The ranking, headed by the UGR, presents data for countries and journals and can be filtered according to large knowledge areas (27), thematic categories (295), country/journal and years (since 1996 to 2006). An additional combination permits to arrange the ranking according to different indicators: SJR, citations per document, h-index, journals titles, documents, quotable documents and total of citations; with the possibility of establishing a minimum level for all of them. SJR is based on the ‘Page Rank’ algorithm to weight citations according to those received by the citing publication.
The SCImago Group has published the new “SCImago journal & Country rank: A new site, two new rankings” in the November - December issue 2007 (vol16, n. 6) of the journal "The Information Professional", as well as the open access article, which can be gratuitously downloaded in pdf and html on: http://elprofesionaldelainformacion.metapress.com
Researchers and academic and institutional authorities must support this initiative now with specific facts. For further suggestions or comments, those interested should get in touch with the authors by e-mail: firstname.lastname@example.org
SCImago Research Group
The SCImago Group, directed by Professor Félix de Moya Anegón (University of Granada), is composed of researchers of the universities Carlos III and Alcalá of Madrid, of Extremadura and of Granada. They have worked on the use of scientometric indicators as tools that permit to place a country, an institution, a thematic area or a researcher in the world context of scientific production. They have carried out the project “Science Atlas”, in which the Group has focused its work since 1998.
Thomson Scientific ISI
The Institute for Scientific Information -ISI offers the scientific community a citation database including thousands of journals -the Science Citation Index (SCI). The database offers the possibility of identifying the most frequently cited articles, as well as the source of the citation. The ISI allows to know, in addition, the impact of each indexed scientific journal and, therefore, their valuation among the scientific community.
All over the world, the bibliometric indicators of the ISI have been used to analyse the scientific production and to direct decision taking in scientific and technological public policies.
Antonio Marín Ruiz | alfa
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The operational speed of semiconductors in various electronic and optoelectronic devices is limited to several gigahertz (a billion oscillations per second). This constrains the upper limit of the operational speed of computing. Now researchers from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg, Germany, and the Indian Institute of Technology in Bombay have explained how these processes can be sped up through the use of light waves and defected solid materials.
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Most natural and artificial surfaces are rough: metals and even glasses that appear smooth to the naked eye can look like jagged mountain ranges under the microscope. There is currently no uniform theory about the origin of this roughness despite it being observed on all scales, from the atomic to the tectonic. Scientists suspect that the rough surface is formed by irreversible plastic deformation that occurs in many processes of mechanical machining of components such as milling.
Prof. Dr. Lars Pastewka from the Simulation group at the Department of Microsystems Engineering at the University of Freiburg and his team have simulated such...
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Researchers at Chalmers University of Technology, Sweden, recently completed a 5-year research project looking at how to make fibre optic communications systems more energy efficient. Among their proposals are smart, error-correcting data chip circuits, which they refined to be 10 times less energy consumptive. The project has yielded several scientific articles, in publications including Nature Communications.
Streaming films and music, scrolling through social media, and using cloud-based storage services are everyday activities now.
After helping develop a new approach for organic synthesis -- carbon-hydrogen functionalization -- scientists at Emory University are now showing how this approach may apply to drug discovery. Nature Catalysis published their most recent work -- a streamlined process for making a three-dimensional scaffold of keen interest to the pharmaceutical industry.
"Our tools open up whole new chemical space for potential drug targets," says Huw Davies, Emory professor of organic chemistry and senior author of the paper.
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