1,720,988 research outputs found
Precast concrete module for structural and energy rehabilitation of reinforced concrete buildings
No full textConcrete structures built throughout the 20th century show performance deficiencies that lead to undergo seismic and energy comfort consequences. In particular, independent reinforced concrete (RC) structures do not comply with European energy efficiency standards due to the absence or insufficient insulation, or the existence of significant thermal bridges. Moreover, they were built with obsoleted construction methodologies that, being incompatible with actual structural canons, make them vulnerable to earthquakes. The current prefabricated technologies, used for the refurbishment of buildings, are focused on energy retrofitting, leaving the field of structural reinforcement unexplored. The challenge of this research is to improve and monitor the mechanical characteristics of RC buildings as well as their energy performance through precast concrete modules. In this paper, preliminary design strategies of the innovative panel is presented. It connects the existing façades, stiffening the pillar-beam nodes in order to obtain a box-like effect. Integration with real-time detection sensors ensures monitoring of energy and structural performance
Performance Monitoring of Refurbished Buildings through Innovative Precast Concrete Modules
No full textThe existing reinforced concrete (RC) buildings, built throughout the 20{th} century, present inadequate insulating characteristics that make them vulnerable to climate changes. Moreover, the actual construction canons, which take into account the buildings seismic safety, underline the incompatibility and the risk these structures run and the importance to monitor their performance over time. The building refurbishment by using innovative precast concrete panels integrated with detecting sensors improves the building's performance and makes possible its real time monitoring. This paper proposes the first steps of the innovative methodological approach to develop an information system that allows acquiring and processing data for the refurbished RC buildings monitoring. The Information System consists of a computer platform (named Performance Detecting Platform-PDP), a transmission box used for the data collection and transmission with cloud computing system, and the sensors embedded into the panels dedicated to the data acquisition through Internet of Things (IoT) support. This tool allows recording and reporting energy and position data that the PDP processes in order to monitor the performance trend and to alarm in case of building deficiencies
Opportunities and criticality related to tax incentives for building envelope energy efficiency. an operational procedure applied to a residential building.
No full textThe existing building stock accounts for approximately 40% of final energy consumption, due to the
high energy requirements, related to heating, cooling, lighting, and domestic hot water production, coupled with limited use of renewable energy sources. In this context, Italian legislation, in compliance
with the European Directives on environmental sustainability, has enacted many regulatory measures in order to reduce emissions and incentivize energy efficiency in existing buildings. However, there appears to be a widespread lack of procedural and regulatory guidance regarding construction technologies and materials, especially on non-bonded and non-historic buildings, but nonetheless characterizing the established building fabric of cities. This research focuses attention on the issue of
energy upgrading of the opaque envelope of apartment buildings related to the exploitation of tax incentives. Specifically, it addresses strategic choices and material selection, with particular regard to
those that comply with the Minimum Environmental Criteria (CAM).
The paper illustrates a case study of a condominium that took advantage of the tax incentives under Decree Law No.34/2020 (commonly known as “Superbonus 110%”). The building underwent a global redevelopment focused on energy efficiency, downstream of an in-depth cognitive process and the subsequent process of compatibility between the different design choices deemed compliant
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
Designing a sustainable regeneration in the outskirt of Agrigento
No full textThis paper describes a case of building recovery and sustainable re-use in Sicily, that is the recovery of Villaseta. It is a very degraded neighborhood in the outskirts of Agrigento. The main goal of the redevelopment project is therefore the rebuilding and the environmental regeneration of the neighborhood, using sustainable technologies and tools, with the construction of vegetable gardens and urban gardens, the production of renewable energy and the sustainable recovery of existing buildings. The eco-friendliness of the restoration project is therefore given by the use of garden roofs and vertical gardens. Villaseta will be a real "green lung" able to give greater environmental awareness and landscape to the city of Agrigento
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