Abstract: There are provided methods, apparatuses, devices, and media for processing video based on contrastive learning. At least one first object and at least one second object are extracted from a first frame and a second frame in a training video in training data, respectively. For a first object in the at least one first object, at least one positive sample object and at least one negative sample object associated with the first object are selected from the at least one second object based on the training data. A contrastive model is generated based on the at least one positive sample object and the at least one negative sample object, the contrastive model describing an association relationship between an object in a frame in a video and a contrastive feature of the object. The contrastive feature distinguishes whether objects in respective frames represent the same object, thereby improving the accuracy.

Abstract: Provided in the present disclosure is a data transmission method in an uplink direction, including: receiving an uplink optical signal; generating, according to the uplink optical signal, second uplink electrical signals in a plurality of channels; and performing, according to an uplink granularity, channel alignment on the second uplink electrical signals in the plurality of channels for recovering and obtaining a target uplink signal after the alignment. Further disclosed is a data transmission method in a downlink direction, including: receiving a downlink optical signal; generating, according to the downlink optical signal, second downlink electrical signals in a plurality of channels; and performing, according to a downlink granularity, channel alignment on the second downlink electrical signals in the plurality of channels for recovering and obtaining a target downlink signal after the alignment. Also provided in the present disclosure are an OLT, an ONU, and a computer-readable medium.

Abstract: A head-mounted device may have a head-mounted housing that is configured to be worn on a head of a user. While the head-mounted device is being worn, left and right displays in optical modules in the head-mounted device may provide images to eye boxes located rearward of the head-mounted device. A forward-facing publicly viewable display on a front portion of the head-mounted device may be covered with a transparent housing portion forming a display cover layer. Millimeter wave antennas may be mounted under a dielectric member that is interposed between the antennas and an edge portion of the transparent housing portion. The antennas may have planar outer surfaces. The dielectric member may have a planar surface separated from the planar outer surfaces by air gaps and a curved outer surface.

Abstract: An electronic device may have first and second rear-facing displays, a front-facing display, a cover at a front side overlapping the front-facing display, and an antenna that radiates through the cover. The cover may have a three-dimensional curvature. The device may have an inner chassis and an outer chassis. The antenna may include a radiating element and a ground trace on a flexible printed circuit. To maximize wireless performance of the antenna, the ground trace may be electrically coupled to as much conductive material in the vicinity of the antenna as possible. For example, the ground trace may be grounded to conductive structures in the front-facing display via a conductive cavity for the antenna, may be grounded directly to the outer chassis using conductive screws, and/or may be grounded directly to the inner chassis using conductive screws.

Abstract: An electronic device may have first and second rear-facing displays, a front-facing display, a cover at a front side overlapping the front-facing display, and an antenna that radiates through the cover. The antenna may be formed from sheet metal. The antenna may have a resonating element formed from a first portion of the sheet metal and an antenna ground that includes a second portion of the sheet metal separated from the first portion by a cavity. A third portion of the sheet metal may couple the first portion to the second portion and may be folded around the cavity to produce a spring force that presses the first portion against the cover. The first portion and the cover may have the same compound curvature. The second portion may form a conductive cavity for the antenna.

Abstract: Embodiments of the disclosure provide a method, an apparatus, a device, a storage medium, and a program product for visual generation. The method includes: generating first visual content matching the text information at a first resolution by using a trained first content generation model and based on text information; performing up-sampling for the first visual content having the first resolution to obtain up-sampled first visual content having a second resolution, where the first resolution is lower than the second resolution; and generating second visual content matching the text information at the second resolution by using a trained second content generation model and based on the up-sampled first visual content and the text information.

Abstract: Embodiments in the disclosure provide a method, apparatus, device, storage medium, and program product for feature determination. The method includes: determining, using a visual encoder, a visual feature representation of an image, the visual feature representation having a first dimension; dividing the visual feature representation into a plurality of sub-feature representations by dimension; for each of the plurality of sub-feature representations, determining, from a codebook of a plurality of codebooks that corresponds to the sub-feature representation, a quantized feature representation that matches the sub-feature representation, each codebook including a plurality of quantized feature representations; and determining a quantized visual feature representation of the image by concatenating a plurality of quantized feature representations respectively corresponding to the plurality of sub-feature representations, the quantized visual feature representation having the first dimension.

Abstract: The present application discloses a data processing method and apparatus, device, medium and product, where the method includes: acquiring a target image, a semantic-level feature of the target image, a pixel-level feature of the target image, a semantic-level codebook, and a pixel-level codebook, where a plurality of indices are shared between the semantic-level codebook and the pixel-level codebook, and different indices indicate different entries in the same codebook; summing, for any of the indices, a distance between an entry indicated by the index in the semantic-level codebook and the semantic-level feature and a distance between an entry indicated by the index in the pixel-level codebook and the pixel-level feature to obtain a distance sum corresponding to the index; and comparing the distance sums corresponding to the indices to obtain a minimum value, and determining an indexed result of the target image according to an index corresponding to the minimum value.

Abstract: A spoil-based lightweight porous backfill for purifying waste gas and wastewater and a method of use thereof are disclosed. The spoil-based lightweight porous backfill is formed with a plurality of interconnected pores, and the pores are loaded with a purification material. The purification material can purify wastewater and/or waste gas passing through the pores. Compared to traditional closed-cell porous backfills, the spoil-based lightweight porous backfill of the present technical solution is of an open-cell type, possessing strong adsorption capacity. After being loaded with the purification material, it can serve as a multifunctional purification body to provide a purification function for treating low-concentration wastewater and waste gas, thereby realizing an environmental purification function on the basis of providing a backfilling function.

Abstract: The present application discloses an image generation method and apparatus, a device, a medium and a product. The method includes a process of predicting a token sequence under a plurality of scales, and the process of predicting a token sequence under each scale is obtained through multiple rounds of sampling prediction, so as to realize a later round of sampling prediction on the basis of a result obtained from an earlier round of sampling prediction under the same scale so that the later round of sampling prediction may acquire an associated relationship between different local areas (for example, different local areas represented by different tokens) from the result.

Abstract: Embodiments of the disclosure provide a method, an apparatus, a device, a storage medium, and a program product for image generation. The method includes: generating a feature embedding by a trained machine learning model and based on at least a text prompt for image generation; determining by a trained classifier model, at least one visual feature unit from a visual feature codebook to form a visual feature map matching the feature embedding, determining, by each classifier in the classifier model, a value of one bit position in the bit sequence respectively, and obtaining the visual feature unit from the visual feature codebook based on the determined value of the respective bit position in the bit sequence; and generating a predicted image matching the text prompt based on the visual feature map.

Abstract: A method includes: determining, in response to obtaining description information related to visual content generation, position information of a respective text unit in the description information based on a specified visual category, the specified visual category indicating a video category or an image category, the position information including at least one of spatial position information or temporal position information; generating a visual feature map matching the description information by using a trained content generation model and based on text encoding representation and the position information of the respective text unit in the description information; and generating visual content matching the specified visual category by using a trained decoder model and based on the visual feature map, the decoder model being trained to decode an image from a visual feature map corresponding to the image and to decode a video from a visual feature map corresponding to the video.

Abstract: A mobile network selection method, device, mobile user equipment and a storage medium are provided. The method includes when a mobile user equipment supporting a Closed Access Group CAG function automatically selects a mobile network, determining, by a Non-Access Stratum NAS function of the mobile user equipment according to information in a Universal Subscriber Identity Module USIM of the mobile user equipment, whether to allow the mobile user equipment to access a CAG cell of a Public Land Mobile Network PLMN; when the mobile user equipment receives a broadcast message of a CAG cell and the mobile user equipment is allowed to access the CAG cell of the PLMN, selecting, by the NAS function, a mobile network corresponding to a PLMN identifier indicated in the broadcast message of the CAG cell.

Abstract: An electronic device may include a phased antenna array. The array may include co-located first and second antennas formed on a dielectric substrate. The first antenna may include a first patch element and multi-layer parasitic structures. The multi-layer parasitic structures may include a first set of co-planar parasitic elements. The first set of parasitic elements may overlap the first patch element and may be separated by a gap. The multi-layer parasitic structures may include an additional parasitic element that overlaps the gap. The second antenna may include a second patch element that is co-planar with the additional parasitic patch. The second patch element may at least partially overlap one of the parasitic elements in the first set. The first and second patch antennas may collectively cover first and second frequency bands while occupying a minimal amount of space on the dielectric substrate.

Abstract: A test structure includes a plurality of word lines and a plurality of bit lines. A vertical gate-all-around (VGAA) transistor is formed at the intersection of each word line and each bit line. The test structure includes a first area and a second area. The second area is arranged outside the first area, the word lines in the first area and the word lines in the second area are disconnected, and the bit lines in the first area and the bit lines in the second area are disconnected. The plurality of VGAA transistors located in the first area form a test array, and a VGAA transistor located in the middle of the test array is a device to be tested.

Abstract: A semiconductor structure and a manufacturing method thereof, and an electronic device are provided. The semiconductor structure includes: an active pillar extending along a vertical direction; a word line extending along a first horizontal direction and coupled to the active pillar; and a bit line extending along a second horizontal direction and coupled to the active pillar. The word line includes a first gate part and a second gate part that cover a side wall of the active pillar and are connected, the first gate part is located on at least one side of the active pillar in the first horizontal direction, the second gate part is located on at least one side of the active pillar in the second horizontal direction, and an average size of the first gate part in the vertical direction is different from an average size of the second gate part in the vertical direction.

Abstract: A head-mounted device may have a head-mounted housing that is configured to be worn on a head of a user. While the head-mounted device is being worn, optical modules in the head-mounted device may provide images to eye boxes located rearward of the head-mounted device. A forward-facing display on a front portion of the head-mounted device may be covered with a transparent housing portion forming a display cover layer. An antenna may be mounted in the device. A curved portion of the display cover layer or other dielectric housing layer may overlap the antenna. The antenna and/or other components may be formed by contouring a flexible printed circuit into a shape characterized by a surface with compound curvature. The contoured flexible printed circuit may have polymer layers and a metal trace between the polymer layers. A neutral stress plane may be aligned with the metal trace.

Abstract: Provided is a semiconductor structure, a test structure, a manufacturing method and a test method. The semiconductor structure includes a substrate, which includes multiple pillars spaced along a first direction by first trenches; second trenches formed at opposite sides along a second direction of each of the pillars; target conductive structures extending along the second direction in the substrate directly below adjacent second trenches; and a first dielectric layer, a conductive layer and a second dielectric layer sequentially stacked in the first trenches and the second trenches. A depth of the first trenches is greater than that of the second trenches. The first direction intersects the second direction.

Abstract: A semiconductor structure and a method for forming a semiconductor structure are provided. The semiconductor structure includes: a substrate, multiple active pillars located in the substrate, and multiple word lines. The multiple active pillars are arranged in an array in a first direction and a second direction. The first direction and the second direction are both directions parallel to a top surface of the substrate, and the first direction and the second direction intersect. The multiple word lines are spaced apart in the first direction. Each of the word lines extends in the second direction and continuously surrounds and covers a portion of a side wall of each of the multiple active pillars arranged in the second direction. Any two adjacent word lines are at least partially staggered in a direction perpendicular to the top surface of the substrate.

Abstract: An electrochemical biosensor electrode includes a substrate; a base layer adjacent to the substrate, the base layer including an inert, non-noble metal; and a top layer adjacent to the base layer, the top layer including a noble metal, wherein the top layer has a thickness of not greater than 15 nanometers (nm).