Search results for " Social Network"
showing 10 items of 122 documents
Multilayer Network Analysis: The Identification of Key Actors in a Sicilian Mafia Operation
2021
Recently, Social Network Analysis studies have led to an improvement and to a generalization of existing tools to networks with multiple subsystems and layers of connectivity. These kind of networks are usually called multilayer networks. Multilayer networks in which each layer shares at least one node with some other layer in the network are called multiplex networks. Being a multiplex network does not require all nodes to exist on every layer. In this paper, we built a criminal multiplex network which concerns an anti-mafia operation called “Montagna” and it is based on the examination of a pre-trial detention order issued on March 14, 2007 by the judge for preliminary investigations of t…
Creating an Alumni Identity Online through Social Media - the Case of “uB-link”
2014
International audience
The role of social networking services in eParticipation
2009
Published version of a chapter published in Lecture Notes in Computer Science, 5694, 46-55. Also available from the publisher at: http://dx.doi.org/10.1007/978-3-642-03781-8_5 A serious problem in eParticipation projects is citizen engagement – citizens do not necessarily become more willing to participate simply because net-services are provided for them. Most forms of eParticipation in democratic contexts are, however, dependent on citizen engagement, interaction and social networking because democratic systems favour the interests of larger groups of citizens – the more voices behind a political proposition, the greater its chances of success. In this context of challenges the study of s…
A privacy-aware framework for decentralized online social networks
2015
Online social networks based on a single service provider suffer several drawbacks, first of all the privacy issues arising from the delegation of user data to a single entity. Distributed online social networks (DOSN) have been recently proposed as an alternative solution allowing users to keep control of their private data. However, the lack of a centralized entity introduces new problems, like the need of defining proper privacy policies for data access and of guaranteeing the availability of user's data when the user disconnects from the social network. This paper introduces a privacy-aware support for DOSN enabling users to define a set of privacy policies which describe who is entitle…
Sociālo tīklu lietošanas paradumu atšķirības latviešu un igauņu jauniešu auditorijā: Valkas/Valgas piemērs
2015
Bakalaura darba tēma ir latviešu un igauņu jauniešu sociālo tīklu lietošanas paradumi. Mūsdienās ir plašs sociālo tīklu izvēles klāsts, no kā jaunieši var izvēlēties izmantot sev vēlamos, bet tas katram indivīdam var atšķirties, tāpat kā to lietošanas paradumi. Bakalaura darba mērķis ir noskaidrot latviešu un igauņu jauniešu sociālo tīklu lietošanas paradumu atšķirības, kuras var radīt abu valstu atšķirīgā mediju lietotprasmes iesaiste skolu mācību programmās. Darba teorijas daļā tiek apskatīta mediju lietotprasme, sociālo tīklu attīstība, digitālās paaudzes jēdziens, atklājumi par jauniešu drošību un privātumu sociālajos tīklos, kā arī lietojuma un apmierinājuma teorija. Ar anketēšanas un …
Taking care of everyone’s business: interpreting Sicilian Mafia embedment through spatial network analysis
2022
Mafia-type organisations often have a strong geographical and cultural entrenchment in the territory they belong. However, their analysis as a spatially networked social structure is still missing. A combined socio-spatial network analysis is presented here, through the demise of a large police operation called Operazione Perseo in 2008. This approach is developed in two ways. At first, a visual representation of the social network of this large group of mafiosi embedded in a geographical space is presented. Three main salient territorial features of the network are thus highlighted. A high density of links in some neighbourhoods, as well as connections across different Mandamenti, the terr…
Conflict and segregation in networks: An experiment on the interplay between individual preferences and social influence
2016
We examine the interplay between a person's individual preference and the social influence others exert. We provide a model of network relationships with conflicting preferences, where individuals are better off coordinating with those around them, but where not all have a preference for the same action. We test our model in an experiment, varying the level of conflicting preferences between individuals. Our findings suggest that preferences are more salient than social influence, under conflicting preferences: subjects relate mainly with others who have the same preferences. This leads to two undesirable outcomes: network segregation and social inefficiency. The same force that helps peopl…
Storia del Design | Per una didattica social
2018
I social network e in particolare fecebook possono oggi essere una fonte inesauribile di distrazione allo studio universitari come pure offrire allo studente – e al docente – inedite possibilità didattiche. Come ogni tecnologia, le "nuove tecnologie social" possono essere usate nel bene e nel male: come intriganti strumenti didattici o come autentici dispositivi di ludico autolesionismo. Il presente articolo mira a indagare i vantaggi di una didattica social perfino di una materia tanto "polverosa" come la storia (del design); ovvero: maggiore partecipazione, sollecitazione benefica, coinvolgimento emotivo e conseguente condivisione di testi, immagini e materiali audiovisivi.
The impact of user’s availability on On-line Ego Networks: a Facebook analysis
2016
We have defined and implemented a Facebook application to log a Facebook dataset.We have studied and validated the structural properties of the whole dataset and of the Dunbar ego networks.We have analyzed the interactions of the users.The availability of the users in the Dunbar ego networks have been investigated.Our results reveal the presence of the temporal homophily property in the Dunbar ego networks. Online Social Networks (OSNs) are the most popular applications in todays Internet and they have changed the way people interact with each other. Understanding the structural properties of OSNs and, in particular, how users behave when they connect to OSNs is crucial for designing user-c…
An analysis of ego network communities and temporal a affinity for online social networks
2017
The wide diffusion of Online Social Networks (OSNs) presents several advantages, like the definition of simple tools for information sharing and spreading. However, OSNs present also some drawbacks, one of the most important one is the problem of privacy disclosures. Distributed Online Social Networks (DOSNs), which decentralize the control of the social network, have been recently proposed to overcome these issues. The decentralization of the control has issued several challenges, one of the main ones is guaranteeing data availability without relying on a central server. To define users’ data allocation strategies, the knowledge of the structure of the ego network and of the user’ temporal…