查询词典 forecasting theory

The partial least-squares regression model is built up to forecast crop leaf water potential of estival maize.Thirdly, atmosphere aspect, the low water age has been forecasting by R/S method of fractal theory in Si Chuan middle region. The chaotic behavior of agriculture meteorologic factors (average temperature, max temperature, min temperature, temperature of the earths surface, evaporators, precipitation, relative humidity, sunlight time) time series is investigated using the phase-space reconstruction technique, and the delay time and relation dimension and min embedding dimension and Lyapunov exponent and Kolmogrov entropy is calculated. The atmosphere water potential is calculated by surveyed data, and the day change law of atmosphere water potential and the relation between it and sun radiation has been discussed.

第三，关于大气方面，利用分形理论中R/S分析法对川中丘陵区的枯水年进行了预测；利用混沌理论的重构相空间技术，确定了农业气象因子(旬平均气温、最高气温、最低气温、地表温度、蒸发量、降水量、相对湿度、日照时数)的延时、关联维数、最小嵌入维数、Lyapunov指数、Kolmogrov熵，从而证明了以上各农业气象因子的时间序列具有混沌特性，为利用混沌理论预测各气象因子提供了科学依据；利用田间自动气象站的数据计算了大气水势并探讨了大气水势的日变化规律以及大气水势与太阳辐射的关系。

At last, arc reignition characteristic is defined for multiple-narrow slot chamber, and the mechanism of arc reignition process is analyzed. A mathematical model which forecasts the arc reignition process is improved for the first time by combining the striking theory of cathode layer with"black box"model for forecasting arc thermal reignition.

最后，通过试验确定了多纵缝陶土灭弧室中电弧重燃特性，对其机理进行了研究，并首次将阴极层击穿理论和预测电弧热重燃的黑盒模型相结合，建立了模拟陶土灭弧室中弧隙由电击穿到热重燃过程的电弧数学模型。

This paper is based on characteristics of transpacific shipping, analyzes its market features, and makes forecasting on container volumes of coming years by using three methods which includes time-serious, regression and gray theory.

本文针对太平洋航线的特点，分析了其市场形态和特征，利用时间序列，回归曲线和灰色理论，结合该航线供求关系，预测了该航线未来几年的集装箱运量。

This dissertation delves into the forecasting operation of hydroelectric stations with respect to its theory, methods and application.

本文针对水电站群的预报调度问题，从理论、方法和应用上对其进行了深入的分析和研究。

Combining the orthogonal wavelet networks with rough sets theory, a forecasting model of the orthogonal wavelet networks based on rough rets is put forward.

为满足复杂工程预测问题的需要，把粗集理论与正交小波网络相结合，建立了一种基于粗集的正交小波网络预测模型。

These provide feasible forecasting method for the formation and breaking of C type chip in side-curling form and provide a theoretical basis for"The Process of Chip-breaking and Expert System of Groove CAD" For the first time, the mathematical model of judging whether the side-curling short spiral chip break is set up and the criterion for the chip-breaking is posed by means of dynamics principle and elasticity theory.

所建立的横向卷曲C形屑与短螺卷屑数学模型、折断判据和断屑界限判据，根据大量试验及在开发的&切屑折断过程与槽型CAD专家系统&上应用证明：是可靠的、符合实际的。

To forecast fatigue damages of aircraft structure components and avoid fearful accident occurring, a new health forecasting method based on chaos theory and acoustic emission technology is proposed for aircraft structure components.

为解决飞机关键结构部件疲劳损伤的有效预测，避免灾难性事故的发生，提出了一种基于混沌理论与声发射技术对飞机结构部件进行健康预测的新方法。

These are references of theory and test for safety assess of reactors. The paper put forward the concept of decrease coefficient , and the actual calculation process of K〓 for forecasting the fatigue life of the structure. The research made it possible to forecast the fatigue life of damaged materials, and the prediction was based on the S-N curve from the fatigue test of the smooth material with controlled strain.

提出了疲劳寿命的减少系数K〓的概念，给出了计算K〓预测结构的疲劳寿命的具体过程，这一问题的研究使以平滑材料控制应变疲劳试验得出的S-N曲线图为基础来预测有损伤材料的疲劳寿命成为可能。

The output forecasting influenced by uncertain history-data of film evaporator s is studied by Rough Set theory.

应用粗糙集理论研究了薄膜蒸发器历史数据不确定影响下的产量预测问题。

According to grey system theory and method, a forecasting and analysis method for the trend of forest fire disaster area was studied.

运用灰色系统理论和方法，研究了森林火灾受害面积变化趋势的预测和分析方法。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了