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81.
We investigate how models for neutrino–nucleus cross sections based on different assumptions for the nuclear dynamics affect the forecasted sensitivities to neutrino oscillation parameters at future neutrino facilities. We limit ourselves to the quasi-elastic regime, where the neutrino cross sections can be evaluated with less uncertainties, and discuss the sensitivity reach to θ13 and δ at a prototype low-γ β-beam, mostly sensitive to the quasi-elastic regime. 相似文献
82.
Fernandez T. Garcia J.A. Tazon A. Mediavilla A. Pedro J.C. Garcia J.L. 《Electron Device Letters, IEEE》1999,20(11):557-559
In this work, a continuous nonlinear model for the Ids current source in recessed gate pseudomorphic HEMT heterostructures is proposed. A careful characterization of the DC, pulsed, and small-signal nonlinear distortion behaviour of this predominant nonlinearity has been employed in order to extract the model parameters. Being able to reproduce the current-voltage (I-V) behaviour as well as the higher order derivatives of the transconductance and output conductance, the equation is valid for an accurate control of the critical nonlinear distortion phenomena in HEMT applications. Comparisons between measured and simulated results prove its validity under both static and dynamic conditions for either large- or small-signal operation 相似文献
83.
Rodriguez-Garcia J.D. Guerra O. Roca E. Fernandez F.V. Rodriguez-Vazquez A. 《Electronics letters》1999,35(4):260-261
Circuit reduction is a fundamental first step in addressing the symbolic analysis of large analogue circuits. A new algorithm for simplification before generation is presented which is very efficient in terms of speed and the amount of circuit reduction, and solves the accuracy problems of previously reported approaches 相似文献
84.
The dynamics of a point-like relativistic particle with respect of the proper time is formulated on the hyperboloid p
2
0–p
2=M
2
c
2. The Hamilton-Jacobi equations on the hyperboloid are derived for the particles with mass (M
2=m
2, m>0), for the particles with zero-mass (M=0, m>0), and for the neutrino. It is shown, in a certain factorization of the momentum, the model can be identified with Nambu's three-dimensional phase space formalism. A first quantized version of the model is formulated according to a canonical scheme of quantization (Schrödinger quantization scheme). 相似文献
85.
An interior penalty method and a compact discontinuous Galerkin method are proposed and compared for the solution of the steady incompressible Navier–Stokes equations. Both compact formulations can be easily applied using high‐order piecewise divergence‐free approximations, leading to two uncoupled problems: one associated with velocity and hybrid pressure, and the other one only concerned with the computation of pressures in the elements interior. Numerical examples compare the efficiency and the accuracy of both proposed methods. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
86.
This article presents the first results of our study and experimentation with the new IPv6 IX-based address assignment model and its deployment in IXs where peering is organized around route servers. An IX model that identifies where the new IX customers can be located and how services like provider choice or multihoming can be offered is proposed. The article also describes the emulation environment that has been developed to easily create and experiment with complex IX scenarios without involving setup of costly configurations made of several pieces of equipment. This work has been carried out in the context of the European Union funded project Euro6IX. 相似文献
87.
M. J. Fernandez J. M. Casares E. Galvez P. Gmez-Sal R. Torres P. Ruiz 《Journal of heterocyclic chemistry》1992,29(7):1797-1804
A series of methyl-2,6-diaryl-1-methyl-4-oxopiperidine-3,5-dicarboxylates Ia-c and 2,4-diaryl-3,7-dimethyl-1,5-dimethoxycarbonyl-9-bispidinones IIa-c have been synthesized and studied by ir, 1H and 13C nmr spectroscopy and the crystal structure of methyl 2,4-diphenyl-3,7-dimethyl-9-oxo-3,7-diazabicyclo[3,3.1]nonane-1,5-dicarboxylate (IIa) has been determined by X-ray diffraction. The enolic form of compound Ia (I'a) was also studied. 相似文献
88.
Humberto César Chaves Fernandez José de Ribamar Silva Oliveira Attílio José Giarola 《Journal of Infrared, Millimeter and Terahertz Waves》1991,12(5):505-519
The Transverse Transmission Line method is used for the characterization of bilateral and unilateral finlines on a semiconductor substrate and in conjunction with the modal method, for the calculation of the scattering parameters due to a step discontinuity on a unilateral finline with a lossless dielectric substrate. Numerical results of the effective dielectric constant, attenuation constant and characteristic impedance for the bilateral and unilateral finlines on semiconductor substrates, and results of scattering parameters of a step discontinuity for unilateral finline, are presented. 相似文献
89.
Rafael Espin Eduardo Fernandez Gustavo Mazcorro Maria Ines Lecich 《European Journal of Operational Research》2007
The object of this paper is to provide a systematic treatment of bargaining procedures as a basis for negotiation. An innovative fuzzy logic approach to analyze n-person cooperative games is developed. A couple of indices, the Good Deal Index and the Counterpart Convenience Index are proposed to characterize the heuristic of bargaining and to provide a solution concept. The indices are examined theoretically and experimentally by analyzing three case studies. The results verify the validity of the approach. 相似文献
90.
H. Liu O. Vasquez V. R. Santiago L. Diaz F. E. Fernandez 《Journal of Electronic Materials》2004,33(10):1171-1175
VO2 thin films deposited on MgO and fused silica glass substrates were prepared by the pulsed laser deposition (PLD) technique,
which shows phase transition (PT) from the monoclinic semiconductor phase to a metallic tetragonal rutile structure at temperatures
over 68°C. The observed PT is reversible, showing a typical hysteresis. The PT can also be induced through optical pumping
by laser excitation. In this case, it was found that the optically induced PT is ultrafast and passive, but not thermally
initiated. In order to understand the PT mechanism, a study of transient holography using degenerate-four-wavemixing (DFWM)
measurement was conducted. A Nd:YAG pulsed laser with pulse duration of 30 psec operating at 532 nm was employed as the coherent
light source. This showed that the observed transient holography in VO2 thin film is associated with the excited state dynamical process, which essentially causes the structural change, or so-called
optically induced PT. The observed extremely large polarizability is believed to relate to the large offset in the potential
well minimum between the ground state and excited state. Through an unidentified intermediate state, the transient lattice
distortion triggered the structural change. 相似文献