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Littérature scientifique sur le sujet « Correnti di perdita »
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Articles de revues sur le sujet "Correnti di perdita"
Naert, Frank. « The Rise and Decline of Interest Groups : A Dynamic Approach to Interest Groups ». Journal of Public Finance and Public Choice 10, no 2 (1 octobre 1992) : 183–93. http://dx.doi.org/10.1332/251569298x15668907539527.
Texte intégralDi Vito, Roberto, Cosima Posari, Silvia Bucco, Martina Camplese, Federica Giunta, Nicola Spetrino, Xhensila Grabocka et al. « Aspetti clinico-diagnostici e terapeutici nella gestione quotidiana dell'ipernatremia ». Giornale di Clinica Nefrologica e Dialisi 26, no 4 (29 septembre 2014) : 338–42. http://dx.doi.org/10.33393/gcnd.2014.934.
Texte intégralLeonardi, M., et T. Penco. « Indicazioni attuali dell'angiografia diagnostica. Considerazioni tecnico-metodologiche : Angiografia tradizionale e digitale ». Rivista di Neuroradiologia 1, no 3 (décembre 1988) : 251–55. http://dx.doi.org/10.1177/197140098800100307.
Texte intégralTriyana, Lily. « ASPEK YURIDIS PERJANJIAN BUSINESS FRANCHISE DI INDONESIA ». Yuriska : Jurnal Ilmiah Hukum 10, no 1 (4 février 2020) : 1. http://dx.doi.org/10.24903/yrs.v10i1.256.
Texte intégralTriana, Lily. « ASPEK YURIDIS PERJANJIAN BUSINESS FRANCHISE DI INDONESIA ». Yuriska : Jurnal Ilmiah Hukum 10, no 1 (25 février 2018) : 1. http://dx.doi.org/10.24903/yrs.v10i1.263.
Texte intégralRiggi, Carlo. « Sublimi azioni. Nota sulla Fotografia Transfigurativa ». PSICOTERAPIA PSICOANALITICA, no 2 (novembre 2022) : 134–40. http://dx.doi.org/10.3280/psp2022-002008.
Texte intégralDel Missier, Giovanni, et Laura Colautti. « Terapia del dolore ». Medicina e Morale 51, no 2 (30 avril 2002) : 255–60. http://dx.doi.org/10.4081/mem.2002.700.
Texte intégralVilla, G., M. Cappellini, V. Scardigli, P. Simonelli, S. Mangiafico, G. P. Giordano, A. Nori et al. « La Mielo-TC nelle lesioni post-traumatiche del plesso brachiale ». Rivista di Neuroradiologia 5, no 4 (novembre 1992) : 445–52. http://dx.doi.org/10.1177/197140099200500405.
Texte intégralNurman, Nicko. « PEMBENTUKAN PERSEKUTUAN PERDATA NOTARIS TERHADAP PELAKSANAAN JABATAN NOTARIS DALAM PERSPEKTIF PERUNDANG-UNDANGAN DI INDONESIA ». Legalitas : Jurnal Hukum 14, no 1 (7 juillet 2022) : 94. http://dx.doi.org/10.33087/legalitas.v14i1.313.
Texte intégralMICARELLI, A., A. CHIARAVALLOTI, O. SCHILLACI, F. OTTAVIANI et M. ALESSANDRINI. « La plasticità cerebrale correlata alle caratteristiche cliniche nella neuronite vestibolare acuta : una revisione della letteratura di neuroimaging ». Acta Otorhinolaryngologica Italica 36, no 2 (avril 2016) : 75–84. http://dx.doi.org/10.14639/0392-100x-642.
Texte intégralThèses sur le sujet "Correnti di perdita"
CARUSO, FRANCESCO. « Study of electrical conduction and defects in high-permittivity metal oxides : experiments and simulation ». Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/382298.
Texte intégralOriginally investigated in the electronic manufacturing to replace the SiO2 insulating layer, metal oxides are now extensively used as insulating or active layers in a multitude of electronics devices. It is known that the electrical properties are strongly correlated to atomic defects, which generate localized electronic states inside the band gap that act as charge traps. Therefore, the understanding of the physical mechanisms and the role of defects governing the charge transport in metal oxide stacks is of utmost importance for the optimization of nano-electronic devices. However, the charge transport and role of defects in metal oxides is still under debate and a complete and self-consistent understanding over large thickness, temperature and voltage regimes is not reached. In this thesis I investigated the conduction mechanisms in metal-insulator-metal (MIM) capacitors incorporating three model materials Al2O3, HfO2 and Al-doped-HfO2 (AlHfO) deposited by atomic layer deposition (ALD), in three different thicknesses 5, 10, and 20 nm. Furthermore, Hf-based oxides deposited using either water or ozone as ALD oxygen source, as well as AlHfO at two Al concentrations (5% and 17%) were analyzed. The aim of this study is to identify the charge traps properties of each material and investigate the path that electrons take within metal oxide dielectrics under applied electric field. Moreover, the impact of different manufacturing processes and film thicknesses on the material properties is discussed. Traps properties are extracted from experimental current-voltage characteristics of MIM capacitors, over a broad temperature and voltage regime, using a comprehensive charge transport model implemented in the Ginestra® (Applied Materials, Inc.) simulation software. Defects in Al2O3 are characterized by a thermal ionization energy ET≈3.5 eV below the dielectric conduction band minimum (CBM) and a relaxation energy EREL≈1 eV, in agreement with the ab-initio calculations of oxygen vacancies reported in literature. Two kinds of defects are identified in each 10 and 20 nm-thick Hf-based oxide, characterized by ET≈1.8eV for "shallow" traps, and ET≈3eV for "deep" traps. The use of water as oxygen source during the oxide ALD introduces fixed positive charges in the oxide. The introduction of Al atoms in HfO2 increases the oxide energy band gap, without significantly impacting on the density and properties of defects. The analysis allowed to identify the location of traps most involved in the conduction and the dominant transport mechanism in 20 nm-thick oxides, at each applied electric field. Despite the different properties, in each material transient displacement currents occur at low electric fields, originating from electron trapping and emission at traps near the metal/oxide interface. The transport of electrons through the oxide occurs only at higher electric fields, in two different ways. If a large density of traps is energetically located near the electrodes Fermi level (as in HfO2), the electrons tunnel from trap to trap until they reach the anode. Otherwise, when traps are closer to the conduction band (as in Al2O3 and AlHfO), the electrons tunnel from the cathode into one trap and then into the oxide conduction band, interacting only with traps near the cathode. These findings may have profound implications for the functional optimization of future nano-electronics devices. Furthermore, since in metal oxides trapping, defects generation and breakdown processes are strongly related, results can provide new insight in the breakdown process of metal oxides, impacting on device reliability.
CARFAGNA, EMILIO. « Indagine su nuove strategie di controllo per azionamenti elettrici ad alta velocità ». Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2022. http://hdl.handle.net/11380/1277906.
Texte intégralThe aim of this thesis was to investigate new control techniques for electric motors designed to work at high speed. This type of motor is characterized by high electrical frequencies and can be divided into: very high speed motors and motors with a high number of pole pairs. In the first case, the very high speed motor, is used, for example, for pumping and ventilation applications, while in the second case, the motor with a high number of pole pairs, for example the hybrid stepper (the motor usually has 50 teeth rotor blades), is used for positioning control. In the field of electric drives, standard control is based on a proportional regulator-integral on the current and speed loops, but when the motor is used at high speed the linear control becomes unstable in the presence of low switching frequency ratios fsw with respect to the electric frequency fel. A study on different control strategies to increase the bandwidth of the current loops was carried out for the hybrid stepper motors starting from the simulations in Plecs environment and concluding with the experimental tests carried out on an industrial setup. To increase the tolerance of the entire control system, the position sensor has been removed, for its sensitivity to noise, possible failures and higher costs. The work, for hybrid stepper motors, involved the development of sensorless control strategies for hybrid stepper motors by first closing the vector control with respect to the speed loop, and subsequently closing the position loop with an hybrid strategy comprising vector control (for medium and high speeds) and microstepping control (for low speeds and at standstill) to solve the observability problems electrical machines at low speeds. New sensorless control strategies are also presented for internal permanent magnet motors for low speed working region using low frequency signal injection to reduce acoustic noise respect to the classical high frequency one, and for the medium/high speed working region extending the use of stator flux observers commonly adopted for surface mounted permanent magnet motors. In addition to evaluations from a control point of view, a valid alternative for high-speed motors is the single stage Current Source Inverter (CSI). The CSI, compared to the more popular Voltage Source Inverters (VSI), intrinsically works as a boost allowing to work at high speed even with limited supply voltages, a very interesting aspect in aerospace and electric mobility applications. The activity on the converter involved the synthesis of a new control strategy to eliminate the converter prestage, the sensorless control using directly the voltage measurements and the extension of the speeds that can be reached considering the working region in low speed. Another aspect to consider, in the control of high speed machines, is the problem of iron losses in the ferromagnetic material which cause greater amplitudes of the currents, lower efficiency and decrease the output torque. The activity involved the synthesis of a new control strategy based on predictive control and the subsequent implementation in dSpace.
PANTINI, SARA. « Analysis and modelling of leachate and gas generation at landfill sites focused on mechanically-biologically treated waste ». Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2013. http://hdl.handle.net/2108/203393.
Texte intégralActes de conférences sur le sujet "Correnti di perdita"
Rossi, Gabriele, Massimo Leserri et Alma Benitez Calle. « Dry stone architecture : the survey as a tool to safeguard the risk of morphological or formal homologation ». Dans HERITAGE2022 International Conference on Vernacular Heritage : Culture, People and Sustainability. Valencia : Universitat Politècnica de València, 2022. http://dx.doi.org/10.4995/heritage2022.2022.15606.
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