The performance of Brazilian male and female scientists in three scientific fields was assessed through their publications
in the Science Citation Index from 1997-2001. Information on their sex and their ages, positions, and fellowship status was
obtained from a census on all Brazilian scientists. The results showed that women participated most in immunology, moderately
in oceanography and least in astronomy. Men and women published similar numbers of papers, and they were also of similar potential
impact; they were also equally likely to collaborate internationally. Nevertheless, women were less likely than men to receive
fellowships to supplement their salaries, suggesting that some sexual discrimination may still be occurring in the Brazilian
The number of Brazilian publications in the Institute for Scientific Information database, ISI, increased significantly in
the last 20 years, comprising more than 1 percent of the database in the last two years. The relationship between size and
recognition of Brazilian science, estimated by number of ISI-indexed publications, p, and citations, c, obeyed a power law,
c = k pn. The value of n, a known indicator of such relationship was 1.42 0.04, significantly higher than that found for the whole
set of ISI-indexed world publications. The recent growth of Brazilian publication was not solely due to international collaboration,
since over the last six years international collaboration, estimated as the percentage of Brazilian publications having at
least one foreign address, reached a constant value of ca. 30%. International collaboration increased the impact of Brazilian
publications. Although the most frequent collaborating countries are those that produce the largest percentage of world"s
science, Brazilian collaboration with Argentina and Chile exhibit impacts comparable to the major science producers.
The Brazilian contribution to publications in science and humanities increased from 0.29% of the worldwide total in 1981 to 0.46% in 1993. In science, but not in humanities, Brazilian publications tend to follow the world publication trend; thus, during the period 1981–1993, 57.9% of Brazilian publications were in life sciences, 35.4% in exact sciences, 3.9% in earth sciences and 2.9% in humanities. The ten institutions with the largest number of publications are universities, which account for half of the all Brazilian publications. The total number of authors on the Brazilian 1981–1993 publications was 52,808. Among these 57.8% appear in only one publication and 17.5% have their publications cited more than 10 times.
Authors:Sonia Vasconcelos, Martha Sorenson, and Jacqueline Leta
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.
Authors:Pamela Lang, Fábio Gouveia, and Jacqueline Leta
The method of co-link was proposed in 1996 and since then it has been applied in many Webometric studies. Its definition refers
to “page co-link analysis”, as links are provided by URLs or pages. This paper presents a new methodological approach, a “site
co-link analysis”, to investigate relations in small networks. The Oswaldo Cruz Foundation institutes were used as a case
study. The results indicate that the number of co-links provided by sites led to an increase of 133% in the sample analyzed.
In a cluster analysis, three clusters were formed mainly for thematic reasons and four institutes remained isolated.
Authors:Wolfgang Glänzel, Jacqueline Leta, and Bart Thijs
In the present paper, the evolution of publication activity and citation impact in Brazil is studied for the period 1991-2003.
Besides the analysis of trends in publication and citation patterns and of national publication profiles, an attempt is made
to find statistical evidences of the relation between international co-authorship and both research profile and citation impact
in the Latin American region. Despite similarities and strong co-publication links with the other countries in the region,
Brazil has nonetheless a specific research profile, and forms the largest potential in the region.
Authors:Jacqueline Leta, Denise Lannes, and L. De Meis
The number of Brazilian scientific publications increased from 0.29% to 0.56% of the worldwide total during the 1981–1993
period. There was a decrease of the funds allocated to most scientific activities, except for that allocated for training
of new scientists. The numbers of research fellowships and scientific publications increased at the same ratio during the
period. The pattern of scientific publications and the number of fellowship granted along the years in the different fields
of research were analyzed. The data presented indicate that even in a period of economic crisis, a selective investment of
funds in human resources may lead to an increase of the scientific productivity of a country in all science fields.
Authors:Jacqueline Leta, Wolfgang Glänzel, and Bart Thijs
In the present study a bibliometric meso-level analysis of Brazilian scientific research is conducted. Both sectoral and publication
profile of Brazilian universities and research institutions are studied. Publication dynamics and changing profiles allow
to the conclusion that powerful growth of science in Brazil goes with striking structural changes. By contrast, citation-based
indicators reflect less spectacular developments.
Authors:Paula Leite, Rogério Mugnaini, and Jacqueline Leta
Brazilian science has increased fast during the last decades. An example is the increasing in the country's share in the world's scientific publication within the main international databases. But what is the actual weight of international publications to the whole Brazilian productivity? In order to respond this question, we have elaborated a new indicator, the International Publication Ratio (IPR). The data source was Lattes Database, a database organized by one of the main Brazilian S&T funding agency, which encompasses publication data from 1997 to 2004 of about 51,000 Brazilian researchers. Influences of distinct parameters, such as sectors, fields, career age and gender, are analyzed. We hope the data presented may help S&T managers and other S&T interests to better understand the complexity under the concept scientific productivity, especially in peripheral countries in science, such as Brazil.