Abstract: The disclosure provides a collaborative deep learning method and a collaborative deep learning apparatus. The method includes: sending an instruction for downloading a global model to a plurality of user terminals; receiving a set of changes from each user terminal; storing the set of changes; recording a hash value of the set of changes into a blockchain; obtaining a storage transaction number from the blockchain for the hash value of the set of changes; sending the set of changes and the storage transaction number to the plurality of user terminals; receiving the set of target user terminals from the blockchain; updating the current parameters of the global model based on sets of changes corresponding to the set of target user terminals; and returning the sending the instruction, to update the global model until the global model meets a preset condition.

Abstract: The present disclosure discloses an acoustic output device. The acoustic output device may include a first acoustic driver including a first diaphragm; a second acoustic driver including a second diaphragm; a control circuit electrically connected with the first acoustic driver and the second acoustic driver respectively, the control circuit provides a first electrical signal for driving a vibration of the first diaphragm, and a second electrical signal for driving a vibration of the second diaphragm, and a phase of the first electrical signal and a phase of the second electrical signal are opposite; and a housing supporting the first acoustic driver and the second acoustic driver, wherein a sound generated by the vibration of the first diaphragm is radiated outward through a first sound guide hole on the housing, and a sound generated by the vibration of the second diaphragm is radiated outward through a second sound guide hole on the housing.

Abstract: A system includes an RF signal source configured to output an RF signal at a first frequency, and a first controller configured to generate a first data signal encoding instructions at a second frequency. A first filter is coupled to the RF signal source. The first filter is a low pass filter having a cutoff frequency between the first frequency and the second frequency. The first filter is configured to couple to a first end of a cable. A second filter is coupled to the first controller. The second filter is a high pass filter having a cutoff frequency between the first frequency and the second frequency. The second filter is configured to couple to the first end of the cable. The system includes an impedance matching network configured to couple to a second end of the cable. A first electrode is coupled to the impedance matching network.

Abstract: A system includes: a ring bus; a plurality of static uninterruptible power supplies (UPSs), each static UPS of the plurality of static UPSs including: at least one battery; an input that is electrically connected to a first external electrical power source; and an output that is electrically connected to a load, and, via a first corresponding choke, to the ring bus; at least one fuel-cell interface converter (FIC) that converts direct current (DC) electrical power to alternating current (AC) electrical power, each FIC of the at least one FIC being electrically connected to the ring bus via a second corresponding choke; and a fuel cell module corresponding to and electrically connected to each FIC, the fuel cell module including a fuel cell.

Abstract: The present application discloses a sound-output device, including a vibration speaker configured to generate a bone-conducted sound wave; and an air-conducted speaker configured to generate an air-conducted sound wave. The sound-output device further comprises a signal processing module configured to generate a control signal, wherein, the vibration speaker includes a vibration assembly electrically connected to the signal processing module to receive the control signal, and generate the bone-conducted sound wave based on the control signal, and the air-conducted speaker includes a housing coupled to the vibration assembly to generate the air-conducted sound wave based on the bone-conducted sound wave.

Abstract: The present disclosure provides an earphone comprising a sound production component and an ear hook. In a wearing state, the ear hook is configured to place the sound production component at a position near an ear canal but not blocking the ear canal. An inner contour of the ear hook's projection on a user's sagittal plane includes a first curve having an extremum point in a first direction. The first direction is perpendicular to a long-axis direction of a projection of the sound production component on the sagittal plane. The extremum point is located behind a projection point of an upper vertex of the ear hook on the sagittal plane, and the upper vertex is a highest point of an inner contour of the ear hook along the user's vertical axis. An inclination angle of the long-axis direction relative to a horizontal direction is within a range of 13°-21°.

Abstract: A memory adaptive temperature controlling method, a storage device, and a control circuit unit are provided. In this exemplary embodiment, the temperature value is obtained according to the temperature measured by the thermal sensor, and the access speed to be reached is calculated according to the temperature change rate within the specific time range and the adjustment percentage when it is determined that the speed-down or speed-up operation is required to be performed. By adjusting the access speed of the memory storage device in a stepwise manner, the temperature of the memory storage device may be stabilized, thereby striking the balance between the temperature stability and the system performance of the memory storage device.

Abstract: Catalyst systems that are resistant to high-temperature sintering and methods for preparing such catalyst systems that are resistant to sintering at high temperatures are provided. Methods of forming such catalyst systems include contacting a support having a surface including a catalyst particle with a solution comprising a metal salt and having an acidic pH. The metal salt is precipitated onto the surface of the support. Next, the metal salt is calcined to selectively generate a porous coating of metal oxide on the surface of the support distributed around the catalyst particle.

Abstract: Embodiments of the present disclosure relates to a warehousing system. The warehousing system includes a first ground marking arranged on a ground surface of a warehouse. The first ground marking includes machine-readable characteristics representing a warehouse location identification number (ID). The machine-readable characteristics include one or more horizontal lines parallelly arranged at equal intervals, wherein the total number of the one or more horizontal lines corresponding to a first information of the warehouse location ID, and one or more vertical lines parallelly arranged at equal intervals, wherein the total number of the vertical lines corresponding to a second information of the warehouse location ID that is different from the first information. The machine-readable characteristics are recognizable by one or more cameras of a self-driving system, and the self-driving system is operable to determine its position on a map of the warehouse based on the warehouse location ID.

Abstract: An electric guide rail type conveying system comprises a driving motor, a guide rail, a main transmission case, an auxiliary transmission case, a conveying member, and a moving trolley. Both ends of the conveying member are elastically deformably wound on the first rotating member and the second rotating member of a main transmission case body in two opposite winding direction. Before installation, the conveying member is basically wound on the first rotating member and the second rotating member. When a relative outer portion of the conveying member wound on the first rotating member is separated from the rotating member, a first elastic resilience opposite to one of the two opposite winding direction is generated; with the increase of a portion, separated from the first rotating member, of the conveying member, the first elastic resilience will increase; otherwise, the first elastic resilience will decrease.

Abstract: A blackboard eraser cleaning device is provided and includes an outer shell (1). A cover (2) is arranged at the upper part of the outer shell (1), an inner shell (3) is arranged inside the outer shell (1). A clamping mechanism (19) is arranged at the upper end of the inner shell (3). A leaning station (8) is defined inside the clamping mechanism (19). A cylinder (9) is arranged around the clamping mechanism (19). A height adjustment mechanism (10) is arranged inside the outer shell (1). The height adjustment mechanism (10) includes a servo (101) arranged inside the outer shell (1) and located on a side of the inner shell (3). According to the present application, a variety of cleaning modes may be achieved to meet the actual usage of the blackboard eraser.

Abstract: The present disclosure relates to the field of materials for uranium extraction from seawater (UES), and in particular, to a photothermal photocatalytic membrane for seawater desalination and uranium extraction and a preparation method therefor. The present disclosure provides a photothermal photocatalytic membrane for seawater desalination and uranium extraction and a preparation method therefor. The preparation method includes: fixing a treated carbon cloth to a glass plate, pouring a casting solution 1 onto the carbon cloth to form a first layer of film, forming a second layer of film using a casting solution 2, and putting the second layer of film into a first coagulation bath and a second coagulation bath in sequence to form the photothermal photocatalytic membrane. The photothermal photocatalytic membrane is supported by the carbon cloth, and a surface of the photothermal photocatalytic membrane is of a micro-nano structure.

Abstract: Fluorescent orange latexes are provided which comprise water and fluorescent agent-incorporated resin particles, the particles comprising a resin, Solvent Red 49 as a red fluorescent agent, and Solvent Yellow 98 as a yellow fluorescent agent, wherein the fluorescent orange latex has a weight ratio of the Solvent Yellow 98 to the Solvent Red 49 in a range of from 20:1 to 0.5:1. Fluorescent orange toners and methods of making and using the fluorescent orange toners are also provided.

Abstract: A display panel and a method for fabricating the same are provided. The display panel includes a transistor layer. The transistor layer includes an oxide active layer and a first photocatalytic layer that are stacked. The first photocatalytic layer is made of a first material and a second material. A conduction band energy level of the first material is staggered from a conduction band energy level of the second material, or a valence band energy level of the first material is staggered from a valence band energy level of the second material. At least one of the conduction band energy level of the first material and the conduction band energy level of the second material is less than 0 eV.

Abstract: A method for adjusting a projection device and a projection system are provided. A projection device is driven to project an image on a projection target. An image-capturing device is driven to perform image capturing toward the projection target to obtain a captured image. The captured image includes a target object corresponding to the image. A projection position of the target object in the captured image is calculated based on the target object and the captured image. An output power of an illumination light source module of the projection device is adjusted based on the projection position and an ambient luminance.

Abstract: A composition containing recombinant collagen with repairing and soothing effects, eye cream containing the composition and preparation method thereof are provided. The composition contains the following raw materials in parts by weight: 1 to 10 parts of recombinant collagen, 1 to 10 parts of sodium hyaluronate, 1 to 5 parts of bifida ferment lysate, 1 to 15 parts of glucosylglycerol, 1 to 10 parts of bisabolol, 1 to 15 parts eight-treasure essence stock solution, and 1 to 15 parts of pink red plum rechecking essence. The composition features with good skin permeability, contributing to its significant effects on repairing skin barriers and relieving skin inflammation, as well as its advantages of low irritation and high safety. Thus, the composition is suitable for people with damaged eye skin and has good market application prospects.

Abstract: The present disclosure discloses a lamp, including a lamp body and a cover ring sleeved on an outer side of a bottom of the lamp body, the lamp body is rotatable relative to the cover ring; an outer side wall of the bottom of the lamp body is provided with a first limiting member extending horizontally, and the first limiting member is configured to limit a position of the lamp body in a vertical direction; the first limiting member is provided with a second limiting member protruded outwardly; and an inner side wall of the cover ring is provided with a third limiting member corresponding to the second limiting member; in a case that the lamp body is rotated relative to the cover ring, the second limiting member and the third limiting member are interfered with each other to prevent the lamp body from rotating unrestrictedly.

Abstract: The present invention discloses a extra thick hot rolled H section steel and a production method therefor. The extra thick hot rolled H section steel contains, by mass, the following chemical components: 0.04-0.11% of C, 0.10-0.40% of Si, 0.40-1.00% of Mn, 0.40-1.00% of Cr, 0.10-0.40% of Cu, 0.020-0.060% of Nb, 0.040-0.100% of V, 0.010-0.025% of Ti, 0.010-0.030% of Al, 0.0060-0.0120% of N, not more than 0.015% of P, not more than 0.005% of S, not more than 0.0060% of O, and the balance Fe and trace residual elements, wherein 0.090%?Nb+V+Ti?0.170%, 6.5?(V+Ti)/N?10.5, and 0.30%?CEV?0.48%. The extra thick hot rolled H section steel has a flange thickness of 90 mm-150 mm, has excellent comprehensive mechanical properties, and can well meet the needs for heavy supporting structural parts of high-rise buildings, large squares, bridge structures, etc.

Abstract: An application of a prokaryotic Argonaute protein with only a cleavage activity of a target ribonucleic acid (RNA) in RNA editing is provided. The Argonaute protein is derived from a mesophilic prokaryotes Verrucomimicrobia bacterium, and its amino acid sequence is shown in SEQ ID NO: 1 or a protein with high similarity to SEQ ID NO: 1 and the same function. This protein has binding activity to a single-stranded guide DNA and nuclease activity only to the target RNA complementarily paired with the single-stranded guide DNA. Therefore, the protein can be utilized for in vitro and in vivo targeted RNA editing, providing a new powerful tool for RNA editing.