198,825 research outputs found
La crisi della funzione giurisdizionale e l’espansione del potere dei giudici
No full textL'intervento si snoda lungo due direttrici, ossia l’espansione del potere dei giudici e la crisi della funzione giurisdizionale. In particolare, per quanto riguarda la prima, si sottolinea che, nonostante la storia ci insegna che la separazione dei poteri dello Stato è un portato di civiltà e di democrazia, si assiste attualmente alla parabola dalla separazione dei poteri dello Stato alla indistinzione degli stessi; la seconda direttrice è strettamente collegata alla prima, perchè l’espansione del ruolo dei giudici produce, come conseguenza, una crescente inefficacia del sistema giudiziario e durate irragionevoli dei processi
Mapping the spatial variation of soil moisture at the large scale using GPR for pavement applications
No full textThe characterization of shallow soil moisture spatial variability at the large scale is a crucial issue in many research studies and fields of application ranging from agriculture and geology to civil and environmental engineering. In this framework, this work contributes to the research in the area of pavement engineering for preventing damages and planning effective management. High spatial variations of subsurface water content can lead to unexpected damage of the load-bearing layers; accordingly, both safety and operability of roads become lower, thereby affecting an increase in expected accidents. \ud
A pulsed ground-penetrating radar system with ground-coupled antennas, i.e., 600-MHz and 1600-MHz center frequencies of investigation, was used to collect data in a 16 m × 16 m study site in the Po Valley area in northern Italy. Two ground-penetrating radar techniques were employed to non-destructively retrieve the subsurface moisture spatial profile. The first technique is based on the evalu¬ation of the dielectric permittivity from the attenuation of signal amplitudes. Therefore, dielectrics were converted into moisture values using soil-specific coefficients from Topp’s relationship. Ground-penetrating-radar-derived values of soil moisture were then compared with measurements from eight capacitance probes. The second technique is based on the Rayleigh scattering of the signal from the Fresnel theory, wherein the shifts of the peaks of frequency spectra are assumed comprehensive indi¬cators for characterizing the spatial variability of moisture. Both ground-penetrating radar methods have shown great promise for mapping the spatial variability of soil moisture at the large scale
M. Cappelletti, Giudici irresponsabili ? Studio comparativo sulla responsabilité dei giudici
No full textM. Cappelletti, Giudici irresponsabili ? Studio comparativo sulla responsabilité dei giudici. In: Revue internationale de droit comparé. Vol. 40 N°2, Avril-juin 1988. p. 494
M. Cappelletti, Giudici irresponsabili ? Studio comparativo sulla responsabilité dei giudici
No full textM. Cappelletti, Giudici irresponsabili ? Studio comparativo sulla responsabilité dei giudici. In: Revue internationale de droit comparé. Vol. 40 N°2, Avril-juin 1988. p. 494
Prime order derangements in primitive permutation groups
No full textAbstractLet G be a transitive permutation group on a finite set Ω of size at least 2. An element of G is a derangement if it has no fixed points on Ω. Let r be a prime divisor of |Ω|. We say that G is r-elusive if it does not contain a derangement of order r, and strongly r-elusive if it does not contain one of r-power order. In this note we determine the r-elusive and strongly r-elusive primitive actions of almost simple groups with socle an alternating or sporadic group
Fast representation of dipole-dipole geoelectrical data with pseudosections for regional surveys
No full textI propose a fast method for constructing pseudosections of apparent resistivity from geoelectrical data collected for deep studies with continuous polar dipole-dipole arrays. Once a vertical section is fixed, each value of apparent resistivity is assigned to a point on the section and finally pseudosections are obtained by interpolation. This allows the geophysicist to represent a large amount of data in a fast and simple way, to perform a qualitative interpretation and to facilitate the quantitative interpretation
Integrated geoelectrical and magnetotelluric exploration at Gran Sasso d'Italia range (Central Apennines)
No full textWe carried out three electrical soundings, with continuous polar dipole-dipole array, and three magnetotelluric stations at Gran Sasso d'Italia, in the area of Campo Imperatore. Geoelectrical data show the existence of a resistive background with exceptionally high values of resistivity (greater than 25000 ? m) at a depth of about 250 m. The magnetotelluric data were used to constrain the thickness of this resistive layer, below which we find an intermediate conductive structure and a deeper resistive background. The geological interpretation of this result is still open to discussion, but we can exclude that the shallow resistive layer consists of Cretaceous limestones, since their resistivity has been estimated to be about 5000 ? m
Modeling Water Flow in Variably Saturated Porous Soils and Alluvial Sediments
No full textThe sustainable exploitation of groundwater resources is a multifaceted and complex problem, which is controlled, among many other factors and processes, by water flow in porous soils and sediments. Modeling water flow in unsaturated, non-deformable porous media is commonly based on a partial differential equation, which translates the mass conservation principle into mathematical terms. Such an equation assumes that the variation of the volumetric water content (θ) in the medium is balanced by the net flux of water flow, i.e., the divergence of specific discharge, if source/sink terms are negligible. Specific discharge is in turn related to the matric potential (h), through the non-linear Darcy–Buckingham law. The resulting equation can be rewritten in different ways, in order to express it as a partial differential equation where a single physical quantity is considered to be a dependent variable. Namely, the most common instances are the Fokker–Planck Equation (for θ), and the Richards Equation (for h). The other two forms can be given for generalized matric flux potential (Φ) and for hydraulic conductivity (K). The latter two cases are shown to limit the non-linearity to multiplicative terms for an exponential K-to-h relationship. Different types of boundary conditions are examined for the four different formalisms. Moreover, remarks given on the physico-mathematical properties of the relationships between K, h, and θ could be useful for further theoretical and practical studies
M. Cappelletti, Giudici legislatoWeiller et C. Labrusse-Riou, Divorce
No full textM. Cappelletti, Giudici legislatoWeiller et C. Labrusse-Riou, Divorce. In: Revue internationale de droit comparé. Vol. 37 N°1, Janvier-mars 1985. pp. 239-240
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