Abstract: Embodiments of this application disclose a three-dimensional audio signal processing method and apparatus, to implement bit allocation of a signal. The method includes: performing spatial coding on a to-be-coded three-dimensional audio signal, to obtain a transmission channel signal and transmission channel attribute information, where the transmission channel signal includes at least one virtual speaker signal group and at least one residual signal group; and determining a bit allocation ratio of the virtual speaker signal group and a bit allocation ratio of the residual signal group based on the transmission channel attribute information.

Abstract: A non-invasive time domain reflection probe calibration method includes: using different volume ratio of ethanol and deionized water mixed solution to calculate a test target's medium weight coefficient and waveguide length of the non-invasive time domain reflection probes; using different concentrations of NaCl solutions to calibrate a waveguide geometric dimensioning of the non-invasive time domain reflection probes; preparing compacted soil samples with known different moisture contents and densities, and calibrating a correlation parameter of compacted soil samples' dielectric constant and conductivity with moisture content and density. The method not only determines the sensitivity of the test target medium of the non-invasive time domain reflection probes, but also obtains the waveguide length and geometric dimensioning of the probe, and realizes an accurate test of moisture content and density of the soil.

Abstract: Embodiments of this application disclose a three-dimensional audio signal processing method and apparatus, to implement sound field classification of a three-dimensional audio signal, to accurately identify the three-dimensional audio signal. An embodiment of this application provides a three-dimensional audio signal processing method, including: performing linear decomposition on a current frame of a three-dimensional audio signal, to obtain a linear decomposition result; obtaining, based on the linear decomposition result, a sound field classification parameter corresponding to the current frame; and determining a sound field classification result of the current frame based on the sound field classification parameter.

Abstract: A display apparatus is disclosed The display apparatus includes a display, configured to present an image interface, the image interface includes a render layer and a display layer superimposed: and a controller, configured to obtain a target video resource and one or more recommended video resource associated with the target video resource; control the display layer to present the target video resource and output audio of the target video resource; and control the render layer to present the one or more recommended video resource simultaneously.

Abstract: Provided are a mercapto group-loaded layered double hydroxide (LDH)-based magnetic composite particle, and a preparation method and use thereof. The method includes: dissolving a water-soluble divalent magnesium salt and a water-soluble trivalent aluminum salt in water to obtain a mixed salt solution; pumping ammonia water into the mixed salt solution, and performing reaction I under stirring, subjecting an obtained product to centrifugation, and washing product obtained with deionized water; mixing the product with water, ethanol, and a coupling agent KH-580 to obtain a mixture, subjecting the mixture to reaction II while stirring to obtain mercapto group-loaded LDH; mixing the mercapto group-loaded LDH with ferroferric oxide and sodium alginate, adding deionized water thereto, and stirring to obtain a homogeneous mixed solution; adding the homogeneous mixed solution into a calcium chloride solution dropwise to form a magnetic bead; and leaving the magnetic bead to harden, and then washing and drying.

Abstract: A method for controlling a robotic system includes determining a location and/or a pose of a power system component based on data received from one or more sensors, and determining a mapping of a location of a robotic system within a model of an external environment of the robotic system based on the data. The model of the external environment provides locations of objects external to the robotic system. A sequence of movements of components of the robotic system is determined to perform maintenance on the power system component based on the locations of the objects external to the robotic system and/or the location or pose of the power system component. One or more control signals are communicated to remotely control movement of the components of the robotic system based on the sequence or movements of the components to perform maintenance on the power system component.

Abstract: Embodiments of the present disclosure provide a gimbal control method. The method includes receiving a first position and a second position wherein the first position and the second position are touched positions of an operation interface of a terminal; determining a rotation angle of the gimbal based on the first position, the second position, and an attitude of the gimbal at the first position; and controlling rotation of the gimbal based on the rotation angle.

Abstract: Described herein are T cells engineered to express a chimeric antigen receptor (CAR), such as an anti-mesothelin CAR alone or in combination with a follicle-stimulating hormone receptor (FSHR) binding domain and/or a dominant negative transforming growth factor-? receptor II (dnTGF?RII) for the treatment of diseases associated with mesothelin expression. Also described are T cells engineered to express a modified T cell receptor (TCR).

Abstract: A model for predicting bioavailability of arsenic in site soil and a construction method and an application thereof, includes steps of: leveling soil after selecting a measuring point, vertically placing a measuring sleeve, fully supplying water to site soil to be measured, balancing for 20-40 min, measuring a water content in a soil volume not less than 40%, placing a piston DGT device into the measuring sleeve and pressing the device into soil, covering a top of the measuring sleeve with a wind shield, cleaning the piston DGT device after the measurement, analyzing a concentration of available arsenic by ICP-MS, and measuring available arsenic of soil; linearly fitting the available arsenic measured by a DGT method with human bioavailable arsenic measured by a UBM method, and obtaining a model for predicting bioavailability of arsenic in site soil.

Abstract: A three-dimensional audio signal coding method, apparatus, and encoder are described. The method includes, after obtaining a first correlation between a current frame of a three-dimensional audio signal and a representative virtual speaker set for a previous frame, the encoder determines whether the first correlation satisfies a reuse condition, where the first correlation is used to determine whether to reuse the representative virtual speaker set for the previous frame when the current frame is encoded. The method further encodes the current frame based on the representative virtual speaker set for the previous frame when the first correlation satisfies the reuse condition, to obtain a bitstream. A virtual speaker in the representative virtual speaker set for the previous frame is a virtual speaker used for encoding the previous frame of the three-dimensional audio signal.

Abstract: A method for scheduling and displaying three-dimensional annotations is provided, relating to the field of realistic three-dimensional visualization technology. The present disclosure covers data services, data scheduling schemes, data storage schemes, annotation avoidance schemes, and annotation efficient display schemes. Users can use this disclosure to schedule and display massive three-dimensional annotations in WebGL at high frame rates while consuming extremely low performance. It solves the problem of text inversion and non-hierarchical zooming of three-dimensional maps in traditional annotation and slicing services which can cause text to appear larger or smaller, breaking through the technical bottleneck that traditional annotation and slicing services that cannot be superposition displayed on 3D models.

Abstract: This application discloses a three-dimensional audio signal coding method and apparatus, and an encoder, and relates to the multimedia field. The method includes: After determining a first quantity of virtual speakers and a first quantity of vote values based on a current frame of a three-dimensional audio signal, a candidate virtual speaker set, and a voting round quantity, the encoder selects a second quantity of representative virtual speakers for the current frame from the first quantity of virtual speakers based on the first quantity of vote values, and further encodes the current frame based on the second quantity of representative virtual speakers for the current frame to obtain a bitstream. This achieves efficient data compression.

Abstract: This application discloses a three-dimensional audio signal coding method. After obtaining a fourth quantity of coefficients for a current frame of a three-dimensional audio signal and frequency domain feature values of the fourth quantity of coefficients, an encoder selects a third quantity of representative coefficients from the fourth quantity of coefficients based on the frequency domain feature values of the fourth quantity of coefficients, and selects a second quantity of representative virtual speakers for the current frame from a candidate virtual speaker set based on the third quantity of representative coefficients, and then encodes the current frame based on the second quantity of representative virtual speakers for the current frame to obtain a bitstream. The encoder selects the representative virtual speakers from the candidate virtual speaker set by using a small quantity of representative coefficients to represent all coefficients.

Abstract: A method of a service enabler architecture layer (SEAL) can include receiving a monitoring event subscription request for network connection status information at a network resource management server in the SEAL from a vertical application layer (VAL) server. The monitoring event subscription request can indicate a target VAL user equipment (UE), a type of the network connection status information, and a timeout period indicating an amount of time lapsed after the monitoring event subscription request was transmitted. The requested network connection status information is not transmitted after the timeout period. The network connection status information of the target VAL UE can be obtained from a wireless network system. A network connection status information response message can be transmitted from the network resource management server in the SEAL to the VAL server. The network connection status information response message can include the network connection status information of the target VAL UE.

Abstract: A three-dimensional audio signal encoding method and apparatus, and an encoder are provided, and relate to the multimedia field. The method includes: The encoder obtains a first quantity of current-frame initial vote values for a current frame of a three-dimensional audio signal. Then, the encoder obtains, based on the first quantity of current-frame initial vote values and a sixth quantity of previous-frame final vote values, a seventh quantity of current-frame final vote values that are of a seventh quantity of virtual loudspeakers and that correspond to the current frame. Further, the encoder selects a second quantity of current-frame representative virtual loudspeakers from the seventh quantity of virtual loudspeakers based on the seventh quantity of current-frame final vote values. The encoder encodes the current frame based on the second quantity of current-frame representative virtual loudspeakers, to obtain a bitstream.

Abstract: An audio encoding method and apparatus and an audio decoding method and apparatus are disclosed. During encoding of an audio channel signal of a current frame, whether a first target virtual loudspeaker and a second target virtual loudspeaker corresponding to an audio channel signal of a previous frame of the current frame meet a specified condition is first determined. When the first target virtual loudspeaker and the second target virtual loudspeaker meet the specified condition, a first encoding parameter of the audio channel signal of the current frame is determined based on a second encoding parameter of the audio channel signal of the previous frame, so that the audio channel signal of the current frame is encoded based on the first encoding parameter to obtain an encoding result, and the encoding result is written into a bitstream.

Abstract: Disclosed are an information processing method and a terminal device. The method comprises: acquiring first information, wherein the first information is information to be processed by a terminal device; calling an operation instruction in a calculation apparatus to calculate the first information so as to obtain second information; and outputting the second information. By means of the examples in the present disclosure, a calculation apparatus of a terminal device can be used to call an operation instruction to process first information, so as to output second information of a target desired by a user, thereby improving the information processing efficiency. The present technical solution has advantages of a fast computation speed and high efficiency.

Abstract: The present disclosure belongs to polymercaptan compounds and application fields thereof, and particularly relates to a polymercaptan compound and a preparation method thereof, a curing agent, a resin composition, an adhesive and a sealant. The polymercaptan compound is represented by formula (I), wherein R1, R2, R3, R5, R7 and R8 are each independently selected from one of a hydrogen atom, an alkyl group with 1-5 carbon atoms and an alkoxy group with 1-5 carbon atoms, R4 and R6 are each independently selected from an alkylene group with 1-5 carbon atoms, and m and n are each independently 0, 1, 2 or 3.

Abstract: The present invention relates to a preparation and purification method for cationic quaternary ammonium salt of sodium hyaluronate in homogeneous medium. By adding a homogeneous solvent and a sodium hyaluronate solid to a vessel, heating the vessel until the contents are dissolved to form a homogeneous system, adding an aqueous solution of 2,3-epoxypropyltrimethylammonium chloride (GTA) to the homogeneous system, then adding a base catalyst, and stirring at a preset temperature to carry out a graft reaction, a graft product is obtained wherein 2,3-epoxypropyltrimethylammonium chloride is grafted to the oxygen atom of the hydroxymethyl group of sodium hyaluronate. By using the method, a graft product wherein 2,3-epoxypropyltrimethylammonium chloride is grafted to the oxygen atom of the hydroxymethyl group of sodium hyaluronate is obtained. Addition of salts is avoided during the reaction, a grafting yield up to 0.69 is obtained, and coagulation occurred to the product is effectively solved.

Abstract: A chip packaging structure and a method for fabricating the same are provided. The chip package structure includes a conductive substrate, a dam and a metal shielding layer. The conductive substrate includes a substrate, vias and electrodes. The substrate has first and second board surfaces opposite to each other. The vias penetrate through the first board surface and the second board surface, and a part of the vias is disposed in a first die-bonding region on which a chip is to be arranged. The electrodes extend from the first board surface to the second board surface through the vias. The dam is formed on the first board surface to surround the first die-bonding region, and the dam has a height higher than that of the chip. The metal shielding layer covers the dam and a part of the first board surface that do not overlap with the electrodes.