2988results about How to "Solve complexity" patented technology

The invention discloses a water-based cutting fluid used in slice machining of a hard brittle crystal material, comprising the following compositions: base oil, organic amine, organic acid, synthetic ester, emulsifier, rust and corrosion inhibitor, dispersion flocculation and hard-water resisting agent, antiseptic bactericide, antifoaming agent, coupling agent, adjuvant and a proper amount of water. Aiming at the machining techniques of inner circle slicing and outer circle slicing, the water-based cutting fluid has good generality, lubricity, strong antirust property and a long service life; when the cutting fluid is used, the machining situation can be observed easily, the cooling property is good, the cleaning and the permeability are strong, cuttings subside easily, and the machining problems of machining error, crack and the like caused by cutter blocking, abrasion and the like are solved; according to the invention, the problems that cuttings are easy to adhere and suspend, a cutter is seriously abraded, a machined product cracks easily, the accuracy is not high, the machining efficiency is low, the later period cleaning is complex and the like existing in the current slice machining of the hard brittle crystal material are solved, and further, a machine bed is protected, and the cost is reduced.

The invention discloses a method for scheduling satellite data product production tasks in parallel based on multithread. The method comprises the following steps: setting priorities for tasks to be scheduled for executing and realizing a uniformed interface; adding the tasks into a priority queue according to an order of the priorities from high to low; setting the maximum number and the minimal number of the tasks of a thread pool, and the longest idle time of a thread; and starting a daemon thread in the thread pool and a plurality of task threads to execute the tasks, wherein the daemon thread regulates the number of the task threads dynamically according to the situation of task amount. The method can utilize system resource rationally, aims at the data product production of a satellite ground application system, and solves the difficult points of complicated product production processes, long task executing time, large task amount, high real time and parallelism degree for scheduling the tasks and the like.

A satellite effective load management system and management method, the system comprises a load distributor, a storage module, a signal transformation processing module, a data multiple connection module and a center processor module, the modularization, integration, standardization effective load management system design conception provided by the invention integrates the data transmission, telemetering measurement remote control, power supply management to be centralized, meanwhile the standard, configurable effective load interface can be designed, so that the resource configuration and the interface configuration of the system are fixed and uniformed, the matching performance problem of effective load managing each task can be effectively solved, the good software and hardware platforms can be provided for time sequence, information and safety management of effective load management, thereby improving the effective load management design level and reducing the complicated degree, corresponding weight and power consumption and so on of the effective load management system, certain basis can be established for improving the whole star performance.

This invention relates to the Life Cycle Management System for distributed Intelligent Electronic Devices (IED) starting from the design phase to the end of service phase. Hence, it caters to the needs from installation via engineering, installation / commissioning phases, until asset management and remote service support of the devices during the operational phase The increasing decentralization of the involved components via networks, especially via the Internet, is a key criterion and needs to be addressed by the life cycle management. The added value for the customer grows disproportionately with the degree of integration of multiple independent software components into a complex and often highly distributed control system. The architecture of today's control systems must be sufficiently flexible to allow customers to regard their plant components from various locations. Additionally, the stability, security and maintainability of such a system is strongly dependent on the homogeneity and interoperability of all involved components.

The invention relates to a method for managing the whole vehicle energy of a parallel hybrid power vehicle and assembly coordination control, which belongs to the field of drive system control of the hybrid power vehicles. According to the running state of the hybrid power vehicle, the method respectively controls a control module for a control algorithm to enter the whole vehicle for electrified self-check and fault diagnosis, an ABS coordinated control module, a coordinated control module assisting an AMT to shift gear initiatively, a control module for motor initiative compensation, a control module for mode switching and energy management, a module for processing and displaying whole vehicle state information, and an initiative control module for the idling stop of an engine so as to control the energy distribution of a hybrid power drive system and the coordinated operation of each assembly of the system. The method can perform energy management on the hybrid power drive system and coordinated control on each assembly so as to achieve the optimal energy distribution among the assemblies of the hybrid power drive system, improve the fuel economical efficiency of the whole vehicle to the utmost extent, and reduce the exhaust emission of the engine, ensure that the while drive system can work reliably and efficiently to obtain the optimal performance of the whole vehicle running.

The invention relates to a display calibration system of a LED display screen and a calibration method thereof. The system comprises a video capture controller, a data distributor, scanning control cards and LED display modules; the memory chips of the display modules save simple-point calibration data of the display modules, which is uniformly arrayed in a LED display box in the light of a row or column cascade; a plurality of LED display boxes are uniformly arrayed in the light of the row or column cascade to constitute the LED display screen; the head end scanning control cards of each row cascade or each column cascade of the LED display screen are respectively connected with a GigE communication interface circuit of the data distributor, and the data distributor is connected with the GigE communication interface circuit of the video capture controller via the GigE communication interface circuit thereof; based on the systems, the method takes the LED display modules for saving the simple-point calibration data as units, thus realizing the calibration of display screen pixel. The invention reduces the bandwidth requirements on the connection among the scanning control cards, realizes the function of plug and play of the display modules, is convenient for batch production and simple in maintenance operation, and improves the synchronicity of calibration of the display screen.

The invention provides a charging device that uses switched capacitor voltage converters to charge a battery using solar power. The charger uses boosting topology to efficiently use solar module photovoltaic power. The boosting topology enables a lower voltage to be used resulting in reduced cutting and soldering of photovoltaic cells. The battery charger has overcharge protection and uses inductor-less circuitry.

The invention relates to a safe access method of a cloud storage system, which belongs to the technical field of storage technology and information safety of computer, and solves the problem that secret key is complex to manage and dispense in safe access methods in prior arts. The method of the invention comprises a client progress, an authentication terminal progress and a storage terminal process. The client generates a main secret key and public parameters for each user based on an attribute password mechanism; the authentication terminal loads a user attribute database, a file attribute database and an attribute secret key database. In the invention, attributes of definite user, file and file operation type form an access control string to decide the access right of the user to the file, and thus problems of fine-grained access control and large scale user dynamic expansion in the complex cloud storage system can be solved, thereby greatly reducing the access control expenditure of the cloud storage system and providing an access control mechanism which is flexible, effective and safe for the safe access to the storage system.

The invention discloses a network hot event detection method based on text classification and clustering analysis. The method solves the problem that the efficiency and accuracy rate of the existing network hot event detection method based on clustering analysis need to be improved. The method comprises the steps that feature words are respectively selected for various classes of files through feature extraction and feature selection by utilizing a training corpus; each training text and test text are represented as vectors in all of the feature spaces by utilizing a vector space model method, and the weight of each dimension of the vectors is determined by utilizing a TF-IDF (term frequency-inverse document frequency) method, and then each test text is classified; the classified test texts in different classes are respectively subjected to clustering analysis, so the hot cluster of each class is obtained, the feature word representing the hot event is obtained through further analysis, and then the word property and other aspects of each feature word are analyzed; the description of each hot event is generated by utilizing relevant language knowledge and necessary linguistic organization. With the network hot event detection method based on text classification and clustering analysis, the detection efficiency and accuracy rate of hot events can be effectively improved.

The invention discloses a fabricated concrete column-steel beam energy dissipation type panel point connecting device. The fabricated concrete column-steel beam energy dissipation type panel point connecting device is composed of a beam-beam bolt connection component and a friction energy dissipation device, and comprises a prefabricated concrete column, a pre-buried steel beam, a middle steel beam and a combination connection steel piece, wherein transversal surfaces of the pre-buried steel beam and the middle steel beam are both H-shaped, webs of the pre-buried steel beam and the middle steel beam are connected through a web cover plate, and flanges of the pre-buried steel beam and the middle steel beam are connected through a connection cover plate. Earthquake energy is dissipated by using friction plates attached inside a combination steel piece and through a friction energy dissipation mechanism. Compared with the prior art, the connecting device can reduce adverse effects on a floor and achieve a beam hinge yielding mechanism by moving a plastic hinge outward, the energy dissipation device can improve fabricated structure energy dissipation and reduce damages of main structural members, connection parts and the steel beams can be conveniently maintained, replaced and dismantled for reuse, and simultaneously, the fabricated concrete column-steel beam energy dissipation type panel point connecting device is produced by using a whole prefabricated industrialization standard, and installed only through bolts on site, and has strong engineering practicability.

The invention relates to an inter-core communication and scheduling system and an inter-core communication and scheduling method based on a heterogeneous multi-core processor, which relate to the computer field. The inter-core task communication and scheduling system applied to the heterogeneous multi-core processor is designed by adoption of the symmetrical communication and scheduling method according to the characteristics of the heterogeneous multi-core processor; various inter-core communication messages and events are defined in the unified way through an inter-core event manager, and relationships among the inter-core messages, the inter-core events and inter-core tasks are established; and inter-core message data from a communication interface and a shared memory is processed, the events are set, task scheduling is triggered, and other operations are performed by an inter-core communication scheduler. The inter-core communication and scheduling system and the inter-core communication and scheduling method solve the problems of the communication efficiency for inter-core communication of different types of messages and task scheduling of the heterogeneous multi-core processor in the aspects of communication and scheduling, and solve the problem of complexity caused by the master-slave scheduling method.

The invention discloses a three-dimensional convolutional neural network (3D CNN) based video classifying method and belongs to the technical field of video processing. According to the method, a video is sampled at equal intervals to obtain a plurality of video segments, a video database is amplified, three-dimensional video segments are directly input into a 3D CNN, and time domain and space domain characteristics of the video are extracted, so that the limitation of a conventional video classifying method in manually selecting video characteristics and video modeling modes is improved. A parallel distributed 3D CNN multi-classification model lowers the complexity in learning the 3D CNN and enables a classification system to realize distributed parallel computation more conveniently. Relatively high identification rate can be achieved with only fewer video segments based on a 3D CNN multi-classification system, and videos not belonging to any type can be classified into new type, so that the classification error of the new type is avoided.

The invention discloses a video duplicate removal method and device. The video duplicate removal method includes the first step of dividing a first video set into a plurality of video subsets according to video text data, the second step of calculating the similarity of two videos in the video subsets through a spatial vector model, and the third step of carrying out duplicate removal processing on the videos in the video subsets to obtain a second video set according to the similarity. According to the video duplicate removal method and device, the problems that in the prior art, accuracy of duplicate removal conducted on the videos is low and calculation complexity is high are solved, and accurate and quick duplicate removal on massive videos can be achieved.

An operational platform for electronic contract management system includes a customer end and a server end mutually connected in network, in which, the server end includes: an electronic print center module, a contract template management center module and a user management center module mutually connected with the electronic contract management center module as the center, the customer end includes: a system manager module, an electronic contract manager module and an electronic contract user module mutually connected, the operation platform is completely based on the convenient and transparent network electronic contract solving plan, the electronic stamp is ciphered and integrated with intelligent key plates, the contract template is made dynamically by the template designer sawn and got according to the requirement of the user, the integrated cipher and digital waterprint cipher of the print of the enterprise, the personal print and handwriting signature guarantees the print un-fabricated.

The invention provides an electrolytic machining method for a thin-wall machine case of an aero-engine, belonging to the technical field of electrolytic machining. The electrolytic machining method mainly aims at the machining of a surface concave-convex structure of a complicated thin-wall rotary body part in the aviation field, and is characterized in that a tool cathode is of a thin-wall strip-shaped structure or a rigid rotary body structure; window or lug boss structures with different shapes are distributed on the surface of the cathode. In a machining process, a workpiece anode automatically rotates and the tool cathode is fed to the anode in a peripheral movement process. In the whole machining process, electrodes do not need to be replaced, and the surface concave-convex structure of the thin-wall rotary body part is machined and molded once through rolling sleeve electrolytic action of a cathode window.

The invention relates to the field of the language processing, and provides a decoding method based on a deep neural network translation model. The problems of high model training complexity, large training difficulty and slow decoding speed in a machine translation model are solved. The specific implementation way of the method comprises the following steps: performing word segmentation processing on the to-be-translated sentence to obtain source language vocabulary; step two, performing word alignment on the linguistic data in a preset translation model glossary by using an automatic alignment tool so as to obtain a target language word aligned to the source language vocabulary; and step three, determining a target-side dynamic glossary of the to-be-translated sentence based on the target language word obtained in the step two, and using the sentence decoded by using a column searching method as the output of the translation model according to the pre-constructed translation model, wherein the translation model is the deep neural network based on the threshold residual mechanism and the parallel attention mechanism. Through the decoding method disclosed by the invention, the model translation quality is improved, and the mode coding speed is improved.

The invention discloses a Chinese text sorting method based on correlation study between sorts. The method comprises the following steps of: firstly, dividing words of a document and performing rough selection on characteristics by computing word frequencies; secondly, further determining representative word items according to discrimination indexes between the word items and sorts so as to form characteristic word items which are finely selected; thirdly, training the document to be expressed by a tfidf weight and a discrimination index weight according to an index of the characteristic word items; fourthly, establishing a group of two-sort sorters corresponding to different projection vectors and training to obtain a code array expressing the correlation between two-sort sorters; and finally, projecting a multi-vector expression of a new document to all the two-sort sorters, introducing the code array, computing the similarity between each sort and the document, and outputting the maximum of the similarity as a sort judging result of the new document. The new document is sorted based on a correlation studying result between the sorts, and the running efficiency of an algorithm is improved on the premise of ensuring the sorting performance.

The invention relates to a wind-solar power generation and hydrogen-production hydrogen-storage system and an operation control method thereof, and relates to the technical field of new energy wind-solar power generation and hydrogen production. According to the invention, a rectifier at a fan side of a wind power farm is connected with a grid side inverter; a DC (Direct Current) bus is connectedwith a supercapacitor of a DC / DC convertor; the rear surface of the supercapacitor is connected with a hydrogen production and hydrogen storage system; a photovoltaic system is connected with the DC bus in front of the supercapacitor by the DC / DC convertor and is used as a power compensation unit of the wind power farm; the wind-solar power generation and hydrogen-production hydrogen-storage system further comprises a power coordination control module and a monitoring module; and problems of poor peak regulation capacity, unsmooth hydrogen production, short service life of equipment and the like of a wind-solar power generation and hydrogen-production hydrogen-storage system are mainly solved. The wind-solar power generation and hydrogen-production hydrogen-storage system has the characteristics that the system is high in peak regulation capacity; the requirement of a load evening peak can be met; smooth hydrogen production can be ensured; the service life of the equipment is prolonged; flexible grid connection can be implemented in the premise of ensuring purity of produced hydrogen; and an energy utilization rate is high.

The invention provides an aluminum-carbon sliding brick, which comprises the following compositions: 60 to 75 percent of aggregate, 15 to 30 percent of powder, 1 to 6 percent of carbon element materials, 2 to 7 percent of antioxidant and 3 to 20 percent of additive. The production method for the aluminum-carbon sliding brick comprises the following steps: firstly, the powder in the raw materials is premixed and prepared into mixed powder for standby; secondly, mixing is performed according to the feeding order of granular materials, a binder and the mixed powder; thirdly, the mixture is discharged and subjected to mechanical pressing; and fourthly, a green brick is dried and prepared into the aluminum-carbon sliding plate brick by an unfired technology or a light burning technology. The method adds nitride and spinel materials in the sliding brick to substantially improve the thermal shock stability of the sliding brick, so as to achieve the level of the aluminum-zirconium-carbon sliding brick; and because the addition of Al metals is adequately increased, air holes can be filled, and the method reduces the brittleness of materials, is favorable for green brick formation, and improves the volume density, the normal temperature strength and the high temperature strength, so as to improve the oxidation resistance of the sliding brick. The aluminum-carbon sliding brick produced by the method not only has good product quality and high strength but also has simple procedure and saves the sintering cost.

The invention discloses a self-ballasted fluorescent lamp convenient in installation, comprising a T5 fluorescent lamp tube with plug pins at the two ends, a light-transmitting casing pipe sheathed outside the T5 fluorescent lamp tube, transformation heads arranged at two ends of the light-transmitting casing pipe and electronic ballasts arranged in the transformation heads, wherein lamp guide wires are arranged in a T5 fluorescent lamp. The self-ballasted fluorescent lamp is characterized in that the lamp guide wires penetrate out from the plug pins at the two ends of the T5 fluorescent lamptube and extend outwards to form an electrode connection pin; and the T5 fluorescent lamp tube is in contact with the electronic ballast through the electrode connection pin to realize electric connection. By adopting a structure which is characterized in that the electrode connection pin is formed by penetrating out the lamp guide wires in the T5 fluorescent lamp tube from the plug pins, thus when the self-ballasted fluorescent lamp provided by the invention is installed, as long as the T5 fluorescent lamp tube is sheathed on the two transformation heads, the electric connection can be realized directly by virtue of the contact of the electrode connection pin extending out from the two ends and the electronic ballast, thereby the connection is quite simple, easy and convenient, and the self-ballasted fluorescent lamp has a simple structure.

The invention discloses an unlocking method and a device of a touch screen and terminal equipment. The method comprises the following steps of: displaying a region to be filled by the touch screen; receiving touch operation of the region to be filled and determining a filled region obtained by filling the region to be filled according to the touch operation; and unlocking the touch screen under the condition that the filled region and the region to be filled satisfy an unlocking policy. By adopting the invention, the unlocking operation of the touch screen is intuitive, convenient and quick, and user experience is improved.

A process for preparing the sulfurizing hydrocatalyst used for the hydrodesulfurizing and hydrodenitrifying reactions of light fractional oil and the hydrosaturating of arylhydrocarbon includes such steps as carrying a certain part of the precursor compound of the metal in VI and VIII families, introducing sulfur to it, heat treating, introducing the rest of said precursor compound, and drying.

The invention belongs to the technical field of computer vision and artificial intelligence, and particularly relates to a large-scale face recognition method based on a depth convolution neural network model. The method comprises steps of putting forward a residual error learning depth network model facing large-scale face recognition, wherein the residual error learning depth network model is formed by a convolution layer, a residual error layer and a full connection layer, and the residual error layer is formed by adding one path of multiple convolution layer cascade data and one path of original data to calculate the sum; and carrying out normalization operation in batch after each convolution layer in the model. According to the invention, by use of the characteristics of strong learning ability and good residual error learning convergence of the depth convolution neural network, layers of the model are increased in the aspect of the layer number of the network model; and in the aspect of residual error layer structure, the invention provides a highly efficient residual error layer structure. In the field facing the large-scale face recognition, the accuracy of the provided method is greatly improved compared with a base line model, and the accuracy of face retrieval in a million-class face recognition database can reach 74.25%.

The invention discloses a circumferentially-distributed crawler wheel type pipeline detection robot capable of actively adapting to pipe diameter changes. The robot comprises a crawler wheel travelingmechanism and a detection mechanism connected to the front end of the crawler wheel traveling mechanism through a turning mechanism, the crawler wheel traveling mechanism comprises a cylindrical mainbody sleeve, multiple crawler wheels controlled by a crawler driving motor are evenly distributed on the periphery of the cylindrical main body sleeve, the crawler wheels are installed on a ball screw through a pressing adjusting crank sliding block mechanism, and the ball screw is fixed to the outer wall of the cylindrical main body sleeve. The detection mechanism comprises a cylindrical detection barrel, an ultrasonic probe and a wide-angle camera stretch out of a detection barrel front end cover of the cylindrical detection barrel, the front end of the ultrasonic probe is provided with anultrasonic reflector, an electrical control system is arranged inside the cylindrical main body sleeve, and the electrical control system is connected with a battery. The circumferentially-distributedcrawler wheel type pipeline detection robot is good in movement controllability, outstanding in climbing and obstacle crossing ability and capable of actively adapting to pipe diameter working conditions.

The invention discloses a robust lens distortion correction method. The invention provides a method for separating lens distortion from camera parameters to be solved separately. The method comprisesthe following steps of: performing a feature extraction from a checkerboard calibration object by firstly performing angular point detection utilizing a Shi-Tomasi operator, then performing screeningaccording to the specific characteristics of symmetry and large variance of the checkerboard angular point, and finally obtaining an sub-pixel coordinate with accurate checkerboard angular point by utilizing a sub-pixel optimization algorithm; establishing a camera imaging model and a lens distortion model to obtain an optimized objective function with respect to a distortion parameter; and solving the distortion parameter by utilizing a nonlinear optimization algorithm for distortion correction. According to the robust lens distortion correction method, a calculation of all main distortion parameters can be accomplished with only one calibration object image containing the checkerboard, the model is simple, the calculation efficiency and stability are high, the application adaptability isgood in an industrial field, and the calculation accuracy is comparable to a traditional method.

An enhanced piezoelectric wire structure includes an elongated portion of piezoelectric material, a metallic core, and an outer conductive sheath. The metallic core is substantially surrounded by the elongated portion of piezoelectric material and configured to function as a first electrode for the piezoelectric structure. The conductive outer sheath preferably covers selected areas of the elongated portion of piezoelectric material and functions as a second electrode for the structure. The piezoelectric material may correspond to barium titanate ceramic fibers, such that a lead-free structure is effected, however other piezoelectric materials may also be utilized. The disclosed structure can be poled with a reduced poling voltage and lower temperature level, and also requires a reduced voltage potential level required for mechanical actuation.

The invention provides an online education system and method. The online education system comprises a teacher operation subsystem, a student service subsystem, a curriculum sale subsystem, a teachingservice subsystem, a teaching subsystem and the like. The online education method including steps of teacher information collecting, student information collecting, information matching, curriculum trial, curriculum sales, training plan starting, teaching effect tracking and the like. Via the online teaching mode, teachers and students are avoided from spending time in traffics, and students havemore selections; the multi-window online education system enables more convenient real-time interaction between the students and teachers; and the education system can track the teaching process and effect, the students and teachers can know the learning conditions better and make targeted improvement, and a multi-flow K12 service closed-loop system capable of improvement according to feedback isrealized.

The invention discloses a hierarchical classification access authorization management method based on roles. The hierarchical classification access authorization management method includes the following steps: S1, initialization is carried out, wherein it is assumed that n+1 data classes and m users exist in an assumed information system, an encryption key hierarchical tree is built, and calculation indexing is carried out on a main encryption key Kj and a class encryption key Kx; S2, data encryption is carried out; S3, user registration is carried out; S4, access requesting is proposed; S5, decryption is carried out. According to the hierarchical classification access authorization management method, a hierarchical classification authorization module based on the roles is built, a hierarchical encryption key management scheme based on the roles is used in the model, and permissions of the users for accessing specific data are given according to the roles and the grades of the users, so that the aim of more-fine-grained access control is achieved, the problem of unauthorized accesses caused by weak identity authentication is effectively solved, and meanwhile, the privacy of information resource in the system is effectively protected; in addition, the invention further provides an intermediate node for hiding hierarchical data structures in the system through access paths invisible to the users, and the leakage of sensitive information in the system is further prevented.

The invention relates to an environment-friendly composite microbial preparation, preparation thereof, and application thereof to aquaculture. An environment-friendly composite microbial water purifying agent comprises the following components in percentage by weight: 20 to 40 percent of bacillus subtilis, 10 to 20 percent of bacillus licheniformis, 10 to 15 percent of bacillus megaterium, 10 to 15 percent of brevibacillus laterosporus, 5 to 10 percent of bacillus pumilus, 5 to 20 percent of bacillus coagulans and 2 percent of biological activating agent. The high-concentration composite microbial preparation is prepared by screening eight strains of probiotics by simulating the physiological functions of normal microbial flora in an aquaculture environment and through scientific compatibility, so that division and cooperation amount the bacterial strains can be realized, a biological enhancement technology can be combined with an indigenous flora activating technology, complex problems in a culture water body can be solved completely, the using amount is small, the cost is low, and the competitive advantage is remarkable.

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.