links for 2010-06-07

  • Bibliographic metadata plays a key role in scientific litera- ture, not only to summarise and establish the facts of the publication record, but also to track citations between pub- lications and hence to establish the impact of individual ar- ticles within the literature. Commercial secondary publish- ers have typically taken on the role of rekeying, mining and analysing this huge corpus of linked data, but as the primary literature has moved to the world of the digital repository, this task is now undertaken by new services such as Citeseer, Citebase or Google Scholar. As institutional and subject- based repositories proliferate and Open Access mandates increase, more of the literature will become openly avail- able in well managed data islands containing a much greater amount of detailed bibliometric metadata in formats such as RDF. Through the use of efficient extraction and inference techniques, complex relations between data items can be es- tablished. In this paper we explain
  • The question of citation behavior has always intrigued scientists from various disciplines. While general citation patterns have been widely studied in the literature we develop the notion of citation projection graphs by investigating the citations among the publi- cations that a given paper cites. We investigate how patterns of citations vary between various scientific disciplines and how such patterns reflect the scientific impact of the paper. We find that id- iosyncratic citation patterns are characteristic for low impact pa- pers; while narrow, discipline-focused citation patterns are com- mon for medium impact papers. Our results show that crossing- community, or bridging citation patters are high risk and high re- ward since such patterns are characteristic for both low and high impact papers. Last, we observe that recently citation networks are trending toward more bridging and interdisciplinary forms.

links for 2010-06-03

  • “La universidad es un gran espejo en el que se reflejan los requerimientos y posibilidades de la sociedad”
    “Absolutamente nada de lo relativo a la cultura puede resultarle indiferente a la universidad”
    “La universidad es como un caleidoscopio que lleva a imaginar un mundo que queremos que sea cambiante”
    “No somos la suma de facultades, sino que en la universidad todo está integrado”
    “Esta universidad no es una quimera, todas las universidades aquí representadas son semilleros de conocimiento…”
    “Si los jóvenes no contaran con la universidad, serían como un cuerpo sin cerebro”
    “En nuestros países hay investigadores de primer nivel. Esto debería motivar a los gobiernos a apoyar la educación”
    “Nuestra Universidad ya es sólo investigar o educar, es atender a la problemática global”
    “Hay que atender a lo acuciante en lo económico, en lo ecológico, en lo social “
    “El título de ‘Universidad’ sólo puede otorgarse a quienes lo merezcan por su calidad en docencia e investigación”
  • ENTREVISTA: JOSÉ NARRO Rector de la Universidad Nacional Autónoma de México
    "Dentro de una década tendremos un Erasmus iberoamericano"

links for 2010-06-01

  • Introduction
    Meta-analysis is a statistical technique for amalgamating, summarising, and reviewing previous quantitative research. By using meta-analysis, a wide variety of questions can be investigated, as long as a reasonable body of primary research studies exist. Selected parts of the reported results of primary studies are entered into a database, and this "meta-data" is "meta-analyzed", in similar ways to working with other data – descriptively and then inferentially to test certain hypotheses.
    Meta analysis can be used as a guide to answer the question 'does what we are doing make a difference to X?', even if 'X' has been measured using different instruments across a range of different people. Meta-analysis provides a systematic overview of quantitative research which has examined a particular question.
    The appeal of meta analysis is that it in effect combines all the research on one topic into one large study with many participants. The danger is that in …