Mathematica软件在高等数学教学中的运用

Mathematica软件具有强大的数值计算、符号计算、绘图、程序设计等功能，高等数学教学中引入Mathematica软件作为教学的辅助工具，可解决学生数学运算问题，函数的图形绘制问题等，提高学生的数学分析能力和解决综合应用问题的能力．     

极限、定积分、二重积分概念教法之探讨

在极限、定积分、二重积分的概念教学过程中,运用哲学思想、引用历史典故和逻辑思维及直观图像等方式方法,变抽象数学概念为学生易于接受的信息,使学生更容易掌握新概念、新理论。     

转化思想在复变函数解题中的应用

从复变函数中的复函数的极限、复函数的积分两个方面入手,阐述了转化思想在复变函数解题中的重要应用.     

变上限定积分的一种应用

阐述了变上限定积分的概念和求导法则,讨论了与变上限定积分有关的求导、求极限、求最值及变上 限定积分在微分方程中的应用.     

To tag or not to tag? How to support organizing and classifying bookmarks from the Web (¿Con etiquetas o sin etiquetas? Cómo asistir en la organización y clasificación de los marcadores de páginas Web) (¿Con etiquetas o sin etiquetas? Cómo asistir en la organización y clasificación de los marcadores de páginas Web)

ABSTRACT

When searching for information on the Internet, it can be stored in a bookmarking system. The ability to organize this information in such a system depends on one’s own prior knowledge to create an appropriate classification scheme. Providing a classification system for bookmarks might support people with low prior knowledge. Even though different bookmarking systems exist, hierarchical menus and tagging are being most widely used. In the current exploratory study with 95 ninth-grade students, a 2 × 2 between-subjects design was used to investigate the influence of providing classification support (or not) for either a tagging or a hierarchical system. Results showed that despite the low familiarity with tagging systems, using a hierarchical system is not necessarily a better approach than using a tagging system to organize previously found information. Rather, a tagging system seems to yield storage of fewer but higher-quality information sources. The most important conclusion is that, despite the low familiarity with tagging systems, using a hierarchical system was not beneficial over using a tagging system to organize previously found information.     

对“意义”的多维透视

“意义”是人文社会科学中的基本范畴之一。从语言学、哲学、逻辑学等多个角度对其进行研究,可以全方位地挖掘“意义”的内涵。同时,从“意义”的分类及特征着眼,也有助于对“意义”内涵的把握和理解。     

二重极限与一致收敛的等价性

通过研究二重极限与累次极限、一致收敛与累次极限的关系，证明了二重极限存在与一致收敛在一定条件下的等价性，利用等价性。得到了一个与《高等几何》类似的对偶原理，并且利用对偶原理采用两种不同的方法讨论了极限函数的一些分析性质。     

Between urgent and lifelong matters: overweight children’s voices on health promotion pedagogies

ABSTRACT

This article addresses the learner perspective on being overweight by listening to 39 Danish overweight children aged 8–13 years. In accordance with the existing critique of the ‘obesity epidemic’ and medico-scientific discourses around food and exercise, this article explores how new health imperatives shape overweight children’s self-narratives. Health pedagogical activities in Denmark are between urgent and lifelong approaches to achieving health, and the article presents overweight children’s voices on having to learn new health behaviour in between these two schisms. From a social constructionist and post-structuralist perspective, the analysis demonstrates how the children both subscribe to discourses of discipline and control over health actions, as well as legitimate narratives of having to adjust, accommodate and negotiate health challenges to everyday life practices. The article addresses what can be learnt from listening to overweight children’s voices in the context of performing meaningful health pedagogies.     

关于Sikkema—Bernstein多项式导数的迭代极限

本首先给出了Sikkema-Bernstein多项式的迭代极限及误差估计；然后构造一个整系数Sikkema-Bernstein型多项式，并给出了该多项式的导数逼近导函数是有界变差时的收敛阶估计式。