查询词典 prediction

The prediction results show that the proposed method can reflect the varying rule of transmission line rating and the thermal overload risks, and improve the accuracy of rating prediction effectively.

预测结果显示该方法能够反映容量序列未来变化的趋势及线路发生热过载故障的风险性，提高了预测的精度，是有效、可行的。

This method is based on the Snell law of acoustic propagation in water. Different velocity gradients among linear layers in water are utilized to draw the sound ray chart, and a mathematical model of the geometric operational range is built. Furthermore, the geometric homing range is predicted with sound ray density, a prediction system of geometric operational range for acoustic homing torpedo is designed and the function of the system is realized through a system software. The sea trial demonstrates the prediction validity of the system.

该方法基于声波在水中传播的Snell定律，利用水中各线性分层间不同的声速梯度，绘制声线图，建立了几何自导作用距离的数学模型，并通过声线密度对几何作用距离进行预报，设计了声自导鱼雷几何作用距离预报系统，并通过系统软件实现了其功能，经测试，该系统在海上试验中取得了良好效果。

In this paper a genetic algorithm four-dimension data assimilation system was applied to the more complex MM5 model, we verify the performance of the genetic algorithm assimilation system, we take the a heavy rainfall process during 04-05, July, 2003 as the experimental research object, and carry out data assimilation experiment of actual observation data, compare the experimental results of the genetic algorithm assimilation system and MM5 adjoint model assimilation system with the experimental results without assimilation, the following is the result:genetic algorithm assimilation system is used not only in a barotropic primitive equation but also in the complex model, MM5, for example, in the ideal experiment the result of the genetic algorithm assimilation system is better than the MM5 adjoint model assimilation system, in the assimilation experiment of actual observation data, whichever assimilation system is used, the initial field of numerical prediction model is effectively improved and the prediction effect of physical field and rainfall are somewhat enhanced.

本文将遗传算法的四维同化系统运用到更复杂的MM5模式中，在理想实验中验证遗传算法同化系统的性能，并以2003年7月4日"南京暴雨"作为研究对象，进行了实际观测资料的同化，并将遗传算法同化系统和MM5伴随模式同化系统得到的结果跟未同化的结果进行了比较，结果如下：遗传算法同化系统不仅可以用在正压原始方程模式上，同样也可以用在MM5等复杂模式上，理想实验证明了遗传算法同化系统优于MM5伴随同化系统，在实际观测资料同化中，采用两种方法的同化系统都能有效地改善数值预报模式的初始场，能在一定程度上提高物理量场和降水量的预报效果。

At the same time, we prove that the best linear unbiased prediction of a linear predictable variable Qy and the best linear unbiased prediction βn=(X"sV-1Xs)-1 X"sVs-1ys of regression coefficients of the finite populations βn=(X"V-1X)-1X"V-1y are admissible under matrix loss function and in the class of the linear predictions and the class that contains all predictions, and under quadratic loss function in the class of the linear predictions.

在线性预测类和一切预测类中是可容许预测，而在二次损失函数下其在线性预测类中是可容许预测。

Based on the disadvantages of GM(1,1) prediction, this paper tries modifying it, and the modifying model is identified by the prediction of amble land in Wuhu City.

摘要针对GM(1，1)模型预测的不足，对其进行修正得到修正模型，并利用芜湖市耕地变化进行实例验证和应用。

We utilise the date being gained from 5# BF of JinXi Iron and Steel Co.to train the network、to simulate forecasting and control.We also analysed predicting results and analysed the qualititive and quantitative relationship between controlling parameter or medium parameter and silicon content of heat metal.On base of these,we form some control rules and set up a whole silicon content of heat metal prediction and control NN model. The model use fixed method and amendable method to simulate prediction.

利用津西钢铁集团公司5#高炉的实际生产数据对网络进行系统学习、模拟预测和控制，进一步分析预测结果，分析可控参数及中间参数与铁水硅含量的定性及定量关系、制定控制规则，从而构建出完整的铁水硅含量预测与控制的神经网络模型。

By making up of time-frequency local property and multi-scale analytical capability of wavelet transformation and self-learning and prediction function of artificial neural network,chapter three develops a prediction model loose combining wavelet analysis and Radial Basis Functionsneural network,abbreviated as Wavelet-RBFNN.

第三章利用小波变换的时频局域化特性和多尺度分析能力及神经网络的自学习、预测功能，通过小波分析与神经网络的松散型结合方式，建立小波分析和径向基函数神经网络(Wavelet-RBFNN)预测模型。

Virtual Prototyping Technology in the field of engineering machinery can be applied: the crawler and wheeled vehicle stability, performance studies, hydraulic system, traction equipment performance prediction, bulldozers, excavators, forestry machinery, such as dynamic performance studies, spare parts and Engine load prediction and size determined, the driver field of vision research, prediction excavator needed to power, the efficiency of research, the reliability analysis.

虚拟样机技术在工程机械领域可应用的方面有：履带式和轮式车辆稳定性、操作性能研究，液压系统、牵引设备性能预测，推土机、挖掘机、林业机械等动态性能研究，零部件和发动机载荷预测与尺寸确定，驾驶员视野研究，预测挖掘机所需要的功率，工作效率研究，可靠性分析等。

The author used bench mark of SPEC95 in the simulating experiments and analyzed the advantage and disadvantage of the branch prediction mechanism by analytical and statistical tool sim-profile. Pointing to the existing problems, the author improved the strategy of branch prediction, and provided the improved branch prediction strategy with high hit rate through comparison analysis.

仿真试验采用SPEC95中的测试程序进行测试，通过分析统计工具sim-profile分析分支预测机制的性能优劣，针对存在问题，改进分支预测策略，通过对比分析得出改进的分支预测策略具有较高命中率。

A self-containing model for the prediction of the production decline of a water flooded candstone oil reservoir is established by the application of a method of multilayer staged prediction (1) combined with the method of muleiple variables, multiple steps self-checking recurrence prediction (2) based on the analysis of the statistics of changes in the withdrawal rate in a seguence of time.

在分析研究系统的产量变化时间序列统计规律基础上，采用多层递阶预报和多变量多步自校正递推预报器，分别建立了水驱砂岩油田产量递减自适应预报模型。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。