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Search Results: 1 - 10 of 486035 matches for " Juan A. Maroto A. "
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Pasado, presente y futuro de la OCM del aceite de oliva
Eugenio Cejudo García,Juan Carlos Maroto Martos
Cuadernos Geográficos , 1999,
Abstract:
RETOS PARA EL TURISMO ESPA OL. CAMBIO DE PARADIGMA: XIV CONGRESO DE LA ASOCIACIóN ESPA OLA DE EXPERTOS CIENTIFICOS EN TURISMO (AECIT)
Juan Carlos Maroto Martos,Eugenio Cejudo García
Cuadernos Geográficos , 2010,
Abstract:
Rese a de "La actividad turística espa ola en 2006" de AECIT (Asociación Espa ola de Expertos Científicos en Turismo)
Juan Carlos Maroto Martos,Eugenio Cejudo García
Cuadernos Geográficos , 2008,
Abstract:
Algunos aspectos de la evolución de los suicidios en Espa a (1960-1993)
Cejudo García, Eugenio,Maroto Martos, Juan Carlos
Estudios Geográficos , 2001,
Abstract: The suicide, as a phenomenon which presents the clear individual and personal dimension as well as strong social component, has suffered the important quantitative elevation during the decade of 90 when it has presented the visible modification in its structure due to age and sex, having the important characteristcs of being aquired by young people. From the point of view of the rate, the number of suicides of Spanish provinces has approximated to the mediam national level between 1960 and 1990, though persist important différencies between them. [es] El suicidio, como fenómeno que presenta además de una clara dimensión individual y personal un fuerte componente social, ha sufrido una importante elevación en sus cifras durante la década de los 90 al tiempo que ha presentado una notable modificación en su estructura por edad y sexo, siendo cada vez mayor la importancia que está adquiriendo entre la población joven. Desde el punto de vista espacial las tasas de suicidio de las provincias espa olas se han ido aproximando a la media nacional entre 1960 y 1990, aunque persisten importantes diferencias entre ellas. [fr] Le suicide, comme un phénomène qui presente une claire dimension individuelle ainsi qu'un fort élément social, a subi une importante augmentation des chiffres pendent la décennie des 90, au même temps que son structure a été fortement modifiée pour lage et le sexe, étant la population des jeunes celle qui acquiert de plus en plus d'importance. Au niveau de l'espace, les taux de suicide des provinces espagnoles se sont approchéos a la moyenne nationale entre 1960 et 1990, quoiquo il y ait aujourd'hui d'importantes differences entre elles.
Grado de competencia, presión de la deuda y productividad empresarial: un análisis empírico desde la perspectiva del gobierno corporativo
Juan A. Maroto A.,Mónica Melle H.,Ignacio Moreno G.,José M. Rodríguez F.
Panorama Socioeconómico , 2006,
Abstract: Este trabajo ofrece evidencia emp rica acerca del impacto sobre la productividad empresarial derivado del grado de competencia, el poder de mercado, la presi n financiera del endeudamiento y la estructura de la propiedad de la empresa. En el an lisis, se estiman varios modelos din micos de regresi n mediante el m todo generalizado de momentos propuesto por Arellano y Bond (1991), a partir de una muestra de datos de panel constituida por 4.947 empresas manufactureras espa olas pertenecientes a 19 sectores industriales diferentes, durante un periodo que abarca del a o 1994 al a o 2003. Vistos en su conjunto, los resultados alcanzados sugieren que la competencia, junto con la presi n financiera y el tipo de accionista de control en cada empresa, influyen sobre la productividad empresarial, detect ndose alguna evidencia de que pueden actuar a veces como mecanismos complementarios de los c digos de buen gobierno corporativo y de los habituales sistemas de disciplina aplicados por los mercados financieros.
Moving dark energy and the CMB dipole
A. L. Maroto
Physics , 2005, DOI: 10.1088/1475-7516/2006/05/015
Abstract: We explore the possibility that the rest frames of CMB, matter and dark energy differ one from another, i.e. they do not converge on very large scales. In such a case, the usual interpretation of the CMB dipole as being due to the relative motion of the observer with respect to the CMB rest frame is not appropriate. Instead, we find that the measured dipole is due to the observer motion relative to the cosmic center of mass rest frame. This means, in particular, that even an observer at rest with respect to the CMB radiation could measure a non-vanishing dipole anisotropy, provided dark energy is moving with respect to the CMB. We also consider the consequences of moving dark energy for the determination of cosmic bulk flows.
Non-local gravitational effective action and particle production
A. Dobado,A. L. Maroto
Physics , 1998,
Abstract: We study the effective action for gravity obtained after the integration of scalar matter fields, using the local momentum representation based on the Riemann normal coordinates expansion. By considering this expansion around different space-time points, we also compute the non-local terms together with the more usual divergent ones. We discuss the applicability of our results to the calculation of particle production rates in cosmological backgrounds and compare this method with the traditional Bogolyubov transformations.
Crisis hemolítica severa y fallo multiorgánico secundario a infección por Clostridium perfringens Severe hemolytic crisis and multiorgan failure secondary to clostridium perfringens infection
F. Maroto,I. Jara,A. Barrero
Medicina Intensiva , 2012,
Abstract:
The equivalence theorem and the production of gravitinos after inflation
A. L. Maroto,J. R. Pelaez
Physics , 1999, DOI: 10.1103/PhysRevD.62.023518
Abstract: We study the high-energy equivalence between helicity 1/2 gravitinos and goldstinos in order to calculate the production of gravitinos in time-dependent scalar and gravitational backgrounds. We derive this equivalence for equations of motion, paying attention to some subtleties, mainly due to external sources, that are not present in the standard proofs. We also propose the Landau gauge as a simplifying alternative to the usual gauge choices, both for practical calculations and in the equivalence theorem proof.
Production of high-energy gravitinos during preheating
A. L. Maroto,J. R. Pelaez
Physics , 2000,
Abstract: We present a new technique for the calculation of helicity $\pm 1/2$ gravitino production during preheating. It is based on the equivalence between goldstinos and helicity $\pm 1/2$ gravitinos at high energies. The problem is thus reduced to the standard (Majorana) fermion production after inflation. Comparison with the results obtained in the unitary gauge is also presented.
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