Abstract: Disclosed is a skin care product formulation development method and system. The method comprises: acquiring names and weights of new ingredients, searching formulations containing at least one of the new ingredients in a skin care product formulation database, and obtaining a plurality of candidate formulations; deleting the new ingredients contained in each of the candidate formulations to obtain a plurality of supplement formulations; clustering the plurality of supplement formulations based on ingredient correlations to obtain a plurality of cluster groups; calculating a correlation score of each cluster group to the deleted new ingredients respectively; and determining the cluster group with the highest correlation score, and generating a new skin care product formulation based on the cluster group with the highest correlation score.

Abstract: The invention relates to an optical fiber signal direct guided optical module which comprises a connector, a control circuit board and a plastic optical fiber. The control circuit board is connected to the connector and is provided with a functional optical module. The plastic optical fiber is provided with an optical fiber end face corresponding to the functional optical module. The distance L between the end face of the optical fiber and the top face of the functional optical module is in range Of 50 ?m to 150 ?m. Optical signals emitted by the end face of the optical fiber can be directly received by the functional optical module, and optical signals emitted by the functional optical module can also directly penetrate through the end face of the optical fiber to be received by the plastic optical fiber.

Abstract: A camera housing device is provided in this disclose, including a base, a cover, a first electrical connection terminal, a first indicating light, and a second electrical connection terminal. A receiving space is defined on the base to receive a camera. The cover is positioned on the base and covers the receiving space. The first electrical connection terminal is positioned on the base. The first indicating light is positioned on the cover. The cover is capable of emitting a warning light according to a warning signal sent by the camera. The second electrical connection terminal is positioned on the cover and electronically coupled with the first electrical connection terminal. A camera equipment and a rear view system are also provided in this discloses.

Abstract: A cleaning device includes a supporting mechanism, a clamping mechanism arranged on the supporting mechanism and used to clamp a spray head, a heating mechanism, an adjusting mechanism, and a cleaning mechanism. The heating mechanism, the adjusting mechanism, and the cleaning mechanism are arranged on the supporting mechanism. The heating mechanism is used to heat the spray head clamped by the clamping mechanism. The cleaning mechanism is used to inject cleaning liquid into the spray head, dredge the spray head, and detect the spray head. The adjusting mechanism is used to rotate and adjust a position of the cleaning mechanism to complete different tasks on the spray head.

Abstract: Embodiments of this application disclose a target tracking method performed at an electronic device. The electronic device obtains a first video stream and detects candidate regions within a current video frame in the first video stream. The electronic device then extracts, from the candidate regions, a deep feature corresponding to each candidate region and calculates a feature similarity for each candidate region and a deep feature of a target detected in a previous video frame. Finally, the electronic device determines, based on the feature similarity corresponding to the candidate region, that the target is detected in the current video frame. Target detection is performed in a range of video frames by using a target detection model, and target tracking is performed based on the deep feature, so that occurrence of cases such as a target tracking drift or loss can be effectively prevented, to ensure the accuracy of target tracking.

Abstract: The present disclosure provides an apparatus for audio signal output. The apparatus may include a bone conduction assembly configured to generate a bone conduction acoustic wave. The apparatus may include an air conduction assembly configured to generate an air conduction acoustic wave, the bone conduction acoustic wave and the air conduction acoustic wave may represent a same audio signal. The apparatus may include a phase difference between bone conduction acoustic wave and the air conduction acoustic wave may be smaller than a threshold. The apparatus may include a housing configured to accommodate at least a portion of the bone conduction assembly and the air conduction assembly.

Abstract: An asynchronous accounting method for a blockchain is provided. After a block reaches a consensus, different types of data contained in block information of the block are written into message queues corresponding to the respective types of data. Each of the message queues correspond to a different one of the types of data contained in the block information. A next round of block consensus processing is started after the different types of data are written into the message queues corresponding to the respective types of data. The different types of data are read from the message queues corresponding to the respective types of data to perform persistence processing of a blockchain ledger.

Abstract: A firefighting method and system for energy storage, and a storage medium are provided in implementations of the present disclosure. The method includes the following. The BMS turns on a first exhaust fan corresponding to a first battery cluster where a first battery module is disposed to exhaust a preset gas from the energy-storage container, when a first gas detector disposed in the first battery module detects the preset gas. The BMS determines whether to turn on a first firefighting apparatus corresponding to the first battery cluster based on a concentration of the preset gas at each moment in a preset period and a temperature of the first battery module at each moment in the preset period, to extinguish a fire at a battery module in the energy-storage container.

Abstract: Disclosed is a USB game microphone with double sound card output devices, which belongs to the technical field of microphones. The USB game microphone includes a master chip, a headphone amplifier chip circuit, a microphone core, and a master volume potentiometer, wherein the master chip is at least provided with two sound cards and is further electrically connected to a hybrid potentiometer, outputs of the two sound cards are filtered by an operational amplifier low-pass filter after being adjusted in an equal proportion by the hybrid potentiometer, and signals of left and right sound channels are amplified and outputted by the headphone amplifier chip circuit. The master chip is further electrically connected to a touch switch and a light touch switch, the touch switch controls the mute switching of the microphone, and the light touch switch is used for switching the noise reduction of the microphone.

Abstract: This application discloses an ability aiming method in a three-dimensional virtual environment performed at a computer device. The method includes: displaying a user interface (UI) of an application program, the UI including a virtual environment picture obtained by observing the three-dimensional virtual environment from the perspective of a third-person point of view; receiving a drag operation on an ability aiming control in the UI, the drag operation from a first operating point and a second operating point that are located on the ability aiming control, the first operating point being an initial operating point and the second operating point being a current operating point of the drag operation; and displaying a three-dimensional ability aiming indicator in the virtual environment picture in response to the drag operation, an ability aiming direction of the three-dimensional ability aiming indicator being parallel to a drag direction of the drag operation in the UI.

Abstract: A hybrid electric driving device includes an engine, a first motor, a second motor, a power splitting mechanism, and a bypass mechanism. The power splitting mechanism includes at least one planetary gear set, an input end, a first output end, and a second output end. The input end of the power splitting mechanism is connected with the engine. The first output end of the power splitting mechanism is connected with the first motor. The second output end of the power splitting mechanism is connected with a wheel of a vehicle. The second motor is connected with the wheel. The bypass mechanism is configured to connect with or separated from the first output end and the second output end of the power splitting mechanism. The bypass mechanism includes an engagement separation component.

Abstract: Provided are a positive electrode plate, a lithium ion battery, and an energy storage device. The positive electrode plate includes a positive current collector and a positive active substance layer disposed on at least part of a surface of the positive current collector. The positive active substance layer contains a positive active substance doped with a metal element M. A doping amount of the metal element M in the positive active substance of the positive active substance layer gradually decreases in a thickness direction of the positive electrode plate. A ratio of a doping amount of the metal element M in the positive active substance of the positive active substance layer closest to the positive current collector to a doping amount of the metal element M in the positive active substance of the positive active substance layer farthest from the positive current collector is less than or equal to 8.

Abstract: A method for constructing a library of cell-free DNAs in body fluids, comprising directly acting a transposase or an endonuclease on a body fluid sample, fragmenting the cell-free DNAs within, and performing amplification to obtain a library. Also provided is a test kit using the present method for prenatal diagnosis or early detection of cancer.