The relationship between journal impact factor and paper quality, and the imbalance distribution of impact factors among different subjects are discussed.
论述了期刊影响因子与期刊的有用性、显示度、论文质量的关系以及学科间影响因子不平衡分布的问题；
The research deals with the correlations between the parameter of repetitive degrees and each factor of different subjects, distances and seasons in repetitive training for sprinting.
通过实验研究、数理统计、比较分析等方法，对重复训练法在短距离跑训练中不同专项、距离、季节与重复次数指标相关性进行实验研究。
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