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Applied research of e learning

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  • 1. The Applied Research of Cloud Computing Platform Architecture In the E-Learning Area Zhang Guoli Liu Wanjun School of Electronic Information Engineering School of Software Liaoning Technical University Liaoning Technical University Hu Ludao, Liaoning Hu Ludao, Liaoning e-mail: zgl_lesli@126.com e-mail: zgl_lesli@126.comAbstract—This paper firstly introduces the characteristics of cooperation, resource sharing and long learning services andthe current E-Learning, and then analyzes the concept and other functions.characteristics of cloud computing, and describes thearchitecture of cloud computing platform; by combining the II. CHARACTERISTICS OF E-LEARNINGcharacteristics of E-Learning and learning from current major E-Learning or Electronic Learning, is translated asinfrastructure approach of cloud computing platform, this "digital (based) Learning", "electronics (based) Learning",paper structures a relatively complete set of integration anduse in one of the E-Learning platform, puts the cloud "network (based) learning", etc. The variety of perspectivescomputing platform apply to the study of E-Learning, and of different translations: First, it emphasizes an Internet-focus on the application in order to improve the resources based learning; second, to emphasize electronic; third, tostability, balance and utilization; under the conditions, this emphasize on E-Learning in joining digital content andplatform will meet the demand for the current teaching and network resources together, emphasize using technology toresearch activities, improve the greatest value of the E- transform and guide the education. Some experts andLearning. scholars on the E-Learning gives a more comprehensive explanation: "E-Learning uses the Internet or other digital Keywords-E-Learning; Cloud computing; Architecture; content for learning and teaching activities, which takes fullTeaching Resources Integration advantage of modern educational technology provided with a new mechanism of communication and resource-rich I. INTRODUCTION learning environment to achieve a new way of learning "[2]. Among them, the key factors of E-Learning are reusing, E-Learning as an important mode of learning today, plays sharing resources and interoperability.an important role in creating a good learning environment of Compared with traditional teaching methods, E-learningpersonalization and being well adapted to the current is a good carrier of the content. Through a variety of teachingeducation model no matter when and where can, it also resources effectively organizing, sequencing, processing, itsupplies with a convenient communication environment and forms a web-based teaching and better than traditionalrich resources for learners. However, the current E-Learning teaching and learning environment, and is able to take fullinfrastructure is not yet complete[1], does not adequately advantage of a variety of teaching resources. At the sameprovide for the E-Learning system dynamic allocation of the time, E-learning for teachers and students, between studentsnecessary computing and storage capacity; and the majority and students provides an interactive learning environmentof E-Learning system being used was not well interacted, and it can effectively enhance students’ critical thinking andshared data with the others; and as knowledge has not been analytical skills, develop students self-learning ability. Fromprocessed by systematic arrangement ,digestion and the perspective of teaching resources, E-Learning is open.absorption, it leads to duplication of teaching resources, E-Learning for learners provides rich learning resources andconstruction and low utilization, so that the information selects learning materials and learning opportunities. Thisresources in distance education become isolated island on the feature makes online education has more options thannetwork. In this context, a new type of service computing traditional education [3].model----cloud computing platform for E-Learning providesthe required information technology, so good compatibility III. CLOUD COMPUTINGfor information technology; and the cloud computingplatform also provides the necessary foundation for A. The concept of cloud computingintegration of platform and technology environment for a In IBM’s technical white paper, “cloud computing” [4] isvariety of scattered of teaching resources, under the existing defined as: “Cloud computing term is used to describe both aconditions as much as possible to meet the demand of the system platform and a type of application. A cloudteaching, research activities for resources. Moreover, cloud computing platform is to be deployed dynamically on-computing for the E-Learning provides new ideas and demand, configuration, reconfigure and deprovision, and sosolutions to achieve interoperability between functional on. In the cloud computing platform, the server can bemodules of the resources and systems, highlighting physical servers or virtual servers. A high-level calculation978-1-4244-5586-7/10/$26.00 C 2010 IEEE 356 Volumn 3 Authorized licensed use limited to: Asha Das. Downloaded on August 04,2010 at 11:12:30 UTC from IEEE Xplore. Restrictions apply.
  • 2. cloud usually contains a number of other computingresources, such as storage area networks, network devices,firewalls and other security equipment. In describing theapplication of cloud computing, it describes a scalableapplication through the Internet. Any user can access a cloudcomputing application through appropriate equipment and astandard browser.” In cloud computing, the applications needed by users arenot run on users’ personal computers, mobile phones andother terminal equipment, but on a large-scale cluster ofservers running on the Internet. The user does not deal withthe data stored locally, but stored in the Internet data centerinside. The normal operation of management andmaintenance of these data center is taken charge ofenterprises which provide cloud computing services, andensure strong enough computing power and storage space forthe users. At any time and any place, any user can connect tothe Internet terminals. Therefore, whether businesses orindividuals, they can achieve on-demand in the clouds withthe use. Figure 1. System Architecture Model of Cloud Computing PlatformB. The characteristics of cloud computing There, the Based management system layer is mainly to The features and advantages of Cloud computing are: solve the sharing of computing resource, it can be used as the x Powerful computing and storage capacity. Cloud E-learning resource library. It includes hardware, storage, computing locates the computing and data in a large operating system and some other IT infrastructure and number of distributed computers, the sea of clouds in resource pool. It uses the hardware and software the tens of thousands of computers is to provide virtualization technology, coordinating action between the powerful computing power and huge data storage multi-level frameworks, to ensure stability and reliability of space, put the “cloud” as a service available to users infrastructure. At the same time it provides the basic network via the Internet. supported environment and provides the basic realization x High availability. Through the integration of mass environment of service-oriented architecture, but also storage and high-performance computing power, supplies the computing and storage capacity for the higher clouds can provide a higher quality of service. Cloud level. This layer ensures scalability and efficient use of computing system can automatically detect the node resources for the cloud computing platform, provides failure and exclude it, do not affect the normal computing resource, memory resource and data storage operation of the system. resource for the cloud computing application. x High security. In the cloud computing model, data is The Shared service interface layer is mainly to solve the storied intensively. Relying on one or more data manner in which the external provision of services, presents center, the managers manage the unified data, a powerful, high scalability, high availability of distributed allocate the resources, balance load, deploy the applications for the users. And it is the Based management software, control security, and do the reliable real- system layer’s network expansion, involving unified time monitoring, thus guarantee the users’ data management, distributed scheduling and security controls for security to the greatest possible degree. large amounts of data or computing resources. This layer is a x Virtualization. Virtualization is the most important software system of an actual run of storage, maintenance and characteristics of cloud computing. Each application provision of data, it is a collection of objects of storage deployment environment and physical platform is medium, processing and management system, and it is the E- not related. It is managed, expensed, migrated, and learning web development/resource integration platform. In backup through virtualization platform. It put the addition to the content network storage and maintenance, this underlying hardware, including servers, storage and layer also provides standard interfaces and content of the networking equipment, comprehensive virtualization, API for the higher layer. When resources in the library have in order to build a resources pool of shared, a rich accumulation and a certain amount of knowledge distributed on-demand. systems, there is a need for resources package to form an independent resource platform to the upper access.C. The system architecture of cloud computing platform Access layer is the use of cloud computing means to The architecture of Cloud computing platform can be achieve some specific applications; it is the last applicationdivided into three layers, from the bottom to top it is platform to supply service for customer. It can divide intofollowed by Based management system layer, Shared different application areas according to the specific needs ofService Interface Layer and Access Layer[5][6]. The customers, such as office software service, personal space-architecture model is shown in Figure 1. 357 Volumn 3 Authorized licensed use limited to: Asha Das. Downloaded on August 04,2010 at 11:12:30 UTC from IEEE Xplore. Restrictions apply.
  • 3. based service, and e-commerce and so on. At this level, Infrastructure layer is composed of informationcloud computing provides more convenient access to the infrastructure and teaching resources. InformationE-learning resources. infrastructure contains Internet/Intranet, system software, information management system and some common IV. APPLICATION OF ARCHITECTURE BASED ON CLOUD software and hardware; teaching resources is accumulated COMPUTING PLATFORM ON E-LEARNING mainly in traditional teaching model and distributed in E-Learning is not simply using the Internet to learn. It different departments and domain. Infrastructure layer is theprovides the solutions containing the technology of system place of management information pool that contains kinds ofstandardization and management means. On cloud electronic resource, digital library, courseware library andcomputing platform, network technology, modern equipment and facilities information database. Under cloudcommunication technology, information organization computing model, the layer provides managementtechnology and the technology of information management information for upper layer’s resource consolidation. Thesystems should be made full use of for the building of E- scheduling, combination and utilization of the teachingLearning. A teaching platform can be built by way of open resources are implemented according to the consolidationarchitecture and modular design in which teaching resources results of the management information.are shared in high degree, communication is extremely The function of the layer of platform integration is tosmooth, and cross-platform operations can be executed. a integrate varieties of resources belonged to differentcollection of a variety of media and new learning features, organizations and different platforms in infrastructure layer.teaching tools. According to the system architecture based on These integrated resources form the basis of teachingcloud computing platform and the feature of E-Learning, the activities. The dispersed, isolated and small-scale teachingapplication of the architecture on E-Learning is discussed resources are managed in different way using cloudfrom the perspective of hierarchy architecture. computing model in order to implement the share of teaching The application of the system architecture based on cloud resources. The integration of teaching resources is achievedcomputing platform on E-Learning is composed of three mainly by data warehouse, data mining and informationlayers [7] [8]: Infrastructure layer of E-Learning platform, organization technology and combined with scientificLayer of platform integration and Application layer. The management theory. The layer of platform integration alsoarchitecture is shown as figure 2. provides the interface of teaching resources managers, users and the Application layer. It is the displaying platform of resource consolidation results. Application layer is the specific applications of integration the teaching resources in the cloud computing model, including interactive courses and sharing the teaching resources. The interactive programs are mainly for the teachers, according to the learners and teaching needs, taken full advantage of the underlying information resources after finishing made, and the course content as well as the progress may at any time adjust according to the feedback, and can be more effectiveness than traditional teaching. Sharing of teaching resources include teaching material resources (such as equipment facilities), teaching information resources (such as digital libraries, information centers), as well as the full sharing of human resources. It can achieve overall scheduling, allocating and utilization of the most teaching resources; improve the teaching efficient use of resources. By then, users only need an Internet web browser or mobile phone and other mobile devices to get the interactive experience, mobility and storage services. In the cloud computing model, E-learning service and data can be shared within the framework to the maximum to avoid the duplication of educational information system’s development. V. CONCLUSIONS The E-Learning platform in the cloud computing model is based on the web, integrating text, graphics, video andFigure 2. Cloud computing platform system architecture for E-Learning other multi-media resources, so it can create a good learning Structural model environment for learners. At the same time, it uses a large number of the current-date information technology to manage the traditional teaching resources integrate in order 358 Volumn 3 Authorized licensed use limited to: Asha Das. Downloaded on August 04,2010 at 11:12:30 UTC from IEEE Xplore. Restrictions apply.
  • 4. to improve the utilization rate of resource. The advantage of improvement of the quality of teaching and learningcloud computing platform architecture applied to E-Learning activities for changing the pattern of teaching.is mainly reflected in: (1) the cost of education informationsystem construction can be reduced. The tasks of the web- REFERENCESrelated and the data center in educational institutions will be [1] LORNA UDEN, ERNESTO DAMIANI. The future of E-learning: E-able to complete in the case of using the cloud computing learning ecosystem. Proceedings of the first IEEE Internationalservices, and you can save costs that will be spent on the Conference on Digital Ecosystems and Technologies, Cairns, Australia, 2007[C]:113-117.expensive hardware devices, frequent maintenance and [2] China Education and Research Network. What the school nationalupgrades. (2) The "island" phenomenon can be effectively recognition of modern distance educationeliminated in the education information system. Cloud diploma.[OL].http://www.eunet.eom.en/daxue/HTML/13627.html,20computing architecture provides enhanced management 08-5-5.mechanism, automated deployment and high-level [3] Xu Huaxiang. The influence of Cloud computing on education. [J]virtualization, so the learning process and learning resources Computer knowledge and technology, 2009,5(4):2690-2692.can be reused in the case of integrating the teaching [4] Boss G, Malladi P, Quan D, Legregni L, Hall H. Cloudresources. (3) The teaching methods are convenient and computing[OL]. IBM White Paper, 2007. http://download.boulder.ibm.com/ibmdl/pub/software/dw/wes/hipods/flexible. According to their actual conditions, the two sides Cloud_computing_wp_final_8Oct.pdf.can choose different times and different locations to [5] Guo Leshen, Zhang Naijing, Shang Jingang. Cloud computingcomplete the curriculum design and self-study by using a environment security framework.[J] Network Information Security,variety of teaching resources and the editing tools on the 2009,10(7):62-64.platform of cloud computing model, so many knowledge can [6] Xie Sijiang, Fen Yang. Analysis of cloud computing and informationbe acquired. (4) Most computing tasks to be accomplished in security. [J] Beijing Electronic Science and Technologythe clouds by using the cloud computing services, so that the Institute,2008,16(12):1-3.computer can be accessed to the Internet in the school, [7] Fei Kuiming. E-LEARNING-based platform for integration ofteachers and students can access the resources at any time. teaching resources.[D] Wu Han, Central China Normal University,2008(6). Based on the above study, cloud computing platform can [8] BO DONG, QINGHUA ZHENG, JIE YANG, HAIFEI LI, MUbe widely used in distance education and the online training QIAO. An E-Learning Ecosystem Based on Cloud Computingof business professionals. A lifelong learning environment Infrastructure. Proceedings of Ninth IEEE International Conferenceshould be built possibly to facilitate the development of on Advanced Learning Technologies,2009[C]:125-127information technology in education and ensure the further 359 Volumn 3 Authorized licensed use limited to: Asha Das. Downloaded on August 04,2010 at 11:12:30 UTC from IEEE Xplore. Restrictions apply.