1,720,959 research outputs found

    Ri-costruire una natura contemporanea

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    La crisi ambientale ci costringe con urgenza a formulare nuovi modelli di sviluppo che mirino a re-inserire la società umana all’interno dell’ecosistema naturale e trovare un equilibrio tra il sistema dei bisogni e il sistema degli oggetti. Il presente contributo esplora le opportunità offerte dall’incontro di due approcci progettuali di recente sviluppo: la biomimesi e la biofilia, due campi dalle sostanziali differenze applicative e teoriche,che vedono nella riscoperta della natura e dei suoi processi l’opportunità per ridefinire la società nelle sue componenti materiali e immateriali

    Healthy Plants vs Efficient Living Wall: Laboratory experiment and data analysis

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    Living walls are increasingly adopted as green infrastructures to reintroduce nature in built environment and provide benefits in addition to aesthetic amelioration such as the improvement of air quality or the increase of biodiversity. As for other nature-based solutions, living walls are complex systems in which vegetation plays a pivotal role in the mitigation of adverse conditions. Indeed, the efficiency and the aesthetic appearance of these plant-based strategies strictly depend by the health status of plants used to build the living wall itself. Substrate play a pivotal role on plant health and growth along with environmental conditions, such as light exposure, temperature and humidity. However, sustainability features of substrate are often overlooked, and non-renewable materials are frequently used to produce growing media for living walls. Therefore, this study presents and discusses results obtained during a 120-days laboratory experiment concerning the effects of some innovative growing media on health and growth status of plants commonly used for vertical greening. These innovative growing media were produced by upcycling some organic waste and by-products collected from local supply chain such as cork obtained by stoppers, raw wool, hazelnut shells, hemp stalks, fronds of invasive freshwater vegetation, and coffee grounds. Each waste and by-product have been mixed with regular soil used for the cultivation of ornamental and herbaceous plants (Chlorophytum comosum, Spathiphyllum wallisii and Mentha spicata). The chlorophyll content was considered as useful index to evaluate plant health status. It was monitored on plants set in modules that contain varied innovative growing media through a non-destructive procedure performed by an optical manual metre. On the other hand, the plant growth was assessed on the same plants by monitoring the “Total Leaf Area” (TLA) and the “Number of Leaves” that were used to calculate the “Mean Leaf Growth Index”. This index was elaborated to provides indications about the mean growth of plants during the experiment running. Moreover, two-way ANOVA was performed to statistically assess the effect of these innovative substrates on chlorophyll content and TLA. Promising results were obtained for some innovative growing media such as those containing hazelnut shells, grinded cork and hemp stalks. Indeed, all three plant species set up in these growing media presented positive results concerning the chlorophyll content and the “Mean Leaf Growth Index”. These outcomes suggest implementing further studies to move towards a techno-ecological strategy that consider plant physiology an essential indicator to design sustainable and efficient living walls. Moreover, this study proposes a ground-breaking methodology supported by the circular mindset that can be adopted to develop further substrates based on the upcycling of undervalued materials at local scale

    City that embraces nature. Designing with vertical greenery

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    Vertical greenery offers the possibility of redefining the relationship between buildings and vegetation, promoting a biophilic concept of the city that aims to reactivate natural processes and social cohesion. The flexibility and multifunctionality of these systems allow their application in very different contexts, seeing unused urban spaces as alternative places suitable for plant colonisation. The present contribution expands the contemporary debate within which to evaluate the collaboration between man and nature by exploring functional possibilities aimed at overcoming the use of vertical greenery as mere ornamentation. The approaches presented feed the reflection on the interdisciplinary character of this type of technological green, showing an evolving understanding of the environmental, social and economic impacts at a territorial level

    A socio-ecological approach to investigate the perception of green walls in cities: A comparative analysis of case studies in Turin and Lisbon

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    New urban greening practices are increasingly adopted to contrast and mitigate critical issues of urban areas. These strategies involve nature-inspired solutions to increase sustainability and restore natural processes in cities. In this framework, green walls play a pivotal role to reintroduce nature and provide both environmental and socio-cultural benefits in high densely cities. Despite green walls contribute to increase the aesthetic value of buildings and people's consideration of the area, methodologies to effectively assess their social benefits are still lacking. This study proposes a place-based approach to investigate the Restorative capacity of two outdoor green walls: a modular living walls system covering two facades of a public university building in Turin (Italy) and a plastic planter boxes based living wall located in an inner courtyard of a cultural centre in Lisbon (Portugal). Firstly, the two living walls were characterised through direct observation considering technical, spatial, and social aspects that influence the fruition and the biophilic perception of these public spaces. Then, a self-rating questionnaire based on the Perceived Restorativeness Scale model was given on-site to participants to investigate the influence of green walls on people's cognitive perception and well-being. The novel Green Wall Perceived Restorativeness Scale consists of 17 items that evaluate individuals' perceptions of green walls, emphasising their attractiveness, integrative role in the environment and contribution to the overall appeal and comfort of space. Similar results between sites suggest that common features such as development at maximum building height, symmetrical disposition, element repetition and plant variety are drivers of citizens perception of green walls. Outcomes support the recognised link between citizens aesthetic appreciation of green walls and their perceived sense of comfort and mental relief, related to the Being away factor. The spontaneous social gathering and citizens resting near both green walls creates evidence of the attractiveness of this nature-based solution as a landmark in the urban environment. These conclusions demonstrate the pivotal role of urban biophilic design to combine natural and artificial elements in architectural and landscape design creating an opportunity to increase the use of green walls to contribute to citizens well-being in urban settings

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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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