Abstract: A communication method and a communication apparatus, wherein the method includes: A first device determines path parameter group search range information and first information, where the first information indicates K path parameter groups, and K is an integer greater than 0; and the first device sends the path parameter group search range information and the first information to a second device, where the path parameter group search range information is used to correct the K path parameter groups, and K corrected path parameter groups are used for channel estimation.

Abstract: A data transmission method and apparatus, and relates to the communication field. In the method, after obtaining a path parameter of each of at least one communication path between a first device and a second device, the first device may demodulate first data based on a pilot and the path parameter of each communication path. In other words, when demodulating the first data, the first device may refer to not only the pilot but also the path parameter of each communication path. The path parameter of each communication path can assist in demodulating the first data. When the path parameter of each communication path assists in demodulating the first data, there may be no need for too many pilots. Therefore, a resource occupied by the pilot can be reduced.

Abstract: An environmental imaging method includes: A first device sends first indication information to a second device, where the first indication information indicates a first spatial location at which the second device is to send a measurement signal, and the first spatial location is evenly distributed in an azimuth direction and/or at an azimuth angle; the first device receives an echo signal, where the echo signal is a signal formed by reflecting, by a target, the measurement signal sent by the second device after the measurement signal arrives at the target; and the first device performs imaging on the target based on the echo signal. The method may be implemented in a system or an apparatus.

Abstract: A device for separating and recovering flat-plate catalyst powder and a method for determining a wear ratio are provided. The device includes a powder separation unit and a powder recovery unit, a powder accumulation bin is respectively connected with a shell and a catalyst powder outlet, a cyclone outlet is configured on an inner side of a recovery shell, and a primary filter and a secondary filter are configured on an inner side wall of the recovery shell.

Abstract: Embodiments of this application provide a sensing signal sending method, a sensing signal receiving method, and an apparatus. The method includes: A first communication device determines first time domain resource configuration information based on a speed resolution and a maximum unambiguous speed that are related to a target object, and sends a sensing signal to a second communication device at a plurality of sending moments that are on a time domain resource and that are indicated by the first time domain resource configuration information, so that the second communication device calculates a speed of the target object based on the sensing signal.

Abstract: A graphitization furnace includes a furnace body, an upper lining, an insulating lining, a lower lining, a positive electrode and a negative electrode. The upper lining, the insulating lining and the lower lining are all disposed as attached to an inner wall of the furnace body, and the upper lining, the insulating lining and the lower lining sequentially abut against one another along a direction from top to bottom, and the upper lining, the insulating lining and the lower lining are all substantially provided with first through holes with a common axis. The positive electrode is substantially disposed vertically, a lower end of the positive electrode is disposed within the upper lining, the negative electrode is substantially disposed horizontally, and a middle part of the negative electrode is provided with a second through hole for passing raw ingredients.

Abstract: This application relates to an information exchange method and a related apparatus. The method includes: A resource-limited node (for example, a STA) requests to enable an AI-assisted rate adaptation function, and after agreeing to the request, a node with a more powerful function (for example, an AP) sends, to the STA, related information of a neural network (such as a structure, a parameter, an input, and an output of the neural network) that has been trained, so that the STA determines the neural network based on the related information, and performs inference and decision-making based on data observed by the STA, to obtain a rate adaptation decision result. According to embodiments of this application, a basis can be provided for the resource-limited node to implement AI-assisted rate adaptation, and further, performance can be improved.

Abstract: Disclosed is a method for identifying a vibration magnitude of a TBM main beam using a geological feature parameter and a tunneling feature parameter constructed based on tunnel boring machine (TBM) tunneling parameters. The method includes: collecting vibration signals of the main beam and tunneling parameters of a TBM through an in-situ tunneling test and preprocessing such data, researching a correlation law between the tunneling parameters and a vibration feature root mean square (RMS), providing two feature parameters of a field penetration index (FPI) and a cutterhead power index (TNI), establishing a multivariate regression prediction model for vibration of the TBM main beam based on the feature parameters, and verifying and analyzing the model under different surrounding rock conditions. An average relative error of prediction is 12% or within, and a quantitative relation between the vibration features of the main beam and the feature parameters of the TBM is given.

Abstract: A radio frequency transmitter is provided. The radio frequency transmitter includes a radio frequency front-end and a control circuit. The radio frequency front-end includes a current source set, a compensation circuit, and a matching network. The compensation circuit may compensate for a difference of load impedance between N current source subsets in the current source set. Therefore, an impedance mismatch of the current source set may be alleviated, and a power loss of the current source set may be avoided. This helps improve the efficiency of the radio frequency transmitter.

Abstract: A data display method and an apparatus. The method includes: obtaining, from a first device, an object parameter and a service forecast quantity of a first object in a first service unit, and an available quantity of the first object; determining a first replenishment quantity for making replenishment for the first object in the first service unit according to the object parameter and the service forecast quantity; and determining a second replenishment quantity for replenishment that needs to be made for the first object in the first service unit according to the available quantity and the first replenishment quantity, and displaying the second replenishment quantity, which is used to improve an efficiency of making replenishment for the first object in the first service unit.

Abstract: This disclosure relates to analysing rock falls. A video camera captures video data, a depth measurement system captures depth data, a seismic sensor captures seismic data, and a data store stores spatial characterising data of the rock fall site. A processor detects a rock fall source location based on the video data, depth data, seismic data; determines a three-dimensional free fall estimation based on the rock fall source location; estimates three-dimensional bounce kinematics based on the three-dimensional free fall estimation and the spatial characterising data of the rock fall site; estimates a runout based on the rock fall source location, free fall and bounce kinematics; and combines the rock fall source location, the three-dimensional free fall, the three dimensional bounce kinematics and the runout to determine a rock fall trajectory.

Abstract: A radio frequency transmitter is provided. The radio frequency transmitter includes a radio frequency front-end and a control circuit. The radio frequency front-end includes a current source set, a compensation circuit, and a matching network. The compensation circuit may compensate for a difference of load impedance between N current source subsets in the current source set. Therefore, an impedance mismatch of the current source set may be alleviated, and a power loss of the current source set may be avoided. This helps improve the efficiency of the radio frequency transmitter.

Abstract: Embodiments of this application provide a capacitor unit, an integrated capacitor, and a resonance unit. The capacitor unit includes: a conductive cavity, where an accommodation space is set longitudinally through in the conductive cavity; and a conductive core, where a first part of the conductive core and a second part of the conductive core are connected by using a via hole, the first part of the conductive core is located above or below the conductive cavity, and the second part of the conductive core is located in the accommodation space of the conductive cavity; and the conductive cavity is isolated from the conductive core by using an oxide layer or an insulation layer. The embodiments of this application can reduce impact from the outside on the capacitor unit, and therefore stability of the capacitor unit can be improved.

Abstract: A method for data retrieval is described. Interface circuitry of an information processing apparatus receives a request for data retrieval from a database. The database stores content sharing information in a social network. The request includes a first user identifier and a first link identifier. The processing circuitry determines whether the first user identifier and the first link identifier are associated in the database as a consequence of a previous sharing of a first article corresponding to the first link identifier using the first user identifier. Further, when the first user identifier and the first link identifier are determined to be associated, the processing circuitry searches for a first message identifier in the database. The first message identifier identifies a first message that includes information of the previous sharing of the first article. The processing circuitry then retrieves the first message according to the first message identifier.

Abstract: The present disclosure relates to polar phased-array transmitter and mobile terminals. One example mobile terminal includes a polar phased-array transmitter and an antenna array. The polar phased-array transmitter is configured to generate n amplitude signals and n phase signals, separately perform phase modulation and phase shifting on the n phase signals by using a local oscillator signal to obtain n phase modulation signals, and perform amplitude modulation and power amplification on the n phase modulation signals by using the amplitude signals to obtain n radio frequency signals. n is a natural number greater than 1. The antenna array is configured to obtain the n radio frequency signals from the polar phased-array transmitter, and transmit the n radio frequency signals.

Abstract: A rehabilitation robot comprises an upper limb rehabilitation device comprising a shoulder width adjusting device for adjusting a shoulder width of the rehabilitation robot, a right arm device and a left arm device, the right arm device and the left arm device are disposed at two sides of the shoulder width adjusting device, respectively; and a lower limb rehabilitation device connected to the upper limb rehabilitation device.

Abstract: A dual-mode oscillator and a multi-phase oscillator includes a mode switching circuit to switch between two operating modes and obtain oscillation signals having two different bands. The dual-mode oscillator also includes two transformer-coupled oscillators with each having a step-up transformer. The step-up transformer multiplies a drain voltage swing of a first metal oxide semiconductor (MOS) transistor and then injects a voltage signal to a gate of a second MOS transistor to obtain a larger gate voltage swing without increasing a supply voltage of the oscillator. The dual-mode oscillators are coupled through multi-phase coupled circuits to form a Mobius loop.

Abstract: A filter is provided, and the filter includes two mutually coupled slow-wave resonators. Each resonator includes a coplanar waveguide (CPW) transmission line, a tapered CPW transmission line, and a ground stub, and can generate a slow-wave feature to push a high-order harmonic wave of a baseband signal to a high frequency, so as to implement a wide stopband feature. In addition, a slow-wave effect is used to properly design a size of a filter, to reduce an entire area of the filter and reduce costs. Moreover, two resonators are coupled, to enhance passband performance of the filter, increase bandwidth, increase in-passband flatness, and reduce an insertion loss.

Abstract: A polar transmitter includes an amplitude path comprising an amplitude signal that corresponds to an amplitude of a vector sum of an in-phase input signal and a quadrature input signal; a phase path comprising a phase modulator configured to phase-modulate a phase signal that corresponds to the phase of the vector sum of the in-phase input signal and the quadrature input signal; a digital power amplifier (DPA) configured to amplify the phase-modulated (PM) input signal based on the amplitude signal; a tunable matching network coupled to an output of the DPA and configured to adjust a load impedance of the DPA; and a controller configured to adjust the matching network based on a look-up table with respect to amplitude and frequency information, where the look-up table indicates a plurality of optimal operation modes of the matching network for specific combinations of amplitude and frequency information.

Abstract: A dual-mode oscillator and a multi-phase oscillator includes a mode switching circuit to switch between two operating modes and obtain oscillation signals having two different bands. The dual-mode oscillator also includes two transformer-coupled oscillators with each having a step-up transformer. The step-up transformer multiplies a drain voltage swing of a first metal oxide semiconductor (MOS) transistor and then injects a voltage signal to a gate of a second MOS transistor to obtain a larger gate voltage swing without increasing a supply voltage of the oscillator. The dual-mode oscillators are coupled through multi-phase coupled circuits to form a Mobius loop.