2008年,《Nature》报道了基于Scopus数据库的期刊评价新指数SCImago Journal Rank(SJR)。与ISI相比较,SJR免费(http://www.scimagojr.com/)、刊源范围更广泛,2013年已涉及期刊近3万种。与广泛使用的期刊影响因子和期刊h指数不同,《Nature》文章认为SJR衡量了期刊的声望,且是对ISI的期刊影响因子的强有力的挑战。

传统期刊引文分析认为:期刊越多的被引用则其影响力越高。即认为所有引文重要性等价。在总被引频次相等的情况下,被《nature》或《science》大量引用和只被一些低水平期刊引用的论文影响力实际上常常不等。SJR指数使用类似于Google网页排名的PageRank算法,计算时给予来自高声望期刊的引用更高的权重,并以此规则迭代计算直到收敛,故在衡量期刊被引数量的同时,又重点考察了引文的价值。

一种期刊的SJR指数是通过迭代计算三年内该刊获得的“声望”而得到的,而这种“声望”可以通过期刊引用网中其它期刊的声望计算得到,声望的初始计算方法是用该刊过去三年发表论文在过去三年被引总次数除以该刊前三年发表的论文总数。一种期刊在引用中传递给另一半期刊的声望值由前者引用后者的引文占其总引文数的比例决定。

SJR将所有Scoupus期刊、图书、会议文集分为27个学科。SJR将收录同一学科中的期刊按SJR指数从高到低进行排序分区,分为Q1(前0~25% )、Q2 (前25%~50% )、Q3 (前50% ~75% )和 Q4(前75% ~100%) 4个区,可在SJR平台查询。以物理类学科为例,物理与天文为一级学科,下分:Physics and Astronomy、Acoustics and Ultrasonics、Astronomy and Astrophysics、Atomic and Molecular Physics, and Optics、Condensed Matter Physics、Instrumentation、Nuclear and High Energy Physics、Physics and Astronomy (miscellaneous)、Radiation、Statistical and Nonlinear Physics、Surfaces and Interfaces 共15个二级学科,截至2013年共有1526种期刊与系列图书、会议文集。期刊分区在二级学科下进行,下表是2013年非线性与统计物理类期刊的分区情况:

Rank Title Type SJR Quartile SJR Country
1 Progress in Quantum Electronics j Q1 3.97 United Kingdom
2 Advances in Atomic, Molecular and Optical Physics k Q1 2.124 United States
3 Probabilistic Engineering Mechanics j Q1 1.713 United Kingdom
4 Communications in Mathematical Physics j Q1 1.699 United States
5 Nonlinearity j Q1 1.667 United Kingdom
6 Journal of the Optical Society of America B: Optical Physics j Q1 1.525 United States
7 Letters in Mathematical Physics j Q1 1.137 Netherlands
8 Physica D: Nonlinear Phenomena j Q1 1.048 Netherlands
9 Advanced Nonlinear Studies j Q2 1.035 United States
10 Annales Henri Poincare j Q2 1.016 Switzerland
11 Quantum Information Processing j Q2 0.997 United States
12 Reviews in Mathematical Physics j Q2 0.985 Singapore
13 Physical Review E – Statistical, Nonlinear, and Soft Matter Physics j Q2 0.97 United States
14 Russian Journal of Mathematical Physics j Q2 0.949 Russian Federation
15 Infinite Dimensional Analysis, Quantum Probability and Related Topics j Q2 0.941 Singapore
16 Quantum Information and Computation j Q2 0.905 United States
17 Journal of Statistical Physics j Q2 0.883 United States
18 Nonlinear Processes in Geophysics j Q2 0.824 Germany
19 Chaos j Q3 0.808 United States
20 Journal of Physics A: Mathematical and Theoretical j Q3 0.715 United Kingdom
21 Journal of Mathematical Physics j Q3 0.713 United States
22 Quantum Electronics j Q3 0.655 United Kingdom
23 Theoretical and Mathematical Physics j Q3 0.566 United States
24 Open Systems and Information Dynamics j Q3 0.526 Netherlands
25 Reports on Mathematical Physics j Q3 0.454 United Kingdom
26 Journal of Nonlinear Mathematical Physics j Q3 0.445 Singapore
27 International Journal of Modern Physics C j Q3 0.436 Singapore
28 Modern Physics Letters B j Q4 0.32 Singapore
29 International Journal of Nonlinear Sciences and Numerical Simulation j Q4 0.292 Germany
30 Journal of Statistical Mechanics: Theory and Experiment j Q4 0.272 United Kingdom
31 International Journal of Modern Physics B j Q4 0.267 Singapore
32 Radiophysics and Quantum Electronics j Q4 0.236 United States
33 Transport Theory and Statistical Physics j Q4 0.211 United Kingdom
34 Nonlinear Optics Quantum Optics j Q4 0.175 United States
35 Nonlinear Phenomena in Complex Systems j Q4 0.128 Belarus
36 PMC Physics A j Q4 0.123 United Kingdom

注:j:期刊;k:系列图书

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