This work investigates the use of electronic tongues for environmental monitoring. Electronic tongues were based on arrays of potentiometric sensors plus a complex data processing by artificial neural networks and data trmsmission by radiofrequency. A first application. in~ended for a system simulating real conditions in surface water, performed a simultaneous monitoring ofam~noniutn, potassium...

The stabilized zirconia with different Cu contents synthesized via sol- gel method. The samples were prepared by hydrolysis and condensation of orgnomatelic sol. After that the result gels were dried at 80 °C and then calcined at various temperatures.  ِ The differential thermal analysis (DTA), X-ray diffraction (XRD), field emission scanning electronic microscopy (FESEM) and transmission el...

We consider a signaling format where information is modulated via a superposition of independent data streams. Each data stream is formed by error-correction encoding, constellation mapping, replication and permutation of symbols, and application of signature sequences. The relations between data bits and the modulation symbols transmitted over the channel can be represented in the form of a sp...

Providing connectivity in scenarios where nodes present a very dynamic behavior is quite challenging due to resulting link intermittency among user devices. In such a challenged scenario, opportunistic contacts can be used to perform data forwarding. Moreover, as these moving nodes are carried by humans, taking into account the users' interests, social relationships, and mobility behavior may p...

Background. Mathematical models provide epidemiologists with powerful tools for quantitatively assessing the effectiveness of control methods and uncovering underlying mechanisms of observed infection data. One of the key parameters is the transmission rate. The transmission rate of many acute infectious diseases varies significantly in time, but the underlying mechanisms are usually uncertain....

The potential for increased transmission efficiency of military tactical command and control data links through voice/ data integration has increased in importance in recent years. With the introduction of even more sophisticated and automated weapons systems, the requirement for on-line exchange of data among tactically-embedded military computer systems has risen dramatically. Today we are fa...