学习资源服务生态环境构建的研究

发布时间：2018-02-27 04:27

本文关键词： 学习资源生态系统生态服务学习系统架构 e-Learning标准网格技术学习资源本体社会计算开源系统　出处：《华东师范大学》2009年博士论文　论文类型：学位论文

【摘要】： 随着知识经济的发展与技术创新的驱动,特别是互联网经济的迅速发展和社会(计算)网络的迅猛形成,e-Learning出现了多方位变化,现代服务业中的教育第三方服务也逐渐凸显。同时,随着我国教育信息化的深入发展和终身化教育的逐步推进,政府、企业、教育单位和个人开发了大量教育资源,在社会计算环境下也产生了大量生成性资源,特别是越来越多的朝微型化方向发展的微型学习资源。资源的多样性产生了资源自身的异构、再生、无序等问题,资源服务平台的多样化也引发了系统异构和服务质量等问题,这些问题对资源共享都构成较大的影响。如何解决上述问题,实现学习资源的有效共享,将是本篇论文研究的核心问题。本论文首先界定了学习资源相关概念,学习资源发展演化趋向,接着论述所存在的问题以及问题解决的思路,随后从理论基础、技术架构和技术实现等方面考虑构建学习资源服务生态环境,以解决学习资源的有效共享问题。从理论层面分析了构建学习资源服务生态系统(LRSES)的理论基础,阐述了生态系统、开放系统、网络教学传通系统、协同学习等相关理论,界定了学习资源服务生态系统LRSES的范畴并且给出了理论模型,构建了学习资源服务生态系统论域(LRSEUoD),对LRSEUoD的角色空间∑_R、内容资源空间∑_(CR)、媒体工具空间∑_(MT)、协调空间∑_C、工作信息空间∑_W等5个子空间进行建模和形式化描述,并分析了学习资源在时空中的交互演化过程,最后定义了学习资源生态服务质量参数。从技术架构层面上研究了LRSES的技术框架,分别从系统架构、标准规范、语义本体等三个方面,研究解决学习资源及其服务系统的异构问题,以实现学习资源及其服务系统的互操作。在系统架构方面,分析了技术系统架构发展演化和学习服务系统架构的情况,建立了学习资源服务的系统架构;在标准规范方面,研究了学习资源相关标准及互操作,拓展了数字化学习资源(内容)标准规范,以解决社会计算环境下学习资源标准化问题;在语义本体方面,分析了教育资源领域语义本体,并基于e-Learning相关标准规范,定义了学习资源生态环境轻量级本体LREO(Learning Resource Ecosystem Ontology),包括学习资源本体LRO(LearningResources Ontology)、学习者本体LNO(Learner Ontology)和普适设备本体PDO(FIPA Device Ontology)。从技术实现层面上分析了学习资源的自治分布和共享服务中存在的多样性学习资源的共生与再生、学习资源的分布无序和共享服务等问题,提出了学习资源的生命周期管理方法;给出了学习资源生态演化、分布及其相关算法,并利用网格技术设计学习资源自治分布子系统(LRSDG);最后分析了学习资源共享服务的角色权限分配,给出了学习资源共享服务的4个步骤,阐述了学习资源共享中的协作交互与协同演化。最后给出了LRSES的系统实现方法,包括体系结构与访问接口、学习资源生态本体(LREO)、自治管理(LRSDG)和服务共享(LRSS)等层面,阐述了学习资源服务生态系统开发的技术生态环境,给出了验证和测试学习资源服务生态系统的体系结构方法,并给出访问教育资源库和社会软件中的资源访问接口方法;利用Prot(?)g(?)开源本体工具建构了学习资源生态本体(LREO),包括建立元数据命名空间,定义LREO元素和元素间关系,呈现LREO本体视图,并给出了本体语义访问方法等;利用网格平台GT4实现学习资源自治管理环境LRSDG,包括LRSDG的系统监控管理、同步数据性能测试和用户访问情况数据分析;用开源Sakai系统建立了学习资源的服务共享环境(LRSS),实现了学习资源服务共享环境中的用户认证、权限分配以及协作交互与协同演化等功能。本文得到了全国教育科学“十五”规划教育部重点课题“网络教育资源整合的研究”(课题编号:DCB030252)、863子项目“基于数据网格的教育资源服务系统ERSDG实现”(863项目编号:2004AA1Z2330)、上海市教育科学规划重点课题“多视角下的上海教育资源网格的构建研究”(课题编号:A0505)、全国教育科学“十一五”规划教育部重点课题“国家基础教育信息资源服务体系架构与共享机制研究”(课题编号:DCA060101)、863子课题“Linux多媒体网络教学资源环境下的协同学习工具开发”(项目编号:2005AA1Z2100)、国家科技支撑计划课题“现代服务业共性技术支撑体系与应用示范工程”“学习平台体系结构与接口测试与应用示范”子任务(子任务编号:2006BAH02A36-004-1)等国家科研项目的资助。
[Abstract]:With the development of knowledge economy and technological innovation, especially the rapid development of Internet economy and Society (Computing) rapid forming network, e-Learning multi dimensional change, education of third party service in the modern service industry gradually. At the same time, with the further development of China's information technology education and lifelong education gradually forward, government, enterprises, educational institutions and individuals in the development of a large number of educational resources, social computing environment also produced a large number of production resources, especially micro science more and more towards the direction of the development of micro learning resources. The resource diversity has its own resource heterogeneity, regeneration, disorder and other issues, the diversification of resources the service platform also led to the heterogeneous system and service quality problems, these problems have a greater impact on shared resources. How to solve the above problems, the implementation of learning resources Effective sharing will be the core issue of this paper.
This paper first defines the related concepts of learning resources, learning resources development and evolution trend, and then discusses the solving problems and ideas, then from the theoretical basis, technical architecture and technical implementation in terms of constructing learning resources service environment, to effectively solve the problem of learning resources sharing.
From the theoretical analysis of the construction of learning resources ecosystem services (LRSES) theory, this paper expounds the ecological system, open system, network teaching communication system, collaborative learning theory, defines the learning resource service ecosystem LRSES category and gives the theoretical model, to construct the learning resource service domain (ecological system theory LRSEUoD), on the role of LRSEUoD space _R, the content of the resource space _ sigma (CR), media space _ (MT), sigma sigma coordinate space _C, modeling and formalization of information space Sigma _W 5 sub space, and analyzes the interactive learning resources in time and space in the evolution process, finally the learning resources ecological service quality parameters are defined.
From the technical architecture based on LRSES technology framework, respectively from the system architecture, standard specification, the three aspects of ontology research, solve the problem of heterogeneous learning resources and service system, to achieve interoperability of learning resources and service system. In the aspect of system architecture, analyzes the development and evolution of technology system architecture learning service system architecture, a system architecture of learning resource service; in the standard specification, study the learning resources standards and interoperability, expand the digital learning resources (content) standard specification, in order to solve the problem of social computing resources standard learning environment; in semantic ontology, the semantic field analysis of educational resources ontology, which is based on the e-Learning standard, the definition of learning resources and ecological environment LREO (Learning Resource Ecosystem lightweight body Ontology), including learning The resource ontology LRO (LearningResources Ontology), the learner ontology LNO (Learner Ontology) and the ubiquitous device ontology PDO (FIPA Device Ontology).
From the aspects of the symbiosis and regeneration of autonomous distribution and sharing of learning resources in the diversity of learning resources technology, learning resource sharing and disorderly distribution services and other issues, put forward the method of life cycle management of learning resources; learning resources are ecological evolution and distribution algorithm, and the use of the design grid learning autonomy of resources distribution subsystem (LRSDG); the final analysis of the role distribution service learning resource sharing, 4 steps of service learning resource sharing is given, expounds the cooperative learning resources sharing and co evolution.
Finally, the realization method of LRSES system, including system structure and access interface, learning resources ecological Ontology (LREO), autonomous management (LRSDG) and shared services (LRSS) and other aspects, discusses ecological environment development learning resource service ecological system, gives the verification and testing service of learning resources ecological system structure the method, and gives access to educational resources and social resources in the software interface method; using Prot (?) g (?) open-source ontology tool construction learning resources ecological Ontology (LREO), including Jian Liyuan data namespace, the LREO element is defined and the relationship between elements, presents the LREO ontology view, and gives the ontology semantic access methods; implementation of autonomous learning resource management environment using LRSDG GT4 grid platform, including system monitoring and management of LRSDG, analysis of synchronous performance test data and user access data; the use of open source Sak AI system establishes a learning resource service sharing environment (LRSS), which implements user authentication, permission allocation, collaborative interaction and collaborative evolution in learning resource service sharing environment.
The research of network education resources integration of national science education "fifteen plan" important project of Ministry of education "(project number: DCB030252), the 863 sub project" ERSDG education resource service system based on data grid "(project number: 2004AA1Z2330 863), the study of the construction of Shanghai education resource grid under multi perspective of Shanghai City Education Science Planning Project" (project number: A0505), National Science Education "in 11th Five-Year the Ministry of education" planning "as the important project of national basic education information resources service system architecture and sharing mechanism research" (project number: DCA060101), the 863 sub project "teaching environment of Linux multimedia network collaborative learning tool development" (project number: 2005AA1Z2100), National Science and technology support program "modern service industry common technical support system and application demonstration project" and "learning platform Support of national scientific research projects such as system structure and interface test and application demonstration, sub task number: 2006BAH02A36-004-1.

【学位授予单位】：华东师范大学
【学位级别】：博士
【学位授予年份】：2009
【分类号】：G434

【引证文献】