Abstract: Aspects of the present disclosure relate to a providing related content recommendations in response to a user search query by supervising the training of pair embeddings using contrastive learning and pairwise co-click signals. The approach combines a two tower model architecture with a cascaded multilayer perceptron model to enable the adoption of variable combinations of input features and more representative learned pair embeddings. The learned embeddings undergo supervised contrastive loss training to generate a related content recommendation model, which is subsequently evaluated using both online and offline metrics. The related content recommendation model can provide results to search queries that improve recommendation quality and increase user engagement, thereby ultimately enhancing long term user experience.

Abstract: An N-phase electric machine, N being an integer ?3, includes a housing; i×N stator windings arranged in a fixed manner in the housing, i being an integer ?2; and a rotatable rotor surrounded by the i×N stator windings in the housing. The stator windings are consecutively divided into i subgroups in a circumferential direction, each subgroup having N stator windings. The electric machine further comprises i current control modules and i temperature measurement devices, each current control module being correspondingly electrically connected to the N stator windings in one corresponding subgroup, so that when the stator windings in the i subgroups are supplied with power by the i current control modules, a rotating magnetic field is generated around the rotor. Each temperature measurement device is configured to measure the temperature of one corresponding subgroup in the i subgroups during operation of the electric machine.

Abstract: A camera optical lens includes five-piece lenses, from an object side to an image side, the five-piece lenses are: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens, a fourth lens having a negative refractive power and a fifth lens having a positive refractive power. The camera optical lens satisfies conditions of 0.60?f1/f?0.90, 1.80?d6/d8?3.20, 0.55?f2/f4?1.00, and 5.50?f5/f?10.00. Here f denotes a focal length of the camera optical lens, d6 denotes an on-axis distance from an image-side surface of the third lens to an object-side surface of the fourth lens, and d8 denotes an on-axis distance from an image-side surface of the fourth lens to an object-side surface of the fifth lens. The camera optical lens of the present disclosure has excellent optical performances, and meanwhile can meet design requirements of a large aperture, a wide angle and ultra-thin.

Abstract: An end cover assembly applied to a battery cell includes an end cover provided with an electrode lead-out hole and including a first mating portion provided at a side, facing inside of the battery cell, of the end cover, an electrode terminal disposed at the end cover and covering the electrode lead-out hole, and a connecting member configured to electrically connect the electrode terminal and an electrode assembly of the battery cell. The connecting member includes a second mating portion configured to be mated with the first mating portion to provide deformation resistance of the connecting member along a radial direction of the electrode lead-out hole.

Abstract: The disclosure relates to an armrest assembly and a vehicle having the armrest assembly. The armrest assembly is configured to be capable of holding a cup. The armrest assembly includes: an armrest body, wherein a cavity and an opening communicating with the cavity are arranged in the armrest body; a headrest, wherein the headrest is rotatably fixed to an end portion of the armrest body close to the opening, and a cup receptacle capable of receiving the cup is arranged on the back of the headrest; and a cup holder mechanism, wherein the cup holder mechanism has a cup holder arranged in the cavity, and the cup holder is ejectable from the opening to hold the cup. With the armrest assembly in the vehicle of the disclosure, the depth at which the cup is held can be increased, the holding effect can be improved, and the comfort and safety of the headrest can be ensured.

Abstract: The present invention relates to a reactive polyurethane prepolymer composition, which can be used as a hot melt adhesive, comprising a first polyurethane prepolymer which is the reaction product of the reaction of methylene diphenyl diisocyanate (MDI) with poly(1,6-hexamethylene adipate) glycol (PHAG) with a molecular weight (Mw) of 500 g/mol to 10,000 g/mol and with an NCO content of 0.5 wt % to 7 wt %, preferably of 3 wt % to 7 wt % and more preferably of 5 wt % to 7 wt %, comprising less than 0.1 wt % free MDI monomer based on the total weight of the first polyurethane prepolymer, a second polyurethane prepolymer which is the reaction product of the reaction of methylene diphenyl diisocyanate with polypropylene glycol (PPG) or a succinic acid based polyester polyol with a molecular weight (Mw) of 250 g/mol to 4,000 g/mol and with an NCO content of 0.5 wt % to 12 wt %, preferably of 3 wt % to 11 wt % and more preferably of 5 wt % to 10 wt %, comprising less than 0.

Abstract: The laminator includes a rack, at least a pair of a first roller and a second roller jointly providing extrusion to a film that passes between the first and second rollers, and at least one film jamming prevention device provided downstream from the first and second rollers along an extrusion direction. Each of the first and second rollers has two ends respectively and rotably mounted on the rack, and both first and second rollers are configured circumferentially with a number of annular slots at intervals. The at least one film jamming prevention device includes a base piece and a number of blades configured at intervals along a side of the base piece, and each blade protrudes from the base piece into an annular slot. The laminator, as described, is capable of preventing film jamming from happening, rather than resolving jamming after it occurs.

Abstract: A display circuit of a special-shaped screen and a display device. The display circuit includes multiple pixel circuits arranged in a special-shaped region of the special-shaped screen in a manner of a non-rectangular array; pixel circuits located at both ends of each row of the plurality of pixel circuits being edge pixel circuits, one of two adjacent edge pixel circuits being connected to a Nth level gate signal line, the other one of the two adjacent edge pixel circuits being connected to a (N+1)th level gate signal line, and N is a natural number greater than 0; a voltage-dividing circuit connected to each of the two adjacent edge pixel circuits, to enable the two adjacent edge pixel circuits to have equal storage voltages, a control end of the voltage-dividing circuit being connected to a (N+M)th level gate signal line, and M being a natural number greater than 2.

Abstract: A panel includes a substrate, an array layer and an electrode array layer. The array layer is on a side of the substrate; the electrode array layer is on a side of the array layer away from the substrate; and the array layer includes an active layer, a gate metal layer and a source/drain metal layer. The substrate includes drive units arranged in an array, scan line groups, data lines extending in a second direction; and common signal lines extending in the second direction. The scan line group includes first scan lines and second scan lines, extending in a first direction. The first direction is perpendicular with the second direction. The electrode array layer includes drive electrodes arranged in an array; the drive electrodes correspond to the drive units; and the drive unit includes a first transistor, a second transistor, a third transistor, a first capacitor and a second capacitor.

Abstract: A method and a device for detecting plastic foreign objects with low chromaticity difference in shredded tobacco through online pulse spectral imaging are provided. The method includes three steps: negative pressure thin-layer loading of shredded tobacco, pulse line-scanning identification of shredded tobacco, and positive pressure online elimination of foreign objects. Loose shredded tobacco is formed into a fixed and continuous thin layer on a surface of a conveying cylinder under the effect of a negative pressure adsorption force. The surface of the conveying cylinder is coded by areas. An LED linear array light source containing characteristic wavelengths of plastics with low chromaticity difference emits optical pulses, and a line-scanning camera is used to obtain characteristic signals of the plastic foreign objects with low chromaticity difference efficiently in real time.

Abstract: A two-step door opening mechanism for an oven is provided. The mechanism includes first and second buttons, arranged side-by-side on a front panel of the oven, the oven defining an oven cavity openable and closable by an oven door, the first and second buttons being separately actuatable one after the other for providing two distinct actions to be performed to open the oven door. The first button, once actuated, is operable to unlock the second button, and the second button, once actuated, is operable to open the door when the second button is unlocked.

Abstract: The present disclosure belongs to the field of immune technology, and particularly discloses a SARS-CoV-2 RBD-specific monoclonal antibody including a heavy chain having an amino acid sequence set forth in SEQ ID NO: 1 and a light chain having an amino acid sequence set forth in SEQ ID NO: 2. The present disclosure further discloses a linear epitope of the SARS-CoV-2 RBD-specific monoclonal antibody having an amino acid sequence set forth in SEQ ID NO: 3. The SARS-CoV-2 RBD-specific monoclonal antibody and the linear epitope thereof of the present disclosure are critical for research and development of vaccines and micromolecule drugs, diagnosis, prevention and treatment of COVID-19.

Abstract: Methods for resistance welding, resistance-welded assemblies, and vehicles including resistance-welded assemblies are provided. The method includes providing a workpiece stack-up including first and second workpieces and an intermediate material located between the faying surfaces thereof. At least one of the first workpiece and the second workpiece is formed of a first metal alloy with a first concentration of an alloying element, and the intermediate material is formed of a second metal alloy of the first metal and a second concentration of the alloying element that is less than the first concentration. The method includes bringing electrodes into contact with the workpieces, passing an electrical current therebetween to form a molten weld pool, and cooling the molten weld pool into a weld nugget that forms all or part of a weld joint between the workpieces and has a composition that is a mixture of the workpieces and the intermediate material.

Abstract: In at least one embodiment, an active noise cancellation system. The system includes a first controller, a data bus, and a second controller. The first controller receives first information from a plurality of noise sensing devices and second information from an audio system. The first controller employs a time division multiplexing scheme to generate a multiplexed stream of data including the first information and the second information. The data bus transmits the multiplexed stream of data on a single data channel. The second controller receives the multiplexed stream of data on the single data channel and separates the first information from the second information on the multiplexed stream of data to perform ANC functionality.

Abstract: Provided are an antenna, a phase shifter, and a communication device. The antenna includes a first metal electrode, a second metal electrode, and a photo-sensitive layer. The first metal electrode and the second metal electrode are respectively located on two opposite sides of the photo-sensitive layer. The first metal electrode includes multiple transmission electrodes. The multiple transmission electrodes are configured to transmit electrical signals. The photo-sensitive layer includes at least one photo-sensitive unit and the at least one photo-sensitive unit overlaps the transmission electrodes. The antenna provides more possibilities for large-scale commercialization.

Abstract: An acousto-optic leakage monitoring system for main steam pipeline in nuclear power plant. The system includes an acoustic emission leakage monitoring loop and a spectrum leakage monitoring loop, wherein the signal input ends of the acoustic emission leakage monitoring loop and the signal input ends of the spectrum leakage monitoring loop are respectively arranged at detection points of the main steam pipeline. The signal output ends of the acoustic emission leakage monitoring loop and the signal output ends of the spectrum leakage monitoring loop are communicatively connected to each other through a network switch, and the network switch is sequentially connected with a control unit and a display unit.

Abstract: Provided are a conductive plating apparatus, a plating system and a plating method for a conductive film. The conductive plating apparatus is configured to electrically connect the conductive film with a power supply. A first conductive structure includes a first conductive roller and a first press roller. A second conductive structure includes a second conductive roller and a second press roller. The first and second conductive structures are configured to allow the conductive film to sequentially pass between the first conductive roller and the first press roller and between the second the conductive roller and the second press roller. The first and second press rollers are configured to be brought into contact with and apply pressures to two opposite surfaces of the conductive film, respectively, and to be equipotential. The second press roller and the first conductive roller are configured to be equipotential.

Abstract: Provided are high affinity Mycobacterium tuberculosis capsule-specific antibodies and fragments thereof, as well as methods of use and devices employing such antibodies and/or fragments.