In questo articolo esploriamo il potenziale di innovazione sociale (IS) dell'im- presa artigiana attraverso 6 iniziative realizzate a Venezia tra il 2015 e il 2021. Emerge che l'impresa artigiana può dare un forte impulso ai processi di IS me- diante l'utilizzo condiviso e creativo di competenze cognitive e tecniche. Inoltre, il potenziale di IS è tanto più grande quanto maggiore è la capacità di riconoscere l'IS come esito di un processo sociale e non come esito di un processo tecnico o tecnologico.

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Recently, public policies of urban regeneration have intensified and multiplied. They are being promoted with the aim to start social and economic dynamics within the local context which is subject to intervention. From the empirical analysis, we realise that such activities are mainly implemented by three subjects or by mixed coalitions (public institutions, actors of the third sector and companies). Within them, each player is moved by a multiplicity of interests and goals that go beyond their own nature – public interest, market and mutualism – and tend to redefine themselves, thus becoming hybrid forms of production of value (social, economic, cultural). By studying a number Italian and Catalan cases, this essay deals with the theory that, under specific conditions and configurations, a collaborative direction – of organization, production and design – would give life to successful procedures, even without the identification of a one-best-way. The collaboration is not simply a choice of operation, but a real production method which mobilises social resources to create hybrid solutions – between state, market and society – to complex issues that could not be faced solely with the use of the rationale of action of one among the three actors. In this framework, the systems of relations and interactions between players and shared capital become an essential condition for the success of every initiative of urban redevelopment, or failure thereof. Such initiatives are brought to life by the strategic role of individuals who foster connections as well as the dissemination of non-redundant information between social networks, and collective and individual actors which would otherwise be separated and barely able to communicate and collaborate with each other. In addition to the functions carried out by knowledge brokers, that have been extensively described in organisational studies and economic sociology, the aforementioned figures act as real social enzymes, that is to say, they handle the available information and function as catalysts of social processes of production of knowledge. Moreover, they increase the reaction speed, working on mechanisms which control the spontaneity.

La lr n. 34/2018 "per la tutela, lo sviluppo e la promozione dell'artigianato veneto", si col-loca in un contesto in cui l'interesse per il comparto appare rafforzato sia per la progressiva contrazione del numero delle imprese, sia per le opportunità che vengono riconosciute al settore in termini di sviluppo urbano sostenibile. Il contributo indaga il potenziale impatto del provvedimento sul territorio e sulle imprese, con particolare riferimento al contesto spe-cifico della Venezia insulare.

Gli autori propongono la risonanza magnetica come esame di prima scelta nello studio delle trombosi venose cerebrali. La presenza di un segnale iperintenso nelle immagini pesate in T1 e T2, lungo il decorso delle vene cerebrali, conferma senza dubbio la diagnosi. Vengono discussi i problemi relativi all'effetto paradosso del flusso ematico cerebrale ed i protocolli d'indagine di questa patologia. The use of MR without any dependance on field strenght can solve the diagnostic problem of cerebral venous thrombosis, avoiding contrast media and/or vessel puncture. In fact the easy detection of hyperintense signal within venous structures, revealed in T1 weighted images and persistent in T2 weighted images, confirm the clinical hyphothesis of cerebral venous thrombosis, without any further examinations. The higher sensibility of MR will show venous infarcts and haemorragic soffusions, sometimes maldetected by CT.