Abstract: Disclosed are a method for processing an image, an electronic device, and a storage medium. The method includes: acquiring a plurality of point cloud grids from a gridded point cloud map; determining each reference plane with the number of sampling points matched being greater than or equal to a threshold from the initial planes corresponding respectively to the plurality of the point cloud grids; correcting the initial planes corresponding respectively to the plurality of point cloud grids based on each reference plane to obtain target planes corresponding respectively to the plurality of point cloud grids; and performing denoise processing on sampling points based on the target plane of each point cloud grid.

Abstract: The disclosure provides a chain type stepless transmission, including: a box, a pair of active cone discs including a fixed cone disc and a moving cone disc, a pair of passive cone discs including a fixed cone disc and a moving cone disc, an input shaft, an output shaft and a chain, there are a group of pulleys in the middle of each pair of passive cone discs and in the middle of each pair of active cone discs respectively, and the number of the group of pulleys may be an arbitrary value, such as 2, 3, 4, 5, 6, 7, 8, etc. In the stepless transmission, the fixed cone disc and the moving cone disc then transmit power from the input shaft to the output shaft through the chain, thereby realizing a high power of power transmission and a high torque.

Abstract: The present invention discloses a composite device for high-precision laser additive/subtractive manufacturing, which consists of a sealed shaping chamber, an inert protective gas source and a machine-shaping platform; wherein, the inert protective gas source is connected to the sealed shaping chamber; and the machine-shaping platform is arranged in the sealed shaping chamber, as well as there is a light path selection system is arranged right above the machine-shaping platform; in addition, there is a machining position is equipped on the machine-shaping platform, meanwhile, there are lead screws are arranged under the machine-shaping platform.

Abstract: Provided herein is a power distribution system comprising a feedback circuit including a transistor in series with a relay, the feedback circuit regulating regulate a main power path including a main power supply connected in series with an electric power converter. The power distribution system further comprises OR-ing controllers that regulate the main power path and a backup power path including a low-voltage battery. The power distribution system further comprises terminals through which power from the main power path or the backup power path is transmitted to respective components corresponding to channels. The power distribution system further includes a microcontroller that acquires data in each of the channels and control operations associated with each of the channels based on the acquired data.

Abstract: The present invention discloses a generative adversarial network-based optimization (GAN-O) method. The method includes: transforming an application into a function optimization problem; establishing a GAN-based function optimization model based on a test function and a test dimension of the function optimization problem, including constructing a generator G and a discriminator D based on the GAN; training the function optimization model by training the discriminator and the generator alternatively, to obtain a trained function optimization model; and using the trained function optimization model to perform iterative calculation to obtain an optimal solution. In this way, the optimal solution is obtained based on the GAN. The present invention can improve the parameter training process of a deep neural network to obtain a better local optimal solution in a shorter time, making the training of the deep neural network more stable and obtaining better local search results.

Abstract: Embodiments of the present disclosure provide a method and a device for cross-domain strong logically isolation and secure access control in the Internet of Things (IoT). The method includes the following. When one IoT gateway receives the identity authentication request, the IoT gateway sends the identity authentication request to all IoT gateways in the domain excluding that IoT gateway. When all IoT gateways in the domain receive the identity authentication request, all IoT gateways verify separately whether the identity authentication request is legal. After a certain IoT gateway obtains the identity authentication result, a distributed consensus procedure is initiated. The IoT gateways in the domain reach a consensus on the identity authentication result through a distributed consensus mechanism, and the identity authentication result is written and stored to a block of a blockchain.

Abstract: Itineraries may be recommended using rider context information relating to a rider. The rider context information may be obtained from various sources. Location information including an origin and a destination may obtained. A set of itineraries may be generated based on the rider context information. Each itinerary may include at least one mode of transportation to allow the rider to travel from the origin to the destination. Each itinerary in the set of itineraries may be ranked based on the rider context information.

Abstract: A resistive memory device includes a stacked structure and a copper via conductor structure. The stacked structure includes a first electrode, a second electrode, and a variable resistance layer. The second electrode is disposed above the first electrode in a vertical direction, and the variable resistance layer is disposed between the first electrode and the second electrode in the vertical direction. The copper via conductor structure is disposed under the stacked structure. The first electrode includes a tantalum nitride layer directly connected with the copper via conductor structure.

Abstract: A method comprising: acquiring a predetermined policy, the predetermined policy being a policy of a wireless connection between a wireless probe and a host device; according to the predetermined policy, controlling the wireless probe to selectively connect to one host device from at least two host devices, each of the at least two host devices at least having a component for wirelessly connecting to the wireless probe; controlling the wireless probe to transmit ultrasonic waves to a target object and receive echoes based on the ultrasonic waves to obtain ultrasonic echo signals; and controlling the wireless probe or the host device connected to the wireless probe to process the ultrasonic echo signals to obtain target ultrasonic data of the target object, and displaying the target ultrasonic data by the host device connected to the wireless probe.

Abstract: The disclosure relates to a control method of a probe with ultrasonic phased array transducers in a hinge array, and belongs to the technical field of ultrasonic detecting.

Abstract: A zero-voltage zero-current soft switching type driving method for an ultrasonic motor is provided, relating to the technical field of driving of a two-phase actuator. The disclosure solves the problems of high loss, high heat amount and the like in a traditional ultrasonic motor driving circuit. The method provided realizes resonance between series inductors and buffer capacitors by means of an optimal design of the inductance of matching inductors, the capacitance of buffer capacitors, a dead time value and a delay time value, thereby causing a power tube to realize zero-voltage and zero-current switching. Two signal input ends of a two-phase pseudo full bridge inverter are connected to a power grid, and two signal output ends of the two-phase pseudo full bridge inverter are respectively connected to two signal input ends of a matching circuit; and the output ends of the matching circuit are respectively connected to a two-phase ultrasonic motor.

Abstract: An ultrasonic phased array transducer device with a two-dimensional hinge array structure belongs to equipment in the technical field of ultrasonic detection. A connecting rod is fixedly connected to a fixed support and a two-dimensional hinge array respectively. Voice coil motors are symmetrically arranged in a shape of the British “Union Jack” with the connecting rod as a center, and are fixedly connected to the fixed support. Force output rods are respectively connected to voice coil motor coils and the upper surfaces of array units. Piezoelectric array elements are fixedly connected to the lower surfaces of all the array units. The numbers of the voice coil motors and the force output rods are 2N (N=4, 8, 12, 16, 20), the number of the piezoelectric array elements is 2N+1, and different N values are selected according to the sizes of workpieces to be detected.

Abstract: Embodiments of this application provide a key generation method, applied to a scenario in which a base station is divided into a centralized unit and a distributed unit and a control plane and a user plane of the centralized unit are separated. And the control plane entity of the centralized unit obtains a root key, generates a user plane security key based on the root key, and sends the first user plane security key to the user plane entity of the first centralized unit. According to this application, key isolation between different user plane entities is implemented. Further, in an actual operation, the control plane entity or the user plane entity of the centralized unit may be flexibly selected to generate the user plane security key.

Abstract: The present disclosure is directed to an automated neural architecture search approach for designing new neural network architectures such as, for example, resource-constrained mobile CNN models. In particular, the present disclosure provides systems and methods to perform neural architecture search using a novel factorized hierarchical search space that permits layer diversity throughout the network, thereby striking the right balance between flexibility and search space size. The resulting neural architectures are able to be run relatively faster and using relatively fewer computing resources (e.g., less processing power, less memory usage, less power consumption, etc.), all while remaining competitive with or even exceeding the performance (e.g., accuracy) of current state-of-the-art mobile-optimized models.

Abstract: The present disclosure relates to the technical field of data anomaly detection and alarm, and more particularly, to a data anomaly statistics and alarm method and apparatus, and an electronic device, which effectively relieve the problem of alarm missing in the related technologies, thereby effectively avoiding the loss of enterprises due to alarm missing, the method includes: acquiring a detection time and a detection result of each of a plurality of data respectively through detecting; counting the number of target data in a current time window, and generating an alarm signal to prompt in response to the number of target data obtained by the counting being greater than a preset number threshold corresponding to a quality level of the data; moving the current time window backward according to a stepping duration included in an obtained stepping duration setting rule corresponding to the quality level of the data, and the current time window moved backward is used as a new current time window.

Abstract: Provided are a networking and positioning method, system and device, and a storage medium. The method comprises: acquiring, by means of Bluetooth communication, Bluetooth broadcast positioning data broadcast by a positioning master base station in a preset positioning region, wherein a positioning beacon and the positioning master base station are each provided with a Bluetooth communication device; and networking and positioning the positioning beacon on the basis of the Bluetooth broadcast positioning data.

Abstract: A dimming circuit for dimming a current flowing through a light emitting device, having: a multi-function pin, configured to receive a dimming signal; wherein when the dimming signal is an analog voltage signal, an amplitude of the current flowing through the light emitting device is regulated based on the dimming signal; when the dimming signal is a pulse signal and a frequency of the dimming signal is in a first frequency range, a duty cycle of the current flowing through the light emitting device is regulated based on the dimming signal; and when the dimming signal is the pulse signal and the frequency of the dimming signal is in a second frequency range, the amplitude of the current flowing through the light emitting device is regulated based on the dimming signal.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for determining a plurality of context-based subscription products in a ride-hailing platform are described. An exemplary method may include: determining a plurality of transportation contexts to which a plurality of context-based subscription products are applicable; obtaining a plurality of historical trip-requesting sessions between a plurality of riders and the ride-hailing platform, and a plurality of historical subscription products offered to the plurality of riders; constructing at least one key performance indicator (KPI) model that predicts a reward for the ride-hailing platform offering the plurality of context-based subscription products to the plurality of riders; constructing an optimization model to maximize a weighted sum of the at least one KPI model; and determining optimal values of the plurality of parameter vectors corresponding to the plurality of context-based subscription products.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media for carpool dual-pricing in ridesharing are provided. An exemplary method comprises: obtaining a machine-learning model trained to generate a probability for a carpool request from a rider to convert to a trip based at least on a pair of price adjustment multipliers applied to the carpool request; determining one or more Key Performance Indicator (KPI) models based on the machine-learning model; constructing an optimization model based on the KPI models, the optimization model comprising a plurality of pairs of price adjustment multipliers as decision variables; and determining optimal values of the plurality of pairs of price adjustment multipliers for the plurality of pricing units by solving the optimization model based on a plurality of historical carpool requests.

Abstract: A method for processing an image may include: acquiring a target image; segmenting a target object in the target image, and determining a mask image according to a segmentation result; rendering the target object according to the target image and the mask image and determining a rendering result; and performing AR displaying according to the rendering result. A device and storage medium may implement the method.