Search results for "ICAD"
showing 10 items of 1297 documents
Inverse eigenvalue problem for normal J-hamiltonian matrices
2015
[EN] A complex square matrix A is called J-hamiltonian if AT is hermitian where J is a normal real matrix such that J(2) = -I-n. In this paper we solve the problem of finding J-hamiltonian normal solutions for the inverse eigenvalue problem. (C) 2015 Elsevier Ltd. All rights reserved.
Assessing the impact of COVID-19 on liver cancer management (CERO-19)
2021
[Background & Aims] The coronavirus disease 2019 (COVID-19) pandemic has posed unprecedented challenges to healthcare systems and it may have heavily impacted patients with liver cancer (LC). Herein, we evaluated whether the schedule of LC screening or procedures has been interrupted or delayed because of the COVID-19 pandemic.
THE N* (1520) -> DELTA PI AMPLITUDES EXTRACTED FROM THE GAMMA P -> PI+ PI- P REACTION AND COMPARISON TO QUARK MODELS
1995
[EN] The ¿p ¿ ¿+¿¿p reaction, in combination with data from the ¿N ¿ ¿¿N reaction has been recently analyzed and allows one to obtain the s- and d-wave amplitudes for the decay into ¿¿ with absolute sign with respect to the helicity amplitudes. In addition one obtains the novel information on the momentum dependence of the amplitudes. In the present paper we show how this new information poses new constraints to quark models of hadron structure. In particular we show that the signs and the momentum dependence of these amplitudes coincide with those given by non relativistic constituent quark models. The absolute values provided by these models agree only qualitatively, and a discussion is d…
Dynamical generation of wormholes with charged fluids in quadratic Palatini gravity
2014
The dynamical generation of wormholes within an extension of General Relativity (GR) containing (Planck's scale-suppressed) Ricci-squared terms is considered. The theory is formulated assuming the metric and connection to be independent (Palatini formalism) and is probed using a charged null fluid as a matter source. This has the following effect: starting from Minkowski space, when the flux is active the metric becomes a charged Vaidya-type one, and once the flux is switched off the metric settles down into a static configuration such that far from the Planck scale the geometry is virtually indistinguishable from that of the standard Reissner-Nordstr\"om solution of GR. However, the innerm…
Planck scale physics and topology change through an exactly solvable model
2014
We consider the collapse of a charged radiation fluid in a Planck-suppressed quadratic extension of General Relativity (GR) formulated à la Palatini. We obtain exact analytical solutions that extend the charged Vaidya-type solution of GR, which allows to explore in detail new physics at the Planck scale. Starting from Minkowski space, we find that the collapsing fluid generates wormholes supported by the electric field. We discuss the relevance of our findings in relation to the quantum foam structure of space–time and the meaning of curvature divergences in this theory.
Synthesis and High-Pressure Study of Corundum-Type In2O3
2015
This work reports the high-pressure and high-temperature (HP-HT) synthesis of pure rhombohedral (corundum-type) phase of indium oxide (In2O3) from its most stable polymorph, cubic bixbyite-type In2O3, using a multianvil press. Structural and vibrational properties of corundum-type In2O3 (rh-In2O3) have been characterized by means of angle-dispersive powder X-ray diffraction and Raman scattering measurements at high pressures which have been compared to structural and lattice dynamics ab initio calculations. The equation of state and the pressure dependence of the Raman-active modes of the corundum-type phase are reported and compared to those of corundum (α-Al2O3). It can be concluded that …
Positive affectivity and health
2011
RESUMEN Clásicamente se ha relacionado la afectividad positiva con la salud, y se intuye que hay una conexión directa entre ambas. De hecho, se cree que el desarrollo de sentimientos y emociones positivas ejerce un papel preventivo respecto a la enfermedad; o lo que es lo mismo, actúa como factor protector de la salud. En este texto se pretende explorar la relación entre ambos conceptos a través de diversos postulados teóricos de la Psicología de las emociones. Como resultados principales destaca la confirmación de la hipótesis que apunta a una íntima relación entre estos dos aspectos. Muchos autores consideran que en la actitud o forma de reaccionar ante los estímulos que nos rodean, está …
Aspectos fonéticos y morfológicos de dos tratados del Corpus Hippocraticum
2002
Entre otras consideraciones, en este artículo se quieren poner de relieve algunos rasgos lingüísticos de los tratados hipocráticos De fistulis y De haemorrhoidibus, dentro del grupo de los tratados quirúrgicos de la Colección, con vistas a mostrar cómo se entreveran en ellos rasgos jónicos y áticos en dirección al griego helenístico. En nuestra opinión, estos tratados son obras de pleno siglo IV a. C., De haemorrhoidibus probablemente de mediados de siglo y De fistulis quizá algo anterior. Among other considerations, in this paper the author tries to point out some specific and linguistic features of the Hippocratic treatrises De fistulis and De haemorrhoidibus, both among the surgical trea…
Educación superior femenina y nuevas conformaciones identitarias: Juventud Universitaria Femenina (1919-1930)
2017
This article analyses the way the Juventud Universitaria Femenina (JUF) was set up in 1920, just a few years after women were allowed to take higher studies in Spain,with the main aims of building and giving meanings to the new identity of "female university students ".In a social setting in which some tinycracks were being made in the model of household femininity, the JUF disseminated the discourse and action taken by these intellectually trained professional women who, from 1928, extended their social-political participation, also demanding equal rightsfor women.By forming linguistic structures and with new life experience and practices, this was how the JUF trained a minority sector of …
Las publicaciones divulgativas como vehículo de difusión del patrimonio arqueológico: bibliografía de guías arqueológicas en España 1975-2005
2008
Se realiza una aproximación a las publicaciones de carácter divulgativo como medio para difundir y dar a conocer el patrimonio arqueológico. Para ello, se identifica y caracteriza un determinado género de publicaciones divulgativas: las guías arqueológicas. Se presenta una bibliografía de la literatura de este género publicada a lo largo de las tres últimas décadas en España, analizando la evolución diacrónica del número de publicaciones, la cobertura geográfica, las entidades editoras, la estructura y los contenidos recogidos en este tipo de obras. We analyse Popular Science Archaeological Books as a way of spreading the popularization of archaeological heritage. In that sense, we identifi…