447results about How to "Fix performance issues" patented technology

The invention discloses a preparation method of a stable superhydrophobic hot liquid coating, and belongs to the technical field of surface coating preparation. According to the preparation method, in an acetone-water mixed system, in the catalytic effect of acid or base, organic silane and nano particles carry out hydrolysis and condensation reactions to obtain organic silane polymer/nano particle compound suspension; then organic resin adhesive is added into the compound suspension, the mixture is evenly mixed and evenly sprayed on the surface of a substrate material, and finally a thermal curing treatment is performed to obtain the stable superhydrophobic hot liquid coating. The prepared coating has an excellent superhydrophobic hot liquid performance, has the advantages of good mechanical stability, chemical stability, and environmental stability, and thus has a good application prospect.

The embodiment of the invention discloses a data forwarding method and system, and a switch. The method is applied to the data forwarding system, the system comprises a first subnet and a second subnet, the first subnet comprises a virtual machine and is configured with a virtual gateway, the second subnet comprises a plurality of gateway entities, the method comprises the following steps: receiving a first data message carrying an IP address to a to-be-accessed target and an Mac address of the virtual gateway of the first subnet sent by the virtual machine by the switch; determining a target gateway entity matched with the first data message in the second subnet according to indication information of the first subnet and the first data message; and performing package according to the first data message, the Mac address of the target gateway entity and a network identifier of the second subnet to obtain a second data message, and forwarding the second data message to the target gateway entity. By adoption of the data forwarding method and system disclosed by the invention, the gateway performance and bottleneck congestion problems of North-South communication can be solved, and the waste of IP address of the service subnet in the prior art can also be avoided.

The invention discloses a data packet coding processing method, comprising the steps of segmenting an input information bit sequence into C sub-information bit sequences; adding cyclic redundancy check CRC bit sequences with lengths of L to the C sub-information bit sequences; carrying out channel coding on the C sub-information bit sequences to which the CRC is added, thereby obtaining C coded code word bit sequences; dividing the C coded code word bit sequences into A coding block sets and defining each coding block set as an independent coding information packet; generating B check packets based on the A coding information packets through packet coding; and carrying out bit selection on the A coding information packets and the B check packets, wherein B rate matched check bit sequences are obtained only according to the information bits in the A coding information packets. According to the method, the contradiction between the performance and the complexity can be solved, the coding complexity can be reduced, moreover, the relatively good performance can be ensured, and the decoding speed and system throughput also can be improved.

The present invention discloses linked list based progress message transferring method. It contains main control progress establishing message queue, said message queue including allocated node queue and free node queue; first process progress receiving outer message, applying free node from free node message queue, chaining head and end of message field to sharing memory linked list then transmitting said linked list head pointer to second process progress; when after receiving first process progress transitive sharing memory linked list head pointer, second process progress converting first process progress transitive pointer into said progress address space memory address. Second process progress accesses sharing memory linked list in said memory address, processing and updating result to said linked list, then transmitting head pointer in said linked list to later processing progress. Adopting sharing memory pointer based message transferring technology and sharing memory linked list data structure, said invention effectively raises message transmission efficiency under on stream mode service processing frame.

The invention provides a corrosion inhibitor for inhibiting corrosion of magnesium alloy in automobile cooling liquid. The corrosion inhibitor consists of specific adsorption organic substance or/and film-forming inorganic substance, and water or/and ethanol. The corrosion inhibitor is a compound efficient anti-scale corrosion inhibitor, can well inhibit the corrosion of a magnesium alloy material in the cooling liquid in a wider temperature range, and has the characteristics of wide application range, low using amount, high efficiency, no toxicity or peculiar smell, full water dissolution, simple and convenient preparation, low cost, wide applicable temperature range, strong synergistic effect, convenient use, good comprehensive performance and the like. 100 to 1,000ppm corrosion inhibitor directly added into the automobile cooling liquid can inhibit the corrosion of the magnesium alloy, effectively inhibit the corrosion of the magnesium alloy material in the automobile cooling liquid at a normal temperature and a high temperature, and effectively protect the magnesium alloy.

The invention discloses a photovoltaic tracking optical angle sensor, consisting of a sensor body structure and a sensor post-stage signal processing circuit. The body structure part mainly comprises a sealing transparent glass shade 1, a top surface horizontal baffle 2, a sensor column side 3, photosensor elements 4, a light transmission slit 5, a facade groove 6 and a bottom surface photosensor element. The post-stage signal processing circuit mainly comprises a top surface photosensor element output signal processing circuit and a bottom surface photosensor element output signal processing circuit. The optical angle sensor adopts two working ways of coarse detection and precise detection. The coarse detection is finished by using four photosensor elements on the top surface which are arranged symmetrically and corresponding electric bridge comparison circuits, and the precise detection is finished by using the slit on the top surface, the photosensor element on the bottom surface and corresponding signal processing circuits. The photovoltaic tracking optical angle sensor can not only have higher tracking precision, but also have wider detection angle range, thereby well adapting to environment of wind-sand and having better capacity of resisting rain and snow.

The invention provides an Internet of Vehicles data exchange model based on a block chain. The model is based on an alliance chain and a relay chain (Relay-Chain), wherein each node in the model comprises a roadside infrastructure unit (RSU) and a vehicle unit (Onboard Unit), and each node in the model participates in the road side infrastructure unit (RSU) and the vehicle unit (RSU). By designingattribute access strategy matching between the nodes, unnecessary block generation is reduced, and the block chain overhead is reduced. The alliance chain and the cross-chain technology are combinedto realize message transmission between different alliances. And the realization process of the model is standard and easy to operate.

The invention relates to the technical field of lubricating grease, in particular to organic silicon lubricating grease and a preparation method thereof. The organic silicon lubricating grease comprises the following components in percentage by mass: 10 to 80 percent of base oil, 1 to 30 percent of modifier and 5 to 25 percent of thickening agent. The organic silicon lubricating grease has the advantages of wide application range, excellent dielectric property, insulating property, sealing property, thermal stability, shockproof property and lubricating property, and obvious improvement on lubricating property and thermal stability particularly.

The present invention relates to a city monitoring station air quality prediction method based on online multi-core regression. The method comprises: firstly, based on historical data, extracting multi-field features of a city monitoring station, such as a forecasting meteorological feature, a real-time meteorological feature, a traffic feather, local and peripheral city air pollutant feature and the like; then, based on the extracted features, training a multi-core regression model, and performing online adjustment on the multi-core regression model by using new data; and finally, based on the adjusted model, predicting the air quality of the monitoring station hour by hour in a future period of time. The method can be used for accurately and efficiently predicting the air quality of the city monitoring station and has a guiding effect on environment protection and public life.

The embodiment of the invention provides a method and device for dynamically configuring a user interface for a mobile terminal. The method comprises the steps that according to the user interface ofa mobile terminal application, an updated Lua script and an updated XML file are acquired; the XML file is parsed through the Lua script, a page layout attribute and a type CSS attribute of an interface to be updated are acquired and mapped to a Native control layer, and page typesetting of the interface to be updated is achieved; the Lua script runs, and a service logic attribute of the interfaceto be updated is acquired; according to page typesetting of the interface to be updated and the service logic attribute of the interface to be updated, an updated user interface is rendered and generated. The problems are solved that in the prior art, when the mobile terminal application is frequently updated, the performance and speed still restrict each other, and the user experience is lowered.

The invention discloses a cross-platform unified big data SQL (Structured Query Language) query method, which comprises the following steps of: expanding part of SQL semantics, and providing a unifiedcross-platform SQL query language for a user; enabling a unified SQL parser to parse the query statement submitted by the user into a logic query plan, and verifying the legality of the query statement according to the meta information stored in the unified meta database; enabling a cross-platform optimizer to optimize the structure and the connection sequence of the logic query plan and convertthe logic query plan into an optimal physical execution plan composed of a plurality of sub-queries bound with an execution platform; enabling a cross-platform scheduler to convert the optimal physical execution plan into a task flow graph, automatically schedule the task flow graph according to the dependency relationship among the tasks and execute all the tasks; designing a unified platform layer interface meeting cross-platform SQL query requirements, and shielding operation differences between different execution platforms. The cross-platform unified big data SQL query method solves the problems that an existing cross-platform query method is poor in usability, low in performance, large in data migration cost and the like.

The invention discloses a unified monitor architecture and method of a distributed data center. The architecture comprises the following nodes: a service registration module, a service providing module, a service consumption module, and a service running container, wherein the service registration module is used for service management, and the service management comprises at least one of the followings: service registration, service subscription, service information notification and service monitor; the service providing module is used for providing services and performing service registration through the service registration module; the service consumption module is used for subscribing services from the service registration module; and the service running container is used for providing at least one of the following functions: starting the service providing module, loading the service providing module, and running the service providing module. Compared with the prior art, the unified monitor architecture and method of the distributed data center facilitate unified management of the distributed data center, solve problems of performance of an original centralized system and distributed environment management, and have high practicability.

The utility model belongs to the technical field of real-time collaborative group editing, in particular to a consequence concurrent checking method under the environment of extensive collaboration, which is characterized in comprising: a logic time stamp is defined and the logic time stamp belongs to the technical field of real-time collaborative group editing as the direct consequence ordering vector time stamp; the utility model discloses the method to solve the consequence concurrent checking problem during editing the real-time group based on the time stamp. The method comprises the following three steps: estimate whether a remote operation is consequently ready; find the historical operations concurrent with the current remote operation; and estimate the consequence concurrent relationship between two random historical operations. The utility model can be used for editing the real-time group with an arbitrary scale; the performance has no relation to the activity of the collaborative participator, the collaborative environment scale and the total number of the collaborative participators; so the utility model is particularly suitable for being used for editing the real-time group under the extensive collaborative environment with low concurrent level.

The invention relates to a sensitive chip of a pressure sensor, in particular to a hidden-type MEMS pressure sensor sensitive chip and a manufacturing method thereof. According to the hidden-type MEMS pressure sensor sensitive chip and the manufacturing method, the problem that component performance and service life of an existing silicon piezoresistive pressure sensor are not ideal is solved. The hidden-type MEMS pressure sensor sensitive chip comprises an SOI wafer component layer (1) and a glass substrate (5), wherein the SOI wafer component layer (1) is formed by the practice that a substrate layer of an SOI wafer is etched in an etching process based on a stopping layer, and the BOX layer of the SOI wafer is taken as the stopping layer. Four voltage dependent resistors of the Wheatstone bridge including R1, R2, R3 and R4, eight doping wires (3) and eight connection anchor points (2) are manufactured on the SOI wafer component layer (1). The hidden-type MEMS pressure sensor sensitive chip and the manufacturing method are reasonable in design, the manufacture hidden-type MEMS pressure sensor sensitive chip overcomes influences of external environment factors on a component circuit, the defect that component performance is reduced due to thermal mismatch of materials is eliminated, and service life of components is prolonged.

The invention discloses methods and devices for face characteristic extraction and authentication. The face characteristic extraction method comprises steps that: two-dimensional Hilbert transformation on an acquired face image is carried out; the face image after two-dimensional Hilbert transformation is expressed in a mode of a two-dimensional parsing signal. Through the methods and the devices, technical problems of poor performance and high complexity existing in a face identification method in the prior art are solved, complexity of system realization is simplified, and accuracy and precision of the system are improved.

The invention discloses a model training method, a color difference correction method and device, a medium and electronic equipment, and relates to the technical field of image processing. The model training method comprises the following steps: constructing a mapping model between an original color information value and a standard color information value of an image by utilizing a coefficient matrix; Establishing an objective function of the mapping model based on the regular term of the variable exponent; Determining original color information values and standard color information values ofthe plurality of sample images; And calculating the objective function by using the original color information values and the standard color information values of the plurality of sample images so asto determine the coefficient matrix. According to the method and the device, the target function established by the regular term of the variable exponent is utilized, so that the model has stability under the condition of higher precision, and the accuracy of color difference correction is improved.

The invention relates to a UHMWPE modified wear-resisting composite pipe. The UHMWPE modified wear-resisting composite pipe is composed of, by weight, 100 parts of UHMWPE resin, 10-15 parts of rubber particles, 10-25 parts of molybdenum disulfide processed by a coupling agent, 1-5 parts of ultrafine carbon black, 2-7 parts of teflon and 2-5 parts of flow modifiers. The UHMWPE modified wear-resisting composite pipe solves the contradiction between the performance and the machinability of the UHMWPE modified wear-resisting composite pipe, the pipe with the thinner pipe wall is produced out, and the benefits of pipe manufacturers are improved; the production speed of the UHMWPE modified wear-resisting composite pipe can be increased effectively, the internal quality and the appearance quality of the UHMWPE modified wear-resisting composite pipe are improved greatly, the inner surface and the outer surface of the pipe can reach the mirror plane effect, and the wear resistance and the machinability performance of the UHMWPE modified wear-resisting composite pipe are improved.

The invention discloses a bidirectional real-time communication system and method based on a WebSocket and a message queue and relates to the technical field of communication. The problem that an existing real-time communication scheme based on the WebSocket protocol is liable to result in the condition that rear end service and a database need to bear a great deal of concurrent pressure is solved. According to the technical scheme key point, the system comprises a server and clients. The server comprises a marking module which is used for establishing unique identifications for the clients connected with the server, and an index module which is used for establishing indexes according to the unique identifications established by the marking module, wherein the indexes are used for positioning positions of the clients in WebSocket service. The server receives messages issued by a receiving message producer from a subscribed message queue in a message queue consumer mode and pushes the received messages to the clients according to the indexes. The server receives the messages passively and then pushes the messages to the corresponding clients, so the performance problem resulting from polling is solved.

One or more embodiment of the present specification discloses a dynamic current limiting method, apparatus, and system for achieving globally accurate current limiting by dynamically adjusting a current limiting threshold. The method is applied to a current limiting device which establishes a long connection with a server cluster, includes obtaining a flow restriction state of each server in the server cluster and a total flow restriction threshold of the server cluster, wherein the flow restriction state comprises a current flow restriction state of each server in a current working cycle and/or a historical flow restriction state in a historical working cycle; determining a current limiting threshold of each server in a next duty cycle according to the current limiting state and the totalcurrent limiting threshold; performing a current limiting operation on each server according to the current limiting threshold.

The invention discloses a data center comprehensive management system service government method. The method comprises the following steps: defining a specific service attribute model, establishing a micro-service government framework by adopting the state data updated in real time based on a data storage scheme of a memory; performing centralized management for mass and dynamic meta data of the micro service, and realizing immediate and rapid data change synchronization function through a persistence mechanism. The method disclosed by the invention is in favor of the unified management of thedata center, especially in a scene that the physical resource and the virtual resource need to monitor at the same time; the management system is constructed on the service architecture, and a performance problem of the original SOA mode and the management distributed environment problem are well solved. The method disclosed by the invention has reference significance for searching the similar distributed cluster scheduling system.

The invention discloses technology for producing hot-rolled pipeline steel of roll mill with a single frame furnace. Tapping temperature of steel billet is more than or equal to 1100 DEG C; rolling temperature of the second process is no more than 900 DEG C, and thickness of billet to be waited in temperature is less than or equal to 3.3 hours; pass rolling reduction rate in the second last is less than or equal to 9% and no more than 13%, the final pass rolling reduction rate is 0%; rolling speed of the second last pass of the final rolling is reduced to enable the final rolling temperature to be 780-820 DEG C; after the water temperature is 695-740 DEG C, online speed casting steel without rolling reduction rate is finished and the steel is cooled in a layer flow cooling system; temperature uniformity of rolled piece entering water and temperature uniformity of flat cooling are guaranteed; before entering a straightener, the rolled piece is produced with plastic deformation requirement no less than 80% according to thickness direction; and roll gaps of an entrance and an exit of the straightener are arranged. When rolling the pipeline steel for a special purpose, the invention can control steel plate shape and improve economic benefit while meeting performance requirement of the final product.

The invention discloses a preparation method for a single-layer graphene-enhanced aluminium-based composite material, relates to a preparation method for an aluminium-based composite material, and aims to solve the problems of high cost and great dispersing difficulty in the application of a single-layer graphene-enhanced aluminium-based composite material field at present. The preparation method comprises the following steps: firstly, weighing multi-layer graphene micro-flake aluminium metal powder, and weighing industrial pure aluminium block bodies, wherein the industrial pure aluminium block bodies and the multi-layer graphene micro-flake aluminium metal powder are in the weight ratio of (3-10):1; secondly, dispersing multi-layer graphene micro-flakes and moulding a precast block; thirdly, performing aluminium metal infiltration; fourthly, performing large plastic deformation; fifthly, performing high-temperature fusion treatment; sixthly, performing repeated plastic deformation and high-temperature fusion treatment. According to the preparation method for the single-layer graphene-enhanced aluminium-based composite material, the low-cost multi-layer graphene micro-flakes are taken as a raw material of an enhanced body, so that the cost is low; the content of single-layer graphene in the obtained composite material can reach 4 weight percent at most. The preparation method is applicable to preparing the single-layer graphene-enhanced aluminium-based composite material.

The invention discloses a composite lithium metal negative electrode based on an MXene aerogel and a synthesis method thereof, which belong to the field of lithium batteries. The composite lithium metal negative electrode comprises metal lithium and the MXene aerogel, wherein the MXene aerogel is assembled by cross-linking of two-dimensional MXene sheets and has a three-dimensional hierarchical porous structure; the MXene aerogel pores are filled with the metal lithium; and the thickness of the MXene aerogel is 300 mum to 800 mum. According to the composite lithium metal negative electrode prepared in the invention, rich pro-lithium functional groups on the surface of the MXene aerogel can be specifically combined with the lithium ions, uniform nucleation of lithium is thus realized, formation of lithium dendrites is suppressed, and the coulombic efficiency, the safety and the cycle life of the lithium metal negative electrode are effectively improved.