臺灣博碩士論文加值系統

組織中導入新的資訊科技系統，目的通常是為了增進效率，而為了提高新系統的效益，對於新系統使用者接受行為的研究是相當重要的。本研究主要的目的是探討政府機關導入「共同供應契約電子採購系統」，以科技接受模式（Technology Acceptance Model, TAM）為觀點，模式中所提之「系統品質」及「資訊品質」為該系統之「系統特性」，並作為TAM的「外部變數」，用以探討影響使用者的認知信念，以期預測該系統使用者的使用意圖，進而瞭解使用者的實際使用情形，並提供政府未來在改善「共同供應契約電子採購系統」之參考。
本研究以國立大學「共同供應契約電子採購系統」使用者為研究對象，採用問卷調查法來蒐集資料，以郵寄方式寄發紙本問卷，總計回收有效問卷113份。將所收集之資料透過結構方程模式（Structural Equation Modeling, SEM）以LISREL軟體加以分析，研究結果如下：
一、系統品質對有用性認知、易用性認知均會產生顯著正向影響，且對易用性認知的影響程度高於有用性認知。
二、資訊品質對有用性認知、易用性認知均會產生顯著正向影響，且對有用性認知的影響程度高於易用性認知。
三、易用性認知沒有正向影響有用性認知並。
四、有用性認知與易用性認知均顯著正向影響行為意圖，而有用性認知對行為意圖的影響程度最大。
五、行為意圖顯著正向影響實際使用。
其次，本研究分析結果發現，系統特性是提升使用者認知信念很重要及不可或缺的影響因素。因此，相關主管機關應就如何提升「共同供應契約電子採購系統」之系統特性加以檢討，使能符合或提升使用者的信念認知，增強使用者的使用意願，進而增加使用之次數，如此便可落實政府導入採購電子化之政策。

The purpose of introducing new information technology systems is to increase efficiency, while to understand user’s acceptance behavior toward the new systems is quite difficult. For this, Technology Acceptance Model (TAM) has been widely applied to predict users’ acceptance behavior toward new information system or technology.
In spite of the fact that TAM has excellent prediction performance in the related areas, the role of its external variables has still drawn close attention and intense discussions. In this model, the system characteristics have great effect on the behavioral intention and satisfaction, and thus are the main concerns of this study. In addition, the key factors to judge the system or information qualities are based on the satisfaction and performance evaluation.
Based on TAM, it is well-known that the system and information qualities are the most important characteristics on E-procurement system of Inter-entity supply contracts. Besides, the external variables provide a realization of the users from this model. It also gives us better understanding of the behavioral intension during processing. Moreover, the new system also provides useful information in our country.
In this study, the sample was drawn mainly from national university staff members, who have used the E-procurement system before. The data was collected by the survey of questionnaires, which was delivered by mail. Then, we used the software LISREL to do the testing of our research hypotheses by applying Structural Equation Modeling (SEM), which is expected to be able to help us get better understanding and explanation on the user’s acceptance behavior in this new information system or technology.
By SEM, this study indicated that the system characteristics were the main factors influencing user’s use behavior. Therefore, the managers should focus on the system characteristics and try to figure out how to enhance the users’ use intentions and frequencies by improving system quality and information quality, and furthermore make the government’s policy work more successfully.

中文摘要 i
英文摘要 ii
誌謝 iii
目錄 iv
表目錄 vi
圖目錄 ix
一、 緒論 1
1.1 研究背景與動機 1
1.2 研究目的 5
1.3 研究流程 6
二、 文獻探討 9
2.1政府採購 9
2.2電子化採購 14
2.3資訊科技接受度相關理論 26
2.3.1 理性行為理論 26
2.3.2 計畫行為理論 34
2.3.3 科技接受模式 37
2.3.4 外部變數 46
2.3.5系統特性 47
三、 研究方法 52
3.1共同供應契約電子採購系統簡介 52
3.2研究架構 54
3.3研究假設 56
3.4研究變數操作型定義與衡量 58
3.5問卷設計與調查 65
3.5.1各構面之變數與衡量 66
3.6問卷前測 70
3.7資料蒐集與研究對象 70
3.8資料分析方法與工具 70
四、 資料分析 73
4.1樣本資料敘述性統計 73
4.1.1樣本資料分析 73
4.1.2敘述性統計 79
4. 2相關係數分析 86
4. 3驗證性因素分析 87
4.3.1衡量模式建構與驗證性因素分析 89
4.4線性結構關係模式分析 89
4.4.1 LISREL模式之變項與建立 89
4.4.2結構模式與測量模式之建構 93
4.4.3結構方程模式整體評鑑 95
4.4.4測量模式分析與檢定 99
4.4.5結構模式分析與檢定 105
4.4.6第一次修正後結構方程模式整體評鑑 108
4.4.7第一次修正後測量模式分析與檢定 109
4.4.8第一次修正後結構模式分析與檢定 111
4.4.9第二次修正後結構方程模式整體評鑑 116
4.4.10第二次修正後測量模式分析與檢定 116
4.4.11第二次修正後結構模式分析與檢定 118
4.4.12各潛在變項因果關係結果與假設之驗證 121
4. 5綜合討論 124
五、 結論與建議 127
5.1研究結論 127
5.2研究貢獻 130
5.3研究限制 131
5.4後續研究與實務建議 132
參考文獻 134
附錄一 148

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