Abstract: The present application discloses an adjustment assembly and a headrest. The adjustment assembly includes: a guiding rod; a fixing member, fixed to an end of the guiding rod; a driving portion, movably connected to the fixing member; and a first screw, engaged to the fixing member with threads, and the driving portion is connected to the fixing member by the first screw, wherein the driving portion includes a first motor, and the first motor is used to drive the driving portion to linearly move in respect to the fixing member along a direction close to or away from the fixing member. The adjustment assembly of the application can be adjusted electrically, such that the operation is convenient, and the structure is simple and reliable.

Abstract: Systems, methods, and computer program products calculate a historical feature similarity point distribution associated with a first machine learning model, calculate a real-time feature similarity point distribution associated with a second machine learning model, and automatically provide, based on a comparison of the historical feature similarity point distribution to the real-time feature similarity point distribution, an indication of whether the second machine learning model is aligned with the first machine learning model.

Abstract: A wheelchair structure for preventing pressure ulcers is disclosed. A lifting mechanism is mounted under a seat cushion of a wheelchair, and a knee support is disposed on the front of a seat cushion. When the lifting mechanism lifts the seat cushion, proximal ends of tibias of a user can just lean on the knee support, and a foot pedal of the wheelchair can make the user have a posture with bent knees and in a shape of “<”, so that the user can change a sitting posture to prevent pressure ulcers caused by long-term pressure on the buttocks when sitting in the wheelchair.

Abstract: Provided is a method for fraud prevention using deep learning and survival models. The method may include receiving, with at least one processor, transaction data associated with a plurality of transactions of at least one payment account. At least one attempted attack may be detected based on the transaction data. A fraud risk score for each subperiod of a plurality of subperiods in a time period following the at least one attempted attack may be generated based on the transaction data using a deep learning model and a survival model. The fraud risk score for each respective subperiod may be associated with a probability that a fraudulent transaction will not occur by the respective subperiod. A system and computer program product are also disclosed.

Abstract: A method for communicating between a wireless earphone and a charging case, a charging case, a TWS earphone and a TWS earphone system are provided. In the method, in response to a case opening signal, the earphone case I/O controlling module is controlled to set an operation attribute of the first I/O interface as a communication interface. A predetermined negotiation signal is transmitted to the wireless earphone via the first I/O interface. It is determined whether a negotiation confirmation signal corresponding to the predetermined negotiation signal is received from the wireless earphone via the first I/O interface. In a case that the negotiation confirmation signal corresponding to the predetermined negotiation signal is received from the wireless earphone via the first I/O interface, the charging case enters into a communication mode for communicating with the wireless earphone.

Abstract: An earphone, an earphone control method and an earphone control device are provided. The earphone control method and the earphone control device are applied to an earphone arranged with an ultrasonic transceiver and an ultrasonic receiver.

Abstract: A battery pack and a method for disassembling the battery pack are provided. The battery pack includes a battery box, a first connector, a first battery, and a second battery. The first connector is detachably disposed in the battery box. The first battery is fixed on the first connector to be arranged in the battery box through the first connector. The second battery is arranged in the battery box. The first connector is not fixedly connected to the second battery to prevent the second battery from blocking the first battery and the first connector from being simultaneously detached from the battery box.

Abstract: Provided is a method for fraud prevention using deep learning and survival models. The method may include receiving, with at least one processor, transaction data associated with a plurality of transactions of at least one payment account. At least one attempted attack may be detected based on the transaction data. A fraud risk score for each subperiod of a plurality of subperiods in a time period following the at least one attempted attack may be generated based on the transaction data using a deep learning model and a survival model. The fraud risk score for each respective subperiod may be associated with a probability that a fraudulent transaction will not occur by the respective subperiod. A system and computer program product are also disclosed.

Abstract: The present disclosure provides a driving video recorder for an automotive, which includes: a housing having a side wall, a top wall with an air outlet, and a bottom wall with an air inlet; a first electric fan arranged on the bottom wall above the air inlet and in a vertical middle plane of the housing for directing outside air into the housing; two sets of lenses for image capturing arranged at the side wall and positioned symmetrically on both sides of the vertical middle plane of the housing; and heat generating electrical components provided within the housing. The driving video recorder according to the present disclosure has a symmetrically distributed lens structure ensuring system stability, reliability, and enhanced functionality.

Abstract: A brain imaging system and a brain imaging method are provided. The brain imaging system includes a first imaging device, a second imaging device and a processor. The first imaging device captures a first brain image set by scanning a patient, and the second imaging device captures a second brain image set. The processor is configured to: pre-process and enhance first and second brain image sets; select first features that are optimal for estimating cerebral perfusion and select second features that are optimal for brain lesion identification; obtain, by performing calculations on first features, a plurality of brain perfusion indices; and identify, by inputting the second features to a third deep learning model having been trained, position information and volume information of one or more target brain lesions in the brain of the patient.

Abstract: Embodiments of the present disclosure provide an earphone debugging method and device, and a storage medium. The earphone debugging method comprises the following steps: obtaining configuration parameters to be updated of a slave earphone and configuration parameters to be updated of a master earphone by the master earphone; sending, by the master earphone, the configuration parameters to be updated of the slave earphone to the slave earphone, which allows the slave earphone to be operated according to the configuration parameters to be updated of the slave earphone; and the master earphone being operated according to the configuration parameters to be updated of the master earphone. According to the embodiments of the present disclosure, the earphone debugging efficiency is improved.

Abstract: A method of fabricating a metal mask includes receiving a conductive substrate with a first surface, a second surface opposite to the first surface, a third surface connecting the first and second surfaces, and a fourth surface opposite to the third surface and connecting the first and second surfaces. The method further includes forming trenches in a direction from the first surface to the second surface and protrusions in the conductive substrate. The trenches and the protrusions are alternately arranged. The method further includes filling the trenches with an insulation material covering a first area of the protrusions, forming a metal layer on the conductive substrate overlying a second area different from the first area of the protrusions, removing the insulation material, and removing the conductive substrate. The metal layer becomes a metal mask with a three-dimensional structure including strip-shaped structures.

Abstract: Disclosed is a wireless earphone linking method that includes the following: detecting a motion state of a wireless earphone; when the wireless earphone is moved, determining whether a working mode of the wireless earphone is a wearing mode; if so, determining whether the wireless earphone and a terminal are in a linked state; and if the wireless earphone and the terminal are not in a linked state, controlling the wireless earphone to send a linking request to the terminal.

Abstract: A method of fabricating a metal mask includes receiving a metal planar substrate and patterning the metal planar substrate. The metal planar substrate includes a first surface and a second surface opposite to the first surface. The patterning the metal planar substrate includes forming strip-shaped structures, forming through holes, and forming a blind hole in a direction from the first surface to the second surface. The through holes extend to the first surface and the second surface. The through holes and the strip-shaped structures are alternately arranged. The blind hole extends across the through holes.

Abstract: A method of fabricating a metal mask includes receiving a conductive substrate with a first surface, a second surface opposite to the first surface, a third surface connecting the first and second surfaces, and a fourth surface opposite to the third surface and connecting the first and second surfaces. The method further includes forming trenches in a direction from the first surface to the second surface and protrusions in the conductive substrate. The trenches and the protrusions are alternately arranged. The method further includes filling the trenches with an insulation material covering a first area of the protrusions, forming a metal layer on the conductive substrate overlying a second area different from the first area of the protrusions, removing the insulation material, and removing the conductive substrate. The metal layer becomes a metal mask with a three-dimensional structure including strip-shaped structures.

Abstract: A metal mask and an inspecting method thereof are provided. In the method, a metal mask having a first and a second long side, a first and a second short side, and plural pattern regions is provided. Afterwards, based on the pattern regions adjacent to the first and second long sides, a first reference straight line adjacent to the first long side and a second reference straight line adjacent to the second long side are defined. Then, a first maximum offset length between the pattern regions adjacent to first long side and first reference straight line is measured. A second maximum offset length between the pattern regions adjacent to second long side and second reference straight line is measured. When a difference between the first and second maximum offset lengths is less than or equal to 20 ?m, the metal mask is determined to meet an inspecting standard.

Abstract: The present invention belongs to the technical field of preparation of light metal alloy materials, in particular to a method for producing a magnesium-lithium alloy by a gaseous co-condensation method. The method comprises the steps of: 1) mixing and briquetting a lithium salt, a refractory agent and a catalyst under pressure, and then thermally decomposing to form an unsaturated composite oxide; 2) respectively crushing and ball-milling, and then briquetting the unsaturated composite oxide, magnesium oxide, a reducing agent and a fluxing agent; 3) reducing briquettes in vacuum; 4) making a gas pass through a first condensing chamber of a temperature control device, and then purifying; 5) The purified metal gas is condensed into the condensing phase of the alloy through the second condensing chamber of a quenching device; 6) obtaining the magnesium-lithium alloy with a purity being 99.5% or above by virtue of smelting and flux-refining, and then purifying by distillation.

Abstract: A method for preparing a high-purity metal lithium by a vacuum thermal reduction method includes the following steps: obtaining Li2O.(2-x)CaO by carrying a vacuum thermal decomposition process on a lithium-containing raw material in the presence of a refractory agent and a catalyst; mixing the obtained oxide with the fluxing agent, the catalyst and a reducing agent according to a certain ratio, and then briquetting; carrying out vacuum thermal reduction in a vacuum reduction furnace, and performing centrifugal sedimentation and micron ceramic dust removal on lithium vapor obtained by the thermal reduction to obtain a high-purity metal gas; and removing metal impurities from the gas by controlling a condensation temperature and a condensation speed of the gas so as to purify the lithium vapor, and obtaining a high-purity metal lithium with a rapid cooling technology.

Abstract: Disclosed are a method and a device for controlling a serial interface of a wireless earphone, a wireless earphone, and a computer readable storage medium. The method includes: disabling a serial interface function of the wireless earphone in a case that a first predetermined condition is met, where the first predetermined condition includes that the wireless earphone is outside a charging case, or the wireless earphone is in the charging case and a lid of the charging case is closed; and enabling the serial interface function of the wireless earphone in a case that a second predetermined condition is met, where the second predetermined condition includes that the wireless earphone is in the charging case and the lid of the charging case is open.