一种新的QoS保证的快速组播路由算法

提出了一种新的服务质量保证的组播路由算法。算法使用了一个修改的斯坦利树近似算法来构建时延有界的低代价组播树,再通过最小时延路径与其他尚不在组播树的组内节点连接,并消除环路。理论和仿真表明,新算法与其他一些时延有界组播路由算法一样有较好的性能,并且有较小的复杂度。     

南京市"数字房产"GIS共享平台建设框架

随着信息化的深入，大家都感受到将信息系统应用提升到平台层次。是避免资源浪费．实现数据共享最有效的方法和手段，本文结合南京市“数字房产”的建设，提出了以“层服务模型思想”来构建房产GIS共享平台。详细分析了平台建设的理论基础、总体结构以及数据的组织管理方式，对不同行业间的数据信息共享作出了尝试，     

智能化装载机载重检测设计

通过对装载机作业时的转矩进行分析,适当简化相关参数,建立起一个基本的动力学模型.根据这个模型,采用单片机80C196KB,设计了装载机载重量检测的实现方案.根据装载机故障信息的自身特点,基于GSM(global standard for mobile communications)模块TC35,实现装载机与远程控制中心之间的双向无线通讯.最后给出相关的软件设计,主要分析了其中几段关键的程序流程.通过上述软硬件的设计,本方案实现了对装载机载重量的实时检测,并对过载等故障信息进行处理.由此显著地提高了装载机的可靠性和稳定性.     

基于中间件的企业应用集成

在企业的信息化发展过程中，形成的信息孤岛已成为现代企业信息共享的一个制约因素。笔者对当前企业应用集成的现状、方法及存在的问题进行了分析和讨论，通过结合中间件技术和Web技术特点，探讨了一个基于中间件技术的企业应用集成框架。该集成框架以中间件系统为核心构建分布式应用平台，克服了传统应用集成方法的不足，有效地解决了企业内部的跨平台应用间的集成问题，并为企业发展电子商务提供支持。     

摩托车销售及售后服务管理系统的设计与开发

本阐述了摩托车销售及售后服务企业开发计算机管理系统的必要性，提出了该管理系统的设计思路，并用PowerBuilder8．0实现了计算机管理系统的开发．该系统具有销售、备件、合同管理等基本功能．     

数字化天气雷达强度标定方法

数字化天气雷达的组网观测是天气雷达发展的必然趋势，现有数字化天气雷达提供的强度场必须经过强度标定后再用于组网，因此迫切要求制定数字化天气雷达标定方法。指出了使用标定方程时应注意的量纲问题，针对有关文献中存在的问题提出了解决方法。     

A Study on Forest Species Diversity and Its Ecological Service Function in the Plateau Area of Western Sichuan

This paper presents a study on species diversity and its ecological service function in the plateau area in western Sichuan. The results show that species diversity in the plantations on the cutover land has a tendency to increase and that its ecological service function is to be improved with stand age growing. The species diversity in forest communities is also gradually increased on different succession stage till reaching a climax level. But the species diversity in the climax community is slightly decreased before it reaches a relatively constant status. Ecological service function of diversity is gradually strengthened with the progress of succession. In addition, species diversity in a stand in a similar site and at a same age differs among forest types. Species diversity index within a coniferous and broad-leaved mixed forest is larger than that within a coniferous forest. Meanwhile, species diversity enriches as the tree density increases.     

Contributions of different land cover types in Otindag Sandy Land and Bashang area of Hebei Province to the material source of sand stormy weather in Beijing

Different land cover types in Otindag Sandy Land and Bashang area of Hebei Province are linked to a material source of sand stormy weather in Beijing based on results of field vegetation and soil survey and laboratory works. Results of grain size analysis show that dust release potential in per unit area of moving sandy land is small,while lowland meadow and meadow steppe in stony hills have high potential of releasing dusts in per unit area during sand stormy weather occurrence. Further considering the effects of vegetation, it is inferred that the moving sandy land served as a material source of past dust storm and the possibility of dust release in per unit area is low in current time.Typical steppe in stony hills is undergoing desertification and its dust release possibility in per unit area is high. Farmland has strong potential of release dusts when they are ploughed in spring, but a large amount of therophytes grow and thus prevent dusts from release when cultivation was terminated.Potentials of dust release in per unit area in fixed sand dunes,stony mountain meadow steppe and low land meadow are lowdue to high cover of perennials. Sand dune reactivation and desiccation of lakes and lowlands under estimated future climatic change will make them serve as a future material source of sand stormy weather.     

ASP开发信息服务系统示例

随着网络技术的迅猛发展，ASP已成为Web应用程序的一种重要开发工具。用ASP(Active Server Pages)技术创建的此信息服务系统分为前端的客户信息浏览、查询和后台的数据库维护两大部分。对数据库设计，程序设计和实现，系统安全进行了详细论述。     

网络时代高校图书馆流通服务的应对策略分析

网络时代的到来已经是个不争的事实，给传统的图书馆带来了机遇和挑战，也为图书馆的发展带来了新的发展契机，这就要求我们正确认识，迎接挑战；拓宽思路，提高流通服务的质量；加强馆员自身素质培养，适应新的服务领域。