Abstract: Embodiments of this application relate to the field of storage technologies, and disclose a data backup method and a terminal, to back up user data in a terminal when the terminal cannot be used. A specific solution is as follows: A terminal includes a first data partition, and the first data partition supports to start an operating system when the terminal is powered on. The terminal starts the operating system by using a second data partition after detecting a power-on failure of the terminal or detecting a preset operation of a user. The second data partition is a blank data partition. After the operating system is successfully started, the terminal transmits user data in the first data partition to a first storage medium. The first storage medium is located outside the terminal and is connected to the terminal.

Abstract: The present disclosure provides an experiment platform for simulating fire in an underground traffic conversion channel, including: a model body configured to simulate fire in the an underground traffic conversion channel; a burner connected to the model body and configured to generate smoke; and a smoke imaging system including laser sheet light sources and image recording devices configured to record smoke distribution images. The laser sheet light sources are in the model body, and plane laser light emitted by the laser sheet light sources is parallel to a flow direction of the smoke. The image recording devices are in one-to-one correspondence to the laser sheet light sources and are arranged outside an observation window of the model body. One laser sheet light source and one image recording device corresponding thereto each have a filter configured to filter out laser light of a same wavelength.

Abstract: The present invention relates to a base station antenna, comprising: a plurality of first radiating elements that are arranged as a first vertically-extending array; a plurality of second radiating elements that are arranged as a second vertically-extending array, where the second radiating elements are staggered in the vertical direction with respect to the first radiating elements; wherein phase centers in an azimuth plane for first sub-arrays of the first radiating elements are substantially the same as phase centers in the azimuth plane for respective third sub-arrays of the second radiating elements, and wherein the first sub-arrays each have a first number of first radiating elements and the third sub-arrays each have a second number of second radiating elements, the first number being different than the second number. This can effectively improve the pattern of the base station antenna.

Abstract: An electrocardiograph acquisition circuit, device, method and system are provided. The electrocardiograph acquisition circuit includes: a wireless transmission circuit configured to receive a first electrocardiographic voltage from a second electrocardiograph acquisition device; an electrocardiograph electrode configured to detect an electrical signal on biological skin; an acquisition circuit configured to obtain a second electrocardiographic voltage by acquiring the electrical signal detected by the electrocardiograph electrode; and a control circuit configured to obtain an electrocardiograph index signal by processing the first electrocardiographic voltage received by the wireless transmission circuit and the second electrocardiographic voltage acquired by the acquisition circuit based on a first acquisition time of the first electrocardiographic voltage and a second acquisition time of the second electrocardiographic voltage.

Abstract: A spline-based animation process creates an animation sequence. The process receives a plurality of frames that illustrate a figure based on a design template (e.g., which includes a skeleton having segments). The process further identifies a spine segment, generates hip, shoulder, and head segments at respective positions relative to the spine segment, identifies limb and facial feature segments, and converts the segments into respective splines bound between endpoints. The process further determines changes between frames for respective splines and animates movement of the figure over a sequence of frames based on the changes.

Abstract: A method for detecting fetal blood oxygen saturation, including: using at least two detection light of different wavelengths, to irradiate a fetus in an examined pregnant woman's abdomen in a time-sharing manner and acquiring first photoplethysmography signals corresponding to the abdomen under irradiation of the respective wavelengths of detection light, and to irradiate a detection site except the examined pregnant woman's abdomen in a time-sharing manner and acquiring second photoplethysmography signals corresponding to the detection site under irradiation of the respective wavelengths of the detection light; determining a target photoplethysmography signal of the fetus that corresponds to the detection light of each wavelength, according to the first photoplethysmography signals and the second photoplethysmography signals that correspond to the detection light of each wavelength; and determining the fetal blood oxygen saturation, according to respective target photoplethysmography signals determined.

Abstract: An ultrasonic cutter detection method and device, the method comprises the following steps: preliminary detection: frequency amplitude detection and fall-of-potential detection, if the ultrasonic cutter fails the above two detection solutions in the preliminary detection, repeating the two detections; if the ultrasonic cutter still fails the above two detection solutions, the ultrasonic cutter is judged to be unqualified; and reinspection: free modal detection and pressure modal detection. Using differences of the ultrasonic cutters surface in micro-crack directions that result in different degrees of sensitivity of crack to different ultrasonic vibration modes, combined with the fall-of-potential method and frequency amplitude detection method, a detection rate and a detection velocity of an unqualified ultrasonic cutter can be improved.

Abstract: A battery system includes the battery compartment, haploid battery, polyploid battery and power management system; the bottom of battery compartment is divided into several elementary unit compartments provided with power jacks at four corners; each power jack is connected through a wire to form a power output terminal, then connected to the input terminal of the power management system; the size of the haploid battery matches that of a single elementary unit compartment, the polyploid battery isn't arranged in a single row, and two power contacts matching with the power jack are arranged on the diagonal of the battery's bottom surface; after power on, the power management system applies logics to determine models of the batteries in different positions of the battery compartment according to the voltage signal detected, then integrate voltage of each battery to the voltage required by appliance.

Abstract: A data receiver circuit includes a summer circuit configured to receive an input signal that encodes multiple data symbols, and combine the input signal with a feedback signal to generate an equalized input signal, which is used to generate a clock signal. The data receiver circuit also includes multiple data slicer circuits that sample, using the clock signal and multiple voltage offsets, to generate multiple samples for a particular data symbol. A precursor compensation circuit included in the data receiver circuit may generate an output value for the particular data symbol using the multiple samples. The data receiver circuit also includes a post cursor compensation circuit that generates the feedback signal using at least one of the multiple samples and a value of a previously received sample.

Abstract: The present invention relates to an antenna assembly for a beamforming antenna, comprising a reflector and an antenna array that includes a plurality of first radiating elements that are arranged as a first vertically extending array, the first radiating elements extending forwardly from the reflector; and a plurality of second radiating elements that are arranged as a second vertically extending array, the second radiating elements extending forwardly from the reflector. Two adjacent first radiating elements are spaced apart from one another by a first distance, and a first radiating element and an adjacent second radiating element are spaced apart from one another by a second distance. The first distance is substantially equal to the second distance. The antenna assembly further comprises a plurality of parasitic elements that are placed along sides of the first and second of the vertically extending arrays.

Abstract: A power supply circuit comprises a power conversion circuit, a voltage selection circuit, and a voltage regulator. The voltage regulator coupled to the voltage selection circuit and a digital-to-analog converter (DAC), and the voltage regulator is configured to provide supply power to the DAC; the power conversion circuit is coupled to a first power supply and a power amplifier (PA), and the power conversion circuit is configured to convert, based on output power of the PA, a voltage of the first power supply into an output voltage that supply power to the PA; and the voltage selection circuit is coupled to a second power supply, the power conversion circuit and the voltage regulator, and the voltage selection circuit is configured to select the second power supply or the power conversion circuit to supply power to the voltage regulator based on an output voltage of the power conversion circuit.

Abstract: A radiating element comprises a radiator, a feed stalk and a parasitic element. The radiator is fed by the feed stalk, and the parasitic element includes an electrically conductive structure that includes a meandered electrically conductive path. A coupling capacitor is formed between the electrically conductive structure and the radiator, and a center frequency of an operating frequency band of the radiator is higher than a center frequency of a first operating frequency band of the parasitic element.

Abstract: An electronic device, a list deduplication method and a medium. The method includes: acquiring to-be-processed lists one by one from a database, and analyzing whether the acquired lists have first-type Identifiers (IDs); if the lists have the first-type IDs, looking up customer lists with same first-type IDs as the first-type IDs of the lists in a valid customer database; if the customer lists are not found, looking up customer lists with the same second-type IDs as those of the lists in the valid customer database; if the customer lists are found, checking whether the customer lists have first-type IDs; if the found customer lists have the first-type IDs, refreshing the found customer lists according database, and then comparing the second-type IDs of the lists with the second-type IDs of the customer lists; and if they are matched, deduplicating the lists to be processed.

Abstract: An integral SMP connector assembly for a base station antenna comprising a base, in which at least two SMP connectors are configured to extend away from a backplate of the base station antenna from an upper surface of the base, the base including: at least one connecting portion which connects the base to the backplate so that the upper surface of the base faces the backplate; and a close looped groove located in the upper surface of the base and surrounding the at least one connecting portion and the at least two SMP connectors. The integral SMP connector assembly further comprises a seal received in the groove and configured to provide an airtight seal between the upper surface of the base and the backplate.

Abstract: A separator for an electricity storage device has a cross-sectional crystal orientation of 0.85 or greater, and/or a method for producing the separator for an electricity storage device comprises a step of using a continuous mixer under conditions with a temperature of 20° C. to 70° C., a shear rate of 100 to 400,000 seconds?1 and a residence time of 1.0 seconds to 60 seconds, for mixing of polyethylene-containing polyolefin powder with a plasticizer to produce a mixed slurry, a step of extruding the mixed slurry and cooling it to solidification to process it into a cast sheet, and a step of biaxially stretching the cast sheet to an area increase factor of 20 to 200.

Abstract: There is provided a method for producing a separator for an electricity storage device that includes a step of contacting a porous body formed from a silane-modified polyolefin-containing molded sheet with a base solution or acid solution, and a separator for an electricity storage device comprising a microporous film with a melted film rupture temperature of 180° C. to 220° C. as measured by thermomechanical analysis (TMA).

Abstract: A radio-frequency signal grounding device for an antenna comprises: a substrate layer; a grounding transmission line on a first side of the substrate layer; a metal layer on a second side of the substrate layer, the metal layer including at least one gap such that the metal layer is divided into at least a first sub-region and a second sub-region, where the gap is configured to block at least one of a low frequency signal and a direct current signal; a metal plate; and a dielectric layer that is disposed between the metal plate and the metal layer. The radio-frequency signal grounding device can achieve good radio-frequency signal grounding and low frequency/direct current signal blocking within a limited space via a multi-coupling design.

Abstract: The present invention relates to a base station antenna, comprising: a plurality of first radiating elements that are arranged as a first vertically-extending array; a plurality of second radiating elements that are arranged as a second vertically-extending array, where the second radiating elements are staggered in the vertical direction with respect to the first radiating elements; wherein phase centers in an azimuth plane for first sub-arrays of the first radiating elements are substantially the same as phase centers in the azimuth plane for respective third sub-arrays of the second radiating elements, and wherein the first sub-arrays each have a first number of first radiating elements and the third sub-arrays each have a second number of second radiating elements, the first number being different than the second number. This can effectively improve the pattern of the base station antenna.