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: This application provides a sampling component, including a body portion and a lap portion. The body portion is configured to transmit a sample signal. The lap portion laps the body portion at one end and laps a point for sampling at the other end, to acquire the sample signal; and the lap portion is provided with a fusing structure configured to implement fusing protection on the body portion.

Abstract: A nanodelivery system based on globulin-1 S allele, a preparation method therefor and use thereof are provided. The preparation method includes the following steps of: dissolving globulin-1 S allele in a NaCl solution, and performing magnetical stirring until the globulin-1 S allele is completely dissolved to obtain a mixed solution; self-assembly: centrifuging the mixed solution, taking the supernatant to be dispersed into a dispersion solution for self-assembly to obtain a globulin-1 S allele dispersion; and adding hydrophobic plant polyphenol to the globulin-1 S allele dispersion, performing well mixing and centrifuging, and removing the supernatant to obtain the nanodelivery system based on the globulin-1 S allele.

Abstract: The present disclosure describes techniques of performing machine unlearning in a recommendation model. An unlearning process of the recommendation model may be initiated in response to receiving a request for deleting a fraction of user data from any particular user. The recommendation model may be pre-trained to recommend content to users based at least in part on user data. Values of entries in a matrix corresponding to the fraction of user data may be configured as zero. The matrix may comprise entries denoting preferences of users with respect to content items. Confidence values associated with the fraction of user data may be configured as zero to block influence of the fraction of user data on performance of the recommendation model. The unlearning process may be implemented by performing a number of iterations until the recommendation model has converged.

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: Provided are an electronic control device, a battery device, a related device, an energy storage system, and a charging network. The electronic control device comprises a battery management circuit board and an electrical connection assembly, wherein the battery management circuit board is provided with a first connecting terminal, which first connecting terminal is electrically connected to an internal circuit of the battery management circuit board; and the electrical connection assembly comprises a bearing member and a conductive component, the conductive component being connected to the bearing member, and the conductive component comprising a conductive part, a second connecting terminal, and a third connecting terminal. The present application is aimed at replacing the connection mode of a wire harness, so as to simplify the structure and improve the integration level.

Abstract: A method and device for performing a backlight demonstration on a television, and related devices, wherein method for performing a backlight demonstration on a television includes: acquiring a backlight demonstration instruction from a user; and utilizing a timing control circuit and a local dimming circuit in a system-on-chip of a television to generate corresponding backlight demonstration control data to control a display screen and a backlight array of the television to perform the backlight demonstration, when the backlight demonstration instruction from the user is acquired. The technical solution of the present disclosure can reduce the cost of backlight demonstration on a television.

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: A speaker comprises a housing, a transducer residing inside the housing, and at least one sound guiding hole located on the housing. The transducer generates vibrations. The vibrations produce a sound wave inside the housing and cause a leaked sound wave spreading outside the housing from a portion of the housing. The at least one sound guiding hole guides the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing. The guided sound wave interferes with the leaked sound wave in a target region. The interference at a specific frequency relates to a distance between the at least one sound guiding hole and the portion of the housing.

Abstract: A method for simultaneous detection of multiple allergens in food includes: diluting a plurality of target allergen proteins in a concentration gradient, adding them to an ELISA plate, and incubating overnight; washing the ELISA plate with a PBST washing solution to remove unbound proteins; adding 5% BSA blocking reagent to the ELISA plate, incubating with shaking, and washing away the blocking reagent; premixing aptamers of the plurality of target allergen proteins into a premixed solution; adding the premixed solution to the ELISA plate from which the blocking reagent is washed away, incubating with shaking, and washing away the premixed solution; adding ultrapure water to the ELISA plate, incubating at 95° C. to denature the allergen proteins, and recovering a supernatant containing the aptamers; using the supernatant as a DNA template, performing Taqman qPCR amplification and fluorescence signal detection to obtain a reaction ct value; and plotting a standard curve.

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: 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: The present disclosure relates to an earphone. The earphone includes an ear hook and a sound production portion connected to each other, wherein in a wearing state, the ear hook is hooked between an auricle and a head of a user, the sound production portion is located at an anterior side of the auricle; the sound production portion comprises a core housing and a first capacitance plate, the core housing including a connection end connected to the ear hook and a free end away from the connection end, wherein at least a portion of the free end extends into a concha cavity or abuts against the auricle; the first capacitance plate is disposed inside the core housing and at least a portion of the first capacitance plate is located at the free end; the first capacitance plate is configured to detect whether the earphone is in the wearing state.

Abstract: The application provides an apparatus, platform, method and medium for intention importance interference. The apparatus includes an interface configured to receive user-related information; and a processor coupled to the interface and configured to: extract data related to different aspects of a user from the user-related information; generate a plurality of intention probes based on the data related to different aspects of the user, each intention probe comprising an intention and associated data items; infer an importance of each intention probe by calculating a score of each associated data items of the intention probe based on the data related to different aspects of the user; and provide information associated with an intention probe with a highest importance.

Abstract: The present disclosure relates to an earphone. The earphone includes a first speaker, a second speaker, and a driving circuit. The driving circuit is configured to drive the first speaker and the second speaker, at least a portion of a frequency band of sound output by the first speaker is lower than a frequency band of sound output by the second speaker. The earphone further includes a high-pass frequency divider disposed between the driving circuit and the second speaker and configured to perform frequency division on an audio driving signal provided by the driving circuit to the second speaker, and a frequency-dividing point of the high-pass frequency divider is set to be not lower than 6 kHz.

Abstract: A headphone is provided. The headphone includes a main control circuit board and a capacitor electrode plate. The capacitor electrode plate is disposed in a region of the headphone that is close to a user's skin in a wearing state of the headphone. The capacitor electrode plate is configured to generate an electric signal based on whether the user wears the headphone. The capacitor electrode plate includes a first main portion electrically connected to the main control circuit board, a second main portion spaced apart from the first main portion, and a first connecting portion. The first connecting portion connects the first main portion and the second main portion in a spaced region between the first main portion and the second main portion. The first connecting portion is bent relative to at least one of the first main portion and the second main portion.

Abstract: The present disclosure relates to an earphone. The earphone comprises a housing assembly including a first housing, a deformation member, and a sensor. The first housing includes a first side wall portion and a second side wall portion that are disposed opposite to and spaced apart from each other. When subjected to an opposing compression force applied along a spacing direction, at least one of the first side wall portion or the second side wall portion deforms, and the first side wall portion and the second side wall portion jointly compress the deformation member such that the deformation member bends laterally in the spacing direction. The sensor is disposed in a bending region of the deformation member, and generates an electrical signal when a bending degree of the bending region is greater than a preset bending threshold.

Abstract: The present invention relates to a method for synthesizing calcium-based biominerals, particularly hydroxyapatite (found in vertebrate bones and teeth) and calcium carbonate (found in plankton and corals). This fully biocompatible mineralization strategy not only offer fundamental insights into the biomineralization process, starting from mineral ions to amorphous precursors and eventually to specific minerals, but also contributes to our scientific understanding of life's origin. Furthermore, it showcases great promise for therapeutic applications, such as actively repairing damaged tooth enamel and promoting bone growth.

Abstract: A sound output device is provided.

Abstract: The embodiment of the present disclosure discloses a wearable device, including: a wearing part including: a connection section and a concave section, the concave section being connected to the connection section. The concave section causes an upper edge of the wearing part to have a downward depression on the wearing part; the concave section is provided with an acoustic output end inside.