1,720,956 research outputs found
The recovery sustainable urban water systems management and Green Roofs. Widespread conversion of impervious surfaces existing greened surfaces in urban areas
No full textThe conversion of impervious surfaces in greened surfaces can reduce adjustment of sewer systems problem, reducing the overload produced by events of downpour, improving urban water systems management. The feasibility in existing building depends on the extent of the new applied loads. In order to check the endurance of green roofs in Mediterranean climate (Rieti -inner central Italy), in real conditions, with only 80 mm of substrate, an experimental roof has been set up . A reference roof and two kinds of green roofs has been built up on a laboratory roof. Measures are conducted in natural weather. A first set of measures is showed, providing the performance of accumulation and drainage layers. Moreover a qualitative analysis of planted vegetation growth is provided
Usefulness and Effectiveness of Retention Layers in Green Roofs
No full textGreen roofs are an emerging technology for urban climate mitigation, rain-water management and energy saving. Even though they are long time used, there are few data on the relation between its construction and performance for lightweight extensive systems in Mediterranean climate. This is particularly relevant for existing buildings as the opportunity of converting conventional roofs in green ones is limited by the extent of the new applied loads. The most part of the mass of these systems is due to cultivation substrate and retention layer, thus proper design would let a wider adoption of this technology. Moreover, data available in the open literature are mainly referred to northern temperate zone where drought periods are of little concern.
In this framework, experimental light load (80 mm substrate) green roofs have been built up to check their performances in Mediterranean climate (Rieti -inner central Italy) with different retention layers. Drainage performance have been measured in natural weather as well as qualitative analysis of vegetation endurance to draught periods with a specific focus on the relevance of retention in drainage layer.
Results show that, contrary to state-of-the-art statements, water retention actually occurs more in the substrate rather than in the retention layer that thus appears to be far less critical in green roof systems set up
Sustainability of compact cities: the SOS_UrbanLab activity
Full text linkUrban development is facing new challenges to allow the evolution of the environment, in accordance to sustainability principles. In this context, decision makers have to answer to three main issues: how to intervene on the existing compact cities? How to combine and develop interventions on different scales? How to move from requalification to regeneration? The SOS_UrbanLab (Engineering Laboratory for Construction and Environmental Sustainability) researches, starting from a multi-scale analysis, propose a set of eco-friendly solutions to support the potential and capability of territories, integrating their benefits to reach a full sustainable approach
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
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
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