Abstract: The invention provides a beam optical axis self-stabilizing device and method based on reflection mechanical modulation. The device includes a polarized beam splitter, a quarter-wave plate, a structural reflecting element, and a driving source. The quarter-wave plate is located at an output end of the polarized beam splitter. The reflecting element is located at a side of the quarter-wave plate away from the polarized beam splitter. The driving source drives the structural reflecting element to rotate at a uniform speed with an optical axis as an axis. Incident light passes through the polarized beam splitter to obtain split light. The split light passes through the quarter-wave plate to enter the structural reflecting element. The structural reflecting element rotates so that the phase of reflected light varies with time. The reflected light is modulated by the quarter-wave plate and emitted through the polarized beam splitter, and a target beam is obtained.

Abstract: A socket device (e.g., a charging device) comprising a housing, a movable cover coupled to the housing between a use position and a stowed position. The movable cover in the use position extends, at least partially, beyond the housing. The socket device further comprises jacks disposed in the housing or the movable cover. The jacks match pins of a plug device. The socket device further comprises a drive assembly disposed in the housing and connected to the movable cover, and configured to: move the movable cover from the stowed position to the use position in response to an insertion of the plug device, and move the movable cover from the use position to the stowed position in response to unplugging the plug device.

Abstract: An installation support compatible with multiple installation modes, comprising a pole holding member (1), a pole-holding and wall-hanging integrated member (2), and a hanging member (3) that is detachably fixed to outdoor equipment. The hanging member (3) is detachably hung on the pole-holding and wall-hanging integrated member (2). The pole-holding and wall-hanging integrated member (2) can be independently and detachably installed on a wall body, or is enclosed with the pole holding member (1) to tightly hold a holding pole and is detachably fixed to the pole holding member (1), such that wall-hanging installation and pole-holding installation can be realized, the cost is lowered, and moreover, the field layout is simplified.

Abstract: Methods and apparatuses of encoding a video stream encoded using video point cloud coding include obtaining a source point cloud; generating an occupancy map including one or more pixels based on the source point cloud, an occupancy value associated with each pixel being a non-binary value; encoding the occupancy map to generate an encoded occupancy map, wherein a block of the encoded occupancy map corresponds to the one or more pixels of the occupancy map; selecting an occupancy value of the block based on the one or more pixels; and generating an encoded video stream based on the selected occupancy value.

Abstract: A method and apparatus comprising computer code configured to cause a processor or processors to obtain volumetric data of at least one three-dimensional (3D) visual content, derive a mesh from a frame of the volumetric data, the mesh including a plurality of base mesh vertices, determine a displacement of at least one vertex, that is not of the base mesh vertices, based on a series of projections from at least one of the plurality of base mesh vertices that is a neighboring one of the plurality of base mesh vertices to the at least one vertex, predicting the at least one vertex based at least on the determined displacement, and encode the volumetric data based on the predicted at least one vertex.

Abstract: Methods for simplified, rapid gel electrophoresis size-purification and downstream sequencing of an Oligo Library, for example an miRNA Library, based on co-purifying a DNA ladder molecular weight standard customized to co-migrate with Library to provide highly salient bands on the gel at the upper and lower ends of the Library size range, permitting precise cutting and avoiding the negative effects of gel distortion, variation of DNA migration rate in different lanes, and the difficulty of matching sample to ladder across a large distance. The methods may be applied to increase yield and purity in an Oligo Library of low-quality or low input Oligo, and in particular in small RNA samples.

Abstract: A method and apparatus for coding information of a point cloud may be performed by at least one processor and comprises: obtaining the point cloud including a set of points in a three-dimensional space; partitioning the point cloud into a tree structure comprising a plurality of nodes at different depths; encoding geometry information of the nodes; and encoding attribute information of the nodes before the entire point cloud is partitioned.

Abstract: A method and system for detecting a leakage target by integrating temporal information. The method comprises: acquiring multiple frames of images of a target position, and arranging the multiple frames of images based on temporal information corresponding to the multiple frames of images to obtain a target image sequence; merging, in a channel dimension, the multiple frames of images in the target image sequence to obtain a multi-dimensional tensor; performing convolution processing on the multi-dimensional tensor to obtain a first output result, wherein the first output result is used for representing a frame difference between every two adjacent ones of the multiple frames of images; calculating an accumulated frame difference corresponding to the multiple frames of images based on the first output result; and inputting the accumulated frame difference to a trained target detection model as input data to obtain a second output result integrated with the temporal information.

Abstract: An optical computing device and a computing method are provided for an optical Ising machine with high operation efficiency. The optical computing device includes a first spin array, an optical feedback network, and a second spin array, where the optical feedback network is separately connected to the first spin array and the second spin array. The first spin array may receive a first group of signals including N optical pulses or N electrical signals, and generate a first group of spin signals including N spin signals. The optical feedback network may receive the first group of spin signals, and generate, based on the first group of spin signals and specified first data, a first group of feedback signals including N feedback signals. The first spin array and the second spin array may process a plurality of signals in parallel, to improve computation efficiency of the optical computing device.

Abstract: This application provides an optical chip. The optical chip includes an optical substrate, and a first functional layer, a first space layer, and a second functional layer that are sequentially disposed on the optical substrate. A second optical structure is formed at the second functional layer. The second optical structure includes a second inter-layer coupling structure and a second intra-layer transmission structure, and the second intra-layer transmission structure is located in a first area of the second functional layer. A first optical structure located in a second area is formed at the first functional layer. The first optical structure includes a first inter-layer coupling structure and a first intra-layer transmission structure, and a projection of the second area in a normal direction of a plane of the optical substrate does not overlap with a projection of the first area in the normal direction of the plane of the optical substrate.

Abstract: An intensification mechanism analysis and anthropogenic climate change signal identification method for terrestrial water cycle (TWC) in dry and wet regions, includes: identifying dry regions and wet regions worldwide with observed data; quantifying a precipitation increasing rate; calculating a regional warming rate and a precipitation response warming rate, and investigating a difference between dry regions and wet regions; identifying a fingerprint pattern of a precipitation increase in dry regions and wet regions in response to global warming, and calculating a signal-to-noise ratio (SNR) to quantify a possibility of an anthropogenic climate change signal in dry regions and wet regions; and detecting different external forcing signals in a precipitation change of dry regions and wet regions with an optimal fingerprinting method, and quantifying a contribution of each of the different external forcing signals to the precipitation change.

Abstract: A method, computer program, and computer system is provided for decoding point cloud data. Data corresponding to a point cloud is received. A number of contexts associated with the received data is reduced based on reducing a size of an array corresponding to syntax elements for predictive tree-based coding of the point cloud. The data corresponding to the point cloud is decoded based on the reduced number of contexts.

Abstract: The present invention provides an online interactive uninterruptible power supply and method for control thereof. The online interactive uninterruptible power supply includes: an automatic voltage regulator and a changeover switch which are sequentially connected between an AC input and an AC output; a rectifying circuit, an input of the rectifying circuit being connected to the AC input; a charger, an input of the charger being connected to an output of the rectifying circuit and an output of the charger being configured for connection to a rechargeable battery; a DC-DC converter, an input of the DC-DC converter being connected to the rechargeable battery; and a first inverter, an input of the first inverter being connected to an output of the DC-DC converter. The changeover switch is configured to controllably connect the AC output to one of the automatic voltage regulator and an output of the first inverter.

Abstract: In a method for point cloud processing, a bitstream corresponding to a sequence of coded point cloud frames is received. Whether an implicit geometry partition is enabled for the sequence of coded point cloud frames is determined. An octree representing a geometry of points in a bounding box in a coded point cloud frame in the sequence of coded point cloud frames is reconstructed based on whether the implicit geometry partition is determined to be enabled for the sequence of coded point cloud frames.

Abstract: A base station associated with user devices in a wireless network includes a plurality of base stations. The base station includes a processor and a memory including instructions that, when executed by the processor, cause the base station to function as an actor network configured to determine a current transmit power, a critic network configured to evaluate a quality function of previous transmit powers of the base station based on local observations and previous transmit powers of neighboring base stations, and a decentralized training unit configured to train the quality function over the neighboring base stations. The neighboring base stations are a subset of the plurality of base stations, and the current transmit power is determined based on the previous transmit powers of the base station, direct channel gains between the base station and the user devices, and interference measures from the user devices.

Abstract: This disclosure relates to methods and systems for encoding or decoding a 3D mesh with predictive coding of boundary geometry information. The example decoding method includes receiving a coded bitstream comprising a geometry patch for a three-dimension mesh; extracting, from the coded bitstream, a reconstructed geometry image for the geometry patch comprising a set of points corresponding to a set of geometry coordinates for a boundary vertex in the three-dimension mesh; deriving based on the set of the geometry coordinates, a 3D geometry coordinate for the boundary vertex; obtaining a prediction residue for the boundary vertex; and reconstructing, by the device, geometry information of the boundary vertex based on the derived 3D geometry coordinate and the prediction residue.

Abstract: An apparatus for point cloud coding, includes processing circuitry that receives a coded bitstream for a point cloud. The coded bitstream includes encoded data for nodes in an octree structure for the point cloud corresponding to three dimensional (3D) partitions of a space of the point cloud, node sizes of the nodes being associated with sizes of the corresponding 3D partitions of the nodes. The processing circuitry decodes, from the coded bitstream, a first set of occupancy codes for a first set of nodes in the nodes using a first coding order and a second set of occupancy codes for a second set of nodes in the nodes using a second coding order that is different from the first coding order. Further, the processing circuitry reconstructs the octree structure based on at least the first set of occupancy codes and the second set of occupancy codes.

Abstract: In a method of processing UV coordinates of a three-dimensional (3D) mesh, the UV coordinates of the 3D mesh are received. The UV coordinates are two-dimensional (2D) texture coordinates that include U coordinates in a first axis and V coordinates in a second axis, and are mapped with vertices of the 3D mesh. The UV coordinates of the 3D mesh are processed based on at least one of a quantization process, a separation process, and a transformation process. The quantization process is configured to convert the UV coordinates into a plurality of indicators. The separation process is configured to separate the UV coordinates into the U coordinates and the V coordinates respectively. The transformation process is configured to convert the UV coordinates from a spatial domain into a transform domain. Compression is performed on the processed UV coordinates after the processing of the UV coordinates.

Abstract: A power detector device includes a voltage generator circuit, a reference circuit, a level hold circuit and a comparator circuit. The voltage generator circuit generates a bias voltage and a detection voltage according to a power supply voltage. The reference circuit generates a first reference voltage according to the power supply voltage. The level hold circuit selectively transmits the first reference voltage to a node according to the bias voltage, outputs a second reference voltage via the node, and holds a level of the second reference voltage after stopping transmitting the first reference voltage to the node. The comparator circuit compares the second reference voltage with the detection voltage to generate a power detection signal.

Abstract: Aspects of the disclosure provide methods and apparatuses for mesh coding (encoding and/or decoding). In some examples, an apparatus for coding mesh includes processing circuitry. The processing circuitry decodes, using a point cloud compression (PCC) decoder and from a bitstream, a point cloud that includes first points corresponding to vertices in a three dimensional (3D) mesh frame. The 3D mesh frame represents a surface of an object with polygons. The processing circuitry decodes, from the bitstream, first connectivity information of the 3D mesh frame. The first connectivity information has been signaled in the bitstream. The processing circuitry infers, second connectivity information of the 3D mesh frame, from the first points of the point cloud. The second connectivity information is not signaled in the bitstream. The processing circuitry reconstructs the 3D mesh frame based on the point cloud, the first connectivity information and the second connectivity information.