Contents of Scientometrics Vol:80, No:1 (July 2009)
Eugene Garfield
garfield at CODEX.CIS.UPENN.EDU
Wed Jun 24 17:36:51 EDT 2009
Scientometrics, Vol. 80, No. 1 (JULY 2009)
Listing of individual papers + abstracts follows this contents page
CONTENTS
Werner Marx, Manuel Cardona
The citation impact outside references – formal versus informal citations
3
Yoshiyuki Takeda, Shiho Mae, Yuya Kajikawa, Katsumori Matsushima
Nanobiotechnology as an emerging research domain from nanotechnology: A
bibliometric approach 25
Ling-Li Li, Guohua Ding, Nan Feng, Ming-Huang Wang, Yuh-Shan Ho
Global stem cell research trend: Bibliometric analysis as a tool for
mapping of trends from 1991 to 2006 41
Yuxian Liu, I. K. Ravichandra Rao, Ronald Rousseau
Empirical series of journal h-indices: The JCR category Horticulture as a
case study 61
Heejung Kim, Jae Yun Lee
Archiving research trends in LIS domain using profiling analysis 77
Yueyang Zhao, Lei Cui, Hua Yang
Evaluating reliability of co-citation clustering analysis
in representing the research history of subject 93
Jesper w. Schneider, Birger Larsen, Peter Ingwersen
A comparative study of first and all-author co-citation counting, and two
different matrix generation approaches applied for author co-citation
analyses 105
Manuel Acosta, Daniel Coronado, Ana Fernández
Exploring the quality of environmental technology
in Europe: evidence from patent citations 133
Ernesto R. Gantman
International differences of productivity in scholarly management knowledge
155
Bhaskar Mukherjee
Scholarly research in LIS open access electronic journals:
A bibliometric study 169
Ergin Elmacioglu, Dongwon Lee
Modeling idiosyncratic properties of collaboration networks revisited 197
Sonia M. R. Vasconcelos, Martha M. Sorenson, Jacqueline Leta
A new input indicator for the assessment of science & technology research?
219
Rolf Ketzler, Klaus F. Zimmermann
Publications: German economic research institutes on track 233
Farzaneh Aminpour, Payam Kabiri, Zahra Otroj, Abbas Ali Keshtkar
Webometric analysis of Iranian universities of medical sciences 255
Gualberto Buela-Casal, Izabela Zych, Ana Medina, María i. Viedma del Jesus,
Susana Lozano, Gloria Torres
Analysis of the influence of the two types of the journal articles;
theoretical and empirical on the impact factor of a journal 267
Xia Gao, Jiancheng Guan
Networks of scientific journals: An exploration of Chinese patent data 267
-------------------------------
TITLE : The citation impact outside references – formal versus informal
citations
AUTHOR: WERNER MARX, MANUEL CARDONA
Max Planck Institute for Solid State Research, Heisenbergstraße 1, D-70569
Stuttgart, Germany
ABSTRACT:
In this study the amount of “informal” citations (i.e. those mentioning
only author names or their initials instead of the complete references) in
comparison to the “formal” (full reference based) citations is analyzed
using some pioneers of chemistry and physics as examples. The data reveal
that the formal citations often measure only a small fraction of the
overall impact of seminal publications. Furthermore, informal citations are
mainly given instead of (and not in addition to) formal citations. As a
major consequence, the overall impact of pioneering articles and
researchers cannot be entirely determined by merely counting the full
reference based citations.
Address for correspondence:
WERNER MARX
E-mail: w.marx at fkf.mpg.de
Scientometrics, Vol. 80, No. 1 (2009) 3–23
DOI: 10.1007/s11192-008-1824-2
-------------------------------
TITLE : Nanobiotechnology as an emerging research domain
from nanotechnology: A bibliometric approach
AUTHOR : YOSHIYUKI TAKEDA, SHIHO MAE, YUYA KAJIKAWA, KATSUMORI MATSUSHIMA
Institute of Engineering Innovation, School of Engineering, University of
Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, Japan
ABSTRACT:
Nanotechnology has been intensively investigated by bibliometric methods
due to its technological importance and expected impacts on economic
activity. However, there is less focus on nanobiotechnology, which is an
emerging research domain in nanotechnology. In this paper, we study the
current status of the former, with our primary focus being to reveal the
structure and research domains in nanobiotechnology. We also examine
country and institutional performance in nanobiotechnology. It emerged that
nanostructures, drug delivery and biomedical applications, bio-imaging, and
carbon nanotubes and biosensors are the major research domains, while the
USA is the leading country, and China has also made substantial
contribution. Most institutions having a major impact in the area of
nanobiotechnology are located in the USA.
Address for correspondence:
YUYA KAJIKAWA
E-mail: kaji at biz-model.t.u-tokyo.ac.jp
Scientometrics, Vol. 80, No. 1 (2009) 25–40
DOI: 10.1007/s11192-007-1897-3
-------------------------------
TITLE : Global stem cell research trend: Bibliometric analysis
as a tool for mapping of trends from 1991 to 2006
AUTHOR: LING-LI LI,a GUOHUA DING,b NAN FENG,c MING-HUANG WANG,c YUH-SHAN
HOc,d
a Department of Emergency, People’s Hospital of Wuhan University, Wuhan
430060, P. R. China
b Department of Nephrology, People’s Hospital of Wuhan University, Wuhan
430060, P. R. China
c Department of Environmental Sciences, College of Environmental Science
and Engineering,
Peking University, Beijing, 100871, P. R. China
d Trend Research Centre, Asia University, Taichung 41354, Taiwan
ABSTRACT:
In this study, we aim to evaluate the global scientific production of stem
cell research for the past 16 years and provide insights into the
characteristics of the stem cell research activities and identify patterns,
tendencies, or regularities that may exist in the papers. Data are based on
the online version of SCI, Web of Science from 1991 to 2006. Articles
referring to stem cell were assessed by many aspects including exponential
fitting the trend of publication outputs during 1991–2006, distribution of
source title, author keyword, and keyword plus analysis. Based on the
exponential fitting the yearly publicans of the last decade, it can also be
calculated that, in 2,011, the number of scientific papers on the topic of
stem-cell will be twice of the number of publications in 2006.
Synthetically analyzing three kinds of keywords, it can be concluded that
application of stem cell transplantation technology to human disease
therapy, especially research related on “embryonic stem cell”
and “mesenchymal stem cell” is the orientation of all the stem cell
research in the 21st century. This new bibliometric method can help
relevant researchers realize the panorama of global stem cell research, and
establish the further research direction.
Address for correspondence:
YUH-SHAN HO
E-mail: ysho at asia.edu.tw
Scientometrics, Vol. 80, No. 1 (2009) 41–60
DOI: 10.1007/s11192-008-1939-5
-------------------------------
TITLE : Empirical series of journal h-indices:
The JCR category Horticulture as a case study
AUTHOR: YUXIAN LIU,a I. K. RAVICHANDRA RAO,b,c RONALD ROUSSEAUc,d
a Catalogue Section, Library of Tongji University, Siping Street 1239,
200092 Shanghai, P.R. China
b Indian Statistical Institute (ISI), 8th Mile, Mysore Road, R.V. College,
P.O. Bangalore, 560059, India
c Universiteit Hasselt, Campus Diepenbeek, Agoralaan, B-3590, Diepenbeek,
Belgium
d KHBO (Association K.U.Leuven), Industrial Sciences and Technology,
Zeedijk 101,B-8400 Oostende, Belgium
ABSTRACT:
Two types of series of h-indices for journals published in the field of
Horticulture during the period 1998–2007 are calculated. Type I h-indices
are based on yearly data, while type II h-indices use cumulative data.
These h-indices are also considered in a form normalised with respect to
the number of published articles. It is observed that type I h-indices,
normalised or not, decrease linearly over a period of ten years. The type
II series, however, is not linear in nature: it exhibits partly a concave
shape. This proves that the journals (in Horticulture) do not exhibit a
linear increase in h-index as argued by Hirsch in the case of life-time
achievements of scientists. In the second part of the paper, an attempt is
made to study the relative visibility of a journal and its change over
time, based on h-indices of journals. It is shown that: – the h-index over
the complete period 1998–2007 of the journal Theoretical & Applied Genetics
(h = 62) is much higher than that of all other journals in the field; – the
relation between the number of publications and the type II h-index for the
whole period is not an exact power law (as it would have to be if the Egghe-
Rousseau model were applicable); – in order to study the dynamic aspects of
journal visibility, a field-relative normalised h-ratio is defined to
monitor systematic changes in the field of Horticulture. Except for two
journals, the Pearson correlation coefficient for yearly values of this
field-relative normalised h-ratio indicates that there is no systematic
change of the performance of the journals with respect to the field as a
whole.
Address for correspondence:
YUXIAN LIU
E-mail: yxliu at lib.tongji.edu.cn
Scientometrics, Vol. 80, No. 1 (2009) 61–76
DOI: 10.1007/s11192-007-2026-z
-------------------------------
TITLE : Archiving research trends in LIS domain using profiling analysis
AUTHOR: HEEJUNG KIM,a JAE YUN LEEb
a Department of Library and Information Science, Yonsei University, Seoul,
120-749, South Korea
b Department of Library and Information Science, Kyonggi University, Suwon,
Gyeonggi-do 443-760, South Korea
ABSTRACT:
This study aims to provide archiving research trends from the perspective
of the field of library and information science using profiling analysis
method. The LISA database has been selected as the representative database
in the library and information science field, and articles have been
searched via the keyword ‘archiv*’. The analysis methods used in this study
were the journal profiling method and the descriptor profiling method. The
descriptor profiling method presents descriptors as a bag of words. That
is, it represents descriptors according to the word sets which are included
in the documents in which those descriptors are assigned. As a result of
journal analysis, six representative journals which are closely related to
archiv* have been identified. The six journals were Archivaria, Advanced
Technology Libraries, Journal of the Society of Archivists, American
Archivist, Archifacts, and Records Management Bulletin. The results of
descriptor analysis show that the most comprehensive and core subject was
digital libraries, and the most comprehensive and core object was the
electronic media. Another result of detailed analysis shows that the
outstanding objects were publications, special collections/sound, cultural
heritage, television, image/photographs, internet/bibliographic data, and
DB/newspapers. On the other hand, outstanding subjects were Archives,
National Libraries, Universities, Libraries and companies.
Address for correspondence:
JAE YUN LEE
E-mail: memexlee at kgu.ac.kr
Scientometrics, Vol. 80, No. 1 (2009) 77–92
DOI: 10.1007/s11192-007-1998-z
-------------------------------
TITLE : Evaluating reliability of co-citation clustering analysis
in representing the research history of subject
AUTHOR: YUEYANG ZHAO,a LEI CUI,b HUA YANGa
a Library of Shengjing Hospital of China Medical University, Shenyang
110004, P.R. China
b Department of Information Management and Information System (Medicine),
China Medical University,
Shenyang 110001, P.R. China
ABSTRACT:
Objective: This paper aimed to examine the reliability of co-citation
clustering analysis in representing the research history of subject by
comparing the results from co-citation clustering analysis with a review
written by authorities. Methods: Firstly, the treatment of traumatic spinal
cord injury was chosen as an investigated subject to be retrieved the
resource articles and their references were downloaded from Science
Citation Index CD-ROM between 1992 and 2002. Then, the highly cited papers
were arranged chronologically and clustered with the method of co-citation
clustering. After mapping the time line visualization, the history and
structure of treatment of spinal cord injury were presented clearly. At
last, the results and the review were compared according the time period,
and then the recall and the precision were calculated. Results: The recall
was 37.5%, and the precision was 54.5%. The research history of traumatic
spinal cord injury treatment analyzed by co-citation clustering was nearly
consistent with authoritative review, although some clusters had shorter
period than which was summarized by professionals. Conclusion: This paper
concluded that co-citation clustering analysis was a useful method in
representing the research history of subject, especially for the
information researchers, who do not have enough professional knowledge. Its
demerit of low recall could be offset by combination this method with other
analytic techniques.
Address for correspondence:
YUEYANG ZHAO
E-mail: zhaoyy at cmu2h.com
Scientometrics, Vol. 80, No. 1 (2009) 93–104
DOI: 10.1007/s11192-008-2056-1
-------------------------------
TITLE : A comparative study of first and all-author co-citation counting,
and two different matrix generation approaches applied for author co-
citation analyses
AUTHOR: JESPER W. SCHNEIDER,a BIRGER LARSEN,b PETER INGWERSENb
a Royal School of Library and Information Science, Aalborg, Denmark
b Royal School of Library and Information Science, Copenhagen, Denmark
ABSTRACT:
Aim: The present article contributes to the current methodological debate
concerning author co-citation analyses. (ACA) The study compares two
different units of analyses, i.e. first- versus inclusive all-author
cocitation counting, as well as two different matrix generation approaches,
i.e. a conventional multivariate and the so-called Drexel approach, in
order to investigate their influence upon mapping results. The aim of the
present study is therefore to provide more methodological awareness and
empirical evidence concerning author co-citation studies. Method: The study
is based on structured XML documents extracted from the IEEE collection.
These data allow the construction of ad-hoc citation indexes, which enables
us to carry out the hitherto largest all-author co-citation study. Four ACA
are made, combining the different units of analyses with the different
matrix generation approaches. The results are evaluated quantitatively by
means of multidimensional scaling, factor analysis, Procrustes and Mantel
statistics. Results: The results show that the inclusion of all cited
authors can provide a better fit of data in two-dimensional mappings based
on MDS, and that inclusive all-author co-citation counting may lead to
stronger groupings in the maps. Further, the two matrix generation
approaches produce maps that have some resemblances, but also many
differences at the more detailed levels. The Drexel approach produces
results that have noticeably lower stress values and are more concentrated
into groupings. Finally, the study also demonstrates the importance of
sparse matrices and their potential problems in connection with factor
analysis. Conclusion: We can confirm that inclusive all-ACA produce more
coherent groupings of authors, whereas the present study cannot clearly
confirm previous findings that first-ACA identifies more specialties,
though some vague indication is given. Most crucially, strong evidence is
given to the determining effect that matrix generation approaches have on
the mapping of author co-citation data and thus the interpretation of such
maps. Evidence is provided for the seemingly advantages of the Drexel
approach.
Address for correspondence:
JESPER W. SCHNEIDER
E-mail: jws at db.dk
Scientometrics, Vol. 80, No. 1 (2009) 105–132
DOI: 10.1007/s11192-007-2019-y
-------------------------------
TITLE : Exploring the quality of environmental technology
in Europe: evidence from patent citations
AUTHOR: MANUEL ACOSTA, DANIEL CORONADO, ANA FERNÁNDEZ
Facultad de Ciencias Económicas y Empresariales, Universidad de Cádiz, c/
Duque de Nájera, 8, 11002-Cadiz, Spain
ABSTRACT:
In this paper we carry out an empirical analysis to address some questions
concerning the production and quality of technology in environmental
sectors. The methodology involves patents as a measure of the generation of
new knowledge, and patent citations as a proxy for the quality of a
technological invention. The sample contains more than 12,000 environmental
European patents from firms and government institutions from 1998 to 2004.
>From our econometric analysis, we found that environmental patents applied
by individual inventors present on average less quality that those applied
by institutional inventors. The size of family patent is relevant to
explain forward patent citation. Furthermore, patents coming from abroad
(out of Europe), in particular with US and Japan priority, are more cited
on average than local patents (with European priority). Lastly, the
specialization in environmental fields of a patent plays a negative role in
determining the frequency of forward citation.
Address for correspondence:
MANUEL ACOSTA
E-mail: manuel.acosta at uca.es
Scientometrics, Vol. 80, No. 1 (2009) 133–154
DOI: 10.1007/s11192-008-2057-0
-------------------------------
TITLE : International differences of productivity
in scholarly management knowledge
AUTHOR: ERNESTO R. GANTMAN
Escuela de Economía y Negocios Internacionales, Universidad de Belgrano, M.
T. de Alvear 1560, (1060) Buenos Aires, Argentina
ABSTRACT:
Using a dataset of refereed conference papers, this work explores the
determinants of academic production in the field of management. The
estimation of a count data model shows that the countries’ level of
economic development and their economy size have a positive and highly
significant effect on scholarly management knowledge production. The
linguistic variable (English as official language), which has been cited by
the literature as an important factor facilitating the participation in the
international scientific arena, has also a positive and statistically
significant effect.
Address for correspondence:
ERNESTO R. GANTMAN
E-mail: egantman at ub.edu.ar
Scientometrics, Vol. 80, No. 1 (2009) 155–167
DOI: 10.1007/s11192-007-2054-8
-------------------------------
TITLE : Scholarly research in LIS open access electronic journals:
A bibliometric study
AUTHOR: BHASKAR MUKHERJEE
ABSTRACT:
Department of Library and Information Science, Banaras Hindu University,
Varanasi, Uttar Pradesh, India Using 17 fully open access electronic
journals published uninterruptedly during 2000–2004 in the field of Library
and Information Science the present study investigated the trend of LIS
Open Access e-journals’ literature by analysing articles, authors,
institutions, countries, subjects, & references. Quantitative content
analysis was carried out on the data, data were analysed in order to
project literature growth, authorship pattern, gender pattern, cited
references pattern and related bibliometric phenomena. The analysis
indicates that there were as many as 1636 articles published during 2000–
2004 with an average increment of 23.75 articles per year. The authorship
pattern indicates that team research has not been very common in LIS OA
publishing and male authors were keener than female authors. Authors from
academic institutions were paid more interest in OA publishing and most of
them were from developed nations. The subject coverage of these OA e-
journals was very vast and almost all facets of information and library
science were covered in these articles. There were 90.10% of articles of
these e-journals contained references and on an average an article
contained 24 references. Of these, 38.53% of references were hyperlinked
and 87.35% of hyperlinked references were live during investigation. The
analysis of data clearly indicates that OA e-journals in LIS are rapidly
establishing themselves as a most viable media for scholarly communication.
Address for correspondence:
BHASKAR MUKHERJEE
E-mail: mukherjee.bhaskar at gmail.com
Scientometrics, Vol. 80, No. 1 (2009) 169–196
DOI: 10.1007/s11192-008-2055-2
-------------------------------
TITLE : Modeling idiosyncratic properties of collaboration networks
revisited
AUTHOR: ERGIN ELMACIOGLU,a DONGWON LEEb
a Yahoo! Inc., Sunnyvale, CA 94089, USA
b College of Information Sciences and Technology, The Pennsylvania State
University, PA 16802, USA
ABSTRACT:
A study on the network characteristics of two collaboration networks
constructed from the ACM and DBLP digital libraries is presented. Different
types of generic network models and several examples are reviewed and
experimented on re-generating the collaboration networks. The results
reveal that while these models can generate the power-law degree
distribution sufficiently well, they are not able to capture the other two
important dynamic metrics: average distance and clustering coefficient.
While all current models result in small average distances, none shows the
same tendency as the real networks do. Furthermore all models seem blind to
generating large clustering coefficients. To remedy these shortcomings, we
propose a new model with promising results. We get closer values for the
dynamic measures while having the degree distribution still power-law by
having link addition probabilities change over time, and link attachment
happen within local neighborhood only or globally, as seen in the two
collaboration networks.
Address for correspondence:
ERGIN ELMACIOGLU
E-mail: elmacioglu at acm.org
Scientometrics, Vol. 80, No. 1 (2009) 197–218
DOI: 10.1007/s11192-007-2047-7
-------------------------------
TITLE : A new input indicator for the assessment of science & technology
research?
AUTHOR : SONIA M. R. VASCONCELOS, MARTHA M. SORENSON, JACQUELINE LETA
Science Education Program/Medical Biochemistry Institute/Federal University
of Rio de Janeiro (UFRJ),
Av. Carlos Chagas Filho, 373, Centro de Ciências da Saúde, Bloco B, Sala B
039, Ilha do Fundão, Rio de
Janeiro, CEP 21941-902, Brazil
ABSTRACT:
Traditional input indicators of research performance, such as research
funding, number of active scientists, and international collaborations,
have been widely used to assess countries’ publication output. However,
while publication in today’s English-only research world requires sound
research in readable English, English proficiency may be a problem for the
productivity of non-native English-speaking (NNES) countries. Data provided
by the Brazilian National Research Council (CNPq) containing the academic
profile of 51,223 Brazilian researchers show a correlation between English
proficiency and publication output. According to our results, traditional
input indicators may fall short of providing an accurate representation of
the research performance of NNES developing countries.
Address for correspondence:
JACQUELINE LETA
E-mail: jleta at bioqmed.ufrj.br
Scientometrics, Vol. 80, No. 1 (2009) 219–232
DOI: 10.1007/s11192-008-2082-z
-------------------------------
TITLE : Publications: German economic research institutes on track
AUTHOR: ROLF KETZLER,a KLAUS F. ZIMMERMANNb
a DIW Berlin, Berlin, Germany
b DIW Berlin, IZA, University of Bonn, Mohrenstr. 58, D-10117 Berlin,
Germany
ABSTRACT:
About a decade ago the German Science Council requested a strengthening of
academic research at the German economic research institutes to improve the
academic foundation of policy advice – the traditional task of the
institutes. Based on publications in SSCI journals, research output has
since then improved remarkably in scope and quality and has involved an
ever rising number of scholars within the institutes. It can be considered
to be a substantial success, which should be internationally recognized.
The present study demonstrates that for a wide range of different methods
the rankings of publication performance is fairly robust. The results are
distorted, however, if they are based on a highly selective list of
journals as was the case in previous literature.
Address for correspondence:
KLAUS F. ZIMMERMANN
E-mail: KZimmermann at diw.de
Scientometrics, Vol. 80, No. 1 (2009) 233–254
DOI: 10.1007/s11192-008-2062-3
-------------------------------
TITLE : Webometric analysis of Iranian universities of medical sciences
AUTHOR: FARZANEH AMINPOUR,a,b,c PAYAM KABIRI,a,d ZAHRA OTROJ,e ABBAS ALI
KESHTKARf,g
a Scientometry Department, Isfahan University of Medical Sciences, Isfahan,
Iran
b Medical Education Research Center, Isfahan University of Medical
Sciences, Isfahan, Iran
c Faculty of Management and Medical Information Science, Iran University of
Medical Sciences, Tehran, Iran
d Tehran University of Medical Sciences, Tehran, Iran
e Isfahan University of Medical Sciences, Isfahan, Iran
f Department of Preventive and Social Medicine, School of Medicine,
Golestan University of Medical Sciences, Gorgan, Iran
g Golestan Research Center of Gastroenterology and Hepatology, Golestan
University of Medical Sciences, Gorgan, Iran
ABSTRACT:
Introduction: There are many researches have been conducted on webometrics,
especially the impacts of websites on each other and the web impact factor.
However, there are few studies focusing on the websites of Iranian
universities. This study analyzed the websites of Iranian universities of
medical sciences according to the webometric indicators. Method and
materials: In a cross-sectional study, the number of web pages, inlinks,
external inlinks and also the overall and absolute web impact factors for
Iranian universities of medical sciences with active exclusive websites
were calculated and compared using AltaVista search engine. Finally, the
websites were ranked based on these webometric indicators. Results: The
results showed that the website of Tehran university of medical sciences
with 49,300 web pages and 9860 inlinks was ranked first for the size and
number of inlinks, while its impact factor was ranked 38th. Rafsanjan UMS
with 15 web pages and 211 links had the highest rank for the web impact
factor among Iranian universities of medical sciences. Discussions and
conclusions: The study revealed that Iranian universities of medical
sciences did not have much impact on the web and were not well known
internationally. The major reason relies on linguistic barriers. Some of
them also suffer from technical problems in their web design.
Address for correspondence:
FARZANEH AMINPOUR
E-mail: f.aminpour at gmail.com
Scientometrics, Vol. 80, No. 1 (2009) 255–266
DOI: 10.1007/s11192-008-2059-y
-------------------------------
TITLE : Analysis of the influence of the two types of the journal
articles; theoretical and empirical on the impact factor of a journal
AUTHOR: GUALBERTO BUELA-CASAL, IZABELA ZYCH, ANA MEDINA, MARÍA I. VIEDMA
DEL JESUS, SUSANA LOZANO, GLORIA TORRES
Universidad de Granada, Granada, Spain
ABSTRACT:
The study discusses the necessity to analyze the influence of theoretical
and empirical types of journal articles on the citation impact of Spanish
psychology journals. Three of the most representative Spanish psychology
journals were selected for the purposes of this study: Papeles del
Psicólogo, Análisis y Modificación de Conducta and Psicothema. Twenty-three
psychology journals in Spanish were used as source journals. Altogether,
there were sixty-seven issues reviewed for the references and ninety-three
issues for the articles. The bibliometricanalysis was conducted by six
highly trained psychologists. The results demonstrated differences
regarding the percentages of empirical and theoretical articles published
in the three examined journals and the number of citations received by them
based on the article type. When normalizing the results according to the
number of theoretical and empirical articles that were published, it
becomes evident that the theoretical articles receive on average twice as
many references as the empirical ones. We discuss the importance of this
effect on the comparison of journals based on their citation impact and
show the evidence that it is only valid to compare journals which publish a
similar percentage of theoretical and empirical articles.
Address for correspondence:
GUALBERTO BUELA-CASAL
E-mail: gbuela at ugr.es
Scientometrics, Vol. 80, No. 1 (2009) 267–284
DOI: 10.1007/s11192-008-1715-6
-------------------------------
TITLE : Networks of scientific journals: An exploration of Chinese patent
data
AUTHOR : XIA GAO,a JIANCHENG GUANb
a School of Management, Beijing University of Aeronautics and Astronautics,
Beijing, P.R. China
b School of Management, Fudan University, 200433 Shanghai, P.R. China
ABSTRACT:
We apply social network analysis to display the characteristics of the
networks resulting from bibliographic coupling of journals by the Chinese
patent data of United States Patent and Trademark Office (USPTO) between
1995 and 2002. The networks of journals in all fields, the three strongly
science-based fields (i.e. Biotechnology, Pharmaceuticals, and Organic Fine
Chemistry), and the three weakly science-based fields (i.e. Optics,
Telecommunications, and Consumer Electronics), have been analyzed from the
global and the ego views, respectively. We study a variety of statistical
properties of our networks, including number of actors, number of edges,
size of the giant component, density, mean degree, clustering coefficient
and the centralization measures of the network. We also highlight some
apparent differences in the network structure between the subjects studied.
Besides, we use the three centrality measures, i.e. degree, closeness, and
betweenness, to identify the important journals in the network of all
fields and those strongly science-based networks.
Address for correspondence:
JIANCHENG GUAN
E-mail: guanjianch at fudan.edu.cn, guanjianch at buaa.edu.cn, guanjianch at 126.com
Scientometrics, Vol. 80, No. 1 (2009) 285–304
DOI: 10.1007/s11192-007-2013-4
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