摘 要:目前遠程教育資源建設還處在初步階段,各教育機構存在教育資源重復建設,質量參差不齊的現象,造成了財力、人力的重復投入。隨著網格技術的廣泛應用,在此依靠網格對分布的數據資源進行統一共享和管理。現以廣播電視大學遠程教育資源建設為原型,構建了廣播電視大學遠程教育資源網格,從而達到了共享各種教學資源,整合各種教學服務的目的。關鍵詞:遠程教育資源; 網格; WSRF; Globus; GridFTP
中圖分類號:TN915-34文獻標識碼:A
文章編號:1004-373X(2010)18-0094-03
Grid-based Resource-sharing Mechanism for Distance Education
GUI Da-wei
(Resource Development and Modern Education Technology Center, Shaanxi Radio and TV University,Xi’an 710068,China)
Abstract: As the rapidly growing popularity of distance education in China, the distance education network resources become the teaching basis of educational institutions, educational resources and quality of the scale reflect the level of distance education institutions. At present, the construction of distance education resources are still at the initial stage, various educational institutions exist repeated construction of educational resources, the uneven quality causes financial and human resources of the duplication. With the widespread application of grid technology, relying on the sharing and unified management of grid on the distributed data resources, the long-distance education resources grid of RTVU is built by considering its construction as the prototype, so as to achieve sharing of a variety of teaching resources, integration of a variety of teaching service. Keywords: distance education resources; grid; WSRF; Globus; GridFTP
0 引 言
隨著我國遠程教育的迅速普及,遠程教育資源已成為各網絡教育機構的教學基礎,教育資源的規模和質量也體現了遠程教育機構的水平。目前遠程教育資源建設還處在初步階段,各教育機構存在教育資源重復建設,質量參差不齊的現象,造成了財力、人力的重復投入。隨著網格技術的廣泛應用,在此依靠網格對分布的數據資源進行統一共享和管理。在此以廣播電視大學遠程教育資源建設為原型,構建了廣播電視大學遠程教育資源網格,從而達到了共享各種教學資源,整合各種教學服務的目的。
1 全國廣播電視大學遠程教育資源的分布情況
目前,全國廣播電視大學(以下簡稱電大)的遠程教育資源為四級垂直分布結構,分別由中央電大的一級資源、省級分校的二級資源、地市級分校的三級資源和各縣級工作站的四級教育資源為平臺構成,其結構圖如圖1所示。這個結構覆蓋了全國44家省級電大,形成了一個覆蓋面非常廣的遠程教學環境。……