大学实验教学评价体系研究

科学的实验教学基本要求与合理的实验教师评价体系是提升实验教学水平的关键。文章针对原有实验教师评价体系存在的诸多问题,积极改革创新,依据"以人为本"的基本原则,借鉴教师全方位反馈评价法,将实验课教师评价标准从理论课教师评价标准中独立出来,完善实验教学管理规程,建立了符合安徽大学发展实际的多维度、多主体的科学实验教学评价体系,在充分实践的基础上,取得了一定的成效。     

RC桥式正弦波振荡电路中反馈深度研究

章通过对RC正弦波振荡器中反馈量与R、C参数关系的讨论，分析了R、C参数数值对反馈量的影响，以及对其放大器性能的影响。     

融合教育中的同伴作用策略

同伴作用是融合教育中需要予以特别重视的问题,其决定着融合教育的质量,它可以分担教师的工作压力和拓展融合教育的发展。常用的同伴作用策略有同伴指导、合作学习和反向融合。同伴作用策略的实施应着眼于满足残障儿童的特殊需要,形成系统的计划和关注全体学生的发展。     

Drawing near and pushing away: critical positioning in multimodal composition

As the tools and modes of literate practice continually emerge, so too must our critical approaches to understanding their expression. While media production has been praised for its potential to provide youth a voice to challenge dominant narratives, various questions remain as to what happens at the multimodal levels of composition in terms of critical engagement. This study uses mediated discourse analysis to examine adolescent students’ use of multimodal resources for purposes of critical positioning in ways unique to the multimodal dimensions of composing radio and video documentaries. Research findings reveal students’ active use of multimodal resources to both draw audiences near as well as push them away for purposes of pleasure, analysis, and critique. Implications for research and teaching include attention to the movement of shifting social positions as critical social practice.     

分析性外语课堂互动中口头纠正反馈作用的研究

纠正反馈的作用一直是外语课堂研究的一个热点,但大多局限在口语课上,而对分析性外语课堂的研究较少。采用实验方法,探究了不同的口头纠正性反馈方式在分析性外语课堂互动中的作用。讨论了几种不同的纠正性反馈方式以及由此产生的几种不同的学习者接纳的频率和分布情况,还探究了在不同的分析性外语课堂教学活动中,不同纠正性反馈方式的频率和分布情况。并引出下一个研究问题：究竟哪种策略更能引起学生注意反馈呢？     

采用同伴观摩的方法促进外语教师的专业发展

作为促进外语教师专业发展方法之一的同伴观摩在我国高校较少采用。因此,基于理论基础和实施方法上对同伴观摩方法做一介绍,并对学校在采用这一方法中可能出现的问题提出建议,同时揭示同伴观摩方法的特点和价值,希望高校采用这一手段促进外语教师的专业发展。     

Out of thousands and thousands of thoughts: Wandering the streets of the Hong Kong umbrella movement

Abstract

This essay discusses methods of pedagogy and educational philosophy stirred up by the Hong Kong Umbrella Movement/Occupy-Hong Kong Movement at the end of 2014. It situates these events as a way to envision a new type of public university. To this end, the essay proposes a model of ‘wandering scholarship,’ in which educators and activists walk through urban environments and use dialogic esthetics to reclaim them as ‘Commons.’ Wandering means a multisensory exploration and learning based on the historical concept of ‘psychogeography,’ a drifting through sites and interpellation of their embedded ideologies. As opposed to traditions of introspective wandering, this kind of ‘dialogic wandering’ is done within groups and encourages people to talk to fellow-walkers or random bystanders. As will be shown, these modes of wandering while addressing publics were pioneered in the 1960s student movements and also adopted in a unique manner by the young activists of the Umbrella Movement. Dialogic wandering leads to affective languages and embodied learning as opposed to modes of analytical reasoning and logic within higher education. To further study the impact of this aspect of social movements within a university curriculum, it will be shown by means of example how students can meaningfully adopt dialogic wandering to survey people’s affect and ideological positioning within environments.     

Exponential synchronization of general chaotic delayed neural networks via hybrid feedback

This paper investigates the exponential synchronization problem of some chaotic delayed neural networks based on the proposed general neural network model, which is the interconnection of a linear delayed dynamic system and a bounded static nonlinear operator, and covers several well-known neural networks, such as Hopfield neural networks, cellular neural networks （CNNs）, bidirectional associative memory （BAM） networks, recurrent multilayer perceptrons （RMLPs）. By virtue of Lyapunov- Krasovskii stability theory and linear matrix inequality （LMI） technique, some exponential synchronization criteria are derived. Using the drive-response concept, hybrid feedback controllers are designed to synchronize two identical chaotic neural networks based on those synchronization criteria. Finally, detailed comparisons with existing results are made and numerical simulations are carried out to demonstrate the effectiveness of the established synchronization laws.