1,720,987 research outputs found
Genomics for the environment: the hidden power of bacteria
No full textPlants harbor a plethora of microorganisms with which they mutually interact, so to be considered as ‘super-organisms’. Plants are able to shape their associated microbiome and to recruit microbes useful for nutrition, growth and defense from pathogens and adverse environmental conditions. The genomics of plant associated microorganisms is then an emerging field with highly important outcomes for agriculture and, in general, for green biotechnologies. In the last years, an increasing number of genomes from plant-associated microorganisms have been sequenced, discovering an extraordinary number of genes potentially useful for biotechnology applications. This presentation will review some of
the relevant application of plant associated bacterial genomics and will focus on the exploration of the genome of the plant symbiont Sinorhizobium meliloti for genes relevant for the adaptation to heavy metal polluted soil. Heavy-metal tolerance in bacteria is indeed a widespread phenotype; in particular nickel tolerance has been characterized as depending on the nre system, which employs a Ni/H+ antiporter (NreB) to pump nickel out from the cell. An orthologous
of nreB gene was found in Sinorhizobium meliloti by genome scanning. The evolutionary origin of this gene and its functions have been extensively studied and a perspective for its potential biotechnology applications will be reviewed
Beyond Ethnic Intolerance: Traces and Benefits of Ethnic Diversity in Post-War Bosnia-Herzegovina
No full textIn the first section, the main socio-psychological theories on group interaction are
briefly discussed. In the following sections, TRACES data regarding Bosnia-
Herzegovina are presented and discussed. Particular attention is given to ethnic
heterogeneity and its positive or negative effects on intergroup attitudes. Finally, based
on our findings, we present several considerations concerning the promotion of
tolerance and the reconstruction of multi-cultural communities in Bosnia-Herzegovina
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Servire Cristo e i poveri dall'altra parte del mondo. Don Renzo Rossi e altri missionari toscani nel Brasile del secondo Novecento
No full textIl contributo presenta un'analisi di fatti e profili di persone, in particolare don Renzo Rossi e padre Antonio Lupi, che cooperarono nella testimonianza missionaria in Brasile nel secondo Novecento.The paper presents an analysis of events and people, especially rev. Renzo Rossi and f. Antonio Lupi, who cooperated during their missionary activity in Brasil thoughout the second half of the 20th century
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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