中國大陸(Mainland China)做為社會科學學術研究對象，隨學科變遷以及兩岸情勢發展，在各時期有不同主題。承此，本文使用主題分析工具 (CATAR)，對「中國大陸研究」期刊於 1998~2015 年刊載之論文，透過論文的篇名與摘要文字，從事主題群聚(clustering)分析，藉以辨識顯著的研究主題，及其關鍵字，並以此觀察各主題發展趨勢。結果呈現出「中國大陸研究」之 473 篇文章，可歸類為七大主題，每一主題各有關鍵字。從每個主題的發表量(包括「發表..

With the rapid development of cross-strait situation, “Mainland China” as a subject of social science studies reflects different topics in different eras. This study applies an automatic content analysis tool(CATAR)to analyze the journal “Mainland China Studies”(1998-2015)to observe research trends based on clustering of the texts from the title and abstract of each journal article. The results show that the 473 articles published by the journal are clustered into seven salient topics. By publication n..

全球暖化改變了北極的地緣政治格局，也促使中國參與北極事務。北極為中國提供的機會包括:縮短通往歐洲和北美港口的航運距離，增加貿易競爭力;有助中國北方港口城市發展不同定位的港埠經濟，及改善中國東北地區的經濟結構;有助於中國取得北極蘊藏豐富的天然資源;及有助於緩解中國當前面臨的安全問題，如「麻六甲困境」。但中國也遇到若干挑戰，包括:北極海冰構成航行威脅，航運成本也會增加;北極國家對中國涉足北極的疑慮;偏重於亞洲的貿易格局制約中國對北極的投入;以及中國技術能量不足等..

Global warming has changed geopolitics of the Arctic and prompted China to participate in the Arctic affairs. The Arctic offers many opportunities for China. First, it shortens the shipping distances to European and North American ports in order to increase trade competitiveness. Second, it develops different kinds of harbor economy and improve economic structures in the northeast of China. Third, it is able to acquire rich natural resources in the Arctic. Fourth, the Arctic can ameliorate China’s security problems, suc..