一种面向Chrome浏览器的视频云笔记插件

随着互联网的发展以及edx,Coursea和Udacity等开放式网络教学平台的推广,互联网教学逐渐兴起并广泛普及。互联网教学中学生获取知识的一个主要媒介是互联网课程中的教学视频资源。然而,当前的互联网教学辅助平台中存在一个明显的不足:学生无法及时针对教学视频细节在云端记录并分享笔记或寻求帮助。这将会影响学生对视频形式的教学内容的理解,也不利于形成优质的学习生态系统。由此,设计了一种面向Chrome浏览器的视频云笔记工具,并采用了HTML5,Node.js,MongoDB等关键技术对其进行了实现。该工具能够针对互联网教学视频资源的细节内容记录、发布笔记并在云端共享,有利于学生对视频教学资源中细节的整理、理解、讨论和最终掌握;同时该工具可以根据学生人群在使用工具的过程中产生的数据对视频内容进行一定程度的解析,挖掘视频教学资源中的关键点,从而降低学生获取关键知识的难度,辅助学生的学习过程。最后,进行了相关的实例研究,结果证明了所提出的分析设计方案的可行性和有效性。     

云端教学的课前准备

云端教学就是基于云技术的学科教学,是依托云端教学平台而开展的课堂教学形式。云端教学的初衷是应用云技术解决传统课堂中面临的技术瓶颈,助力课堂教学改革。笔者的研究课题是"如何应用云端教学平台开展学科教学"。云端教学开展需要充足的信息资源作为支撑,所以做好课前准备很重要。笔者认为课前准备可大概分为教学设计和资源整合两个方面。●课堂活动的设计和学案电子化     

基于云服务课堂教学的观察与思考

随着"云服务"在互联网的广泛应用,我校于2012年5月与专业公司合作,开始了基于云服务的课堂教学研究。初期,公司技术人员多次与我校一线教师深入探讨课堂教学在云服务中的各种实际需求,并进行了云端教学平台的搭建。今年2月份我校购入了70台平板电脑,组建了无线网络覆盖的云教学实验室,之后经过我们课题组几位教师和技术人员的反复测试和改进,云端教学平台基本成型。下面就三节"云端教学研讨课"从课堂观察者的角度来谈一谈基于云服务课堂教学的观察与思考。第一次使用平板电脑上课,学生都无比激动。在技术人     

浅谈云端教学平台下微课程的制作与应用

经过近一年的时间,由我校和专业公司合作开发的河北云端教学综合平台——"优教云"终于投入使用了。通过"优教云"平台的"电子备课"项目,教师可以将自己搜集准备的各类教学资源存储在"云端资源"中;通过"我的课程"和"十分钟课堂"项目向学生发布课程或学习资料;通过"互动学习"项目可以发布课题组织学生讨论;通过"知识评测"项目可以给学生发布作业或考试,及时获取反馈信息,并根据反馈信息安排上课内容。同样,学生的个性化学习信息也可以保存在"云端"服务器,学生只要使用终端接入互联网,就可以随时从"云     

IT技术与产品

诺亚舟首发"云学习"技术平台及其应用终端优学派 6月中旬,中国教育电子企业诺亚舟在京正式推出了"云学习"技术平台及其首个应用终端:优学派."云学习是云计算在学习领域里的具体应用,云学习系统包括云学习平台和云终端学习机.云学习平台作为'云端'资源网络,全球开放、社会共建、协作共享,并将一个个知识宝库以超维度组合知识节点方...     

基于“互联网+”的大学数学线上学习平台设计

针对现有大学数学线上学习平台在实际应用中存在响应速度慢的问题,本文提出基于“互联网+”的大学数学线上学习平台设计。首先,在平台网络上部署多台虚拟机,利用串行通信接口获取大学数学网站的学习资源;其次,基于云计算技术设计存储云端,用HIG网络协议将虚拟机、云端和校园网络连接,实现对海量学习数据的存储;最后,调配云端中的学习资源,以此完成基于“互联网+”的大学数学线上学习平台设计。经实验证明,此次设计平台在响应速度方面优于传统平台。     

智能云教学资源共享平台架构研究

针对现有基于云计算的教学资源共建共享存在学习门坎偏高、交互方式不足、难以实现物理设备的共享等问题,分析学生和教师、理论课与实验课的实际需求,引入物联网技术,对教学资源进行必要的规范和智能处理,提出一种智能云教学资源共享平台架构。     

微课分层教学在高中信息技术课堂的应用价值研究

借助时代给予的先进技术和便利的平台、资源,可构建新型微课教学模式。采取因材施教的分层教学原则,有利于解决以往课堂教学活动过程中存在的一系列问题和不足,有助于实现学生个性化的培养和发展,完成教学目标。通过建立学生学习资源库,满足不同层次学生的学习需求,丰富学生的学习资源。笔者主要针对微课分层教学在高中信息技术课堂的价值进行分析,进而针对其应用展开研究,以供参考。     

“数字”助力课堂新场景 “趣味”玩转音符大世界——《我们大家跳起来》教学设计

<正>创新整合点(1)数字资源,满足学生个性化学习。本课采用的教学模式是翻转课堂教学模式。学生依据课前导学单,借助武汉教育云平台完成云端自学。通过自学,学生在课前就能基本掌握本课音乐知识点——四二拍和四三拍,以及音乐软件——JPW6简谱编辑软件的操作方法。观看七步洗手歌,学生感受到艺术来源于生活。学生在观看微课后,     

基于混合云终端中间件平台的云书包设计研究

随着云计算、物联网、移动互联网等新技术的发展和信息化背景下教育云的推动,云书包的应用应运而生。但是传统的云书包的建设通常都是指针对单一平台进行开发和建设,不能满足当前跨平台云资源共享的时代要求。针对该问题提出了基于混合云终端中间件平台的云书包设计,旨在解决教育云资源一次性开发、跨平台共享的难题。详细介绍了混合云端中间件平台的关键技术,并在此基础上介绍了云书包架构和应用模式,同时分析了云书包的特点和发展前景。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。