查询词典 prediction

The relationship between barotropic tidal currents and sea level were established for the first 45-day period using the transfer functions and harmonic analysis, and then carry the prediction for the second 45-day period. There is very good agreement between the observed and predicted semidiurnal tidal current, the rms error is less than 3 cm s-1. However, prediction on diurnal tidal current is rather disappointing, the rms error is about 19 cm s-1, suggesting strong baroclinic tidal component may have a significant contribution to the tidal current, which is not registered in the sea level records.

利用转换函数与调和分析两种方法，验证水位预报正压潮流的可行性，将观测资料分为等长的两段时期，藉由第一段时期约45天的正压潮流与水位的关系，预报下一段时期约45天的正压潮流，结果显示半日潮流的观测值与预报值大致符合，其均方根约在3公分/秒以下；但是全日潮流的观测值与预报值的差异大，其均方根最大可达到约19公分/秒，推测其原因为斜压潮分量大而影响潮流，但是不会对水位资料造成影响。

It was indicated by the CALPHAD that the solute content at the end point of primary solidification changes synchronistically with the start point, solute content in dendritic arm and the partition coefficient increase with the solid fraction. Simple Scheil equation was shown to be able to calculate the eutectic amount on the base of partition coefficient calculated by thermodynamics, its prediction for the different solutes is self--consistent and agreeable with the CALPHAD. The eutectic amount and SDAS was measured in DC experiment and compared to model value, it was shown that the experimental data are in agreement with the model prediction.

相图计算耦合Scheil模型的计算结果显示， Al--Cu--Zn合金单相凝固结束点的溶质含量与凝固初始点的成分同步变化，溶质含量和溶质分凝系数随凝固过程的进行不断增加；在热力学计算出合金分凝系数的基础上，简单Scheil方程可以计算初生相含量，从不同溶质得到的计算结果是自洽的，并与相图计算耦合Scheil模型的预测值一致；实验测定了不同成分铝合金的共晶含量和枝晶间距，实验数据与模型结果基本一致。

To the single axis control model of the stabilized platform, the sliding mode rule is founded. The value of extraneous disturbances is estimated by using GM (1, 1) grey prediction algorithm, and then it is added to the sliding mode control rule as the compensating part. At the same time, the value of the switching function is predicted by the grey prediction method, by which the control chattering phenomenon is reduced greatly.

基于稳定平台的单轴控制模型，设计了滑模控制律，采用GM(1，1)灰色预测算法估计扰动量，将其作为控制律中的补偿分量，同时应用灰色预测方法对滑模控制策略进行预测输出，有效地减弱了滑模控制的抖动现象。

The research on rolling force prediction for cold rolled thin plate by a mixed friction model including stick and slip frictions was carried out, and a new rolling force prediction model was obtained.

作者采用包括粘着摩擦和滑动摩擦在内的混合摩擦模型，研究了冷轧薄板轧制力预报问题，建立了轧制力预报新模型。

In Chapter 2, a Heuristic Prediction Method is presented for long time horizon optimal control problems. The keys of HPM are that a heuristic term is added to its cost function for each subproblem, and that a prediction method is adopted in the high level coordination.

在第二章启发式预估方法中，根据长期离散时间最优控制问题最优解的特点，在每个子问题的目标函数中增加了一项启发项，并且在协调级采用了预估算法。

Chapter 3 respectively gives the prediction increase satisfied the symmetric entropy loss function and Linex loss function, and then study the limitation trend of ratio of prediction value to true value with corresponding proofs.

分别给出满足对称熵准则和Linex准则条件的预期增长率，并研究了汇率增长率预测值与真实值的极限比变化趋势，给出了证明。

The ARIMA model has been applied to evaluate and predict the time series of macroscopic traffic volume.Complexity and prediction errors of 5 actual time series have been calculated.Based on the comparison of the calculated results,it is assumed that complexity is negatively correlated with predictability in macroscopic transportation system. complexity,prediction,transportation,Lempel-Ziv algorithm

针对这个问题，本文对宏观交通运输系统进行复杂性测度和时间序列模型估计，进而研究系统复杂度和可预测性之间的关系。1宏观交通运输系统的复杂性测度从上世纪末开始，关于交通运输系统非线性关系判据的研究方兴未艾，而对于如何实现交通运输系统可比化的复

In order to upgrade the prediction precision, a forgetting factor is led in, which contributes to the direct modifications of TVP and the indirect prediction results.

遗忘因子的作用是直接修正时变参数，从而间接修正预测结果，达到提高预测精度的目的。

SUSAN ROESGEN: Actually, Anderson, that year the prediction was for another very active hurricane season but the prediction turned out to be too low, they had predicted fifteen named storms that year, there turned out to be twenty eight named storms, the most ever on record and of course the worst being hurricane Katrina.

苏珊·罗斯杰：安德森，实际上那年的预测针对的主要是另一个非常活跃的飓风，但是后来证明，预测的次数要比实际发生的少得多。他们一开始预测已命名的飓风达到了15个，结果却发生了28次。史上记录的破坏程度最大的飓风就是卡翠娜。

At higher pressures, six-body effects become significant, and the inclusion of its contribution can extend the theoretical prediction from 60 to 180 GPa, where the empirical Vinet EOS give a lower prediction by 6-14%.

结合双原子势能函数，证明了单原子对体系总势能贡献分量的计算公式E=1/2[β~2U_2+(1-β~2)V_n]，对于高压氦体系，其中待定参数β的取值约0.5。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。