Ad hoc网络运动模型及其连通强度相关性的研究

介绍了现有的几种ad hoc运动模型，提出了一种ad hoc连通强度的评价公式，并对三种常用的运动模型进行了仿真。利用Boltzmann函数对仿真数据进行曲线拟和分析，得到三种运动模型各自的节点数、传播范围和连通强度的曲线函数，为实际的ad hoc组网提供了明确的评判依据。     

Study on Service Level Management in Integrated Satellite Information Network

Integrated Satellite Information Network (ISIN) includes those nodes in space and those on ground. It is the way to realize the fusion of satellite communication and traditional network technology. A satellite network management system based on Multiplex Network Management Protocol (MNMP) has accomplished traditional management, such as configuration, performance and fault management. An architecture of Service Level Management (SLM) in ISIN is proposed, and a service topology management and Service Level Agreement (SLA) are deeply researched. At last, service security and fault management are briefly discussed, and a simulation system is accomplished.     

A Hierarchical Sensor Network Based on Voronoi Diagram

A hierarchical sensor network is proposed which places the sensing and routing capacity at different layer nodes.It thus simplifies the hardware design and reduces cost. Adopting Voronoi diagram in the partition of backbone network,a mathematical model of data aggregation based on hierarchical architecture is given. Simulation shows that the number of transmission data packages is sharply cut down in the network, thus reducing the needs in the bandwidth and energy resources and is thus well adapted to sensor networks.     

电子政务项目后评价指标体系初探

电子政务项目后评价是电子政务绩效评估体系的有机组成部分。本文概述了电子政务项目后评价工作的目的、意义,在此基础上,对电子政务项目后评价工作的实施及其评价指标体系的建立进行了初步研究和探讨,提出三级电子政务项目后评价指标体系框架,并给出了指标权重的确定方法。本文的内容对深入研究和构建适合我国国情的电子政务绩效评估体系有一定的借鉴意义。     

卫星综合信息网服务级管理的研究

卫星综合信息网是一种天地一体化网络，是卫星通信与传统网络技术融合的必然发展趋势．空间中的卫星以及星地通信链路都是高成苯的网络资源，如何充分利用有限的网络资源、保证服务质量则是研究这类网络时必须考虑的问题．本文为解决这一问题，提出了卫星综合信息网服务级管理的体系结构，并着重对服务拓扑管理、服务一致性管理进行了深入的研究，同时概括性的提出了服务安全管理和服务故障管理的模型．文章最后建立了卫星综合信息网服务级管理演示验证系统，对文中提到的服务拓扑算法的有效性进行了验证．