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Crowdsourcing refers to a distributed problemsolving model in which a crowd of undefined size is engaged in the task of solving a complex problem through an open call. This novel problem-solving model found its way into numerous applications on the web for voting, fund-raising, micro-works and wisdom-of-the-crowd scenarios. On the other hand, the shift of desktop users to mobile platforms in the post-PC...
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With the prevalence of mobile computing systems and location based services, the research interest on spatio-temporal data has significantly increased, as evidenced by the collection of huge amounts of movement data. Consequently, this type of data raises several issues, namely in the research area of geographic information visualization. Despite the existence of several visual analysis techniques...
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Due to recent advances in communications and computing devices, vehicular networks are attracting a lot of research attention. In a vehicular ad hoc network the nodes are vehicles which communicate among themselves by using short-range wireless communications. These vehicles can store and share certain data (e.g., regarding the surrounding traffic and environment) which can be used, for example, to...
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For visually impaired users one of the major challenges is unassisted orientation and way-finding, especially in unexplored and potentially dangerous environments. The following work analyzes the issues stemmed from this problem and summarizes the merits and flaws of solutions available in literature. Afterwards, the research methodology is briefly described and the already achieved results are listed...
