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排序方式: 共有197条查询结果,搜索用时 140 毫秒
91.
This paper analyzes the socioeconomic stratification of achievement in the Chilean voucher system using a census of 4th and 8th graders, a multilevel methodology, and accounting for unobserved selectivity into school sector. Findings indicate that the association between the school's aggregate family socioeconomic status (SES) and test scores is much greater in the private-voucher sector than in the public one, resulting in marked socioeconomic stratification of test scores in the Chilean voucher system. We also find that the amount of tuition fees paid by parents in private-voucher schools has no bearing on test scores, after controlling for the socioeconomic makeup of the school. Implications of these findings for educational inequality in the context of a universal voucher system are discussed.  相似文献   
92.
As one of the nation's informatization strategies, the Chinese government has set up an ambitious goal to connect all the villages via broadband by the end of 2020. Lacking an explicit and systematic universal service policy, the Chinese government initially designated the major telecommunications carriers to carry out the task, which is commonly referred as “telephone service in every village project”. So far, the project is going well and all the planned deadlines are met. In addition to connections, government and business entities are developing various information services to bring timely and useful economic, educational and agricultural information to those rural residents.The primary research question of this paper is to look at whether this government-led model is sustainable in the future. The study is conducted in Sichuan, a typical western province where the divide between the urban and rural area is very prominent while, surprisingly, the agricultural informatization service in that region has gained national attention. The study shows that the lack of vision, coherent strategy and a sustainable model are the issues that need to be addressed.  相似文献   
93.
阐述了数字版权管理(DRM)的系统体系架构和安全管理机制,主要围绕三种主流的电子书DRM系统,探讨权利描述语言、通用技术标准、使用控制、移动阅读、权利转移等关键问题的进展和应用,并指出DRM现存不足及未来发展方向。  相似文献   
94.
儒家仁爱思想可分成仁爱之心、自爱、爱亲人、泛爱众、仁者与天地万物一体五个层次,以爱有差等原则由内向外、由近及远层层扩展。仁爱是一种人道思想,仁是人之为人的本质特征。比较儒家仁爱与道家的慈爱、墨家的兼爱、佛教的慈悲、基督教的博爱、伊斯兰教的行善惩恶,可以看出世界不同文化都强调“爱”,但对“爱”却有不同的阐释,形成了各自的特色。儒家仁爱思想可以成为普世价值观,在当今世界越来越显现出它的独特智慧。  相似文献   
95.
"己欲立而立人,己欲达而达人","己所不欲,勿施于人"是最普遍最基本的道德原则,也是普世伦理原则。本文主要以全球化为背景,论述普世伦理原则永恒的道德价值性,人类社会依然需要普世伦理原则引导。  相似文献   
96.
一种语法理论的提出必须回答它对于“普遍语法”的观点。在三层语法的框架下,“普遍语法”是一个有层级性差异的对象:在语用层,差异最大化,普遍性最小;而在句法层和语篇层,差异性逐渐收敛而普遍性逐渐放大。这种观点对指导语法研究有积极意义。  相似文献   
97.
"世界图书馆"理念及其实践述评   总被引:2,自引:0,他引:2  
"世界图书馆"是指具有广泛收藏的图书馆。文章主要以时间为线索,考查了近代图书馆员、现代作家和当代信息技术条件下人们对世界图书馆的种种设想及其实践,从而彰显作为一种图书馆现象的世界图书馆对图书馆学、图书馆事业发展和人类社会全面进步的意义。  相似文献   
98.
Abstract

In this interview, conducted by email, Dr. Mirna Wiler discusses her career as cataloger, systems librarian and UNIMARC and metadata expert, as well as her position as Professor of library science. She also describes her participation in international organizations' working groups, such as IFLA and UNESCO.  相似文献   
99.
This paper examines the impact of the implementation of a universal free school breakfast policy on meals program participation, attendance, and academic achievement. In 2003, New York City made school breakfast free for all students regardless of income, while increasing the price of lunch for those ineligible for meal subsidies. Using a difference-in-difference estimation strategy, we derive plausibly causal estimates of the policy's impact by exploiting within and between group variation in school meal pricing before and after the policy change. Our estimates suggest that the policy resulted in small increases in breakfast participation both for students who experienced a decrease in the price of breakfast and for free-lunch eligible students who experienced no price change. The latter suggests that universal provision may alter behavior through mechanisms other than price, highlighting the potential merits of universal provision over targeted services. We find limited evidence of policy impacts on academic outcomes.  相似文献   
100.
本文介绍了家庭数字媒体中心概况及其工作原理,简要介绍了UPNP即通用即插即用架构,讨论了家庭数字媒体中心与UPNP架构的关系,并对UPNP架构的发展前景作了进一步的分析和探讨。  相似文献   
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