Carlos Nunes

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In recent decades, both asthma prevalence and incidence have been increasing worldwide, not only due to the genetic background, but mainly because of the effect of a wide number of environmental and lifestyle risk factors. In many countries noncommunicable diseases, like asthma, are not yet considered a healthcare priority. This review will analyze and(More)
introduction Public administration includes many professions and occupations, each with its own set of ethical guidelines. In addition, they have to follow the code of professional ethics for public sector workers. These professionals, including those whose main occupation is to do scientific research, face complex ethical problems. These problems relate,(More)
This paper presents an overview of Brazilian Digital TV System (SBTVD), that is a modified version of the Terrestrial Integrated Service Digital Broadcasting (ISDB-T). It also presents the main properties of Orthogonal Frequency Division Multiplexing (OFDM) and the Peak-to-Average Power Ratio (PAPR). Large PAPR is one of drawbacks in OFDM system. Two(More)
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