33 results about "Computational mathematics" patented technology

Disclosed herein, a new concept of numeral created from alphabet is able to apply in education, telecommunication, computer and toy industry. For the sake of applicability, the present invention provides substitution methods where alphabet is replaced to the corresponding arabic numeral by similarity in shape, similar pronunciation with numbers, similarity in Roman and Chinese. In education, alphabetic language (English, French, Spanish) learners can calculate words and sentences in mathematics (abacus calculation, mental arithmetic, calculation), and learn words and sentences of languages in detail. Math (abacus calculation, mental arithmetic, calculation) learners can study alphabetic languages (English, French, Spanish) not in a tedious repetition of calculation but in a mathematical learning process. In telecommunication and computer industry, for instant input of letters, the alphabet letters are arranged to the corresponding numeral keys by similarity between alphabet and arabic numeral, and the number key, which reminds letters, is pushed designated times to input accordingly. In toy industry, diverse educational toys can be manufactured to learn substitution methods proposed in the disclosed herein.

Mathematical functions are computed using a single hardware pipeline that performs polynomial approximation of second degree or higher. The single hardware pipeline includes multiple stages. Several data tables are used on the computations. The data tables are associated with a reciprocal, square root, exponential, or logarithm function. The data tables include data associated with implementing the associated function. The single hardware pipeline computes at least one of the functions associated with the data tables.

The invention discloses a drainage basin water environment simulation and prediction method and device based on multi-model coupling, and relates to the technical field of environmental water conservancy and computational mathematics. Comprising the steps of obtaining input data of a to-be-predicted drainage basin; inputting the input data into the water environment prediction model; and based on the input data and the water environment prediction model, obtaining a water environment simulation prediction result of the to-be-predicted drainage basin, and completing dynamic simulation of the water environment of the to-be-predicted drainage basin from the drainage basin to the water body to the ecology. By forming a multi-dimensional nested land hydrology, hydrodynamic force and water environment coupling simulation framework, dynamic simulation of a water environment from a drainage basin to a water body to water ecology can be realized.

The invention discloses a method for calculating curved surface stress distributed in fluid based on numerical simulation. In a calculating model, virtual faces and grid interfaces both have grid elements such as coordinates, sizes and pressure differences and both have the same mathematical and physical significance. The difference between the virtual faces and the grid interfaces relies on whether the face is generalized into a curved face or not. When iterative solution is conducted on the whole model, the grid interfaces not generalized into curved faces allow water flow to pass through, and the virtual faces generalized into curved faces do not allow water flow to pass through. That is, in model calculating, the virtual faces are curved surfaces. Thus, the stress of the curved faces can be obtained after obtaining the stress of the virtual faces. The stress distribution of the curved faces in a mathematical model can be accurately calculated and fine analyzed; in addition, for thecharacteristic that the curved face stress distribution calculation amount is large, a calculating logic conforms to a computer programming logic, and programming calculating is easy.

The invention discloses a real-value optimization method based on a binary group structure cockroach bionic algorithm, which divides the cockroach population into several subgroups according to the individual subscripts of the cockroaches; Complete the optimization calculation in the binary structure formed, and complete the calculation of the next step of the cockroach through the greedy selection strategy, and then complete the calculation of the optimal solution of the entire algorithm; , and adopts a novel binary population topology structure, which makes an effective balance between ensuring diversity and global and local search, and its optimization scheme is different from the existing cockroach bionic algorithm or other real-valued optimization method.

The invention discloses an electrified railway contact network computing system and method based on a cloud platform. The system cabinet comprises a cloud platform which is based on Hadoop or Spark cloud computing science and technology and is constructed through a cloud server. The cloud platform comprises a user management module, an electric traction power supply computing mathematical module,a big data analysis module and a terminal. The big data analysis module comprises a data acquisition module, an analysis module and a database; and the analysis module is used for calling the databaseand various calculation models pre-stored in the electric traction power supply calculation mathematical module according to the construction information newly input by the user, finding out the mostmatched construction information and construction parameters in the database and the most matched calculation model, and finally calculating the construction parameters. Through establishment of thecloud platform and analysis and calculation of big data, the working efficiency is greatly improved, the parameter repeated utilization rate is high, standardized management is achieved, and the universality is higher.

The invention discloses a supervised local projection method for mining similarity between data. The method comprises the following steps: 1) acquiring data and proposing a mathematical model; 2) initializing, 3) updating, 4) converting, 5) calculating the maximum characteristic value alpha of an intermediate matrix variable, 6) calculating the value of loss1, 7) simplifying a mathematical model,8) projecting, 9) calculating the value of loss2, and 10) calculating the loss value of the mathematical model. The method can improve the classification accuracy and reduce the calculation complexityof batch operation.

The invention discloses a probability demonstration device for computational mathematics. The probability demonstration device comprises a bottom plate; RFID readers which are uniformly arranged on the bottom plate; a glass plate, wherein the bottom surface of the glass plate is in contact with the identification ends of the RFID readers; a lifter which is arranged on the edge of the bottom plate;a throwing mechanism which is arranged on the edge of the bottom plate and opposite to the lifter, the top end of the throwing mechanism is connected with the edge of the other end of the glass platethrough a second hinge shaft, and when the glass plate is parallel to the bottom plate, the glass plate and the top of the throwing mechanism are located on the same horizontal plane; the front sideand the back side of the coin are respectively pasted with an RFID electronic tag, the two RFID electronic tags respectively store different information, and the RFID electronic tags are matched withthe RFID readers. According to the invention, one coin is continuously thrown, and the front and back sides of the coin are identified after the coin is thrown, so that a large amount of experimentaldata can be obtained on the basis of no need of repeated manual experiments, and the experimental theory is verified.

The invention discloses a microgrid edge layer software platform based on edge calculation. The platform comprises system configuration information which is generated by a user according to the actualconfiguration of field equipment; a scheduling module which directly depends on the system configuration information and loads a device, a preprocessing calculation module, a strategy calculation module and a publishing module; the publishing module used for being connected with a microgrid cloud; a data preprocessing calculation module library which comprises a plurality of preprocessing calculation modules, wherein each preprocessing calculation module realizes a data processing function and realizes statistical calculation, mean value calculation, filtering calculation and mathematical function calculation; the strategy calculation module which is used for real-time calculation and issuing a calculation result to corresponding equipment in real time or optimizing equipment parameters in real time through the scheduling module; and a real-time database which is used for recording the service arrangement information of a user. According to the microgrid edge layer software platform,the platform function based on edge computing is realized, and a fully-played space is provided for edge side service computing.

The invention discloses a visual simulation system of a gravel aggregate production system, which is characterized in that a logistics module, a crushing module, a screening module, a stock bin and adjustment module and other functional modules are constructed by utilizing a sandstone aggregate calculation mathematical model based on a mathematical calculation module and a user-defined function module provided by Simulink. The calculation precision is basically consistent with that of manual calculation, but the iteration error is smaller, and the efficiency is improved by about 60%; the processing capacity and the final yield of each device of the gravel aggregate processing system are accurately calculated, and a basis is provided for device type selection and site arrangement design; a visual simulation system is provided for design and calculation of a gravel aggregate processing system, an established calculation model is a production process flow sketch, the source and the destination of data of each module can be visually displayed, and accurate calculation of a complex processing system is facilitated.

The invention discloses an evaluation and prediction method for the mental state of an individual in a simulated spaceflight environment based on information gain and an improved trust region algorithm, and belongs to the technical field of computational mathematics and spaceflight. Firstly, each participant is familiar with a head-mounted display and a simulated spaceflight environment; then an experiment task is carried out, the inclination angle of the body of the participant and the color of the virtual passenger compartment are changed each time, and small ball tracking accuracy data and interactive questionnaire survey data are collected; then, scaling the information gain ratio of different types of questionnaires to the small ball tracking accuracy in an equal proportion to determine the weights of different types of questionnaire questions, and weighting to obtain the mental state of the participant in each specified state; and finally, carrying out continuous fitting and carrying out optimal prediction by using an improved trust region algorithm so as to obtain corresponding body inclination angles and environment colors when the passenger group members are in the optimal mental state. According to the method, mathematical methods such as an evaluation algorithm and an optimization algorithm and a man-machine interaction method are fused, and an accurate research means is provided for human brain cognitive function research.

The invention discloses a typesetting method of an online mathematical fraction. The typesetting method comprises the following steps: analyzing DOM elements of a document; identifying a mathematicalfraction; recognizing a molecule; identifying denominators; converting fractions; a conversion molecule; adding a fractional line effect; converting denominators; calculating the sum of the number ofmolecules and the number of the denominators, and recording as N; and adding line content: adding the line content before the fraction and adding the line content after the fractions, and finishing the re-typesetting of the mathematical fractions. A identifier is added into the HTML document, and the display position of the mathematical fraction is calculated in the script; the content of the rowwhere the mathematical fraction is located is calculated, the content of the molecules and the denominators in the row is updated, the mathematical fraction is described in a table mode, the effect ofcorrectly displaying the mathematical fraction in most browsers is achieved through the typesetting characteristic of the table, secondary editing can be conveniently carried out, the whole process is rapid, and efficiency is high.