Comunicação cooperativa : uma alternativa para a resiliência em redes ad hoc sem fio

Afonseca, Ulisses Rodrigues

doi:10.26512/2015.11.t.19196

Cited by 2 publications

(3 citation statements)

References 26 publications

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“…A quimioterapia atinge tanto células neoplásicas quanto células saudáveis causando diversos efeitos colaterais como náusea e vômito, fadiga, alopecia, neurogenia, diarreia, constipação intestinal, alterações do sistema tegumentar e as neurotoxicidades 9 . Uma das formas de apresentação da neurotoxicidade é a neuropatia periférica 10 . As neuropatias provocam déficit de força muscular e diminuição da sensibilidade tátil e proprioceptiva nas mãos e pés 11 .…”

Section: Introductionunclassified

Avaliação Do Equilíbrio De Mulheres Com Câncer De Mama

et al. 2019

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The objective of this study was to verify the balance of women with breast cancer. This cross-sectional study, tested balance of 15women, eight women with cancer and seven without cancer. The evaluation was performed through the Mini Balance Evaluation Systems (MiniBESTest), TUG with simple and dual-task. The mean of age was 59.2 ± 5 years for cancer group and 60.2 ± 5 years for thecontrol group. Student's t-test for independent samples showed that there was no statistical differencebetween the groups for: MiniBESTest score, TUG with simple and dual-task. Women with cancer did not present balance impairments compared to control group according to MiniBESTest, and TUG with simple and dual-task.

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Section: Introductionunclassified

Avaliação Do Equilíbrio De Mulheres Com Câncer De Mama

et al. 2019

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“…Afonseca [1], dentro do contexto de redes ad hoc sem fio e RSSF, propõe duas soluções distribuídas que aplicam conhecimento localizado da topologia e permitem recuperar a conectividade da rede com objetivo de reforçar a conectividade por meio de enlaces cooperativos. A recuperação da conectividade é realizada em duas fases: a primeira consiste na localização de elementos críticos e biconectados; e a segunda pelo estabelecimento de enlaces cooperativos sobressalentes entre os componentes biconectados.…”

Section: Conectividade Em Uma Rssfunclassified

“…Existem outras técnicas, não ótimas, para a seleção dos nós auxiliares como, por exemplo, o Distance Based Helper Set Selection (DBHSS) [1] cuja idéia geral é adicionar a menor quantidade possível de nós ao conjunto de nós auxiliares, utilizando uma métrica simples, até que o enlace cooperativo seja estabelecido. O DBHSS tem como objetivo obter o valor mínimo da soma da distância entre os nós auxiliares e os nós de origem e destino.…”

Section: Seleção De Nós Auxiliaresunclassified

Modelos de comunicação cooperativa e equidade no consumo de energia em enlaces cooperativos aplicados à RSSF

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Wireless Sensor Networks (WSNs) are used to monitor the environment, such as fires in forests, seismic information or temperature. These networks consist of sensor nodes that are generally small in size, have limited radio range and operate by battery. Considering a multihop WSN, some sensors may not obtain a route to send the collected data due to limited transmission range, failure of nodes or links, external events or battery natural depletion. Recently, cooperative communication (CC) technique has been explored as an alternative to improve the signal to noise ratio. CC has also seen as an option for increasing connectivity, given its ability to increase the transmission. This increase is associated with the capacity of the source nodes to share resources from the physical layer thus obtaining the advantages of the MIMO systems (Multiple-Input Multiple-Output). Related works exploit the use of CC with intent to increase connectivity. However, these works aim at increase connectivity without concern with the cost to send the data to the sink node and the unavailability of nodes that have higher demand to establish CC links. This work aims to study the equity in the energy cost to establish CC links. This links are used to promote increase in connectivity and more efficient routes to the sink node. The first contribution of this work is to propose a mechanism to exploit CC to reduce the number of hops to reach the sink node and increase connectivity. The second contribution is to propose a CC model and a helper set selection heuristics which promove the energy balance by reducing the energy cost of the source nodes. Finally, we propose a helper set selection heuristic to establish energy balance CC links and increase connectivity. The proposed techniques presented connectivity gain up to 134% and established energy balance cooperative links which nodes have a difference in energy cost of only 8% in the evaluated scenarios.

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Comunicação cooperativa : uma alternativa para a resiliência em redes ad hoc sem fio

Cited by 2 publications

References 26 publications

Avaliação Do Equilíbrio De Mulheres Com Câncer De Mama

Avaliação Do Equilíbrio De Mulheres Com Câncer De Mama

Modelos de comunicação cooperativa e equidade no consumo de energia em enlaces cooperativos aplicados à RSSF

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