104 resultados para social-proximity urban vehicular networks


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This study empirically tests the fundamental assumption that social networks are important to entrepreneurs. This assumption underpins most social network research conducted in the field of entrepreneurship and is seldom questioned. Empirical data were drawn from Australia’s participation in the Global Entrepreneurship Monitor project (GEM) from 2000- 2005 – an aggregate sample of 14,205 randomly selected Australians. The study demonstrated: (1) statistically significant differences in social networks when entrepreneurs and non-entrepreneurs are compared and (2) that the structural diversity of social networks changes during the entrepreneurial process. It was found that structural diversity was most important to entrepreneurs in the discovery stage, least important to entrepreneurs in the start-up stage and of medium importance to entrepreneurs in the young business stage.

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This research is an exploration of the place of religious beliefs and practices in the life of contemporary, predominantly Catholic, Filipinas in a large Quezon City Barangay in Metro Manila. I use an iterative discussion of the present in the light of historical studies, which point to women in pre-Spanish ‘Filipino’ society having been the custodians of a rich religious heritage and the central performers in a great variety of ritual activities. I contend that although the widespread Catholic evangelisation, which accompanied colonisation, privileged male religious leadership, Filipinos have retained their belief in feminine personages being primary conduits of access to spiritual agency through which the course of life is directed. In continuity with pre-Hispanic practices, religious activities continue to be conceived in popular consciousness as predominantly women’s sphere of work in the Philippines. I argue that the reason for this is that power is not conceived as a unitary, undifferentiated entity. There are gendered avenues to prestige and power in the Philippines, one of which directly concerns religious leadership and authority. The legitimacy of religious leadership in the Philippines is heavily dependent on the ability to foster and maintain harmonious social relations. At the local level, this leadership role is largely vested in mature influential women, who are the primary arbiters of social values in their local communities. I hold that Filipinos have appropriated symbols of Catholicism in ways that allow for a continuation and strengthening of their basic indigenous beliefs so that Filipinos’ religious beliefs and practices are not dichotomous, as has sometimes been argued. Rather, I illustrate from my research that present day urban Filipinos engage in a blend of formal and informal religious practices and that in the rituals associated with both of these forms of religious practice, women exercise important and influential roles. From the position of a feminist perspective I draw on individual women’s articulation of their life stories, combined with my observation and participation in the religious practices of Catholic women from different ethnic and socio-economic backgrounds, to discuss the role of Filipinas in local level community religious leadership. I make interconnections between women’s influence in this sphere, their positioning in family social relations, their role in the celebration of All Saints and All Souls Days in Metro Manila’s cemeteries and the ubiquity and importance of Marian devotions. I accompany these discussions with an extensive body of pictorial plates.

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This paper explores the activities of an Irish-led voluntary sector project that sought to minimise social isolation and build social networks among Irish elderly people living in a socio-economically deprived borough in South London, UK. The study from which this paper is drawn aimed to explore the nature and extent of unmet mental health needs among Irish pensioners. Using a naturalistic and exploratory design, data were collected through 19 semi-structured interviews, observation of project activities and analysis of members' case files. The paper presents findings in relation to the significant themes that emerged from the data analysis, which used a grounded theory approach. It discusses the social support systems within the project and examines the ways in which they maintained the mental wellbeing of the projects' members and interconnected with other areas of the project's activities. The study's findings demonstrated that the project provided space for social interaction among otherwise isolated Irish pensioners, many of whom experienced multiple morbidity. The project worked successfully to overcome the sense of stigma that prevented many of its members accessing statutory services; it also identified needs among carers. There was an Irish cultural ambience at the project centre, which generated a sense of belonging among members, and assisted in the development of social networks. The project initiated other forms of social support through the use of volunteers and developed befriending and telephone support services. The project developed partnership working with other agencies, particularly community mental health services, in order to provide support to elderly people who might otherwise have been institutionalised. The project engaged with the cultural norms of this marginalised white minority ethnic community to promote both social interaction and social networks. It offered a model of good practice for agencies working with isolated elderly members of minority ethnic communities.

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The key nodes in network play the critical role in system recovery and survival. Many traditional key nodes selection algorithms utilize the characters of the physical topology to find the key nodes. But they can hardly succeed in the mobile ad hoc network due to the mobility nature of the network. In this paper we propose a social-aware Kcore selection algorithm to work in the Pocket Switched Network. The social view of the network suggests the social position of the mobile nodes can help to find the key nodes in the Pocket Switched Network. The S-Kcore selection algorithm is designed to exploit the nodes' social features to improve the performance in data communication. Experiments use the NS2 shows S-Kcore selection algorithm workable in the Pocket Switched Network. Furthermore, with the social behavior information, those key nodes are more suitable to represent and improve the whole network's performance.

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This paper deploys notions of emergence, connections, and designs for learning to conceptualize high school students’ interactions when using online social media as a learning environment. It makes links to chaos and complexity theories and to fractal patterns as it reports on a part of the first author’s action research study, conducted while she was a teacher working in an Australian public high school and completing her PhD. The study investigates the use of a Ning online social network as a learning environment shared by seven classes, and it examines students’ reactions and online activity while using a range of social media and Web 2.0 tools.

The authors use Graham Nuthall’s (2007) “lens on learning” to explore the social processes and culture of this shared online classroom. The paper uses his extensive body of research and analyses of classroom learning processes to conceptualize and analyze data throughout the action research cycle. It discusses the pedagogical implications that arise from the use of social media and, in so doing, challenges traditional models of teaching and learning.

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This paper examines the experiences of selected academics pioneering e-learning in Malaysian tertiary institutions. It begins with an overview of the broad factors shaping the Malaysian educational environment and then proceeds to examine the experience of individual teachers and e-learning programs. It takes an in-depth qualitative approach to engaging with this case study material drawing heavily on semi-structured interviews with key actors.
Conversations with several respondents suggested that the social networks of mentor relations found in the Malaysian case studies might be aptly described as ‘bamboo networks’. Bamboo, which happens to be plentiful in the Malaysian peninsula where these case studies are based, spreads from clump to clump through a series of underground connections involving a mature clump of bamboo sending out a subterranean runner, often over very long distances that then emerge into the open as a new bamboo clump.
All of those interviewed reported that they have found it difficult to find a support base in their first years of pioneering online developments. Consequently, they tended to fall back on their peer networks linked to the institutions at which they had studied. Prominent individuals championing e-learning in the institutions where they teach tend to form small groups for information sharing and networking. They do look to their management for tacit ‘permission’ rather than direct encouragement. Consequently, the active promotion of e-learning in Malaysia can be described as being ‘middle-down’ rather than ‘top-down’ in nature. That is to say, it is mid-level teachers that inspire those below them to join in the development of e-learning programs. They are internally driven and strongly motivated. In time, their activity should produce new generations of locally developed e-learning experts but this has yet to take place in a substantial fashion. This study shows that both men and women ‘academic guanxi’, or peer networks, play a key role in the adoption of online technologies. Key early adopters become change-agents by inspiring a small network of their peers and via their guanxi networks. It was also discovered that motivation is not simply an individual matter but is also about groups and peer networks or communities of exchange and encouragement. In the development of e-learning in Malaysia, there is very little activity that is not linked to small clusters of developers who are tied into wider networks through personal contacts.
Like clumping bamboo, whilst the local clusters tend to be easily seen, the longer-range ‘subterranean’ personal connections are generally not nearly so immediately obvious. These connections are often the product of previous mentoring relationships, including the relationships between influential teachers and their former postgraduate students. These relationships tend to work like bamboo runners: they run off in multiple directions, subterranean and unseen and then throw up new clumps that then send out fresh runners of their own.

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The increasing research interest on stakeholder analysis in urban planning reflects a growing recognition that stakeholders can and should influence the decision-making. This paper concentrates on exploring the techniques for analysing stakeholders, especially the application of the Stakeholder Circle tool and Social Network Analysis. An urban renewal project and an infrastructure project in Australia are presented as case studies to verify the use of these two techniques. The stakeholders are identified and prioritized from two different points of view, namely, the attribute evaluations in the Stakeholder Circle tool, and the relationship network analysis. The paper ends with a discussion on the strengths and limitations of the techniques for stakeholder analysis. No method for stakeholder identification and prioritization is perfect. The selection of the approaches is an art with extensive considerations of ‘when, what, and how’ to choose methods to achieve the project objectives. Each method has its own strengths and limitations. Combining several methods when necessary is the best way to analyse stakeholders.

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The social interactions manifest in blogs by the network of comments left by owners and readers are an under-used resource, both for blog pundits and industry. We present a web-based feed reader that renders these relationships with a graph representation, and enables exploration by displaying people and blogs who are proximate to a user's network. Social Reader is an example of Casual Information Visualization, and aims to help the user understand and explore blog-based social networks in a daily, real-life setting. A six week study of the software involving 20 users confirmed the usefulness of the novel visual display, via a quantitative analysis of use logs, and an exit survey.

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Social networking has recently flourished in popularity through the use of social websites. Pervasive computing resources have allowed people stay well-connected to each other through access to social networking resources. We take the position that utilizing information produced by relationships within social networks can assist in the establishment of trust for other pervasive computing applications. Furthermore, we describe how such a system can augment a sensor infrastructure used for event observation with information from mobile sensors (ie, mobile phones with cameras) controlled by potentially untrusted third parties.

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A convergence of emotions among people in social networks is potentially resulted by the occurrence of an unprecedented event in real world. E.g., a majority of bloggers would react angrily at the September 11 terrorist attacks. Based on this observation, we introduce a sentiment index, computed from the current mood tags in a collection of blog posts utilizing an affective lexicon, potentially revealing subtle events discussed in the blogosphere. We then develop a method for extracting events based on this index and its distribution. Our second contribution is establishment of a new bursty structure in text streams termed a sentiment burst. We employ a stochastic model to detect bursty periods of moods and the events associated. Our results on a dataset of more than 12 million mood-tagged blog posts over a 4-year period have shown that our sentiment-based bursty events are indeed meaningful, in several ways.