random fluctuation
1.Forecasting the requirements of electricity in rural area is an important work for county electric power supply enterprises with obviously random fluctuation, closely related to Gross National Product and the requirements of electricity last year.
2.The random process for the first upward fluctuation of water level in the surge tank at all load rejection was derived by means of Taylor series expansion,and the density function of the solution and the explicit formula for the maximum of mean surges were given.
4.In order to solve the problem of the fluctuation of reduction with the data set random division, this thesis bring forward the method of dynamic reduce to confirm the best reduction, and succeed in obtaining the optimum rule by applying the best reduction to data set.
5.With the consideration of the stochastic effect of ocean surface temperature fluctuation (OSTF) during non - adiabatic heating of the atmosphere by the tropical ocean, an evolution epuation of Langevin type is established for the va -riation atmospheric heat. The steady - state solution of the random differential equation yields a heating potential function and probability density function.
6.This paper gives a review on the five analysis approaches of fluctuation pressure on the hydraulic structures and hydromachines: the method of probability and random process, the method of time-space correlation, the method of fitting data, the method of distribution hypotheses on the data of test survey stations, and the hydromechanics method.
