resuMo Neste artigo procuramos analisar os modos e processo de aprendizagem de competências de literacia em saúde em contextos informais. Pretendemos ampliar a compreensão dos processos de aprendizagem para além dos contextos formais, contribuindo para a elucidação dos profissionais de saúde sobre a forma como os indivíduos adquirem e gerem o conhecimento em saúde. Face ao nosso objetivo, recor...

This paper analyzes the IEEE 802.11i wireless networking standard with respect to data confidentiality, integrity, mutual authentication, and availability. Under our threat model, 802.11i appears to provide effective data confidentiality and integrity when CCMP is used. Furthermore, 802.11i may provide satisfactory mutual authentication and key management, although there are some potential impl...

We prove Anderson localization in a disordered photonic crystal waveguide by measuring the ensembleaveraged extinction mean-free path, e, which is controlled by the dispersion in the photon density of states DOS of the photonic crystal waveguide. Except for the very low DOS case, where out-of-plane losses are non-negligible, e can be approximated to be the localization length . The extinction m...

Wireless mobile nodes have extremely limited resources and are easily vulnerable to Denial of Service (DoS) attacks. The traditional techniques that can detect or prevent DoS attacks in wired networks often require considerable resources such as processing power, memory, and storage space. Hence, it is not possible to deploy the traditional techniques on the wireless nodes. In this paper, we id...

Denial of service (DoS) attacks are a growing threat to the availability of Internet services. We present dFence, a novel network-based defense system for mitigating DoS attacks. The main thesis of dFence is complete transparency to the existing Internet infrastructure with no software modifications at either routers, or the end hosts. dFence dynamically introduces special-purpose middlebox dev...

The Rio dos Sinos watershed is located in the eastern region of the state of Rio Grande do Sul and includes 32 municipalities. These municipalities develop several different economic activities such as farming and livestock along the 190 km length of the Rio dos Sinos, one of the rivers with the worst quality of water in Brazil. The region is also characterised by growing urbanisation and heavy...

Phonon densities of states ~DOS! were obtained from inelastic neutron scattering measurements on Ce0.9Th0.1 at temperatures from 10 to 300 K. The a phase showed a significant softening of its phonon DOS when heated from 10 to 140 K. Despite the 17% volume collapse, the phonon DOS showed little change between the g phase at 150 K and the a phase at 140 K. This is supported by analysis of the mag...

Deuterium oxide dilution space (DOS) determination is one of the most accurate methods for in vivo estimation of ruminant body composition. However, the time-consuming vacuum sublimation of blood preceding infrared spectroscopy analysis, which is traditionally used to determine deuterium oxide (DO) concentration, limits its current use. The use of isotope-ratio mass spectrometry (IRMS) to deter...

The Internet has become a fertile ground for hostile activity. One of the simplest yet most effective attacks that can be launched over the network is a denial of service (DoS) attack. The most trivial form of a DoS attack floods the target with packets, causing congestion and consuming all available network resources. In order to employ massive attack power, the attacker usually launches a dis...

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