24 documents found, page 1 of 3

Towards a digital twin for vineyard farms

Smart systems have increasingly sought more applications in agriculture. With the advent of climate change and the understanding on the impact that intensive agricultural practices have on the environment, a more responsible and precise use of resources has gained focus on the farming community. The design of a Digital Twin for horticulture that may be able to monitor plants growth, plants physiology and contro...

Tuning the 1H NMR paramagnetic relaxation enhancement and local order of [Aliqu...

Understanding the behavior of a chemical compound at a molecular level is fundamental, not only to explain its macroscopic properties, but also to enable the control and optimization of these properties. The present work aims to characterize a set of systems based on the ionic liquids [Aliquat][Cl] and [Aliquat][FeCl4] and on mixtures of these with different concentrations of DMSO by means of H-1 NMR relaxometr...

Hybrid Matched Filter Detection Spectrum Sensing

The radio frequency spectrum is getting more congested day by day due to the growth of wireless devices, applications, and the arrival of fifth generation (5G) mobile communications. This happens because the radio spectrum is a natural resource that has a restricted existence. Access to all devices can be granted, but in a more efficient way. To resolve the issue, cognitive radio technology has come out as a wa...

Reference Scenarios and Key Performance Indicators for 5G Ultra-dense Networks

The so-called 5G will revolutionize the way we live, and work. In order to demonstrate the profound changes, we can expect to experience within the next 5 to 10 years, we present use cases for the planned research within the TeamUp5G project. Some use cases are strongly linked to the network layer and aim at developing solutions capable of optimizing the main promising benefits of 5G: extremely low latency and ...

MARTINS, Miguel Gomes (2017), 1147, A conquista de Lisboa na rota da Segunda Cr...

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H-1 NMR relaxometry and diffusometry study of magnetic and nonmagnetic ionic li...

In this work, H-1 NMR relaxometry and diffusometry as well as viscometry experiments were carried out as a means to study the molecular dynamics of magnetic and nonmagnetic ionic liquid-based systems. In order to evaluate the effect of a cosolvent on the superparamagnetic properties observed for Aliquat-iron-based magnetic ionic liquids, mixtures comprising different concentrations, 1% and 10% (v/v), of DMSO-d6...

Magnetic Flux Density Distribution in the Air Gapof a Ferromagnetic Core With S...

The design of magnetic cores can be carried out bytaking into account the optimization of different parameters inaccordance with the application requirements. Considering thespecifications of the fast field cycling nuclear magnetic resonance(FFC-NMR) technique, the magnetic flux density distribution,at the sample insertion volume, is one of the core parametersthat needs to be evaluated. Recently, it has been sh...

Digital Control of a FFC NMR relaxometer

Design of Communication and Control for Swarms of Aquatic Surface Drones

The availability of relatively capable and inexpensive hardware components has made it feasible to consider large-scale systems of autonomous aquatic drones for maritime tasks. In this paper, we present the CORATAM and HANCAD projects, which focus on the fundamental challenges related to communication and control in swarms of aquatic drones. We argue for (i) the adoption of a heterogeneous approach to communica...

Design of Communication and Control for Swarms of Aquatic Surface Drones

The availability of relatively capable and inexpensive hardware components has made it feasible to consider large-scale systems of autonomous aquatic drones for maritime tasks. In this paper, we present the CORATAM and HANCAD projects, which focus on the fundamental challenges related to communication and control in swarms of aquatic drones. We argue for: (i) the adoption of a heterogeneous approach to communic...