不要为了“操作”而操作

课堂上组织学生进行动手操作活动，促使学生手、眼、脑、口多种感官参与，相互配合，提高感知效果，可以为学生从感性认识上升到理性认识打下坚实的基础。但不难发现，轰轰烈烈地开展动手操作，有的收获的却是零零碎碎的边边角角。笔者现就动手操作常见的问题与大家探讨。     

Pattern formation for a model of plankton allelopathy with cross-diffusion

In this paper, we develop a theoretical framework for investigating spatial patterns on plankton allelopathy with cross-diffusion. We show that under some conditions the cross-diffusion is able to induce the Turing instability, which is further confirmed by the numerical simulations. Moreover, applying the Leray–Schauder degree theory, we demonstrate that the cross-diffusion leads to an inhomogeneous stationary pattern provided with even stronger conditions. Finally, the wavenumber and the type of pattern selection are computed numerically. Our theoretical results of the spatial pattern are coincident with the experimental observations.     

Being and becoming: a student trajectory

This article analyses the intellectual discourses of adult development and adult learning. It argues that through a process of transformative adult learning individuals can experience the disintegration and reintegration of past and present human growth. The development of adults is considered not in terms of discrete theories but as a collage of theories. The writers analyse and interpret the literature that attempts to study the interaction of individuals in the total context of the inner and outer forces that impinge on their life.

We conclude from a study of the literature that adult development, from a transformative perspective, is more than adjustment to a particular society; it is a qualitative change in how one views the world; it involves tension and struggle that are productive of a new consciousness. This change occurs through a dialectical process that calls for movement through the old style of meaning‐making to a reconstruction of meaning that is a synthesis of the old and the new. It is also concluded that adult learning can foster critical awareness and critical consciousness that can effect a transformation in the way adults see themselves and others. The route to transformative adult development and transformative learning lies in acknowledging contradictions and differences and working through them, as opposed to ignoring or circumventing them.     

美国NTIS的发展、转型和运营模式研究

本文以美国联邦政府著名的信息服务机构NTIS为例,介绍了其发展现状,分析了其使命、任务、资源、服务、运营模式以及近些年来遇到的困难和挑战,展示了目前采取的应对策略和措施,评述了此案例对我国科技信息服务机构的参考价值.     

加强沟通协调 扎实我国图书馆联盟建设基础

比较分析历史和现状，指出我国图书馆联盟发展水平较低主要在于联盟内部沟通协调这个环节有问题，导致联盟基础不实。针对问题提出扎实基础的对策和方法。     

The role of reduced frequency of knowledge of results during constant practice

Two experiments were conducted to further examine the effects of reduced knowledge of results (KR) frequency on the learning of motor skills during constant practice. In Experiment 1, participants in five KR conditions (100% KR, 50% KR-fade, 50% KR-reverse fade, 50% KR-alternative, and 50% KR-random) practiced a movement timing task. In Experiment 2, participants in two KR conditions (100% KR and 50% KR-fade) practiced a waveform reproduction task. The results of both experiments failed to indicate that reduced KR frequency was more effective in promoting learning than the 100% KR conditions. The present study adds to the increasing number of experiments that do not find a benefit of reduced KR frequency on learning in constant practice.     

跨世纪我国学校体育发展战略与对策研究

在全国范围对我国中小学体育工作现状作大样本调查,基本上摸清有关体育教学、课余体育训练、体育师资队伍和体育经费、场馆建设的状况,并进行因素分析。在现状分析基础上,确定５类１２项具体目标,经科学预测,提出在本世纪末学校体育发展战略目标以及实施目标的基本对策。     

对高校体育与健康课的思考

从提高当前高校体育教育和健康教育的教学效果出发 ,探讨它们的存在问题 ,讨论了高校体育与健康课的内容设置。     

Adjunct question effects with review

The effects on retention of adjunct questions either placed at the end of a passage or inserted after their respective paragraphs within the passage were examined. The high school subjects were encouraged to review the materials after encountering the questions, a departure from traditional procedures in the field. Both treatments led to superior retention of the previously questioned facts when compared to a passage-only control group, but did not increase retention of previously unquestioned facts. The position of the adjunct questions did not differentially affect performance. The discrepancy of the results from those traditionally reported are interpreted in terms of the procedures employed.