Abstract: The present invention relates to an open binocular near-eye display device with an adjustable pupillary distance, including a binocular display host allowing both eyes to simultaneously view enlarged pictures. The binocular display host includes a middle frame component, a fixed bracket, a left optical machine fixing frame, and a right optical machine fixing frame. The middle frame component is provided with a fixing portion connected to the fixed bracket, and position-limiting portions are arranged on both sides of the fixing portion. The fixing portion is provided with an adjustment gap. The middle frame component is provided with a sliding component, and the fixed bracket is provided with an adjustment knob. The left optical machine fixing frame and the right optical machine fixing frame are each provided with a rack, and the two racks are both engaged with a driving gear and are located on both sides of the driving gear.

Abstract: A reversing control method and system and a vehicle, which relate to the technical field of vehicles. In the method, after receiving a reversing instruction for a vehicle, a first reversing trajectory of the vehicle can be acquired; the vehicle can be controlled to reverse according to the first reversing trajectory, such that a driver does not need to control the vehicle, thus avoiding tedious operation by the driver; during a reversing process the first reversing trajectory can be adjusted according to first environmental obstacle information of the vehicle, to acquire a second reversing trajectory; and the vehicle is then controlled to reverse according to the second reversing trajectory. Thus, the danger caused by environmental obstacles during a reversing process may be avoided, and potential safety hazards in process of reversing a vehicle are eliminated.

Abstract: The present disclosure provides a vector generation method, a data processing method, a vector generation apparatus, a data processing apparatus, and a non-transitory computer-readable storage medium. The vector generation method includes: performing learnable processing on N current position vectors in a mapping table to obtain N learnable position vectors, where N is a positive integer; and updating the N current position vectors with the N learnable position vectors.

Abstract: A method and an apparatus for processing an intelligent voice query. A voice query input is received from a user. Automatic speech recognition and natural language understanding generate structured query data. It is modified based on an input adaptation rule to obtain modified structured query data appropriate for a content providing server, which provides a query result output corresponding to the modified structured query data. Input adaptation rules may comprise rule sets based on behavior patterns of the user and/or business recommendations. The query result output can be used for natural language generation, which may have similar adaptation rules for output.

Abstract: Systems for catalyzing and degreasing a tail gas are disclosed. In some embodiments, the system includes: an acid-inlet volatilization device, a catalytic degreasing device is connected with the acid-inlet volatilization device, a three-way catalytic converter is connected with the catalytic degreasing device, and a tail-gas heater provided at the three-way catalytic converter. The three-way catalytic converter is heated by the tail-gas heater to decompose and/or react hazardous substances. In other embodiments, the acid-inlet volatilization device includes an acid storage tank and a pump, the pump is connected with the acid storage tank, and the pump is connected with the catalytic degreasing device. The acid-inlet volatilization device includes an evaporator connected between the pump and the catalytic degreasing device. The evaporator is connected with a nitrogen gas inlet.

Abstract: Three-way catalytic converters and devices for processing tail gases are disclosed. In some embodiments, a three-way catalytic converter includes a cylindrical housing, a three-way catalytic assembly provided in the cylindrical housing, a tail gas inlet and a tail gas outlet provided at the top of the cylindrical housing and communicated with the cylindrical housing, and a heater circumferentially wrapped around the outer side wall of the cylindrical housing. The three-way catalytic assembly is heated by energizing the heater. In other embodiments, a first cavity is formed between the three-way catalytic assembly and one end of the cylindrical housing, a second cavity is formed between the three-way catalytic assembly and another end of the cylindrical housing, the tail gas inlet is connected with the first cavity, and the tail gas outlet is connected with the second cavity.

Abstract: Here provide a model performance evaluating method, an apparatus, a device, and a storage medium. The method includes: determining, at a client node, a plurality of predicted classification results corresponding to a plurality of data samples by comparing a plurality of predicted scores to a score threshold, the plurality of predicted scores being output by a machine learning model for the plurality of data samples, the plurality of predicted classification results indicating that the plurality of data samples are predicted to belong to a first category or a second category, respectively. The method further includes: determining values of a plurality of metric parameters associated with a predetermined performance indicator of the machine learning model based on differences between the plurality of predicted classification results and a plurality of ground-truth classification results corresponding to the plurality of data samples.

Abstract: A magnet-driven bistable dynamic bioreactor, its manufacturing method, and application thereof are provided. The bioreactor has a magnet-driven bistable actuator, a magnetic field generation module, and a connected temperature control module. The magnet-driven bistable actuator includes a magnetic bistable arch membrane. The magnetic field generation module provides a direction-alternating magnetic field, which drives the magnetic bistable arch membrane to switch states between different configurations. This process applies adjustable frequency biaxial bi-directional loading on cells that cultured on membrane, simulating real tissue loading. The temperature control module regulates the temperature of the magnet-driven bistable actuator. The bioreactor enables adjustable frequency biaxial bi-directional loading on cells cultured on the magnetic bistable arch membrane by utilizing an alternating magnetic field to switch its configuration.

Abstract: The present disclosure relates to a core module and an earphone. The core module comprises a core shell, a speaker, and a main control circuit board. The speaker and the main control circuit board are arranged in the core shell. The speaker includes a first coil coupled to the main control circuit board, a second coil is arranged on the main control circuit board, and a winding axis direction of the second coil crosses a winding axis direction of the first coil.

Abstract: A signal transmission terminal, a sampling device, a battery module and a device are disclosed. The signal transmission terminal is used for the sampling device. The sampling device includes a conductive sheet. The signal transmission terminal includes a first connecting portion, a second connecting portion and a bendable portion. The first connecting portion is used for being connected to the conductive sheet and is provided with a raised portion. The second connecting portion is connected to the first connecting portion and is used for being connected to a sampling object. The bendable portion is used for being connected to the first connecting portion. The bendable portion is configured to press the conductive sheet between the first connecting portion and the bendable portion after being bent. The above signal transmission terminal can improve connection stability with the conductive sheet, such that reliability of sampling precision can be guaranteed.

Abstract: The present disclosure relates to a main control circuit board and an earphone. The main control circuit board comprises a substrate, metal wires, and a load. The metal wires include a power source wire and a loop wire that are configured to connect the load to an external power source, the power source wire and the loop wire are arranged side by side, and a current direction of the power source wire is opposite to a current direction of the loop wire. A ratio of an absolute value of a difference between a width of the power source wire or the loop wire and an average width to the average width is less than or equal to 20%, the average width being defined as an average value of widths of the power source wire and the loop wire.

Abstract: Disclosed in the present application is a method for fitting spontaneous emission noise of a lidar system or an optical fiber sensing system. The method includes: providing a trigger collection signal by a signal source; triggering, based on the trigger collection signal, a co-located transceiver module and a distributed transceiver module to perform synchronous detection on a detection target; receiving co-located data and distributed data returned by the detection target; subtracting local noise from the co-located data and the distributed data, respectively; selecting a linear interval to normalize the co-located data; performing subtraction operation on the normalized co-located data and the distributed data to obtain spontaneous emission noise; and fitting the spontaneous emission noise by a function.

Abstract: A method and apparatus for protecting data, and a device and a medium are provided. The method comprises acquiring, by a first device, a feature representation generated by a second device on the basis of sample data and according to a second model, wherein the first device has label information for the sample data; and the first device and the second device are used for jointly training a first model at the first device and the second model at the second device. The method further comprises generating, by the first device, a prediction label for the sample data on the basis of the feature representation and according to the first model. The method further comprises determining, by the first device and on the basis of the feature representation, the label information and the predicted label, a total loss value used for training the first model and the second model.

Abstract: The present disclosure discloses an earphone. The earphone may include a hook-shaped component, a connecting component, and a holding component. When the earphone is in a wearing state, the hook-shaped component may be configured to hang between a rear side of an ear of a user and a head of the user. The holding component may be configured to contact a front side of the ear. The connecting component may be configured to connect the hook-shaped component and the holding component and extend from the head to an outside of the head to cooperate with the hook-shaped component to provide the holding component with a pressing force on the front side of the ear.

Abstract: Some embodiments provide an irrigation flow sensor system, comprising: a housing forming a fluid channel to cooperate with conduits of an irrigation system; a paddle wheel device with at least a first blade of a set of the blades comprises a magnetic element; the paddle wheel device is positioned with at least a portion of the blades extends into the fluid channel as the blades rotate about an axis; a magnetic sensor proximate a pathway of the magnetic element as it rotates configured to provide a sensor output every time the magnetic element passes the magnetic sensor; a switch coupled to the magnetic sensor and a current loop, wherein the switch in an activate state is configured to temporarily change the current in the current loop in response to the sensor output, with a rate of change in current corresponding to a flow rate of the fluid flowing.

Abstract: Methods and systems for processing a graphic for light-cured printing, an electronic apparatus, and/or a storage medium are disclosed. In some embodiments, the method includes following steps: obtaining 3D model data of an object to be printed; slicing the 3D model data to obtain sliced data; converting the sliced data to a projected picture; and chunking the projected picture to obtain a plurality of exposed pictures. The plurality of exposed pictures are superimposed and intersected to have an exposed result of the projected picture. In other embodiments, the method includes following steps: placing a photosensitive resin in a material tray, placing a molding platform in the material tray, and placing a molding end surface of the molding platform in contact with the photosensitive resin; sending the plurality of exposed pictures to a bottom surface of the material tray; and curing a corresponding layer of photosensitive resin.

Abstract: A battery cell, a battery, and an electric apparatus are described. A sampling module is connected to a housing and electrically connected to a conductor. At least one conductor is disposed on the housing and electrically connected to an electrode terminal. When status signals from the battery cell are collected, signals from at least one collection point of the sampling module are directly transmitted by the electrode terminal. In this way, the sampling module is integrated on the end cover and at least one conductor is electrically connected to the electrode terminal, which changes the conventional method of transmitting signals to CMC through a flexible circuit board and wiring harness, avoids the transmission of status signals from being affected by factors such as interference coupling and wiring harness short-circuiting, shortens the signal transmission path, and improves the reliability of signal collection by the sampling module.

Abstract: The present disclosure mainly relates to an earphone, comprising a core module and a hook structure. The core module is disposed on a front side of an ear in a wearing state. At least a portion of the hook structure is disposed at a rear side of the ear in the wearing state. The core module includes a core housing and a loudspeaker. The hook structure includes an adapter housing connected with the core housing. At least a portion of the adapter housing is disposed at the front side of the ear in the wearing state. The adapter housing forms an accommodation cavity and one or more through holes communicated with the accommodation cavity. The earphone includes one or more electrode terminals at least partially disposed in the one or more through holes.

Abstract: The present disclosure provides a method for obtaining a recommended explanation, a device, and a computer readable medium. The method includes: generating a recommended item by a recommendation model; calculating a similarity between a plurality of explanatory items and the recommended item; obtaining a predetermined number of explanatory items from the plurality of explanatory items, as a recommended explanation of the recommended item, wherein a similarity between the predetermined number of explanatory items and the recommended item is greater than a similarity between other explanatory items and the recommended item; and outputting identification information of the predetermined number of explanatory items.

Abstract: A single-photon Raman optical frequency comb source is provided, including: a light source assembly, a filtering mechanism, at least three electro-optical modulators, a wavelength division multiplexer and a single photon generating mechanism. The light source assembly is configured to generate a Raman scattering light. The filtering mechanism is configured to pass a light having a specific wavelength, to filter the Raman scattering light and obtain at least three Raman scattering spectral lines. Each electro-optical modulator is configured to modulate a frequency of one of the Raman scattering spectrum lines in one-to-one correspondence, so as to cause a frequency shift of the Raman scattering spectrum line. The wavelength division multiplexer is configured to multiplex all modulated Raman scattering spectral lines and output a Raman optical frequency comb. The single photon generating mechanism is configured to adjust the Raman optical frequency comb to obtain a single-photon Raman optical frequency comb.