Abstract
The Dataflow execution model has been shown to be a good way of exploiting TLP, making parallel programming easier. In this model, tasks must be mapped to processing elements (PEs) considering the trade-off between communication and parallelism. Previous work on scheduling dependency graphs have mostly focused on directed a cyclic graphs, which are not suitable for dataflow (loops in the code become cycles in the graph). Thus, we present the SCC-Map: a novel static mapping algorithm that considers the importance of cycles during the mapping process. To validate our approach, we ran a set of benchmarks in on our dataflow simulator varying the communication latency, the number of PEs in the system and the placement algorithm. Our results show that the benchmark programs run significantly faster when mapped with SCC-Map. Moreover, we observed that SCC-Map is more effective than the other mapping algorithms when communication latency is higher. © 2012 IEEE.

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Abstract
The need for computer supported collaboration has grown over the last years and made collaboration an important factor within organizations. This trend has resulted in the development of a variety of tools and technologies to support he various forms of collaboration. Many collaborative processes, e.g. strategy building, scenario analysis, root cause analysis and requirements engineering, requires various collaboration support tools. Within these synchronous collaborative applications to create, evaluate, elaborate, discuss, and revise graphical models, e.g. data flow, fishbone and brainstorming diagrams, play an important role. Currently, the necessary tools are not integrated and flexible enough to support such processes. In this paper, we present a case study done to a synchronous collaborative brainstorming diagram editor - CLSD that is integrated in a flexible group support system. Our approach goes beyond the current state of the art as we can be seamlessly integrated with other collaboration support tools such as text-based brainstorming or voting.

Abstract
The new (e)commerce/(e)business paradigms forced enterprises to undertake important transformations and reorganizations. It happened with the web and will be repeated in the Cloud and social networks, following Eric Schmidt's (Google CEO) thoughts, "better thinking now on WWC - World Wide Computer, that is, what is behind u-commerce, ubiquity". The tourism is no more only a traditional commercial activity but ever more social- and information-oriented. The tourism services need to be effective to be aligned with tourist requirements. The globalization and easy access allows tourists to change their plans constantly. Dynamic services reconfiguration and resulting impact on their information systems need to be supported. The theme here presented explores new tourism services requirements as the ubiquity and dynamic reconfiguration, new brokering mechanisms, and reliable integration processes, and humanto-human synchronous collaboration allow the natural involvement of the tourist on the co-creation of his activity plan with other agents (humans). © 2012, IGI Global.