Abstract: Embodiments of this application disclose a signal processing method and a related apparatus. The signal processing method may be applied to an optical communication scenario. The method in embodiments of this application includes: a transmitter inverts polarities of some symbols in a first modulated signal to obtain a second modulated signal, so that an absolute value of a sum of values of all symbols in the second modulated signal is less than an absolute value of a sum of values of all symbols in the first modulated signal. In this way, power of a low-frequency part in the second modulated signal is suppressed. In addition, the receiver performs inverse transformation of power spectrum adjustment on the received signal based on identification information, to restore the original signal that is before the transmitter performs power spectrum adjustment.

Abstract: An apparatus comprising an interface and a processor. The interface may be configured to receive pixel data of an environment. The processor may be configured to process the pixel data arranged as video frames, generate a luminance distribution map of the video frames in response to a low-pass filter operation, determine a plurality of defogging intensity weights for the luminance distribution map, perform adaptive smoothing to each of the plurality of defogging intensity weights, and generate defogged video frames in response to the video frames and the plurality of defogging intensity weights with the adaptive smoothing. The plurality of defogging intensity weights may each correspond to one of a plurality of luminance intervals of the luminance distribution map. The adaptive smoothing may be configured to prevent brightness differences in the defogged video frames.

Abstract: Apparatuses, systems, and techniques to obtain one or more captions for a video using machine learning. In at least one embodiment, at least one machine learning process is used to generate at least one output caption using at least one image-level caption, at least one video-level caption, and/or at least one motion caption. In at least one embodiment, the video-level caption(s) is/are generated by one or more second machine learning processes using the video, and the image-level caption(s) is/are generated by one or more third machine learning processes using one or more images sampled from the video.

Abstract: An end mill with a gradient edge geometry and a grinding method thereof relate to the technical field of metal cutting. Through multi-dimensional data acquisition, the grinding method comprehensively evaluates a cutting load, a cutting temperature and a cutting vibration amplitude of the tool, and overcomes limitations of the conventional method. By setting a lifetime evaluation criterion and an alert threshold, the grinding method forms a scientific evaluation system, improving accuracy of the evaluation and lifetime of the tool. By combining a preliminary adjustment strategy with a fine adjustment strategy, the grinding method improves the adaptability of the tool in complex conditions, ensuring that the tool works in an optimal state all the time.

Abstract: A solid heat carrier catalyst for thermal desorption of organic matter-contaminated soil and a method for preparing the same. A hollow alumina ball prepared by 3D printing is taken as a solid heat carrier, copper-nickel-vanadium composite oxide is taken as a catalytic active component, and vinyltriethoxysilane is taken as a masking agent. The ball has a diameter of 30 mm to 60 mm and a thickness of 1 mm to 2 mm. An outer surface of the ball is masked with the vinyltriethoxysilane; then the ball is pierced to make an inner surface thereof connected with the outside through channels; the ball is then immersed in a catalytic active component precursor solution; and finally, drying and calcination are performed to obtain the solid heat carrier catalyst for thermal desorption of organic matter-contaminated soil. This product is widely applicable to the field of thermal desorption of organic contaminants of soil.

Abstract: Batteries having convoluted, freeform shapes. These batteries can have curved and twisted surfaces that are freeform and do not have a constant radius or degree of rotation. A stack of battery layers can undergo a two-step heat press. The first heat press can be applied to the battery layers in a limited, low-stress region. This heat-press step can help to reduce delamination during a second heat-press step. In this second heat-press step, some or all of the battery layers can be pressed into a freeform shape and heat can be applied. The battery layers can then be placed in an enclosure.

Abstract: A laser is provided, which includes a frame, a substrate, heat sinks, light-emitting chips, and protective devices. The frame and the heat sinks are fixed to the substrate. The heat sinks, the light-emitting chips, and the protective devices are located inside the frame. The light-emitting chips and the protective devices are fixed to the heat sinks, and the light-emitting chip and the corresponding protective device have a spacing therebetween in a length direction of the heat sink.

Abstract: Apparatuses, systems, and techniques are disclosed for controlling a robot to execute a task. In at least one embodiment, a current image of the robot in an environment and a text describing the task are obtained. A future image of the robot in the environment is predicted based on the current image and the text. Subsequently, one or more actions are predicted based on the current image, the future image, and the text. The one or more actions can move the robot from a first state corresponding to the current image to a second state corresponding to the future image. The robot executes the sequence of actions to move in the environment.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for controlling an agent interacting with an environment. In one aspect, a method comprises: receiving an observation that characterizes the environment; receiving a conditioning input that characterizes a task to be performed by the agent in the environment; for each of a plurality of sub-regions of the observation, generating an observation patch embedding of the sub-region; generating a conditioning input embedding of the conditioning input; processing the observation patch embeddings and the conditioning input embedding to generate a policy output that defines an action to be performed by the agent in response to the observation, wherein the processing comprises applying a linear attention mechanism over the observation patch embeddings and the conditioning input embedding; selecting an action to be performed by the agent using the policy output; and causing the agent to perform the selected action.

Abstract: A high-acoustic-resistance piston motion loudspeaker disclosed in the present disclosure belongs to the field of sound-electricity conversion. The loudspeaker includes a substrate, a driving assembly, a vibrating diaphragm, a connecting assembly and a vibration cavity. The connecting assembly is not coplanar with the vibrating diaphragm, which is of a concealed connecting structure. The driving assembly is configured to drive the vibrating diaphragm to generate a piston motion. The vibrating diaphragm is located in the vibration cavity, and a displacement range of the vibrating diaphragm in a perpendicular direction is within a height range of the vibration cavity formed by a supporting structure extending in a thickness direction of a base, so as to achieve purposes of reducing air leakage and improving a sound pressure level in a working process of the loudspeaker.

Abstract: Various implementations provide one or more geometric representations of a physical environment based on room-specific subsets of the sensor data. For example, a method may include obtaining sensor data of a physical environment that includes a plurality of rooms, and the sensor data includes images of the physical environment. The method may further include obtaining room boundary information associated with the physical environment, wherein the room boundary information is determined based on the sensor data. The method may further include identifying room-specific subsets of the sensor data based on the room boundary information. The method may further include generating one or more geometric representations of the physical environment based on the room-specific subsets of the sensor data.

Abstract: A mobile underwater power generation system for an ocean-going vessel utilizing gravitational potential energy, including a hull of the ocean-going vessel, a cabin water tank, an open annular pipe structure, a ducted dual-magnetic circuit coreless tidal generator, a ducted water transfer pump, a fuel generator set, a control cabinet, a first electric motor, a second electric motor, a first propeller and a second propeller. The ducted water transfer pump includes a main shaft, a first fixing ring, an annular housing, a first bearing component, an annular stator winding structure, a rotor permanent magnet, a second bearing component, a second fixing ring, first fixing components, a flange bolt, a first rotor graphite bearing, an annular mounting sleeve, a water guide blade, a lead wire of the annular stator winding structure, a second rotor graphite bearing and second fixing components.

Abstract: Apparatuses, systems, and techniques for cross-modality alignment for large language models (LLMs), enabling enhanced multi-modal interaction. In at least one embodiment, a textual embedding is obtained by encoding a multi-modal input and algining the encoded results into a textual embedding space. A visual embedding is obtained based on features extracted from visual data in the multi-modal input using visual encoders. A multi-modal output is generated based on the textual embedding and the visual embedding.

Abstract: A laser device includes a substrate, a first frame, at least one packaging structure, at least one light-emitting chip, a target optical element and a first cover. The first frame is fixed to the substrate to define a first accommodating space. The packaging structure is located in the first accommodating space and forms a second accommodating space. The light-emitting chip is located in the second accommodating space and configured to emit laser beams. The target optical element is located in the first accommodating space. The first cover is fixed to a side of the first frame away from the substrate. The packaging structure includes a target side wall, located on a light exit side of the light-emitting chip and the target side wall is light-transmissive. The laser beams emitted from the light-emitting chip is transmitted to the target optical element through the target side wall.

Abstract: A method of updating a trained cardinality estimation model includes receiving a cardinality estimation model with cardinality labels and detecting a drift in underlying data or predicates of the cardinality estimation model. The type of the detected drift is determined and new test queries that mimic test queries for the detected drift are synthesized. A portion of the synthesized test queries is selected to reduce annotation cost and used to update the cardinality estimation model.