1,721,690 research outputs found
Riabitare Torrevecchia. Dove arriva la resilienza di un edificio
No full textLe condizioni dei grandi complessi residenziali realizzati in Italia tra gli anni ’60 e ’80 del XX secolo sono deficitarie e presentano sostanziali limitazioni energetiche, strutturali e tipologiche. A tal proposito la ricerca propone un metodo di approccio al progetto per una riqualificazione integrata attraverso il caso studio degli edifici a torre del quartiere di Torrevecchia a Roma, adeguatamente rappresentativo, ed incoraggia interventi mirati al recupero dei manufatti piuttosto che una mera operazione di retrofit. È stato condotto un percorso diagnostico-conoscitivo del manufatto preso a campione ed in particolare degli elementi che più risentono dell’obsolescenza ed incidono sui livelli di prestazione. La prima fase di analisi storica, progettuale, urbana e fotografica è avvenuta tra l’archivio dell’ATER e lo studio Passarelli. In sito si è proceduto a verificare e documentare le condi-zioni igieniche, di ventilazione e illuminazione degli alloggi, evidenziando le problema-tiche in relazione alle mutate esigenze abitative. Nella seconda fase è stata considerata la consistenza ed il comportamento strutturale dell’edificio: classificando lo stato di armatu-re e solai ed osservando le oscillazioni a differenti livelli, si è realizzato un modello al SAP per analizzare i modi di vibrare della torre. Sulla base di queste analisi è stato elaborato il progetto, pensato come un risanamento conservativo che non alteri l’espressione archi-tettonica del complesso. È stato definito un intervento che tenesse in forte considerazione l’impatto sociale, non solo valorizzando gli spazi pubblici degradati ma anche cercando di ridurre al minimo la fase di cantierizzazione. Il progetto prevede interventi di effi-cientamento energetico dell’involucro edilizio e degli impianti, ricercando la sostenibilità ambientale, economica e sociale, attraverso strategie integrate come la scelta del cantiere leggero e di soluzioni tecnologiche di produzione industriale customizzata
Protists’ microbiome: A fine-scale, snap-shot field study on the ciliate Euplotes
No full textHost-microbiome relationships play a fundamental role in the evolution and ecology of any living being. As unicellular organisms, protists represent a unique eukaryotic model to investigate selection mechanisms of the prokaryotic microbiome at the cellular level. Field investigations are central to disentangle relative importance of selective drivers in nature. Here we performed an analysis on data from a snap-shot field study reported previously on bacterial microbiomes associated to natural populations of protist ciliates of the genus Euplotes to detect at a fine scale any influence of habitat and/or host identity in microbiome selection. Comparative analyses revealed environment at a relatively large scale (sampling area) as the main driv-ing factor in shaping prokaryotic communities' structures. No evidence of habitat as key-factor emerged when a smaller spa-tial scale was considered (pond/channel or site). When only microbiomes of ciliates from the same site were compared, a clear assessment on the influence of host identity at the species level was not achieved, probably due to the small and unbalanced number of individuals for the two considered host species. Starting from this point, wider sampling campaigns will contribute in the future to depict a general view of the drivers influencing the prokaryotic microbiomes of natural protist populations.(c) 2022 Elsevier GmbH. All rights reserved
Aromatic plants: Molecular biology/biotechnology approach
No full textConsumer interest in aromatherapy has greatly increased in recent years due to its power to reduce stress, pain, and depression, and to enhance memory, energy, and sleep. As a consequence, aromatherapy is increasingly used in the “emotional design” of environments such as hospitals, spas, retail spaces, restaurants, and hotels
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
Plastic litter changes the rhizosphere bacterial community of coastal dune plants
No full text: The presence of plastic litter in coastal environments like beach-dune systems has been well documented, and recent studies have shown that this pollutant can influence sand properties as well as dune vegetation. However, the effects of plastics on rhizosphere bacterial communities of dune plants have largely been neglected. This is an ecologically relevant issue since these communities may play an important role in improving plant growth and resilience of dune systems. Here, we explored the impact of plastic litter made of either non-biodegradable polymers (NBP) or biodegradable/compostable polymers (BP) on the structure and composition of rhizosphere bacterial communities associated with two widespread species along coastal European dunes, Thinopyrum junceum and Sporobolus pumilus, by using a one-year field experiment combined with metabarcoding techniques. Both plastics did not affect neither the survival nor the biomass of T. junceum plants, but they significantly increased alpha-diversity of rhizosphere bacterial communities. They also changed rhizosphere composition by increasing the abundance of the phyla Acidobacteria, Chlamydiae, and Nitrospirae, and of the family Pirellulaceae, and reducing the abundance of the family Rhizobiaceae. NBP reduced drastically the survival of S. pumilus while BP increased its root biomass compared to controls. BP also increased the abundance of the phylum Patescibacteria of the rhizosphere bacterial communities. Our findings provide the first evidence that NBP and BP can change rhizosphere bacterial communities associated with dune plants and highlight the importance of investigating how these changes can affect the resilience of coastal dunes to climate change
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