Department Blog

BioAg Sciences

Scopus Training on May 12

May 5th, 2010 by Keir Reavie

Are you interested in learning how to use Scopus to analyze the prestige of research publications? Have you heard about the new SNIP and SJR metrics that compare and assess the popularity and impact of journal citations?

The Library invites you to attend a Scopus workshop on May 12th. For your convenience we have scheduled two sessions:

9:30-11:00am — Sacramento Medical Center – Education Building — Room 2205

1:30-3:00pm — UC Davis campus – Shields Library — Library Instruction Lab    (Room 165)

Representatives from the Scopus office will offer an overview of this faculty citation database and present in detail the analytic tools of the database, including the new SNIP and SJR metrics. SNIP (source normalized impact per paper) measures a journal’s contextual citation impact, factoring in the characteristics of the subject field, to include the frequency at which authors cite other papers in their reference lists and the life cycle of a citation’s impact. The SJR indicator factors in the subject field, quality and reputation of a journal and is based on citation weighting schemes and the eigenvector.
We hope that you will be able to join us. The UC trial access to Scopus continues through December 2010. We would appreciate hearing any comments you have about your use of the Scopus and its effectiveness in meeting your needs. An online survey form is accessible at

For more information about Scopus, please contact your library subject specialist or department heads:

Impact Factors & Journal Citation Reports

August 17th, 2009 by Ruth Gustafson

ONLINE through UC CDL license: Impact Factors and Journal Rankings

Journal Citation Reports (JCR):  As of late 2008, UC campuses have access to JCR as part of a CDL consortial license.

Thomson Reuters notes that “Journal Citation Reports® offers a systematic, objective means to critically evaluate the world’s leading journals, with quantifiable, statistical information based on citation data. By compiling articles and cited references, JCR Web helps to measure research influence and impact of research journals and shows the relationship between citing and cited journals.”  JCR is available in Science and Social Sciences editions.

NOTA BENE: Definition of terms, details on how the metrics are calculated, and information on the validity, manipulation, and misuse of Impact Factors are provided at the following Wikipedia entry:

GETTING STARTED:   The JCR link at the top takes you to the default setting of reviewing SCIENCE journals by broad subject categories.  After clicking SUBMIT, choose your preferred category (you may need to review several in interdisciplinary fields)  and SUBMIT.  Note that the sort order is alphabetic by journal title.  For the most common rankings arrangement,  change the “Sorted by” in the top left to IMPACT FACTOR and click on SORT AGAIN.

CAVEAT:  Review journals typically rank very highly using this method.  It is not unusual for the top ten in a subject category for this type of  ranking to have several review journals listed.

HELP AVAILABLE:  All BioAg library classes on literature searching now include a section on using this new resource. Sign up for a BioAg class at:

You may also request an appointment with a BioAg librarian subject specialist by e-mailing or by calling the BioAg Reference Office, Monday-Friday, 9am-5pm at                   (530)752-6196

Don’t know who your BioAg librarian subject specialist is? Consult