Search results for "NICHE"
showing 10 items of 1201 documents
Timber framed with masonry infill: a historical anti-seismic device. The Portuguese Pombaline gaiola.
2017
La ricostruzione postsismica e la prevenzione sismica sono stati da sempre un fondamento costruttivo.Questo studio analizza la tipologia costruttiva della gaiola pombalina, un sitema costruttivo e strutturale molto diffuso in Portogallo ma non solo, adottato a Lisbona a seguito del terremoto del 1755. Si analizzano i materiali e le tecniche costruttive, gli elementi utili al rinforzo e consolidamento della struttura muraria, ampiamente diffuso in area mediterranea a partire dal XVIII secolo.Questo sistema costruttivo può e deve anche oggi essere considerato un utile presidio antisismico da riconoscere e preservare da interventi incolti, se non addirittura da incongrue demolizioni. Post-seis…
Diversification in evolutionary arenas - assessment and synthesis
2019
Abstract Understanding how and why rates of evolutionary diversification vary is a central issue in evolutionary biology and ecology. The concept of adaptive radiation has attracted much interest, but is metaphorical and verbal in nature, making it difficult to quantitatively compare different evolutionary lineages or geographic regions. In addition, the causes of evolutionary stasis are relatively neglected. Here we review the central concepts in the evolutionary diversification literature and bring these together by proposing a general framework for estimating rates of diversification and quantifying their underlying dynamics, which can be applied across clades and regions and across spat…
Le Curve di Apollonio. Tradizione ed Innovazione nei processi risolutivi
2010
La trattazione del luogo geometrico “conica” assume carattere di grande generalità nell’applicazione dei metodi della Scienza della Rappresentazione. Lo studio teorico e pratico delle proprietà di questa curva trova contributi fi n dai tempi antichi delineando, nel corso dei secoli, diversi approcci culturali che tracciano momenti salienti dell’evoluzione del pensiero geometrico/matematico. Si propongono inedite vie risolutive, attraverso procedimenti omologici, per la costruzione del profi lo della curva, di cui siano noti cinque suoi elementi notevoli. In particolar modo, ci si concentra sugli attuali strumenti digitali atti a tracciare le curve di secondo grado in oggetto. Si presentano …
Dependence of Arctic char (Salvelinus alpinus L.) on littoral and pelagic energy sources in a subarctic lake, Saanajärvi
2007
Past and current distribution of Charaxes jasius jasius (Linnaeus, 1767) (Lepidoptera Nymphalidae) in Sicily in relation to its host plant, Arbutus u…
2022
The authors provide an updated overview of the past and present regional distribution of the two-tailed Pasha Charaxes jasius jasius (Linnaeus, 1767) (Lepidoptera Nymphalidae) and its host plant, the strawberry tree Arbutus unedo L. Most of the occurrence data reported in the entomological literature was confirmed, and several new populations have been recently dis- covered. The distribution pattern of the insect and its host plant overlap almost perfectly. C. jasius jasius is more abundant and forms large and stable populations on the Peloritani Mts. and in some areas of the Madonie Mountains. The high number of new records of C. jasius jasius suggests that the species is experiencing a sp…
Compensation of Nonlinearity of Voltage and Current Instrument Transformers
2019
This paper aims at characterizing and improving the metrological performances of current and voltage instrument transformers (CTs and VTs) in harmonic measurements in the power system. A theoretical analysis is carried out to demonstrate that, due to the iron core nonlinearity, CT and VT output signal is distorted even when the input signal is a pure sine wave. Starting from this analysis, a new method for CT and VT characterization and compensation is proposed. In a first step, they are characterized in sinusoidal conditions and the harmonic phasors of the distorted output are measured; in the second step, these phasors are used to compensate the harmonic phasors measured in normal operati…
Resuscitative endovascular balloon occlusion of the aorta (REBOA) in patients with major trauma and uncontrolled haemorrhagic shock: a systematic rev…
2021
AbstractBackgroundMultiple studies regarding the use of Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) in patients with non-compressible torso injuries and uncontrolled haemorrhagic shock were recently published. To date, the clinical evidence of the efficacy of REBOA is still debated. We aimed to conduct a systematic review assessing the clinical efficacy and safety of REBOA in patients with major trauma and uncontrolled haemorrhagic shock.MethodsWe systematically searched MEDLINE (PubMed), EMBASE and CENTRAL up to June 2020. All randomized controlled trials and observational studies that investigated the use of REBOA compared to resuscitative thoracotomy (RT) with/witho…
Ricerche sulle tecniche di propagazione di specie arbustive autoctone della flora mediterranea e sul loro utilizzo in floricoltura.
2011
The linguistic construction of confirmation niches in online comment sequences
2018
This study starts from the consideration that new media are platforms where communication and language are re-negotiated to adapt new frames (e.g. new politeness, multimodal exchanges) and, in particular, that fora are participatory frameworks, that represent a mined engagement in writing practices (Stommel and Koole, 2010). Discussions are organised as multiparty conversations on several topics, written by participants (i.e website users accessing a parenting forum) at different levels of expertise about health issues (mostly earned through their experience of parenthood; Kata, 2010). the challenge in this paper is : 1) to study asynchronous forum as a talk-in -interaction venue, where seq…
People power : the role of civil society in renewable energy production
2018
The engagement of civil society actors in energy generation can be defined by the term community energy. Community energy initiatives have increased in several countries. This thesis aims at better understanding how this phenomenon emerges and how it can contribute to the decarbonization of our economy. For this purpose, a multi-level perspective on socio-technical transitions and strategic niche management theory were employed as theoretical lenses. The research material consisted of 75 qualitative interviews, a survey of 26 distributed energy experts, and a panel data study of 66 large electric utilities from various countries. Thematic, narrative, regression and descriptive statistical a…