1,721,134 research outputs found
Oligomerization of a rhamnanic trisaccharide repeating unit of O-chain polysaccharides from phytopathogenic bacteria
No full textAn efficient synthesis of a protected trisaccharide building block α-L-Rha(1→3)-α-L-Rha(1→2)-α-L-Rha related to the structure of many lipopolysaccharide O-chains from phytopathogenic bacteria has been developed. The protecting group pattern consisting of benzoyl, benzyl and chloroacetyl groups facilitated the use of the trisaccharide building block in the synthesis of two higher oligomers, an oligorhamnosyl hexasaccharide and a nonasaccharide
The Resilience of Clusters in the Context of Increasing Globalization: The Basque Wind Energy Value Chain
No full textIn this paper, we study how globalization impacts on the structure and governance
patterns of value chains and on the resilience of local clusters. We study the value chains
related to two Basque (Spain) companies in the wind energy industry, Iberdrola and Gamesa,
and the local cluster to which they belong. We find that firms within the cluster have different
types of relationships with lead companies depending on their competences and the complexity
of their products. As a consequence, firms also present different potential for growth and/or
resilience: some have the capacity to internationalize their operations and/or shift to the
offshore wind market, others are vulnerable to competition from providers in the emerging
countries. Against this context, we discuss how the cluster responds to these challenges and the
role of policy
Alta Tencologia, producitividad y redes
No full textAnalysis of recent developments in the economic analysis of SME system
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
Ammonium hydroxide hydrolysis: a valuable support in the MALDI-TOF mass spectrometry analysis of Lipid A fatty acid distribution.
No full textVariations 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
Reazioni di Pictet-Spengler della dopammina con prodotti del metabolismo dei carboidrati in condizioni biomimetiche: identificazione di derivati 6,7-diidrossitetraidroisochinolinici ed interazioni con cationi metallici di transizione
No full textReazioni di Pictet-Spengler della dopammina con prodotti del metabolismo dei carboidrati in condizioni biomimetiche: identificazione di derivati 6,7-diidrossitetraidroisochinolinici ed interazioni con cationi metallici di transizione
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