170,281 research outputs found
Pornochanchando: em nome da moral, do deboche e do prazer (C. Bertolli Filho & M. Pessoa do Amaral)
No full textPornochanchando: em nome da moral, do deboche e do prazerOrganizadores: Cláudio Bertolli Filho e Muriel Emidio Pessoa do AmaralEditorial: Editora Cultura AcadêmicaAno: 2016Páginas: 312ISBN: 978-85-7983-796-
Pornochanchando: em nome da moral, do deboche e do prazer (C. Bertolli Filho & M. Pessoa do Amaral)
No full textPornochanchando: em nome da moral, do deboche e do prazerOrganizadores: Cláudio Bertolli Filho e Muriel Emidio Pessoa do AmaralEditorial: Editora Cultura AcadêmicaAno: 2016Páginas: 312ISBN: 978-85-7983-796-
Influence of severe thermal preconditioning on the bond between carbon FRCM and masonry substrate: Effect of textile pre-impregnation
No full textFabric-reinforced cementitious matrix (FRCM) composites often include polymer-impregnated bundles to improve the exploitation of the textile mechanical properties. However, organic components may degrade when exposed to elevated temperature. In this paper, the bond behavior of a carbon FRCM applied to a masonry substrate and exposed to a thermal preconditioning up to 300 °C for 250 min is investigated. Tensile tests on the textile and flexural and compression tests on the mortar matrix, as well as single-lap direct shear tests of FRCM-masonry joints with bare and impregnated textiles, are performed. Results show that the polymeric impregnation improves the mechanical properties of the FRCM even after thermal preconditioning
Fault tolerance for data parallel programs
No full textThe main issues when supporting fault tolerance based on checkpointing and rollback recovery for
High-Performance applications are related to the scalability of the introduced support, the possibility of
analyzing the induced overhead and, in more general terms, the optimization of the trade-off between
failure-free and recovery performances. In this paper we describe our contribution in fault tolerance for
high-level structured parallelism models. We take a different viewpoint w.r.t. existing contributions, by
introducing a methodology to derive interesting properties to support fault tolerance. We show how to
apply this methodology to a general data parallel model, deriving useful properties to introduce a class
of checkpointing protocols. Thanks to this methodology, this class of protocols is not affected by the
described issues. We exemplify two checkpointing protocols and the related rollback recovery techniques.
For each protocol we also derive cost models statically describing the failure-free performance, which can
be used for performance tuning or to target some Quality of Service parameter. To assess the innovation
of the results we analytically and experimentally compare the introduced protocols with two literature
protocols. Results show that while the protocols introduced in this paper permit the definition of cost
models and have a good scalability, the literature protocols do not always have these properties
Pornochanchando: em nome da moral, do deboche e do prazer (C. Bertolli Filho & M. Pessoa do Amaral)
No full textPornochanchando: em nome da moral, do deboche e do prazer
Organizadores: Cláudio Bertolli Filho e Muriel Emidio Pessoa do Amaral
Editorial: Editora Cultura Acadêmica
Ano: 2016
Páginas: 312
ISBN: 978-85-7983-796-
An integrated communication-computing solution in emergency management
No full textIn the last years an even more attention has been focused on emergency and crisis management systems. Both communication and computing aspects are of primary importance for a fast and reliable response in these particular scenarios. Differently from other approaches, in this paper we consider an integrated communication and computing solution, by proposing a joint approach, where a distributed computing platform and a heterogeneous meshed communication system interoperate in order to enhance the system reliability and readiness
Red-listed plants are contracting their elevational range faster than common plants in the European Alps
No full textMountain ecosystems are exposed to multiple anthropogenic pressures that are reshaping the distribution of plant populations. Range dynamics of mountain plants exhibit large variability with species expanding, shifting, or shrinking their elevational range. Using a dataset of more than 1 million records of common and red-listed native and alien plants, we could reconstruct range dynamics of 1,479 species of the European Alps over the last 30 y. Red-listed species were not able to track climate warming at the leading edge of their distribution, and further experienced a strong erosion of rear margins, resulting in an overall rapid range contraction. Common natives also contracted their range, albeit less drastically, through faster upslope shift at the rear than at the leading edge. By contrast, aliens quickly expanded upslope by moving their leading edge at macroclimate change speed, while keeping their rear margins almost still. Most red-listed natives and the large majority of aliens were warm-adapted, but only aliens showed high competitive abilities to thrive under high-resource and disturbed environments. Rapid upward shifts of the rear edge of natives were probably driven by multiple environmental pressures including climate change as well as land-use change and intensification. The high environmental pressure that populations encounter in the lowlands might constrain the ability of expanding species to shift their range into more natural areas at higher elevations. As red-listed natives and aliens mostly co-occurred in the lowlands, where human pressures are at their highest, conservation should prioritize low-elevation areas of the European Alps
Behavior of concrete beams reinforced with steel bars or thermoset and thermoplastic resin GFRP bars
No full textFiber-reinforced polymer (FRP) bars have peculiar mechanical and physical properties that make
them a viable alternative to traditional steel bars to reinforce concrete members, particularly in the
case of aggressive environments. GFRP bars can be made with thermosetting or thermoplastic resins.
While in the former case research has been done for several years, limited knowledge is available
regarding the behavior of concrete members reinforced with thermoplastic bars. In this paper, the
experimental behavior of concrete beams reinforced with steel and thermoset or thermoplastic GFRP
bars is compared, showing the effectiveness of both types of bar when adopted as internal
reinforcement
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