本研究利用系統模擬方法評估 NFC (Near Field Communication) 系統績效。目的是提供系統建構者在系統建構前，針對不同的硬體配置估計系統運轉效能，選擇最佳系統設計。當系統建構完成後，針對消費者不同的隱私協商需求，估計系統的服務品質，支援消費者決策選擇。另可預估往後當需求增加時，系統可能面臨的窘境，提早構思解決之道以為因應。
我們以電子票券購票系統為例，建構電子購票系統的電腦模擬模型，經由統計數據分析確認影響系統績效的顯著因子，並搜尋在不同系統情境下最佳的決策變數組合，提供系統建構者、消費者的决策参考。

In this study, we evaluate the NFC(Near Field Communication) system performance using simulation method. The purpose is to provid the recommendations to set parameters for different hardware configuration before construction of the system.
After the system was built, we can evaluate the service quality according to the system's situation for the consumer to choice their privacy policy when they are doing privacy negotiation.
Besides, we could estimate the dilemma that we may face in the future and figure out the solution when the demand increases.
Take the E-ticket system for example, we construct the computer simulation model for the system, identity the significant factor that influences system performance through statistical and numerical analysis, finally provide the optimal solution for the system developer and the consumer to make decision.

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