本文用最小二乘递推算法辨识自回归模型和自回归动平均模型,编制了电力系统短期在线负荷予报程序。
This paper uses the recursion algorithm of the least-square method to identify an autoregression model and an autoregression moving average model.
把移动平均线法交易情况与“买入持有法”作对比检验,结果表明称动平均线法累计获利统计意义上明显高于“买入持有法”。
By comparing test, it has been proved statistically that accumulated returns with moving average transaction method are higher than with "buy and hold" method.
母体,随机样本。样本统计, 样本平均数和变异数的动差。
Populations, random samples. Sample statistics, moments of the sample mean and variance.
美国国家航空航天局发布的12月3 - 10日北极涛动示意图显示,加拿大巴芬岛和格陵兰岛中部的部分地区气温比2002年至2009月的平均气温高15度。
Nasa's Arctic oscillations map for 3-10 December shows that parts of Baffin Island and central Greenland were 15c warmer than the average for 2002-9.
大局观维度存在兴趣区数目、回视次数、眼跳次数、注视次数和平均注视持续时间等五个眼动指标。
There existed some difference in average fixation duration, fixation counts, saccade counts, run counts and interest area for global perspective.
矩,动差任意变量的正整数功效的期望值。第一个矩是分配的平均数。
The expected value of a positive integral power of a random variable. The first moment is the mean of the distribution.
当破坏标准选定时,界限累积耗损能量与平均应力、偏应力比及动应力间较好的回归关系。
When the failure criterion is decided, the limit accumulate energy dissipation can be fitted by a formula which includes the average stress, deviator stress ratio and cyclic axial stress.
利用模糊数学方法,通过模糊综合评判,确定了转臂轴承的模糊平均当量动载荷,并计算了转臂轴承的模糊可靠性寿命。
Fuzzy average equivalent dynamic load of arm bearing is calculated by using fuzzy mathematics method and fuzzy comprehensive evaluation. Fuzzy reliability life of arm bearing is calculated.
本文对动失速型非定常分离涡结构的控制方法,在低速风洞中应用相平均测压技术进行了实验研究。
Experimental investigation on the control of dynamic stall type vortex flow was made in a low speed wind tunnel by using phase averaged pressure measurement technique.
大粒径粒子较小粒径粒子的平均循环时间短,大颗粒通过喷动区的次数大于小粒子,生长较快。
The motion tracks of large-size particles are shorter than that of little size ones, and accordingly the average circulation-time are shorter with less effects of aeration velocity.
根据伽师震群地震的2 1 77个P波初动方向记录,计算了伽师震群的平均震源机制解。
The average focal mechanism of the swarm area has been inversed from the spatial distribution of the polarities of 2177 P-wave initial motions in the Jaishi swarm.
当刹车比压和能载增加时,经过不同温度处理的四种试样干态及湿态平均动摩擦系数均相应下降。
The average dynamic FC of four kinds of samples treated under different temperatures was reduced in dry and damp condition as brake pressure and energy were raised.
湿态环境下平均动摩擦系数降低,但随着压力的增大,这种影响减小。
The humidity results in low friction coefficient, but the braking presure will decrease the effect.
在热带大西洋大部分区域内,WHOI对湍动热通量的平均场和时间变化的估计精度要高于NCEP1和NCEP2产品。
In the most area of tropical Atlantic, the evaluation of magnitude and time series trends of flux in WHOI are more accurate than NCEP1 and NCEP2.
含水率与初始平均主应力对预剪应力作用下原状黄土的初始动剪切模量具有显著的影响;
Water content wand initial average principal stress pm0 have significant influences on the initial dynamic shear modulus of undisturbed loess under the condition of pre-shearing stresses.
存在预剪应力作用时,含水率与初始平均主应力对原状黄土动剪切模量的影响程度降低;
The degrees of effects of water content wand initial average principal stress pm0 on the dynamic shear modulus of undisturbed loess reduce under the condition of pre-shearing stresses.
结果显示基金市场存在先动优势,即基金设立时间越早,平均净值增长率越高。
The findings show that there really is a first-mover advantage in funds market-the earlier a fund is set up , the higher the average growth rate of net asset value is.
因为温度相同,那么根据动理论,粒子的平均动能也相同。
Since the temperature is the same, so, according to the theory, is the average kinetic energy per particle.
平均应力和动载应力振幅同时改变时,对动态响应影响最大;
When shifting both the mean stress and the dynamic stress amplitude, the influence on dynamic response is the most intensive.
在流体域的动网格上,通过求解非定常的雷诺平均N - S方程,计算出翼型表面的非定常气动力。
In the aerodynamics domain, the time-dependant aerodynamic force on the surface of the airfoil is computed by solving the unsteady Reynolds averaged Navier-Stokes equation.
在流体域的动网格上,通过求解非定常的雷诺平均N - S方程,计算出翼型表面的非定常气动力。
In the aerodynamics domain, the time-dependant aerodynamic force on the surface of the airfoil is computed by solving the unsteady Reynolds averaged Navier-Stokes equation.
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