Abstract: A multi-objective optimized evaluation method of anti-seismic performance of a slope reinforced by a pile-anchor system is provided. The method includes: training an initial three-dimensional slope numerical calculation model to obtain an target three-dimensional slope numerical calculation model; determining numerical values to be imported into the target three-dimensional slope numerical calculation model according to deformation differences, to obtain a model analysis result; obtaining a simulation operation result according to a reinforcement scheme working condition table of the pile-anchor system; based on the model analysis result and the simulation operation result, evaluating anti-seismic reinforcing performance of the pile-anchor system to obtain comprehensive evaluation values, and then optimizing and evaluating the reinforcement schemes of an overall slope to be reinforced.

Abstract: Disclosed is a mapping method of landslide threat range based on equivalent friction coefficient and trend analysis, which includes the following steps: obtaining physical parameters of a landslide, and obtaining a volume of the landslide according to an area in the physical parameters; selecting relevant parameters based on a rock type in the physical parameters, and obtaining the equivalent friction coefficient according to the relevant parameters and the volume; obtaining a landslide runout distance according to the equivalent friction coefficient, determining coordinate points of a hyperbola and a front edge boundary range according to the landslide runout distance, and performing a hyperbolic fitting on two side boundaries of the landslide according to the coordinate points to obtain a side boundary range; generating the landslide threat range based on the front edge boundary range and the side boundary range.

Abstract: A sample mounting device for direct tensile test of rock mass is provided, which includes a first positioning stage, a second positioning stage, a first support piece, a second support piece, and a screw drive mechanism. The second positioning stage is arranged above the first positioning stage and capable of moving up and down, and cushion blocks for gluing with the rock mass are coaxially and detachably arranged at opposite ends of the first positioning stage and the second positioning stage, and a rock mass mounting area is formed between the two cushion blocks. A screw of the screw drive mechanism includes a first thread segment and a second thread segment with opposite thread directions. The first support piece is connected with the first thread segment through a nut seat, and the second support piece is connected with the second thread segment through a nut seat.

Abstract: A system comprises a primary device, the primary device pre-establishes communication connections to a plurality of secondary devices. The method comprising: receiving, by the primary device, a to-be-processed event; recognizing, by the primary device, an event type and event information of the to-be-processed event; obtaining, by the primary device, device information of each of the plurality of secondary devices; obtaining, by the primary device, a device filtering condition corresponding to the event type; determining, by the primary device based on the device information of each of the plurality of secondary devices, a first secondary device that meets the device filtering condition; and sending, by the primary device, the event type and the event information to the first secondary device when the primary device determines that a data type of the event information is a data type supported by the first secondary device.

Abstract: A physical simulation test system for studying a tunnel structure under active fault movements includes: a simulation box, a loading frame, a first loading mechanism, a second loading mechanism and a third loading mechanism. The simulation box is a hollow and open box structure including a first box and a second box that can slide relative to each other. The loading frame includes a crossbeam, a first bracket, a second bracket, and a third bracket. The simulation box is located below the crossbeam, between the first bracket and the second bracket, and in front of the third bracket. The first loading mechanism is disposed on the first bracket, the second loading mechanism is located below the first box, and the third loading mechanism is disposed on the third bracket. The three loading mechanisms are configured to provide loading forces in three different directions to the first box.

Abstract: Some embodiments of the present disclosure provide an anti-splash structure and a humidification apparatus. The anti-splash structure is provided between a mist outlet (111) and a water storage reservoir (101) of the humidification apparatus, and includes a mist-guiding passage (1) configured to connect the mist outlet (111) and the water storage reservoir (101); a water blocking structure is provided in the mist-guiding passage (1); and the water blocking structure is located at a position opposite to the mist outlet (111) and an opening of the water storage reservoir (101).

Abstract: A circuit path (115) conveys energy from a feed source (120) to an antenna element (110). An intermediate structure (125) is disposed in the circuit path (115) between the feed source (120) and the antenna element (110). The intermediate structure (125) modifies a phase of first wireless signals (191) such as signals emitted in a first direction from the antenna element (110) towards the feed source (120). The intermediate structure (125) may modify a phase of a reflection of the first wireless signals emitted in a second direction toward the antenna, the second direction opposite the first direction. Modifying the phase of the emitted and reflected wireless signal provides an overall stronger output signal from the antenna. For example, the phase modified reflected wireless signal combines with an original transmitted wireless signal from the antenna to produce a strong output signal with across a wide bandwidth.

Abstract: A communication method includes: a first device determines a first channel access manner based on network status information, wherein the first channel access manner is a carrier sense multiple access with collision avoidance (CSMA/CA) channel access manner or an intelligent channel access manner, and the intelligent channel access manner is a manner of accessing a channel based on a channel access decision obtained by a neural network; and sends data on a channel in the first channel access manner. The first device selects the first channel access manner based on the network status information, and sends the data in the first channel access manner.

Abstract: The technology of this application relates to a communication method and a related apparatus. The method in embodiments of this application includes receiving, by a first device, first indication information from a second device, where the first indication information indicates the first device to enable or disable an intelligent channel access function, and the intelligent channel access function is a function of accessing a channel based on a channel access decision output by a neural network. The method further includes enabling or disabling, by the first device, the intelligent channel access function based on the first indication information. It can be learned that the first device may enable or disable the intelligent channel access function based on the first indication information, to enrich channel access functions supported by the first device. This helps avoid a communication collision between the first device and another device, to improve communication quality of the first device.

Abstract: A data streaming method includes determining M key frames in a target group of pictures GOP, where the target GOP includes L frames, M is an integer greater than 0, and L is an integer greater than 2. Scalable encoding is performed on source data of each of the M key frames to generate M pieces of base layer data and N pieces of extension layer data, where data quality of extension layer data corresponding to each key frame is higher than data quality of base layer data corresponding to each key frame, and N is an integer greater than or equal to M. Differential protection is performed on the base layer data and the extension layer data of each key frame to obtain first encoded data of the M key frames.

Abstract: Embodiments of the present application relate to the field of cooking devices. Disclosed are a lid body assembly and a cooking apparatus. The lid body assembly comprises a pot lid, an air blowing apparatus, and a check valve. The pot lid is used for covering a pot body having a cooking cavity to open and close the cooking cavity. The air blowing apparatus is arranged in the pot lid to blow air into the cooking cavity. The check valve is used for allowing airflow to flow from the air blowing apparatus to the cooking cavity in one direction.

Abstract: A brake dust filtering apparatus (100), comprising: a base (10) which is provided with multiple first through holes (101); a scribing sheet (20) which is provided with multiple second through holes (201) and can be slidably connected to the base (10); a filter screen (30) which is disposed on the side of the base (10) close to a brake caliper (200) and covers the first through holes (101); and a drive member (40) which is used for driving the scribing sheet (20) to slide with respect to the base (10), so as to form an off state in which each of the first through holes (101) and each of the second through holes (201) are staggered and an on state that the multiple first through holes (101) at least partially overlap the multiple second through holes (201). Further disclosed is a vehicle.

Abstract: The present disclosure provides a multi-scale three-dimensional (3D) engineering geological model construction system and method. A regional geological model of a target region, a site geological model of each engineering site, and a drilling geological model of each drilling well are constructed. The geological model of each drilling well is superimposed to the site geological model of the corresponding engineering site in the way of step-by-step superimposition, and the site geological model of each engineering site fused with the drilling geological model is superimposed to the regional geological model of the target region. Thus, multi-scale geological model fusion of drilling well, engineering site, and regional mountain is realized.

Abstract: The communication system as described herein includes an input feed, a source, and a tuner device. The input feed receives an input signal. The source emits a wireless signal based on the received input signal. The tuner device is disposed adjacent to the source emitting the wireless signal. The tuner device receives the wireless signal emitted from the source and produces a wireless output. In one embodiment, the tunable device includes multiple individually controlled window regions to control a radiation pattern of the wireless output transmitted from the tuner device.

Abstract: The present disclosure provides a multi-scale three-dimensional (3D) engineering geological model construction system and method. A regional geological model of a target region, a site geological model of each engineering site, and a drilling geological model of each drilling well are constructed. The geological model of each drilling well is superimposed to the site geological model of the corresponding engineering site in the way of step-by-step superimposition, and the site geological model of each engineering site fused with the drilling geological model is superimposed to the regional geological model of the target region. Thus, multi-scale geological model fusion of drilling well, engineering site, and regional mountain is realized.

Abstract: An adjustable device for railway to cross active faults is provided to fix a rail and a sleeper, including: a fastener mounting base, disposed between the rail and sleeper; clamping pipes, disposed between the fastener mounting base and the sleeper, the sleeper is provided with a through groove, and the clamping pipes are detachably fixed inside the through groove; control parts, disposed on an inner wall of the clamping pipes, each of the control parts is configured to detect lateral pressures between the fastener mounting base and corresponding one of the clamping pipes, thereby to separate the corresponding one of the clamping pipes from the through groove, the device ensures that the rail will not produce bending deformations after the lateral dislocation of the bottom layer during earthquake events, and ensure that a train or rail repair vehicle can pass at a low speed after earthquake.

Abstract: Disclosed is a pressure-bearing device for simulating an excavation unloading test of a high-energy-storage rock mass. The pressure-bearing device comprises pressure-bearing blocks, a casing pipe and sealing rings, wherein the two pressure-bearing blocks are respectively arranged at two ends of a to-be-tested rock mass; the casing pipe can be arranged outside the to-be-tested rock mass and the pressure-bearing blocks in a sleeving mode and is attached to the to-be-tested rock mass and the pressure-bearing blocks; and the sealing rings are arranged outside the pressure-bearing blocks and the casing pipe in a sleeving mode, so that the sealing rings can be tightly pressed on the casing pipe and the pressure-bearing blocks through fastening elements. Further disclosed is a sealing method for simulating an excavation unloading test of a high-energy-storage rock mass.

Abstract: Disclosed is a tunnel protection structure suitable for active fault areas and high ground stress areas, and relates to the technical field of tunnel engineering construction. The tunnel protection structure comprises at least one protection unit, wherein a plurality of protection units are sequentially connected and distributed along the axial direction of a tunnel, and the protection units comprise a radial protection ring and two axial protection rings which are fixedly arranged between a lining structure and surrounding rock and are distributed along the axial direction of the tunnel; the radial protection ring comprises a plurality of radial buffer energy consumption layers which are sequentially sleeved along the radial direction of the tunnel; and the axial protection ring comprises a plurality of axial buffer energy consumption layers which are sequentially and fixedly connected along the axial direction of the tunnel.

Abstract: Disclosed is a pressure-bearing device for simulating an excavation unloading test of a high-energy-storage rock mass. The pressure-bearing device comprises pressure-bearing blocks, a casing pipe and sealing rings, wherein the two pressure-bearing blocks are respectively arranged at two ends of a to-be-tested rock mass; the casing pipe can be arranged outside the to-be-tested rock mass and the pressure-bearing blocks in a sleeving mode and is attached to the to-be-tested rock mass and the pressure-bearing blocks; and the sealing rings are arranged outside the pressure-bearing blocks and the casing pipe in a sleeving mode, so that the sealing rings can be tightly pressed on the casing pipe and the pressure-bearing blocks through fastening elements. Further disclosed is a sealing method for simulating an excavation unloading test of a high-energy-storage rock mass.

Abstract: Embodiments of the present disclosure provide a data migration method and device, wherein the data migration method comprises: acquiring a migration request for a source database, creating a snapshot of to-be-migrated data in the source database and migrating the snapshot to a target database, reading a data migration log stored in a primary replica database of the source database and synchronizing the data migration log into the target database, and configuring a route for a target primary replica database of the target database according to routing rules of the primary replica database.