44 research outputs found

    Few-mode field quantization for multiple emitters

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    The control of the interaction between quantum emitters using nanophotonic structures holds great promise for quantum technology applications, while its theoretical description for complex nanostructures is a highly demanding task as the electromagnetic (EM) modes form a high-dimensional continuum. We here introduce an approach that permits a quantized description of the full EM field through a small number of discrete modes. This extends the previous work in ref. (I. Medina, F. J. García-Vidal, A. I. Fernández-Domínguez, and J. Feist, "Few-mode field quantization of arbitrary electromagnetic spectral densities,"Phys. Rev. Lett., vol. 126, p. 093601, 2021) to the case of an arbitrary number of emitters, without any restrictions on the emitter level structure or dipole operators. The low computational demand of this method makes it suitable for studying dynamics for a wide range of parameters. We illustrate the power of our approach for a system of three emitters placed within a hybrid metallodielectric photonic structure and show that excitation transfer is highly sensitive to the properties of the hybrid photonic-plasmonic mode

    Recuérdame: Aplicación de apoyo para el tratamiento de personas con problema de memoria mediante terapias basadas en reminiscencia

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    Este proyecto presenta la creación de una aplicación que facilite a los terapeutas la realización de terapias basadas en reminiscencia para tratar a pacientes con alzheimer, haciéndolas más ágiles y rápidas. Para la realización de la aplicación hemos usado un diseño centrado en el usuario contando durante todo el desarrollo con usuarios finales que nos han ido proporcionando sus expectativas y requisitos. Para obtener los requisitos de la aplicación nos reunimos con dos terapeutas y nos encargamos de hacerles preguntas que nos permitieran saber qué es lo que necesitaban en la aplicación. Después realizamos un análisis de estos datos para conseguir los requisitos. Tras conseguir todos los requisitos, cada uno de los autores de este proyecto, realizó un prototipo de diseño de la aplicación, para realizar una iteración de diseño competitivo. El resultado de esta iteración fue evaluado por un usuario final de la aplicación. La aplicación creada es una aplicación web responsive, con una estructura Modelo Vista Controlador creada mediante lenguajes como HTML, CSS, PHP, JavaScript. Finalmente nos reunimos con los usuarios finales para realizar la evaluación final de aplicación. Los resultados de esta evaluación fueron bastantes positivos ya que, aunque a la aplicación le queda algunos detalles que reto car, los expertos se mostraron bastante contentos con el resultado final. El resultado del cuestionario SUS rellenado por los terapeutas le dio a nuestra aplicación una puntuación de 85, lo que indica que la aplicación tiene una usabilidad aceptable

    Clinical characteristics, treatment, and blood pressure control in patients with hypertension seen by primary care physicians in Spain: the IBERICAN study

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    Objectives: To determine the clinical profile, according to the history of hypertension, the risk of developing hypertension, current antihypertensive treatment and BP control rates in patients with hypertension from the IBERICAN cohort. Methods: IBERICAN is an ongoing prospective cohort study, whose primary objective is to determine the frequency, incidence, and distribution of CVRF in the adult Spanish population seen in primary care settings. This analysis shows the baseline clinical characteristics of patients with hypertension. Adequate BP control was defined as BP <140/90 mmHg according to 2013 ESH/ESC guidelines. Results: A total of 8,066 patients were consecutively included, of whom 3,860 (48.0%) had hypertension. These patients were older (65.8 ± 10.9 vs. 51.6 ± 14.7 years; p < 0.001), had more cardiovascular risk factors, target organ damage and cardiovascular disease (CVD) in comparison with those without hypertension. The risk of hypertension increased with the presence of associated CV risk factors and comorbidities, particularly diabetes, obesity and the metabolic syndrome, and decreased with the intensity of physical activity. Regarding antihypertensive treatments, 6.1% of patients did not take any medication, 38.8% were taking one antihypertensive drug, 35.5% two drugs, and 19.6% three or more antihypertensive drugs. Overall, 58.3% achieved BP goals <140/90 mmHg. A greater probability of BP control was observed with increasing age of patients and the greater number of antihypertensive drugs. Blood pressure control was lower in hypertensive patients with diabetes, obesity, the metabolic syndrome, increased urinary albumin excretion, higher pulse pressure, and lack of antihypertensive treatment. Conclusions: About half of patients attended in primary care settings have hypertension in Spain. Patients with hypertension have a worse CV clinical profile than non-hypertensive patients, with greater association of CVRF and CVD. Around four out of ten patients do not achieve the recommended BP goals, and higher use of combination therapies is associated with a better BP control

    Prevalence of Hyperuricemia and Its Association with Cardiovascular Risk Factors and Subclinical Target Organ Damage

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    The role of uric acid levels in the cardiovascular continuum is not clear. Our objective is to analyze the prevalence of hyperuricemia (HU) and its association with cardiovascular risk factors (CVRF), subclinical target organ damage (sTOD), and cardiovascular diseases (CVD). We evaluated the prevalence of HU in 6.927 patients included in the baseline visit of the IBERICAN study. HU was defined as uric acid levels above 6 mg/dL in women, and 7 mg/dL in men. Using adjusted logistic regression models, the odds ratios were estimated according to CVRF, sTOD, and CVD. The prevalence of HU was 16.3%. The risk of HU was higher in patients with pathological glomerular filtration rate (aOR: 2.92), heart failure (HF) (aOR: 1.91), abdominal obesity (aOR: 1.80), hypertension (HTN) (aOR: 1.65), use of thiazides (aOR: 1.54), left ventricular hypertrophy (LVH) (aOR: 1.36), atrial fibrillation (AFIB) (aOR: 1.29), and albuminuria (aOR: 1.27). On the other hand, being female (aOR: 0.82) showed a reduced risk. The prevalence of HU was higher in men, in patients presenting CVRF such as HTN and abdominal obesity, and with co-existence of LVH, atrial fibrillation (AFIB), HF, and any form of kidney injury. These associations raise the possibility that HU forms part of the early stages of the cardiovascular continuum. This may influence its management in Primary Healthcare because the presence of HU could mean an increased CV risk in the patients

    Flexibilidad y adaptabilidad para las diferentes formas de vivir. Vivienda post pandémica en entorno patrimonial

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    Artículo de gradoEl articulo expone un proyecto basado en el análisis de la vivienda actual y personal desde la pandemia 2020, donde se identifican algunas necesidades a partir de las nuevas modalidades de estudio, trabajo, y otras actividades identificadas en mi hogar. A partir de ello, se generan conjuntos de vivienda unifamiliares permitiendo una progresividad autónoma, así como dos tipologías de apartamentos flexibles que se repiten, obteniendo como resultado la implantación estratégica de un conjunto residencial colectivo, con el objetivo de frenar la tendencia de producir hogares cada vez más limitados ofreciendo la posibilidad de crear espacios multifuncionales adaptables a las circunstancias y necesidades cambiantes, proponiendo un lugar urbano adecuado. Lo anterior se proyecta del municipio de Villa de Leyva – Monumento nacional, en el casco urbano en la periferia del centro histórico, conectando con la quebrada de San Agustín.Resumen 1. Introducción 2. Hipótesis y objetivos 3. Metodología 4. Resultados 5. Discusión 6. Conclusiones 7. Agradecimientos Referencias AnexosPregradoArquitect

    Theoretical uncertainties on quasielastic charged-current neutrino-nucleus cross sections

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    We estimate the theoretical uncertainties of the model developed in [J. Nieves, J.E. Amaro, M. Valverde, Phys. Rev. C 70 (2004) 055503] for inclusive quasielastic charged-current neutrino-nucleus reactions at intermediate energies. Besides we quantify the deviations of the predictions of this many body framework from those obtained within a simple Fermi gas model. A special attention has been paid to the ratio sigma(mu)/sigma(e) of interest for experiments on atmospheric neutrinos. We show that uncertainties affecting this ratio are likely smaller than 5%

    Brief update on diabetes for general practitioners

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    Diabetes includes a group of metabolic disorders in which there is hyperglycemia. This can be due to impaired insulin secretion, insulin action or both. Chronic hyperglycemia is associated with serious long-term complications in several organs, especially in the eyes, kidneys, nerves, heart and blood vessels. In our country this disorder affects 13.8% of the population. There are several types of diabetes although most patients suffer type 2 diabetes. We set out to review the diagnostic process, screening recommendations, prevention strategies, initial assessment upon diagnosis, therapeutic targets regarding both blood glucose levels and the other vascular risk factors while also considering healthy lifestyles and brief references to medications recommended in each section

    A Theoretical Perspective on Molecular Polaritonics

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    In the past decade, much theoretical research has focused on studying the strong coupling between organic molecules (or quantum emitters, in general) and light modes. The description and prediction of polaritonic phenomena emerging in this light-matter interaction regime have proven to be difficult tasks. The challenge originates from the enormous number of degrees of freedom that need to be taken into account, both in the organic molecules and in their photonic environment. On one hand, the accurate treatment of the vibrational spectrum of the former is key, and simplified quantum models are not valid in many cases. On the other hand, most photonic setups have complex geometric and material characteristics, with the result that photon fields corresponding to more than just a single electromagnetic mode contribute to the light-matter interaction in these platforms. Moreover, loss and dissipation, in the form of absorption or radiation, must also be included in the theoretical description of polaritons. Here, we review and offer our own perspective on some of the work recently done in the modeling of interacting molecular and optical states with increasing complexityThis work has been funded by the European Research Council through Grant ERC-2016-StG-714870 and by the Spanish Ministry for Science, Innovation, and Universities−Agencia Estatal de Investigación through grants RTI2018-099737-BI00, PCI2018-093145 (through the QuantERA program of the European Commission), and CEX2018-000805-M (through the María de Maeztu program for Units of Excellence in R&D). We also acknowledge financial support from the Proyecto Sinérgico CAM 2020 Y2020/TCS-6545 (NanoQuCo-CM) of the Community of Madri

    A full process algebraic representation of Ant Colony Optimization

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    2023 Acuerdos transformativos CRUEWe present a process algebra capable of specifying parallelized Ant Colony Optimization algorithms in full detail: PA2CO. After explaining the basis of three different ACO algorithms (Ant System, MAX-MIN Ant System, and Ant Colony System), we formally define PA2CO and use it for representing several types of implementations with different parallel schemes. In particular fine-grained and coarse-grained specifications, each one taking advantage of parallel executions at different levels of system granularity, are formalized.Ministerio de Ciencia e Innovación (España)Depto. de Sistemas Informáticos y ComputaciónFac. de InformáticaTRUEpubAPC financiada por la UC
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