The model was more concise and more variable than before and much easier to be created and analysed . at last we drew a conclusion that our model was proved to be available , correct and healthy 本论文的重点:使用着色petri网和cpntools建模工具,对在微通信元系统架构中采用虚电路进行数据通信的方式,进行了建模分析验证,得出了预期的结论。
While , the mces as a layerless network , can conquer the above problem , become more simply and has higher efficiency . mces is virtual circuit based network architecture . every node in mces shapes traffic to avoid congestion 服务元系统构架采用虚电路结构,在节点上使用优先级调度算法并进行通信量整形以避免拥塞发生,可以很好地解决服务质量问题。
The influences of the compositions and heat treatment temperature on the refractive index of sio2 - zro2 gel glasses were also investigated . after treated at 150 , the refractive index of sio2 - zro2 gel glasses could be adjusted in the range of 1 . 438 - 1 . 546 by altering the zr content 经150oc热处理的5102一zro :二元系统凝胶玻璃，其折射率可因zro :含量的改变，实现在1 . 438一1 . 546范围内调控。
The establishment of cpn model proves the reliable data transfer service which based on the mces in petri nets theory for the first time , the simulation model ’ s design and validate is a helpful reference for our later task to validate the protocol in theory 因此本文的模型实现起来简单易理解。仿真模型的建立从网论的角度验证了服务元系统构架下的可靠传输服务,并为从理论角度论证协议的正确性提供了较好的参考。
According to its main tasks , there are two kinds of decision technique are discussed in this article : one is about safety ensure technique during the flood season , another is about disasters prevention and cure technique . the contents including three parts . in the first part , the structure and the run mode of the rainfall alarm system , the index system and the way of setting up the alarm standard are discussed systematically 本文将可拓学基本理论与铁路泥石流防治理论相结合，建立起铁路泥石流灾害物元模型，形成铁路泥石流灾害各种防治技术的可拓语义表述，提出了面向物元系统的铁路泥石流灾害防治方案的设计思想，并就方案的比选和优化方法作了一定的探讨。
The main factors that influenced the film thickness and refractive index have been found . the relationship between the film refractive index and compositions of system > heat treatment temperature has been built . the continuous regulation of the thickness and i refractive index of the thin films has also been realized , which will open up new possibilities in the development of active optical waveguides 研究了zro _ 2 ? sio _ 2二元系统凝胶玻璃中，体系组分、热处理温度等对系统折射率的影响，确认了影响zro _ 2 ? sio _ 2二元系统薄膜折射率和厚度的几个主要因素及相应的控制技术，探明了薄膜折射率与薄膜组分、热处理温度的内在关系，实现了薄膜厚度和薄膜折射率在一定范围内的连续可调，为研制一类新型的通信窗口有源光波导材料提供了基质材料的设计思想、制备技术和必要的理论积累。
In zro2 - sic > 2 binary oxide thin films , the refractive index of films will also increase with the increase of zro2 content . but the linear relationship between refractive index and zro2 contents was hardly found in films , since there are lots of residual water and organic compounds in films without heat treatment 在zro _ 2 ? sio _ 2二元系统薄膜中，随着zro _ 2含量的增加，薄膜的折射率也随之增加，但因未经热处理的薄膜样品中存在大量的水分和有机组分，组分和折射率偏离了线性关系。
The mathematics definition and application scope of the petri net and colored petri net were systematically introduced . we modeled and analysed the virtual circuit communication in micro communication element architecture using cpn and cpn emunation tools and analysed the emunation and state space in detail for the first time . during the procedure we took a new and more brief way to analyse and define the model 本文系统地介绍了petri网和着色petri网的数学定义和应用范围,以及建模采用的仿真工具cpntools 。第一次对微通信元系统架构的虚电路管理模型进行了建模验证和分析,并进行了详细的仿真分析和状态空间分析。
The third one is about the research and design of the host system , which is based on the mces . it is composed of the socket management module , the service unit management module , the qos ( quality of service ) module , the nic ( network interface cards ) module and four class service units . all the modules , service units , the data 第三章详细介绍基于微通信元系统架构的主机系统的研究与设计,包括主机系统的总体设计、套接字管理模块、服务元管理模块、服务质量管理模块、网络接口管理模块、第一、二、三、五类服务元、数据包格式和主机系统的处理流程等内容。
In tranditional ip network , only the “ best effort ” service is provided , but the quality of service can not be guaranteed . though the interserv , deffserv and mpls are presented afterward to guarantee the qos for the ip network . but as a layer network , the realization of the qos function need span different layers ( such as rsvp protocol ) in the ip network , which may result in the function iterance and chaos 多媒体和实时业务的出现要求网络能够提供足够的qos保证,在传统的ip网络中只能提供“尽量传输”的服务而不能保证服务质量,后来提出的综合服务模型( interserv )以及区分服务模型( deffserv )以及mpls技术保证了ip网络上的服务质量,但由于ip网络是层次结构的网络,因此对qos的支持需要跨层(如rsvp协议) ,这就可能引起功能的重复和混乱,而微通信元系统是无层次结构的网络系统,就克服了这些的问题,变得简单,效率更高。
