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抽样统计了重庆师院等 4所高校的学报 (自科版 ) 1996～ 2 0 0 0年载文的学科分布。各刊所载论文的不同学科 ,按照论文数量由多到少排序 ,截取占前 70 %论文数量的学科为该刊的核心学科 ,得各刊的核心学科数分别都在4～ 5个。比较分析各刊核心学科的构成比例 ,发现多数刊物呈平缓下降分布 ,个别刊物呈陡峭下降分布 ,这两种分布形态差异经卡方检验有高度显著性。继而用各学科论文的各期发表数的变异系数 ,来衡量核心学科连续报道的稳定性 ,可见各刊的数学文章稳定性均较好 ,而其它学科变异系数大小不一。分析结果认为综合性学术刊物的核心学科构成以相对均衡和稳定为好
A sample of Chongqing Normal University and other colleges and universities in 4 academic journals (self-version) from 1996 to 2000 the dissertation distribution. The dissertation dissertations in different disciplines, sorted by more or less according to the number of dissertations, the interception of the top 70% of the number of dissertations for the journal’s core disciplines, each of the core disciplines were 4 to 5, respectively. A comparative analysis of the composition of the core disciplines of each journal reveals that the majority of publications showed a gradual decrease in distribution and the individual publications showed a steep decline in distribution. The two distribution patterns were highly significant by chi-square test. Then we use the coefficient of variation of published numbers of each dissertation to measure the stability of the continuous coverage in the core disciplines. The results show that the stability of the math articles in each journal is good, while the coefficient of variation of other disciplines varies. The analysis shows that the core disciplines of comprehensive academic journals are relatively balanced and stable