SQLite数据库在Windows Forms应用开发中的应用研究

简要介绍了SQLlite数据库的特点、工作原理、开发环境下的安装和基本函数的调用。往往一些Windows Forms应用程序只需要小型数据库。结合其特点,探讨了SQLlite在Windows Forms应用程序中的实现。     

ECONOMIC INFRASTRUCTURE: A REVIEW OF DEFINITIONS, THEORY AND EMPIRICS

Infrastructure investment, especially in South Africa, is currently at the forefront of policy and public debate. But the term ‘infrastructure’ has a variety of definitions and interpretations; the reason for the various definitions is related to infrastructure's various impacts and incidence. Three levels of infrastructure are identified: local, national and transnational. Infrastructure at all three levels are subject to certain market failures which require some form of government intervention. Furthermore, theory postulates a number of benefits from infrastructure, both on economic growth and equity. Both the quantity (access to infrastructure) and quality (reliability of infrastructure or accompanying services) are important. Finally, empirical analysis tests whether these theoretical benefits are indeed realised. However, it seems as though infrastructure empirics are subject to a number of serious limitations.     

Comparing Investments in New Transport Infrastructure: Roads versus Railways?

This paper contributes to the debate on investment in transport infrastructure and the allocation of public funds between road and railway projects. We model the two options and provide a consistent framework to appraise investment in typical new inter–urban road and rail projects. Our results suggest that road improvements have substantially higher returns than railway schemes. These findings cast doubt on the rationale of the new transport policy for the UK, which proposes to allocate more public funds to the (private) railways than total new investment in strategic roads.     

Tourism and urban public transport: Holding demand pressure under supply constraints

Scholars and local planners are becoming increasingly interested in the contribution of tourism to economic and social development. In the European cities that currently lead the world rankings for tourist arrivals, local governments have actively promoted tourism. Mobility is an essential issue for tourists visiting large cities, since it is a crucial factor for their comfort. It also facilitates the spread of benefits across the city. This study uses an international database of European cities to examine whether city planners respond to the additional demand for urban public transport by extending service supply. Our results confirm that tourism intensity is a demand-enhancing factor in urban public transport. However, cities do not seem to address this pressure by increasing services. Tourism appears to exert a positive externality on public transport, since it provides additional funding for these services, but it also imposes external costs on resident users because of the congestion caused by supply constraints.     

主机日志分析与研究

系统日志又称为主机日志，由操作系统自动生成，与操作系统行为密切相关。它记录了系统发生的各种事件，日志对于系统的安全具有非常重要的作用。文章介绍了日志的概念以及Windowsi机和linux系统日志，并分析了日志的特点，阐述了三种日志分析的方法，并对这三种研究方法进行了比较。     

车辆数不确定的时间窗车辆路径问题的小生境混合遗传算法

建立了优化的多目标带有时间窗的车辆路径问题模型,提出一种小生境混合遗传算法。算法采用混合并行选择方法、最优保留策略以及随机权重适应值函数,克服遗传算法固有的搜索能力差和“早熟”等缺点。实验结果表明,该算法对于解决车辆数不确定的时间窗车辆路径问题提供了一个非常有效的求解方法。     

Windows95/98系统的维护与管理

针对高校学生用机中存在的问题 ,从维护和管理的角度提出了一些措施和办法 ,包括系统的备份和一些参数的设备     

基于Windows CE的GPS应用

本文介绍了Window CE串口读写以及GPS报文解析。阐述了串口读写数据的实现过程，并以GPRMC报文为例，说明从报文中提取有效数据的过程。     

用Win98实现局域网中的Internet共享连接

通过介绍“Windows98第 2版”里作为标准组件而集成的“Internet连接共享服务”( ICS) ,利用 Windows 98提供的 Internet连接共享 ,实现局域网中所有安装了Windows95 /98的计算机共享网络中已有的 Internet拨号连接。     

Windows 2000的安全机制剖析

操作系统的安全性是操作系统的核心问题之一。文章主要从访问控制的角度，结合windows NT到Windows 2000的发展过程，通过分析Windows2000安全机制中不同层次的组件，如安全描述符、访问控制列表、访问令牌、访问掩码等，逐步深入地探讨了Windows 2000是如何强化其安全机制的。