青少年网瘾的预防和戒除

“网瘾”已成为一大社会公害，学生分心，家长痛心，教师忧心，社会担心，预防和戒除网瘾刻不容缓。通过对网瘾的界定、网瘾的实质与导致网瘾的“罪魁祸首”的分析可以看出，要预防和戒除青少年网瘾，就要教会青少年正确使用网络，加强理想教育和意志力培养，加强网络的开发和监管。通过厌恶疗法、系统脱敏法、替代与转移法来戒除网瘾。     

硼对金属间化合物Ni3Fe氢气诱发环境氢脆的影响

In this paper the tensile properties of both ordered and disordered Ni-24Fe and Ni-24Fe-0.03%B （wt%） alloys in gaseous hydrogen was investigated. The result shows that the ductility of the disordered Ni3Fe is significantly larger than that of ordered material in gaseous hydrogen. However, the ductility of ordered Ni3Fe doped with 0.03%B is nearly the same as that of disordered one indicating the obvious suppressing effect of boron on the H2-induced embrittlement. Based on the segregation behavior of boron in Ni3A1, it is proposed that the suppressing effect of boron in Ni3Fe on the H2-induced embrittlement is attributed to the segregation of boron on grain boundaries, thereby reducing the hydrogen diffusivity along the grain boundaries.     

论间接语境同一替换失效疑难的解答——兼评弗雷格方案与罗素方案

弗雷格借助间接意谓试图说明间接语境同一替换失效问题。但罗素并不赞同弗雷格的处理方法,而是提出摹状词理论,以解答这个长期困扰人们的难题。研究表明,无论是弗雷格抑或罗素的方案都没有抓住问题的关键,最终皆失败了。实际上,问题的关键在于命题态度词,出路是区分认知程度。     

Une introduction non classique aux algorithmes d'addition et de soustraction

The aim of our study was to analyze a didactical sequence for the teaching of addition and subtraction procedures and algorithms. In the conception of that sequence, we have taken into account diagnostic and repair models for procedural bugs in addition and subtraction algorithms, as well as learning and teaching methods for multi digit additions and subtractions. The didactical sequence included situations involving many of the characteristics associated with procedural bugs; however, when the children encountered those situations they had many conceptual tools to detect their mistakes and correct them, giving that way a meaning to the actions made in addition and subtraction procedures and algorithms. Our teaching activities were submitted to second grade school children (7–8 years old). The didactical interactions and the procedures used by children in problem solving activities were analyzed in order to get a better understanding of the interaction between numbers, numeration and operations knowledge which are involved in the construction of addition and subtraction procedures and algorithms and to relate children's knowledge acquisition to the didactical situations. This revised version was published online in July 2006 with corrections to the Cover Date.     

硅氢加成反应与研究

本文指出硅氢反应加成的反应机理,加成方式及产物的重要用途。     

影响不对称烯烃加成反应的因素

影响不对称烯烃加成反应方向有三个因素：①取代基;②亲电试剂;③其它试剂（如引发剂）．     

数学学习困难儿童解决简单加减法的认知特点的实验研究

本研究比较了数学学习困难儿童和正常儿童在解决简单加减法运算中的差异发现,学习困难儿童解题策略发展水平较低,且在解题中有独特的“癖好算法”。他们与正常儿童的差别还表现在一般智力和数学能力较低     

Contact with a multicultural past: A prejudice-reducing intervention

This paper introduces the notion of contact with a multicultural past as a new type of indirect intergroup contact. It presents results of a study which evaluated the effects of an educational program utilizing the proposed framework. The program aimed to facilitate the engagement of Polish students (N = 427) with historical Jewish heritage in their places of residence. The intervention proved highly successful at increasing students' knowledge of and interest in local history which both contributed independently to an increased inclusion of the outgroup (Jews) in the self and in turn to more positive attitudes towards them. The implications of using contact with a multicultural past in societies with low levels of direct intergroup contact are discussed.     

一种未来的计算机--三值光计算机

三值光计算机研究是众多新型计算机研究中的一种,其研究目的是尽快构造出充分发挥光的优点、实际可行、通用性强的光计算机。理论和实验成果都表明：它将有数万位的数据宽度。适合于处理具有高度并行性的问题。在它的结构中充分发挥了光和电子计算机的优点。相辅相成。由于使用的主要基础器件是已经商品化的二维液晶器件,所以是一个比较容易实现的未来计算机系统。     

烯烃与溴化氢进行自由基加成反应的立体化学

从立体化学角度阐明烯烃与溴化氢进行的自由基加成反应