互动探究教学模式的实践与思考——以高中《经济全球化》一课为例

互动探究教学模式是以学生为主体,以学会学习为目标,采用师生互动、生生互动、共同探究的课堂教学方式,达到活化政治课堂,提高教学效果的目的.本文试从教学实践时此进行初步的探索和思考.     

《外交部河南全球推介活动形象片》中的多模态隐喻及转喻分析

为加深对《外交部河南全球推介活动形象片》的理解,从认知语言学的角度解读了该片中出现的多模态隐喻现象,并对其中出现的多模态转喻类型进行了归纳梳理。研究发现,这部河南推介片以隐喻为认知框架,通过三个主要的多模态隐喻将全片串联起来,同时利用多模态转喻生动形象地展现了河南悠久的文化历史、特有的区位优势、蓬勃的发展态势等诸多方面。     

PLD技术在计算机数字视频信号处理系统中的应用

本文介绍了用PLD芯片作为主要控制逻辑来设计计算机数字视频系统 ,驱动控制逻辑PLD芯片为载体通过数字集成电路方式实现 ,控制逻辑的功能设计是用IEEE标准的集成电路设计语言VHDL作为行为描述语言。最后 ,用ACEXlK30芯片实现了该数字视频系统。     

电视娱乐节目结构的话语能力初探——兼论《非常6+1》的话语生成机制

将电视娱乐节目视为依照特定程序对语言符号进行编码的文本,依据语言学和结构主义方法,从娱乐节目的本体特征进行文本要素-结构性分析,以期清晰阐释潜隐在娱乐节目文本之中的形色话语的生产、运作机制和流通、控制过程。     

Developing an interactive augmented reality system as a complement to plant education and comparing its effectiveness with video learning

The learning of plants has garnered considerable attention in recent years, but students often lack the motivation to learn about the process of plant growth. Also, students are not able to apply what they have learned in class in the form of observation, since plant growth takes a long time. In this study, we use augmented reality (AR) technology to develop the ARFlora system, which can assist students in observing the changes in plant growth while in the classroom. More specifically, students are able to use AR markers to manipulate various virtual objects (e.g. sunlight) and observe the changes they have on plant growth. Meanwhile, a quasi-experimental evaluation is in place to substantiate the effectiveness of ARFlora in the learning of plants and to compare it with digital video learning. In the quasi-experimental design, 55 elementary-school students participated in the study. The participants are divided into two groups, an “experimental group” and a “control group.” The experimental group was taught using the ARFlora system, while the control group was taught by employing the digital video. Results show that (1) ARFlora and digital video have the same effectiveness on student's learning outcomes; (2) ARFlora is more effective in helping students retain learned knowledge; and (3) ARFlora is comparatively more useful in motivating students to learn about plants.     

A qualitative synthesis of video feedback in higher education

While written and audio feedback have been well-examined by researchers, video feedback has received less attention. This review establishes the current state of research into video feedback encompassing three formats: talking head, screencast and combination screencast. Existing research shows that video feedback has a high level of acceptability amongst both staff and students and may help strengthen student-marker relationships; however, the impact of video feedback on student learning outcomes is yet to be determined. In addition, current evidence is drawn largely from small-scale studies and self-reported data susceptible to the novelty effect. While video feedback appears to be a promising alternative to traditional written feedback for its relative relational richness, the medium continues to be primarily used for information transmission rather than dialogue. Further research is needed to establish how the medium of video influences the feedback process, its potential to facilitate dialogue and its effects on student learning.     

从信息论角度看视频图像压缩编码技术的发展

随着视频通信技术的发展,视频图像压缩编码也成为人们关注的热点问题。从信息论的角度分析视频图像压缩编码技术在发展过程中如何减少冗余度以及获得高质量的图像画面的问题,并详细介绍了MPEG-4的编码方法。     

英语听力课堂中的交互活动

从听力认知法和二语习得的角度探讨了在英语听力课堂中使用交互活动的双重意义,即策略的互动和课堂参与者之间的互动,并且从教学实践出发,介绍在英语听力课堂上如何以培养运用听力策略为目的,以讨论协商、交流互动为形式,开展多方位、多层次、多形式、动态的交互活动。     

Using Internet delivered video cases,to support pre-service teachers' understanding of effective early literacy instruction: An exploratory study

This preliminary study explores the effects ofusing CTELL (Case Technologies EnhancingLiteracy Learning) cases on preserviceteachers' learning. Students participated inone of three instructional treatments:traditional, traditional plus video, andtraditional plus CTELL cases. A pre-postconcept web, describing students' understandingof effective reading instruction, served as themajor outcome measure. This was supplementedwith a unidimensional confidence measure,journal entries, and student interviews. Nosignificant differences were found for any ofthe three treatment conditions on the conceptmapping task or the confidence measure.However, the journal entries and interview datahighlight important issues, challenges andbenefits, with respect to the use of multimediacases. Implications for teacher education areexplored.