Abstract: The present invention discloses a class of nitrogen-containing heterocyclic polymers, a class of polymer membranes and applications thereof, wherein the nitrogen-containing heterocyclic polymers comprise structural units of following general formula: A nitrogen-containing heterocycles in the class of nitrogen-containing heterocyclic polymers have large steric hindrance and electron donating groups, which are beneficial for further improving stability of materials. The class of nitrogen-containing heterocyclic polymers can be formed membranes using commonly industrial methods such as coating.

Abstract: The present application discloses a high-precision electric oil pump, which relates to the technical field of new energy vehicles. The electric oil pump includes a pump housing connected with an outer gear and an inner gear engaged with each other, the pump housing is internally connected to a fixed shaft concentrically arranged with the pump housing, the outer gear is connected to the fixed shaft and concentrically arranged with the pump housing, the fixed shaft includes a connecting section, an eccentric calibrator is provided on an outer circumferential wall of the connecting section, the eccentric calibrator and the connecting section form an eccentric assembly, the inner gear is rotated around a geometric central axis of the eccentric assembly, and the eccentric assembly is non-concentrically arranged with the pump housing.

Abstract: An information display method and apparatus, and an electronic device are provided. The method includes: receiving an instruction for displaying a page for instant messaging; displaying, in response to the instruction, a display page for the instant messaging, where the display page includes a first display area and a second display area; and displaying contact information in the first display area and displaying filtered information in the second display area, where the contact information includes an identifier of at least one contact and interaction information with the contact, the filtered information includes a filter identifier and information of a message corresponding to the filter identifier; and a message corresponding to a filter identifier is obtained by performing filtering on messages to at least one contact under a preset filtering condition corresponding to the filter identifier.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for decoding a video signal. A decoder partitions a video picture into a plurality of coding units (CUs) comprising a lossless CU. The decoder may further receive a high-level syntax. The high-level syntax may include, for example, a first flag that indicates whether a residual coding scheme is switchable.

Abstract: A method for recommending a station for a vehicle, a device, and a storage medium are provided. The method comprises: receiving, by a server, an access request from a vehicle; obtaining, based on the access request, a plurality of observation values from a plurality of stations associated with the vehicle, respectively, each observation value is based on a corresponding pre-trained recommendation model, each observation value includes factors associated with access of the vehicle to the station corresponding to the observation value; determining, an action value for the station based on the observation value and the pre-trained recommendation model for the station, the action value for the station indicates a matching degree between the access request and the station; determining a recommended station among the plurality of stations based on the action values of the plurality of stations; and sending to the vehicle an instruction of driving to the recommended station.

Abstract: A display panel and a device are provided. The display panel includes a first substrate. The first substrate includes a first metal layer and a second metal layer. The first metal layer includes first metal portions. Each of the first metal portions includes a plurality of second sub-portions arranged along a second direction. The second metal layer includes a plurality of data lines. Each of the second sub-portions is disposed between two adjacent data lines. In a top view, the display panel includes a plurality of columns of pixels or a plurality of rows of pixels. Each of two sides of each of the columns of pixels is provided with one of the data lines.

Abstract: A micro-electromechanical system (MEMS) apparatus has an array of micro-mirrors and a control circuit for rotating the micro-mirrors synchronously at a resonant frequency. The MEMS apparatus includes elements with different Coefficients of Thermal Expansion (CTE) for a die substrate coupled to the array of micro-mirrors, a die attach layer, a chip package coupled to the die substrate and a printed circuit board coupled to the chip package. The apparatus provides mechanisms for reducing changes in the resonant frequency due to changes in temperature causing stresses due to a mismatch between the CTE of the different elements. A thermoelectric cooler is used, along with the optional addition of heating resistors, additional pins to distribute stress, and the widened vias allowing room for the pins to bend and relieve stress on the chip package.

Abstract: Disclosed are a control method for focus movement on an EPG user interface and a display device. The method includes: displaying a television broadcast program on a display screen; receiving an instruction for displaying an EPG user interface, and displaying the EPG user interface on the display screen in response to the instruction; and receiving an instruction for indicating the movement of a focus along a channel arrangement direction in the EPG user interface, and in response to the instruction, determining a new position to which the focus moves in a target television channel according to the position of a pre-selected reference broadcast program, so as to control the focus to move to a target broadcast program corresponding to the new position.

Abstract: Embodiments of this application provide a blockchain-based data processing method, a device, and a medium. The method includes: sending a first channel closing message on a chain-off channel; receiving a second signature in a second state and a second channel closing message that are sent on the off-chain channel, where the second signature is obtained by signing the second channel closing message; and signing a third channel closing message to obtain a first signature in the second state, and sending the first signature. This application can ensure transaction security and improve a transaction processing capability.

Abstract: The invention discloses an air amplification type hair dryer.

Abstract: A tandem photovoltaic device and production method. The tandem photovoltaic device includes: an upper battery cell and a lower battery cell, and a tunnel junction located between the upper battery cell and the battery cell; the lower battery is a crystalline silicon cell; the tunnel junction includes: an upper crystalline silicon layer, a lower crystalline silicon layer and an intermediate layer located between the upper crystalline silicon layer and the lower crystalline silicon layer; the upper crystalline silicon layer, the lower crystalline silicon layer and the intermediate layer are in direct contact, and the doping types of the upper crystalline silicon layer and the lower crystalline silicon layer are opposite; the doping concentration of the upper crystalline silicon layer at the interface with the intermediate layer and the doping concentration of the lower crystalline silicon layer at the interface with the intermediate layer are greater than or equal to 1018 cm?3.

Abstract: A method for fabricating a film bulk acoustic resonator (FBAR) structure includes: sequentially forming a top electrode material layer, a piezoelectric layer, and a bottom electrode material layer on a substrate; patterning the bottom electrode material layer to form a bottom electrode; forming a sacrificial layer above the bottom electrode; bonding a bottom cap wafer onto the sacrificial layer; removing the substrate; patterning the top electrode material layer to form a top electrode; and removing a portion of the sacrificial layer to form a lower cavity.

Abstract: A touch substrate and a touch display device are provided. The touch substrate includes a touch region and a notch region, a first notch touch electrode extending to the notch region, the touch substrate further includes a touch-driving connection line connected to the first notch touch electrode, the plurality of second touch electrodes includes at least one second disconnection touch electrode, each of the at least one second disconnection touch electrode includes a first sub portion and a second sub portion, the touch substrate further includes a bridge line and a shielding line, the bridge line connects the first sub portion and the second sub portion, an orthographic projection of at least a part of the shielding line on the base substrate is between an orthographic projection of the bridge line on the base substrate and an orthographic projection of the touch-driving connection line on the base substrate.

Abstract: A computer-implemented method for querying data, includes performing a data query in a memory table in response to receiving a data query request initiated by a user. At least one master data block asynchronous input/output (IO) query for a hierarchical storage layer is initiated in parallel to a database system in response to that a data query result for the memory table does not satisfy a data query condition in the data query request. After receiving a query response to all master data block asynchronous IO queries, data analysis is performed on a master data block obtained through a query. A query result is determined for the data query request based on the data query result for the memory table or a data analysis result of the master data block. The data query result for the data query request is provided to the user.

Abstract: A method for video coding is provided. The method includes: setting, by an encoder, a first syntax element in a picture parameter set (PPS) specifying whether a picture corresponding to the PPS comprises more than one network abstraction layer (NAL) units and whether the more than one NAL units have a same NAL unit type; setting, by the encoder, a second syntax element in a picture header (PH) specifying whether the picture corresponding to the PH is an intra random access point (IRAP) picture or a gradual decoding refresh (GDR) picture, wherein a value of the first syntax element is set based on a value of the second syntax element being 1; and forming, by the encoder, a bitstream with the first syntax element and the second syntax element.

Abstract: Embodiments of this application relate to the electronic device field, and disclose an electronic device, a circuit board, and a manufacturing method for the circuit board, to resolve a problem that a requirement for a high through-current capability cannot be met because a via having a thick conductive layer cannot be manufactured on a circuit board connected to a high-power chip. The circuit board having a first surface includes a pad array and a first conductive hole that are both disposed on the first surface. The pad array includes at least one pad unit, and the pad unit includes at least two first power pads that are disposed adjacently. All the first power pads of the pad unit are connected to a same power network of the chip. The first conductive hole and the pad unit are disposed correspondingly.

Abstract: A wireless network can generate candidate signal configurations for physical transmissions to or from a user equipment (UE) in a radio environment. The generation of candidate signal configurations can be performed using a first neural network that is associated with the UE. These signal configurations can then be evaluated using a second neural network that is associated with the radio environment. The second neural network can be trained using measurements from previous physical transmissions in the radio environment. The trained second neural network generates a reward value that is associated with the candidate signal configurations. The first neural network is then trained using the reward values from the second neural network to produce improved candidate signal configurations. When a signal configuration that produces a suitable reward value is generated, this signal configuration can be used for the physical transmission in the radio environment.

Abstract: This disclosure provides a communication method, which includes: obtaining M pieces of channel estimation information, where an mth piece of channel estimation information in the M pieces of channel estimation information is estimation information of a channel between an mth cell node in M cell nodes and a terminal device; determining a type of a target positioning manner based on the M pieces of channel estimation information; and obtaining N pieces of channel estimation information based on the type of the target positioning manner, where the N pieces of channel estimation information are used to position the terminal device, an nth piece of channel estimation information in the N pieces of channel estimation information is estimation information of a channel between an nth cell node in N cell nodes and the terminal device, the N cell nodes are included in the M cell nodes.