JCR – Impact factor (since 1994)
Journal Citation Reports (JCR) je faktografska baza podatkov, ki jo vsako leto izda Clarivate Analytics iz ZDA. Vsebuje zapise s podatki o faktorju vpliva (IF – impact factor) za pomembnejše serijske publikacije iz svetovne produkcije. V sistemu COBISS.SI so na voljo podatki od leta 1994 dalje. Baza podatkov je dostopna samo uporabnikom na področju Slovenije.
Contents
JCR is an important tool for journal evaluation on the basis of citation data, gathered from more the 8,400 internationally renowned scientific and professional journals. Impact factors are published annually in two editions: JCR Science Edition (JCR SE), which contains data from science and technology journals, and JCR Social Sciences Edition (JCR SSE), which includes data from social sciences journals.
In the COBISS.SI system, corrections, fewer than 1 promile, are integrated in the database; they refer to supplemented impact factor data and the creation of new records (e.g. record for serial subseries).
Display format
Short: year, serial title, impact factor (IF)
Full: year, serial title, ISSN, impact factor (IF), country of publication, category
The following data describe the category (example: ISSN 0021-8782, 2005):
- category (AY – anatomy & morphology)
- journal position within category, regarding impact factor (4/15)
- quarter (1)
- impact factor middle value within category (x=1.592)
- impact factor minimum value within quarter (IFmin=2.01)
- impact factor maximum value within quarter (IFmax=4)
Some journals are included in both databases (JCR SE in JCR SSE) and some journals in more categories.
Sources
Journal Citation Reports – JCR Science Edition (JCR SE) and Journal Citation Reports – JCR Social Sciences Edition (JCR SSE), CD ROM editions.
List of search prefixes and suffixes
List of search prefixes
By using the search prefixes you determine the search index you wish to search. Below is a list of search prefixes with their meaning and examples of use:
| What does it mean? | Prefixes | Search example |
|---|---|---|
| Country of publication | CO= | CO=Belgium |
| ISSN | SC= | SC=0141-9331 |
| Category | CA= | CA=communication |
| Category SE | CN= | CN=veterinary sciences |
| Category SE – code | CP= | CP=ZC |
| Category SSE | CD= | CD=applied linguistics |
| Category SSE – code | CS= | CS=OT |
| Year | PY= | PY=2011 |
| Title | TI= | TI=philosophical magazine |
List of search suffixes
When searching in the basic index, i.e. word search, you can add search suffixes to the words in order to limit the word search to an individual search index. Below is a list of search suffixes with their meaning and examples of use:
| What does it mean? | Suffix | Search example |
|---|---|---|
| Category | /CA | language/CA |
| Category SE | /CN | veterinary()sciences/CN |
| Category SSE | /CN | family()studies/CD |
| Title | /TI | law(1N)economics/TI |
Information on database and provider
Information on database:
- Database type: factual
- Coverage: data on serials impact factors
- Number of records: over 215,000
- Updated: once a year
Information on provider:
- Provided by: Clarivate Analytics
- Address: 22 Thomson Place, 36T3, Boston, MA 02210
- Telephone: +442035536154
- URL: http://clarivate.com/