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.

The invention relates to a ship thrust distribution method that can be used in different speed modes, comprising the following steps: (1), establishing mathematical models for calculating the thrust of various propellers of the ship; (2), establishing mathematical models for calculating the rudder force of the ship (3), based on various propeller thrust calculation mathematical models and rudder force calculation mathematical models of the ship to establish a ship force model; (4), based on the optimal power consumption and distribution effect of various propellers to establish an optimization objective function , based on the mechanical properties of various propellers and the ship force model to establish corresponding constraint conditions; (5), use the optimization algorithm to solve the optimization objective function, and obtain the actual thrust value of each propeller. It can use the combination of two propellers and two rudders + lateral thrusters to realize the optimization of thrust distribution in low-speed and medium-high speed modes.

Mathematical functions are computed in a single pipeline performing a polynomial approximation (e.g. a quadratic approximation, or the like); and one or more data tables corresponding to at least one of the RCP, SQRT, EXP or LOG functions operable to be coupled to the single pipeline according to one or more opcodes; wherein the single pipeline is operable for computing at least one of RCP, SQRT, EXP or LOG functions according to the one or more opcodes. SIN and COS are also computed using the pipeline according to the approximation ((−1)^IntX)*Sin(π*Min(FracX, 1.0−FracX) / Min(FracX, 1.0−FracX). A pipeline portion approximates Sin(π*FracX) using tables and interpolation and a subsequent stage multiplies this approximation by FracX. For input arguments of x close 1.0. LOG 2(x−1) / (x−1) is computed using a first pipeline portion using tables and interpolation and subsequently multiplied by (x−1). A DIV operation may also be performed with input arguments scaled up to avoid underflow as needed.

The invention discloses a probability demonstration device for calculating mathematics, comprising: a base plate; an RFID reader uniformly arranged on the base plate; the bottom surface of a glass plate is in contact with the identification end of the RFID reader; a lifter is arranged on the edge of the base plate; The projecting mechanism is arranged on the edge of the bottom plate and is opposite to the lifter, and its top is connected to the other end edge of the glass plate through the second hinge shaft. When the glass plate is parallel to the bottom plate, the top of the glass plate and the projecting mechanism are at the same level; An RFID electronic tag is pasted on the front and back of the coin respectively, and the two RFID electronic tags store different information respectively, and the RFID electronic tag matches the RFID reader. The present invention continuously tosses a coin, and recognizes the front and back of the coin after the toss, so that a large amount of experimental data can be obtained without manual repeated experiments, thereby confirming the experimental theory .