1,720,991 research outputs found
INDIRECT GREEN FAÇADE SYSTEMS: A PROPOSAL OF A GLOBAL PERFORMANCE INDICATOR FOR IN/OUT EVALUATION
No full textAll the recent studies about green buildings agree upon the importance of their environmental sustainability. This goal finds confirmation also through the recent green building assessment tools, which give higher rating points to environmental aspects of sustainability. Certainly the increase of buildings performances, thanks to an efficient use of energy, water and materials, or waste and CO2 emission reduction, is a tangible way to reduce environmental impact, but it couldn’t be enough in high-density urban areas, where climate change due to global warming intensifies air pollution, surface temperatures and heat island effects (UHI).
Therefore, each green building should enhance its environmental contribution, but only if it’s part of a well-balanced urban scale green planning, pointing to urban biodiversity enhancement, ecosystems protection and vegetation improvement as well. It’s not trivial at all to point out that façades are the visual and behavioral joining link between buildings and the environment: from this perspective, façades need to take off their traditional function of partition between indoor and outdoor, to rather become an active and dynamic interface capable to maximize environmental buildings performances.
Even if there isn’t an explicit relationship between green building and “vegetal skin”, Vertical Greenery Systems (VGS) represent by now a recognized and strategic way to reduce the overall impact of the built environment, especially in urban areas that have typically limited availability of horizontal spaces at street level for urban greening.
This paper highlights the advantages of Indirect Green Façades in both the cases of new and existing buildings, and proposes a global performance indicator for their evaluation. While green roofs are an established technology in construction and assessment of buildings, green façades still find difficult to develop. The introduction of a global performance indicator for Indirect Green Façades could encourage the adoption of this technology in urban regeneration actions, also for low quality building stock typically concentrated in suburban areas, to improve the city image as well.
Hopefully, this indicator could be then implemented in several green building assessment tools and will contribute to spread the VGS culture
Green perspectives for Italian buildings façades
No full textAlthough the theme has been studied for more than a decade, the green transformations of buildings are limited in practice and often new buildings, by large private or public estates, promoted and publicized it to gain public support. Is it possible to think about a widespread action to "green" our cities? If in other European countries the responsive-ness to this issue is certainly greater, in Italy there is still too little attention on this topic (in facts some people seem to be still more focused on economic expenditure than on the environmental impact) and the presence of a historical/monumental building herit-age can be a further issue, because it requires specific authorization process (longer times) and rises the level of the restoration project (costs). Neglecting the monumental heritage which actions (on a national scale) can "green" the big cities, starting from the maintenance of the building facades? The paper introduces, first, the new national "facade bonus" that will be used to improve building facades, in a perspective of greater urban decorum, with a tax credit of 90% for the restoration and recovery expenses. Then, it analyses the current maintenance condi-tion of private properties and some green facade solutions. Assuming widespread inter-ventions in the form of extraordinary maintenance, it discusses - for a case study -environmental (water and CO2) and economic issues. At the end, it proposes some modifications to the recent national rules to facilitate interventions, awarding not just the simple redevelopment of the facades but, where possible, "green" actions on build-ings to achieve the Strategic Agenda objectives
Opere provvisionali per manufatti in calcestruzzo: gestione operativa, produzione e sicurezza
No full text
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
Even the Details Make a Difference: Problems and Solutions Regarding Interventions on Historic Masonry Cornices
No full textThe brick masonry envelope of a historic building may host several
protruding elements creating graceful chiaroscuro effects. Windows frames and
cornices made of fair-faced bricks protect façades and windows from rainwater
and sunlight. They all have a very precise functional role and they have to face
and manage natural agents during all their lifespan.
Rainwater, fog and snow can bring moisture inward in the wall and favour
mould and biological growth. Large overhanging elements can cause problems of
rotational stability, which are solved through the affixing of sturdy corbels. Brick
masonry forming these elements can be affected by ageing and malfunction, but
some design or construction inaccuracies can accelerate these phenomena.
The reduction, simplification or the disappearance of such decorated projecting
elements in contemporary architecture certainly did not reduce these types of
damage.
Since knowledge of construction technique and constant correct maintenance
works are the natural methodology for the conservation of this architectural element,
errors in diagnoses led to incorrect consolidation and maintenance procedures
that may lead to unexpected consequences and be the cause of increased
surface degradation of the architectural heritage.
The aim here is to report the consequences of inaccuracies in design or maintenance
of projecting elements, with reference also to the brick facades of one of the
most important Baroque buildings in Turin, part of the UNESCO site “Residenze
Sabaude” and place of the first Parliament of the Kingdom of Italy
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
LA CASA PER UFFICIALI DI MARINA DI G. VIOLA E G. SAMONA’ A TRAPANI
No full textDopo lo smantellamento dei bastioni e delle “logore muraglie” che circondavano l’antico centro della città di Trapani, le aree resesi disponibili vennero utilizzate per la costruzione di nuovi edifici che determinarono l’espansione della città verso est e la ridefinizione del suo bordo sull’acqua, a sud-ovest. La demolizione del Bastione di San Francesco ed il prosciugamento del tratto di mare alle spalle del Convento che gli dava il nome, liberarono alcune aree su cui l’I.N.C.I.S. decise, negli anni ‘30, di realizzare due edifici per Ufficiali e Sottoufficiali di Marina. Entrambi gli edifici, che sorgono su lotti angolari, furono progettati, sul finire degli anni Trenta, dagli ingg. G. Viola e G. Samonà. Come quest’ultimo, “un povero costruttore di case”, come si definiva, avesse pensato di risolvere il problema dell’angolo dell’edificio è testimoniato dal confronto dei disegni di progetto con quanto, poi, in effetti venne realizzato. L’articolo racconta della relazione tra forma urbana, individualità architettonica e paesaggio, approfondendo l’iter progettuale che condusse alla realizzazione dei due edifici accennando anche al loro stato attuale
Facilities components’ reliability & maintenance services self-rating through big data processing
Full text linkThe availability of big data in the information modelling of buildings can be useful to improve maintenance strategies and activities that are integrated in a digital twin. In some countries, such as Italy, tender specifications for public works must avoid any reference to specific brands and models, both in building design and maintenance services: quality levels and service-life objectives must be defined solely through performance specifications with reference to national or international standards. This could be a critical issue when considering reliability and serviceability of facility components, because there are no official methods about the ratings or measurements on the aforementioned performances. To help solving this concern, a method is proposed to broaden the scope of the big data collected from IoT applied to facility components, so as to feed a general and public database capable of normalizing data on faults and the effects of maintenance interventions, e.g. by correlating them with actual running times and operating conditions. In this way, each component on the market can theoretically feed a public and accessible database that collects reports on the occurrence of faults and the maintenance results, thus statistically processing its propensity for durability, the effectiveness of maintenance, the maintainability propensity of components as well as their reliability (e.g. by assessing the interval between maintenance interventions). In this way, a standardization of reliability, maintainability and durability performances ratings for components and serviceability performance rating for facility maintenance services could boost the facility quality design and improve the maintenance management
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