分类系统

Show model combines growth model, math model and VR technologies to design the proper object structure of each organ of virtual plant. First of all,research background, research content of virtual plant area and Virtual Reality technology are introduced. The concept of VR and research content of virtual plant are defined. Secondly, we analyze math model of virtual plant, including Bezier curve, NURBS curved surface, fractal system, L-system and Catenary curve. Thirdly, we give show model of virtual plant in detail. Finally, the design of the platform and growth model on XML script is introduced , and how to show the virtual plant in the platfrom is discussed too.

本文首先介绍了虚拟植物领域的研究背景、研究内容和虚拟现实技术，明确了虚拟现实的概念和虚拟植物的研究范畴，然后介绍了虚拟植物器官的数学模型，对各个器官展开了拓扑结构分析，建立有针对性的数学模型，先后介绍了Bezier曲线，NURBS曲面，分形系统，L-系统和悬链线曲线，接着详细分类介绍了虚拟植物器官的显示模型，最后介绍了虚拟作物平台的设计，平台中基于XML脚本的生长模型，以及虚拟作物在作物平台中的显示。

Chapter 5 concerns the number of limit cycles for a cubic Hamiltonian system under cubic perturbation.

第五章给出了只关于一个轴对称的三次哈密顿系统的分类，研究了三次哈密顿系统在三次扰动下的极限环的个数与分布。

In the aspect of hierarchical fuzzy systems, their classification, universal approximation, equivalency, analytical expressions and performance are studied.

对分层模糊系统的分类、通用逼近性、等效性、解析分析和性能分析进行了系统的研究。

And then, in the foundation of the overseas scholars'study, I study RP and the CRP methods for visualization the dynamics characteristic of the phase space track as well as the complexity degree algorithm of chaos time series——ApEn algorithm. Applying these two methods based on the VB program we analyze separately the data which is obtained from complex financial system model and Lorenz system, and obtain several new recurrence plots and cross recurrence plots. This provides the graph gist of determination complex intrinsic characteristic. The results establish the foundation for exact and further division of chaos time series.

接下来，在国外学者研究的基础上，基于混沌时序形象化相空间轨迹的动力学特征的分别研究了RP和CRP方法以及判定混沌时间序列的复杂度算法的ApEn算法，基于VB程序应用这两种方法分别对Lorenz系统及实际的一类复杂金融系统模型所得到的数据进行了分析，得到了几个较为新的复原图和相干复原图，这对于判定时序数据的复杂内在特性提供了图形上的比对依据，研究结果为混沌时序的准确和进一步分类奠定了基础。

Sixth, the protection of residential areas during construction and the use of solid waste collection sector is the quality of the environment without damage; through the separation and collection of urban solid waste treatment system optimization provide conditions; district to carry out the cycle of food waste treatment use, carry out garbage Resource Recycling, diversion of municipal solid waste treatment system pressure; to encourage the district improve solid waste management and collection facilities, optimizing the living environment.

第六，保护住宅区在建造和使用固体废物收集部门是环境质量无损害；通过分类收集的城市固体废物处理系统优化提供了条件；区进行循环的食物废物处理利用，开展垃圾资源回收，挪用的都市固体废物处理系统的压力；鼓励区提高固体废物管理和收集设施，优化生活环境。

Based on the research of the knowledge type, the author puts forward the Database-based knowledge representation, this method makes the database have the knowledge base function, make the knowledge representation and the knowledge management easy.

在对系统中知识组成分类研究的基础上，对应用于该系统中的基于数据库的知识表达模式进行了深入的探讨，该方法的应用，使数据库具备了知识库的功能，方便了知识的描述、知识数据库的管理。

Brings forward data classification model and hierarchical structure management model on the basis of analyzing the data types that needs to manage.

描述了PDM系统在企业中的应用和结构与配置管理在产品信息管理系统中的作用，分析了产品结构与配置管理的功能特点，并根据管理数据的类型，提出了数据分类组织和结构分层管理模型，同时简述了数据建模时应该兼顾的主要问题，最后给出了结构与配置管理模块的结构模型。

This dissertation is relation to SrO(La2/3Sr1/3MnO3)n the manganese oxides with RP structure. We mostly studied the structure and electrical transport properties, The major studies are listed below: The classes of magnetoresistance were introduced, the electron and crystal structure and the mechanism of double exchange of manganite pervosike related to colossal magnetoresistance have been summarized. More attention had also been paid to the advance in the study of RP structure manganite and grain system. The principle and process of sol-gel method were introduced. With sol-gel method a series of different grain size La2/3Sr1/3MnO3 sample were prepared.

本文以Mn3+：Mn4+=2：1的Ruddlesden-Popper结构锰氧化物SrO(La2/3Sr1/3MnO3)n为研究对象，系统的研究了利用溶胶-凝胶法制备的n=∞的La2/3Sr1/3MnO3和n=2的La4/3Sr5/3Mn2O7两个系列样品的结构和电磁性质，主要内容包括以下几点：简单介绍了磁电阻效应的分类，概述了具有超大磁电阻效应的锰基钙钛矿氧化物的电子晶体结构和双交换等相关的物理机理，给出RP结构系列锰氧化物的晶体结构和电磁相图以及研究状况，分析了颗粒系统的研究进展。

Based on the dual-beam interference principle and white light interference feature, this dissertation designs the SWLI surface 3D topography measuring system and analyzes the principle and characters different from that of traditional monochromatic light interference. According to different descriptions of the white light interference feature, the optimal interference point extracting algorithms are classified, analyzed and compared in detail. In the light of the design rule of improving measuring precision and speed simultaneously, two new types of algorithms, named Feature Matching algorithm and Intensity Contrast Moving Window algorithm, are designed to acquire good results according to practical conditions.

基于双光束干涉原理及白光干涉特性，本文设计了扫描白光干涉法表面三维形貌测量系统，分析了该方法区别于传统单色光干涉测量的测量原理及特点，根据对白光干涉特征不同的描述方式对最佳干涉点提取算法进行了分类、分析与比较，并在提高测量精度与测量速度设计原则的指导下，根据测量系统的实际条件设计了两种新的算法：特征匹配法和对比度移窗法，在实际测量中达到了比较好的测量效果。

It can be divided into two chapters.In chapter one ,we state a few usual notations,definitions and basic results.In chapter two, we first establish a Morse index theory for 2p-order linear Hamiltonian systems.Then as applications of the index theory ,we discuss nontrivial solutions for nonlinear Hamiltonian systems by making use of Leray-Schauder degree theory and Morse theory.

全文分为两章：第一章中给出了本文所要用到的一些基础知识和一些常用的记号；第二章先建立了线性2p-阶Hamiltonian系统的指标；作为此分类指标的应用，结合Leray-Schauder度理论及Morse 理论，讨论了渐近线性系统的非平凡解的存在性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。