摘要 : This paper attempts to compare the research output and priorities of 25 major cuntries in renewable energy research. The main objective is to assess the research priorities of the major countries in frontier areas/subjects of rene... 展开 This paper attempts to compare the research output and priorities of 25 major cuntries in renewable energy research. The main objective is to assess the research priorities of the major countries in frontier areas/subjects of renewable energy using some bibliometric measures based on renewable energy literature. Subjects of high activity and subjects of low activity are identified for two time periods (1996-1997 and 1998-1999). Our findings show that the output of publications including articles, reviews, letters, notes, editorials, and book reviews of India, Greece, and Belgium declined between 1996-1997 and 1998-999. 收起