1,720,997 research outputs found
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
Preparation, characterization and solid state NMR investigation of a dye-containing smectite clay
No full textThis paper presents the preparation and characterization of the smectite clay Laponite modified by intercalation of dimethyldioctadecylammonium chloride and the cationic dye methylene blue. The modified clay (Laponite Blue) has been characterized by FT-IR, X-Ray diffraction, thermogravimetric analysis, SEM and solid state NMR. The exploitation of several characterization techniques and of an extended multinuclear and multi-technique solid state NMR approach allowed us to obtain detailed information on the intercalation of the dye in the clay and the structural and dynamic properties of the organic-inorganic interface between the clay surface and the organic modifiers. Laponite Blue appears interesting for the future preparation of polymer nanocomposites with good mechanical and barrier performances as well as exploitable optical properties
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
Probing the initial stages of solid-state reactions by total reflection EXAFS (reflEXAFS)
No full textThe effectiveness of reflEXAFS as a probe for the very initial stages of solid-state reactions has been investigated by studying the local chemical environment of Ni during the reaction of a 150 Å thick film of NiO deposited onto Al2O3. The reaction to give the spinel phase requires temperatures about 1000 °C, and reaction progress degrees could be obtained by increasing the firing time at high temperature. At lower temperatures (≅930 °C), a structural rearrangement in the NiO film could be detected, seemingly related to the process by which local chemical equilibrium is attained at the interface. This should be regarded as the very early stage of the solid-state reaction and therefore this experiment proves the feasibility of a reflEXAFS investigation on these aspects of solid-state chemistry
RISULTATI IMMEDIATI E A DISTANZA DELLA PAPILLOSTOMIA TRANSDUODENALE. NOTA II; CONSIDERAZIONI SULLA PANCREATITE POSTOPERATORIA
No full textDispelling 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
- …
