以書目耦合及共被引探討不同引用區間之研究前沿：以OLED領域為例

The study of different citation windows of research fronts in OLED: using bibliographic coupling and co-citation methods

張嘉彬(Chia-Pin Chang)

指導教授 ： 黃慕萱

國立臺灣大學/文學院/圖書資訊學研究所/博士(2011年)

https://doi.org/10.6342/NTU.2011.01943

摘要

研究前沿是一專業領域處於最前鋒的研究，通常掌握研究前沿之發展，可瞭解專業領域的研究焦點及未來發展趨勢，對於規劃國家發展藍圖及制定科技發展政策而言，亦是相當重要的參考資訊，因此其在近年來受到相當多的關注及重視。本研究以210篇OLED領域高被引文獻為對象，結合使用書目耦合及共被引等兩種分析方法，探討固定引用區間、半衰期引用區間（包含文獻引用半衰期及文獻被引用半衰期）及逐年引用區間等三種引用區間所產生之研究前沿，以探究2000年至2009年10年來OLED研究前沿之演進情形，並分析研究前沿之時效性及穩定係數等2項指標，應採用何值，以作為預測研究前沿出現之最佳指標。
研究結果顯示，三種不同引用區間中，逐年引用區間可找出最多之研究前沿，固定引用區間是最簡易且有效找出研究前沿之方式，半衰期引用區間則可作為固定引用區間及逐年引用區間找出研究前沿之補充方式。又研究前沿包含新興前沿、成長前沿、穩定前沿、衰退前沿及消失前沿等五種類型，其中新興前沿是未來研究趨向的象徵，最受到高度學者專家的重視，而三種不同引用區間中以逐年引用區間可找出最多項新興前沿。
如利用書目耦合及共被引針對三種不同引用區間所找出之研究前沿進行比較分析可知，兩種分析方法的效益相當，所找出之研究前沿可以互相補充，而為有效找出三種不同引用區間之研究前沿，固定引用區間建議採用書目耦合方式，逐年引用區間建議採用書目耦合方式，半衰期引用區間則建議採用文獻引用半衰期。此外，為能以精確及系統化的方法找出研究前沿，本研究利用時效性及穩定係數等2項指標驗證下一個引用區間出現相同研究前沿的能力。研究發現，時效性0.500及穩定係數0.400之數值，能夠當作預測研究前沿出現之最佳指標。
基於上述研究結果，建議為以最簡易及有效的方式找出研究前沿，應採用固定引用區間，為找出最多之研究前沿及新興前沿，應採用逐年引用區間。此外，在兩種分析方法中，應採用書目耦合方式，以找出最多且能夠較早探知研究前沿之出現。另為有效預測研究前沿之出現，以掌握專業領域的最新發展趨勢，則建議可將時效性及穩定係數納入相關研究。

關鍵字

研究前沿 ； 書目耦合 ； 共被引 ； 引用區間 ； 有機發光二極體

並列摘要

Research fronts are the most pioneering studies of specialities. With the command of the development of research fronts, one can easily realize the focus of study in present specialities and the future development trends. In the point of planning blueprint on national development and making policies on science and technology development, research fronts are also an important reference. Consequently, it nowadays receives a great many attention and emphasis.
This study is targeted at 210 highly-cited articles on OLED field, combining both bibliographic coupling and co-citation methods, exploring research fronts produced by the following three citation windows which include fixed citation window, sliding window and half life（including citing half life and cited half life）. It is undertaken to explore the advance of OLED research fronts from 2000 to 2009 and aims to analyze the values of currency index and the values of stability index and so as to decide from which values can be taken as important bases to predict the emergence of research fronts.
The results show that among the above mentioned three citation windows, sliding window can find out the most many research fronts; fixed citation window is the easiest and the most effective way to find out research fronts; and half life can be a complement way for sliding window and fixed citation window to find out research fronts. In addition, research fronts has five different types, including emerging fronts, growing fronts, stable fronts, shrinking fronts, and existing fronts. Among which, emerging fronts is the symbol of future research trend and highly emphasized by scholars and experts. Furthermore, sliding window can discover the most many emerging fronts.
By using bibliographic coupling and co-citation methods to make comparison in the research fronts produced by the above mentioned three citation windows, it illustrates that the effect is quite equal and can be supplement for one another. In order to find out research fronts effectively among the three citation windows, it is suggested to adopt bibliographic coupling for fixed citation window, bibliographic coupling for sliding window, and citing half life for half life. Moreover, on purpose of seeking out research fronts in a precise and systematical way, the study demonstrates the capability to predict the emergence of research fronts in the next citation window with the indexes of currency and stability. The results show that currency index 0.500 and stability index 0.400 can be the best indicator to forecast the emergence of research fronts.
Based on the above research results, it is recommended that adopting fixed citation window is the easiest and the most effective way to find out research fronts; adopting sliding window can find out the most many research fronts and also discover emerging fronts at most. Last but not least, between two methods, it is suggested to adopt bibliographic coupling to find out the most many research fronts and discover the emergence of research fronts earlier. Finally, this study advises to add currency index and stability index to relative studies in order to predict the emergence of research fronts effectively and have a better command of the latest development trends of specialities.

並列關鍵字

research fronts ； bibliographic coupling ； co-citation ； citation windows ； OLED

參考文獻

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