臺灣博碩士論文加值系統

　　含雙 吩之雙亞胺基衍生物1與Fe2(CO)9在Benzene中反應，可得到錯化合物2及3(3a)。產物2為配位基上的兩個N原子與diironhexacarbonyl鍵結，兩個N原子各提供三個電子到兩個鐵金屬上。錯化合物3(3a)雖尚未有晶體結構圖，但經光譜分析，判斷應為cyclometalation產物。錯化合物2並以Triphenylphosphine (PPh3) 進行取代反應，生成空氣穩定的單取代產物4，以及雙取代產物5。

Right now is the point that mobile computing expansion unlimitedly. The wireless network evolve at a tremendous pace and there is no words can describe the reapidly evolution. To have a high bandwidth and performance network is to serve the clinets' need at any time any place. All of us are aware that location-based serveice will be needed urgently in the future. As a result, we propose a mobile information service system architecture to contain the need of the location-based service. And we also propose dynamic data management strategies to have an efficient data management and data allocation. After that, we present "centralized data managemetn strategy" and "loacation-based data management strategy" for centralized query and location-based query. Observe the access tendency of all the user. Then calculate the network transmission costs and response time of the whole system to be a basis of decision making. Find out the most proper time to do dynamic data alloction. At last, implement a simulation system according to the proposed informaton system architecture and dynamic data management stategies, to exam the usabilityof the dynamic data management strategies. Through the result of experiments, we sure that dynamic data management strategies can effectively decrease the network transmission cost and reduce the response time.

目錄
謝誌………………………………………………………… Ⅰ
圖目錄……………………………………………………… Ⅱ
表目錄……………………………………………………… Ⅳ
壹、緒論…………………………………………………… 1
貳、結果與討論…………………………………………… 7
參、實驗部分………………………………………………31
肆、參考文獻………………………………………………38
伍、附件……………………………………………………39

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　 研究所, 花蓮, 台灣, 2000