This paper propose three methods to describe river water quality model undcr unccrtain, these are: (a) the stochastic model which describes the transport of pollution in water bodies and the random change of pollution concentration;

The elasticity distribution function and the probability density function of the total cost related to the purchase quantity of the single material in stochastic storage model in which multiple demanded material exist are further given. The elasticity change rules and the range of the total cost with random change of the purchase quantity of the material are discussed.

The stochastic model is a random field. Case calculation showed that its solution can reflect the trend and range of concentration change at any point and add probability meaning to isoconcentration to show the random change of pollution zone under influences of different factors.

Based on the improving of MRP to adapt to job shop, it also add the supporting to the changed plan, which corresponding to the varied require caused by the order form's random change.

According to the random change features of the monthly evaporating capacity in time series form January,1980 to December,2000 of the meteorological station of Changzhi County,Shanxi Province,this paper probes into the method for establishing the auto-regressive moving average ARMA model of the evaporating capacity change,and forecasts the evaporating capacity,which provides a kind of new path for studying on the random hydro-meteorological characteristics quantity.

This method based on SVM waveforms adoptted random change switch frequency and varying zero vector distribution, to reduce the switch losses and acoustic noise.

It can describe not only the spatial structure change of the regional variable, but also its random change, moreover its calculation is also the foundation of many other calculation of geostatistics.

In this paper, the laser Doppler reference optical system, average effect of diffused light phase random change of revolving object surface and least square fit method are studied, and a reference optical system with high signal noise ratio is designed, besides the loss signals arising from subtle structure of object surface are restructured, outline injury measurement of revolving object surface is attained with the relative error of 0.3%.

The stability of unsaturated slope is studied from the viewpoint of probability based on Monte-Carlo method. The law of random change in the safety coefficient of slope stability with the parameters of soil(rock) stratum materials is discussed.

We prove that a random change of variable in general improves convergence properties of the Fourier expansions, and we give a precise quantitative estimate of the phenomenon.

We derive these new formulas using the properties of random processes under phase transitions and a random change in time.

Modern humans have been shaped by the cumulative action of natural selection, non-adaptive random change, and sexual selection.

The number and average values of positive, negative and random change points is used to calculate a Scatterscore that indicates the magnitude and direction of overall change in water quality.

The Scatterscore Water Quality Evaluation was developed to yield a quantitative score, based on all measured variables in periodic water quality reports, indicating positive, negative or random change.

The cytogenetics of the biopsies from human nasopharyngeal carcinoma (NPC) has been investigated by chromosome G-banding technique. Chromosome preparations were made directly from 28 patients with NPC. The higher frequency in the gains of chromosome No. 19 and the losses of No. 14, 22, 3, 15 indicated non-random change in numerical aberration of chromosomes. The structural aberration of chromosomes mainly focused on several chromosomes of No. 1, 2, 3, 5, 7, 12 and 14, in which the frequency involving No....

The cytogenetics of the biopsies from human nasopharyngeal carcinoma (NPC) has been investigated by chromosome G-banding technique. Chromosome preparations were made directly from 28 patients with NPC. The higher frequency in the gains of chromosome No. 19 and the losses of No. 14, 22, 3, 15 indicated non-random change in numerical aberration of chromosomes. The structural aberration of chromosomes mainly focused on several chromosomes of No. 1, 2, 3, 5, 7, 12 and 14, in which the frequency involving No. 1 was the highest. Seven marker chromosomes: Iq-, 2q+, 3q-, 7q-, 12q - large subacrocentrie chrofosome and large chromosome involving No. 3 were found in NPC. 1q- was the most common in seven markers as was observed in 22 patients. The breakpoint of No. 1 was at 1q21-25 or 1q32. Three marker chromosomes previously found in NPC biopsies in our laboratory have been observed repeatedly. There-suits by G-banding analysis show that the formation of giant group A chromosome was not consistent and at least there were several origins, mainly concerned with rearrangement between chromosomes No. 1, 2, 3 or 5.

The induction time for pitting corrosion of the 18-8 stainless steel in neutral chloride solution is determined by potentiostatio technique. By experimental data analysis, the random change of the reciprocal induction time as well as the induction time is in conformity to logarithmic normal distribution. The effect of the chloride ion concentration on distribution parameter is discussed.

An intelligent pattern preparation system is presented in this paper, Its hardware is introduced briefly. The system can be used to prepare not only patterns for jacquard but also that of printing textile. Its feature of pattern design is that the input contours of source materials are extracted first, then, pressed on equal slope by a computer, and stored in its reservoir. The system creates patterns automaucally by means of a restrictive-random change method according to a mathematical model. After technological...

An intelligent pattern preparation system is presented in this paper, Its hardware is introduced briefly. The system can be used to prepare not only patterns for jacquard but also that of printing textile. Its feature of pattern design is that the input contours of source materials are extracted first, then, pressed on equal slope by a computer, and stored in its reservoir. The system creates patterns automaucally by means of a restrictive-random change method according to a mathematical model. After technological processing, the patterns created are output for making pattern carriers.