作　　者： ; ;

机构地区： 井冈山大学

出　　处： 《大学图书情报学刊》 2010年第1期3-5,共3页

摘　　要： 文献半衰期和普赖斯指数是用来测度文献老化速度的两个重要指标。文章从文献老化B-K方程出发,首次给出文献半衰期与普赖斯指数之间的关系式。用该关系式拟合了超导专业期刊的引文数据。计算结果表明:B-K方程的半衰期计算公式和莫蒂列夫修正式的半衰期计算公式对某些文献半衰期小于3年的学科(专业)是不适用的;新的计算引文半衰期公式所得到的结果与内插法得到的结果非常接近;并且该公式给出的半衰期范围要比B-K方程的半衰期和莫蒂列夫修正式的半衰期要大得多。因此,新的计算引文半衰期公式更具普适性。 Half-life of literature and price index are two important indexes to evaluate literature obsolescence. A relationship between half-life of literature and price index was firstly obtained from B-K equation of literature obsolescence. Data of references of documents were fitted in superconductor journals. The comparisons of results fitted by three methods were shown that the new method was larger scope than that of B-K equation and modified equation of MOTI/I eB while the half-life of literature was less than 3 year for subject or specialty. The scope of half-life calculated by new method was close to the resuhs calculated by interpolation method. The scope of half-life calculated by the new method was more than that of B-K equation and the modified equation of MOTI Л eB. Therefore, the new method has more generality than B-K equation and the modified equation of MOTI Л eB. Key words： B-K equation; literature obsolescence; half-life of literature; price index

关 键 词： 方程 文献老化 文献半衰期 普赖斯指数

领　　域： [文化科学]