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shizishanshang至尊木蟲 (職業(yè)作家)
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2012 JCR之個人見 已有1人參與
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去年對2011年SC部分雜志的自引做了分析說明,一年時間過去了,這些雜志有沒有收斂一些呢? 生物類(主要指與植物相關)老牌雜志的IF普遍沒有什么大變化。如plant cell去年8.987,今年超過9了,達到9.251;然而明年很不幸,應該還會掉到9以下; plant physiology 由去年6.535略升到今年的6.555,預計明年繼續(xù)持平,不會有大的起落;plant Journal由前年的6.948降到去年6.16,今年則止跌回升到了6.582,但是明年的結果仍不容樂觀,低于Plant physiology是肯定的,能保住6分的金身不破就算阿彌陀佛了;planta則由去年的勉勉強強地保住了3分金身不破(3.0)上升到了3.347,但是明年的IF仍然會在3左右徘徊,超過3的范圍不會太高。 下面接著去年觀察一下靠自引大幅提高IF的雜志及一些自引率非常低的雜志今年的變化。 先看PLANT CELL TISS ORG,去年IF3.09,自引率53%,去掉自引后IF為1.422. 今年則更離譜, JCR報告見http://admin-apps.webofknowledge ... PLANT+CELL+TISS+ORG Journal Self Cites Information The tables show the contribution of the journal's self cites to its impact factor. This information is also represented in the cited journal graph. Total Cites 5049 Cites to Years Used in Impact Factor Calculation 1406 Impact Factor 3.633 Self Cites 1615 (31% of 5049) Self Cites to Years Used in Impact Factor Calculation 924 (65% of 1406) Impact Factor without Self Cites 1.245 雖然IF升到了3.633,但是自引率也上升到了65%,去掉自引IF只有1.245,甚至比去年下降。 而MOL BIOL REP,去年IF為2.929,自引率為46%,去掉自引后IF只有1.568;今年自引率明顯下降,對應的IF也跟著下降。如下: Total Cites 5132 Cites to Years Used in Impact Factor Calculation 3017 Impact Factor 2.506 Self Cites 1296 (25% of 5132) Self Cites to Years Used in Impact Factor Calculation 886 (29% of 3017) Impact Factor without Self Cites 1.770 自引率為29%,去掉自引后IF為1.77。 相比之下,變本加厲的是PLANT MOL BIOL REP,http://admin-apps.webofknowledge ... =PLANT+MOL+BIOL+REP 去年的是 2.453,自引率57%,去掉自引后IF為1.047;今年IF則達到驚人的5.319,是怎么飆升上去的呢? 看下面的統(tǒng)計數(shù)據(jù)就一目了然了。 Journal Self Cites Information The tables show the contribution of the journal's self cites to its impact factor. This information is also represented in the cited journal graph. Total Cites 2985 Cites to Years Used in Impact Factor Calculation 984 Impact Factor 5.319 Self Cites 847 (28% of 2985) Self Cites to Years Used in Impact Factor Calculation 701 (71% of 984) Impact Factor without Self Cites 1.530 自引率高達71%,去掉自引率后其IF只有1.53; 老牌雜志Planta,http://admin-apps.webofknowledge ... ;amp;journal=PLANTA Total Cites 15450 Cites to Years Used in Impact Factor Calculation 1429 Impact Factor 3.347 Self Cites 457 (2% of 15450) Self Cites to Years Used in Impact Factor Calculation 89 (6% of 1429) Impact Factor without Self Cites 3.138 自引率6%,去掉自引后其IF仍達3.138,是PLANT CELL TISS ORG去掉自引后的IF的2.5倍,是PLANT MOL BIOL REP的兩倍,足見JCR的部分IF水分有多高。 另外如 PLANT SCI,http://admin-apps.webofknowledge ... p;journal=PLANT+SCI Journal Self Cites Information The tables show the contribution of the journal's self cites to its impact factor. This information is also represented in the cited journal graph. Total Cites 9736 Cites to Years Used in Impact Factor Calculation 932 Impact Factor 2.922 Self Cites 228 (2% of 9736) Self Cites to Years Used in Impact Factor Calculation 53 (5% of 932) Impact Factor without Self Cites 2.755 自引率仍然很低,需要指出的是,明年PLANT SCI的IF則會明顯上升,會超過3.5以上。 PLANT PHYSIOLOGY AND BIOCHEMISTRY,自引率略有上升 http://admin-apps.webofknowledge ... PLANT+PHYSIOL+BIOCH Total Cites 4894 Cites to Years Used in Impact Factor Calculation 874 Impact Factor 2.775 Self Cites 225 (4% of 4894) Self Cites to Years Used in Impact Factor Calculation 74 (8% of 874) Impact Factor without Self Cites 2.540 去年的驚天雜志:Energy Education Science and Technology http://admin-apps.webofknowledge ... NERGY+EDUC+SCI+TECH Journal Self Cites Information The tables show the contribution of the journal's self cites to its impact factor. This information is also represented in the cited journal graph. Total Cites 2992 Cites to Years Used in Impact Factor Calculation 1964 Impact Factor 31.677 Self Cites 2674 (89% of 2992) Self Cites to Years Used in Impact Factor Calculation 1785 (90% of 1964) Impact Factor without Self Cites 2.887 Back to Top 牽涉到分家等,在JCR里面查詢不到,不加以評價。 |
至尊木蟲 (知名作家)
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