Based on plate loading test in - situ , the method of geddes " formula , finite element method and the relative theory of method of code , the paper makes a thorough study on the bearing capacity and settlement of vertically loading cast - in - situ piles with expanded branches and plates , and the major results are as follows : ( 1 ) based on the results of plate loading test in - situ , the single pile settlement behavior is analyzed . it is pointed out that its load - settlement ( q - s ) curve as tardy deformation 本文结合现场静载荷试验、 geddes公式法、有限元法和《规范》法中的有关理论，对挤扩支盘桩在竖向荷载作用下的承载力及沉降进行了研究，主要表现在以下几方面： ( 1 )在现场静载荷试验结果的基础上，分析了挤扩支盘桩单桩沉降特征，指出其荷载沉降( q s )曲线为缓变形。
This thesis puts forward a systemic method to analyze stability of bridge bank slope in gorge area . it includes elementary field geological evaluation , calculation of stable angle of bank slope with empirical formula , simulation of slope stress state with fem and rockmass strength judgement . then rational laying position of bridge piers can be confirmed 本文提出了峡谷区桥基岸坡的稳定性分析的系统方法，包括野外初步地质评价、经验公式法确定岸坡稳定坡角、岸坡应力场的有限元模拟及强度分析，进而综合评价岸坡稳定性，并确定桥基合理埋置位置。
Key technology of pv system is checked , especially methods of battery monitoring are explored . three monitoring methods of charging state are presented : the method based on battery on - line voltage monitoring , the method based on battery off - line voltage monitoring and the method based on formulas 对蓄电池的监控技术的关键是蓄电池荷电状态的检测，本文探讨了三种检测方法：一是基于蓄电池在线电压检测蓄电池荷电状态；二是基于蓄电池稳态开路电压检测蓄电池荷电状态；三是公式法。
They are jet formula method , cfd method and model experiment method considering the great many merits of cfd method such as easily applying to complex geometric , independent of experiential parameters and easily simulate for many conditions and so on , this thesis use cfd method to study of the air distribution of certain pratical project 对于地下电站高大厂房气流组织的研究目前有三种方法：射流公式法、 cfd方法、模型实验法。 cfd方法以其易于适用复杂几何形状，不依赖经验参数，易实现多工况模拟等诸多优点而倍受青睐，因此，本文采用cfd方法对某一实际工程进行了气流组织研究。
The first is the structure design of quartz capsule , firstly discusses the characteristics of different structure scheme ; secondly calculates the size parameters using both ways of finite element and experience formula , analyses and contrasts the calculated results ; in the end , fixes quartz capsules structure size by optimizing the size parameters 首先论述了不同结构方案的特点，然后采用有限元方法和经验公式法两种方法进行了尺寸参数的计算，对两种计算方法的计算结果进行分析对照，根据上述结果进行尺寸参数的优化选取，最终确定石英压力传感器的结构尺寸。
The attenuation indexes of vertical direction components and level radial components of blast earthquake wave in the condition of far range are all larger than the one in the condition of close range . based on upwards analysises , relevant control ways and safety defending technology of blast vibration are given from the aspects of blast equipments , blast parameters , landform physiognomy , blast methods . and taking the practical data from blast scene as the sample , the blast shockproofness are forecasted by the feedforward nerve network model based on the prior knowledge of blast shockproofness , the regress analysis method and experience formula method , which supply the technology gist for 并且,以爆破现场的实测数据为样本,采用基于爆破震动强度先验知识的前馈网络神经模型、回归分析法及经验公式法分别对爆破震动强度进行了预测研究,为爆破施工参数的确定提供了技术依据,确保整个爆破工程顺利安全进行,并对这三种方法的预测结果进行了对比分析;对比分析表明,三种预测方法计算出来的结果精度相差甚大,从检验样本值与预测结果值之间的相对误差可以看出,人工神经网络法预测的结果较其他方法更接近于实际值,回归分析预测法的精度又要高于经验公式预测法。
In order to solve this contradiction , reservoir engineering methods are used to estimate the exploitation process about the block , which including water drive curve method , the correlation experience method , the method of the flow pipe budgetary estimate and the method of well net density . on the basis of these method , the author studied the macrocospical distributing of remaining oil in each layer 针对单元开发过程中存在的突出矛盾，运用水驱曲线法、相关经验公式法、流管概算法、合理井网密度法等油藏工程方法对断块的开发历程进行评价，在此基础上进行各小层剩余油的宏观研究。
Since there are only few papers about the topic , the simulating result have no alternative but to compare with the data of the upper inhomogeneous terrain . the similar trend is found for the two results , and larger propagation attenuation will follow the higher frequency or larger conductivity of the medium 由于有关覆盖层传播方面的文献资料几乎没有，所以只能把结果与地表均匀岩层的数据进行比较，结果表明平面波法和通信公式法计算得出的结果完全一致，并与在地表均匀岩层传播结果趋势类似，而且随着频率的增高或导电率的增大，传播衰减也增大。
( 2 ) the three numeric methods , including formula method , histogram method and feature vector method , of calcucation invariant probability distribution for chaotic map is derived , and their characteristics are discussed each other , these results of the computer simulation are in agreement with those of theoretic analysis . ( 3 ) the principles and methods of chaotic communication are reviewed and commented systematically . first , several main chaotic synchronization methods are discussed , then the methods and ways of chaotic communication are explored , including analogue chaotic communication , digital chaotic communication and direct chaotic communication . this is the article basis , and it startes from follow - up case study 所做的工作总结如下： ( 1 )综述了混沌现象及其理论的相关问题并对码分多址通信系统的扩频地址编码与混沌序列、混沌同步与系统保密性等问题作了讨论； ( 2 )研究了计算混沌映射不变分布的三种数值方法，即：公式法、直方图法以及特征向量法，并比较了各自的优缺点，计算机模拟结果与理论分析结果相符。
