Misc articles of interest to SigMetrics

Eugene Garfield eugene.garfield at THOMSONREUTERS.COM
Wed Nov 9 12:49:43 EST 2011


TITLE:          The Modal Number of Citations to Political Science
                Articles Is Greater than Zero: Accounting for Citations in Articles and
                Books (Article, English)
AUTHOR:         Samuels, DJ
                p.783-792 CAMBRIDGE UNIV PRESS, NEW YORK

                 HAMILTON DP        SCIENCE               251:25    1991;
                 CITATION*  item_title;
                 GARFIELD E         SCIENTIST              12:10    1998


ABSTRACT:       Existing measures of article and journal. impact count
citations that articles receive in other articles. Such metrics ignore citations that articles receive in monographs and edited-volume chapters.
Counting article citations in books reveals that popular measures of article and journal impact discriminate against articles and journals that receive citations in books rather than (or in addition to) citations in other articles, thereby discriminating against the research, contributions of scholars who publish such articles. Analysis of citation patterns over 25 years reveals that citations in. books have declined in American politics research while citations in articles have increased; citations in both books and articles remain important in the other subfields. Findings suggest that political scientists should supplement indicators of journal impact based on citations in peer-reviewed articles with, measures that account for the citations that published articles receive in books.

AUTHOR ADDRESS: DJ Samuels, Univ Minnesota, Minneapolis, MN 55455 USA

[ ]<-- Enter an X to order article (IDS: 838CV 00016)  ISSN: 1049-0965
TITLE:          Is the h-index Predictive of Greater NIH Funding Success
                Among Academic Radiologists? (Article, English)
AUTHOR:         Rezek, I; McDonald, RJ; Kallmes, DF
SOURCE:         ACADEMIC RADIOLOGY 18 (11). NOV 2011. p.1337-1340

SEARCH TERM(S):  HIRSCH JE          P NATL ACAD SCI USA   102:16569 2005

KEYWORDS:       H-index; academic productivity; NIH funding; Academic

ABSTRACT:       Rationale and Objectives: Despite rapid adoption of the
Hirsch index (h-index) as a measure of academic success, the correlations between the h-index and other metrics of productivity remain poorly understood. The aims of this study were to determine whether h-indices were associated with greater National Institutes of Health (NIH) funding success among academic radiologists.

Materials and Methods: Using the Scopus database, h-indices were calculated for a random sample of academic radiologists with the rank of professor. Using the NIH tool Research Portfolio Online Reporting Tools Expenditures and Reports, we determined the number, classification, and total years of NIH grant funding as principal investigator for each radiologist. Differences in h-index, sorted by funding status, were determined using Wilcoxon's tests. Associations between h-index and funding status were determined using logistic regression. Significant correlations between h-index and grant metrics were determined using Spearman's rho.

Results: Among 210 professors of radiology, 48(23%) secured at least one NIH grant. The mean h-index was significantly higher among individuals who secured at least one NIH grant (19.1) compared to those who did not
(10.4) (P < .0001). Professors with h-indices < 10 compared to those with h-indices > 10 were significantly less likely to receive NIH funding (odds ratio, 0.07; P = .0321). However, h-indices > 10 were not significantly predictive of greater funding. No significant relationships were observed between h-index and the number of grant awards, years of prior funding, the amounts of grant awards, or grant classification.

Conclusion: Having obtained at least one NIH grant was associated with a higher h-index, yet multiple or large grants, such as those for program projects, were not predictive of higher h-indices.

AUTHOR ADDRESS: RJ McDonald, Mayo Clin, Coll Med, Dept Radiol, 200 1st St
                SW, Rochester, MN 55905 USA
TITLE:          All Scale-Free Networks Are Sparse (Article, English)
AUTHOR:         Del Genio, CI; Gross, T; Bassler, KE
SOURCE:         PHYSICAL REVIEW LETTERS 107 (17). OCT 17 2011.
                p.NIL_175-NIL_178 AMER PHYSICAL SOC, COLLEGE PK

SEARCH TERM(S):  DESOLLAPRICE DJ  rauth; PHYS REV LETT  source_abbrev_20


ABSTRACT:       We study the realizability of scale-free networks with a
given degree sequence, showing that the fraction of realizable sequences undergoes two first-order transitions at the values 0 and 2 of the power- law exponent. We substantiate this finding by analytical reasoning and by a numerical method, proposed here, based on extreme value arguments, which can be applied to any given degree distribution. Our results reveal a fundamental reason why large scale-free networks without constraints on minimum and maximum degree must be sparse.

AUTHOR ADDRESS: CI Del Genio, Max Planck Inst Phys Komplexer Syst,
                Nothnitzer Str 38, D-01187 Dresden, Germany


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