大数据视域下的虚拟学习社区安全研究——基于门限代理签名的协同学习系统探讨

在＂大数据＂时代,数据管理成为虚拟学习社区面临的重要挑战,而学习资源的数据安全是数据管理的核心。通过文献研究,得出目前大数据的规模和来源;从学习资源共享和保护两方面,分析了大数据对虚拟学习社区产生的新影响和大数据下虚拟学习社区呈现的新特点以及虚拟学习社区面临的安全威胁和挑战。随着大数据海量信息的爆炸式增长,传统的虚拟学习社区资源保护技术和方法力不从心,结合虚拟学习社区的特点和功能,提出了门限代理签名在虚拟学习社区的应用。协同学习作为虚拟学习社区的一种重要形式,成为人们学习、探索知识的有效方式之一;通过分析大数据时代虚拟社区协同学习的分布式特点、新的演变和组成要素,厘清了虚拟学习社区中协同学习的安全需求,提出了基于门限代理签名的协同学习安全保护方案,以期为大数据时代虚拟学习社区提供安全的网络学习环境做出理论的新探索。     

Easy,collaborative and engaging – the use of cloud computing in the design of management classrooms

Background:?Cloud computing has recently received interest in information systems research and practice as a new way to organise information with the help of an increasingly ubiquitous computer infrastructure. However, the use of cloud computing in higher education institutions and business schools, as well as its potential to create novel learning environments remains an underresearched topic.

Purpose:?To address the research gap, this paper investigates how the capabilities of cloud computing have fostered collaborative learning processes of students in the design of management classrooms. The research project has taken place in a three-year period and has covered five post-graduate knowledge management classes, which have been situated in the context of business education.

Research design and sources of evidence:?I have used an illustrative case study of five knowledge management classes as research design to explore and describe interconnections between methods of social constructionism and cloud computing properties which enhance collaborative learning experiences of students in the classroom. To develop a theoretical background for the case study, I first review literature on constructivist and experiential learning, new management profiles, and information systems. In the empirical part of the case study, I have observed the experimental blending of constructivist learning methods and the cloud computing platform Google Apps for Education in three post-graduate classes and two Executive Master of Business Administration classes on the topic of knowledge management. For the data collection, I have focused on collaboration processes to understand how students have used various cloud computing tools to work together, and how their usage has affected interaction and reflection in the observed courses.

Results:?Findings show that collaborative properties of cloud computing, when they are undergirded by methods of social constructionism, influence learning factors on cognitive, emotional, spatial and group levels and lead to substantial changes in teacher/student roles and behaviours. The ease-of-use, playfulness and immediacy of cloud platforms creates collaborative learning spaces and has the potential to foster lateral thinking and problem solving of students in the classroom.

Conclusions and contribution:?By illuminating mutual interrelations between learning factors, constructivist principles and cloud computing properties, the paper enriches the literature on the innovative use of information system technologies in universities and business schools. The paper provides, in addition, practice-oriented insights for pedagogical and methodological choices that undergird the capabilities of cloud platforms to foster collaborative learning processes of students in higher education institutions.     

新工科背景下应用型大数据人才培养课程群研究与建设

建立大数据专业课程群,循序渐进地引导学生从基础到综合、从理论到实践,从专业基础课进入到大数据专业核心课程的学习,逐步开设分布式系统、云计算、数据获取、数据处理、大数据挖掘与分析、大数据预测与人工智能、数据可视化等课程,将大数据技能学习路线清晰化、科学化;精心设计课程理论与实践环节,理论教学将案例贯穿到教学内容之中,让学生能够更加直观地理解知识,实践环节采用模块式实验设计,让教师能够根据课程内容对实验内容进行组合,能够有针对性地让学生掌握相关技术。经过实践,大数据课程群建设对学生竞赛、就业及深造起到了较好的支撑作用。     

云计算辅助教学CCAI支撑的协作学习设计

基于教育技术视角,简述了“云计算辅助教学”CCAI的相关概念,分析了云计算及典型云平台的基本现状,并结合Google App Engine和Windows Live典型云平台,讨论了CCAI协作学习的设计过程．包括功能模块与组件选取、组织教学资源、设计协作学习活动、组件的个性化自主扩充等。     

云计算环境下教学资源的知识管理协作应用

文章分析了高校教学资源管理应用中存在的问题和云计算技术对教学资源管理的影响,探讨建立云计算环境,将知识管理的服务模式应用到高校教学资源的共享应用中,并且提出基于协作的资源共享和知识管理应用流程,提高现有资源的利用率,为高校教学资源协作管理应用提供借鉴。     

基于云计算探析云学习

云计算的诞生带来了新一代互联网计算模式。云计算带来了一种新的工作和学习方式,基于云计算服务构建新的学习平台、创建新的学习环境、开展的协作式学习,这种学习方式可以概括为云学习。云学习具有云计算的天然优势,但需要成熟的云计算平台支撑。     

电子书包中基于教育大数据的个性化学习评价模型与系统设计

根据大数据技术的模块构成和电子书包所包含的系统和功能,对电子书包中教育大数据的模块内容进行分析。之后,在评价内容上从课程内容学习、参与互动交流、考试与作品和课外资源学习四个方面进行了细分和聚类．构建了基于电子书包的个性化学习评价模型。在评价结果上,依据柯氏四级评估模式和布鲁姆教学目标分类理论设计了基于教育大数据的个性化评价层次塔,该层次塔包括学习成效、概念转变、学习迁移和学习力四个层级。最后,结合教育大数据、教育云服务、个性化评价模型和评价层次塔,设计了个性化学习评价系统模型,包括信息采集模块、数据分析与处理模块、个性化评价模块和可视化反馈模块,并通过云管理层实现对教育云服务平台、云存储池和云集群计算平台的调控和管理,以期为后面开展个性化评价系统的设计与开发提供有益的指导。     

Collaborative mentor support in a learning context using a ubiquitous discussion forum to facilitate knowledge sharing for lifelong learning

The Internet has recently been identified as a potential enabler of lifelong learning. Web‐based learning systems enable learners easily to access rich resources and actively participate in learning activities without time and distance limits. The main challenge in lifelong learning is providing the opportunity for discussion and collaborative knowledge construction to engage learners in acquiring and applying knowledge in the context of learning, working and collaboration. Moreover, knowledge sharing is a key component in the formation of communities of lifelong learners. Most online collaborative learning communities use Web text‐based discussion forums for knowledge sharing. However, such discussion forums are separated from the context of learning activities. Furthermore, the facilitation of beneficial dialogue through discussion forums, requires the involvement of mentors as facilitators. This study proposes an e‐book interface that enables learners easily to annotate or enter queries in a text in which questions arise, where a query context is transferred to a discussion forum. The subsequent anchors of questions are linked to a discussion forum for actuating sustained participation. A mentor finder recommends a collaborative peer based on learner knowledge level to answer the questions. Learners can also use mobile phones to access this ubiquitous discussion forum using voice/text anytime and anywhere. The experimental results showed a clear increase in the level of discussions, and most learners indicated that they benefited considerably from collaborative mentor support in an e‐book learning context through the provision of a ubiquitous discussion forum.     

Fostering collaborative teacher learning: A typology of school leadership

Previous research indicates that supportive school leadership is a key condition of collaborative teacher learning. The purpose of this study was to develop a typology of how school leaders foster collaborative teacher learning. We adopted an integrative perspective on leadership by examining both learning-centred leadership and distributed leadership practices that are supportive of collaborative teacher learning. Data were gathered by means of interviews with ten school leaders and a questionnaire that was completed by 39 teachers from six secondary schools in the Netherlands. The aim of the interviews was to identify to what extent school leaders applied learning-centred leadership and distributed leadership practices. The questionnaire measured teachers' perceptions of the role of school leaders in teacher learning. As an outcome of this study, we constructed a typology that provides insights into how school leaders foster collaborative teacher learning. Four types of school leaders were distinguished: (a) integrators of teacher learning, (b) facilitators of teacher learning, (c) managers of teacher learning, and (d) managers of daily school practice. Our findings suggest that integration of learning-centred leadership and distributed leadership practices can help school leaders to support collaborative teacher learning.     

基于云计算的大学英语教学课程设计

介绍云计算为教育发展提供了优质、便捷的服务平台,以建构理论、协作学习、学习社区等为基础,探讨大学英语教学课程的设计与构建方法,以期为教师建立"基于云计算的大学英语课程设计模式"提供一个总体设计的依据和原则。     

云计算支持下的计算机协作学习研究

随着云计算技术的不断发展和教育教学的联系越发密切。在计算机支持的协作学习基础上,加入云计算辅助教学元素,通过对班级学生进行试验尝试,对结果进行分析研究,总结出云计算支持的协作学习的规律和特点,肯定了学习效果,同时对未来进行展望。     

基于云学习平台的高职网络设备管理课程个性化教学改革与实践

云计算、大数据、人工智能等新信息技术的飞速发展,让新信息时代下的个性化学习成为当代教育变革发展的新范式。为推进新信息技术与高职教育深度融合创新,破解人才培养难题,以高职计算机网络技术专业网络设备管理课程为例,进行课程现状和学情分析,构建大数据视野下基于云学习平台的个性化学习模型,进行课程个性化教学改革与实践,通过学习满意度调查和学习成绩分析,个性化教学改革取得良好教学效果。     

基于云计算的数字化教学资源库的构建研究——以高职人力资源管理专业为例

随着云计算技术的日臻成熟,应用各类云服务将成为互联网未来发展的趋势。云计算具有全新的计算服务模式,计算能力超强,数据存储易扩展,安全性高。针对高职院校数字化教学资源库存在访问速度慢、共享性差、存储容量小等问题,以云计算技术为技术支持,从专业标准库、课程资源库、培训资源库、素材资源库等方面着手,构建一种基于云计算的人力资源管理专业数字化教学资源库,以实现高职人力资源管理专业教学资源共享,为学生自主学习提供平台,促进教学质量提高。     

成人在线学习的研究现状与发展趋势

随着全民学习和终身学习理念的深入人心,基于大数据、云计算和虚拟现实等新技术的在线学习越来越能满足人们多元化、多层次和多样化的学习需求。以中国知识网络中的成人在线学习文献为样本,对出版文献的总体趋势、来源、类型、关键词及作者做了定量分析,以学习者为中心将研究主题归纳为成人学习者特征分析、学习行为分析、学习资源分析、学习支持系统分析和学习评价分析五个方面,深入地分析了成人在线学习研究的现状,探索了成人在线学习的发展趋势。     

大数据时代下个人云资源柜的构建研究

针对当前学习模式下海量数字教育资源的流转过程中存在的不足,结合云存储的特性提出了基于云存储的个人云资源柜的构建,以期为教育大数据时代下的学生提供泛在的学习支持,提高学生的学习效率.文章重点阐述了由应用访问层、管理层、存储层等构成的个人云资源柜的系统体系结构、分层功能及实现过程.同时通过实验模拟,对传统模式和个人云资源柜支持下的两种学习模式的效果进行了比较分析及性能测试.     

泛在网络环境下面向企业教育模式的思考

美国国家基金会的数字学习与劳动力发展（DLWD）研究小组提出了教育的新一代基础泛在网络环境——持续协同计算云环境（C4）,为企业教育新的模式发展提供了可能.随着技术环境的进一步发展和实现,孕育了一种新型的泛在学习方式,企业教育的新模式也成为教育研究者关注的热点.文章首先介绍C4（连续协同计算云环境）以及现有企业教育存在的问题,并分析泛在学习的理论基础、环境支持及实现形成,在此基础上,构建了一个基于企业教育的新的泛在学习模式.     

云计算与网络学习

云计算是在网格计算基础上提出的一种新型计算模型,是下一代网络计算平台的核心技术,它提供了可靠安全的数据存储、方便快捷的互联网服务和强大的计算能力。在教育领域,云计算是未来网络学习的基本环境与平台,将对学习者个人学习环境构建、学校资源建设和教育信息系统开发等带来积极影响。     

基于大数据云平台的深度学习预测模型研究

近年来,随着云计算、大数据等技术的迅猛发展,如何快速、有效地从纷繁复杂的数据中获取有价值的信息成为当前大数据应用的关键问题。为此,对基于大数据云平台的深度学习预测模型进行研究,以对未来序列数据走势进行有效预测。首先对几种基于深度学习的长短序列预测模型进行对比分析,分析其与传统预测模型的区别及优势,提出一种加入 dropout 的轻量级 GRU 预测模型。采用代表性天气数据作为实验对象,实验结果表明,该方法的实验预测指标 MAE（平均绝对误差）的平均值相比传统预测方法有所提高,从而有效验证了轻量级 GRU 预测方法的正确性与有效性。     

基于云计算的远程开放教育资源建设研究

通过分析远程开放教育网络和资源现状及其存在的不足,进而探讨云计算技术及其应用于远程教育的可行性.然后研究云计算给远程开放教育资源建设带来的变革,并给出基于云计算的远程教育资源架构的设计,以期促进电大网络教育资源建设,提高开放大学办学水平.     

多空间融合视域下学习环境及学习情境探究

互联网、人工智能、大数据、云计算、物联网等技术的教育应用逐渐走向纵深,使得学习环境发生了深刻的变革,亟需探究符合时代背景、面向新型学习环境的教与学交互理论,探究如何设计学习环境来应对新兴技术支持的学习情境。通过分析学习情境的基本特征,探究多空间融合后学习情境革新带来的学习环境设计原则的变化。基于新技术、新理念、新方法等对教与学影响的思考,最终提出学习情境的描述框架。学习情境是一种复杂的网络现象,基于互联网技术、人工智能、大数据分析储存技术等的应用,学习情境客观存在于虚拟环境中,成为一种具有目标性的长期存在的学习活动,借助互联网实现教学知识传播与知识共享,并可以实时进行学习分析、导航、评估、反馈、调节等,学习情境成为学习的连接器和促进有效学习的助推器。