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5.4.Journals

The web of science can be reached by going through the UW web of science database at http://www.lib.washington.edu/databases/isi/wos.html
Select ISI Journal Citation Reports to search for impact factor and immediacy index information for a specific journal or group of journals.

Impact Factor

A journal impact factor is a measure of the frequency with which the "average article" in a journal has been cited in a particular year. The impact factor will help you evaluate a journal’s relative importance, especially when compared to others within the same field.

The impact factor is calculated by dividing the number of current citations for articles published in the two previous years by the total number of articles published in the two previous years.

Immediacy Index

A journal Immediacy Index is a measure of how quickly the "average article" in a journal is cited. The Immediacy Index will tell you how often articles published in a journal are cited within the same year.

The Immediacy Index is calculated by dividing the number of citations for articles published in a given year by the number of articles published in that year.

The Immediacy Index is useful in comparing how quickly journals are cited. Because it is a per-article average, the Immediacy Index tends to discount the advantage of large journals over small ones. However, frequently issued journals may have an advantage here, because an article published early in the year has a better chance of being cited than one published later in the year. For comparing journals specializing in cutting-edge research, the Immediacy Index can provide a useful perspective (see How to Find the Hottest Journals).

Citing Half-Life

The citing half-life is the number of publication years from the current year that account for 50% of the current citations published by a journal in its article references. This figure helps you evaluate the age of the majority of articles referenced by a journal.

The chronological distribution of the cumulative percent of citations given out is shown in the Citing Half-Life Calculation dialog box. Only those journals publishing 100 or more citations have a citing half-life. Cited-only journals do not have citing half-lives.

Dramatic changes in Citing Half-Lifes over time may indicate a change in a journal’s format.

Journals relevant to previous SEAL publications

Abbreviated Journal Title

2002
Total Cites

Impact
Factor

Immediacy
Index

2002
Articles

Cited
Half-life

IEEE T DIELECT EL IN

886

0.860

0.148

108

4.5

IEEE T IND APPL

2967

0.764

0.113

194

7.7

TAPPI J

2085

0.474

0.115

>10.0

J ELECTROSTAT

580

0.404

0.107

7.4

IEEE T POWER DELIVER

1564

0.317

0.110

127

7.4

APPITA J

372

0.259

0.043

7.7

Select journals

Abbreviated Journal Title

2002
Total Cites

Impact
Factor

Immediacy
Index

2002
Articles

Cited
Half-life

NATURE

326546

30.432

7.504

889

6.9

SCIENCE

296080

28.956

5.839

987

6.6

IEEE SPECTRUM

822

0.848

0.322

5.2

ADV MATER

13688

6.801

1.025

402

3.7

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research -> Geographies of Race and Food
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research -> Why Everyday Life Matters: Class, Community and Making Life Livable Les Back
research -> Ecocritique and the Materialities of Animation

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