Mediterranea University of Reggio Calabria , also referred to as Mediterranea University or University of Reggio Calabria, or simply UNIRC, is an Italian public research university, located in Reggio Calabria, Italy.It was founded in 1968, and is one of the youngest universities in the country. UNIRC combines its commitment in research and teaching: three faculties , are dedicated to the territory, creating a "Environment Polytechnic" with a strong propensity to the themes of architecture, landscape, urbanism, infrastructure associated at the green economy. The faculty of Law, study from the economic issues to those related to archeology and artistic heritage. The university provides undergraduate, graduate and post-graduate education, in addition to a range of double degree programs.The 2012 edition, of the ranking list of Italian public universities - written by the newspaper Il Sole 24 Ore - based on indicators of quality, puts Mediterranea University of Reggio Calabria, to first place in the South Italy and Insular Italy, and in particular, its school of architecture is one of the best in the country. Wikipedia.
Pucinotti R.,University of Reggio Calabria
Construction and Building Materials | Year: 2013
When the seismic assessment of existing RC structures is conduct, a fundamental aspects is the assessment of in situ concrete strength; in fact, the compressive strength assessment of concrete in existing buildings is conditioned by various factors which are difficult to quantify especially when dealing with poor quality concrete. In this paper a series of destructive laboratory tests on 359 cores, extracted from specimens realized ad hoc at the Laboratory for Materials and Structures of the Mediterranean University of Reggio Calabria and from nine existing structures (buildings, viaducts, bridges and tunnels) were performed with the purpose to estimating the characteristic strength of in situ concrete. Moreover, an analytical expression was proposed in order to estimate the in situ characteristic concrete compressive strength. The results of these applications were compared with those obtained by other equations available in technical literature showing that the proposed formulation is capable of provided a good estimate of the in situ characteristic concrete compressive strength. © 2013 Elsevier Ltd. All rights reserved.
Pezzimenti F.,University of Reggio Calabria
IEEE Transactions on Electron Devices | Year: 2013
The electrical characteristics of a normally off 4H-silicon carbide (SiC) bipolar-mode FET are investigated by means of a careful design activity and an intensive simulation study useful for a first-time-ever realization of this device in SiC. Specific physical models and parameters strictly related to the presently available 4H-SiC technology are taken into account. The device basically consists of a trench vertical JFET operating in the bipolar mode that takes full advantage of the superior material properties. A drain-current density up to 500 A/cm2, a forced current gain on the order of 50, and a specific on-resistance as low as 1.3 mΩ cm2 are calculated for a 1.3-kV blocking voltage device. The turn-off delay is on the order of a few nanoseconds. The presented analysis is supported by experimental results on the p-i-n diodes embedded in the device structure. © 1963-2012 IEEE.
Boccotti P.,University of Reggio Calabria
Ocean Engineering | Year: 2012
Some recent papers have dealt with the physics and expected performances of caisson breakwaters embodying a U-OWC: seawater flows in and out of these plants through a relatively small opening at the top of a vertical duct instead of entering through a large opening in a vertical wall, as in some conventional OWCs. Designing this and other wave energy converters is difficult for the simple reason that experience gained from similar plants built in the past cannot be exploited. Hence, there must be attempts to foresee the main phenomena that may occur in the plants lifetime, which is the first aim of this paper. The second aim is to suggest a holistic overview of the design of these converters. This means looking at the plant as a whole and considering all of the following aspects together: safety, performances (absorption of wave energy, production of electric power), extreme loads on the various walls, overall stability. © 2012 Elsevier Ltd.
Failla G.,University of Reggio Calabria
Archive of Applied Mechanics | Year: 2011
Euler-Bernoulli arbitrary discontinuous beams acted upon by static loads are addressed. Based on appropriate Green's functions here derived in a closed form, the response variables are obtained: (a) for stepped beams with internal springs, as closed-form functions of the beam discontinuity parameters, without enforcing neither internal nor boundary conditions; (b) for stepped beams with internal springs and along-axis supports, as closed-form functions of the unknown reactions of the along-axis supports only, to be computed by enforcing pertinent conditions. A remarkable reduction in computational effort is achieved, in this manner, compared to competing methods in the literature. © 2010 Springer-Verlag.
Atzori L.,University of Cagliari |
Iera A.,University of Reggio Calabria |
Morabito G.,University of Catania
IEEE Communications Magazine | Year: 2014
Social networking concepts have been applied to several communication network settings, which span from delay-tolerant to peer-to-peer networks. More recently, one can observe a flourish of proposals aimed at giving social-like capabilities to the objects in the Internet of Things. Such proposals address the design of conceptual (and software) platforms, which can be exploited to easily develop and implement complex applications that require direct interactions among objects. The major goal is to build techniques that allow the network to enhance the level of trust between objects that are "friends" with each other. Furthermore, a social paradigm could definitely guarantee network navigability even if the number of nodes becomes orders of magnitude higher than in the traditional Internet. Objectives of this article are to analyze the major opportunities arising from the integration of social networking concepts into the Internet of Things, present the major ongoing research activities, and point out the most critical technical challenges. © 1979-2012 IEEE.
Boccotti P.,University of Reggio Calabria
Ocean Engineering | Year: 2011
Profiles of exceptionally large waves in wind seas were obtained using a gauge array that was nearly aligned in the dominant wave direction; the length of these profiles ranged from 1.5 to 3.0 times the dominant wavelength. The profiles were also obtained through calculations using the quasi-determinism theory from the datasets of the sea states. The possibility to observe waves in the spacetime domain enables us to obtain a remarkable confirmation of the quasi-determinism theory. © 2011 Elsevier Ltd. All rights reserved.
Giuffre A.M.,University of Reggio Calabria
JAOCS, Journal of the American Oil Chemists' Society | Year: 2014
The wax ester composition of pressed olive oil and its variation during olive ripening were investigated by column chromatography/GC-on column technique. Six compounds were identified: C36, C38, C 40, C42, C44 and C46 wax esters, which were grouped as total detected wax esters (TDWEs). The European Union (EU) includes C40, C42, C44 and C46 waxes (TEWEs) as a distinctive characteristic between different categories, with a maximum total content ≤250 mg/kg for an extra virgin olive oil. The International Olive Council (IOC) includes C bsubesub waxes (TIOCWEs) as a purity parameter, with a maximum total content ≤150 mg/kg for an extra virgin olive oil. The analytical technique proposed by EU and IOC do not separate the wax esters from fatty acids esters with diterpenic alcohols (phytol and geranylgeraniol) that interfere with detected peaks. Although the examined cultivars were grown in the same geographical area and the same agricultural practices were applied to the trees, ANOVA analysis found significant differences among the oils extracted with the same machinery. The oil produced from the Itrana cultivar showed the lowest content in TEWEs (25.00-39.00 mg/kg) and in TIOCWEs (5.67-9.00 mg/kg). Wax content in Leccino and Pendolino cultivars showed a significant tendency to decrease during olive maturation, and a tendency to increase in all other cultivars from the first to the last harvest date when olive pigmentation changed from green to black. © 2014 AOCS.
Giuffre A.M.,University of Reggio Calabria
European Food Research and Technology | Year: 2013
With increasing concern for a demand from consumers for natural products, there is a wide interest in bioactive substances. The new frontier of dietary quality is the study and promotion of functional foods. Phenols are among the most important functional molecules. Red grape and red wine contain bioactive products as phenols. Changes occurring in the concentrations of phenols, such as hydroxycinnamic tartaric acids (hctas), flavonols, and anthocyanins in berry skins, were measured during growth and ripening of four red grape cultivars, Alicante, Black Malvasia, Nerello, and Prunesta (Vitis vinifera L.), cultivated in a coastal location of the Reggio Calabria Province (Southern Italy). These cultivars are the most popular and are considered to be the most suitable grape cultivars for cultivation in the Tyrrhenian side of the Reggio Calabria Province. Fractioning of three phenolic classes was conducted through the adsorbing resin Serdolit XAD-2. Each single phenolic fraction was analyzed by liquid chromatography with diode array detector (HPLC-DAD). Each cultivar presented a different chromatographic profile particularly for anthocyanins. The cultivar Nerello was distinguished from other for its high content of anthocyanins. The rate, at which the concentration of hctas, flavonols and anthocyanins increased, varied greatly among the cultivars. The hydroxycinnamic tartaric acid profile varied in the studied cultivars, in fact in Alicante, Black Malvasia and Prunesta cultivars, the predominant was trans-coumaroyl tartaric acid, while in Nerello cultivar, trans-caffeoyl tartaric acid was the most abundant. In addition, the results showed that amounts of phenolic compounds contained in grape skin changed throughout the grape ripening process. © 2013 Springer-Verlag Berlin Heidelberg.
Rosaci D.,University of Reggio Calabria
Knowledge-Based Systems | Year: 2012
The role of trust measures is particularly relevant in competitive multi-agent systems. Recent studies highlight the importance of correctly balancing direct measures, as the reliability, and indirect measures, as the reputation. The key problem is that an agent may have an insufficient direct knowledge of another agent, showing the necessity of using a reputation measure, computed using some "gossip" coming from other agents of the community. However, in a community consisting of competitive agents, an agent can show a fraudulent or misleading behaviour, to create problems to its competitors. Consequently when an agent has to select the most promising interlocutors, it should be capable to assign a suitable weight to the reputation with respect to the reliability. This weight strictly depends on the number of interactions that the two agents have executed in the past (a high value implies to give a preference to the reliability), as well as on other information that the agent can acquire about the agent community during its life. In this paper, we introduce a trust model for a competitive agent, that considers both the aforementioned issues to combine reliability and reputation, dynamically adapting the coefficient that represents the percentage of importance the agent assigns to the reliability with respect to the reputation. We have evaluated this model on the well-known ART platform, clearly showing that this dynamic adaptation leads to improve the agent performances with respect to use a static value for the coefficient above. © 2011 Elsevier B.V. All rights reserved.
Mortara G.,University of Reggio Calabria
International Journal for Numerical and Analytical Methods in Geomechanics | Year: 2010
This paper proposes a yield and failure criterion for cohesive and frictional materials. The function is given by the combination of a Lode dependence for the behaviour in the deviatoric plane and a meridian function for the pressure-dependent behaviour. A variety of shapes can be achieved with the proposed criterion including Lode dependences which are able to reproduce the behaviour of isotropic and cross-anisotropic materials in the deviatoric plane. The criterion is validated through the comparison with experimental data based on multiaxial experimental tests on clays, sands, rocks and concrete. Finally, the convexity of the criterion is analysed and discussed. © 2009 John Wiley & Sons, Ltd.