Opportunities to Learn in the Budapest Mathematics Classroom

This paper examines the nature of the problems posed, the processes by which their solutions were made public, their structural contribution to a lesson and the opportunities they offered for the learning of mathematics in Budapest, Hungary. The problems were derived from observations, the processes of which were informed by various comparative studies, of 94 mathematics lessons in the 10–14 age range. Problems, the analysis and categorisation of which were informed by the literature, tended to fall into two categories – single response with high levels of cognitive demand and multiple response with high levels of cognitive demand. Structurally lessons fell into a well practised pattern of classroom behaviour. They began with a public review of homework, comprising two or three multiple response problems which were solved collaboratively. This was followed by a warm-up period involving the oral setting and mental solving of a few single response problems. Lastly, the main body of the lesson involved several cycles in which a multiple response problem was posed, attempted individually before solutions were shared publicly. Lessons ended with homework being set. The discussion of the findings is framed by Hungary's variable performance on recent international tests of mathematical attainment.     

异化与归化之解构

拒斥二元对立、否认意义的确定性是解构主义思想的核心。通过解构,对翻译中的异化与归化进行了考查和分析,可以看出两者不是那种传统概念中的二元对立、一元中心的关系,而是互为补充、互为条件的共生关系,即-它们都是翻译的本质属性,并非谁更优于谁。在解除该二元对立的同时,也应建构二者在翻译实践和理论研究中的平等地位。     

关于我国研究生教育层次结构优化的若干思考

文章以阐述研究生教育层次结构优化的标准为基础,对我国研究生教育层次结构的发展现状与问题进行了定量分析,并指出了优化我国研究生教育层次结构全过程中必须注意的问题,提出从总体上控制一个合理的比例关系、实行研究生培养单位的任务分工、实施研究生教育形式的多样化、分别不同科类不同专业调整研究生教育层次等是优化我国研究生教育层次结构的基本对策。     

Large eddy simulation of the gas-particle turbulent wake flow

To find out the detailed characteristics of the coherent structures and associated particle dispersion in free shear flow, large eddy simulation method was adopted to investigate a two-dimensional particle-laden wake flow. The well-known Sub-grid Scale mode introduced by Smagorinsky was employed to simulate the gas flow field and Lagrangian approach was used to trace the particles. The results showed that the typical large-scale vortex structures exhibit a stable counter rotating arrangement of opposite sign, and alternately form from the near wall region, shed and move towards the downstream positions of the wake with the development of the flow. For particle dispersion, the Stokes number of particles is a key parameter. At the Stokes numbers of 1.4 and 3.8 the particles concentrate highly in the outer boundary regions. While the particles congregate densely in the vortex core regions at the Stokes number of 0.15, and the particles at Stokes number of 15 assemble in the vortex braid regions and the rib regions between the adjoining vortex structures.     

系统功能语言学在新闻语篇分析和阅读中的应用

以韩礼德的功能语言学理论为指导,从三大纯理功能中的语篇功能角度出发,对一篇有关“SARS”的报导进行主位结构的分析和讨论。通过分析揭示出:用功能语言学的分析框架来描述新闻体裁,可以帮助我们从新的角度进行阅读和理解,从而加深对语篇的认识;功能语言学在新闻语篇分析中的实用性和可操作性。     

未来课堂的教学结构探究

随着应用于课堂教学的技术环境不断变化,传统课堂以"教"为主的教学结构逐渐被以"学"为主的结构所取代。以"学"为核心的未来课堂教学结构的构成要素及相互关系发生了改变,本文研究了未来课堂教学结构中教学媒介、教师与学生、认知三层构成要素,讨论了它们之间相互耦合、相互作用的关系;并以课堂教学的两个主体——教师和学生为教学活动的核心要素,分别对未来课堂教学结构的多维、层级、互动三个特征进行了探讨。     

计算机数据结构在车站班计划中的设计与实现

现代化信息技术的发展与进步,带动了各行各业的信息化建设。本文以实现车站班计划编制自动化和智能化为目的,通过对铁路车站班计划编制内容和数据实体的研究,建立了一个适用于计算机调用的班计划数据结构模型。文中将对计算机数据结构模型在车站班计划中的设计与实现做进一步论述,为实现铁路班计划的自动化编制提供借鉴性意见。     

城乡一体化进程下的土地制度探究

在认识城乡二元化的土地制度的基础上,结合城乡一体化实践过程中的土地问题,探究新型化的一元化的土地制度走向：构建城乡一体化的土地制度的相关法律,建立农村土地交易平台,推动农村土地建设用地的市场化发展;减少城市工业化建设用地和农村宅基地使用的面积;加强对土地的监管力度。     

句首“N_时的NP”结构的形成和语用功能

句首"N时的NP"结构是由于时间状语和受事宾语话题化后和主语NP或受事NP发生句法重组而形成定中关系。非典型的"N时的NP"定中结构增强了NP的话题功能并蕴含对比功能。     

当代网络文化中流行的表人新名词及其理据

当代网络文化之繁荣,孕育出形形色色的网络新名词。作为对日趋细化和多元人群的客观称谓和个性描述,表人的流行新名词在音形义等方面独具特色,或直接借用外来词,或灵活创造新词语,或赋予旧词以新义。表人的流行新名词既根植于社会生活,又深深地烙上了时代的印记,更忠实地映射出当今社会人们多姿多彩的生活方式和多元化的价值取向,有着深刻的言内外因素和文化心理理据。表人的新名词在生成和传播过程中也必须经受“汰弱留强”和“适者生存”等自然生态法则的检验,除了遵循语言发展规律和满足交际的现实之需,还有待大众传媒等方方面面予以包容和理性引导。