Abstract: An impedance control strategy for a Data Mask Pin (DM pin) in a preset test mode is provided, so that the impedance of the DM pin in the preset test mode may be defined. In addition, the relation between a control signal configured to control whether to enable the DM pin in a Double Data Rate 5 SDRAM (DDR5) and a control signal configured to control whether the DM pin is a test object in a Package Output Driver Test Mode (PODTM) is specified. The impedance of the DM pin may be tested in the preset test mode.

Abstract: A pre-embedded base device includes a pre-embedded base, a first plug detachably coupled to the pre-embedded base, and second plug detachably coupled to the first plug. The pre-embedded base defines a base water chamber and a water inlet channel in communication with the base water chamber. The first plug has a drainage channel in communication with the base water chamber and a water pipe joint in communication with the drainage channel. When the pre-embedded base device is in an initial configuration, the first plug is coupled to the pre-embedded base, the second plug is coupled to the first plug, the first plug seals the base water chamber, and the second plug seals at least one of the drainage channel or the water pipe joint.

Abstract: A self-adaptive viscous damping wall includes upper and lower fixed ends, an outer box body, an inner steel plate, a viscous fluid, and a self-centering device. The inner steel plate has openings, and the inner steel plate is divided into vertical wide bands, and two side faces of the bands are shear faces of the inner steel plate. An upper end of the inner steel plate is fixed to the upper fixed end. The outer box body has an upper opening for accommodating the inner steel plate and the viscous fluid. A part of an inner surface of the outer box body corresponding to a horizontal movement interval of the shear face of the inner steel plate is a shear face of the outer box body, which is designed with a multi-section curved face, with a flat and straight middle portion and a gradually decreasing end portion.

Abstract: A positioning system and method for a maglev train, the positioning system comprising an onboard magnet mounted at the bottom of a train, two grating arrays laid on train tracks side by side in the traveling direction of the train, an optical pulse generation module and a data processing module. The data processing module performs first-stage train positioning according to drift conditions of the center wavelengths of the marking gratings, performs second-stage train positioning according to drift conditions of the center wavelengths of the first grating array, and performs third-stage train positioning according to drift conditions of the central wavelengths of the second grating array, so as to determine the track positions where the train arrives step by step.

Abstract: A microreader includes: a sample holder (140) configured to support one or more samples to be analyzed; at least two xenon lamps (212) as light sources; at least two optical assemblies (132), each having one or more optical elements (720), the sample holder and each of the optical assemblies (132) being configured to direct the light from the respective xenon lamp (212) to the one or more samples to be analyzed; and detectors, each configured to receive light from the one or more samples supported by the sample holder and generate a signal responsive to the received light from the one or more samples. At least one optical element (720) of at least one of two optical assemblies (132) is configured to be removably retained in the respective optical assembly (132). The removably retained optical element (720) is retained by an assembly of magnets arranged to bias the retained optical element (720) in three-dimensions toward a reference point.

Abstract: Embodiments of this specification provide a large language model-based knowledge mining method and apparatus. In the large language model-based knowledge mining method, structural knowledge for a source entity is obtained based on a predetermined entity graph; a candidate relation set is determined based on a target property of the source entity in the predetermined entity graph; a corresponding target relation set and inheritable knowledge are output by using a large language model and based on the structural knowledge, the candidate relation set, and additional knowledge for the source entity; a candidate entity word set corresponding to the provided relation is output by using the large language model and based on the source entity, the relation in the target relation set, and at least one of the structural knowledge, the additional knowledge, and the inheritable knowledge; and then an entity related to the source entity and a corresponding relation are obtained.

Abstract: A cordless fastening tool includes a housing; a magazine configured to accommodate fasteners; a firing device configured to guide the fasteners along a first direction; a battery pack; and a battery pack mounting portion connected to the housing and configured to detachably support the battery pack. The battery pack is configured to be mounted to the battery pack mounting portion along a second direction perpendicular to the first direction.

Abstract: A write leveling circuit applied to a memory includes: a write signal generation circuit configured to perform delay processing on a first write signal according to a received first clock signal, and output a second write signal; a delay circuit configured to perform delay processing on a received first data strobe signal, and output a second data strobe signal; and a sampling circuit connected to both the delay circuit and the write signal generation circuit, and configured to output a first sampling signal according to the received second data strobe signal and the received second write signal. The sampling circuit is further configured to receive the first data strobe signal, and output a second sampling signal according to the first data strobe signal and the second write signal.

Abstract: A system and method of training a neural network for categorizing transactions may include one or more processors and a computer-readable, non-transitory medium including instructions which, when executed by the one or more processors, cause at least one of the one or more processors to obtain transaction data of a transaction, the transaction data including an amount and a description, apply a machine-learning model on the transaction data to extract a confidence vector, wherein the machine-learning model is trained to categorize transactions, determine whether a confidence score of a transaction category satisfies a predetermined threshold, in response to determining that the confidence score of the transaction category does not satisfy the predetermined threshold, augment the description of the transaction using additional data, and in response to determining that the confidence score of the transaction category satisfies the predetermined threshold, assign the transaction category to the transaction.

Abstract: A faucet connection structure comprising a faucet, a protective sleeve, an inlet diverting base, and a connecting water pipe. The connecting water pipe plays the role of connecting and securing and passes through the protective sleeve. The connecting water pipe has an upper end that connects to a faucet inlet pipe of the faucet, and a lower end that connects and locks with the inlet diverting base. The protective sleeve is coupled between the faucet inlet pipe and the inlet diverting base, eliminating the need to fix ends of the protective sleeve. This configuration simplifies the mounting steps and increases the mounting efficiency. The configuration allows for no collision to occur during the process of cleaning the protective sleeve. The cleaning process is convenient for users. The protective sleeve can be selected from a wide range of shapes, enriching the appearances of the products.

Abstract: A jet polishing device capable of stably forming a Gaussian removal function includes: an auxiliary mounting mechanism; a jet machining mechanism. The jet machining mechanism is connected with the auxiliary mounting mechanism, the jet machining mechanism includes a rotation driving assembly, a positioning assembly and a jet machining assembly, the positioning assembly includes a linear guide rail, a slide mass, a first laser and a second laser, the rotation driving assembly is connected with the linear guide rail, the slide mass is slidably connected to the linear guide rail, the first laser is fixedly arranged relative to the linear guide rail, the jet machining assembly includes a mounting bracket fixedly connected with the slide mass, a nozzle mounting body rotatably connected to the mounting bracket and a nozzle arranged on the nozzle mounting body, and the second laser is connected with the nozzle mounting body.

Abstract: A control method includes: decoding a third Operand (OP) in a third Mode Register (MR) and a fourth OP in a first MR; and in response to the semiconductor memory being in a preset test mode, controlling, in a case where the third OP meets a first decoding condition, the impedance of a Data Mask (DM) pin to be a first value; or controlling, in a case where the third OP meets a second decoding condition, the impedance of the DM pin to be a second value according to the fourth OP; wherein the third OP is configured to indicate whether the DM pin is a test object in the preset test mode, and the fourth OP is configured to indicate whether the DM pin is enabled.

Abstract: Provided are a control circuit, a control method, and a memory. The control circuit includes: a flag signal generation circuit, configured to generate a command/address inversion flag signal based on a command/address control signal and an initial inversion flag signal; an input processing circuit, configured to generate a first intermediate command/address signal based on the command/address control signal and an initial command/address signal; and a logic decoding circuit, configured to: receive the first intermediate command/address signal and the command/address inversion flag signal, and generate a power down mode entry signal or a power down mode exit signal based on the command/address inversion flag signal and the first intermediate command/address signal.

Abstract: Provided are a control circuit, a control method, and a memory. The control circuit includes: an input control circuit, configured to generate a first drive control signal and a second drive control signal based on a command/address control signal and a command/address inversion signal; an input processing circuit, configured to generate a first intermediate command/address signal based on the first drive control signal and the second drive control signal when the command/address control signal is in an enabled state, that the circuit is in a power down mode being indicated when the command/address control signal is in the enabled state; and a logic decoding circuit, configured to generate a power down mode exit signal in the power down mode based on the command/address inversion signal and the first intermediate command/address signal.

Abstract: Embodiments of the present disclosure provide a control method, a semiconductor memory, and an electronic device. When the semiconductor memory is in a preset test mode, a first Model Register (MR) and a second MR related to a Data Pin (DQ) are allowed to directly define the impedance of a Data Mask Pin (DM). The DM does not need to add definition of an output driver state and a related control circuit for the preset test mode to ensure that the preset test mode is adapted to the DM. The impedance of the DM may be tested in the preset test mode to avoid circuit processing errors.

Abstract: An impedance calibration circuit including: a calibration circuit configured to receive a first calibration clock signal, to perform impedance calibration on a basis of the first calibration clock signal, and to output a first stop signal when the calibration is completed; a first detection circuit configured to detect calibration time of the impedance calibration circuit, and to output a second stop signal when the calibration time reaches a preset value; and a calibration control circuit configured to receive the first stop signal and the second stop signal and to output the first calibration clock signal. When the first stop signal or the second stop signal is received, the calibration control circuit stops outputting the first calibration clock signal.

Abstract: An oscillation period detection circuit and method, and semiconductor memory are provided. The oscillation period detection circuit includes an oscillator module, a control module, and a counting module. The oscillator module includes a target oscillator, and is configured to receive an enable signal and control the target oscillator to output an oscillation clock signal according to the enable signal; the control module is configured to receive the enable signal and the oscillation clock signal, and perform valid time reforming processing according to the oscillation clock signal and the enable signal to determine a target time; the counting module is configured to receive the enable signal and the oscillation clock signal, and perform period counting processing according to the enable signal and the oscillation clock signal to determine a target period number. The oscillation period of the target oscillator is calculated according to the target time and the target period number.

Abstract: A positioning system and method for a maglev train, the positioning system comprising an onboard magnet mounted at the bottom of a train, two grating arrays laid on train tracks side by side in the traveling direction of the train, an optical pulse generation module and a data processing module. The data processing module performs first-stage train positioning according to drift conditions of the center wavelengths of the marking gratings, performs second-stage train positioning according to drift conditions of the center wavelengths of the first grating array, and performs third-stage train positioning according to drift conditions of the central wavelengths of the second grating array, so as to determine the track positions where the train arrives step by step.