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First, it diagnoses and analyses the maglev train's suspension system and traction system by applying the FTA and fuzzy FTA method. Furthermore, it presents the new way to solute the diagnosis searching arithmetic by building the searching matrix based on the factors such as components' key weightiness, faults happen probability, searching cost. Then it can get optimal searching sequence for seeking the reason to the faults. Second, it builds the train's rank evaluation model based on multiple hiberarchy neural networks, after it takes the strategy that set the component diagnosis and whole train fault rank evaluation into two steps. Third, it deeply analyses reliability of the maglev train's power system with function-correlated feature, by the method that combining the FTA with the Markov model. Finally aiming at maintenance ahead of the fault, it proposes the blue print for the maglev train's maintenance. What's more, it introduces the design and realization to recorder for the train run data in detail.

应用故障树和模糊故障树分析法对磁浮列车悬浮系统、牵引系统进行全面的诊断分析,提出了以部件关键重要度、故障概率、搜索代价为因素,建立搜索决策矩阵,综合排序的搜索算法;采取部件诊断和列车集中评估相结合的分层诊断策略,建立基于多重神经网络的列车故障等级评估模型;结合故障树和马尔可夫模型对具有功能相关特性的列车电源系统进行可靠性分析;着眼事前维修,提出了列车运行维护方案,并设计实现了列车运行数据记录器。

The main contents are as follows:Firstly, starting with the general situation of soil erosion and the harms caused by it, the causes leading to the local soil erosion problem are analyzed comprehensively in the paper. And connecting with the measures taking place, sticking points towards the career of soil and water conservation are expatiated upon.Secondly, Back-Propagation Neural Network, One of Artificial Neural Network is used to set up a modal about the connection of the soil erosion modulus and seven factors impacts on it, such as, rainfall, rainfall largest intensity in 30 minutes, runoff coefficient, vegetation cover percent, rate of granule, rate of physical viscidity-clay, the rate of organic matter. Through the comparison with linear regression model, the second regression model, the Chinese Soil Loss Equation, it illustrated that BP Neural Network modal is more accurate than the other three modals in forecasting the mount of soil erosion, and the BP Neural Network will have some applicability in forecasting in soil erosion.

本文以霍山县作为皖西大别山区的典型区域,主要研究了以下内容:(1)从介绍霍山县土壤侵蚀状况以及所造成的危害入手,全面分析了导致当地土壤侵蚀发生的原因,并结合当地采取的水土保持相关措施,阐述了当地水土保持工作的症结所在;(2)结合上土市水土保持试验站多年实测资料和2005年实验资料,应用BP神经网络理论,建立了次降雨土壤侵蚀量与次降雨量、最大30min雨强、径流系数、植被覆盖度等因子之间关系的模型,并通过BP神经网络的预测模型与一次回归模型、二次回归模型、CSLE模型之间的对比分析,说明了建立的BP神经网络模型在土壤侵蚀预测可以取得较回归模型和CSLE模型更高的精度,也说明了BP神经网络理论在土壤侵蚀预报中具有一定的适用性。

The rule space model is a cognitive diagnose model which combines with the cognitive psychology and psychometric. It can be applied to identify cognitive errors in students' problem solving and to classify the examinees into a set of attribute-mastery patterns.

规则空间模型是一种将认知心理学和心理计量学相结合的认知诊断模型,它可用于识别被试解题的认知错误和判别被试的属性掌握模式。

According to reliability theory of man-machine system and locomotive driving behavior chains, the locomotive single-driver's driving behavior model is set up based on perception, judgment, executive components and their modules, then the double-driver's driving behavior model is also established by integrating the characteristics of double-driver's driving behavior.

在人机系统可靠性理论与机车驾驶行为链的基础上,结合双司机作业特点,构建了基于感知、判断、操作元件及模块组的单司机及双司机驾驶行为模型。

On the basis of this model, combined with potential flow for expressing burden flow, considered with gas-solid heat exchange and main chemical reaction in shaft furnace, Comprehensive two dimensions mathematics model of shaft furnace is set up for analyzing flow, heat and mass transfer in furnace.

并在此基础上,结合反应固相流动的势流模型,综合考虑气固传热和竖炉内的主要化学反应,建立了竖炉二维综合数学模型,对炉内流动、传热及传质过程进行了解析。

The TiO2 thin film on quartz glass is prepared by Liquid Phase Deposition method. The thicknesses of the films are determined by a spectrophotometer. The influence factors on the thicknesses such as ultrasonic vibration, times of sedimentation, sedimentation time and concentration of TiO2 colloid are investigated. A mathematical model of sedimentation is set up on the basis of gas adsorption theory.A photocatalytic continual tub reactor is set up.

本论文介绍了纳米TiO_2光催化降解甲醛的机理;用液相沉积法在石英基片上制备出纳米TiO_2薄膜,利用分光光度计间接测量TiO_2薄膜厚度,研究了超声波震荡、胶体浓度、沉积时间及沉积次数对薄膜厚度的影响;借鉴气体吸附理论,初步建立了制备TiO_2薄膜的沉积动力学模型。

After analyzing factors impacting the water hammer, the paper set up the water hammer mathematic model, apply character line method and ADINA software to solve model.

本文在分析影响水击因素的基础上,建立了水击效应的数学模型,并用特征线法以及ADINA有限元方法对水击数学模型进行了求解。

Besides, this paper also aims to set out the model of magazine advertising service quality based on the needs of advertisers, and makes use of this conceptual model to evaluate the performances of CTW's revision. With deep understanding of advertisers' evaluation to CTW, it can be figured out efficient ways to raise their satisfaction levels.

本研究以不同学派的IMC模式为理论基础作修正,分析整合行销传播在《时报周刊》杂志改版的应用情形;另外,尝试建构广告主对综合性杂志广告服务品质的评估准则,并以此对《时报周刊》进行评鉴,藉由此一深入研究,以便有效提升广告主的满意度。

Firstly, the relationship between the magnetic pole state of active magnetic pole and the running state of passive magnetic pole was analyzed. The electromagnet's four magnetic pole state and switch sequence, which can drive permanent magnet rotate, were ascertained. Secondly, taking one of magnetic pole state NS (N denotes electromagnet's left magnetic pole and S right magnetic pole) as an example, the distribution of space magnetic field was studied. In addition, the mathematical model of space magnetic field was set up based on the magnetic circuit fundamental and using the method of magnetic analysis and modeling. Lastly, the four states' mathematical model of space magnetic field was solved by using the MATLAB.

首先,分析系统主动磁极磁极状态和从动磁极转动状态之间的关系,确定驱动永磁体转动的电磁体4个磁极状态及切换顺序;其次,基于磁路基本原理,通过磁场分析和建模,以电磁体4个磁极状态之一的NS(N表示其左极、S为右极)为例,对电磁体的空间磁场分布进行研究并建立空间磁场数学模型;最后,以MATLAB为平台对4个磁极状态的空间磁场数学模型进行求解,将求解结果与实验数据进行对比。

Laboratory experiment of multi-pile composite foundation of steel pipe column and sand column ;2. A set of apparatus of foundation physical model was developed and utilized to conduct model tests of sand column composite foundation.

通过自行研发的试验装置,对砂桩群桩复合地基进行室内模型试验,得出砂桩复合地基的一些工作性状:砂桩复合地基的荷载沉降曲线特征、桩和土的应力特点、桩土应力比特点、荷载分担比曲线特征等。

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推荐网络例句

I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。