Ser-imagem – Além do selfie. A autorrepresentação fotográfica no Facebook

In a crescent connected and image-made society in various online social networks, each user taking pictures of him/herself and posting them on social online network, makes a self-registration that emerges in self-representation by aggregated daily practices of various themes. This research aims to study the dynamics of the relations of this photographic self-representation relations with agency, technology, affectivity, and consumption that goes beyond narcissism, composing a being integrated with the visual power and its reverberations, which I hereby call as Being -Image. The goal of this paper is an anthropological look over these practices. In this sense, I carry out the research developed in the field of image and cyber antropology with various interlocutors established in dialogues, analysis and virtual meetings. I tried, besides conversations and interviews, to analyze the profiles on the social network as well as daily posts, photo albums available on online network , sharings and mainly selfies.

El consumo tradicional de los nuevos medios. Análisis de la usabilidad de las publicaciones autóctonas para tableta en el contexto universitario español y brasileño

Esta investigación aborda el consumo que los jóvenes universitarios de España y Brasil realizan de las publicaciones para tabletas. A través del estudio de seis casos –las revistas españolas Don, VisàVis y Quality Sport, y los vespertinos brasileños O Globo a Mais, de Río de Janeiro; Estadão Noite, de Sao Paulo; y Diário do Nordeste Plus, de Fortaleza– se aplica una metodología cualitativa, el test de usabilidad, para detectar qué aspectos ralentizan y entorpecen la navegación en las nuevas generaciones de usuarios de medios móviles. A pesar de la influencia de las revistas impresas en la configuración de las publicaciones para tableta, los datos muestran que el usuario necesita “entrenarse” para conocer unas opciones de interacción a veces poco intuitivas o para las que carece de la madurez visual necesaria. Por ello las publicaciones más sencillas obtienen los mejores resultados de usabilidad.

Redes Sociais Pessoais e Mobilidade em Idosos

Objetivos: A investigação tem como objetivo geral analisar a associação entre a mobilidade nos idosos e as características estruturais, funcionais e relacionais-contextuais das suas redes sociais pessoais. Metodologia: No nosso estudo utilizámos o Instrumento de Análise da Rede Social Pessoal, IARSP, versão idosos (IARSP Idosos de Guadalupe & Vicente, 2012; Guadalupe, 2009), que permite caracterizar a rede social pessoal do individuo e uma questão do WHOQOL (OMS; Canavarro et al., 2006) para avaliar a perceção de mobilidade. Participantes: A amostra é constituída por 446 idosos com idades compreendidas entre os 65 anos e os 98 anos. Os participantes são na sua maioria do sexo feminino (63,9%; n = 285), casados (51,6%; n = 230) e com escolaridade (65,9%; n = 294). Resultados: Verifica-se que são os idosos do sexo feminino, os casados e com escolaridade, aqueles que apresentam uma média mais elevada de mobilidade percebida. Constata-se que existe uma maior proporção de idosos cuja mobilidade é “boa ou muito boa” (48,2%; n = 215) em comparação com os que têm uma mobilidade “nem boa nem má” (26,5%; n = 118) e com os que a mobilidade é “má ou muito má” (25,3%; n = 113). Quanto às características estruturais, os idosos que apresentam melhor mobilidade percebida têm uma média mais elevada na proporção das relações familiares nas redes (M = 77%), quanto às características funcionais, na companhia social (M = 2,37), apesar de não existirem diferenças significativas, e na reciprocidade de apoio (M = 3,53; p= 0,002), e consideram estar muito satisfeitos com a rede (M = 2,87, p= 0,059), quando tais características comparadas com as dos idosos com pior mobilidade. Verificam-se também diferenças entre as subamostras quer no apoio material e instrumental (M = 2,30; p = 0,013) e no apoio informativo (M = 2,44; p = 0,001), registando o grupo das pessoas com pior mobilidade as médias mais baixas. Quanto às características relacionais contextuais, na durabilidade das relações, os sujeitos com mobilidade “má ou muito má” apresentam uma média mais elevada (M = 42,41 anos; p = 0,025). Conclusão: Segundo a pior ou melhor mobilidade, é nas características funcionais que se assinalam as principais diferenças estatisticamente significativas, o que nos permitem afirmar uma associação entre mobilidade nos idosos e as relações interpessoais, pelo conteúdo das relações e pelo apoio que percecionam. Concluímos que os idosos que se consideram com melhor mobilidade apresentam, na generalidade, características de rede social mais positivas quando comparados com os que têm menor mobilidade percebida. /Objectives: The main goal of the research is to analyze the association between mobility in the elderly and the structural, functional and relational-contextual characteristics of their personal social networks. Methodology: In our study, we used the Social Personal Network Assessment Tool – IARSP , elderly version (IARSP-Idosos of Guadalupe Vicente, 2012; Guadalupe, 2009), enabling an individual's personal social network and a question of WHOQOL (WHO; Canavarro and such, 2006) to evaluate their perception of functionality of mobility. Participants: The study has 446 elderly participants aged between 65 years and 98 years. Participants are mostly female (63,9%; N = 285), married (51,6%; N = 230) and with education (65,9%; N = 294). Results: We found that older women, married and with education are those with a better mobility. It is noted that there is a greater proportion of elderly people whose mobility is "good or very good" (48.2%, n = 215) compared to those with a mobility "neither good nor bad" (26.5%, n = 118) and the mobility is "bad or very bad" (25.3%; n = 113). Regarding the structural characteristics, seniors who have better perceived mobility have a higher average in the proportion of family relationships in networks (M = 77%; p 0,331), and for the functional characteristics as social company (2, 37; p = 0,418), reciprocal support (3.53; p = 0.002), and satisfaction with their network (M = 2.87; p = 0.059) when these characteristics are compared with those of older people with poor mobility. Exist also statistically significant differences between subsamples either in the material and instrumental support (M = 2.30; p = 0.013) and informational support (M = 2.44; p = 0.001), recording the group of people with poorest mobility. For the relational and contextual characteristics, individuals with mobility "bad or very bad" have a higher mean durability of relationships (M = 42.41; p = 0.025). Conclusion: According to better or worse mobility, the functional characteristics indicates major differences between subsamples, that allow us to assert an association between mobility in the elderly and the content of interpersonal relationships, as well as the perception of support. We conclude that the elderly who consider themselves to have better mobility in general, have more positive social networking features when compared to those with lower perceived mobility.

Sosiaalisen median yksilöbrändin merkitys työnhaussa ja yritysten näkökanta työntekijän sosiaalisen median käyttäytymiselle

Työn tavoitteena oli tutkia, kuinka yksilön brändi muodostuu sosiaalisessa mediassa ja mitä sosiaalisen median kanavia suositaan työnhakijoiden ja yritysten keskuudessa. Haettiin myös alueellisilta yrityksiltä vastausta siihen, perehdyttävätkö he uusia työntekijöitä sosiaalisen median käyttäytymisessä. Tietolähteinä käytettiin brändin luomiseen ja sosiaalisen median strategiaan keskittyvää kirjallisuutta sekä yrityksien ja opiskelijoiden haastatteluja. Työn tuloksina todettiin suosituimmiksi kanaviksi itsensä markkinointiin verkostoitumispalvelu LinkedIn. Yritykset korostivat omien projektien merkitystä osaamisen näyttämisessä työnhaussa ja hyvin viestittyä persoonallisuutta hakemuksissa arvostettiin.

De volta para os braços da rainha dos céus: migração, memória e festa em Caicó/RN

The present work has as an objective to seize up some particular meanings of the Feast of Sant Ana (The saint which represents the city of Caicó/RN), a central event of the calendar festive-religious of that city, looking for to perceive on how it combines with the symbolic poles sacred: profane through the social bonds that are present there performed and expressed through the social networking and of local belongings. Such bond ties reveal themselves through a very especial manner, through the migration of returning to the feast, when collectively are produced and updated knowledge and codes that reinforce the representation of the local belonging, nominated as being caicoense . We seek on perceiving how the many events of this feast (from a perspective of a religious order as well as laic) acting on a conclusive way to an identity of the re-meaning of that city, especially in its relation with the migrant natives: the sons and daughters that return to the arms of Sant Ana

Revisión de la literatura sobre redes sociales y entrepreneurship

En este trabajo se realiza una revisión de la literatura reciente sobre las redes de emprendimiento. Desde una perspectiva instrumental, se pretende integrar las descripciones teóricas acerca de cómo el contenido y la estructura de las redes sociales contribuyen al éxito de la actividad del entrepreneur. Para tal efecto, esta revisión procede primero exponiendo los diferentes enfoques para el estudio de la relación entre las redes sociales y el proceso de emprendimiento. Posteriormente aborda las distintas definiciones y topologías existentes del concepto de red social de emprendimiento. En tercer lugar se exponen 5 modelos que explican la relación que existe entre las dinámicas de las redes y las etapas de evolución del proceso de emprendimiento; seguidamente este trabajo aborda el papel instrumental de las redes para los emprendedores en desarrollo de su actividad, concentrándose en explicar cómo los entrepreneurs usan las redes para obtener legitimidad social y cognitiva. El trabajo finaliza proponiendo algunas conclusiones y elementos a considerarse en investigaciones futuras.

Lo virtual en la era del autismo intelectual

El presente texto ofrece algunas reflexiones teóricas y visionesdel autor sobre la relación del hombre de hoy con el fenómeno dela comunicación digital, también conocida como comunicaciónvirtual, a través de Internet, unas reflexiones que aparecen deltrabajo investigativo sobre el modelo convergente del canalde televisión pública Telemedellín, y en las que se explora elpanorama de las relaciones del hombre con el otro, consigomismo y con las cosas, desde la mediación de la computadora.Por otro lado, indaga sobre la composición de las redes socialesy su producto, la comunidad virtual, lugar en el que se producenlos intercambios e interrelaciones humanas. Y finalmente,intenta mostrar el desasosiego del hombre de la época actual,encontrándolo como un ser solitario que lucha por un lugar enel mundo.

Social contact and trust: a study of a super diverse neighbourhood

This thesis presents an in-depth case study of a superdiverse neighbourhood in Glasgow where long-term white and ethnic minority communities reside alongside Roma migrants, asylum seekers and refugees, young professionals and other recent arrivals in traditional tenement housing. It focuses on the nature and extent of social contact and trust and on the role of context in shaping social relations. Employing the concepts of social milieu and intersectionality to identify social differences the research examines the relationships between five broad groupings of residents in the neighbourhood: Nostalgic Working Class, Scottish Asian, Liberal Homeowners, Kinship-sited Roma and Global Migrants. Ethnographic fieldwork was carried out in contexts within the neighbourhood, theorised as being potential sites for intergroup contact. Three types of interactions were examined: Group-based Interactions, Neighbour Interactions and Street Interactions. The data comprised documentary evidence, participant and direct observations, in-depth qualitative and walk-along interviews with residents and local organisations. Findings show that rather than individualising and isolating residents, superdiversity can stimulate community activism, yet there remains a preference for interaction within one’s own social milieu. The research has found that the concentration of poverty and material conditions has a more profound effect on social relations than historical diversity and the extent to which diversity is normalised within local discourses. Trust judgements in a superdiverse context may rely more on shared interests, moral outlook and assessments of the context rather than the extent of social contact. The quasi-private spaces of shared residential spaces and community activities can facilitate encounters with the potential to build trust, yet for this to occur cooperation through shared activities may not be sufficient. Interactions may need to move beyond co-presence and conviviality to increased understanding and empathy through dialogue. At an aggregate level, the extent to which superdiversity contributes to social contact and trust within the neighbourhood is strongly influenced by contextual factors and wider economic processes influencing housing tenure mix, private renting, property maintenance, residential churn and environmental conditions. Through examining different types of social contacts, the dynamics of trust as well as contextual influences, this thesis offers insights into the causal processes and factors that influence social relations at a local level.

e-Comunicação em espaço virtual

Relatório de estágio apresentado à Escola Superior de Educação do Instituto Politécnico de Santarém para obtenção do grau de mestre em Educação e Comunicação Multimédia

Preventing encrypted traffic analysis

Many existing encrypted Internet protocols leak information through packet sizes and timing. Though seemingly innocuous, prior work has shown that such leakage can be used to recover part or all of the plaintext being encrypted. The prevalence of encrypted protocols as the underpinning of such critical services as e-commerce, remote login, and anonymity networks and the increasing feasibility of attacks on these services represent a considerable risk to communications security. Existing mechanisms for preventing traffic analysis focus on re-routing and padding. These prevention techniques have considerable resource and overhead requirements. Furthermore, padding is easily detectable and, in some cases, can introduce its own vulnerabilities. To address these shortcomings, we propose embedding real traffic in synthetically generated encrypted cover traffic. Novel to our approach is our use of realistic network protocol behavior models to generate cover traffic. The observable traffic we generate also has the benefit of being indistinguishable from other real encrypted traffic further thwarting an adversary's ability to target attacks. In this dissertation, we introduce the design of a proxy system called TrafficMimic that implements realistic cover traffic tunneling and can be used alone or integrated with the Tor anonymity system. We describe the cover traffic generation process including the subtleties of implementing a secure traffic generator. We show that TrafficMimic cover traffic can fool a complex protocol classification attack with 91% of the accuracy of real traffic. TrafficMimic cover traffic is also not detected by a binary classification attack specifically designed to detect TrafficMimic. We evaluate the performance of tunneling with independent cover traffic models and find that they are comparable, and, in some cases, more efficient than generic constant-rate defenses. We then use simulation and analytic modeling to understand the performance of cover traffic tunneling more deeply. We find that we can take measurements from real or simulated traffic with no tunneling and use them to estimate parameters for an accurate analytic model of the performance impact of cover traffic tunneling. Once validated, we use this model to better understand how delay, bandwidth, tunnel slowdown, and stability affect cover traffic tunneling. Finally, we take the insights from our simulation study and develop several biasing techniques that we can use to match the cover traffic to the real traffic while simultaneously bounding external information leakage. We study these bias methods using simulation and evaluate their security using a Bayesian inference attack. We find that we can safely improve performance with biasing while preventing both traffic analysis and defense detection attacks. We then apply these biasing methods to the real TrafficMimic implementation and evaluate it on the Internet. We find that biasing can provide 3-5x improvement in bandwidth for bulk transfers and 2.5-9.5x speedup for Web browsing over tunneling without biasing.

Neural representations of social and non-social uncertainty in human decision making

The social landscape is filled with an intricate web of species-specific desired objects and course of actions. Humans are highly social animals and, as they navigate this landscape, they need to produce adapted decision-making behaviour. Traditionally social and non-social neural mechanisms affecting choice have been investigated using different approaches. Recently, in an effort to unite these findings, two main theories have been proposed to explain how the brain might encode social and non-social motivational decision-making: the extended common currency and the social valuation specific schema (Ruff & Fehr 2014). One way to test these theories is to directly compare neural activity related to social and non-social decision outcomes within the same experimental setting. Here we address this issue by focusing on the neural substrates of social and non-social forms of uncertainty. Using functional magnetic resonance imaging (fMRI) we directly compared the neural representations of reward and risk prediction and errors (RePE and RiPE) in social and non- social situations using gambling games. We used a trust betting game to vary uncertainty along a social dimension (trustworthiness), and a card game (Preuschoff et al. 2006) to vary uncertainty along a non-social dimension (pure risk). The trust game was designed to maintain the same structure of the card game. In a first study, we exposed a divide between subcortical and cortical regions when comparing the way these regions process social and non-social forms of uncertainty during outcome anticipation. Activity in subcortical regions reflected social and non-social RePE, while activity in cortical regions correlated with social RePE and non-social RiPE. The second study focused on outcome delivery and integrated the concept of RiPE in non-social settings with that of fairness and monetary utility maximisation in social settings. In particular these results corroborate recent models of anterior insula function (Singer et al. 2009; Seth 2013), and expose a possible neural mechanism that weights fairness and uncertainty but not monetary utility. The third study focused on functionally defined regions of the early visual cortex (V1) showing how activity in these areas, traditionally considered only visual, might reflect motivational prediction errors in addition to known perceptual prediction mechanisms (den Ouden et al 2012). On the whole, while our results do not support unilaterally one or the other theory modeling the underlying neural dynamics of social and non-social forms of decision making, they provide a working framework where both general mechanisms might coexist.

e-Comunicação em espaço virtual

Relatório de estágio apresentado à Escola Superior de Educação do Instituto Politécnico de Santarém para obtenção do grau de mestre em Educação e Comunicação Multimédia

Value creation through trust in technological-mediated social participation

In this article, we advocate for the use of a social-technical model of trust to support interaction designers in further reflecting on trust-enabling interaction design values that foster participation. Our rationale is built upon the believe that technological-mediated social participation needs trust, and it is with trust-enabling interactions that we foster the will for collaborate and share—the two key elements of participation. This article starts by briefly presenting a social-technical model of trust and then moves on with establishing authors rational that interconnects trust with technological-mediated social participation. It continues by linking the trust value to the context of design critique and critical design, and ends by illustrating how to incorporate the trust value into design. This is achieved by proposing an analytical tool that can serve to inform interaction designers to better understand the potential design options and reasons for choosing them.

Information and communication technologies in tourism: challenges and trends

The integration of Information and Communication Technologies (ICT) in the tourism industry is an essential element for the success of any tourism enterprise. ICTs provide access to information of tourism products from anywhere and at any time. Tour companies may also reach out to target customers around the world through a series of emerging technologies. This paper aims to make a review of the main key factors of ICT in Tourism. Aspects such as the quality of the website, Digital Marketing, Social Networking, Multimedia, Mobile Technologies and Intelligent Environments are discussed.

A influência das redes sociais na perceção e escolha de um destino turístico na Geração Y

As redes sociais têm potencial para influenciar os indivíduos nas suas escolhas. O objetivo deste estudo é perceber se as redes sociais têm influência na perceção e escolha de um destino turístico por parte dos utilizadores. No sentido de entender todo o processo de partilha de conteúdos por parte dos utilizadores online, no que toca à divulgação de destinos turísticos, foi escolhida como referência a maior rede social a nível mundial - o facebook. Foi adotada uma metodologia quantitativa, assente na construção de um questionário colocado online a cerca de 250 pessoas, utilizadores de facebook, de ambos os sexos, e com idades compreendidas entre os 16 e os 32 anos – Geração Y ou geração Millennium. Os dados recolhidos foram tratados e analisados com o auxílio do software SPSS e do Google Forms. Foi possível, nesta investigação, identificar a sensibilidade dos indivíduos face à partilha de conteúdos turísticos realizados por amigos, familiares e ícones nas redes sociais. Este estudo é importante no sentido em que as empresas ligadas ao sector podem incentivar os utilizadores a partilhar as suas férias e conteúdos na página da empresa e tornar-se, assim, numa estratégia de marketing potenciando quer a sua visibilidade organizacional, quer a do destino em causa.