Participação Social e Redes Sociais Pessoais de Idosos

Objetivo: O objetivo central deste estudo é caracterizar as redes sociais pessoais de indivíduos com idade igual ou superior a 65 anos, a nível estrutural, funcional e relacional-contextual, analisando-as segundo o nível de participação social dos idosos ao longo da sua vida em estruturas comunitárias ligadas ao lazer, cultura, desporto, religião e voluntariado. Metodologia: Para a avaliação das variáveis em estudo foram utilizados o Instrumento de Análise da Rede Social Pessoal, versão para idosos (IARSP – Idosos) (Guadalupe, 2010; Guadalupe & Vicente, 2012) para avaliar as dimensões da rede social pessoal, um questionário para caracterizar as variáveis sociodemográficas e a participação social e a Satisfaction With Life Scale – SWLS (Diener, 1985) que permite avaliar o grau de satisfação com a vida. Participantes: A amostra é constituída por 567 idosos, com uma média de idades de 75 anos (DP=7,6), entre os 65 anos e os 98 anos, maioritariamente do sexo feminino (63,0%), casados ou em união de facto (53,7%) e com escolaridade (69,8%), sobretudo ao nível do quarto ano (51,3%). A maioria dos idosos inquiridos não vive só (79,4%) numa zona de residência maioritariamente inserida em aglomerado populacional em região rural (57,0%) e não usufrui de qualquer tipo de apoio de resposta social (75,5%). Resultados: A amostra divide-se entre os que participaram comunitariamente ao longo da vida (47,8%; n = 271) e os que não participaram (52,2%; n = 296), sendo que entre os que participam 16,7% fazem-no com elevada frequência. Os idosos do sexo feminino, com idade igual ou inferior a 75 anos, casados, com habilitações literárias e que vivem acompanhados, são os que têm uma maior probabilidade de ter uma participação social mais ativa. Os idosos que apresentam participação social têm uma rede maior, com um membro a mais em média (M = 8,52 vs. 7,51, p = 0,027), e uma composição distinta dos que não participam, com menor peso das relações familiares (M = 72,61% vs. 80,81%, p < 0,001), maior peso e mais relações de amizade (M = 15,43% vs. M = 9,24%, p < 0,001) e maior presença de relações de trabalho (M = 1,11% vs. 0,13%, p = 0,006). Relativamente às características funcionais, podemos constatar que a reciprocidade de apoio é percebida como maior (p = 0,010) entre os idosos que participam comunitariamente, não se verificando diferenças noutras variáveis funcionais e relacionais-contextuais. O nível de participação e a satisfação com o nível de participação correlacionam-se positivamente com a satisfação percebida com a vida (p < 0,001). Conclusão: As conclusões apontam para um efeito da participação social ao longo da vida em estruturas comunitárias nas características estruturais das redes sociais pessoais dos idosos, não se verificando interferência na maioria das características funcionais e nas relacionais-contextuais. Verificámos ainda que há uma associação entre a participação social e a satisfação com a vida, sendo mais satisfeitos os que participam em estruturas comunitárias. É possível constatar que a rede daqueles que referem ter participação social é tendencialmente maior e heterogénea na composição, quando comparada com as redes dos sem participação social, assumindo, assim, relevância na estruturação de uma rede mais diversa e ampla, devendo ser estimulada no sentido de promover uma rede com recursos potencialmente positivos e um envelhecimento mais ativo. / Objectives: The central objective of this study is to characterize the personal social networks of the elderly, aged 65 years or more, analyzing them according to the level of social participation throughout their life in community structures related to leisure, culture, sports, religion and volunteering. Methodology: For the evaluation of the variables we used the Social Network Analysis Tool (IARSP-elderly) (Guadalupe, 2010; Guadalupe Vicente, 2012) to assess the dimensions of the social network; a questionnaire to evaluate social participation; and the Satisfaction With Life Scale SWLS – (Diener, 1985) to acess the degree of satisfaction with life. Participants: The sample consists of 567 elderly, with an average age of 75 years old (SD = 7,595), between 65 and 98 years old, mostly female (63.0 %), married (53.7%) with education (69.8%), mainly with the 4th grade (51.3%). Most of the respondents do not live alone (79.4%) in agglomerations in rural region (57.0%) and are not users of social services (75.5%). Results: The sample is divided between those who had community participation throughout life (47.8 %; n = 271) and those who did not participated (52,2%; n = 296). Between the first, 16.7% do it with high frequency. The elderly women, aged less than 75 years old, married, with educational qualifications and living not alone, are those who have a higher likelihood of having a more active social participation. The elderly that present social participation have a larger network, with one more member (M = 8,52 vs. 7,51, p = 0,027), and a composition distinct from not participating, with less proportion of family relations (M = 72,61% vs. 80,81%, p < 0,001), greater proportion and more friendships (M = 15,43% vs. M = 9,24%, p < 0,001) and greater presence of working relations (M = 1,11% vs. 0,13%, p = 0,006). Regarding the functional dimension, the reciprocity of support is perceived as higher (p = 0.010) among seniors participating in community and there were no differences in other functional and relational-contextual variables. The level of participation and satisfaction with the level of participation correlate positively with perceived satisfaction with life (p <0.001). Conclusion: The findings point to an effect of lifelong social participation in community in structural characteristics of personal social networks of the elderly, not verifying interference in most of the functional and the contextual-relational characteristics. We have also found that there is an association between social participation and life satisfaction, being more satisfied when they participate in community structures. The social network of the elderly who reported having social participation tends to be larger and heterogeneous in composition compared with those without social participation, thus assuming importance in structuring a more diverse and extensive network, should be encouraged in order to promote a network with potentially positive resources and a more active aging.

Rede Social Pessoal, Qualidade de Vida e Depressão em Idosos

Em Portugal e no Mundo Ocidental a população está a envelhecer, colocando esta nova realidade enormes desafios à sociedade. A sua crescente relevância deve-se sobretudo às consideráveis repercussões a nível pessoal, familiar, sociopolítico e económico e que afetam pessoas de todas as idades e a sociedade como um todo, colocando desafios específicos relativamente às relações interpessoais, à qualidade de vida e à saúde mental na pessoa idosa. Deste modo, o presente trabalho tem como objetivo analisar a associação entre a qualidade de vida, a depressão e as características das redes sociais pessoais dos idosos. Participaram no estudo 317 indivíduos, sendo 202 do sexo feminino e 115 do sexo masculino, com idade igual ou superior a 65 anos, com uma média de 77 anos (DP=7,57). Na recolha de dados recorremos a três instrumentos: Geriatric Depression Scale (GDS Short Form 15), (Yesavage et al., 1983; Almeida & Almeida, 1999); Instrumento de Avaliação de Qualidade de Vida da OMS (WHOQOL), (OMS, 1998; Canavarro et al., 2006); Instrumento de Avaliação das Redes Sociais Pessoais (IARSP – Idosos), (Guadalupe, 2010; Guadalupe & Vicente, 2012). Dos resultados destacamos que as características funcionais da rede social pessoal se diferenciaram de forma estatisticamente significativa entre as subamostras de idosos segundo os níveis de qualidade de vida percebida. Saliente-se que, além da relação significativa entre a depressão e qualidade de vida, em que os idosos com um nível mais baixo de qualidade de vida percebida apresentam maiores níveis de depressão (p<0,001), as características funcionais das redes sociais apresentam uma associação clara com a qualidade de vida (p<0,005) e a maioria com a depressão (p<0,014), o que não acontece com as estruturais e com as relacionais-contextuais. Outros resultados indicam que indivíduos com diferentes níveis de qualidade de vida percebida possuem uma estrutura idêntica da rede social pessoal. Ao nível da análise da associação entre as variáveis funcionais da Rede Social Pessoal, Qualidade de Vida e Depressão, o modelo analítico transmite-nos indicadores de investigação e intervenção precisos, o que demonstra a necessidade da continuidade e aprofundamento do presente estudo num âmbito amostral mais alargado e heterogéneo. / In Portugal and in the eastern world, the aging of population creates huge challenges to societies. It's growing relevance is owed to considerable repercussions on the personal, familiar, socio-politic and economic level that affect people of all ages and society as a whole, creating specific challenges regarding interpersonal relationships, quality of life and mental health of the elderly. The current work has the objective of analyzing the association between quality of life, depression and the characteristics of personal social networks of the elderly. 317 individuals have participated in this study, 202 female and 115 male, with age equal or above 65 years old, with an average of 77 years old (DP=7,57). We used three assessment instruments to collect data: Geriatric Depression Scale (GDS Short Form 15), (Yesavage et al., 1983; Almeida & Almeida, 1999); WHO’s Quality of Life Evaluation instrument (WHOQOL) (WHO, 1998; Canavarro et al., 2006); Personal Social Network Analysis Tool (IARSP-Elderly),(Guadalupe, 2010; Guadalupe & Vicente, 2012). The results show that the functional personal network characteristics are significantly different according to their level of quality of life. It should also be noted that not only there is a significant association between depression and quality of life, in which elderly people with a lower quality of life level show higher levels of depression (p<0,001), there is also a clear association between the functional social network characteristics and quality of life (p<0,005), and the majority with depression (p<0,014), which doesn’t happen with structural and relational-contextual social network characteristics. Other results indicate that different levels of quality of life acquire an identical social network structure. On the matter of association between the functional variables of social networks, quality of fife and depression, the analytic model shows precise indicators of research and intervention, which instills us a need to continue and enlarge this study with an wider and more heterogeneous sample.

SOCIAL STRUCTURE OF ASIAN ELEPHANTS (ELEPHAS MAXIMUS) IN SRI LANKA

Asian elephants (Elephas maximus) are critically endangered and live in fragmented populations spread across 13 countries. Yet in comparison to the African savannah elephant (Loxodonta africana), relatively little is known about the social structure of wild Asian elephants because the species is mostly found in low visibility habitat. A better understanding of Asian elephant social structure is critical to mitigate human-elephant conflicts that arise due to increasing human encroachments into elephant habitats. In this dissertation, I examined the social structure of Asian elephants at three sites: Yala, Udawalawe, and Minneriya National Parks in Sri Lanka, where the presence of large open areas and high elephant densities are conducive to behavioral observations. First, I found that the size of groups observed at georeferenced locations was affected by forage availability and distance to water, and the effects of these environmental factors on group size depended on site. Second, I discovered that while populations at different sites differed in the prevalence of weak associations among individuals, a core social structure of individuals sharing strong bonds and organized into highly independent clusters was present across sites. Finally, I showed that the core social structure preserved across sites was typically composed of adult females associating with each other and with other age-sex classes. In addition, I showed that females are social at all life stages, whereas males gradually transition from living in a group to a more solitary lifestyle. Taking into consideration these elements of Asian elephant social structure will help conservation biologists develop effective management strategies that account for both human needs and the socio-ecology of the elephants.

Automated Discovery of Social Networks in Online Learning Communities

As a way to gain greater insights into the operation of online communities, this dissertation applies automated text mining techniques to text-based communication to identify, describe and evaluate underlying social networks among online community members. The main thrust of the study is to automate the discovery of social ties that form between community members, using only the digital footprints left behind in their online forum postings. Currently, one of the most common but time consuming methods for discovering social ties between people is to ask questions about their perceived social ties. However, such a survey is difficult to collect due to the high investment in time associated with data collection and the sensitive nature of the types of questions that may be asked. To overcome these limitations, the dissertation presents a new, content-based method for automated discovery of social networks from threaded discussions, referred to as ‘name network’. As a case study, the proposed automated method is evaluated in the context of online learning communities. The results suggest that the proposed ‘name network’ method for collecting social network data is a viable alternative to costly and time-consuming collection of users’ data using surveys. The study also demonstrates how social networks produced by the ‘name network’ method can be used to study online classes and to look for evidence of collaborative learning in online learning communities. For example, educators can use name networks as a real time diagnostic tool to identify students who might need additional help or students who may provide such help to others. Future research will evaluate the usefulness of the ‘name network’ method in other types of online communities.

Modeling the Network of Dutch and Flemish Print Production, 1550-1750

The production of artistic prints in the sixteenth- and seventeenth-century Netherlands was an inherently social process. Turning out prints at any reasonable scale depended on the fluid coordination between designers, platecutters, and publishers; roles that, by the sixteenth century, were considered distinguished enough to merit distinct credits engraved on the plates themselves: invenit, fecit/sculpsit, and excudit. While any one designer, plate cutter, and publisher could potentially exercise a great deal of influence over the production of a single print, their individual decisions (Whom to select as an engraver? What subjects to create for a print design? What market to sell to?) would have been variously constrained or encouraged by their position in this larger network (Who do they already know? And who, in turn, do their contacts know?) This dissertation addresses the impact of these constraints and affordances through the novel application of computational social network analysis to major databases of surviving prints from this period. This approach is used to evaluate several questions about trends in early modern print production practices that have not been satisfactorily addressed by traditional literature based on case studies alone: Did the social capital demanded by print production result in centralized, or distributed production of prints? When, and to what extent, did printmakers and publishers in the Low countries favor international versus domestic collaborators? And were printmakers under the same pressure as painters to specialize in particular artistic genres? This dissertation ultimately suggests how simple professional incentives endemic to the practice of printmaking may, at large scales, have resulted in quite complex patterns of collaboration and production. The framework of network analysis surfaces the role of certain printmakers who tend to be neglected in aesthetically-focused histories of art. This approach also highlights important issues concerning art historians’ balancing of individual influence versus the impact of longue durée trends. Finally, this dissertation also raises questions about the current limitations and future possibilities of combining computational methods with cultural heritage datasets in the pursuit of historical research.

The mosaic of habitats of the Seine estuary: Insights from food-web modelling and network analysis

Ecological network analysis was applied in the Seine estuary ecosystem, northern France, integrating ecological data from the years 1996 to 2002. The Ecopath with Ecosim (EwE) approach was used to model the trophic flows in 6 spatial compartments leading to 6 distinct EwE models: the navigation channel and the two channel flanks in the estuary proper, and 3 marine habitats in the eastern Seine Bay. Each model included 12 consumer groups, 2 primary producers, and one detritus group. Ecological network analysis was performed, including a set of indices, keystoneness, and trophic spectrum analysis to describe the contribution of the 6 habitats to the Seine estuary ecosystem functioning. Results showed that the two habitats with a functioning most related to a stressed state were the northern and central navigation channels, where building works and constant maritime traffic are considered major anthropogenic stressors. The strong top-down control highlighted in the other 4 habitats was not present in the central channel, showing instead (i) a change in keystone roles in the ecosystem towards sediment-based, lower trophic levels, and (ii) a higher system omnivory. The southern channel evidenced the highest system activity (total system throughput), the higher trophic specialisation (low system omnivory), and the lowest indication of stress (low cycling and relative redundancy). Marine habitats showed higher fish biomass proportions and higher transfer efficiencies per trophic levels than the estuarine habitats, with a transition area between the two that presented intermediate ecosystem structure. The modelling of separate habitats permitted disclosing each one's response to the different pressures, based on their a priori knowledge. Network indices, although non-monotonously, responded to these differences and seem a promising operational tool to define the ecological status of transitional water ecosystems.

Credible Commitments and Post-Conflict Refugee Return: A Statistical and Network Analysis

I examine determinants of refugee return after conflicts. I argue that institutional constraints placed on the executive provide a credible commitment that signals to refugees that the conditions required for durable return will be created. This results in increased return flows for refugees. Further, when credible commitments are stronger in the country of origin than in the country of asylum, the level of return increases. Finally, I find that specific commitments made to refugees in the peace agreement do not lead to increased return because they are not credible without institutional constraints. Using data on returnees that has only recently been made available, along with network analysis and an original coding of the provisions in refugee agreements, statistical results are found to support this theory. An examination of cases in Djibouti, Sierra Leone, and Liberia provides additional support for this argument.

O processo de organização social do Grupo Herança Viva de Chapecó-SC e suas estratégias de ação conjunta

The consequences resulting from economic modernization model generated social and environmental imbalances, resulting in the exclusion and social isolation, perceived consequences in the agricultural sector. When studying social organizations, tends to see how they keep their forward cooperation processes all a company incorporated by the appreciation of individualism and competition. The overall objective for this research was to analyze the organizational dynamics of Agroecology Group Heritage Viva Chapecó, Santa Catarina, in order to identify the strengths and threats and collaborate in this way for preparation of action strategies for sustainability. The selected group is based on the principles of agroecology for the conduct of their agricultural production systems, avoiding the use of agrochemicals, proven through the use of participatory certification seal Ecovida Network, and the products sold mainly in street fairs in the city of chapecó. To fulfill such a proposal were consulted the minutes of meetings and questionnaires with farmers to assess the dynamics of cooperation among its members, through the understanding of their social capital and social network analysis (SNA). To extend the study of the group and its members was adopted methodological approach of action research where activities were developed to identify strengths and weaknesses and contribute to its organizational restructuring, resulting in the construction, carried out by farmers, the guiding principles of the Living Heritage Group will contribute to the decision-making and strengthen their identity. The survey also brought the group is inserted in the Social Transition Agroecology therefore change the current paradigm is not inserted only in the alternative model of production, but in the form of organization of social actors and their role in the marketing process of their products, in discussing the scenario of food supply chains.

On-light: optical social network

Social networks are a recent phenomenon of communication, with a high prevalence of young users. This concept serves as a motto for a multidisciplinary project, which aims to create a simple communication network, using light as the transmission medium. Mixed team, composed by students from secondary and higher education schools, are partners on the development of an optical transceiver. A LED lamp array and a small photodiode are the optical transmitter and receiver, respectively. Using several transceivers aligned with each other, this con guration creates a ring communication network, enabling the exchange of messages between users. Through this project, some concepts addressed in physics classes from secondary schools (e.g. photoelectric phenomena and the properties of light) are experimentally veri ed and used to communicate, in a classroom or a laboratory.

Network analysis approach to find new candidate genes and pathways involved in the pathophysiology of familial hypercholesterolemia

Still a big gap exists between clinical and genetic diagnosis of dyslipidemic disorders. Almost the 60% of the patients with a clinical diagnosis of Familial hypercholesterolemia (FH) still lack of a genetic diagnosis. Here we present the preliminary results of an integrative approach intended to identify new candidate genes and to dissect pathways that can be dysregulated in the disease. Interesting hits will be subsequently knocked down in vitro in order to evaluate their functional role in the uptake of fluorescently-labeled LDL and free cell cholesterol using automated microscopy.

A Retrospective Socio-Semantic Analysis of the PRO-VE Conferences

Part 19: Knowledge Management in Networks

Text watermarking e Social Network: uno studio sperimentale

La diffusione dei Social Network ha portato alla necessità di utilizzare tecniche per fare copyright e autenticazione dei file su di essi diffusi. Viene presentato un metodo di watermarking testuale basato sulla sostituzione dei caratteri omoglifi e studiato nell'ambiente dei Social Network. E' stata posta particolare attenzione sulla possibilità che questi adottino già tecniche di watermarking testuale e successivamente sono state studiate le potenzialità dell'algoritmo proposto sulle diverse piattaforme, valutandone la percentuale di successo, la robustezza e l'invisibilità.

Social network e watermarking: alcuni risultati preliminari

La diffusione dei social network ha permesso ad un elevato numero di persone di condividere i propri contenuti multimediali (testo, foto, video) con una larga platea di contatti. Potenzialmente questi contenuti possono essere condivisi anche con persone non direttamente collegate al proprietario. Uno dei comportamenti più diffuso degli utenti dei social network è la condivisione di foto. In questo contesto diventa importante riconoscere e preservare la proprietà di un'immagine. Lo studio effettuato in questo documento quindi, si prefigge lo scopo di controllare se i social network inseriscano un qualche watermark all'interno dell'immagine caricata. L'elaborato inoltre cerca di capire, analizzando e testando vari algoritmi di watermarking su immagini condivise, come le firme digitali vengano inserite all'interno di una foto e come queste rispondano alle alterazioni da parte dei social network.