Abstract: An MLC may include a plurality of leaves configured to shape a radiation field, and a plurality of driving assemblies each of which is configured to drive one of the plurality of leaves to a desired target position for shaping the radiation field. The driving assembly associated with a leaf may include a driving component configured to drive the leaf toward a desired first position with a speed exceeding a speed threshold; and a braking component configured to stop the leaf within a time period in response to a determination that the leaf arrives at the desired first position. In some embodiments, the time period of the braking component for stopping the leaf may be less than a time threshold.

Abstract: The invention provides an electrochemical discharge-assisted micro-grinding device for micro-components of brittle and hard materials. The device includes a micro-grinding tool, grinding fluid, a workpiece, an auxiliary electrode, a processing groove, and a pulsed DC power supply; the processing groove is filled with grinding fluid; the micro-grinding tool, the workpiece, and the auxiliary electrode are immersed in the grinding fluid; the micro-grinding tool is composed of a conductive grinding tool base, an electroplating layer, and insulated superabrasives. The micro-grinding tool is connected to the negative electrode of the pulsed DC power supply; the grinding fluid is composed of H2O2, Na2CO3, EDTA-Fe-Na, and deionized water; the workpiece material is brittle and hard; a large number of micro structures need to be produced on the surface of the workpiece.

Abstract: A barrier structure for bearing a high-energy impact and construction method thereof are provided. The barrier structure includes a supporting pile array arranged between two opposite mountain slope surfaces. The supporting pile array is arranged in a straight line and includes two or more supporting piles. The two or more supporting piles are fixed at a lower part of a mountain. A barrier net is connected to the two or more supporting piles. The barrier net passes through the supporting pile array and extends to the two opposite mountain slope surfaces. The barrier net is fixed on the two opposite mountain slope surfaces. Pull plates are disposed on the two opposite mountain slope surfaces, and one side of each of the pull plates is fixed to a corresponding slope surface of the two opposite mountain slope surfaces through reverse prestressed anchor cables.

Abstract: A speech synthesis method an includes: obtaining a target phoneme of a target user and a timbre identifier of the target user, the target phoneme being determined based on a target text; inputting the target phoneme into a first submodel of a speech synthesis model, to obtain a target phonetic posteriorgram of the target phoneme, the target phonetic posteriorgram reflecting features of phonemes in the target phoneme and pronunciation duration features of phonemes in the target phoneme; and inputting the target phonetic posteriorgram and the timbre identifier into a second submodel of the speech synthesis model, to obtain target speech corresponding to the target text and the timbre identifier, the second submodel being configured to predict the target phonetic posteriorgram and a predicted intermediate variable of the target speech, and the predicted intermediate variable reflecting a frequency domain feature of the target speech.

Abstract: A barrier structure for bearing a high-energy impact and construction method thereof are provided. The barrier structure includes a supporting pile array arranged between two opposite mountain slope surfaces. The supporting pile array is arranged in a straight line and includes two or more supporting piles. The two or more supporting piles are fixed at a lower part of a mountain. A barrier net is connected to the two or more supporting piles. The barrier net passes through the supporting pile array and extends to the two opposite mountain slope surfaces. The barrier net is fixed on the two opposite mountain slope surfaces. Pull plates are disposed on the two opposite mountain slope surfaces, and one side of each of the pull plates is fixed to a corresponding slope surface of the two opposite mountain slope surfaces through reverse prestressed anchor cables.

Abstract: A neckband earphone is provided, and a method, a system and a device for switching functions of the neckband earphone are provided. A key is provided on each of a left portion and a right portion of a neckband of the neckband earphone. The neckband is provided with a detector and a processor connected with the detector. The detector is configured to detect and determine a wearing orientation of the neckband earphone. The processor is configured to determine a function of the key on the left portion and a function of the key on the right portion based on the wearing orientation, to control key functions on a left side and a right side of a human body wearing the neckband earphone to remain unchanged for different wearing orientations.

Abstract: A plasma-facing component of a fusion reactor divertor, including an inner target transition support and a dome transition support which are integrated into an inner target-dome transition support. The inner target-dome transition support and an outer horizontal target transition support are each prepared from two materials. The channel connection inside the inner target-dome transition support and the outer horizontal target transition support is realized through an S-shaped flow channel and a collector box. In V-shaped regions of inner and outer targets, a plasma-facing unit is connected to the collector box in the transition support via a bending tube, and is communicated with a coolant flowing through horizontal and vertical targets through an intermediate flow channel in the transition block. A method of preparing the plasma-facing component is further provided.

Abstract: An optical fiber sensing system for temperature and salinity synchronous measurement is provided, which includes a broad-spectrum light source, an optical fiber circulator, a coupler, a first interferometer, a second interferometer, a third interferometer and a spectrometer; the first interferometer is insensitive to temperature and salinity; the second interferometer is sensitive to both temperature and salinity, and the third interferometer is only sensitive to temperature; light emitted by the broad-spectrum light source passes through the optical fiber circulator and enters the first interferometer; reflected light of the first interferometer passes through the optical fiber circulator and the coupler sequentially, and then enters the second and the third interferometers respectively; the reflected light of the second and the third interferometers enters the spectrometer after passing through the coupler; the temperature and the salinity to be measured are simultaneously obtained by performing spectral an

Abstract: A method and an apparatus for real-time analysis of the district heating network is disclosed. According to an embodiment of the present disclosure, a method for analyzing a district heating network including pipes and fluids inside the pipes includes receiving, by a processor, pipe data representing a structure of the pipes; receiving, by the processor, input data on at least one of the physical state of the district heating network and the flow of fluids; calculating, by the processor, data for at least one of the physical state of the district heating network or the flow of fluids using the pipe data and the input data.

Abstract: Disclosed are a method and device for evaluating damage caused by secondary stress to a vacuum vessel, a terminal device, and a medium, to perform following steps: obtaining secondary stress of a vacuum vessel that passes a primary-stress failure evaluation; obtaining structural damage parameters of the vacuum vessel when determining, based on evaluation parameters for the primary-stress failure evaluation of the vacuum vessel and the obtained secondary stress, that the vacuum vessel meets a precondition for a progressive deformation; and determining, based on the obtained structural damage parameters, whether the vacuum vessel meeting the precondition for the progressive deformation experiences structural damage due to the progressive deformation. In this way, a vacuum vessel of a nuclear fusion reactor can be evaluated based on damage caused by the secondary stress.

Abstract: Embodiments of 3D memory devices and methods for forming the same are disclosed. In an example, a 3D memory device includes a substrate, a memory stack, a channel structure, a channel local contact, a slit structure, and a staircase local contact. The memory stack includes interleaved conductive layers and dielectric layers above the substrate. The channel structure extends vertically through the memory stack. The channel local contact is above and in contact with the channel structure. The slit structure extends vertically through the memory stack. The staircase local contact is above and in contact with one of the conductive layers at a staircase structure on an edge of the memory stack. Upper ends of the channel local contact, the slit structure, and the staircase local contact are flush with one another.

Abstract: The present application relates to a welding positioning apparatus, wherein a press head may be capable of pressing a first component against the second component, and dust generated during welding may be allowed to be collected in a dust collection chamber, and discharged to the outside of the welding positioning apparatus by an external dust extractor to keep the welding environment clean, thereby improving the welding quality.

Abstract: Anti-IL-12/IL-23p40 antibodies, such as ustekinumab, are used in methods and compositions for safe and effective treatment of psoriasis, particularly moderate to severe chronic plaque psoriasis, in pediatric patients. The methods and compositions address a clear unmet medical need in this patient population.

Abstract: This application relates to a mark quality inspection method and apparatus, a computer device, and a storage medium. The method includes: acquiring a marked-product image obtained by photographing a marked product upon completion of a marking operation on a product; performing image identification on the marked-product image to obtain a mark quality identification result of an identification code in the marked-product image; and outputting a first indication signal under a condition that the mark quality identification result is normal, where the first indication signal is used to indicate that the marked product flows to a process subsequent to the marking operation. In embodiments of this application, mark quality problems can be found in a timely manner, reducing cases of undesirable mark quality and defectiveness of mass-produced products.

Abstract: A liquid crystal display device includes a first substrate, a second substrate facing the first substrate, a dual passivation layer disposed between the first substrate and the second substrate. The dual passivation layer includes a first passivation layer and a second passivation layer. A refractive index of the first passivation layer is different from a refractive index of the second passivation layer.

Abstract: A neckband headphone, a method, a system and a device for starting up a neckband headphone, as well as a computer readable storage medium are provided. The neckband headphone according to the present disclosure includes a neckband, a first earbud connected to an end of the neckband, a second earbud connected to another end of the neckband, a detector, and a processor connected to the detector. The detector is configured to acquire state information of the neckband headphone. The processor is configured to: determine whether the neckband headphone is worn based on the state information; control the neckband headphone to wake up when determining that the neckband headphone is worn, and control the neckband headphone to be in a low-power mode when determining that the neckband headphone is not worn.

Abstract: A liquid crystal display device includes a first substrate, a second substrate facing the first substrate, a dual passivation layer disposed between the first substrate and the second substrate. The dual passivation layer includes a first passivation layer and a second passivation layer. A refractive index of the first passivation layer is different from a refractive index of the second passivation layer.

Abstract: Provided are a method and apparatus for controlling video playing, an electronic device and a storage medium. The solution is as follows: in response to at least one video being playing or paused on a display screen, acquiring a current face image of a user in front of the display screen; parsing the current face image by using an augmented reality-based gaze tracking method to determine a current visual focus of the user on the display screen; and controlling, according to the current visual focus, the at least one video to continue playing or be paused on the display screen.

Abstract: A wavelength-tunable etalon includes a pair of substrates, each comprising a reflection layer, an electrode, and an alignment layer on opposing surfaces of the pair of substrates; a first seal line configured to seal liquid crystal between the pair of substrates; and a second seal line configured to divide a space in which the liquid crystal is sealed into a main liquid crystal accommodating space configured to pass laser and a sub-liquid crystal accommodating space provided external of the main liquid crystal accommodating space. The first seal line comprises a sub inlet configured to fluidly communicate the main liquid crystal accommodating space with the sub-liquid crystal accommodating space.

Abstract: A wavelength-tunable etalon includes a pair of substrates, each comprising a reflection layer, an electrode, and an alignment layer on opposing surfaces of the pair of substrates; a first seal line configured to seal liquid crystal between the pair of substrates; and a second seal line configured to divide a space in which the liquid crystal is sealed into a main liquid crystal accommodating space configured to pass laser and a sub-liquid crystal accommodating space provided external of the main liquid crystal accommodating space. The first seal line comprises a sub inlet configured to fluidly communicate the main liquid crystal accommodating space with the sub-liquid crystal accommodating space.