Abstract: A negative electrode current collector and a preparation method thereof, a battery cell, a battery, and an electric apparatus are provided. The preparation method for a negative electrode current collector includes the following steps: providing a metal substrate, where the metal substrate is a two-dimensional metal structure or a three-dimensional porous metal structure; and irradiating at least part of the surface of the metal substrate with a laser, causing metal grains in a laser ablation heat-affected zone of the metal substrate to melt and recrystallize to form smaller-sized metal grains, thereby obtaining the negative electrode current collector.

Abstract: A negative electrode current collector, a battery cell, a battery, and an electric apparatus are disclosed. The negative electrode current collector includes a negative electrode substrate and a modification layer located on at least one side of the negative electrode substrate, where the modification layer includes an active reaction layer, and a laminar material layer disposed between the active reaction layer and the negative electrode substrate.

Abstract: A negative electrode current collector, a battery cell, a battery, and an electric apparatus are provided. The negative electrode current collector includes a foam metal substrate, where the foam metal substrate has a mass-specific electrochemically active surface area of 2.5 cm2/g to 20 cm2/g and an electrochemically active volumetric surface area of 22 cm2/cm3 to 180 cm2/cm3.

Abstract: A boron-doped diamond electrode with an ultra-high specific surface area, and a preparation method therefor and the application thereof are provided. The boron-doped diamond electrode includes a substrate and an electrode working layer arranged on a surface thereof, the substrate is polysilicon or monocrystal silicon with a high specific surface area, and the electrode working layer is a boron-doped diamond layer. The polysilicon with a high specific surface area is obtained by anisotropic etching and/or isotropic etching, and the monocrystal silicon with a high specific surface area is obtained by anisotropic etching. The boron-doped diamond layer includes a highly conductive layer, a corrosion-resistant layer, and a strongly electrocatalytically active layer, which have different boron contents.

Abstract: The disclosure provides a method and an apparatus for generating comment information based on a large model, an electronic device and a storage medium, relates to a technical field of artificial intelligence, and in particular to the technical fields of deep learning, large model, and natural language processing, and the like. The specific technical solution includes: obtaining description information of a resource to be commented on by understanding, based on the large model, the resource to be commented on; obtaining, based on the description information, comment information of the resource to be commented on, in which the comment information includes at least a comment video of the resource to be commented on; and displaying the comment video in a comment section.

Abstract: Techniques pertaining to ranging narrowband (NB) channel synchronization in wireless communications are described. An apparatus (e.g., an initiator) initiates a ranging session by: (1) transmitting a start-of-ranging (SOR) message and a Poll message; and (2) receiving a Response message from each of one or more responders. The SOR message provides either: (a) explicit NB ranging channel information; or (b) a range block index (RangingBlockIndex) to which a time offset field in the SOR message points.

Abstract: A mesoporous nickel powder and a preparation method therefor, and a nickel-phosphorus catalyst system. The mesoporous nickel powder comprises powder-like particles of metallic nickel, the average particle size of the particles being 1-100 ?m, the average pore diameter being 10-60 nm, the pore volume being 0.02-0.09 cm3/g, and the BET specific surface area being 5.0-40.0 m2/g. The preparation method for the mesoporous nickel powder comprises: a hydrothermal synthesis step; a templating agent removal step; and a reduction step; the templating agent is a triblock copolymer comprising an A-B-A structure, or a disulfide bond diblock copolymer comprising an A-S-S-B structure. The nickel-phosphorus catalyst system comprises a complex formed by the mesoporous nickel powder and a phosphorus ligand.

Abstract: Methods for diffusion-based video generation include capturing multi-actor performances in a scene rig and capturing single-actor facial detail in a face rig. Dynamic performances are reconstructed from the scene rig using four-dimensional Gaussian splatting. For each actor for which single-actor facial detail is captured, a low-quality model and a high-quality model are constructed based on the facial detail and paired image sequences are produced. A diffusion-based detail-enhancement model is trained using the paired image sequences, and high-quality images are rendered for facial closeups by applying the trained diffusion-based detail enhancement model to the reconstructed dynamic performances from the scene rig. Various other methods and systems are also disclosed.

Abstract: A system for managing data availability for database transactions is disclosed. The system is programmed to receive source data and extract a plurality of events from the source data. The system is programmed to create a halt record corresponding to each event of the plurality of events. The system is programmed to resolve conflicts among one or more halt records. The system is programmed to receive a request for a specific database transaction related to a specific database item from a client device. The system is programmed to determine whether any halt record is in effect for the specific database item. The system is programmed to perform the specific database transaction in response to determining no halt record is in effect. The system is programmed to transmit a result of the specific database transaction in response to the request to the client device.

Abstract: The present invention discloses a method, system, and device for mouse event interaction based on a general gyroscope, belonging to the technical field of mouse event interaction. The method includes the following steps: monitoring the output data of the gyroscope in a stationary state, and processing the output data of the gyroscope in a stationary state to obtain an evaluation value of the static offset degree of the gyroscope; collecting the output data of the gyroscope, and performing initial data calibration on the output data of the gyroscope according to the evaluation value of the static offset degree of the gyroscope; monitoring the working environment data and the working state data of the gyroscope, comprehensively analyzing the working environment data, the working state data, and the evaluation value of the static offset degree of the gyroscope to obtain an evaluation value of the dynamic offset degree of the gyroscope.

Abstract: Disclosed is a robotic wiper, including: a body; a first cleaning assembly; a detection device, including a detection member, the detection member having a first working state and a second working state; and a second cleaning assembly, capable of moving relative to the body in the direction perpendicular to the to-be-wiped surface, where when the detection member is in the first working state, the second cleaning assembly is in one of the following three working states: a first state maintained at the first position, a second state maintained at the second position, and a third state transitioning between the first position and the second position; when the detection member is in the second working state, the second cleaning assembly is in one of the following two working states: the first state maintained at the first position, and the second state maintained at the second position.

Abstract: The disclosed computer-implemented method may include receiving, by a computing device, an original video to relight. Additionally, the method may include predicting, by the computing device using a de-lighting model trained on a hybrid dataset of lighting-rich data and motion-rich data, an albedo video corresponding to the original video. The method may also include generating, by the computing device using a relighting model trained on the hybrid dataset, a relit video based on the albedo video under a specified lighting condition based on an input high dynamic range (HDR) map. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: Methods for motion-controllable video diffusion include extracting optical flow fields from an input video and computing warped noise by iteratively warping noise between consecutive frames using the optical flow fields. The iteratively warping includes (i) re-Gaussianizing expanded pixel regions by sampling fresh Gaussian noise, and (ii) aggregating contracted pixel regions by merging noise particles and renormalizing variance to preserve spatial Gaussianity. An output video is generated by initializing a diffusion process with the warped noise and iteratively denoising to produce temporally coherent output frames. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: A color film substrate includes a first base substrate, a color film layer disposed at one side of the first base substrate, a protective layer disposed at one side of the color film layer away from the first base substrate, and a plurality of first spacers disposed corresponding to the plurality of first grooves. In the non-display region, a plurality of first grooves are provided at one surface of the protective layer away from the first base substrate. A part of the first spacer is disposed in the first groove.

Abstract: The present disclosure provides a cleaning robot, a cleaning module, a cleaning assembly, a base and a cleaning system, wherein the cleaning robot includes: a robot apparatus, configured to carry the cleaning module; and a first replacement mechanism, configured to enable the robot apparatus to be loaded with the cleaning module, and replace a cleaning module carried on the robot apparatus with the loaded cleaning module. When the cleaning robot is loaded with a new cleaning module, the loaded new cleaning module replaces the old cleaning module originally carried on the cleaning robot, in this way, the assembling and disassembling of the cleaning modules on the cleaning robot can be performed synchronously.

Abstract: A neural network-based error compensation method for mass transfer of mini-light-emitting diode (Mini-LED) chips includes the following steps. (S1) An automated optical re-inspection result is obtained as a first result. (S2) The first result is sorted and normalized to obtain a second result. (S3) Nearest-neighbor interpolation is performed on a Mini-LED chip with a transfer status identifier being abnormal, and a differential of path variables of each Mini-LED chip is calculated. (S4) A multi-layer neural network model is defined. A loss function is constructed. A weight of the multi-layer neural network model is updated with the loss function, until no overfitting is observed. (S5) A chip transfer path is generated and input into the multi-layer neural network model to obtain a predicted transfer error value, and mass transfer of the Mini-LED chip is performed based on the predicted transfer error value.

Abstract: The technology of this application relates to a neural network model training method, an image processing method, and an apparatus in the artificial intelligence. The training method includes each of at least one first accelerator training a neural network model based on at least one training sample. Before forward computation at an ith layer is performed, different parameters of the ith layer are obtained locally and from another accelerator, to obtain a complete model parameter of the ith layer. According to the method in this application, storage pressure of the first accelerator can be reduced.