数字信号处理的发展与应用

本文通过概述数字信号处理的发展历程,主要介绍数字信号处理的发展与应用,并展望DSP发展前景。     

高等院校无线数字化校园建设

随着移动技术的发展及无线设备的普及,大量利用手机或其他移动设备接入网络的时代已经来临。高校网络应用无线化已经成为信息化建设的发展趋势。     

有关GIS的架构与应用

随着现代科学技术的迅猛发展,世界将进入以创新为基础的知识经济时代,科学技术将成为经济发展的最重要的资源和首要的推动力,同时更是全球可持续发展战略的核心。站在知识创新的高度、时代的高度、战略地位的高度,发展GIS成为新世纪全球科技信息化的热点。这篇文章针对GIS的架构、以及实用性来简要探讨GIS的重要性。     

谈高校数字图书馆的网络安全策略

高校数字图书馆计算机网络安全面临着诸多威胁。本文提出了一些图书馆计算机网络安全策略，具体有：物理安全策略、网络设计安全策略、网络信息加密策略、访问控制策略、计算机防病毒策略、网络安全管理策略和备份策略。     

Book Review

The diffusion of the Internet is becoming a central policy issue for developing countries, being identified by scholars as a key driver of knowledge, innovation and development. Remarkably, the related literature is scarce and fragmented. In order to contribute to fill this gap, we analyse Internet access and usage patterns in seven Latin American countries. In addition to the traditional socio-economic determinants of Internet access, the results also suggest an important role for network effects, presence of students at households and complementarities in Internet use at different locations. Concerning usage, estimations show that Internet access does not translate automatically into usage. In particular, females are found to be less likely to use the Internet, even once access is provided. Finally, the evidence suggests that while technological skills are necessary to fully exploit Internet potentialities, individuals located in rural areas are more likely to use the Internet for education purposes, confirming the potential connectivity impact on human capital.     

空调系统智能控制器的研究

介绍了一种用于空调自动控制系统的智能控制器。该智能控制器利用单片机技术 ,实现了对空调自动控制系统的自动监测 ,及时反应空调系统的故障 ;利用数字 PID技术 ,实现了对温度和湿度的优化控制 ,达到快速调温、减小温差和降低能耗的目的     

走向深空--测控通信的发展方向

在传统的贸易模式下,我国经济和贸易的快速增长带来很多负面效应, 引起“三高一低”,即原材料的高强度消耗、高度污染、对国外市场的高依赖及低附加值,我国需要“三低一高”的新贸易模式来解决这些问题。本文通过图表和数据说明了旧贸易模式的危害及在旧贸易模式下我国处于不利地位,我国需要转变原有的贸易模式,并总结了将旧贸易模式转变为新贸易模式的途径。     

On the finite sample behavior of testing whether new is better than used of a specified age

Hollander, Park and Proschan (1986) proposed a test of new is better than used of a specified age. It is based on large sample normality of the test statistic. There is, however, no study in the literature on its actual size for small and moderate sample sizes. To shed some lights on this, the results of a Monte Carlo simulation study as well as two real data examples are reported and these indicate that the test can have a quite liberal size, especially for small to moderate sample sizes. In order to improve on this weakness, a modified test is proposed and studied. It is noticed that this modified test seems to over-correct the original test to an extent that it becomes unduly conservative sometimes. Hence we propose another modification that combines the original test and the modified test turns out to have its size quite close to the nominal level and is therefore preferable to both the original and modified tests.     

提高自身素质应对日益深化的高校图书馆数字化发展趋势

建设数字化图书馆是目前我国图书馆的发展趋势,而数字化图书馆对图书馆工作人员提出了新的要求:图书馆工作人员应具备熟练运用网络的技能;应不断加强政治思想素质,增强识别能力;加快知识的更新提高专业技能;改变服务观念,提高图书馆诚信度.     

The Effects of Prior Impressions of a Firm's Ethics on the Success of a Cause-Related Marketing Campaign: Do the Good Look Better While the Bad Look Worse?

ABSTRACT

The exploratory study that is the subject of this paper examines the importance of ten church service and program variables in the decision by members of different age cohorts to join a church. Variables that were investigated included aspects of the worship service; adult, children and senior education programs; and recreational activities. Two additional variables, denominational loyalty and the desire to be part of a spiritual community, were also investigated. Chi-square tests were used to evaluate the significance of each program as well as elements of the worship service. In addition, sources of information that members used prior to the first visit were examined. The most important resource was word-of-mouth. There were 460 respondents who were members of Southern Baptist and Unitarian Universalist churches located throughout the South and Southwest.