent array and dual network; s3: integrating federated reinforcement learning to process data; s4: detecting protocol vulnerabilities through collaborative architecture and intelligent decision-making; s5: carrying out decentralized execution, implementing joint fuzzy testing and result feedback.

Abstract: A process for preparing chemicals by graded gas-phase dehydrogenation and cracking of waste plastics and crude oil mixed feeding comprises: waste plastic self-heating melting dechlorination pretreatment, waste plastic molten liquid and crude oil selective vaporization dehydrogenation cracking, high-temperature cracked oil-gas gas-phase catalytic cracking, and cracked oil-gas fractionation and refining. Recycle oil and cracked dry gas from fractionation are recycled to pretreatment for melting and feedstock addition. Waste plastic molten liquid from pretreatment is mixed with crude oil as raw material for selective vaporization dehydrogenation cracking. Selective vaporization dehydrogenation cracking and gas-phase catalytic cracking are completed sequentially via atomizing nozzle feeding. The fractionation subsystem produces ethylene, propylene, butylene, benzene, toluene, xylenes, high-temperature recycle oil, and cracked dry gas.

Abstract: The present disclosure relates to the technical field of electric power engineering, in particular to a two-stream Long Short-Term Memory (LSTM) method for predicting power load of port shore power. Loads. The method entails collecting longitudinal data to identify factors that affect power load data, performing correlation analysis to classify dominant and auxiliary features power loads; separately modeling the dominant and auxiliary features and generating a fusion feature map; constructing a Bayesian Optimization-Long Short-Term Memory (BO-LSTM) neural network, and inputting a fusion feature map into a two-stream time series learning module, extracting a deep representation of the dominant and auxiliary features, then introducing a channel attention mechanism is to weight a fusion feature vector, and outputting a power load prediction value by a residual correction module.

Abstract: A wiring board include a base substrate, an active pattern layer, and an electrical pattern layer. The active pattern layer is arranged on a side of the base substrate and includes a plurality of active patterns. The electrical pattern layer is arranged on a side of the active pattern layer away from the base substrate, and includes a plurality of connection portions, and at least one connection portion is coupled to an active pattern. A connection portion includes a plurality of first sub-layers which are stacked arranged in a thickness direction of the base substrate, two first sub-layers are farthest away from the base substrate among the plurality of first sub-layers are a first conductive sub-layer and a first protective sub-layer. The first protective sub-layer is arranged on a side of the first conductive sub-layer away from the base substrate, and the material of the first protective sub-layer includes nickel.

Abstract: A spatial illumination or lighting system based on a light color target has a control device and an actuating device, wherein the control device is configured to interact with a user and communicates with the actuating device, the control device receives identity identification information about the illuminated object input by the user, detects real-time light color data of the object and feeds the detection result back to the user, and sends the identity identification information about the object, the detection result and the light color target to the actuating device. The actuating device is arranged in the space or place, configured to communicate with the control device and implement lighting for the illuminated object: it receives the identification information, the detection result and the light color target of the object, calculates a comprehensive adjustment parameter corresponding to the object, and illuminates the object to achieve the desired light color target.

Abstract: An array substrate having a light-emitting unit region, a bonding region, and a bending region located between the light-emitting unit region and the bonding region. The light-emitting unit region is configured to be provided with light-emitting units. The bonding region is configured to bond a control circuit. The array substrate includes a base substrate located in the light-emitting unit region and the bonding region, a first organic material layer, a metal intermediate layer, and a second organic material layer. The first organic material layer is disposed on a side of the base substrate. The metal intermediate layer is disposed on a side of the first organic material layer away from the base substrate. The second organic material layer is disposed on a side of the metal intermediate layer away from the base substrate.

Abstract: A medical interventional tool has distal and proximal ends. A responsive material is located at the distal end or elsewhere along the interventional tool and is capable of providing a temperature-dependent or pressure-dependent optical response. At least one optical guide is in optical communication with the responsive material to collect an optical signal from the responsive material located at the distal end or other location along the interventional tool. The at least one optical guide further guides the collected optical signal to an optical output at the proximal end of the interventional tool. An optical response analyzer is configured to receive the collected optical signal from the optical output and to process the collected optical signal to derive therefrom a temperature or pressure reading or indication representative of a temperature or pressure at the distal end or other location along the interventional tool.