基于web的信息检索虚拟课堂设计

基于web的信息检索 ,虚拟课堂就是利用Internetwww服务具有的各种功能 ,以浏览主页的形式提供远程教学服务。信息检索虚拟课堂的开发应注意其特点、构成虚拟课堂的要素 ,注意开发步骤。参考文献 5     

普通话学习中动力定型的转换

固有的方言语音系统的影响是方言区的人学习普通话的障碍，这里概括并阐释了教师应如何科学地设计教学内容，帮助学生尽快完成由方言到普通话动力定型的转换，从而学生在短时间内学好普通话。     

英语头韵的修辞特色及其翻译

头韵是英语中最常用的修辞手法之一，具有节奏美和音韵美，能增强语言表现力。由于汉语中不存在头韵修辞格，因此头韵的翻译成了英汉翻译中的一个难点。实践充分利用汉语的多种语音修辞手法，可以再现英语头韵的艺术魅力。     

域名服务安全及解决策略

域名服务是internet最重要和最基本的服务,DNS的稳定和安全直接关系到internet的正常与否。本文分析DNS服务及应用所面临的安全问题,重点探讨了DNS体系结构的弱点。并提出相关建议和解决方案。     

浅析尾韵、头韵、谐音在英汉语音修辞方面的作用

通过英汉两种语言语音修辞的异同,从尾韵、头韵、谐音在语音修辞方面所起的作用进行对比研究,引导读者从语音修辞的角度了解语言的声音美,语言的传神,从而更好地理解语言,更好地发挥语言在交流中所起的桥梁作用。     

Selection and evaluation of Internet information by adults with intellectual disabilities

Internet offers people with intellectual disabilities (ID) unique opportunities to access information and to participate in society. But concerns have been raised about the potential risks they face when accessing the Internet (e.g. giving credit to false information, being exposed to manipulative content). As part of the current debate between positive risk-taking and overprotection, our study empirically tested the extent to which 43 adults with ID identified and selected topically relevant as well as trustworthy web pages while searching the Internet for several topics (e.g. Can social networks use your pictures for advertisement?). Participants also justified their search decisions. Results revealed that while searching familiar topics (i.e. social networks), participants selected more relevant and trustworthy pages than irrelevant and less trustworthy ones. Searches of less familiar topics (i.e. daily health), were carried out randomly, that is, without applying a specific criterion. Results point to the importance of topic familiarity on people’s with ID performance on Internet searching tasks. This pattern of results suggests that, first, we should avoid overprotection when people with ID search for familiar topics and, second, they need more support when searching for information about less familiar topics.     

论当代小说语言的新动态

随着当代小说创作的不断发展,小说的语言也需要有所创新。小说家们以创作实践进行了一系列的探索,主要表现为:努力构筑一种新的符号化的意象,使当代小说语言的表现性功能加强;运用一定的写作技巧,使语言的内容及形式更适合多方位、立体化地描绘生活;将传统小说语言进行翻新,剔除已经老化或过分“磨损”的词语,使其更具活力;构筑现代小说语言整体新风格,使读者耳目一新等几个方面。本文试图对具体的作家、作品进行分析,一一阐述、论证这一问题。     

互联网信息搜索技术

信息搜索是主要的互联网应用技术之一．本阐述了信息搜索的概念、方法、高级技巧、需要注意的问题等，以提高获取信息的能力，培养信息素质。     

启发式搜索算法研究

介绍了两种启发式搜索算法:禁忌搜索(Tabo search)和分散搜索(Scatter search),主要说明两个算法的基本要素、算法流程和目前的研究情况。     

Design of Maximally Flat FIR Filters Based on Explicit Formulas Combined with Optimization

A maximally flat FIR filter design method based on explicit formulas combined with simulated annealing and random search was presented. Utilizing the explicit formulas to calculate the ini- tial values, the firate-word-length FIR filter design problem was converted into optimization of the filter coefficients, An optimization method combined with local discrete random search and simulated annealing was proposed, with the result of optimum solution in the sense of Chebyshev approximation. The proposed method can simplify the design process of FIR filter and reduce the calculation burden. The simulation result indicates that the proposed method is superior to the traditional round off method and can reduce the value of the objective function to 41%～74%.