隨著資訊科技的發展與商業競爭環境的轉變，許多企業都開始導入資訊系統以改善商業流程與效率，進而提升企業的工作績效，但多數的資訊系統導入專案成效並不如預期。在過去資訊系統導入的相關文獻中，我們可以發現學者認為使用者參與的程度是影響系統導入成效的關鍵因素，且社會網絡相關研究也提出個人網絡關係會影響其在組織內的行為模式。然而，過去研究普遍著重於使用者參與對於資訊系統導入成功的影響，而缺乏對於影響使用者參與行為的相關探討。
因此，本研究試圖藉由社會網絡理論來探討在資訊系統導入時網絡中心性是否會對使用者參與行為造成影響。在網絡中心性的部份，我們以程度性、近距性、中介性及特徵向量性作為衡量指標探討其對於使用者參與四大層面所產生的影響，且進一步說明使用者參與四大層面對於系統成功之影響。
本研究採用TSC企業ERP系統導入專案為研究對象，共蒐集211份問卷樣本資料，並以UCINET 6、AMOS 5.0及SPSS17.0進行詳細的資料分析。分析結果顯示：（1）網絡中心性對於使用者參與四大層面皆有顯著之影響；（2）使用者參與四大層面之實際參與的活動與溝通活動對於系統導入成功有顯著之影響。因此我們認為企業在導入資訊系統時，可以藉由個人網絡關係擴散系統的相關知識，提升使用者願意參與系統導入的活動而有效改善導入的成功率。

With the development of information technology and the changes of competitive business environment.Many enterprises have begun to implement information systems to improve business processes and efficiency, futher increase work performance.But most of information system implementation projects do not achieve their estimated benefits.In the literature of information system implementation, we find scholars consider that the degree of user participation is one of critical success factors in information system implementation, and social networks research also suggests that individual social network relationship will affect their behavior within the organization. However, past studies generally focus on the influence of user participation in information system implementation success, so lack of personal behavior that affects the user participation.
Base on the social network theory, this study attempts to discuss whether the network centrality will affect the user participation or not in information system implementation.In aspect of network centrality, we used degree, closeness, betweenness and eigenvector as indicators to investigate the relationships between individual network centrality and four dimensions of user participation. Then we futher explore the user participation effect on system success.
In this paper, we adopted the ERP implementation project of TSC Company as an example.The sample data have 211questionnaires and analyze data via UCINET , AMOS and SPSS.Our empirical results show that : (1) network centrality positively affects the four dimensions of user participation; (2) hands-on activity and communication activity positively affects system success.Therefore, we consider that when enterprises implement information systems could be diffuse the systems-related knowledge through individual network relationships not only to enhance the user is willing to participate into system implemention activities, but also to improve the success rate of implement effectively.

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