Abstract: An optimal tracking control method for protecting transient performance of a maglev train is provided, relating to the technical field of maglev trains. The method includes: determining a dynamic magnetic suspension model based on a structure of a suspension frame; determining a maglev train model based on the dynamic magnetic suspension model; constructing a corresponding virtual controller based on the maglev train model; constructing a real controller based on the virtual controller; and controlling, by the real controller, a suspension air gap of a maglev vehicle. This application addresses the issues of inconsistent suspension gap output, high costs, and low resource utilization in existing maglev control technology.

Abstract: A repeat transmission processing method includes obtaining, by a terminal, first information; determining, by the terminal, at least one transmission gap in a first repeat transmission process according to the first information; and performing, by the terminal, a first operation in a transmission gap.

Abstract: A water stripping method, a water stripping device, and a water stripping system of a leather fiber are provided, relating to the technical field of leather recycling. Since a leather fiber in a waste leather is easier to be physically opened and impact-stripped than a coating layer, the waste leather with the coating layer can be initially treated by stripping, such that the leather fiber is effectively stripped from the coating layer. This process avoids the problem that the leather fiber and the coating layer cannot be separated due to adhesion, and even if the leather fiber and the coating layer are separated, broken leather fibers may still be doped with some coating layer fragments. Moreover, the process effectively improves an initial treatment effect of the waste leather and a leather fiber recovery rate, thereby improving a recycling rate of the waste leather with the coating layer.

Abstract: A device may receive sensitive attribute data, model prediction data, and true target data associated with a regression machine learning model, and may determine quantities of Gaussian components for Gaussian mixtures. The device may generate Gaussian mixtures of the quantities of Gaussian components based on the sensitive attribute data, the model prediction data, and the true target data, and may determine parameters of estimates of conditional densities by the Gaussian mixtures based on the sensitive attribute data, the model prediction data, and the true target data. The device may calculate an independence measure, a separation measure, and a sufficiency measure of the regression machine learning model based on the Gaussian mixtures and the parameters of the estimates of the conditional densities. The device may perform actions based on one or more of the independence measure, the separation measure, or the sufficiency measure.

Abstract: A method and a chip for picture processing, and a storage medium are provided. The method includes: data of a search window is loaded from a memory cell array, and the data of the search window data is cached to a register array; grouping search is performed on the register array based on motion trajectories of multiple samples of a current picture, and sample data of reference points corresponding to the multiple sample points is outputted in parallel; and sample data of the multiple sample points is determined based on the sample data of the reference points.

Abstract: A method for selecting a collector for synchronous lead-silver enrichment based on coordination chemistry and electrochemistry includes: acquiring electrochemical information on a solid-solid interaction between a silver mineral and galena; acquiring the galena, the silver mineral, and potential targeted mineral-philic groups of the galena and the silver mineral, and outputting chk files; analyzing the quantum chemical calculation chk files to obtain shape and energy level information of frontier molecular orbitals of related minerals and the mineral-philic groups; preliminarily identifying a targeted mineral-philic group for the silver mineral; thermodynamically, determining whether the targeted mineral-philic group preliminarily identified for the silver mineral demonstrates a better adsorption capacity than other mineral-philic groups for the silver mineral; and calculating solvation free energies of targeted mineral-philic group derivatives with different carbon chain lengths and shapes, and determining a

Abstract: The present application discloses a circuit breaker comprising: a housing defining an operating chamber and an arc extinguishing chamber; a severing mechanism provided in the operating chamber and comprising a punch, the severing mechanism being configured to sever via the punch a conductor extending through the housing between the operating chamber and the arc extinguishing chamber; an arc extinguishing medium in the form of a wire mesh and filled within the arc extinguishing chamber; and a gas flow guiding mechanism disposed around the arc extinguishing medium and configured to guide the gas from the punch of the severing mechanism through the arc extinguishing medium when the conductor extending through the housing is severed by the severing mechanism.

Abstract: Provided is a flotation recovery method for a full particle size copper ore, including: performing grinding and dissociation treatment on a copper raw ore, and then performing primary roughing; performing classification on the copper rough tailings to obtain a +200 mesh slurry product, a 200-400 mesh slurry product, and a ?400 mesh slurry product, which are three particle size slurry products; performing coarse particle flotation on the +200 mesh slurry product, and recovering coarse particle copper ore using a combined collector of diisopropyl xanthogen disulfide and isopropyl xanthate, wherein a rough concentrate obtained is returned to a grinding operation; performing fine particle flotation on the ?400 mesh slurry product using a fine particle flotation collector, and combining an obtained rough concentrate with a copper rough concentrate from the primary roughing to perform cleaning; and directly using the 200-400 mesh slurry product as tailings.

Abstract: The provided is a real-time state perception and early warning system and method based on field-electrical integration for a gas insulated switchgear (GIS). The system includes an embedded device for synchronous signal acquisition and measurement and an industrial personal computer (IPC), where a simulator, a location searcher, and an early warning device are deployed in the IPC. The embedded device obtains a full time-domain waveform diagram including a time-domain waveform diagram and a frequency-domain waveform diagram of a partial discharge signal when detecting, based on pre-screened strongly correlated features, that an electromagnetic field signal inside the GIS contains the partial discharge signal.

Abstract: A method includes extracting, from each radar frame in a data stream, a set of features that a machine-learning (ML) model is configured to receive as input. The method includes detecting human presence for a current frame. The method includes in response detecting the human is present: inputting the set of features into the ML model that is configured to estimate a pose of the human based on learned spatial relationships among a set of different human body parts and a learned temporal variations of the different human body parts across multiple time instances. The method includes accumulating a queue of Nv consecutive frames; and selecting a set of activity frames corresponding to a single action, based on motion features extracted from the queue. The method includes inferring and labeling a user action based on a sequence of respective poses of the human corresponding to the set of activity frames.

Abstract: Systems and methods for changing transmission settings of a wireless communication device of a head-wearable device are disclosed. The method includes, obtaining first data from an inertial measurement unit, determining, based on the first data, that a head-wearable device is in motion, obtaining additional data from a second sensor, distinct from the inertial measurement unit, determining that the additional data indicates that the head-wearable device is donned by a user, causing a wireless communication device of the head-wearable device to operate using a set of one or more transmission settings. The method further includes, obtaining second data from the inertial measurement unit, determining, based on the second data, that the head-wearable device is not in motion, causing the wireless communication device to operate using a different set of one or more transmission settings, distinct from the set of one or more transmission settings.

Abstract: A computer implemented method for end-to-end hierarchical time series forecasting including receiving an input hierarchical time series data set, passing the input hierarchical time series data set through a base neural forecaster trained to generate a plurality of corresponding base forecasts, and passing the plurality of corresponding base forecasts through a neural network projection layer to generate a plurality of reconciled time series forecasts for the input hierarchical time series data set. The neural network projection layer is trained to reconcile the corresponding base forecasts via learning an improved oblique projection directly from the corresponding base forecasts, and the base neural forecaster and the neural network projection layer are part of a trained end-to-end forecasting model.

Abstract: Provided is a display control method. The method includes: determining a first display region of a display panel and a second display region outside the first display region; acquiring a row direction signal and a column direction signal; and by inputting the row direction signal into the row direction signal line and controlling, based on the column direction signal, the first switch, making the display panel drive the first display region at a first frequency and drive the second display region at a second frequency, wherein the first frequency is different from the second frequency.

Abstract: An apparatus includes a microphone, a memory, and a processor operably coupled to the memory. The processor is configured to determine an energy level of an audio signal captured by the microphone and determine whether the audio signal indicates a possible fall. The processor is further configured to, upon a determination that the audio signal indicates the possible fall, poll a fall detection module.

Abstract: Techniques are provided for implementing a defragmentation process during a merge operation performed by a re-compaction process upon a log structured merge tree. The log structured merge tree is used to store keys of key-value pairs within a key-value store. As the log structured merge tree fills with keys over time, the re-compaction process is performed to merge keys down to lower levels of the log structured merge tree to re-compact the keys. Re-compaction can result in fragmentation because there is a lack of spatial locality of where the re-compaction operations re-writes the keys within storage. Fragmentation increases read and write amplification when accessing the keys stored in different locations within the storage. Accordingly, the defragmentation process is performed during a last merge operation of the re-compaction process in order to store keys together within the storage, thus reducing read and write amplification when accessing the keys.

Abstract: Techniques are provided for implementing garbage collection and bin synchronization for a distributed storage architecture of worker nodes managing distributed storage composed of bins of blocks. As the distributed storage architecture scales out to accommodate more storage and worker nodes, garbage collection used to free unused blocks becomes unmanageable and slow. Accordingly garbage collection is improved by utilizing heuristics to dynamically speed up or down garbage collection and set sizes for subsets of a bin to process instead of the entire bin. This ensures that garbage collection does not use stale information about what blocks are in-use, and ensures garbage collection does not unduly impact client I/O processing or conversely falls behind on garbage collection. Garbage collection can be incorporated into a bin sync process to improve the efficiency of the bin sync process so that unused blocks are not needlessly copied by the bin sync process.

Abstract: The present disclosure relates to an antibody, such as a monoclonal antibody (mAb), or an antigen-binding fragment thereof, that specifically recognizes TIGIT, and methods of making the same and using the same.

Abstract: A system for virtual mapping for distributed heterogeneous devices with speaker and microphone is provided. The system includes a transceiver and a processor operably connected to the transceiver. The processor is configured to control a set of target devices to emit or measure acoustic signals. Each target device has a capability of emitting and receiving acoustic signals. The processor is configured to process the acoustic signals to at least reduce random jitters, clock offsets, or both the random jitters and the clock offsets. The processor is configured to determine pairwise distances for the set of target devices based on the processed acoustic signals. The processor is configured to map the pairwise distances for each target device among the set of target devices into distances between a set of points in a multidimensional space.