Search results for "Arity"

La amistad y el amor en el epistolario de Séneca

2008

Joaquin.Beltran@uv.es El motivo por el que nos hemos decidido a estudiar en un mismo trabajo la amistad y el amor no es otro que histórico, por la conocida ambigüedad en la que se movían los primitivos filósofos griegos y, además, para llegar a saber la posición concreta de Séneca. Ello nos ha llevado a intentar codificar su pensamiento sobre la amistad y el amor en relación, sobre todo, con Aristóteles y Cicerón. Así, hemos intentado demostrar que Séneca ha unido a los conceptos de amistad e incluso amor otras ideas nuevas, que le dan un aire diferente, como la de solidaridad, asociación o sociedad, y que nos inducen a pensar en una definición afirmativa y muy positiva de la amistad frente…

Leading the way toward fuel parity in photovoltaics: The utility-scale market in Sicily, Italy

2016

The global photovoltaic (PV) market has been growing exponentially since almost twenty years. This huge demand for photovoltaic systems has been mainly driven by public subsidies in the form of a variet y of national incentive schemes. However, in Countries where successful incentive schemes have been pioneered and are now – as planned - being brought to an end, the PV market is called to the challenge of surviving without any incentive to the end user. Grid and fuel-parity represent the keystone of this emerging new phase in the history of this renewable energy technology. In this paper we present a sensitivity analysis showing that in Sicily, Italy, the Levelized Cost of Energy from utili…

Metal-atom impact on the self-assembly of cup-and-ball metalloporphyrin–fullerene conjugates

2014

International audience; A fullerene ammonium derivative has been combined with different metalloporphyrin–crown ether receptors to generate very stable supramolecules. The combination of fullerene–porphyrin and ammonium–crown ether interactions leads to a strong chelate effect as evidenced by a high effective molarity (3.16 M). The different parameters influencing the stability of the supramolecular ensembles, in particular the nature of the metal in the porphyrin moiety, have been rationalized with the help of theoretical calculations thus providing new insights into fullerene–porphyrin interactions.

Clustering and Registration of Multidimensional Functional Data

2013

In order to find similarity between multidimensional curves, we consider the application of a procedure that provides a simultaneous assignation to clusters and alignment of such functions. In particular we look for clusters of multivariate seismic waveforms based on EM-type procedure and functional data analysis tools.

On the fusion problem for degenerate elliptic equations

1995

Let F be a relatively closed subset of a Euclidean domain Ω. We investigate when solutions u to certain elliptic equations on Ω/F are restrictions of solutions on all of Ω. Specifically, we show that if ∂F is not too large, and u has a suitable decay rate near F, then u can be so extended.

Mapping the protein composition oftrans-Golgi network (TGN)-derived carrier vesicles from polarized MDCK cells

1998

In polarized MDCK cells, proteins and lipids are sorted in the trans-Golgi network /TGN) and packaged into different vesicular carriers that are delivered to the apical or basolateral cell surface. To gain insight into the sorting and trafficking machinery, we have previously isolated TGN-derived carrier vesicles from perforated MDCK cells. The composition of immuno-isolated apical and basolateral carriers was mapped by two-dimensional (2-D) gel electrophoresis. Here we describe the identification of several components of the vesicle fraction by using three different methods. 2-D gel comigration was performed with carrier vesicles isolated from metabolically labeled MDCK cells and human epi…

Encountering Finitude : On the Hermeneutic Radicalization of Experience

2018

Refuting the challenges of the developmental shift of polarity of GABA actions: GABA more exciting than ever!

2012

International audience; During brain development, there is a progressive reduction of intracellular chloride associated with a shift in GABA polarity: GABA depolarizes and occasionally excites immature neurons, subsequently hyperpolarizing them at later stages of development. This sequence, which has been observed in a wide range of animal species, brain structures and preparations, is thought to play an important role in activity-dependent formation and modulation of functional circuits. This sequence has also been considerably reinforced recently with new data pointing to an evolutionary preserved rule. In a recent ``Hypothesis and Theory Article,'' the excitatory action of GABA in early …

The Use of GAMLSS Framework for a Non-Stationary Frequency Analysis of Annual Runoff Data over a Mediterranean Area

2022

Climate change affects all the components of the hydrological cycle. Starting from precipitation distribution, climate alterations have direct effects on both surface water and groundwater in terms of their quantity and quality. These effects lead to modifications in water availability for agriculture, ecology and other social uses. Change in rainfall patterns also affects the runoff of natural rivers. For this reason, studying runoff data according to classical hydrological approaches, i.e., statistical inference methods that exploit stationary probability distributions, might result in missing important information relevant to climate change. From this point of view, a new approach has to…

Gauss maps on canal hypersurfaces of generic curves in R4

2021

Abstract We analyze the generic behavior of the Gauss map in a special case provided by the canal 3-manifolds of curves generically immersed in R 4 and obtain geometrical characterizations for its singularities. We also study the geometrical properties of their corresponding parabolic surfaces, considered as surfaces immersed in R 4 .