基于3G技术的移动数字图书馆研究

第三代移动通信技术（3G）的发展给人们的生活带来了巨大的影响,数字图书馆利用3G技术能为用户提供更多的便利。分析了3G技术应用于移动数字图书馆的优势,论述了3G移动数字图书馆的架构体系,并对建设3G移动数字图书馆面临的问题进行了探讨。     

C/S架构分销系统的扩展

服装连锁店的规模越来越大,许多企业使用了分销系统来对之进行管理,但是服装零售业的发展又给系统的使用带来了问题,主要问题在于单一的终端机无法满足多品牌经营管理,无法满足频繁的销售开单,迫切需要能够自由增减终端机数量,又能保证对这些终端进行统一的管理,并且保证数据的统一.本文针对以上问题,提出了对传统分销系统的客户端进行扩展的解决方案,从而使系统能够满足对连锁店管理的要求.     

Do you get what you pay for with school-based health programs? Evidence from a child nutrition experiment in rural China

This study uses a randomized controlled trial of a school-based anemia reduction program in rural China to examine how increased school emphasis on health promotion affects academic performance. Although education and health promotion are complementary functions of schools, they do compete for finite school resources. We compare the effects of a traditional program that provided only information about anemia and subsidies to an otherwise identical program that included performance incentives for school principals based on school-level anemia prevalence. By the end of the trial, exam scores among students who were anemic at baseline improved under both versions of the program, but scores among students in the incentive group who were healthy at baseline fell relative to healthy students in the control group. Results suggest that performance incentives to improve student health increase the impact of school-based programs on student health outcomes, but may also lead to reallocation of school resources.     

基于片级支持库的DSP片上外设设计方法的分析

在DSP系统的设计开发中,片上外设的控制和应用是其中的一个重要方面。着重对两种设计方法之一的片级支持库方法进行了分析和研究,阐述了CSL链接库的设计原理和相关的结构特点,并通过实际例程的比较和分析,总结出该方法的特点和优势,为相关DSP系统的开发和研究提供了参考。     

关于高温UASB-常温三相好氧生物流化床处理偶氮染料废水的研究

研究了组合工艺(高温55℃UASB反应器一常温三相好氧生物流化床)对含盐偶氮染料活性嫩黄X-6G的去除能效。试验结果表明:在水温为55℃,运行周期120d,水力停留时间18h的条件下,此工艺对于CODCr为600～1 000mg/L,含盐量为25～35g/L,活性嫩黄X-6G的浓度为40～50mg/L的染料废水,染料及CODCr的去除率可达80%～90%。     

中国—东盟自由贸易区背景下广西茧丝绸业发展研究

中国—东盟自由贸易区(CAFTA)正式成立,贸易和投资成为了中国与东盟十国互利往来的重要领域,广西作为中国—东盟贸易区的桥头堡,将迎来历史性的发展机遇。在国家"东桑西移"工程推动下,广西蚕丝绸业的种桑、制种、养蚕、制茧等环节实现了跨越式发展,积蓄了一定的产业前端优势。为解决广西茧丝绸业存在的问题,提出了CAFTA背景下广西茧丝绸业发展策略:开放思想、突出重点、打造拳头产业;加快国内产业承接,深化加工,突围同质竞争;以人为本,实行品牌兴业,坚持两条腿走路。     

B2C网上支付教学演示系统的设计与实现

在Windows环境下,利用ASP.NET开发工具、SQLServer 2005数据库平台,开发了一套面向职业院校学生的网上支付模拟系统。该系统采用我国B2C模式网上支付系统普遍使用的SSL协议,通过数据流程图具体展示了从客户提交订单、商家生成订单到订单确认这一系列过程,实现了客户提交订单、商家生成订单、订单确认从而支付成功的功能。     

基于大学英语网络考试的师生困惑调查研究

大学英语四、六级网络考试目前正在全国试点并将全面推行,这种新的考试模式对于考试设计者、组织者以及大学英语教师和考生都带来了很大的挑战。本研究调查了大学英语教师和考生对于四、六级网络考试的具体方式与内容的困惑,指出其中存在的问题并为大学英语考试的后继改革提供借鉴,研究目的在于不断完善四、六级网络考试模式并促进其更好地服务于大学英语教学。     

Does parental employment affect children's educational attainment?

This paper analyzes whether there exists a causal relationship between parental employment and children's educational attainment. We address potential endogeneity problems due to (i) selection of parents in the labor market by estimating a model on sibling differences and (ii) reverse causality by focusing on parents’ employment when children are aged 0–3. We use data from the German Socioeconomic Panel that provide information on household income, parental employment, and time spent with child care. Our approach disentangles income and time effects of parental employment. Overall, we find little support that parental employment affects children's educational attainment. Controlling for household income, we can rule out that having a mother who works one hour more per week lowers the probability of high secondary track attendance by more than 0.1%.     

基于89C51的硬件汉字库的设计

该文论述了硬件汉字库的基本原理，以89C51单片机作为主控器构成硬件汉字库，经240＊128点阵的液晶模块将一篇小说显示出来，文中给出了具体的电路和相关的软件。