1,615 research outputs found
A Cointegration Analysis of the Long-Run Supply Response of Spanish Agriculture to the Common Agricultural Policy
Using cointegration techniques, we estimate two models that capture the long-term relationship between Spanish prices and agricultural production. The models were estimated over Spanish agricultural data from 1970 to 2000, a period spanning Spain’s implementation of the Common Agricultural Policy in 1986 and the application of the MacSharry Reforms in 1992. The models, as well asplausible counterfactual scenarios constructed to assess the production changes induced by the CAP, lead to three principal results. First, we find that Spanish agricultural output is responsive to agricultural prices. Second, we find that the MacSharry reforms have been instrumental in restraining agricultural production. Third, we find that Spanish agricultural output would have been higher if Spain had not applied the CAP. These results are important and have broad implications. First, they strengthen the position of those reformers both within and outside of Europe that argue for lower price supports as an appropriate policy for stemming European agricultural surpluses. Second, they indicate that recent EU reforms, which have in effect extended the MacSharry reforms, are appropriate measures for curbing European agricultural surpluses
Algunas aclaraciones en torno a la revista Vida Nueva (1898-1900)
Las
publicaciones
periódicas
de
los
últimos
años
del
XIX
son
una
fuente
de
primer
orden
para
el
análisis
cultural
del
fin
de
siglo.
Para
ello
las
más
indicadas
son
las
revistas
realizadas
por
las
jóvenes
élites
intelectuales.
Vida
Nueva
(1898-‐1900)
es
una
de
esas
cabeceras
en
la
que
colaboraron
autores
como
Juan
Ramón
Jiménez,
Manuel
Machado,
Vicente
Blasco
Ibáñez,
Miguel
de
Unamuno,
Azorín,
Ángel
Ganivet
o
Ramiro
de
Maeztu.
Sin
embargo
—y
en
contraste
con
publicaciones
como
Helios,
Electra
o
Renacimiento—
ha
sido
poco
estudiada.
El
difícil
acceso
a
esta
revista
ha
propiciado
que,
aunque
sea
muy
citada,
sea
poco
conocida.
A
menudo
las
informaciones
que
se
ofrecen
son
incorrectas
aun
en
los
aspectos
más
básicos
(duración,
dirección,
colaboradores).
En
este
trabajo
se
aclaran
esos
aspectos
como
base
para
futuras
investigaciones.Periodic
publications
of
the
last
years
of
the
nineteenth
century
are
a
prime
source
of
information
for
cultural
analysis
of
the
century´s
end.
The
best
magazines
for
this
analysis
are
the
publications
made
by
young
writers
and
modernist
intellectuals.
The
weekly
Vida
Nueva
(1898-‐1900)
is
one
of
those
publications.
In
Vida
Nueva
worked
writers
like
Juan
Ramón
Jiménez,
Manuel
Machado,
Vicente
Blasco
Ibáñez,
Miguel
de
Unamuno,
Azorin,
Angel
Ganivet
or
Maeztu.
However,
and
in
contrast
with
headers
like
Helios,
Electra
or
Renacimiento,
has
been
little
studied.
The
difficult
access
to
funds
that
magazine
has
meant
that,
even
if
often
quoted,
is
little
known.
Often
the
information
offered
is
incorrect
and
contradictory,
even
in
the
most
basic
aspects
(duration,
direction
of
the
magazine
reviewers).
In
this
paper
these
aspects
as
a
basis
for
future
research
are
clarified.
Observaciones petrográficas y tectónicas sobre las ofitas del área de Aulet (Prepirineo meridional, prov. de Huesca)
Se describen las diversas facies petrográficas y se indica su distribución en dos de las masas ofíticas del afloramiento de materiales triásicos de los alrededores de Aulet (Huesca). Se expresa su composición quimica que refleja elevada uniformidad y escasa diferenciación, mostrando analogía con los basaltos toleíticos continentales. Se ratifica su edad (Keuper-Lías) por el método óptico de la dispersión de la birrefringencia (Kd) y se adjunta una breve exposición de los fundamentos del método. Finalmente se analiza la fracturación y su comportamiento en relación con las deformaciones que afectan a la cobertera supratriásica
Nota preliminar sobre la presencia de estructuras fluidales en las ofitas del area de Estopiñán (Provincia de Huesca)
Se describen las estructuras fluidales halladas en las ofitas del afloramiento de Trías de Estopiñán (Hesca) y se discute su significado en relación con la polaridad, la edad y el modo de emplazamiento de estas rocas
Is the Voter Model a model for voters?
The voter model has been studied extensively as a paradigmatic opinion
dynamics' model. However, its ability for modeling real opinion dynamics has
not been addressed. We introduce a noisy voter model (accounting for social
influence) with agents' recurrent mobility (as a proxy for social context),
where the spatial and population diversity are taken as inputs to the model. We
show that the dynamics can be described as a noisy diffusive process that
contains the proper anysotropic coupling topology given by population and
mobility heterogeneity. The model captures statistical features of the US
presidential elections as the stationary vote-share fluctuations across
counties, and the long-range spatial correlations that decay logarithmically
with the distance. Furthermore, it recovers the behavior of these properties
when a real-space renormalization is performed by coarse-graining the
geographical scale from county level through congressional districts and up to
states. Finally, we analyze the role of the mobility range and the randomness
in decision making which are consistent with the empirical observations.Comment: 13 pages, 13 figure
Observaciones petrográficas y tectónicas sobre las ofitas del área de Aulet (Prepirineo meridional, prov. de Huesca)
Se describen las diversas facies petrográficas y se indica su distribución en dos de las masas ofíticas del afloramiento de materiales triásicos de los alrededores de Aulet (Huesca). Se expresa su composición quimica que refleja elevada uniformidad y escasa diferenciación, mostrando analogía con los basaltos toleíticos continentales. Se ratifica su edad (Keuper-Lías) por el método óptico de la dispersión de la birrefringencia (Kd) y se adjunta una breve exposición de los fundamentos del método. Finalmente se analiza la fracturación y su comportamiento en relación con las deformaciones que afectan a la cobertera supratriásica
Nota preliminar sobre la presencia de estructuras fluidales en las ofitas del area de Estopiñán (Provincia de Huesca)
Se describen las estructuras fluidales halladas en las ofitas del afloramiento de Trías de Estopiñán (Hesca) y se discute su significado en relación con la polaridad, la edad y el modo de emplazamiento de estas rocas
A note on the combustion of blends of diesel and soya, sunflower and rapeseed vegetable oils in a light boiler
Producción CientíficaThis paper deals with the study of the vegetable oils (VO) used as fuel for heating. The properties of sunflower, rape and soya oils are studied and these are compared with the properties of C-diesel fuel (used for heating domestic purposes in Spain). The mixtures of VO and diesel are studied and characterized and, finally, the results of a series of combustion trials of the mixtures in a conventional heating installation with a mechanical pulverization burner are presented. The results show that viscosity of VO limits the use of blends up to 40% of them, and the oxygen present in their structures contributes to an efficiency gai
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