SJR - Help

Est modus in rebus (There is a proper measure in things). Horatio.

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The indicators included in the SJR portal were calculated from the information exported from the Scopus® database on March 2007 and will be updated periodically. For this reason some of the figures showed in the SJR portal and Scopus® may not match. The coverage period of country and journal indicators is from 1996 to 2006.

Journal Ranking Parameters

The information can be retrieved using different fields:

Subject Area: All or one of the 27 great thematic areas under which all the journals of Scopus® are classified can be selected.
Subject Category: All or one of the 295 specific subject categories under which all the journals of Scopus® are classified can be selected.
Country (ISO codes): All (229 countries) or one of the shown countries can be selected.
Year: Publication year of Scopus® journals.
Display journals with at least: You can set a 'citable documents' or 'total cites' threshold.

Journals can be ranked by: SJR, Cites per document (2 years), H Index, Title, Total documents, Citable documents (3 years), and Total cites (3 years).

Journal Search

Journal Title: enter words or full title of the journal
ISSN: enter digits without hyphens

Journal Indicators

The following indicators are calculated:

Rank: Journal Rank.
Title: Journal title.
SJR (SCImago Journal Rank): The SJR is an indicator that expresses the number of connections that a journal receives through the citation of its documents divided between the total of documents published in the year selected by the publication, weighted according to the amount of incoming and outgoing connections of the sources. See detailed description of SJR.
H Index: H index of de journal in this database. The h-index is an index that quantifies both the scientific productivity and the scientific impact of a journal (it is also applicable to scientists, countries...). The index is based on the set of the journal's most quoted papers and the number of citations that they have received in others publications. (see H-index wikipedia definition).
Total Docs./Total Documents: Output of the selected period. The calculation of this indicator considers all the types of documents included in a journal.
Total Docs. (3years): Total of documents published in a 3 year period. The calculation of this indicator takes into account the total of works (any type of document) published in the three previous years. For example, Total Docs (3years) of 2006 is calculated on the basis of the works published in 2003, 2004 and 2005.
Total Refs./Total References: Total number of references. It is the sum of all the bibliographical references of journal per year.
Total Cites (3years)/Total Cites: Total of document citations received by a journal in a 3 year period. This indicator is estimated taking account of all types of documents contained in a journal in the selected year and the bibliographical references they include to any published document in the three previous years.
Citable Docs./Citable Documents: Total of articles and reviews published in a 3 year period. The calculation of this indicator is based exclusively on scientific articles and reviews from the three years previous to the selected year.
Cites x Doc. (2years)/Cites per Documents (2 years): Citation average by document in a 2 year period. This indicator is calculated considering the number of citations received in the previous 2 years and the total of documents published in the selected year.
Cites x Doc. (3years)/Cites per Doc (3 years): Citation average by document in a 3 year period. This indicator is calculated considering the number of citations received in the previous 3 years and the total of documents published in the selected year.
Cites x Doc. (4years)/Cites per Doc (4 years): Citation average by document in a 4 year period. This indicator is calculated considering the number of citations received in the previous 4 years and the total of documents published in the selected year.
Ref. x Doc.: Average of references by document. In order to find this indicator the total of references included in the documents contained in a journal for the selected year is divided by the total of documents published in that same year.
Country: Journal's country.
Self Cites: Journal self-citation. This indicator is estimated taking account of all types of documents contained in a journal in the selected year citing the journal in which they are published.
Non-citable documents (Available in the graphics): This indicator is calculated by the difference between Total Docs. and Citable Docs.
Cited Documents (Cited Doc.): Number of documents that received at least one citation in a 3 year period.
Uncited Documents (Uncited Doc.): Number of documents that not received at least one citation in a 3 year period. This indicator is calculated by the difference between Total Docs. (3 years) and Cited Doc.
Documents with authors from several countries: Number of documents published by authors from several countries.

Embedding

This functionality enables you to embed a selected journal image into your website or blog. This image shows three selected journal indicators with their values:

SJR value of last year.
Cites per doc: Citation average by document in a 2 year period.
Total cites: Total of document citations received by this journal in a 3 year period.

Moreover, it shows a graph with the indicators evolution through the time (1999-2006).

In order that, your journal image can be well custom into your website, embedding function offers the ability to customise it: you’ll be able to elect to display journal title or not into your image, only select or unselect "Display journal title".

To embed an image, just copy the code from 'Embed this in your html code'.

Once you’ve copied the code, just paste it into your website or blog to embed it. Later on, you will able to access to complete journal report by clicking this embedded image.

Country Ranking Parameters

The information can be retrieved using different fields:

Subject Area: All or one of the 27 great thematic areas under which all the journals of Scopus® are classified can be selected.
Subject Category: All or one of the 295 specific subject categories under which all the journals of Scopus® are classified can be selected.
Region: All or one of the 10 great geographic regions can be selected.
Year: Publication year of Scopus® documents.
Display countries with at least: You can set a threshold for documents, citable documents or cites.

Countries can be ranked by: Cites per document (2 years), H Index, Documents, Citable documents, and Cites.

Country Indicators

The following indicators are calculated:

Rank: Country Rank.
Country. (229 countries)
Documents: Total of published documents. The calculation of this indicator considers all types of documents included in a journal country.
Citable Documents: Total of articles and reviews published in the selected year.
Cites/Total Cites: Citation. This indicator is calculated considering the number of citations received in the selected country.
Self Cites: Country self-citation. This indicator is estimated taking account of all types of documents published by a country in the selected year citing itself.
Cites x Doc./Cites per Doc.: Citation average by document in a 2 year period. This indicator is calculated considering the number of citations received in the previous 2 years and the total of documents published in the selected year.
H index: H index of de country in this database. The h-index is an index that quantifies both the scientific productivity and the scientific impact of a country (it is also applicable to scientists, journals...). .
Self Cites per Doc.: Average self-citations by document
Non-citable Documents (Available in the graphics): This indicator is calculated by the difference between Total Docs. and Citable Docs.
Cited Documents (Cited Doc.): Number of documents that received at least one citation in a 3 year period.
Uncited Documents (Uncited Doc.): Number of documents that not received at least one citation in a 3 year period. This indicator is calculated by the difference between Total Docs. (3 years) and Cited Doc.
Documents with authors from several countries: Number of documents published by authors from several countries.
% Region: Relative input’s country to the total of regional publication output. Rate of documents published by a country in regard to total of documents published by a region.
% World: Relative input’s country to the total of world publication output. Rate of documents published by a country in regard to worldwide published documents.

Compare

From the SCImago Journal & Country Rank Home page, you can access the two Compare features: Countries and Journals

Countries

This tool enables you to compare the evolution through the time among different indicators available in the countries page. Select from 1 to 4 countries and click “Compare Countries” to view comparison tables of evolution of any indicator during 1996-2006 period. You can refine search filtering access by Subject Area or Subject Category. You can access to other indicators results by clicking the corresponding button.

Journals

This tool enables you to compare the evolution through the time among different indicators available in the journals page. Select from 1 to 4 journals and click “Compare Journals” to view comparison tables of evolution of any indicator during 1996-2006 period. You can insert trough three characters included in the journal title into the box and select a journal from the list. You can access to other indicators results by clicking the corresponding button.

Map Generator

From the SCImago Journal & Country Rank Home page, you can access to Map Generator function.

This tool enables you to build real time maps in reply to user preferences. You can select a country, a period of two years (among 1996 to 2006) and two types of maps: Co-citation networks or Bubble charts. Click “Generate Maps”.

Co-citation networks

If you select Co-citation networks the system will show a map where Subjects Areas will be connected by journal co-citation. The size of labels shows the amount of scholarly literature in this field and period. You can displace through the map and render it more visible by clicking one of a variety of labels. You can click “Full Screen Map” and scroll full screen map. Subject Categories is unavailable yet.

Bubble charts

Subject Areas

If you select Bubble Charts, the system will show a graph where “H index” indicator is sited in the X axis (the H index value is constant for all periods, is based on all documents and citations received since 1999 to 2006). In the Y axis is sited the Cites per Document Indicator of Subject Areas. The Z variable is the size of the bubble that is the size of scholarly literature of Subject Area. Under the chart you can view the symbol-template. Above any Subject Area you can view the complete name of field and the total of documents in that period.

At the top of chart are available a set of indicators (Documents, Citable Documents, Cites, Self Cites, Cites per Document, H index) that you can select according yours preferences and make graphs as required, having regard for three variables: X axis, Y axis and the size of bubbles.

Top 28 Subject Categories

As with aggregation of Subject Area, you can view a bubble chart with top 28 Subject Categories with largest scholarly literature in this period. In this chart, “H index” indicator is sited in the X axis (the H index value is constant for all periods, is based on all documents and citations received since 1999 to 2006). In the Y axis is sited Cites per Document Indicator of Subject Categories. The Z variable is the size of the bubble that is the size of scholarly literature of Subject Category. Under the graphic you can view the symbol-template. Above any Subject Category you can view the complete name of field and the total of documents in that period. At he top of graphic are available a set of indicators (Documents, Citable Documents, Cites, Self Cites, Cites per Document, H index) that you can select according yours preferences and make graphs as required, having regard for three variables: X axis, Y axis and the size of bubbles.