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Cognitive assessment in collaborative and social learning requires a broad perspective about learning and the involved processes. Assessment processes have a significant effect on collaborative learning because they engage learners through accountability and constructive feedback. However, in order to design a coherent and efficient assessment system for collaborative and social learning it is necessary...
Big Data Stream processing is among the most important computing trends nowadays. The growing interest on Big Data Stream processing comes from the need of many Internet-based applications that generate huge data streams, whose processing can serve to extract useful analytics and inform for decision making systems. For instance, an IoT-based monitoring systems for a supply-chain, can provide real...
Complex social networks are often arranged in communities of agents playing similar roles in the network, and detecting these communities can bring insights into the behaviour of such systems. Among many existing methods, a model of communication dynamics that involves exchange and agreement on shared words -- the Naming Game -- has been applied for community detection based on local interactions...
Despite of Cloud infrastructures can be used as High Performance Computing (HPC) platforms, many issues from virtualization overhead had kept them unrelated. However, with advent of container-based virtualizers, this scenario acquires new perspectives because this technique promises to decrease the virtualization overhead, achieving a near-native performance. In this work, we analyzed the performance...
This paper presents the concept and preliminary tests in FPGA of architecture for a flexible multicore microcontroller. It is aimed to intermediate complexity embedded applications. A previous exact characterize of the microcontroller model and its target applications is a costly time task, and depends mostly on the engineers' and programmers' experiences. The proposed architecture can aid the development...
In this paper, we propose and evaluate a parallel solution for the exact Multiple Sequence Alignment problem based on the A-Star algorithm. In our parallel solution, we use a multi-index data structure, templates and a locality-sensitive hash function. The results were collected in two machines (4 cores and 32 cores), with real and synthetic sequence sets ranging from 3 to 14 sequences. We show that...
This work aims to develop an Expert system (ES), which assists the user to have a control against floods and landslides in the watershed of the Itajaí-Açu River region. In Blumenau, mainly, the occurrence of this kind of disaster is common and the people need to have means to always be informed and to know how to act in this kind of situation. The Operation Center of Alert System Itajaí Basin (CEOPS)...
A Mobile Ad hoc Network (MANET) is a multihop wireless network in which the mobile nodes are dynamic in nature and has a limited bandwidth and minimum battery power. Due to this challenging environment the mobile nodes can be grouped into clusters to achieve better stability and scalability. Grouping the mobile nodes is called clustering, in which a leader node is elected to manage the entire network...
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