Search results for "SOCIAL NETWORK"
showing 10 items of 537 documents
A network agent-based model of ethnocentrism and intergroup cooperation
2019
We present a network agent-based model of ethnocentrism and intergroup cooperation in which agents from two groups (majority and minority) change their communality (feeling of group solidarity), cooperation strategy and social ties, depending on a barrier of “likeness” (affinity). Our purpose was to study the model’s capability for describing how the mechanisms of preexisting markers (or “tags”) that can work as cues for inducing in-group bias, imitation, and reaction to non-cooperating agents, lead to ethnocentrism or intergroup cooperation and influence the formation of the network of mixed ties between agents of different groups. We explored the model’s behavior via four experiments in w…
Robust linear quadratic mean-field games in crowd-seeking social networks.
2013
We consider a social network where opinions evolve following a stochastic averaging process under the influence of adversarial disturbances. We provide a robust mean-field game model in the spirit of H∞-optimal control, establish existence of a mean-field equilibrium, and analyze its stochastic stability.
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…
Social Networks as an Approach to Systematic review
2019
Whether we are in the process of designing a new empirical study or our interest lies in conducting a review study, a solid literature review is needed to acquire an accurate idea of the current state of affairs with regard to a phenomenon of interest. Even if we can find contributions to the literature by entering keywords in search engines, we need tools that can help us to structure all the contributions encountered in terms of their interrelations and impact. This article presents social network analysis as such a tool. Although social network analysis is commonly thought of as a method in a particular empirical study, where individuals and groups of participants are studied, we can vie…
An Analysis of the Internal Organization of Facebook Groups
2019
With the rapid development and growth of online social networks (OSNs), researchers have been pushed forward to improve the knowledge of these complex networks by analyzing several aspects, such as the types of social media, the structural properties of the network, or the interaction patterns among users. In particular, a relevant effort has been devoted to the study and identification of cohesive groups of users in OSNs (also referred as communities) because they are the basic building block of each OSN. While several research works on groups in OSNs have mainly focused on identifying the types of groups and the contents created by their members, the analysis of internal organizations of …
Determinants of user behaviour and recommendation in social networks
2014
Purpose – The purpose of this paper is to analyse the determinants of social network use behaviour using Theory of Planned Behaviour (TPB) and Uses and Gratifications Theory. Design/methodology/approach – A quantitative study was carried out with data gathered by personal interview using a structured questionnaire. Relationships proposed in the theoretical model were estimated through structural equation models. In total, 811 users of social networks over 14 and residents in Spain were part of the sample. Findings – Results indicate that use attitude and the subjective norm, both TPB variables, directly and significantly influence social network loyalty. Thus, network loyalty can be achiev…
Subjectivity on the Web: The Case of Social Networks and the H1N1 emergency
2010
Blogs are extensively used for personal accounts and news reports. In particular, health blogs can be considered as both information sources and communication channels be- tween Science and Society, since they face the growing need for information among non-insiders. This study is concerned with the dimension of reality portrayed in blog comment en- tries; focusing particularly on participants'' representation of facts and their commit- ment to the truth of the proposition. The framework for this study has been shaped by the typologies in Chafe (1986), Willett (1988), Van der Auwera and Plungian (1998), Plungian (2001), Marìn (2002, 2004). Data are taken from three health and science we- bl…
The Influence of Social Vision, Social Networks, and Financial Return on Social SME Sustainability
2020
Social entrepreneurship is one of the catalysts of poverty reduction and sustainable development, but its impact in developing countries is not rapid in comparison to traditional entrepreneurship. The idea is to explain the phenomenon from an entrepreneurial perspective and to focus on entrepreneur sustainability. The data for this study was collected at the firm level with questionnaires through Qualtrics online survey platform. The structured questionnaires target the Social Micro, Small, and Medium-Sized Enterprises in Nigeria. This study provides a fundamental understanding of structural relationships that exist between the social vision, social network, financial return, innovation, an…