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題 名 | 管理元件化資源應用系統--以遠距教學系統為實例=Managing Object-oriented Resources Application System - an Instance of Distance Education |
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作 者 | 林敏慧; 黃正魁; 汪柏; 陳慶帆; | 書刊名 | 遠距教育 |
卷 期 | 12 1999.06[民88.06] |
頁 次 | 頁53-61 |
分類號 | 521.58 |
關鍵詞 | 遠距教學; 物件導向; 模糊理論; 灰關聯分析; Distance education; Object oriented; Fuzzy theory; Grey relational analysis; CORBA; UML; |
語 文 | 中文(Chinese) |
中文摘要 | 由於近年來網路科技的快速發展,對於在資訊化組織的工作流程影響更深,就以 傳統的教學系統資源來說,往往許多的資源教材都因為收集的困難而做罷,因此對於網路上 多樣化教學資源做一套有規劃的收集和管理,是本研究的主要架構,尤其以遠距教學 (Distance Education)環境下的教材資源而言,可以讓主播教室的授課老師將多樣且新穎的 教材呈現於遠端教室的學生,如此提供許多較新的網路教材一起共享。 對於遠距教學的系統而言,其所需要的基礎架構必須建構在物件導向的環境中,藉由元 件的功能分割方式,尋找許多網路上不同的分散式元件,藉此增加本身本系統的功能廣度。 而在網路上開發元件時,有可能會建構在不同的硬體和軟體環境下,所以首先就必須處 理異質性(Heterogeneous)的存在問題,因此在網路上的元件就必須遵循一套相同的機制去 解決環境不同的狀況。由美國一非營利組織OMG(Object Management Group)所制訂的 CORBA(Common Object Request Broker Architecture)機制,即可容易地讓分散式元件共用 在不同的異質環境下,而在系統了解元件需求下本論文採用UML(Unified Modeling Language) 的表示法,可以清楚地呈現出元件的所屬特性。最後,對於在遠距教學系統元件開發下,使 用模糊理論去推估開發成本,並且對於在符合開發成本環境下的多個元件,進行灰關聯預測 分析而產生較佳的開發元件。 |
英文摘要 | Recently, the fast advance in network technology has great influence on the work flow of information organization. As for the resources of traditional instructive systems, it's too hard to collect many instructive resources. So, how to organize and manage the various instructive resources on the network is main goal of our research. Especially in the environment of distance education resource, the teacher in local-room can show many new instructive materials to the students in remote-rooms, such that much more instructive materials can be provided and shared on networks broadly. As for the distance education, it's necessary to build the infrastructure in object-oriented environment, so that the whole function of systems can be partitioned into objects. And then we can find and use many distributed components through networks to enhance and extend the functions of our own system. On Internet, users may develop components under different platforms of hardware and software. So they need a standard scheme to design components and solve the heterogeneous problem. The CORBA (Common Object Request Broker Architecture) scheme designed by OMG (Object Management Group) can let the distributed components be shared in heterogeneous environment easily. In the thesis, we use the UML (Unified Modeling Language) to describe the Distance Education systems and the properties of components can be expressed clearly. Finally, we use the fuzzy theory to estimate the cost of developing components and use the grey relational analysis to choose the appropriate components from those components that match the demanded cost. |
本系統中英文摘要資訊取自各篇刊載內容。