OBJECTIVE To evaluate the technical competence of professionals carrying out activities related to contraceptive care. METHODS Evaluative research in the field of health was conducted in eight districts of the State of Ceara from July to September 2003. Data was collected by means of interviews with 29 nurses working in the Family Health Care Program within these districts and 50 people being...

We apply the concept of artificial and controlled interference in a two-hop relay network with an untrusted relay, aiming at enhancing the wireless communication secrecy between the source and the destination node. In order to shield the square quadrature amplitude-modulated (QAM) signals transmitted from the source node to the relay, the destination node designs and transmits artificial noise ...

The complexity of the software infrastructure of the information age is a significant issue affecting the security and economic viability of the U.S. Despite being of fundamental importance to the proper functioning of so much of our everyday life, these complex systems often exhibit bugs that cause system crashes and vulnerabilities to cyber attacks, such as Internet viruses and worms. As ever...

Wireless communication is ubiquitous in people’s daily life. As requirements for wireless continue to increase, how improve system performance has become a core issue that researchers pay attention to. cooperative considered be key technology the future because it can provide better quality, higher capacity, wider coverage, richer services, and high spectrum utilization efficiency. The proposed...

Objective: Cognitive neurophysiologic synchronies (NS) are low-level data streams derived from electroencephalography (EEG) measurements that can be collected and analyzed in near real time and in realistic settings. The objective of this study was to relate the expression of NS for engagement to the frequency of conversation between team members during Submarine Piloting and Navigation (SPAN) ...