Authors:N. Narvaez-Berthelemot, L. Frigoletto and J. Miquel
This study attempts to analyse the usability of international databases such as the Science Citation Index (SCI) for the observation of the international collaboration in lesser-developed countries. We have examined the adequacy of this data source (the SCI) in perceiving the international scientific activities of nine Latin American countries. We have studied the relationships of these countries with their main foreign partners in the large fields of science. It has been observed that some of these relationships are not covered by the data source under study. The creation of an information system storing complementary data suited for the identification of existing internatinal collaborative projects is recommended. In the longrange future such a system would provide more appropriate information for the analyses of international collaboration.
In this paper we introduce a novel block cipher based on the composition of abstract finite automata and Latin cubes. For information encryption and decryption the apparatus uses the same secret keys, which consist of key-automata based on composition of abstract finite automata such that the transition matrices of the component automata form Latin cubes. The aim of the paper is to show the essence of our algorithms not only for specialists working in compositions of abstract automata but also for all researchers interested in cryptosystems. Therefore, automata theoretical background of our results is not emphasized. The introduced cryptosystem is important also from a theoretical point of view, because it is the first fully functioning block cipher based on automata network.
Authors:Isabel Gómez, Rosa Sancho, Luz Moreno and María Fernández
The coverage of Latin American journals by international databases influences the visibility of these countries' scientific
output, and has a direct effect in their activity index per scientific discipline. Local, regional and international character
of the most visible Latin American journals in SCI expanded and restricted databases is analysed, as well as its influence
in the percentage share of each country in certain disciplines. Suggestions to enhance visibility of local journals are presented.
An analysis was made using databases at the Institute for Scientific Information (ISI) in Philadelphia concerning the productivity
in the field of engineering sciences in Chile, a developing country with a neoliberal economy which has mainstream articles
related to the Latin American context. This paper also mentions policies and actions to be adopted in order to strengthen
R&D activities to attain a higher scientific and technological progress.
Scientific output in the Caribbean and Latin American countries was studied examining the publications indexed by the Institute for Scientific Information which conform the mainstream literature. The growth patterns of first-authors-publishing-scientific-papers coming from the five most productive countries of the region were determined. In addition, the scientific publications from each country of the region, as indexed in 1981, were classified per field. It was found that most of the research was done in the life sciences area. However, the small scientific output observed in all fields appears insufficient to assure a positive role of science for the best overall development of each individual society. This situation may reflect a lack of support for the progress of science in these countries and therefore political commitment towards this purpose is considered to be of particular importance.
In Latin America, interactive science centres and museums are key institutions for science communication. In order to map
their relationship over the Internet, a Web co-link analysis was applied to 18 websites of science centres and museums affiliated
to the Network for the Popularization of Science and Technology in Latin America and the Caribbean - RedPOP. Clustering analysis,
multidimensional scaling (MDS) and an analysis of all pages with links to at least two websites were performed. Results showed
that language barriers played a prominent role in clustering, with external recognition by the target public representing
a secondary issue.
Authors:G. Lewison, A. Fawcett-Jones and C. Kessler
Results are presented of a study covering 1986–91 of the scientific output of Latin American nations. The distribution of the output within the countries is shown: in most countries there is a high concentration in the national capital. The papers co-authored with scientists from other countries are also examined. There has been a notable rise in both the number and proportion of papers co-authored within the region, with the USA and Canada, and, especially, with the countries of the European Community, where a programme of International Scientific Co-operation, to promote just such links, has been active since the mid-1980s in many Latin American countries.
Authors:M. Fernández, A. Agis, A. Martín, A. Cabrero and I. Gómez
Research projects in cooperation between Spanish National Research Council and Latin-American Organizations, that have been developed in the last eight years, were studied. Around forty Spanish research institutes have cooperated with Latin-American ones, mostly with Cuba, Chile, Brazil and Mexico. The interpretation of the collaboration rates with the different countries is discussed. Duration of the projects, number of researchers and research output were examined. The cooperation results were quantified through articles, presentations to congresses, reports, monographs, patents and thesis. Diffusion, languages and impact of the journals used for publication were studied. Non quantifiable outputs were also examined.
The present study compares the international publication productivityof Latin American countries in the fields of business
administration and economicsfrom 1995 to 1999. Only four countries – Argentina, Brazil, Chile, andMexico – have a substantial
research production in these areas. Amongthese countries, Chile showed the most favorable results according to variousindicators
of publication productivity.