This article reviews the strides and challenges of the Brazilian Unified National Health System (SUS), based on an assessment of the results achieved and the constraints for effective consolidation of it objectives. The article focuses on three issues: the process of implementing the SUS, highlighting the institutional and political constraints, some of which as effects of previous policies; st...

We build culture-specific dialogue policies of virtual humans for negotiation and in particular for argumentation and persuasion. In order to do that we use a corpus of non-culture specific dialogues and we build simulated users (SUs), i.e. models that simulate the behavior of real users. Then using these SUs and Reinforcement Learning (RL) we learn negotiation dialogue policies. Furthermore, w...

To enable mobile stations (MSs) of secondary users (SUs) in cognitive radio (CR) networks sharing a common channel with MSs of primary users (PUs) is an important but challenging issue. In this paper, a cooperative spatial multiplexing (CSM) scheme is proposed, where base station (BS) in CR network has K antennas and each SU or PU has one antenna only, and BS supports PUs and SUs by K spatial c...

The pygmy hog, Sus salvanius, the smallest and rarest extant suid was first described as the only member of the genus Porcula. It is currently regarded as member of the genus Sus and a sister taxon of the domestic pig/Eurasian wild boar (Sus scrofa). Phylogenetic analyses of 2316 bp from three mtDNA loci (control-region, cytochrome b, 16S) by Bayesian inference and statistical testing of altern...

We propose a distributed spectrum access algorithm for cognitive radio relay networks with multiple primary users (PU) and multiple secondary users (SU) utilizing multiple antennas at their transmitter. The overlay model is considered, where the PUs allow spectrum access opportunities for the SUs, in exchange for the SUs cooperatively relaying the PUs’ data in exchange for both spectrum access ...

In this paper, we study a coalitional game approach to resource allocation in a multi-channel cooperative cognitive radio network with multiple primary users (PUs) and secondary users (SUs). We propose to form the grand coalition by grouping all PUs and SUs in a set, where each PU can lease its spectrum to all SUs in a time-division manner while the SUs in return assist PUs’ data transmission a...

Oneof themost efficientmethods to reduce the dropping andblockingprobabilities of the secondary users (SUs) in cognitive radio networks is channel sub-banding strategy. This means that when all the channels are occupied by the primary and secondary users, then the SUs’ channels can be divided into two sub-bands, and two SUs can use a subband, simultaneously. In this paper, we propose an opportu...

Sulfonylureas (SUs) have been available for the treatment of type 2 diabetes mellitus (T2DM) patients since 1950s and still occupy a central position in all international guidelines for diabetes management. With improved understanding of pathophysiology of T2DM and introduction of a number of newer oral agents, there is need to critically re-evaluate the effectiveness and safety of SUs, to asse...

In cognitive radio networks, there are scenarios where secondary users (SUs) utilize opportunistically the spectrum originally allocated to primary users (PUs). The spectrum resources available to SUs fluctuates over time due to PUs activity, SUs mobility and competition between SUs. In order to utilize these resources efficiently spectrum sharing techniques need to be implemented. In this pape...