1,720,989 research outputs found
Indicatori per la valutazione del peso ambientale di sistemi di scaricatori di piena e di vasche di prima pioggia
No full textAssessment of Environmental Impact of Urban Drainage Overflows
No full textAccettato, in stampa (2009
The Role of Life Cycle Structural Engineering in the Transition towards a Sustainable Building Renovation: Available Tools and Research Needs
No full textGiven the current climate emergency and the ambitious targets of carbon emissions reduction, retrofitting strategies on existing buildings typically include reducing energy demand, decarbonising the power supply, and addressing embodied carbon stored in materials. This latter point redefines the role of engineers in the transitions towards a sustainable construction sector, being they responsible for designing low impact, sustainable and carbon neutral solutions. A Life Cycle Structural Engineering (LCSE) approach, inspired by the principles of Life Cycle Thinking (LCT), should thus be adopted for the sustainable renovation of existing buildings. Only recently have pioneering approaches been proposed, tackling multifaceted buildings’ needs, such as those related to energy consumption as well as seismic safety, but often disregarding LCT principles. This study presents a redefinition of the concept of LCSE for sustainable construction and a comprehensive review of available methods and tools to operationalise the LCSE approach in practice, focusing on the consideration of LCT principles in the retrofitting design process, integration of seismic loss estimation and environmental impact assessment, and implementation of integrated retrofitting strategies. The greatest ambition of this work is thus to boost a paradigm shift for building engineers towards an interdisciplinary perspective in building assessment and retrofitting
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
Life Cycle Thinking principles for the design of sustainable seismic retrofit interventions
No full textLife Cycle Structural Engineering: definition of a new tool introducing LCT principles from an early stage of the construction design
No full textRedefining the concept of sustainable renovation of buildings: State of the art and an LCT-based design framework
No full textThe sustainable renovation of existing buildings is commonly intended as the upgrade of constructions by implementing green technologies and eco-friendly materials. More recently, the concept has been broadened to include all the pillars of sustainability (environmental, economic, and social aspects); however, it rarely encompasses structural safety, with the result that buildings renovated to be ‘more sustainable’ may remain structurally unsafe and even collapse in case of earthquake. Recent studies proposed new frameworks to include all these sustainability aspects in the building retrofit; however, these may still fail in the aim of minimizing impacts along the building life cycle and overcoming the barriers to the renovation. In this paper, a critical review of these existing methods for sustainable retrofit is firstly carried out, and the major research needs are highlighted. Trying to overcome these issues, the comprehensive concept of Sustainable Building Renovation (SBR) is introduced, addressing Life Cycle Thinking and holistic perspectives in each phase of the design. Then, an innovative SBR design framework, adopting Multi-Criteria Decision Making (MCDM) methods, a multi-disciplinary Performance-Based Design (PBD) approach, and expanded Life Cycle analyses, is proposed and applied to a typical European building to design and select the most sustainable retrofit option
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
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