As a solution for access network , epon ( ethernet passive optical network ) has mature technology and broad application of ethernet . it has a point - to - multipoint architecture and provides multi - service basing on ethernet 以ethernet为基础的epon ( ethernetoverpassiveopticalnetwork ,以太无源光网络)是未来实现宽带、多业务综合接入的重要技术手段,它采用点到多点结构、无源光网络传输,在以太网之上提供多种业务。
Without changing the original screen pixels structure , the new approach presented in this dissertation is a arithmetic about virtual display based on multiplexing of pixels of array - based color fpd , which will raise the white color resolution in horizontal plane by two times 本论文提出的这种方法,是在不改变原来显示屏像素点结构的基础上对阵列型彩色平板显示器像素进行复用的一种虚拟显示算法。利用本算法,可以使白色分辨率在水平方向上提高到原来的3倍。
However , in practical applications , considering cost in constructing the networks or management in networks , users prefer staring networks to net networks which do not meet their requirements . the dissertation proposes the c - dma algorithm to solve this problem , based on fdm and cd . experimental results show that the performance of the c - dma is available and extendable . ( 2 ) in the process of mining association rules , the quantitative attributes exit in databases 但是，在实际的网络应用环境中，用户基于成本和管理等方面的需要，使用的网络结构往往是星型结构的，所以cd算法和fdm算法在网络结构和实际的网络结构不相适应，本文在cd算法及fdm算法的基础上提出以中心结点结构的分布式关联规则挖掘算法，并且从算法分析和仿真试验两个方面证明了算法的有效性和可扩展性。
We obtained the uniform data distribution from discrete data points by inserting spatial dots and then set up digital elevation model ( dem ) of correlative area through constructing mutual linked triangle net . the isoline graph was implemented based on this model . during the processes , we combined the technology of stratification computing when inserting special dots in fault area with the technology of stratification triangle net in fault area for dealing with thrust data 然后介绍了在本研究中构造逆断层地质等值线的基本思路：从离散数据点结构出发，采用空间数据内插方法进行数据的均匀化，通过三角剖分构造出相互连接的三角形网络结构来建立起相关区域内的数字高程模型，利用该模型构造出相应的地质等值线图，其中使用扩展点与断层区的关系属性进行断层区分层空间插值计算处理和断层区域的分层三角形网格化处理相结合的技术，实现逆断层数据的处理和等值线绘制。
This dissertation proposes the c - dma ( center - distributed mining association rules ) algorithm in star structure , and a method of mining multiple layers association rules in distributed databases , a method of mining multiple layers association rules using meta - learning and adjustable method in distributed databases , based on analyses and introduction of the basic concepts and algorithms of mining association rules and mining association rules in distributed databases . after analyzing the quantitative association rules and interestingness of association rules which are encountered often in distributed association rule mining , the dissertation proposes the methods of changing the quantitative attributions into bool attributions using fcm and gene algorithm 本文在分析和介绍了关联规则挖掘的基本概念和方法以及分布式关联规则挖掘方法和技术基础上，提出了中心结点结构的分布式关联规则挖掘的算法( c - dma ) ，分布式多层概念的关联规则挖掘算法，以及分布式元学习可变精度关联规则的挖掘算法；并且，在分析和研究了分布式关联规则挖掘中常见的数量型关联规则、关联规则的兴趣度问题的基础上提出了数量关联规则的聚类划分方法以及兴趣度过滤方法。
Then , an ideal elastic stress - strain relation model is debated to buildup the equivalent load from the development deformation . the potential energy fonctionelle is built with the structural displacements introduced . the optimization equations are built by making the variation of the potential energy fonctionelle be zero 根据有限元方法，引入网格结点结构位移，建立了以单元结点lagrange位移和结构位移表达的变形位能泛函，利用变分法理论建立了使变形位能取极小值的优化模型。
So this base isolation technique has profound prospects . unfortunately there exist definite difficulties in the calculation because of the nonlinear of the base friction force . now , both the equivalent damping method and the numerical calculatin of the vibration response of the base - isolated buildings are frequently used in the calculation of the seismic response of the base - isolated building . however both of them have certain drawbacks . in this paper , the response of the building with base - isolation system is derived by the method of fourier expansion for the friction force and the earthquake response . at the same time , the sliding vibration character of inertia of a single mass structure and the sliding vibration response of a muti - mass structure are discussed . the stable condition of the sliding base isolation system of a structure is given . in the end , two circes of base fixation and base sliding are analyzed by adopting ansys 本文利用对摩擦力和地震响应进行付氏级数展开的方法导出了基底具有摩擦隔震系统的地震反应。同时，文中从研究单质点结构的滑动振动惯性力入手，进而对多质点结构体系滑动振动反应进行探讨，分别给出了结构滑动隔震的自身稳定条件。最后，本文利用ansys对基础固定和基础滑移隔震两种工况进行了动力模拟仿真分析，进一步证实了基础滑移隔规律。
Furthermore , the growth and the study of self - organized quantum dots structures become more and more important recently , and the application of self - organization technique become wider and wider in this thesis , we address the theory of film growth and the growth technique firstly more , the ways and characteristics of surface detection are prescribed we mainly report the growth process , results and discuss of self - organized quantum dots structures in the a12o3 substrates by s - k mode using ecr - mocvd , in the espd - u device the growth art of ain epilayer which is the preliminary foundation of self - organized gan / ain quantum dots structures , including the substrate cleaning , nitridation , the growth of buffer and the growth of gan and ain epilayer , is discussed we deliberately compare the test result of rheed xrd and afm and achieved the optimalized condition of ain at last we have successfully realized the growth of ain which is much smooth and better crystal quality moreover , we grow the self - organized gan / ain quantum dots structure in s - k mode because the limits of the heater temperature , we can not grow the atom - smooth epilayer of ain until now so we could not grow better quantum dots which have small diameter and big density but the self - organized quantum dots structures with better quality will be realized successfully if the substrate temperature is increased the thesis study belong to my tutor subject of national nature science foundation ( 69976008 ) 本论文主要论述了在espd - u装置上，采用电子回旋共振等离子体增强mocvd ( ecr - pamocvd )方法，在蓝宝石衬底上通过s - k模式自组装生长gan aln量子点结构的生长工艺、结果及讨论。而重点分析了自组装生长量子点之前的aln外延层生长工艺，包括衬底清洗、氮化、缓冲层的生长和gan 、 aln外延层的生长；通过高能电子衍射、 x射线衍射和原子力显微镜测试，并且对这些测试结果进行了详细的比较研究，得出了较优化的工艺条件，生长出了晶质较好、表面较平整的aln外延层；进而采用s - k模式自组装生长了gan aln量子点结构。由于实验装置加热炉温度的限制，我们没有能够生长出原子级平滑的aln外延层表面，因而没能够生长出密度比较大和直径比较小的量子点。
