Non-Hermitian robust edge states in one-dimension: Anomalous localization and eigenspace condensation at exceptional points

Capital to topological insulators, the bulk-boundary correspondence ties a topological invariant computed from the bulk (extended) states with those at the boundary, which are hence robust to disorder. Here we put forward an ordering unique to non-Hermitian lattices, whereby a pristine system becomes devoid of extended states, a property which turns out to be robust to disorder. This is enabled by a peculiar type of non-Hermitian degeneracy where a macroscopic fraction of the states coalesce at a single point with geometrical multiplicity of $1$, that we call a phenomenal point.Comment: 6 pages, 4 figure

Evolución del conocimiento físico

In this paper we wish to present the evolution of the structure of the physic knowledge from the level of 1st year BUP to science graduates. The reliability of the responses also analysed

Estudio de los ladrillos utilizados durante la época romana en Carmona (Sevilla): estudio mineralógico, térmico y físico

El presente trabajo se engloba dentro de un proyecto amplio en el que se pretende el estudio comparativo de los ladrillos y los morteros, de época romana, utilizados en las distintas comarcas de la provincia de Sevilla. Dicho proyecto incluye los análisis mineralógico, y térmico y de los ensayos físicos de las muestras estudiadas correspondientes a la ciudad de Carmona. Los resultados de los análisis químicos serán objeto de una segunda publicación.This report comprises a large project where a comparative study is performed of brick and mortar used in Roman times in different areas of the province of Sevilla. The project includes a mineralogical and thermic analysis of the physical tests of the samples which correspond to the chemical analysis will be discussed in a later publication

The transition to irreversibility in sheared suspensions: An analysis based on a mesoscopic entropy production

We study the shear-induced diffusion effect and the transition to irreversibility in suspensions under oscillatory shear flow by performing an analysis of the entropy production associated to the motion of the particles. We show that the Onsager coupling between different contributions to the entropy production is responsible for the scaling of the mean square displacement on particle diameter and applied strain. We also show that the shear-induced effective diffusion coefficient depends on the volume fraction and use Lattice-Boltzmann simulations to characterize the effect through the power spectrum of particle positions for different Reynolds numbers and volume fractions. Our study gives a thermodynamic explanation of the the transition to irreversibility through a pertinent analysis of the second law of thermodynamics.Comment: 17 pages, 3 figures, paper submitted tp phys rev

Gandulfo Carolina. Entiendo pero no hablo. El guaraní "acorrentinado" en una escuela rural: usos y significaciones

La etnografía que se reseña corresponde a la Tesis de Maestría en Antropología Social de Carolina Gandulfo, como alumna de la Universidad Nacional de Misiones. Escrita en base al trabajo de campo realizado en Lomas de González, paraje rural, situado SO kilómetros al este de la Ciudad de Corrientes; entre los años 2002 y 2004. Pertenece a una publicación llamada "Serie Etnográfica" dirigida por Rosana Guber y Federico Neiburg, que pretende poner en diálogo teorías sobre la cultura, la política, la familia, etc., bajo un análisis de amplia apertura metodológica. La idea central de la que parte Carolina Gandulfo al iniciar la investigación es la de que, en la sociedad correntina, el castellano ha subordinado al guaraní, al lugar de lengua inferior, vulgar, de estructura sintáctica indefinida, condenándolo al uso doméstico entre mayores y prohibida para los menores. Utilizando como argumento de su obra, la prohibición del guaraní expresada, según ella misma, en un "discurso de la prohibición". El objetivo general de la obra es el de desentrañar los porqué de la prohibición sociopolítica del guaraní, cuando representa un idioma de alta significación comunicativa en la práctica diaria. Prohibición hecha a pesar de la infinidad de elementos combinados bajo el uso de ese idioma con el castellano. Asimismo, se propone poner por escrito cuestiones vinculadas a la lengua guaraní que no estaban trabajadas de esta forma en Corrientes hasta el momento. Arribar a conclusiones sobre la situación actual de los usos y combinaciones del guaraní con el castellano en dicha Provincia, haciendo foco en las escuelas. A la vez que, indagar acerca de la significaciones que adquirieron y adquieren los usos de esas combinaciones en el marco de una valoración negativa y positiva de aquellas lenguas respectivamente

MATERNAL PSYCHOSOCIAL ADVERSITY AND PREGNANCY AND DELIVERY COMPLICATIONS ASSOCIATED WITH PERINATAL DEPRESSION AND ANXIETY: A CUMULATIVE INDEX APPROACH

Background. Despite current screening practices and known risk factors, perinatal mental health is a leading public health concern. Several key gaps remain in the perinatal mental health literature. First, despite the higher prevalence of anxiety, anxiety and its comorbidity with depression during pregnancy receives less clinical and research attention. Second, the accumulation of psychosocial factors in relation to antepartum mental health has been understudied. Third, research of postpartum mental health has infrequently focused on new-onset symptoms. Fourth, while psychosocial and obstetric risk factors don’t necessarily occur in isolation, exposure to the cumulative occurrence of these factors and mental health is understudied. Methods. Using cross-sectional data from pregnant women (n=1,797), we examined the association between eight psychosocial factors and antepartum mental health. Specifically, we estimated the association between a psychosocial adversity index on 1) the persistence of depression and anxiety, individually, and on 2) the comorbid occurrence, throughout the second and third trimesters of pregnancy. In our second analysis, we utilized longitudinal data from women (n=378) without elevated mental health symptoms in pregnancy to estimate the relationship between nine pregnancy and delivery complications and the new onset symptoms of depression and/or anxiety at 3 or 12 months postpartum. Results. Compared to women with a low psychosocial adversity index score, women reporting a high level of psychosocial adversities (43% of sample) had 2.06 (95% Confidence Interval:1.51-2.82) times higher adjusted odds of endorsing only depressive symptoms or anxiety, and 5.57 (95% Confidence Interval:3.95-7.85) times higher the odds of endorsing comorbid symptoms at either the second or third trimester. The associations for persistent symptoms of depression and anxiety were of similar direction and magnitude. Women with high pregnancy and delivery complications (23% of sample) had 1.71 (95% Confidence Interval:1.13-2.59) times the risk of incident mental health symptoms postpartum, compared to women with low complications.Conclusion. Women with high psychosocial adversities during pregnancy may be at higher risk of elevated depressive symptoms and anxiety in pregnancy. Even in absence of mental health symptoms in pregnancy, women with an accumulation of pregnancy and delivery complications may be at higher risk of mental health symptoms during postpartum.Doctor of Philosoph

Blood pressure and lipid goal attainment in the hypertensive population in the primary care setting in Spain

[Abstract] Although blood pressure (BP) control is crucial in hypertensive patients, clinical practice guidelines agree that the goal of treatment should be aimed at not only decreasing BP but reducing global cardiovascular risk. The aim of this cross-sectional study was to evaluate BP, low-density lipoprotein cholesterol (LDL-C), and composite control rates in a hypertensive population in a primary care setting in Spain. Good BP control was defined as <140/90 mm Hg (<130/80 mm Hg for diabetics).LDL-C control rate was established according to the third report of the National Cholestrol Education Program Adult Treatment Panel criteria. A total of 12,954 patients (49.9% women, aged 62.1±10.7 years) were included. BP was controlled in 24.8% of patients, LDL-C in 26% of patients and, when combined, in only 8.6%. The rates of control were significantly worse in high-risk subgroups, such as high-coronary-risk, diabetic, or metabolic syndrome patients. The BP and LDL-C control rates in the hypertensive population attended to daily in primary care settings in Spain are low