Abstract: A long-span corridor comprising two sets of floor cantilevered inclined trusses combined with suspension cable bearing is provided, including floor cantilevered inclined trusses, floor double-arch trusses, radial circumferential connecting structures, V-shaped support structures, corridor truss structures and suspension cable bearing structures; two trapezoidal tapering planar inclined trusses of each set of floor cantilevered inclined trusses are connected to each other through a combination of the floor double-arch trusses and through the radial circumferential connecting structures to form a single-set system; and the corridor truss structures are arranged between the two single-set systems.

Abstract: The present disclosure provides an impedance device and a system for simulating an impact of a head on a vibration of a vibration unit. The impedance device may include a mass part, an elastic part, and a fixing part. The mass part is connected to the fixing part through the elastic part. The fixing part is a hollow structure, the fixing part includes an opening. The elastic part is located at the opening and is connected to the fixing part. The elastic part forms a cavity with the fixing part. An elastic coefficient of the elastic part of a vibration direction in which the mass part vibrates relative to the fixing part in a range of 600 N/m~5000 N/m.

Abstract: A repeat transmission processing method includes obtaining, by a terminal, first information; determining, by the terminal, at least one transmission gap in a first repeat transmission process according to the first information; and performing, by the terminal, a first operation in a transmission gap.

Abstract: A video encoding method, an electronic device, and a storage medium are provided. The method includes: obtaining a first playback feature of a first video within a preset number of time windows in response to a preset trigger; determining a first temporal feature according to the first playback feature and determining a first image quality weight and a first smoothness weight according to the first temporal feature; constructing a first encoding evaluation model according to the first image quality weight and the first smoothness weight; inputting candidate encoding parameter combinations into the first encoding evaluation model to obtain a first encoding evaluation value; determining a first encoding parameter combination from the candidate encoding parameter combinations according to the first encoding evaluation value; and encoding the first video according to the first encoding parameter combination.

Abstract: Provided are a cyclic 2-aminopyrimidine compound having a structure as shown in formula (I), or a pharmaceutically acceptable salt, stereoisomer or prodrug molecule thereof, and a use thereof. The compound can effectively inhibit the activity of EGFR protein kinase drug-resistant mutants (such as EGFRT790M and EGFR19del/T790M/C797S), and can overcome the clinical drug resistance of patients suffering from tumors such as non-small cell lung cancer induced by existing third-generation selective EGFRT790M small molecule inhibitors Osimertinib (AZD9291), Olmutinib (HM6171), Rociletinib (CO-1686) and the like.

Abstract: The present disclosure provides a pair of eyeglasses, comprising: a sound-producing device including a diaphragm and a magnetic circuit assembly; an eyeglass temple configured to accommodate the sound-producing device, and an eyeglass rim. A front cavity is formed at a side of the diaphragm away from the magnetic circuit assembly, and a back cavity is formed at a side of the diaphragm facing the magnetic circuit assembly. The eyeglass temple is provided with a sound outlet hole and a pressure relief hole, the sound outlet hole is in communication with the back cavity, and the pressure relief hole is in communication with the front cavity. In a wearing state, the sound outlet hole is closer to an ear canal opening of a user than the pressure relief hole, and an opening area of the sound outlet hole is greater than an opening area of the pressure relief hole.

Abstract: The embodiment of the present disclosure provides a video frame prediction method and device.

Abstract: Disclosed are a polyurethane-polyurea aqueous dispersion, and a preparation method therefor and a use thereof. The aqueous dispersion comprises a polyurethane-polyurea dispersed therein, containing a terminal carboxyl group, a sulfonate group, and a carboxylate group, and having a specific theoretical molecular weight, wherein the content of the carboxylate group is 1.49-11.9 mmol/100 g, the content of the sulfonate group is 0.26-7.9 mmol/100 g, the content of the terminal carboxyl group is 0.5-3.7 mmol/100 g, the molecular weight is 60,000-390,000, and the specific theoretical molecular weight is a theoretical design molecular weight and is obtained by means of an end-group calculation method. The polyurethane-polyurea aqueous dispersion avoids the problems of glove cracking and pinholes in glove production and improves production stability.

Abstract: Provided are an electric motor having an adjustable magnetic field, and a vehicle. An excitation ring assembly of the electric motor includes an excitation ring having an outer ring wall and an inner ring wall and an excitation winding. An excitation rotor of the electric motor includes first permanent magnets and a rotor core provided with first and second magnetic pole forming sections that are circumferentially arranged alternately, a first magnetic pole cooperating portion corresponding to the first magnetic pole forming section, and a second magnetic pole cooperating portion corresponding to the second magnetic pole forming section. The first permanent magnets correspond to the first and second magnetic pole forming sections. A second air gap is defined by the outer ring wall and the first magnetic pole cooperating portion and a third air gap is defined by the inner ring wall and the second magnetic pole cooperating portion.

Abstract: Disclosed are a backlight module and a display apparatus. The backlight module includes: a backboard and a diffusion plate arranged opposite to each other, and a middle bezel arranged along an edge of the backboard and abutting against the diffusion plate; and a plurality of light-emitting devices on a side of the backboard facing the diffusion plate. The light-emitting device of the plurality of light-emitting devices located on an outermost side is a first light-emitting device, and in a first direction of the middle bezel pointing toward the first light-emitting device, the light-emitting device nearest the first light-emitting device is a second light-emitting device.

Abstract: The present application relates to a real-time simulation and model prediction method for wire arc additive manufacturing based on event sequences, including: in the real-time process of wire arc additive manufacturing of metal structures, activating elements in real time through event sequences and guiding the heat source in real time; setting heat source model parameters, thermal simulation parameters and mechanical simulation parameters to perform real-time thermal-mechanical coupling simulation of wire arc additive manufacturing; establishing a simplified calculation theoretical model of the residual stress field and correcting the calculation model prediction.

Abstract: A display substrate and a display apparatus are provided. The display substrate includes a base substrate; sub-pixels arranged in an array and on the base substrate; data line groups on the base substrate; each data line group includes data lines, each of which is connected to one column of sub-pixels; data selectors on the base substrate and connected to the data line groups in a one-to-one correspondence; data lines in a same data line group are connected to a same data selector; and data selection signal lines, wherein different data selection signal lines output different data selection signals; and different data lines connected to a same data selector correspond to different data selection signal lines, respectively. The display panel provided may effectively reduce the resistance on the data selection signal lines, thereby reducing the delay of the data selection signals and further improving the charging uniformity of sub-pixels.

Abstract: The embodiments of the present disclosure provide an acoustic output device including a sound emitting part. The sound emitting part may include at least one acoustic driver, and a first chamber, and a second chamber acoustically coupled to the at least one acoustic driver. The first chamber may have at least one first sound outlet, and the second chamber has at least one second sound outlet. The at least one acoustic driver may radiate sounds to an external environment through the at least one first sound outlet and the at least one second sound outlet. In at least a portion of a low-frequency range, the sounds emitted by the sound emitting part towards a far field may exhibit directivity.

Abstract: An electric riding lawn mower includes a seat for a user to ride, a main frame to support the seat, a power output assembly including a mowing element to output power to realize mowing function and a first motor to drive the mowing element, a walking assembly to at least drive the electric riding lawn mower to travel in the direction of a first straight line on the ground and a second motor to drive the walking assembly, and a power supply device to power the electric riding lawn mower with a first battery pack, which includes a first battery pack housing and a plurality of battery cells disposed therein. The power supply device is mounted to the main frame. At least one of the first battery packs of the power supply device forms a pluggable connection with the main frame. The battery cells are lithium batteries.

Abstract: Provided is a light-emitting module, including: a first substrate; a plurality of first light-emitting units; a second substrate, having a plurality of apertures corresponding to the plurality of first light-emitting units; and a plurality of second light-emitting units, disposed in a region, where the plurality of apertures are not formed, in a side, away from the first substrate, of the second substrate. An orthographic projection of each aperture on the first substrate covers an orthographic projection of one of the first light-emitting units on the first substrate. Light emitted from the plurality of first light-emitting units is irradiated through the plurality of apertures toward a target direction. An orthographic projection of each second light-emitting unit on the first substrate is not overlapped with the orthographic projection of the first light-emitting unit on the first substrate. Light emitted from the plurality of second light-emitting units is irradiated toward the target direction.

Abstract: A display substrate and a display device. The display substrate includes a base substrate, a light-shielding layer, a gate layer and a source-drain metal layer; the base substrate includes a display area and a peripheral area; the light-shielding layer is located on the base substrate; the gate layer is at a side of the light-shielding layer away from the base substrate; and the source-drain metal layer is at a side of the gate layer away from the light-shielding layer. The display area includes signal lines, and the peripheral area includes a lead wire region and a bonding region; the lead wire region includes lead wires connected to the signal lines, and extend, in the lead wire area, to the bonding area in a first direction; and the lead wires are distributed in the light-shielding layer, the gate layer and the source-drain metal layer.

Abstract: An array substrate includes: a first substrate (10), including a plurality of sub-pixel regions (101) arranged in an array along a row direction (X) and a column direction (Y); a pixel circuit layer, including a plurality of sub-pixel circuits; and a planarization layer (17), provided with a first via hole (170) located in the sub-pixel regions (101), and includes at least one pattern portion (171), the pattern portion (171) includes a plurality of pattern units (171a) arranged in an array along the row direction (X) and the column direction (Y); where the pattern unit (171a) further includes a second bump (1712) located within a central area surrounded by each of the first bumps (1710), and the spacing groove (1711) on a same side of the first bump (1710) and the second bump (1712) is arranged in a non-straight shape.

Abstract: Disclosed is a device and method for reducing combustion cone fallout propensity and stabilizing loss of tobacco from ends. Firstly, the right installation positioning hole is moved rightwards to extend the distance of the separation zone. Meanwhile, the vibration mechanism is redesigned so that it is enabled to move toward the lower right of the material groove body. Therefore, there is enough space to install the separation screen in the separation zone. Finally, the separation screen is installed. The tobacco scraps are separated out when they pass through the separation screen, thus reducing cone dropping when the cigarette burns, stabilizing the amount of dropping tobacco at the end, and improving the smoking experience and recognition of customers with regard to cigarette products.

Abstract: Provided are a method for generating an installed capacity of a power system, a device, a medium, and a product. The method includes: acquiring an expected upper limit of a one-time investment coefficient and an expected lower limit of a new energy consumption rate for a target power system; determining an installed capacity of the target power system by using a power system installed capacity generation model. The installed capacity is defined by an installed capacity upper bound and an installed capacity lower bound, and the power system installed capacity generation model is obtained by training a Convolutional Neural Network (CNN)-Bidirectional Long Short-Term Memory (BiLSTM)-Bidirectional Gated Recurrent Unit (BiGRU) neural network model using a training dataset. The training dataset is established using a multi-objective coronavirus disease optimization algorithm and a wave search algorithm.

Abstract: Provided are a method for regulating a wind-photovoltaic-storage power station based on electricity, green certificate, and carbon price prediction, a device, a medium, and a product.