Abstract: A double-mirror focusing inside-beam powder-feeding laser-cladding device includes: first and second reflection beam splitters, a focusing lens, a vertical piping powder feeding device, and a collimated lens group. The first reflection beam splitter is disposed at a side of the collimated lens group; the second reflection beam splitter is disposed outside the first reflection beam splitter; the focusing lens is disposed at a side of the second reflection beam splitter facing away the collimated lens group; and the vertical piping powder feeding device is disposed at a side of the first reflection beam splitter facing away the collimated lens group. When the device is in use, a collimated beam is formed through the collimated lens group, and then reflected by the first and second reflection beam splitters to form an annular laser beam that can be focused by the focusing lens to form a light spot.

Abstract: Examples described herein relate to processing packets. In some examples, based on receipt of a Hypertext Transfer Protocol (HTTP) packet at a network interface device, the HTTP packet comprising an HTTP body and HTTP header: provide the HTTP header, but not the HTTP body, for processing in user space; modify solely the HTTP header in user space; and in kernel space, combine the modified HTTP header and the HTTP body prior to transmission of the HTTP packet with modified HTTP header to a client.

Abstract: In a pipelined analog-to-digital converter, at least one pipeline stage includes an N-bit sub-analog-to-digital conversion module, a first sub-digital-to-analog conversion module, a second sub-digital-to-analog conversion module, and a switched capacitor amplification module. The first sub-digital-to-analog conversion module and the second sub-digital-to-analog conversion module respectively receive and process 2N?1 digital signals, which correspondingly require 2*2N?1 switched capacitors. In a pipeline stage based on a structure of “N-bit sub-analog-to-digital conversion module+sub-digital-to-analog conversion module+subtractor+multiplier”, the non-inverting input and the inverting input of the differential input comparison are completely symmetrical, which correspondingly requires 2*2N switched capacitors.

Abstract: A low-jitter random clock generation circuit includes: a clock division and pulse generation module connected to an input clock, performing frequency division processing to obtain frequency division clocks, and then detecting some frequency division clocks one by one to obtain frequency division pulses in a one-to-one correspondence; a pseudorandom number generation module connected to one frequency division clock, and generating a pseudorandom number; a status control module connected to all the frequency division clocks and the pseudorandom number to generate status control signals; and a random clock output module connected to the input clock, all the frequency division clocks, all the frequency division pulses, and all the status control signals, randomly sampling the frequency division clocks by using the frequency division pulses under control of the status control signals, and synchronously outputting the randomly sampled frequency division clocks by using the input clock, to obtain random clocks.

Abstract: The present invention relates to the technical field of clamping equipment and discloses a clamping mechanism and a clamping apparatus.

Abstract: A halogen-substituted pyridazinone compound and an application thereof. Specifically disclosed is a compound represented by formula (I) or a pharmaceutically acceptable salt thereof.

Abstract: A flight control apparatus includes one or more memories individually or collectively storing computer program instructions, and one or more processors individually or collectively configured to execute the computer program instructions to: obtain a location of a movable object, obtain a location of a flight restriction zone, and control the movable object to take one or more flight response measures based on the location of the movable object and the location of the flight restriction zone. The flight restriction zone includes a flight restriction strip defined by an area encompassed by a first circle, a second circle, and one or more lines connected to the first circle and the second circle.

Abstract: Provided is an efficient approach to establish a foundational video-text model for tasks including open-vocabulary video classification, text-to-video retrieval, video captioning and video question-answering. Some example implementations include a model which can be referred to as VideoCoCa. Example implementations reuse a pretrained image-text contrastive captioner (CoCa) model and adapt it to video-text tasks with little or minimal extra training. While previous works adapt image-text models with various cross-frame fusion modules (for example, cross-frame attention layer or perceiver resampler) and finetune the modified architecture on video-text data, aspects of the present disclosure leverage findings that the generative attentional pooling and contrastive attentional pooling layers in the image-text CoCa design are instantly adaptable to “flattened frame embeddings”, yielding a strong zero-shot transfer baseline for many video-text tasks.

Abstract: A lithium manganese iron phosphate substrate, cathode material, and their preparation method, as well as a lithium battery, belonging to the field of lithium-ion battery technology. The preparation of the lithium manganese iron phosphate substrate comprises the following steps: dissolving soluble ferrous salt, soluble manganese salt, phosphoric acid, and lithium hydroxide in deionized water to react, obtaining Material A; filtering Material A, taking the filter cake and drying it to obtain Material B; Heat treating Material B in an inert gas atmosphere to obtain the lithium manganese iron phosphate substrate. By coating the surface of the carbon-free nano lithium manganese iron phosphate substrate with metal oxides or metal salts and carbon, the coating layer formed on the surface of the composite lithium manganese iron phosphate material effectively prevents the reaction between the lithium battery and the electrolyte.

Abstract: An AI-based system for the generation, evaluation, and prediction of performance of banner ads for presentation to specific customers or types of customers. A data set of existing banner ads, ad materials, and design and marketing parameters is used to generate a graph-based model. The graph-based model is used to generate original banner ads, which are then evaluated by a machine learning model, which assigns them scores. The highest-scoring banner ads are then presented to customers. The invention can also use a genetic algorithm in combination with iterative evaluation and generation to diversify design and choose the highest ranked banner ads.

Abstract: A sealing system for connecting a drainage device to a vehicle window, includes a fixing section for being connected to the vehicle window glass and an engaging section for being detachably connected to the drainage device, the engaging section including a supporting body, an elastic arm, and a transition portion connecting the supporting body to the elastic arm; wherein the sealing system further includes a positioning element connected to the transition portion and the supporting body, the positioning element being at least partially elastically deformable; further, the positioning element includes an elastic leg connected to the transition portion and an engaging head connected to the supporting body, the engaging head having a cross section presenting a U-shape or V-shape, and the U-shape or the V-shape having an opening oriented towards the supporting body.

Abstract: The present disclosure discloses a method and an apparatus for identifying an S-characteristic of a pump turbine and a control method. The method for identifying an S-characteristic of a pump turbine includes: collecting a set of state parameters of the pump turbine at a preset time interval, wherein the state parameters comprise a flow rate and a rotation speed of the pump turbine; calculating a slope of a relationship curve between the rotation speed and the flow rate of the pump turbine within a current preset time interval; and determining, according to the positivity or negativity and an absolute value of the slope, whether the pump turbine enters an S-characteristic region.

Abstract: A method and an apparatus of recognizing a package sorting behavior are provided. A target detection is performed on an image frame in a target video, so as to acquire at least one human detection box and at least one package detection box; a motion trajectory of the human detection box and a motion trajectory of the package detection box are tracked respectively; in a process of trajectory tracking for a package, a moment at which the package is thrown is recognized based on a current motion trajectory tracked for the package; and motion information of the package from the moment at which the package is thrown to a current moment is acquired, and a sorting behavior of the package is recognized based on the motion information.

Abstract: Methods and systems for media item characterization based on multimodal embeddings are provided herein. A media item including a sequence of video frames is identified. A set of video embeddings representing visual features of the sequence of video frames is obtained. A set of audio embeddings representing audio features of the sequence of video frames is obtained. A set of audiovisual embeddings is generated based on the set of video embeddings and the set of audio embeddings. Each of the set of audiovisual embeddings represents a visual feature and an audio feature of a respective video frame of the sequence of video frames. One or more media characteristics associated with the media item are determined based on the set of audiovisual embeddings.

Abstract: A photonic device structure and method of fabricating the same. The structure includes a substrate that has a first top oxide layer and a silicon layer that is formed on the first top oxide layer. The structure further includes a plurality of rib waveguide components that are formed in the silicon layer. A first rib waveguide component of the plurality includes first contact holes having a first contact hole depth, and a second rib waveguide component of the plurality includes second contact holes having a second contact hole depth, such that the depths of the first contact hole and the second contact hole are different.

Abstract: The present disclosure provides a display control method of a spliced screen including a plurality of sub-display screens, including: sending a display control signal to each sub-display screen in a wireless sending manner according to a time code signal; receiving, by each sub-display screen, the display control signal in a wired receiving manner, and reporting status information of each sub-display screen to the display controller; and controlling, by the display controller, displaying of each sub-display screen according to the status information of each sub-display screen, where the time code signal indicates a current time point; the display control signal is configured for controlling the sub-display screen to perform corresponding display processing on display content stored, so that the sub-display screens display a target display content together. The present disclosure further provides a display control device, a display system, an electronic device, and a computer readable storage medium.

Abstract: Implementations of the present specification provide methods and apparatuses for training a behavior prediction model. In the implementations of the present specification, a sequence (a behavior sequence of a user) that includes multiple behavior types is split according to behavior types to obtain multiple single-behavior sequences. Time coding is performed on all time points of each of the multiple single-behavior sequences, to obtain multiple single-behavior time sequences corresponding to the multiple single-behavior sequences. Each single-behavior time sequence in the multiple single-behavior time sequences is modeled by using a behavior prediction model, and attention is paid to all time points of each single-behavior time sequence in the multiple single-behavior time sequences, so as to obtain a distribution situation of behaviors corresponding to the multiple single-behavior time sequences in terms of time as predicted by the behavior prediction model.

Abstract: Various examples of automated processes, computing systems, devices and other aspects of a wireless data network are disclosed herein. According to various embodiments, message flooding in the wireless network is reduced through the use of “dummy” messages from the radio unit (RU) to the distributed unit (DU) or layer two (L2) switch. The dummy messages tend to prevent timeout of the RU's data in the L2 switch's routing tables, thereby prolonging the period of time that the L2 switch is able to more efficiently direct subsequent traffic toward that particular device.

Abstract: A method for producing glucose and derivatives thereof by means of biotransformation with a recombinant yeast, which belongs to the technical field of synthetic biology. A construction method comprises any one of the following steps: i, knocking out metabolic pathway-related enzymes of glucose and derivatives thereof in a yeast strain; ii, enhancing or using an activity of synthetic pathway-related enzymes of glucose and derivatives thereof in the yeast strain; and iii, enhancing or using a capability of glucose and derivatives thereof in the yeast strain to enter and exit the yeast. Further provided are a recombinant yeast strain capable of producing glucose or derivatives thereof at a high yield and the use thereof in the conversion of a non-grain low-carbon carbon source.

Abstract: A device and method for regulating the release of adenosine in an organism, and the use thereof. The device comprises a stimulus generator for generating stimuli of a specific frequency. The use of the device of the present invention in an organism can effectively increase the concentration of adenosine in the brain of the organism, thereby providing an effective strategy for the improvement of sleep disorders.