1,721,130 research outputs found
Gian Battista Dalla Porta / G. Bossi dis p Bettoni Becceni inc. G. Longhi dir.
No full textAppartient à l’ensemble documentaire : IconMUS1Appartient à l’ensemble documentaire : IconMUSNumAppartient à l’ensemble documentaire : IconMUS
Living in the Europe of the future: a Home for Man in the Media Jungle
No full textThe future of living in Europe can be interpreted through the synergy between human resources dynamics, artifacts quality and city structure.
During the last decade we moved rapidly from the society representation based on Colin Clark1 activities partition - primary, secondary, tertiary economic sectors - evoking stability of employment, of living, of community relationships and wellfare, to the need to represent a growing population, characterized by great diversity in terms of affinities and capabilities. A set of elements leading to represent the population into three groups2: the many, the new and the connected, are presente
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
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Enantiomer discrimination in absorption spectroscopy and in voltammetry: highlighting fascinating similarities and connections
No full textEnantiomer discrimination
in absorption spectroscopy and in voltammetry:
highlighting fascinating
similarities and connections
Patrizia Romana Mussini1, Serena Arnaboldi1, Mirko Magni1,2, Sara Grecchi1 ,
Giovanna Longhi3, Tiziana Benincori4
1 Università degli Studi di Milano, Dipartimento di Chimica
2 present address: Università degli Studi di Milano, Dipartimento di Scienze e Politiche Ambientali;
3Università degli Studi di Brescia, Dipartimento di Medicina Molecolare e Translazionale
4Università degli Studi dell’Insubria, Dipartimento di Scienza e Alta Tecnologia
е-mail: [email protected]
Electronic absorption spectroscopy, involving intramolecular electron transitions triggered by light, and voltammetry, involving electrode-to/from-molecule electron transfers triggered by the electrode potential, have well known analogies and connections, and are usually exploited in synergy for the investigation of electronic properties of advanced molecules and materials.
In our recent investigations of “inherently chiral” electroactive molecules of axial stereogenicity to be exploited as chiral selectors in electroanalysis and electrochemistry, we realized that, fascinatingly, the two techniques also share many connections and analogies at a superior complexity level, when adding chirality to the involved actors, i.e. considering chiral molecules interacting with the left-handed and right-handed helicoidal components of polarized light (in circular dichroism CD spectroscopy) as well as chiral molecules undergoing electron transfer at a chiral electrode surface (in enantioselective voltammetry). [1]
In particular, the following points are indeed worthy of interest:
(i) High performance achieved with inherently chiral molecules: “inherently chiral” molecules of helical or axial stereogenicity usually result in high enantiodiscrimination performances both in chiroptical spectroscopy, in terms of neat differences in absorption of the above left-handed and right-handed polarized light components [2,3] and in enantioselective voltammetry, in terms of neat differences in the electron transfer potentials for (R)- or (S)-molecular probes [4];
(ii) Loss of energy level degeneration for interacting chromophores/redox sites: chiral electroactive molecules of axial stereogenicity, consisting of two equal moieties, behave as equivalent, reciprocally interacting chromophores in CD, and as equivalent, reciprocally interacting redox centres in CV, in both cases resulting in loss of degeneration of energy levels. This implies an absorption wavelength difference with “Davydov splitting” in the CD pattern [3] as well as a twin peak system in the CV pattern [5,6];
(iii) Pseudochiral manifestations with achiral molecular probes + magnetic fields: CD spectra can also be obtained from polarized light absorption by achiral molecules in a magnetic field, and peak potential differences have been observed on chiral electrode surfaces for achiral molecules in a magnetic field [7]; both phenomena are modulated by the magnetic field intensity and orientation.
[1] P.R. Mussini, S. Arnaboldi, M. Magni, S. Grecchi, G. Longhi, T. Benincori, Curr. Opin. Electrochem. 37 (2023) 101128.
[2] N. Berova, L. Di Bari, G. Pescitelli, Chem. Soc. Rev. 36 (2007) 914-931.
[3] J. T. Vázquez, Tetrahedron: Asymmetry, 28 (2017) 1199-1211.
[4] S. Arnaboldi, M. Magni, P. R. Mussini, Curr. Opin. Electrochem. 8 (2018) 60-72.
[5] F. Sannicolò, S. Arnaboldi, T. Benincori, V. Bonometti, R. Cirilli, L. Dunsch, W. Kutner, G. Longhi, P. R. Mussini, M. Panigati, M. Pierini, S. Rizzo, Angew. Chem. Int. Ed., 53 (2014) 2623-2627.
[6] T. Benincori, S. Arnaboldi, M. Magni, S. Grecchi, R. Cirilli, C. Fontanesi, P. R. Mussini, Chem. Sci. 10 (2019) 2750-2757.
[7] S. Arnaboldi, T. Benincori, A. Penoni, L. Vaghi, R. Cirilli, S. Abbate, G. Longhi, G. Mazzeo, S. Grecchi, M. Panigati, P. R. Mussini, Chem. Sci. 10 (2019) 2708-2717
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