A framework for activity supervision in virtual university

淡江大學機構典藏 > 工學院 > 資訊工程學系暨研究所 > 學位論文 > Item 987654321/34999

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题名:	A framework for activity supervision in virtual university
其它题名:	虛擬大學之活動監督架構
作者:	陳永輝;Chen, Yung-hui
贡献者:	淡江大學資訊工程學系博士班顏淑惠;Yen, Shew-huey
日期:	2005
上传时间:	2010-01-11 05:52:54 (UTC+8)
摘要:	遠距教育一直是一個重要而熱門的研究議題，尤其是應用在多媒體電腦和其通訊方面。自從教育教學的活動實現於電腦網際網路的空間之後，大家已深深地體認出，如何在網路中控制學生的行為和增大網路通訊的頻寬，則是一個極富挑戰而前瞻性的問題。我們呈現出一個先進的Petri Net模型，分析多個參加者在網路虛擬環境中的工作流程，提出之方法不僅能顯著的幫助開發者了解客戶機伺服器在虛擬環境之間的互動關係，而且容易建構一個共享的虛擬世界。我們提出一種基於鷹架理論的系統和發展出一種敘述性的規範語言，由教師使用來設計出一種基於Petri Net理論的規則狀態機器，讓學生在網路中的行為，被一個為教師而量身定做的智慧型之控制系統所監督，而這一般化工具界面的智慧型的控制系統，則是架構在虛擬實境和即時通訊技術之下。在虛擬網路世界中，學生和教師有其個別的化身，而此化身在網路世界中的行為是由像電動遊戲般模式的瀏覽器所控制。當學生有不當的行為而觸犯了虛擬校園規則時，其行為馬上會被發現、糾正，甚至於馬上限制其在虛擬校園中的行動。因多位用戶在網絡中互動所產生的問題和利用Petri Net模型解決問題，在這裡會詳細說明。這篇論文能夠當作一個基本的研究架構和學習及理解遠距學習的特性，並且作為探索它最佳的教育應用工具。 Distance education has been an important research issue of multimedia computing and communication. Since the instructional activities are implemented on cyberspace, how to control behaviors of students and to increase the degree of communication awareness has been a challenging issue. We present an advanced Petri Net model to analyze the workflow of a web-based multiple participants virtual environment. The presented approach not only can conspicuously help the developer to comprehend the interaction relationship between the client-server virtual environments but also to easily construct a shared virtual world. We proposed a system based on the scaffolding theory, and developed a declarative specification language for instructors to use in designing a rule-based state machine, based on Petri Net theory. Behaviors of students are supervised by an intelligent control system, which is programmed by the instructor under our generic interface. The interface is built based on virtual reality and real-time communication technologies. Students and instructors have their individual avatars that are controlled by a video game like navigation. Those behaviors that violate virtual campus regulations are detected and interceptive actions are performed. Problems of providing the multi-user interaction on the Web and the solutions proposed by the Petri Net model are fully elaborated here. This paper can be used as a basic/fundamental research framework and tools to study and understand the characteristics of e-learning and to explore its optimal education application.
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