At last we study the network surviving problem in wdm network with partial wavelength conversion . based on the layered graph , a routing and wavelength assignment algorithm based on qos in survivable wdm network is proposed . this results show that this algorithm can not only meet the different qos requirements of the client layer ’ s service , but also utilize the finite networking resources efficiently with the reduced blocking probability 首先研究了部分波长可变wdm网状网中的网络生存性,而后结合分层图模型提出了一种在动态业务情况下的支持不同qos要求的路由波长分配算法,仿真结果表明该算法具有很好的性能,提高了全网的资源利用率,满足了客户层业务在建立光通路时不同的qos要求对网络阻塞率的要求。
In this thesis , firstly , the basic conceptions and existing algorithms for rwa problem are introduced ; secondly , a research is made on a dynamic routing and wavelength assignment algorithm in wron considering wavelength relation in order to reduce the resources in networks , the blocking probability and the cost of wavelength assignment 本论文首先介绍了rwa问题的相关概念及常见算法;接着对动态业务条件下具有波长变换能力节点的波长分配算法进行深入研究。基于节约网络资源和降低网络的阻塞率和波长分配代价的思想,在wron网络的动态路由波长分配算法中考虑波长相关性。
Simulation results show that the developed scheme performs well in terms of qos performance metrics such as the lightpath hop length and the network maximal link load . for ip over wdm networks consist of oxcs and routers , which are inter - connected by optical fibers , chapter 3 presents a novel routing and wavelength assignment algorithm based on k - shortest path 对于由大量路由器和oxc通过光纤互连而组成的ipoverwdm网络，第三章创新性地提出了将ip层矛咣层综合考虑进行：路由选择，并利用k ? ?最短路由对有长度限制的请求进行资源分配的算法。
In this paper , we describe the study background , meaning and methods of passive acoustic detective network , summarize the basic theories and methods of target tracking and data association , analyze some tipical data association algorithms include the nearest neighbor algorithm ( nn ) , probabilistic data association filtering ( pdaf ) , joint probabilistic data association filtering ( jpdaf ) , multiple hypothesis tracking ( mht ) , and multidimensional s - d assignment algorithm . 2 . in detective network , sometimes a surveillance region have only single sensor 从整体上描述了无源声音探测网络的研究背景、意义、基本框架和研究方法，概述了目标跟踪与数据关联的基本理论与方法，重点分析了几种典型的数据关联方法，包括最近邻方法、概率数据关联滤波器( pdaf ) 、联合概率数据关联滤波器( jpdaf ) 、多假设跟踪( mht )以及多维s - d分配算法。
Security constraints are consistent by modifying security constraint definition , and an effective classification assignment algorithm is given in this paper . we analyze the problem of inference channel and give solution to solve the problem during database analysis and design period . by analyzing the problems resulting from extending single - level transactions to multilevel transactions , we also give a multilevel secure transaction schedule algorithm based multiversion snapshot graph 本文提出采用主从结构表的方法对blp模型加以改造，使得改造后的blp模型具有较高的可用性和安全性；通过修改安全约束的定义，使得安全约束之间始终是协调的，并给出一种高效的密级分配算法；讨论了推理通道问题，给出了在数据库分析、设计等阶段可以采用的对策；分析了事务从传统的单级扩展到多级面临的众多难题，给出了一种基于多版本串行化图的事务调度算法；根据上述理论，开发了一个多级安全数据库管理系统的原型系统。
Next , a novel priority - based wavelength assignment algorithm in all - optical networks with partial wavelength conversion is proposed , based on link independent assumption and the method of calculating the network the blocks probability . it improves the routing and wavelength assignment presented by others . this algorithm fits the demand of different business for asking the grade of corresponding different services in the modern all - optical network than the original algorithm 其次研究了部分波长可变wdm网中支持优先级的波长分配问题,以及在此网络中网络阻塞概率的计算;基于链路波长占用独立性假设,改进了在部分波长转换wdm网中已有的rwa算法,提出了一种支持优先级的动态波长分配算法,该算法保证了较高优先级的光路建立请求具有较低的阻塞率,比原有算法更加适合现代光网络中不同业务请求对应不同服务等级的要求。
