Abstract: A photogrammetric ground control point quality evaluation method based on Monte Carlo test relates to the field of photogrammetry technology. Firstly, aerial photographs and ground control points from a survey area are obtained, the ground control points are numbered, the aerial photographs are performed with point-placing and aerial triangulation densification. Secondly, a Monte Carlo test experiment is designed, a certain number of the ground control points are selected as control points with the rest as check points, ensuring each ground control point as the control point a certain number of times, and average errors of the ground control points are calculated. Thirdly, average values of the average errors of the ground control points are calculated, standard deviations of the average errors of the ground control points are calculated. Finally, a quality coefficient Q of each ground control point is calculated and evaluated according to quality evaluation standards.

Abstract: A multi-robot collaborative planning method for machining a large capsule member of a Spacecraft is described. The method comprises: first, planning the number of instances of rotational displacement of a capsule, and the angle of each rotation; then, planning a multi-robot station layout and station switching strategy; and finally, when the position of the capsule and robot stations are fixed, planning a multi-robot machining task time sequence. The machining process for a large capsule is efficiently planned by selecting optimal rotation schemes and robot station positions, enhancing the rigidity of robot collaboration. This planning also streamlines the machining timeline, making the multi-robot task more compact and reducing idle time, thus boosting overall machining efficiency.

Abstract: A ventilation structure of a core chamber of a turbofan engine having a large bypass ratio, said structure comprising: an outer bypass wall surface (1), a core chamber wall surface (4) and a core casing (7). An outer bypass flow channel (2) is formed between the outer bypass wall surface (1) and the core chamber wall surface (4). A core chamber (6) is formed between the core chamber wall surface (4) and the core casing (7). An air intake annular cavity (3) is provided in the core casing and is located at the upstream position. The air intake annular cavity (3) is used to put the outer bypass flow channel (2) and the core chamber (6) in communication. An exhaust grille (5) is further provided on the core chamber wall surface (4) and is located at a tail position.

Abstract: The present disclosure provides a polyzirconium coagulant obtained by performing a controllable hydrolytic polymerization reaction on a simple zirconium salt. The polyzirconium coagulant has a good coagulation performance when removing turbidity, organic matter, phosphate, and fluoride from water body. The coagulation effluent has a low concentration of residual metal and a mild change of pH. At the same dose, compared with a simple zirconium salt and polymerized zirconium chloride with a low polymerization degree, the polyzirconium coagulant prepared by the present disclosure has a wider workable pH and dose range. Besides, compared with other metal salt coagulants, the coagulant prepared by the present disclosure has a better decontamination performance. In addition, by using the polyzirconium coagulant prepared by the present disclosure, the floc has a large size and is rapid to settle. The residual zirconium concentration is low, and pollutant removal efficiency is high.

Abstract: Disclosed are a deer-derived specific peptide and a detection method therefor; by screening through a large number of experiments, a ratio of relative contents of two deer-derived peptides is determined, and a graph is drawn by using a proportion of a deer antler gelatin in a mixed gelatin as an abscissa and using a value of Apeptide 1/Apeptide 2 as an ordinate; the proportion of the deer antler gelatin is linear with Apeptide 1/Apeptide 2 as a standard curve equation to distinguish a deer hide gelatin from the deer antler gelatin; the method can be used for distinguishing the deer antler gelatin from the deer hide gelatin, and controlling the quality; a defect in the prior art that the deer antler gelatin and the deer hide gelatin are difficult to distinguish in appearance, and are also difficult to distinguish by using a specific peptide fragment, is solved.

Abstract: An active fault tolerance and fault mitigation system based on steer-by-wire dual motors and a mode switching control method thereof are provided. The system includes an acquisition unit, a steering wheel assembly, an ECU control module, a front wheel steering assembly, and a fault tolerance controller (18) which are sequentially connected. The acquisition unit transmits an acquired vehicle signal to the ECU control module, and then a corresponding compensation strategy is selected by means of a fault tolerance control strategy unit, a yaw rate calculation unit, a stability control unit, and a dual-motor compensation unit to act on a rack and pinion mechanism (15). The system and method can perform switching in an active fault tolerance and fault mitigation mode to achieve optimal control of the real-time performance of a vehicle, thereby ensuring the driving performance and higher performance of the vehicle in a field fault condition.

Abstract: An electric truck steer-by-wire system and a net-work uncertainty control method therefor. Said system comprises: a master control electric power module (14), a slave control electric power module (18), a road-sensing motor module (4), a steering wheel (1), an upper steering column (3), a lower steering column (10), a rack and pinion steering mechanism (12), wheels (13), a first steering angle sensor (2), a second steering angle sensor (11), a steering domain controller (8), and a vehicle-mounted CAN network (9). By means of the design of the master and slave controllers and actuating mechanisms, the system combines the advantages of steering angle tracking, torque tracking and current tracking, there-by satisfying the steering response requirements and power requirements of the electric truck, and further enhancing the robustness and fault-tolerant performance of the system under a random network time lag.

Abstract: A compound represented by formula (I) and a preparation method thereof, and a pharmaceutically acceptable salt thereof, a metabolic precursor thereof, a metabolite thereof, an isomer thereof or a prodrug thereof; experiments show that the indole alkaloid not only promotes axon growth of peripheral sensory neurons, improves the nerve conduction velocity and anesthesia symptom of diabetic rats, but also promotes healing of foot ulcer wounds of diabetic rats, thus having good therapeutic effects on diabetic complication peripheral neuropathy and diabetic feet; they als show that the indole alkaloid also obviously reduces a degree of pulmonary fibrosis induced by bleomycin in mice, and plays a role in protecting lung tissues.

Abstract: A user matching and power distribution methods for a MIMO-NOMA downlink communication system is provided. The user matching method includes: dividing all users into a strong user group and a weak user group according to a channel gain sorting result; and sequentially selecting a user in the strong user group, calculating a correlation coefficient between the user and each user in the weak user group, selecting a weak user with the highest correlation coefficient as a weak user in a cluster where the strong user is located, and excluding matched users from respective user groups, until the matching between all strong users and weak users are completed. The present invention enables weak users in a cluster to experience less inter-cluster interference in scenarios where the channel correlation between users is relatively low, thereby improving the total throughput of the communication system.

Abstract: A state monitoring method for vibration drilling of a stack structure material is provided. A load power and a torque value of a drilling spindle is monitored during machining. Drilling state are divided according to a machining material of a drill. According to a data of a test library, reference thresholds of two monitoring objects for judging the change of the drilling state are set to achieve the state monitoring for the drilling process. The method monitors the machining process through the monitoring module in the machining system.

Abstract: The present disclosure discloses a microscopic non-destructive measurement method of a microstructure linewidth based on a translation difference, based on a conventional microscopic imaging method, a high-precision displacement platform is used to move a to-be-measured sample, one microscopic image of the sample is acquired before and after the displacement separately, subtraction is performed on the two image to obtain a differential image, a light intensity distribution function of the differential image is derived, data fitting is performed on the differential image, and a high-precision sample linewidth measurement result is obtained by using the characteristic of a high differential pulse positioning resolution.

Abstract: A multi-arm forming device for space on-orbit composite braiding is provided. Through the rotary movement of a combination of circularly arranged mechanical arm-type laying apparatuses relative to a mold, a plurality of hot press laying heads are controlled together to implement high-efficiency and high-freedom winding and braiding formation of a composite member. The retraction and expansion deformation of the gasbag mold is achieved by inflating and deflating based on design, and the overall device is lightened by switching its structural volume in an operating/non-operating state, thereby achieving the purpose of facilitating the lift-off of rockets and the demolding, repair and weight reduction of winding and braiding structural members for operation in space. Additionally, gas in a gasbag can be used as emergency kinetic energy for the movement and attitude adjustment of the overall device in space. High-quality and efficient winding and braiding formation of composites in space are achieved ultimately.

Abstract: A circuit for post-binding testing of a 2.5D chiplet includes an interposer-dedicated TAP controller, an interposer test interface circuit and a chiplet test output control circuit. A chiplet test configuration register and its corresponding instructions are newly added for the interposer-dedicated TAP controller. The interposer test interface circuit uses an output control signal of the chiplet test configuration register to select the opening or closing of a test signal channel between an interposer and a chiplet. The chiplet test output control circuit uses the chiplet test configuration register to output a control signal for control of a test data output of the chiplet on the interposer.

Abstract: A sand dune extraction method based on fusion of positive-negative terrains and light shading includes: obtaining an original digital elevation model of a study region; using a neighborhood analysis method to process the original digital elevation model of the study region, thereby extracting a positive terrain region and a negative terrain region of the study region; using a lighting shading method to perform six directional lighting simulation calculations on each pixel of the original digital elevation model of the study region to obtain a lighting shading map, and extracting a lighting region and a shadow region of the study region from the lighting shading map; using an embedding method to fuse the positive terrain region and the negative terrain region with the lighting region and the shadow region. The sand dune extraction method is a method for remote sensing monitoring and governance of desertification regions.

Abstract: The present invention provides a method and an apparatus for detecting unmanned aerial vehicle conflict based on an airspace digital raster, and a storage medium, wherein the method comprises: establishing an airspace discrete subdivision raster model; constructing a conversion relationship between a raster code rule and longitude and latitude coordinates and grid codes; establishing an unmanned aerial vehicle safety protection area, and performing gridding expression on the unmanned aerial vehicle in the airspace; establishing a coordinate system to convert the grid codes of the unmanned aerial vehicle into coordinates; calculating the Minkowski difference set of two blocks using the GJK algorithm; and determining whether the unmanned aerial vehicle conflicts or not according to the Minkowski difference set.

Abstract: Disclosed are a three-dimensional modeling system and modeling method based on multimodal fusion. The method includes: separately collecting feedback data of an electroencephalogram sensor, an electromyography sensor, an eye movement sensor, a gesture sensor, and a voice sensor, conducting multimodal fusion on the feedback data, obtaining multimodal-fused model data, matching the model data with a database instruction, obtaining and analyzing an instruction set, obtaining and identifying a relevant modeling parameter, obtaining a modeling method, automatically conducting modeling according to the modeling method, and obtaining a visual entity model.

Abstract: A method for producing an electrochemiluminescence nanoprobe according to an embodiment includes: a Pdots nanoparticle synthesis step of synthesizing a Pdots nanoparticle by polymerizing a conjugated polymer and a copolymer molecule; and a Pdots nanoparticle modification step of modifying a resulting Pdots nanoparticle using an oligonucleotide chain modified with a quencher molecule.

Abstract: A reconfigurable MBIST method based on an adaptive March algorithm is provided. The reconfigurable MBIST method automatically reconfigures different algorithm circuits according to external environment and user instructions to satisfy detection requirements for different faults. The provided adaptive March algorithm is capable of adaptively reorganizing algorithms with different complexities, such that dynamic adjustments can be executed between time complexities of the algorithm and fault coverage rates to achieve a good balance, and the static fault coverage rates are high, thereby effectively improving dynamic fault coverage rates.

Abstract: A photoelectric computing unit, a photoelectric computing array and a photoelectric computing method. The photoelectric computing unit includes a semiconductor multifunctional region structure, which includes at least one carrier control region, at least one coupling region, and at least one photon-generated carrier collection region and readout region.

Abstract: A method for producing an electrochemiluminescence nanoprobe according to an embodiment includes: a hot exciton nanoparticle synthesis step of polymerizing a hot exciton organic luminescent molecule and a copolymer molecule to synthesize hot exciton nanoparticles; and a hot exciton nanoparticle modification step of modifying the obtained hot exciton nanoparticles with an oligonucleotide chain modified with a quencher molecule to obtain modified hot exciton nanoparticles.