1,721,186 research outputs found
The Attic and its Effect on the Energy Performance of Historic Buildings
No full textAbstractThis paper aims to investigate the problem of attics conservation or dismantling from historic buildings. The attic, unconsciously inherited and planned with the traditional building techniques, constitutes a precious architectural heritage in the field of historic housing in the whole European patrimony. In many cases, the peculiarities of the type of techniques and the use of traditional local materials are the reasons why attics constitute an evidence of an active culture of know-how that has to be preserved. Furthermore, the attic-mediated heat transfer between indoor and outdoor environments, contributes to the saving of building heat loss. Nevertheless, the practice of eliminating attics is particularly diffused, and building owner or architects, preferring to dismantle their structure, compensate this loss by using insulating boards to constitute the final roofing section
TRA TEORIA E PRATICA: l'utilizzo delle reti metalliche nei plafoni teatrali di inizio Novecento in area emiliana.
No full textThis paper aims at investigating advantages and disadvantages of the use of wire meshes as means of support for false ceilings plaster. We investigate the development of the conditions of use of wire meshes between XIX and XX century by comparing two kind of data: on the one hand, those found out in historical building manuals, and on the other hand, those obtained by the study of some cases belonging to historical Emilia-Romagna theaters. In particular, we examine the benefits that the XX century authors of manuals and false-ceilings restorations foresaw and the inconveniences that they couldn’t predict: their stability and the major resistance to earthquakes, the phenomenon of surface deposits and diffuse stains on stucco as a consequence of chemical degradation. Finally, we present some hypothesis based on the results of chemical laboratory analysis on mortar samples of two selected case study, in order to provide a qualitative and quantitative analysis of chemical interactions between lime mortar and wire meshes
Patologia delle neoplasie mammarie della cagna e della gatta: stato dell’arte.
No full textQuesto articolo espone le maggiori novità in merito all’oncologia istopatologica mammaria veterinaria prontamente applicabili alla diagnostica dei tumori mammari nel cane e nel gatto, concentrandosi in particolare su quelle acquisizioni utili nella pratica clinica. Verranno descritti gli aggiornamenti riguardanti la classificazione istologica morfologica, i nuovi metodi proposti per il grading istologico dei carcinomi della cagna e della gatta e, infine, le ultime acquisizioni riguardanti l’applicazione del sistema di classificazione fenotipica su base molecolare, già convalidato per il cancro al seno
Determinazione immunoistochimica e western blot della caderina “E” nei tumori mammari della cagna
No full textTwenty-nine canine mammary samples (5 normal mammary glands, 3 atypical ductal hyperplasia, 8 benign and 13 malignant tumors) were tested by immunohistochemistry (IHC) and Western Blot (WB) for E-cadherin. Both methods revealed a reduction of protein expression as the most important finding. A significant reduction of expression was revealed in dysplastic as well in benign and malignant neoplastic samples. The two methods revealed a significant correlation and absence of IHC false negative evaluation when the data of WB were corrected for the amounts of epithelial cells of the sample
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
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