1,721,019 research outputs found
GEANT4 calculation of normalized glandular dose coefficients in computed tomography dedicated to the breast
No full textA Monte Carlo study of monoenergetic and polyenergetic normalized glandular dose (DgN) coefficients in mammography
No full text
La mobilità articolare nel mantenimento dell’autonomia nell’anziano
No full textII° CONVEGNO INTERNAZIONALE, IL RUOLO DELL’ESERCIZIO FISICO NELLA PREVENZIONE DELLE MALATTIE E NEL MIGLIORAMENTO DELLA QUALITÀ DELLA VITA, P.60, RIMINI MAGGIO 2005
Use of Cement Kiln Dust to Stabilize Construction and Demolition Waste for Pavement Applications
No full textHigh volumes of construction and demolition waste (CDW) are continuously produced worldwide. The European Commission aims to increase the recycling of non hazardous CDW to a minimum of 70% in weight terms by 2020. Hence, there is increasing pressure on researchers to focus on the valorization of these alternative materials for use in the world of construction alongside traditional materials. CDW contains materials from excavation and/or demolition and are typically heterogeneous in terms of composition, grain size, and toughness; furthermore, some particles are more sensitive to degradation processes than others. In order to increase durability while maintaining sufficient strength levels, one solution consists of chemical stabilization with cementitious binders. The paper illustrates the results of a laboratory investigation into the stabilization of CDW using cement kiln dust (CKD). Compared to ordinary Portland cements, CKD exhibits a weak binding attitude due to the limited content of oxides; hence, it has to be employed in larger quantities. The results obtained with the use of CKD are encouraging since it increases the strength and stiffness of CDW, thus leading to a material completely made up of recycled wastes and by-products usable in the formation of pavement subbases and subgrade
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
- …
