1,721,074 research outputs found
La composition d’histoire à l’examen du professorat des écoles normales
No full textParmentier A. La composition d’histoire à l’examen du professorat des écoles normales. In: La revue pédagogique, tome 36, Janvier-Juin 1900. pp. 437-455
Follow the water - An insight into proton quantum dynamics of selected phases of water by inelastic neutron scattering
Get PDFThe present PhD thesis stems from 36 months of intensive experimental investigation and data analysis of quantum dynamics of the hydrogen nucleus in various amorphous solid states (AIs) and supercritical phase (SCW) of water by inelastic neutron scattering. This doctoral effort places this work into the apparently inexhaustible stream of studies on water, at the same time offering an evidence of the role of density in shapingthesingle-particlepotential-energysurfaceintermsofcurvatureandanharmonicity,ashighlightedbyarecenthigh-impactpublicationinJ. Phys. Chem. Lett. [1]. The layout of the monograph has been thought for a broad audience, with an eye to making it both agile and exhaustive. After a brief introduction on the why and how of water and neutron spectroscopy, two separate chapters are dedicated to the properties of amorphous ices and the supercritical fluid, followed by the presentation of the fundamentals of inelastic (INS) and deep-inelastic (DINS) neutron techniques, and a sketch of the instrumentation employed, which is functional to the full understanding of the development of data reduction and analysis. The subsequent chapter on the potential of mean force (PMF) introduces an alternative and possibly easier-to-manage way to interpret DINS outputs. The arrangement of related data and their interpretation into a scientific paper for a special issue of Front. Phys. is currently afoot. The work closes with a clean report of experimental results and relative discussion, which allows for inferring new insights into the function and effects of the H-bond environment the molecules are immersed in, as well as picturing future investigation scenarios. All INS and DINS experiments described in the following sections were performed at MARI and VESUVIO spectrometers, respectively, both located at ISIS Neutron and Muon Pulsed Source at the Rutherford Appleton Laboratory in the UK, with later data analysis and interpretation developed at the Department of Physics of Tor Vergata University of Rome, Italy. The experimental work was accompanied by the participation by poster contribution in the 2013 International Conference on Neutron Scattering in Edinburgh, UK, the VI Workshop in eV Neutron Spectroscopy (2014) in Abingdon, UK, and the 2016 Erice School (’Water and Water Systems’) held in Erice (TP), Italy, and promoted by the School of Neutron Scattering (SoNS) entitled to Francesco Paolo Ricci. The second meeting called for my personal involvement into the coordination of the final scientific discussion, which is currently included in the proceedings of the conference [2–4]. A fruitful introduction to the PhD route was for sure the pre-doctorate course on general neutron scattering held by ILL in summer 2012 (Giornate Didattiche). As to present, I am about to start a full-immersion training as a McStas professional user, in order to participate in the development of the VESPA Project at the European Spallation Source (ESS). A parallel collaboration is in progress with a team based in Sapienza University of Rome in order to investigate anomalous transport properties of ultraconfined water by quasi-elastic neutron scattering (QENS) [5] and other spectroscopic techniques
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Question V : Sait-on comment Parmentier a eu l'idée de propager la pomme de terre ?
No full textQuestion V : Sait-on comment Parmentier a eu l'idée de propager la pomme de terre ? . In: Revue d'histoire de la pharmacie, 38ᵉ année, n°126, 1950. p. 48
Question V : Sait-on comment Parmentier a eu l'idée de propager la pomme de terre ?
No full textQuestion V : Sait-on comment Parmentier a eu l'idée de propager la pomme de terre ? . In: Revue d'histoire de la pharmacie, 38ᵉ année, n°126, 1950. p. 48
Variations on the Author
Get PDF“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
Get PDFWe 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
Get PDFWe 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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