1,720,994 research outputs found
The sustainable soul of the past: learning from the present to regenerate outdated urban spaces = L'anima sostenibile del passato: imparare dal presente per rigenerare spazi urbani inattuali
No full textMolti sono gli spazi aperti che oggi non si connotano più come piazze per la collettività,
luoghi di condivisione e di appartenenza, inadatti a soddisfare le attuali attese in termini di
benessere psico-fisico dell’utilizzatore e lontani dalle logiche dell’ecologia urbana. I luoghi
ai quali si riferisce il contributo sono spesso il risultato di una sapiente cultura del progetto:
hanno contribuito al disegno delle città, a migliorare ambiti degradati, ma scontano una
mancata attitudine a proiettarsi in future dinamiche trasformative, risultando spazi sottratti
al ciclo vitale che la loro funzione urbana oggi richiede. Analizzando il ciclo di vita di queste
singole architetture urbane, realizzate prima delle recenti politiche ambientali, sorge l’interrogativo sulla loro effettiva sostenibilità e sulla loro tenuta nella progressione temporale del loro esercizio. Il saggio vuole aprire una riflessione sulle opportunità di modificazione di questi particolari ambiti acquisendo dalle strategie NbS specifiche e misurate tipologie di intervento in una prospettiva di adeguamento in chiave ecosistemica che sia in grado di tutelare l’identità architettonica trovata.There are many open spaces that today no longer connote themselves as community squares, places of sharing and belonging, unsuited to meet current expectations in terms of the psycho-physical well-being of the user and far from the logic of urban ecology. The places to which the contribution refers are often the result of a skilful design culture: they
have contributed to the design of cities, to improve degraded areas, but they suffer from a lack of aptitude to project themselves into future transformative dynamics, resulting in spaces removed from the life cycle that their urban function requires today. By analysing the life cycle of these individual urban architectures, made before recent environmental policies, the question emerges as to their actual sustainability and resilience in the temporal progression of their operation. The essay aims to open a reflection on the opportunities for modification of these particular areas by acquiring from the NbS strategies specific and measured types of intervention in a perspective of adaptation in an eco systemic key that is able to protect the architectural identity found
Il segno e la scrittura compositiva: trascrizioni e realtà
No full textKnowing how to carry out an idea requires autonomy and accuracy, two opposite terms
that in the design process determine the dialogic intersection between the creative
phase and the practice one. It is a rigorous exercise that requires control of the
impulses deriving from intuition.
Recognizing how the intersection of abstract and initially poorly defined elements
can evolve into the sincere and authentic architectural expression to which we tend
determines a reflection on the most specific, characteristic and exclusive communication
and control tools.
The search for communicable control criteria with which to measure ourselves sets the
content of this paper, where the path towards the control of the design process does not
follow the certainty of a univocal practice but is instead configured as an experiment,
subject to the variability of cultural factors and open to new interpretations.
The project we are thinking of is not a finished entity, such as its completed and
verified result, but rather a process. How to begin, how to discipline the ideational
mechanism, how to develop it in a language that recognizes the rules that lead from
abstract expressions of thought to the more cogent ones that have space and form as
their subject?
These are the main issues. In this context, the synthesis process that leads to
identifying the founding traces of a project is arranged as a primary gnoseological
practice. The chosen tools are those of non-figurative representation, oriented
towards a form of graphic conceptualization in which the traces take on meaning and
morphological autonomy.
It is a possible approach, from which considerations and confirmations emerge about
the educational potential and the rational content of the traces, intended as the last and
first graphic conceptualization of the project, on which a critical reflection is proposed.
The interest in the issues about the forms of transferring the idea through different
graphic languages is systematized in a rational operation that investigates the
relationships between composition, shapes and signs, starting from the search for
original factors
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
Diterpenoids and triterpenoids of Salvia x jamensis.
No full textThe genus Salvia L. (Lamiaceae) includes over 900 species widespread all over the world. Various plants of this genus are widely used in folk medicine and some species are listed in the modern Pharmacopoeias. Interesting compounds of this genus are flavonoids, essential oils, diterpenes and triterpenes many of which possess anti-insect (antifeedant), anti-bacterial, anti-fungal, hallucinogenic and antioxidant activities. As a part of our phytochemical research on species of the genus Salvia cultivated in Italian “Riviera dei Fiori” (Liguria) we have studied the exudate of Salvia x jamensis J. Compton. From the surface exudate, obtained by immersion of the fresh aerial parts in CH2Cl2, we have isolated two triterpenoids 1 and 2 and four diterpenoids 3-6 by repeated column chromatography on Sephadex LH-20 and silica gel. Compounds 1-5 were identified as ursolic acid, betulinic acid, isopimaric acid, 14--hydroxy-isopimaric acid and 7,8-dihydrosalviacoccin respectively by comparison of their spectral data with those reported previously. 6 is a new natural compound and its structure was determined as shown (15,16-epoxy-cleroda-3-en-7,10-dihydroxy-12,17;19,18-diolide) from the 1H- and 13C-NMR spectra and on the basis of 1H-1H-COSY, TOCSY, ROESY, HSQC and HMBC correlation
Social wasp trapping in north west Italy: comparison of different bait-traps and first detection of Vespa velutina
No full textTwelve bait-traps were tested and compared in order to find the best lure for studying social wasp populations in North West Italy.
Polistes associus Kohl, Polistes dominula (Christ), Polistes gallicus (L.), Polistes nimpha (Christ), Vespa crabro L., Vespa velutina Lepeletier, Vespula germanica (F.), Vespula vulgaris (L.), and Dolichovespula media (Retzius) were trapped for a total of 5,077 specimens in the period 2007-2012. V. velutina was captured at Loano (Liguria) for the first time in Italy by means of a yellow cap trap filled with beer. V. crabro, V. germanica and V. vulgaris were the most abundant species in the social wasp communities studied. Beer in clear, colourless and transparent, 1.5 l polyethylene bottles with yellow and white coloured caps was a good bait-trap combinations for all social wasp species, while it trapped only some Bombus terrestris (L.) specimens. A white cap trap filled with commercial mint syrup solution was a good combination for trapping Bombus argillaceus (Scopoli) and a yellow cap trap filled with a solution of vinegar, sugar and honey was the best combination for trapping Apis mellifera L
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
Efficacy of fungicides against downy mildew of basil (Peronospora belbahrii) in Italy.
Full text linkSweet basil (Ocimum basilicum) is in Italy an economically important herb crop cultivated both in greenhouse and in field for fresh and mainly processed (pesto sauce) consumption. Downy mildew (Peronospora belbahrii) (Belbahri et al, 2005; Thines et al., 2009) is the major threat of this crop and it needs many fungicide applications. Over many years, metalaxyl-M was the most utilized active ingredient (a.i.) even if during the last years efficacy reductions were pointed out probably due to pathogen resistance issues (own data not yet published). Mandipropamid, azoxystrobin and fluopicolide+propamocarb a.i.s are also authorized but, because of the risk of resistance development, the availability of other products, possibly with different MoA, should be useful. The aim of this study was to evaluate the activity against P. belbahrii of some fungicides authorized in Italy on other herb crops but not on basil as dimethomorph, fosetyl-Al, amisulbrom and cyazofamid..............................
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
- …
