Abstract: Techniques for occlusion and collision detection in an AR session are described. In an example, a depth sensor is used to generate a depth image. Distortions in the depth image are reduced or eliminated by at least dividing the depth image into depth layers and moving depth pixels between the layers. An RGBD image is generated from the depth image, as updated, and an RGB image generated at substantially the same time as the depth image. Occlusion of a virtual object is detected based on the RGBD image. Further, a 3D model of the real-world environment is generated from the depth images, as updated, and includes multi-level voxels. Collision with the virtual object is detected based on the multi-level voxels. Rendering of the virtual object in an AR session is based on the occlusion and collision detection.

Abstract: Disclosed is a phase-locked loop circuit, including: a phase-locked loop, a locking detection circuit, an input end for inputting a reference clock signal, a first output end for outputting an oscillator clock signal, and a second output end for outputting a locking signal, wherein the phase-locked loop is configured to output the oscillator clock signal according to the reference clock signal and control the reference clock signal and the oscillator clock signal to be synchronous; and the locking detection circuit is configured to output the locking signal to the second output end when the oscillator clock signal and the reference clock signal are synchronous.

Abstract: This disclosure is directed to composites comprising a polymeric film coated on one or both sides with a MXene material, as well as lithium metal electrodes and components thereof, including MXene-polymer composite separators.

Abstract: The invention relates to a dynamic fracture width calculation method for drilling fluid loss in a fractured formation, which belongs to the field of loss control of drilling and well completion engineering, and includes the following steps: selecting a model according to seismic data and fracture development characteristics and calculating a static hydraulic width of a formation fracture; substituting the static hydraulic width of the formation fracture into a deformation formula of a fracture hydraulic width, to obtain a dynamic hydraulic width of a wellbore fracture; converting the dynamic hydraulic width of the wellbore fracture into an average mechanical width of the wellbore fracture, according to a conversion relational formula of a mechanical width; and solving a mechanical width distribution range of the fracture according to a standard deviation of a mechanical width distribution of a natural fracture.

Abstract: Described herein is a system with a first network element and a second network element. The first network element contains a processor configured to synchronize with the second network element; and maintain synchronization with the second network element. The first network element is a small cell eNB and the second network element is one of the following: a macro cell enhanced node-B (eNB); or a small cell eNB.

Abstract: Methods and apparatus to optimize ramp rates in combined cycle power plants are disclosed herein. An example method disclosed herein includes predicting a first setpoint for a gas turbine in a combined cycle power plant over a prediction horizon and predicting a second setpoint for a steam generator over the prediction horizon. The example method includes identifying a first steam property of steam generated by the steam generator in the combined cycle power plant based on the second setpoint. The example method includes comparing the first steam property to a second steam property of steam associated with a steam turbine in the combined cycle power plant and dynamically adjusting at least one of the first setpoint or the second setpoint based on the comparison.

Abstract: A smart meal ordering method comprises: conducting body sensing of a diner by a body sensing hardware of a smart meal ordering device; outputting a meal ordering interface by a display screen of a smart meal ordering device in response to sensing that the diner has taken a seat, and obtaining information of one or more dishes selected by the diner on the meal ordering interface; and in response to sensing that the diner has left the seat, sending a total price of the dishes and identification information of the smart meal ordering device to a server.

Abstract: Example storage control systems and methods are described. In one implementation, a storage drive controller includes a non-volatile memory subsystem that processes multiple commands. The storage drive controller also includes a controller memory buffer (CMB) memory management unit coupled to the non-volatile memory subsystem. The CMB memory management unit manages CMB-related tasks including caching and storage of data associated with the storage drive controller.

Abstract: The application discloses a method for knowledge extraction based on TextCNN, comprising: S10, collecting first training data, and constructing a character vector dictionary and a word vector dictionary; S20, constructing a first convolutional neural network, and training the first convolutional neural network based on a first optimization algorithm, the first convolutional neural network comprises a first embedding layer, a first multilayer convolution, and a first softmax function connected in turn; S30, constructing a second convolutional neural network, and training the second convolutional neural network based on a second optimization algorithm, the second convolutional neural network comprises a second embedding layer, a second multilayer convolution, a pooling layer, two fully-connected layers and a second softmax function, the second embedding layer connected in turn; S40, extracting a knowledge graph triple of the to-be-predicted data according to an entity tagging prediction output by the first trai

Abstract: The present disclosure discloses an indoor positioning method, an indoor positioning system, an indoor positioning apparatus and a computer readable medium. The indoor positioning method includes: determining an initial position of a target object using combination of wireless positioning and visual feature map matching positioning; and according to the initial position of the target object, performing real-time positioning on the target object using combination of short-time interframe feature matching positioning and the visual feature map matching positioning.

Abstract: A gaming machine provides a spinning reel game having a base game, from which a hold and spin feature game is triggered when a determined number of configurable symbols are displayed in a base game outcome. When the feature game is triggered, the configurable symbols are held in place on the display and the player is provided one or more spins during the feature game in which to collect additional configurable symbols. Any additional configurable symbols are retained on the display during subsequent spins until the feature game is completed. Each reel on the game display includes a respective multiplier meter that is adjusted when a multiplier symbol is displayed on the reel in a base game outcome. The multiplier symbols include dynamic multiplier symbols that increment the multiplier meters by a defined amount and static multiplier symbols that lock a meter at a defined multiplier value.

Abstract: An ultrathin, carbon-based memristor with a moiré superlattice potential shows prominent ferroelectric resistance switching. The memristor includes a bilayer material, such as Bernal-stacked bilayer graphene, encapsulated between two layers of a layered material, such as hexagonal boron nitride. At least one of the encapsulating layers is rotationally aligned with the bilayer to create the moiré superlattice potential. The memristor exhibits ultrafast and robust resistance switching between multiple resistance states at high temperatures. The memristor, which may be volatile or nonvolatile, may be suitable for neuromorphic computing.

Abstract: Provided are a method for detecting quantity of items and a vending machine. The vending machine includes: an item column configured to temporarily store items, where the item column includes an outlet; a shielding member configured to shield or open the outlet of the item column; and a driving device configured to drive the items in the item column to move toward the outlet of the item column. The method includes: controlling the shielding member to shield the outlet of the item column; driving the items in the item column to move until the items in the item column abut against each other; detecting a total length of all items in the item column; and calculating the quantity of items in the item column according to the total length of the all items and a length of a single item in the item column.

Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes processing circuitry. The processing circuitry is configured to decode prediction information of a block in a current picture from a coded video bitstream. The prediction information indicates an affine model in an inter prediction mode. The processing circuitry is configured to determine motion vectors of control points of the block according to the affine model. The processing circuitry is configured to determine a motion vector of a sub-block of the block from the determined motion vectors of the control points, one of a width and a height of the sub-block being less than 4. Further, the processing circuitry is configured to reconstruct at least a sample of the sub-block according to the determined motion vector.

Abstract: Disclosed is a method for preparing a benzofuran derivative. In particular, provided is a method for preparing a benzofuran derivative, wherein according to the method provided, reaction steps required to synthesize the benzofuran substance in the prior art can be effectively shortened.

Abstract: A system described herein may provide techniques for a geographically-based traffic handling policy. An originating device may mark traffic with geographic restriction information, such as in a header of network traffic, indicating a geographic restriction on the propagation of the traffic. The geographic restriction may indicate a geographic region in which the traffic may be forwarded, or a geographic region in which the traffic is prohibited from being forwarded. Network devices in a path between the originating device and a destination device may determine whether to drop the traffic or perform other policy-related actions based on whether such devices are inside the geographic region in which the traffic may be forwarded. In some implementations a destination device may register as an exception to such policies, based on which an originating device or a router may bypass geographically-based traffic handling policies with respect to marked traffic directed to the destination device.

Abstract: Disclosed herein are methods, devices, and apparatuses, including computer programs stored on computer-readable media, for storing and managing audio data. One of the methods includes: receiving a request to store audio data; associating the audio data with a spectrogram generated based on the audio data; storing the audio data and the spectrogram on a blockchain; and providing access to the audio data based on the spectrogram.

Abstract: A method and an apparatus are provided for obtaining a motion vector, and disclose application of the method and the apparatus for obtaining a motion vector in a video coding method and apparatus. The method includes: obtaining a first motion vector from a first motion vector set corresponding to a to-be-processed picture block; obtaining a second motion vector through calculation based on the first motion vector, where there is a preset vector difference between the first motion vector and the second motion vector, and the first motion vector and the second motion vector are different; adding the second motion vector to the first motion vector set to constitute a second motion vector set; and obtaining a target motion vector from the second motion vector set.