最优法

First, this paper presents three girders model with double cable planes which main girder and side girder is connected by rigid arms, analyzes the dynamic characteristic of Yonghe cable-stayed bridge and obtains its natural vibration modes (i.e., frequency, damping values and the mode shapes ) by ANLSIS structural analysis program and uses these parameters as dynamic dactylogram of the intact case of cable-stayed bridge. Using the passage of random as the ambient vibration ,the dynamic properties of Yonghe Bridge is measured and the modal parameter of its 15 years after is identified and used as dynamic dactylogram of the damaged case. By the finite element analysis and locale vibration test, damaged and undamaged modal parameter is analyzed and curvature mode shape, which is sensitive to damage state, is introduced as possible candidate for identifying and locating damage in the cable-stayed bridge. Selecting the branch of part measured point from modal parameter, this paper deduces the damaged index which can detect the possible damaged location of the cable-stayed bridge deck and identifies the damaged region and degree for Yonghe Bridge. For the purpose of structural condition monitoring in in-situ , from another viewpoint, this paper introduces the method called the best optimization vector to detect damaged location and degree. The accuracy and reliability of the method presented in this paper are demonstrated by static analysis and test and the healthy state of Yonghe Bridge can be evaluated.

建立了双索面通过刚臂与主梁及边梁相连的三梁式力学模型，采用ANSYS结构分析程序对永和斜拉桥进行动力分析，对其振动模态参数进行识别，以此作为斜拉桥完好状态下的动力&指纹&；采用自由交通流作为环境振源，对永和斜拉桥动力特性进行测试，识别出永和斜拉桥使用15年后的模态参数，确立了破损状态下的动力&指纹&；利用有限元分析、现场振动测试，对破损前后的模态参数进行分析，提取对破损状况较敏感的模态曲率作为斜拉桥破损诊断的参数；并从模态参数中选取部分点的分量，导出可以指示斜拉桥桥面大概损伤位置的Index损伤指标，识别出斜拉桥发生破损的区段及破损程度；考虑大型斜拉桥在线监测要求识别破损的具体位置，从另一角度提出采用最优矢量法具体确定破损发生的位置及程度；为验证本文研究成果，对永和斜拉桥进行静力分析及静力测试，对其健康状况提出可靠的评价。

The optimized formula was obtained by the fictitious target method and multi property policy making method in the multi target optimization method based on the property composition regression equation of EPDM formula.

根据EPDM配方性能组分回归方程式，应用多目标优化方法中虚拟目标法和多属性决策法寻求最优配方。

With queuing theory, the problem of the organization of the earthwork construction is solved in the Violet Gold Garden project with reverse construction method and the curves on efficiency and cost are given to make the machine disposition optimized economically.

结合天津市紫金花园工程&逆筑法&土方工程施工组织，运用排队理论解决土方挖运的施工组织问题，并得出在一定施工组织下土方开挖的效率和成本曲线，保证日出土量与机械配置在经济上达到最优。

In orde to obtain system optimization in high efficiency production and operation safety, the microcosmic problem of goaf treatment was brought into the creative design of mining method and the synergism of two problems was studied. Firstly, in view of the occurrence characteristics and mining conditions of catacalstic ore section of orebody No. 105 in Gaofeng mine in Guangxi province, considering the adaptability to different scale goafs in the ore section, based on mining environment reconstructing idea and continuous mining mode, a new mining method (mining environment reconstructing non-pillar sublevel-strip continuous mining method) was put forward. Then, some repr, esentative goafs were selected and their stabilities were calculated by discrete element method on the basis of differences of goaf scale, surrounding conditions and situ stress field. At last, the mining layout was adjusted on the basis of goafs stability analysis and the goafs were adjusted as a part of cutting engineering, blasting space or stope, so as to determine all kinds of goafs treatment schemes.

摘 要：为在生产高效和作业安全上取得系统整体最优，将碎裂矿段的空区处理微观问题纳入采矿方法创新设计宏观问题中，开展2种问题的协同研究：首先，针对广西高峰矿105号矿体碎裂矿段的赋存特点和开采技术条件，考虑对各种规模空区适应性，基于采矿环境再造和连续采矿理论，提出采矿环境再造无底柱分段分条连续采矿法；然后，根据采空区规模、围岩状况和原岩应力场等条件的差异，在所有采空区中选择具有代表性的空区，运用离散元程序对其稳定性进行计算分析；最后，在稳定性分析的基础上，灵活调整开采布局，将采空区调整为部分切割工程、自由爆破空间或采场，从而确定出各种规模空区的处理方案。

Heat and time adjustment of spot welding process are made through the best fusion arithmetic adapting combined,average and decision-making methods.

采用结合法、平均法和决策法相结合的最优融合算法，实现了点焊过程热量调节和时间调节。

The insect pest and natural enemy communities in Red Fuji apple orchard in Mouping District of Yantai City were quantitatively analyzed by multivariate analysis.

应用多元分析方法对烟台市牟平区红富士苹果园害虫与天敌群落进行了定量分析，采用最优分割法将苹果害虫与天敌群落的时序结构分为5个阶段，并分析了各个时序段害虫及天敌的发生特点。

Results show that:(1) X-ray fluorescence spectrometer is the best method to detect total concentration of heavy metals in eco-cement.(2) Solid waste-extraction procedure for toxicity of solid waste is not suitable for cement system.(3) Long-term leaching test can be used to predict the long term leaching characteristic under certain situation.

试验结果表明：(1)荧光光谱法是最优的总量测定方法；(2)目前我国常用的浸出毒性测定方法不适用于水泥体系；(3)长期浸泡方法可用于测定特定条件下重金属的长期浸出性。

Mathematical model of the higher four level inverted pendulum is particularly educed in this paper.

其次，本文主要研究了倒立摆系统的各种控制方法，包括现代理论控制方法（极点配置法、线性二次型最优控制）、滑模变结构控制方法、两种智能控制方法。

Strategy for designing optimal bounded control to minimize the response of quasi partially-integrable Hamiltonian systems with stochastic excitations is proposed based on the stochastic averaging method for quasi partially-integrable Hamiltonian systems and the stochastic dynamical programming principle.

本文提出了一种基于拟部分可积Hamilton系统随机平均法和随机动态规划原理的最优有界控制策略。

Allowing for the characteristics of high-medium voltage distribution system, the SA is modified as follows: using remembrance-guided search method, and modifying the quasi optimum value by pattern search.

结合高中压配电网的特点，本文对SA进行了改进：采用记忆指导搜索方法，并采用模式法修正局部最优解。

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。