1,721,145 research outputs found
New polyfunctional dendritic linear hybrids from terminal amine polyether oligomers (Jeffamine®): Synthesis and characterization
Full text linkNew dendritic polyether oligomers were synthesized from three different Jeffamines® and characterized. This class of polyfunctional oligomers, bearing on their surface methylester, carboxylic acid, nitrile or amine groups, could be interesting modifying agents to change the properties of materials. The optimization of the iterative synthetic methods, through Michael addition, hydrolysis or hydrogenation, gave first and second generation dendritic structures in good yields.Fil: Froimowicz, Pablo. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Química Orgánica; Argentina. Grenoble Institute of Technology; FranciaFil: Gandini, Alessandro. Grenoble Institute of Technology; FranciaFil: Strumia, Miriam Cristina. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentin
7 Amici per 7 Giorni. Uno studio sulle tracce digitali dei prod(users)
No full textOggi utilizzare internet significa quasi esclusivamente utilizzare piattaforme digitali. Su queste infrastrutture socio-tecniche le attività, umane e non, sono sempre più regolate da sistemi di raccomandazione algoritmici ricorsivi che raccolgono, archiviano ed elaborano incessantemente i dati degli individui, permettendo a soggetti perlopiù privati di sviluppare modelli di previsione comportamentale e mettere in atto pratiche commerciali estremamente precise basate sul micro-targeting. Le tracce digitali prodotte dal comportamento e dall'esperienza degli utenti sono quindi la materia prima di questi sistemi computazionali che favoriscono determinate pratiche culturali, dinamiche cognitive, comportamenti individuali e collettivi, nonché modi relazionarsi e narrare sé stessi e gli altri.
Questo studio indaga le tracce digitali degli utenti focalizzandosi direttamente su quelle prodotte da loro: gli user generated contents (UGCs). Utilizzando un’analisi del contenuto come inchiesta, lo studio ha esaminato i post prodotti dagli utenti su 911 profili personali di Instagram e 870 profili personali Facebook, così da comprendere quali micro-narrazioni sono più diffuse su questi social media, le forme comunicative più utilizzate e gli obiettivi collegati
Territorial embeddedness and virtual connections of knowledge and creative workers in Milan
No full textThe paper discusses the relation between territorial embeddedness and virtual connections
among knowledge and creative workers in Milan by challenging the idea that co-presence
is crucial for interaction and that face-to-face (F2F) relations are essential for their success.
Knowledge and creative workers are thus embedded in a wider “space”, that is not neces
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sarily a physical one, but also virtual and ICT mediated. The literature on co-presence and
interaction (particularly within the economic sphere) originates from Becker’s (1974) and
Granovetter’s works (1983). The social mechanisms and internal relations of groups of
professionals are explored by many authors that elaborate on the idea that, notwithstanding
the technological improvements in mobility and communication, people still have to meet
in person and that F2F interactions and physical proximity still matter(Scott 2000; Storper
2013). Both theoretical and empirical researches assign many functions to F2F interactions:
notably, the functions performed cover different aspects of the job sphere, being them
acknowledged as the most efficient means of communication, strong vehicles of creativity,
information, knowledge and trust, and a way through which people can “be into the loop”, in
order to have their reputation tested and screened
7 Amici per 7 Giorni. Uno studio sulle tracce digitali dei prod(users)
No full textOggi utilizzare internet significa quasi esclusivamente utilizzare piattaforme digitali (van Dijck et al, 2018). Su queste infrastrutture socio-tecniche le attività, umane e non, sono sempre più regolate da sistemi di raccomandazione algoritmici ricorsivi (Airoldi, 2021) che raccolgono, archiviano ed elaborano incessantemente i dati degli individui, permettendo a soggetti perlopiù privati di sviluppare modelli di previsione comportamentale e mettere in atto pratiche commerciali estremamente precise basate sul micro-targeting (Zuboff, 2019). Le tracce digitali prodotte dal comportamento e dall'esperienza degli utenti sono quindi la materia prima di questi sistemi computazionali che favoriscono determinate pratiche culturali, dinamiche cognitive, comportamenti individuali e collettivi, nonché modi relazionarsi e narrare sé stessi e gli altri (Beer, 2017).
Questo studio indaga le tracce digitali degli utenti focalizzandosi direttamente su quelle prodotte da loro: gli user generated contents (UGCs). Utilizzando un’analisi del contenuto come inchiesta, lo studio ha esaminato i post prodotti dagli utenti su 911 profili personali di Instagram e 870 profili personali Facebook, così da comprendere quali micro-narrazioni sono più diffuse su questi social media, le forme comunicative più utilizzate e gli obiettivi collegati
Invisible, solidary, unbranded and passionate: everyday life as a freelance and precarious worker in four Italian radio stations
No full textThis article presents an investigation into the everyday lives of freelance radio producers in the Italian radio industry from a perspective that applies the sociology of work to the study of media production. The study adopted an ethnographic approach to explore working conditions and experiences of insecurity, uncertainty, socialising, networking and isolation. The authors identified four features of the radio producers' work, which go well beyond the fact that passion functions as a cover for unfair working conditions. The work of these radio producers is invisible, passionate, unbranded and solidaristic. These features interconnect with the conventional ethos of freelance and precarious workers in the creative industries, where professional identity becomes subsumed by the dominant logic of the industry. If we adopt a Marxist perspective, we could argue that this freelance 'reserve army' experiences a specific kind of 'subsumption' with roots in the workers' teenage fandom-based milieux and in broader popular culture
Tracce digitali, media algoritmici e modelli narrativi degli utenti dei social media
No full textIl processo di piattaformizzazione della società contemporanea, come descritto dagli autori che lo hanno così nominato (van Dijck, Poell, and de Waal 2018) ha introdotto, nel contesto sociale, forme di selezione e di accesso ai contenuti che integrano logiche algoritmiche, moderazione umana e attività degli utenti delle piattaforme.
La teoria sociologica dei processi culturali ha spesso messo a fuoco, anche in epoche pre-digitali, come l’evoluzione del sistema dei media si accompagni a una evoluzione dell’accesso e della circolazione dei prodotti culturali e come questa contribuisca alla formazione degli immaginari e delle conoscenze.
Lo studio e l’analisi critica di alcuni fenomeni come lo sviluppo di una cultura algoritmica, che coinvolge anche i processi di costruzione della narrazione, hanno ulteriormente messo in luce che i processi di selezione sono cruciali, sia nel racconto condiviso della contemporaneità, sia nei processi di formazione dell’immaginario.
La crucialità di questi processi rende importante e urgente il loro studio, ma anche la definizione delle metodologie di ricerca e di analisi più adatte.
La grande disponibilità di dati (big data) resa possibile dalle piattaforme costituisce certamente una opportunità, soprattutto di fronte alla disponibilità delle piattaforme a condividerli per scopi di ricerca scientifica.
Opportunità che va colta considerando anche la possibilità di integrare big e small data nell’analisi.
Il capitolo intende mettere a fuoco le potenzialità della ricerca attraverso i dati (big e small) per la ricostruzione delle forme di narrazione algoritmica che caratterizzano la contemporaneità e contribuiscono a modellarne l’immaginario e le forme espressive
Unboxing the Sharing Economy. Opportunities and Risks of the Era of Collaboration
No full textThe popularisation of the term Sharing Economy, commonly intended as a new socio-economic model based on collaboration and the socialization of value production especially through digital technologies, has revived the scholarly discussion on the extent and consequences of market exchange in society. The idea of a rising “sharing economy” is currently a hot topic in an international debate that builds on the emergence of peer-to-peer network exchanges that rely more on access than on property, on relations more than on appropriation, to call into question the sociological understanding of the relationship between the society and the market that goes back to authors such as Polanyi, Marx and Sombart. Sociological and also non-sociological analyses of the so-called Sharing Economy have multiplied quickly; however, this has produced so far a plurality of fragmented results, especially in the sociological literature. The aim of this monograph is therefore to bring together a selection of contributions that will help identify the analytical categories and indicators needed to interpret this phenomenon from a sociological perspective on a global scale. Through a collection of original empirical research on this topic, from Western and non-Western contexts, by both established and junior scholars, this monograph will make a pivotal contribution to the study of what themes, methods and issues characterise the rise of “sharing” as a socio-economic model and a new frontier of sociological research. In particular, this monograph aims to answer the following questions: what do we mean with “sharing economy”? What kind of positive innovations or possible criticalities might this socio-economic model bring? Does “sharing” really represent an alternative to capitalism, or an example of its transformation? In which areas, and how, is the way of doing business in society changing as a result of the diffusion of “sharing economies”
Invisible workers in an invisible medium: an ethnographic approach to Italian Public and Private freelance radio producers
No full textSharing what? The ‘sharing economy’ in the sociological debate
Full text linkThis essay introduces the subject and interpretative perspective of the monograph ‘Unboxing the Sharing Economy’, and is divided into three parts. The first part illustrates the evolution of the concept of the ‘sharing economy’ and the main analytical implications. The second part outlines the key findings of a systematic review of the literature, which indicates both that academic research on the sharing economy has expanded considerably since 2013, and that sociology’s contribution to this debate remains underdeveloped and somewhat incoherent. The final part both locates the contributions to the monograph in the context of other studies and summarizes its content
Looking for a Job Online. An International Survey on Social Recruiting
No full textThe labor market and the recruiting process is increasingly mediated through technology. This paper examines the use of social network sites as a new channel of hiring and the implications this has on candidates and recruiters.
The main questions are: what kind of candidates and firms use social media in the recruitment process? What is the effectiveness of social media in the matching between supply and demand in the labor market? How candidates represent themselves online and how digital reputation impacts on job search? What is the role of social capital (and digital ties) in social recruiting? What training is undertaken for the professional use of social media?
To answer these questions, an online survey, conducted between March and June 2014, collected responses from 17.272 candidates (8.992 complete responses and 8.280 partial responses) and 1502 recruiters (873 complete responses and 628 partial responses), from 24 countries all over the world. Beyond the global data, the paper present a comparison between five geographical areas
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