可信賴的網路教師評鑑系統平台建構之研究

Abstract

摘要 教師教學評鑑是促進教師自我成長暨提升學生學習的重要方法之一。目前國內各大專院校所採用的方式大致可分為傳統紙本評鑑方式或網路評鑑方式。前者所耗費的人力、時間、紙張較多，而後者由於沒有達到匿名的需求，容易造成學生不敢誠實表達內心的想法。因此本研究提出一個可信賴的網路教師評鑑系統平台，主要著重在強化透過網際網路所完成的教師教學評鑑匿名性及評鑑內容隱私性等相關安全性，以改善目前傳統紙本匿名評鑑方式與網路評鑑方式之缺點。 本研究以密碼學相關技術為基礎，發展一個可信賴的網路教師評鑑系統平台，系統的設計架構可以達到：一、只有上該門課之學生可以評鑑該門授課教師；二、須為匿名評鑑；三、每位學生只可對同一門課授課教師評鑑一次；四、除授課教師自己及行政管理者外不可讓第三者得知最後的評鑑結果；五、傳送的評鑑結果不會被修改或竊取。系統實作完成後我們讓學生使用網路教師評鑑系統來評鑑當學期授課教師的教學方式並填寫系統使用後的問卷調查表。 我們以中興大學4個科系所開設18門課程的533位大學生為實驗對象，問卷有效回收樣本共248位，問卷結果顯示有75%的學生同意「網路教師評鑑系統」能提供內容之隱私性，有72.18%的學生同意「網路教師評鑑系統」能提供身份之隱私性，有75.81%的學生贊成學校全面使用「網路教師評鑑系統」，由實驗結果可知「網路教師評鑑系統」確實可得到評鑑者的信賴。

關鍵字：電子投票、匿名性、教師評鑑

Abstract Teacher evaluation is an important method to promote teaching and student learning. The junior college and the university use either anonymous evaluating on the paper form or registered evaluating on the on-line system. It quite wastes manpower, time and paper to anonymous evaluate on the paper form. And registered evaluating on the on-line system may lead students to answer dishonest ideas. This paper proposed a trusty Web-based system platform for teaching evaluation. The main goals of the proposed system are to enhance the security such as anonymous, privacy and so on. Based on cryptography techniques, a trusty Web-based system platform for teaching evaluation is proposed in this thesis. The requirements for this system architecture include: 1.Students who only have this course can do the evaluating, 2.It must be evaluated anonymously evaluation, 3.Each student of every course can only evaluate once, 4.It can not let the other person know the results of the teaching evaluation besides teacher and system administrator, 5.The results of teaching evaluation will not be modified and stole. We let the students use our system to make the evaluation in term with the questionnaire. Participants included 533 undergraduates in National Chung Hsing University, and 248 sample size collected. They were from 18 courses of four different departments. The results of the questionnaire are: (1)75% of the students agree that our system can offer the privacy of the contents, (2)72.18% of the students agree that our system can offer the privacy of the identity, and (3)75.81% of the students prefer that the school to use our system. We can verify that our scheme will be trusted from the experimental results.

Keyword: e-voting, anonymous, teacher evaluation