38results about How to "Fix performance issues" patented technology

The invention provides a satellite constellation simulation method based on a native set model. The satellite constellation simulation method comprises the following steps that a current view angle rotation matrix is obtained through calculation according to the current moment; and calculating a satellite orbit. At the T0 moment of each circle, calculating satellite coordinate points contained at the starting and ending moments of the current circle to form a satellite orbit, calculating the satellite coordinate positions by introducing a front-end library, when the next circle arrives, calculating the satellite orbit of the current circle again at the T0 moment of the circle, and updating and displaying the satellite orbit; introducing a front-end library to calculate a satellite coordinate position; the satellite orbit and the view angle keep the same view angle rotation matrix for rotation transformation. According to the method, the algorithm efficiency is greatly improved, the interaction process of the front end and the rear end is saved, the calculation and display efficiency of the satellite orbit is improved and the rendering performance is improved on the premise that the display effect of satellite simulation is not influenced, and the native model supports dynamic updating, so that the geometrical shape and the material can be modified during operation, and re-creation is not needed.

The invention relates to a phase shift mask substrate and a dynamic magnetron sputtering preparation method thereof, a MoSi-based gradient film layer is continuously and dynamically deposited on the substrate, and the method comprises the following steps: carrying out first-stage deposition on the substrate by adopting a molybdenum-silicon alloy target so as to form a transition layer; carrying out second-stage deposition on the transition layer to form a main body functional layer through deposition; and third-stage deposition is carried out on the main body functional layer to form a surface modification layer through deposition, and the MoSi-based gradient film layer is obtained. The invention provides a one-step sputtering deposition method capable of dynamically and accurately regulating and controlling, so that the inherent contradiction between the performance and the stress of a single-layer uniform film is fundamentally solved, and the complexity and the uncertainty of a traditional multi-step process are avoided.

The invention provides a fuel cell, a membrane electrode assembly and a preparation method thereof. The electrode assembly comprises an outer frame and an inner frame, the outer frame is arranged on the outer side of the gas diffusion layer, the outer frame and the gas diffusion layer are arranged at an interval, and the outer frame comprises a first outer frame and a second outer frame which clamp the edge of the catalyst layer coating film; the inner frame is arranged between the outer frame and the gas diffusion layer and comprises a first inner frame and a second inner frame which are positioned on two sides of the proton exchange membrane; the side faces, facing the gas diffusion layer, of the first outer frame and the second outer frame are each provided with a first recess, the side faces, facing the outer frame, of the two sub-layers are each provided with a second recess, one parts of the first inner frame and the second inner frame are located in the first recesses, and the other parts are located in the second recesses. The contact surface of the catalyst layer coating film and the outer frame and the contact surface of the gas diffusion layer and the inner frame are both glued, the catalyst layer coating film abuts against the contact surface of the inner frame, the membrane electrode assembly can effectively overcome the transverse stress, and the durability of the membrane electrode sealing frame is remarkably enhanced.

The utility model belongs to encoder detection technical field discloses a kind of position adjustment function's encoder detection support, including base, base upper end is fixedly connected with pad, pad upper end is fixedly connected with receiving tube, receiving tube upper end is fixedly connected with detection mechanism. Through detection mechanism, encoder can be detected, and whether each parameter meets design requirement and actual application demand can be judged through detection, to avoid performance problems in actual application, through the cooperation of lifting assembly and rotating assembly, the height and angle of support when using can be adjusted according to demand in detection process, the function of position adjustment is realized, more detailed detection data is obtained, through the cooperation of positioning assembly and detection assembly, so that the detection support can be used for fixing different specifications of encoder and detecting, improve the practicability of detection support.

The invention provides a manufacturing method of a solar cell, the solar cell and a photovoltaic module. The manufacturing method of the solar cell comprises the following steps: providing a substrate; forming a first doping layer on the partially exposed surface of one side of the substrate; forming a first passivation layer on the exposed surface of one side, far away from the substrate, of the first doping layer and the exposed surface of the substrate; performing first printing processing on the first passivation layer and the first doping layer to form a plurality of first sub-electrodes which are arranged at intervals along the first direction; and performing second printing treatment on the first passivation layer and the first sub-electrode, and forming a plurality of second sub-electrodes which are arranged at intervals along the second direction on the exposed surface of the first passivation layer and the exposed surface of the first sub-electrode. The problem that the performance of the solar cell is affected by metal contact recombination in the prior art is solved.

The utility model relates to the technical field of cutting supports, in particular to an automatic cutting and winding machine for chemical fabric drying. The cutting device comprises a machine body and a rolling assembly, one side of the machine body is provided with a cutting device, the cutting device comprises a supporting frame, one side of the supporting frame is fixedly connected with the machine body, one end of the supporting frame is fixedly connected with a drying box, and one end of the supporting frame is fixedly connected with a supporting plate; a fixing plate is fixedly connected to one side of the supporting plate, a connecting plate is fixedly connected to one side of the fixing plate, two air cylinders are fixedly connected to one side of the connecting plate, a transverse plate is fixedly connected to the output ends of the two air cylinders, a cutting knife is fixedly connected to one side of the transverse plate, and a stabilizing frame is fixedly connected to one side of the supporting plate. And one side of the stabilizing frame is fixedly connected with the machine body. The problems that a traditional chemical fabric winding machine only has a single winding function, and performance and application scenes of the traditional chemical fabric winding machine are limited due to function limitation are solved.

The utility model provides a fast-assembly rectifier for a UPS system, and relates to the field of rectifiers. The fast-assembly rectifier for the UPS system comprises a rectifier body, a supporting structure is arranged at the position of a shell of the rectifier body, and the supporting structure makes contact with a clamping groove used for installing the rectifier body, so that a gap is formed between the rectifier body and the clamping groove; the supporting structure comprises a main body part, two sliding parts and an elastic part; according to the quick-mounting rectifier for the UPS system, mounting is quick, more time and labor are saved in the dismounting process, quick mounting can be achieved through cooperation of a supporting structure and a limiting mechanism, relative stability between the rectifier body and a clamping groove can be automatically kept, the buffering and damping effects can be achieved through cooperation of a buffering pad and a spring, and the rectifier is convenient to mount and dismount. In addition, the buffer pad is matched with the main body part of the supporting structure, so that the rectifier main body cannot be in contact with the clamping groove, a large gap is generated between the rectifier main body and the clamping groove, and heat dissipation is facilitated.

The utility model discloses a high-mechanical-strength metal armored electric tracing band, which belongs to the technical field of electric tracing bands and comprises an outer armored layer, a first protective layer, a shielding layer and a second protective layer. A plurality of deformation grooves are formed in the inner ring of the outer armor layer and the outer surfaces of the first protective layer, the shielding layer and the second protective layer at equal intervals, a plurality of fixing grooves are uniformly formed in the outer surfaces of the first protective layer, the shielding layer and the second protective layer, elastic pieces are arranged on the fixing grooves, and the elastic pieces are connected with the first protective layer, the shielding layer and the second protective layer. And a positioning bump is arranged on one side of the middle part of the elastic sheet. According to the utility model, through components such as the positioning convex blocks and the positioning grooves, when the electric tracing band is installed and wound, the movement amplitude between layers can be reduced, the connection strength between the layers can be ensured, and the stable operation of the electric tracing band can be further ensured.

The utility model relates to a kind of rear subframe structures of five connecting rod suspension system, comprising: longitudinal beam, two longitudinal beams are longitudinally extended along the first direction and are symmetrically spaced along the second direction;Front crossbeam is connected with the front section of longitudinal beam;Rear crossbeam is spaced apart along the first direction with front crossbeam, and the rear end of two longitudinal beams is respectively penetrated and connected in rear crossbeam;Support assembly is used to install five connecting rod, and it includes front lower arm support, front upper arm support, camber arm support, toe arm support and rear upper arm support symmetrically arranged on two longitudinal beams;Two front longitudinal reinforcing plates are connected to front crossbeam at front end, and connected to camber arm support at rear end;Transverse stiffener beam is respectively connected to two camber arm supports at both ends, and connected to rear crossbeam at rear end;Rear longitudinal reinforcing plate is connected to transverse stiffener beam at front end, and connected to rear crossbeam at rear end.The utility model has the beneficial effect of realizing high overall stiffness / modality, high bending / torsional stiffness, high local dynamic stiffness and excellent space utilization.

The invention provides a web front-end big data performance management optimization method and a web front-end big data performance management optimization system, which are applied to the field of computer systems based on a specific web calculation model. According to the system, a Vue2 framework optimization scheme is adopted, on one hand, through non-response type data binding, a Vue response type system is abandoned, interlayer data is manually synchronized through event monitoring, and performance loss caused by large-scale response type data is avoided; on the other hand, by setting virtual rolling optimization superior to that in the prior art, on-demand rendering of dynamic form items is achieved, and the number of nodes is reduced. And on the other hand, by reasonably setting big data processing memory management and utilizing static data binding and component lightweight design, memory occupation during rolling is reduced, and browser memory recovery efficiency is improved. Therefore, the system can solve the performance problem of a large dynamic form page based on inter-layer collaboration and multiple inventive concept collaboration superior to the prior art, the front-end big data informatization development efficiency is improved, and the code maintainability and reconfigurable capability are improved.

The application discloses an anti-fragmentation method for a portable flash memory device and relates to the technical field of computer storage systems and operating system kernels. The method comprises the following steps: S1, in the file system initialization stage, a hybrid granularity partition model is established, and a storage space is proportionally divided into a small cluster area and a large cluster area according to functional requirements; S2, an extended allocation bitmap management structure is constructed in the memory; S3, in response to a space allocation request, an allocation strategy is selected according to the data characteristics of the request; and S4, an allocation process in the large cluster area. According to the application, the cluster space of the flash memory device is divided into the small cluster area and the large cluster area, various requests are classified and processed based on prompt information when allocating the space, and a relaxed reuse mechanism is introduced, so that the fragmentation process of the storage space is significantly delayed, and the average bandwidth of multi-threaded writing and the space utilization are significantly improved without affecting compatibility and space utilization.

The application belongs to the technical field of computer software, and discloses a dynamic binding and analysis method and system for multi-source heterogeneous data in a low-code platform, which comprises the following steps: using a recursive path serialization algorithm, a lexical rule is disassembled into an ordered attribute access sequence, and a business field identifier is extracted based on the ordered attribute access sequence to output a listening queue with a dependency relationship; the listening queue is used as a driving basis to perform multi-dimensional layered retrieval and data aggregation operation, and an evaluation strategy is selected according to the execution result and the complexity of the reference mode, and a memory isolation cloning result is output to complete data binding and analysis processing. The application constructs a self-describing protocol with conflict avoidance capability to solve the problem that static JSON configuration cannot directly express dynamic logic in a low-code environment, and can statically extract field-level fine-grained dependencies and establish accurate responsive listening.

The application discloses a target object identification method and device, electronic equipment and storage medium. The method is executed by a target object identification terminal. The method comprises the following steps: determining standard target object features matched with standard images according to the standard images sent by at least one image collection terminal; sending the standard target object features to the image collection terminal and deleting the standard target object features; if it is determined that the to-be-identified images and the standard target object features sent by a target image collection terminal are received, performing target object identification according to the to-be-identified images and the standard target object features, and sending the target object identification result to the target image collection terminal. The application can improve the efficiency of target object identification and reduce the cost of target object identification.

The invention discloses a business data isolation method and device, electronic equipment and a storage medium, and relates to the technical field of data processing.According to the business data isolation method and device, the tenant identification serves as the core, access permission is analyzed and verified to intercept illegal requests, and the SQL injection risk is completely eradicated; a database operation request is switched to a tenant exclusive database instance through a dynamic data source routing engine, and tenant data physical isolation is achieved in cooperation with a dynamically mounted independent storage partition; meanwhile, unified resource scheduling is guaranteed through unvarnished transmission of the context of the tenants, and the completely centralized performance problem and the completely distributed redundancy defect are avoided; the technical effects of guaranteeing tenant data physical isolation and safety, avoiding SQL injection risks, improving system performance stability in a thousand-level tenant scene, reducing deployment redundancy, unifying data standards, improving resource utilization rate and adapting to insurance industry multi-tenant business management requirements are achieved.

The invention discloses a personal voice assistant image updating method and device, a vehicle and a storage medium, and relates to the technical field of new energy vehicles. The method comprises the following steps: determining whether to update a personal voice assistant image; wherein the personal voice assistant image is formed by simulation based on a preset number of pre-created three-dimensional graph units; under the condition that the personal voice assistant image is determined to be updated, determining a target behavior mode corresponding to each three-dimensional graphic unit according to a current personal voice assistant state; and according to the target behavior mode corresponding to each three-dimensional graphic unit, determining a component data value corresponding to each three-dimensional graphic unit, and according to the component data value corresponding to each three-dimensional graphic unit, controlling each three-dimensional graphic unit to simulate to obtain an updated personal voice assistant image. According to the scheme, on the basis of a state driving mechanism, the image of the personal voice assistant can be instantly updated according to the state change of the personal voice assistant, and the naturalness and immersion of man-machine interaction are enhanced.

The invention relates to a target detection model hiding function embedding method and system based on output hiding, and the method comprises the steps: taking a conventional target detection model as a carrier, constructing a mixed data set on the premise of not changing the output dimension of the conventional target detection model, introducing a composite loss function comprising initial task loss and modulation loss, and carrying out the combined fine tuning. And hiding and embedding the predetermined target recognition result into the model output representation. And the embedded implicit information can be extracted through a decoding network initialized by a preset key, so that the hidden identification of the existence state of the predetermined target is realized. Compared with the prior art, the method has the advantages that original function precision of the carrier model is kept, non-inductive integration of special functions is achieved, and good concealment, effectiveness, safety and the like are achieved.

The invention discloses a cross-device electronic signature handwriting authenticity identification system, which unifies a data format through segmented resampling and cepstrum mean variance normalization processing of electronic signature data, and standardizes the data format to ensure the consistency of feature data of different devices on a time axis. A multi-stage one-dimensional depth separable convolutional network is utilized to perform depth feature extraction, and in combination with maximum pooling layer downsampling, the time sequence length and the calculation complexity are reduced. According to the multi-level feature fusion method, features of different depths are superposed, so that richness and robustness of feature representation are enhanced. Feature alignment and similarity measurement are performed through soft alignment, and the authenticity of the signature is judged through the alignment distance, so that the recognition accuracy and robustness of the model under different equipment and cross-time scenes are improved.

This invention discloses a demand-oriented dyeing and printing strategy guidance system and method, belonging to the field of dyeing and printing engineering technology. The system includes: an environmental constraint acquisition module for acquiring the application environment constraint characteristics of the dyed and printed materials; a process analysis module for obtaining process difference parameters and their distribution; a constraint allocation module for obtaining a constraint map; and a dyeing and printing guidance module for providing guidance using dyeing and printing strategies. This application solves the technical problem in existing dyeing and printing engineering technologies where dyeing and printing design cannot accurately allocate process parameters according to the application environment, leading to a mismatch between the performance of dyed and printed materials and actual needs. It achieves the technical effect of generating accurate dyeing and printing strategies through constraint maps in dyeing and printing engineering technologies, ensuring that the performance of dyed and printed materials matches the needs of the application environment and improving resource utilization efficiency.

The application provides a database intelligent index recommendation method and system based on reinforcement learning, which comprises the following modules: (1) an initialization module; (2) an action space definition module; (3) a reward function optimization module, which selects appropriate index operations to minimize the reward function value; (4) a model training module; and (5) a deployment and optimization module. The application introduces a reward function calculation method that comprehensively considers multiple key factors such as the optimization effect and size of the index, and the reward function can more comprehensively evaluate the good and bad of an action (index operation). Compared with a single index, this multi-factor comprehensive consideration method is more in line with the complexity of the actual database performance, and is helpful to improve the accuracy and applicability of the index recommendation algorithm. The introduction of the evaluation of the index size avoids excessive consumption of system resources such as memory and disk space. Considering the resource consumption factors such as the index size in the reward function helps to avoid performance problems caused by excessively large or small index configurations, and improves the robustness and practicality of the system.

A method of controlling brake pressure in a trailer brake system includes a trailer brake module for controlling braking force on one or more wheels on a trailer. The trailer brake module receives data inputs from sensors on the trailer and control pressure from the tractor in the control line. The brake system includes a second ECU configured to receive sensor inputs from sensors on the trailer, in communication with the trailer brake module and the towing vehicle. If the second ECU determines that the control pressure should be increased or decreased, the second ECU sends a request to the tractor to increase or decrease the control pressure accordingly.

The utility model provides a clothes processing device, and relates to the technical field of clothes cleaning. The clothes processing device can comprise the inner cylinder, the outer cylinder, the heating device and the electrolyzing device, the avoiding groove is formed in the outer cylinder, the heating device and the electrolyzing device are located on the front side and the rear side of the avoiding groove respectively, the electrolyzing device and the heating device are separated from each other, and therefore the size of an electrode of the electrolyzing device cannot be limited by the heating device, and the service life of the electrolyzing device is prolonged. The size of the electrode of the electrolysis device can be enlarged, so that the area of the electrolysis device is increased, the power density is reduced, and the problem of short service life or poor performance can be solved. And the possibility of contact between the electrolysis device and the heating device caused by installation errors or screw looseness is reduced, so that the risk of short circuit of the motor is reduced. Calcium and magnesium ions which are accumulated on the surface of the cathode of the electrolysis device and form precipitates due to long-time electrolysis are reduced, and reduction of electrode performance is slowed down.

The utility model relates to the technical field of surfactant bubble removal, in particular to a surfactant bubble removal device which comprises a bubble removal machine used for removing bubbles in a surfactant, the bubble removal machine comprises a machine body, a vibration motor, a discharging pipe and an intermittent vibration piece, and the water inlet end of a water pump is fixedly connected with a water absorption bent pipe. A water pump is arranged on the machine body, a water outlet end of the water pump is fixedly connected with a water outlet straight pipe, one end of the water outlet straight pipe is fixedly connected with a through pipe, and a pressure spray head is arranged at the bottom of the through pipe. And bubbles on the inner side of the surfactant in the machine body are further broken, so that the circulation of the surfactant is realized, and the problem that the concentration and the performance of the surfactant are possibly influenced by the water amount in the bubble discharging process of the surfactant bubble discharging device is solved.

A V-Al-Ni ternary alloy material for hydrogen permeation and its preparation method are disclosed, relating to the field of hydrogen separation and purification membrane technology. The chemical composition of the alloy is V... 75 Al 10 Ni 15 The preparation method includes: cleaning, drying, and precisely batching high-purity metal raw materials; melting the batched raw materials under vacuum arc to obtain a uniform alloy ingot; wire-cutting the ingot into samples and then grinding and polishing the surface; finally, depositing a Pd catalyst layer onto the polished alloy surface. The alloy prepared by this method has a body-centered cubic structure, exhibiting both excellent resistance to hydrogen embrittlement and a high hydrogen permeability coefficient. Its hydrogen permeability at 673 K is comparable to that of a pure Pd membrane, showing broad application prospects in the field of hydrogen separation and purification.

The application relates to a database management method and device, computer equipment, a storage medium and a computer program product. It relates to the field of digital twin technology and can be used in the field of financial technology or other related fields. The method comprises the following steps: in the case that a data access request is received, sending the data access request to a physical database and synchronously sending the data access request to a corresponding twin database of the physical database; in the twin database, performing an abortion operation on a processing request process corresponding to the data access request meeting an abortion execution strategy; and in the case that the running speed is greater than a first speed threshold, synchronously performing the abortion operation to the physical database to control the abortion of the processing request process corresponding to the data access request meeting the abortion execution strategy in the physical database. The method can avoid performance problems in the physical database as much as possible and improves the management effect of the physical database.

The utility model discloses a nitride semiconductor laser, which comprises a heat dissipation heat sink and a laser structure, and is characterized in that the laser structure comprises a first type waveguide layer, a quantum well layer and a second type waveguide layer which are stacked in sequence; wherein the first type is a P type, and the second type is an N type; or, the first type is an N type, and the second type is a P type; the doping concentration of the P-type waveguide layer is gradually changed along the growth direction of the device; the nitride semiconductor laser is obtained by growing and stripping on the gallium surface of the gallium nitride substrate. The gallium-based solar cell is obtained by growing and stripping on a gallium surface, thereby being beneficial to heat scattering and improving the high-power output performance of the device; and meanwhile, in cooperation with gradient doping of the P-type waveguide layer, penetration dislocation can be reduced through staged lattice matching.

This invention discloses an anti-intake distortion flame tube and combustion chamber in the field of aero-engine technology. The anti-intake distortion flame tube includes an annular tube body and a mixing unit mounted on the tube body. The mixing unit includes a first-stage vortex generator fixedly mounted at the head of the tube body and a fuel nozzle coaxially mounted through the first-stage vortex generator for delivering fuel into the tube body. A fairing is mounted on the tube body to cover the first-stage vortex generator. The intake uniformity of the first-stage vortex generator is controlled by the air inlet opened in the fairing. The size of the fairing matches the first-stage vortex generator to cover a single first-stage vortex generator. By using a fairing that matches the size of the first-stage vortex generator to cover a single first-stage vortex generator, multiple fairings are independent of each other. Compared with improving the intake uniformity of the vortex generator by increasing the density of the vortex generator blades or enlarging the air inlet, the fairing can achieve greater rectification benefits with less weight.

The application belongs to the technical field of quantum security, and discloses a post-quantum secure small-size linear homomorphism signature method and system. The application prevents loss of integrity / realness of original basic data without verifying the integrity of each data item one by one, prevents cheating of a remote untrusted computing party without repeating the computing work of the computing party for verification, prevents transmission error of a computing result, and resists quantum computer attacks. The application designs a linear homomorphism signature algorithm based on a lattice under a standard model, and has the advantage of a small-size public key compared with related work.

The application relates to the technical field of transformers, and discloses an outdoor oil-immersed transformer capable of avoiding rainwater penetration, the bottom of a storage pool is fixedly connected with a fixed bottom frame, the top of the storage pool is sleeved with and slidably connected with a drying device, the top of the drying device is fixedly connected with a waterproof shell, the inner wall bottom of the storage pool is fixedly connected with a fixed pipe, the side of the fixed pipe is sleeved with and fixedly connected with a magnetic sheet rack, the side of a lead-out pipe is fixedly connected with a rotating device, the top of the lead-out pipe is fixedly connected with an exhaust device, the top center position of a sliding top shell is fixedly connected with an adjusting device, the rotating device is arranged below a power receiving ring, the sliding top shell is sleeved with the side of the storage pool and slidably connected with the storage pool, and the top of the exhaust device is fixedly connected with the inner wall top of the waterproof shell, the outdoor oil-immersed transformer capable of avoiding rainwater penetration can actively remove water and perform internal breathing.

The invention discloses a flexible paper-based electronic device and a preparation method, and belongs to the technical field of flexible electronics, and the electronic device is used for improving the performance of the flexible electronic device. The smooth layer covers and is cured on the surface of one side of the paper substrate, and the surface, away from the side of the paper substrate, of the smooth layer is a flat surface; the circuit layer comprises a conductive circuit and a functional unit connected with the conductive circuit; and the packaging layer covers the surface of one side, deviating from the smooth layer, of the circuit layer and is used for isolating environmental water vapor and mechanical damage.

The application provides a method and device for simultaneously improving C / C++ executable program compatibility and performance, the method comprising: in the coding stage, not adding macro limitation to the entrance function and the function without compatibility or performance requirement, adding macro limitation inside the function with compatibility or performance requirement, and adding a specific platform postfix to the function name by using ## symbol; in the compiling and linking stage, the entrance function and the function without compatibility or performance requirement are compiled only once, the function with compatibility or performance requirement is compiled multiple times, and the.o file name of each compiling is distinguished; in the running stage, the current CPU instruction set is acquired, the function name is constructed by calling the function name with the instruction set containing ## symbol, it is judged whether the function with the instruction set postfix exists, if the function with the instruction set postfix exists, the function is called, and if the function with the instruction set postfix does not exist, the function without any postfix is called. In this way, by specifying a set of processes in each stage, the compatibility and performance of the executable program are enhanced.