Brane bounce-type configurations in a string-like scenario

Brane world six dimensional scenarios with string like metric has been proposed to alleviate the problem of field localization. However, these models have been suffering from some drawbacks related with energy conditions as well as from difficulties to find analytical solutions. In this work, we propose a model where a brane is made of a scalar field with bounce-type configurations and embedded in a bulk with a string-like metric. This model produces a sound AdS scenario where none of the important physical quantities is infinite. Among these quantities are the components of the energy momentum tensor, which have its positivity ensured by a suitable choice of the bounce configurations. Another advantage of this model is that the warp factor can be obtained analytically from the equations of motion for the scalar field, obtaining as a result a thick brane configuration, in a six dimensional context. Moreover, the study of the scalar field localization in these scenario is done.Comment: 15 pages, 5 figures. To appear in Physics Letters

Graviton resonances on two-field thick branes

This work presents new results about the graviton massive spectrum in two-field thick branes. Analyzing the massive spectra with a relative probability method we have firstly showed the presence of resonance structures and obtained a connection between the thickness of the defect and the lifetimes of such resonances. We obtain another interesting results considering the degenerate Bloch brane solutions. In these thick brane models, we have the emergence of a splitting effect controlled by a degeneracy parameter. When the degeneracy constant tends to a critical value, we have found massive resonances to the gravitational field indicating the existence of modes highly coupled to the brane. We also discussed the influence of the brane splitting effect over the resonance lifetimes.Comment: 15 pages, 8 figure

Cross-Cultural Validation of the Falls Efficacy Scale International in Elderly: Systematic Literature Review

The aim of this study is to describe the psychometric properties of cultural adaptations of the Falls Efficacy Scale International (FES-I) in the elderly dwelling in the community. A systematic literature review was performed according to the research question: What are the psychometric properties of the FES-I in the elderly dwelling in the community in different cultural backgrounds? The Population, Interest, Context (PICo) strategy was used for inclusion criteriadPopulation: elderly; Interest area/intervention: psychometric properties of the FES-I; Context: dwelling in the community in various cultural settings. The sample was made up of 10 articles. Metric properties have been evaluated by the criteria of validity, reproducibility, reliability, and responsiveness. The FES-I is considered acceptable, understandable to measure the fear of falling in the elderly, valid, reliable, and comparable cross-culturally, so it is recommended in rehabilitation research, clinical trials, clinical practice, and in fall-prevention programs in elderly.info:eu-repo/semantics/publishedVersio

Meta-pipeline: A new execution mechanism for distributed pipeline processing

The Caravela platform has been proposed by the authors of this paper to perform distributed stream-based computing on general purpose computation. This platform uses a secured execution unit called flow-model that prevents remote users to touch local information in a computer. The flow-model is assigned to local or remote processing units that execute its program. This paper is focused on a new execution mechanism that defines a pipeline composed by flow-models, called meta-pipeline, and is designed as a set of additional functions of the Caravela platform. The pipeline is executed automatically by the meta-pipeline runtime environment. This paper describes the execution mechanism and also presents an application example.info:eu-repo/semantics/acceptedVersio