Abstract: A light detection and ranging (LiDAR) system includes a rotatable polygon having a plurality of reflective sides including a first reflective side. The rotatable polygon configured to scan one or more first light signals in a first direction. The LiDAR system also includes a scanning optic configured to scan the one or more first light signals in a second direction different than the first direction. A first light source is configured to direct the one or more first light signals to one or more of the plurality of reflective sides of the rotatable polygon or the scanning optic. A first detector is configured to detect a first return light signal associated with a signal of the one or more first light signals. One or more optics are configured to focus the first return light signal on the first detector.

Abstract: The disclosure provides a flexible cryoablation needle device resistant to a low temperature and a high pressure, a threaded part is arranged on the outer wall of a liner pipe to enhance a connection strength between the liner pipe and a flexible pipe structure. Since an annular protrusion portion is arranged on the outer wall of the liner pipe, further leakage of a gas coming from a pressure relief process is prevented and the connection strength is enhanced as well. Air tightness and connection strength are further guaranteed by radial extrusion of extruding pipes. And an inner cavity in a cutter head is directly subjected to pressure relief through a cutter head vent, a pressure relief intermediate cavity, a liner vent, a flexible pipe vent and a pressure relief gap.

Abstract: The invention relates to a vehicle lighting system based on infrared light sources, the vehicle lighting system comprising: an infrared matrix lamp, which comprises a plurality of infrared light sources arranged in a matrix and which is configured to be mounted on a vehicle to provide an illumination range with respect to the vehicle, wherein each of the plurality of infrared light sources corresponds to an illumination region in the illumination range; and a matrix lamp controller configured to turn on, when a target region needs to be illuminated, an infrared light source in the infrared matrix lamp corresponding to the target region on the basis of relative position information between the target region and the vehicle, wherein the relative position information comprises an angular position of the target region relative to a vehicle reference. The invention further relates to a vehicle comprising the vehicle lighting system.

Abstract: A method for forming a glass sheet includes forming a glass ribbon. A robot arm is operated to move an end effector through a preprogrammed cycle. The cycle includes engaging a segment of the glass ribbon with the end effector, separating the engaged segment from the glass ribbon to generate a glass sheet, and moving the glass sheet away from the glass ribbon. The preprogrammed cycle designates predetermined positions of the end effector at predetermined points in time. While the robot arm is operating through the preprogrammed cycle, a parameter indicative of a force being exerted on the glass ribbon by the end effector is sensed. A position of the end effector is altered to differ from the predetermined position at the corresponding point in time when the sensed parameter deviates from a target value. An excessive force applied to the glass ribbon can be reduced in real-time.

Abstract: A method for determining lower radius limit of movable throat of shale is provided, and it includes: performing a low-temperature nitrogen adsorption test on a target shale to obtain first pore radii; performing a high-pressure mercury injection test on the target shale to obtain second pore radii; performing a nuclear magnetic resonance test on the target shale to obtain third pore radii; obtaining a relationship diagram of distribution frequencies and pore radii according to three pore radii; distinguishing, according to the pore radii, relationship diagram data, and performing normalization processing to determining a relationship curve of normalized frequency data and the pore radii; and determining a lower radius limit of movable throat of shale according to relationship curve. A problem of describing characteristics of shale occurrence space with complex pore structures and strong heterogeneity is solved, the method is suitable for determining lower radius limit of movable throat of shale.

Abstract: A method includes obtaining a source training dataset that includes a plurality of source training images and obtaining a target training dataset that includes a plurality of target training images. For each source training image, the method includes translating, using the forward generator neural network G, the source training image to a respective translated target image according to current values of forward generator parameters. For each target training image, the method includes translating, using a backward generator neural network F, the target training image to a respective translated source image according to current values of backward generator parameters. The method also includes training the forward generator neural network G jointly with the backward generator neural network F by adjusting the current values of the forward generator parameters and the backward generator parameters to optimize an objective function.

Abstract: A method for determining lower radius limit of movable throat of shale is provided, and it includes: performing a low-temperature nitrogen adsorption test on a target shale to obtain first pore radii; performing a high-pressure mercury injection test on the target shale to obtain second pore radii; performing a nuclear magnetic resonance test on the target shale to obtain third pore radii; obtaining a relationship diagram of distribution frequencies and pore radii according to three pore radii; distinguishing, according to the pore radii, relationship diagram data, and performing normalization processing to determining a relationship curve of normalized frequency data and the pore radii; and determining a lower radius limit of movable throat of shale according to relationship curve. A problem of describing characteristics of shale occurrence space with complex pore structures and strong heterogeneity is solved, the method is suitable for determining lower radius limit of movable throat of shale.

Abstract: In certain embodiments, intent prediction and dialogue generation may be facilitated. In some embodiments, a chat initiation request may be obtained from a user. The latest activity information associated with the user may be provided to a prediction model to obtain a first set of predicted intents of the user. For each intent of the first set of predicted intents, a candidate question may be selected from a question set based on the candidate question matching the intent. In some embodiments, the candidate questions may be simultaneously presented on the chat interface.

Abstract: A MEMS microphone includes a substrate, a supporting plate, a capacitor system, a first pad, and a first electrode. The substrate defines a back cavity, the supporting plate is disposed at one side of the substrate and defines an accommodation cavity, and the capacitor system is disposed at the supporting plate. The capacitor system includes a back plate, a fixing component, and a vibrating diaphragm. The vibrating diaphragm is fixed to one side of the fixing component distal from the back plate. The vibrating diaphragm forms a cantilever structure fixing at the middle, and the first electrode is only connected to a central region of the vibrating diaphragm, the first electrode may not interfere with deformation of an edge region of the vibrating diaphragm, thereby improving sensitivity of the MEMS microphone through fully releasing residual stress of the vibrating diaphragm.

Abstract: A quick-charge voltage booster circuit for heating comprises a plurality of heating elements connected in parallel, at least one controller electrically connected with the heating elements, and at least one electrical connector electrically connected with the controller. The electrical connector is configured to connect to an external power source for providing input voltages to the heating elements, the controller is configured to detect an input voltage for each heating element first, and then different input voltages from the external power source are adapted and boosted to a preset value for heating. After invoking the supply voltage of a portable charger, the quick-charge voltage booster circuit provided by the present invention boosts the voltage again internally, thereby the power is higher and the heating effect is better.

Abstract: The present disclosure discloses an optical imaging system. The optical imaging system comprises a lens barrel, and a lens group and at least one spacing element accommodated in the lens barrel. The lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens that are arranged in sequence along an optical axis from an object side to an image side. Here, the sixth lens has a negative refractive power. The at least one spacing element comprises a fifth spacing element that is located between the fifth lens and the sixth lens and is in contact with an image-side surface of the fifth lens.

Abstract: Embodiments discussed herein refer to a relatively compact and energy efficient LiDAR system that uses a multi-plane mirror in its scanning system.

Abstract: A voiceprint authentication apparatus is provided, comprising: a voice receiving module configured to receive a user's voices in different speaking modes; a feature extraction module configured to extract respective sets of voice features from the user's voices in different speaking modes; a synthesis module configured to generate a first voiceprint template by synthesizing the respective sets of voice features; and a first communication module configured to send the first voiceprint template to a server to authenticate the user, wherein the user's voices and the respective sets of voice features are not sent to the server. A corresponding voice authentication method, as well as a computer readable medium, are also provided.

Abstract: The present disclosure describes a system and method for coaxial LiDAR scanning. The system includes a first light source configured to provide first light pulses. The system also includes one or more beam steering apparatuses optically coupled to the first light source. Each beam steering apparatus comprises a rotatable concave reflector and a light beam steering device disposed at least partially within the rotatable concave reflector. The combination of the light beam steering device and the rotatable concave reflector, when moving with respect to each other, steers the one or more first light pulses both vertically and horizontally to illuminate an object within a field-of-view; obtain one or more first returning light pulses, the one or more first returning light pulses being generated based on the steered first light pulses illuminating an object within the field-of-view, and redirects the one or more first returning light pulses.

Abstract: A policy map is obtained that includes of prescribed machine settings values for controlling a machine to perform an operation at different locations in the field. Sensor signals indicating conditions that will be encountered by the machine in the future, as it moves through the site. A predictive model provides an expected machine response, based upon the a future condition and a prescribed machine setting value. Adjusted machine setting value is generated based on the expected machine response. Control signals are generated, based on the adjusted machine setting value, to control a set of controllable subsystems.

Abstract: Methods and systems are described for generating dynamic conversational responses using machine learning models. The dynamic conversational responses may be generated in real time and reflect the likely goals and/or intents of a user. The machine learning model may provide these features by monitoring one or more user actions and/or lengths of time between one or more user actions during conversational interactions.

Abstract: The present disclosure discloses an optical imaging system including, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens and a fourth lens. The first lens has negative refractive power, an object-side surface thereof is a convex surface, and an image-side surface thereof is a concave surface; the second lens has refractive power; the third lens has refractive power; and the fourth lens has positive refractive power, an object-side surface thereof is a convex surface, and an image-side surface thereof is a concave surface. A wavelength ? of a chief ray of the optical imaging system and a tangent tan ? of a half field-of-view of the optical imaging system satisfy 0.5 ?m<?*tan ?<1.0 ?m.

Abstract: The present invention discloses a Micro-Electro-Mechanical System MEMS) chip including a substrate with a back cavity; a capacitance system disposed on the substrate including a back plate, a membrane opposite to the back plate forming an inner cavity; a protruding portion accommodated in the inner cavity, fixed on one of the back plate and the membrane and spaced apart from the other along a vibration direction; a reinforce portion fixed to the membrane, having an area smaller than that of the membrane; a support system configured to support the capacitance system, including a first fixation portion suspending the membrane on the substrate, and a second fixation portion suspending the back plate on the substrate. The MEMS chip has higher sensitivity, higher resonance frequency and higher low frequency property.

Abstract: Embodiments discussed herein refer to a relatively compact and energy efficient LiDAR system that uses a multi-plane mirror in its scanning system.

Abstract: A preparation method for an easily-releasable concrete test mould with an inner wall having ultra-hydrophobic/ultra-smooth performance includes spin-coating a negative photoresist and obtaining a substrate with an inner wall having inverted-trapezoid microstructures by ultraviolet lithography; depositing a metal layer by vacuum evaporation; removing the metal layer on an upper surface of the inverted trapezoid microstructures of the inner wall of the substrate; obtaining a micro-nano hierarchical structure on the metal layer surrounding the inverted trapezoid microstructures of the inner wall of the substrate; spin-coating a molten wax and cooling down to room temperature, and filling the solid wax into micron-level pores between the inverted trapezoid structures; spin-coating a positive photoresist and performing ultraviolet lithography; g.