Keiko Verônica Ono Fonseca

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This work introduces the Distributed Network Reachability (DNR) algorithm, a distributed system-level diagnosis algorithm that allows every node of a partitionable arbitrary topology network to determine which portions of the network are reachable and unreachable. DNR is the first distributed diagnosis algorithm that works in the presence of network(More)
This paper presents HyperBone, an overlay network based on a virtual hypercube that offers services such as monitoring and routing, allowing the execution of distributed applications across the Internet. Hypercubes are scalable by definition, presenting several properties such as symmetry and logarithmic diameter, that are advantageous for distributed and(More)
An application based on open source resources was developed to allow remote operation of test instruments over the web. The application was deployed using Linux, Java and CamServ and shows a potential use as a didactic tool and also in laboratories dealing with different types of test instruments. The tool is an alternative to commercial applications used(More)
Growing concerns with environmental issues have led to the consideration of alternatives to urban mobility. Among available options, electric vehicles have been considered in advantage in terms of sustainability as well as emission of pollutants. This work presents an optimized solution to allocate electric charging stations based on a simplified traffic(More)
Growing concerns with environmental issues have resulted in alternatives for urban mobility and public transportation. Among the available options, battery-powered electric buses have been considered in terms of flexibility, sustainability, and emission of pollutants. These buses have a plug-in recharge system that allows them to run without any extra power(More)
This paper presents an autonomic monitoring strategy for highly-dynamic systems based on DiVHA - the distributed virtual hypercube algorithm. Hypercubes are scalable by definition, presenting several advantageous properties such as symmetry and logarithmic diameter. A system based on DiVHA keeps the hypercube properties even when the number of nodes is not(More)
Complex networks have been used to model public transportation systems (PTS) considering the relationship between bus lines and bus stops. Previous works focused on statistically characterize either the whole network or their individual bus stops and lines. The present work focused on statistically characterize different regions of a city (Curitiba, Brazil)(More)