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Comparison of Different Approaches in Reflectarray Synthesis Based on Intersection Approach
No full textThis work presents a comparison between a number of numerical techniques for the copolar synthesis of reflectarray antennas. These techniques are based on the generalized intersection approach. The classical phase-only synthesis (POS) is considered using different methodologies to compute the gradient: the analytical approach by exactly calculating the derivative and two numerical methods based on finite differences, one using the FFT and another the technique of differential contributions (DFC). In addition, a direct layout optimization (DLO) for copolar synthesis is also considered. In order to make the DLO efficient, a surrogate model of the unit cell is employed. A computing time study is presented, showing that for copolar only synthesis at a single frequency, the POS technique using DFC has superior performance. Finally, a large reflectarray with European footprint for satellite broadcasting is synthesized, comparing the results obtained with all techniques.This work was supported in part by the Ministerio de Ciencia, Innovación y Universidades under project TEC2017-86619-R (ARTEINE); by the Ministerio de Economía, Industria y Competitividad under project TEC2016-75103-C2-1-R (MYRADA); by the Gobierno del Principado de Asturias/FEDER under Project GRUPIN-IDI/2018/000191; by the Gobierno del Principado de Asturias through Programa "Clarín" de Ayudas Postdoctorales / Marie Curie-Cofund under project ACA17-09; by Ministerio de Educación, Cultura y Deporte / Programa de Movilidad “Salvador de Madariaga” (Ref. PRX18/00424).International Conference on Electromagnetics in Advanced Applications (ICEAA
Wideband Reflectarrays with Improved Performances for Space Applications
No full textThis work presents the design and optimization of two very large reflectarrays with improved polarization purity for Direct Broadcast Satellite missions in dual-linear polarization. The first antenna is a one-meter contoured-beam reflectarray working in a 15% frequency band providing European coverage. The second reflectarray has a diameter of 1.1 meters and provides coverage for South America in transmit and receive bands. In both cases, the design approach is as follows. First, a layout is obtained at central frequency. Then, using a limited number of degrees of freedom (DoF), a copolar only optimization is carried out in the whole frequency band. Finally, increasing the number of DoF, cross-polarization requirements are also included in the optimization. For the reflectarray with European coverage, a minimum copolar gain of 28 dBi is obtained inn the whole band, with XPI values higher than 31.5 dB. On the other hand, the reflectarray with South American coverage complies with all copolar and cross-polarization requirements with a loss budget of at least 0.49 dB in both receive and transmit bands.This work was supported in part by the Ministerio de Ciencia, Innovación y Universidades under project TEC2017-86619-R (ARTEINE); by the Ministerio de Economía, Industria y Competitividad under project TEC2016-75103-C2-1-R (MYRADA); by the Gobierno del Principado de Asturias/FEDER under Project GRUPIN-IDI/2018/000191; by the Gobierno del Principado de Asturias through Programa "Clarín" de Ayudas Postdoctorales / Marie Curie-Cofund under project ACA17-09; by Ministerio de Educación, Cultura y Deporte / Programa de Movilidad "Salvador de Madariaga" (Ref. PRX18/00424).13th Iberian Meeting on Computational Electromagnetics (EIEC
Evaluación del perfil de morbilidad y características sociodemográficas de pacientes domiciliarios crónicos.
No full textIntroduction: In recent years there has been a strong boost of home care, emerging new
devices in various Autonomous Communities to provide socio-health responses to patients
whose best therapeutic location is home. The reasons that have contributed to its strengthening are the development of primary care, the demand for comprehensive care at home, aging and chronicity of the population.
Objective: Evaluate the sociodemographic characteristics and morbidity profile of patients integrated into the home care program of the Basic Health Area of Almassora.
Material and methods: An observational and cross-sectional descriptive study on a sample
of 192 patients, who underwent an exhaustive review and analysis of computerized medical
records.
Results: Two thirds of the sample are women, with an average age of 83.07 years.
Regarding the profile of pathologies presented by patients, we see that the most prevalent are hypertension (80.3%), cognitive impairment (68.8%), cardiovascular diseases (62%), Diabetes Mellitus (44, 8%) and pressure ulcers (42.7%).
The majority of patients belong to level 3 of the chronicity strategy of the Comunitat Valenciana (45.8%)
Conclusions: The profile of the patient studied determines a majority of women around 83 years, belonging to level 2-3 of the care strategy of the Valencian Community, with various pathologies, physical dependence and pressure ulcers. The caregivers are the children or the spouse and do not have barriers to accessIntroducción: En los últimos años se ha producido un fuerte impulso de la atención domiciliaria, surgiendo nuevos dispositivos en diversas Comunidades Autónomas para dar respuestas sociosanitarias a pacientes atendidos en domicilio. Los motivos para ello son, entre otros, el desarrollo de la Atención Primaria, la demanda de atención integral en el domicilio, el envejecimiento y la cronicidad de la población.
Objetivo: Evaluar las características sociodemográficas y el perfil de morbilidad
de los pacientes integrados en el programa
de atención domiciliaria de la Zona Básica
de Salud de Almassora.
Material y métodos: Estudio descriptivo observacional y transversal, sobre una
muestra de 192 pacientes, a quienes se les
ha realizado una revisión y análisis exhaustivos de historias clínicas informatizadas.
Resultados: Dos tercios de la muestra son mujeres, con una media de edad de 83.07 años.
En cuanto al perfil de patologías que
presentan los pacientes, vemos que las
más prevalentes son la Hipertensión Arterial (HTA) (80,3%), el deterioro cognitivo (68,8%), las enfermedades cardiovasculares
(62%), la diabetes Mellitus (44,8%) y las Úlceras Por Presión (UPP) (42,7%).
La mayoría de pacientes pertenecen al nivel 3 de la estrategia de cronicidad de la
Comunitat Valenciana (45,8%).
Conclusiones: El perfil del paciente estudiado se trata en su mayoría de mujeres
en torno a los 83 años, pertenecientes al
nivel 2-3 de la estrategia de cuidados de la
Comunidad Valenciana, con diversas patologías, dependencia física y UPP. Sus cuidadores/as son sus hijos/as o su cónyuge y no tienen barreras de acceso al domicilio
Historia de la doncella Arcayona. Edición digital alineada múltiple de versiones aljamiado-moriscas. Ms. 1944 de la Bibliothèque nationale d’Algérie.
No full textNuevos apuntes sobre Lucus Asturum. Resultados de la intervención arqueológica en la Ería de la Castañera
No full textEste breve artículo recoge, de manera preliminar, los resultados de las actuaciones arqueológicas llevadas a cabo en el Prao Lugo, en Lugo De Llanera, proyecto promovido por la Concejalía de Cultura, Deportes y Turismo del Excmo. Ayuntamiento de Llanera para el estudio, investigación y realización de diferentes análisis históricos en el yacimiento de Lucus Asturum, sito en el entorno de Lugo de Llanera, en el Concejo de Llanera. Estas actuaciones forman parte de una actuación multidisciplinar para promover la valoración del potencial arqueológico del yacimiento, ya estudiado en décadas precedentes, para su sometimiento a excavaciones sistemáticas y su puesta en valor
"Hortus conclusus": tradición y reescritura en la poesía de posguerra de Carmen Conde
No full textTe literary work of Carmen Conde (Cartagena, 1907-Madrid,1996) written during the post-war period carried out a profound dialogue aboutthe topos of
locus amoenus
by means of one of the spaces to which it is frequentlyattributed, the garden or
hortus conclusus
, and through one of its main elements,the flower. In poems that appear in
Ansia de la gracia
(1945) and
Iluminada tierra
(1951), the garden and the floral imaginary serve to suggest models of femaleidentity that transgress both the passive image of women portrayed by male au-thors and the national identity imposed on women by the Francoist regime. Myarticle develops a theoretical framework from the perspective of feminist literarycriticism in order to study this rewriting and analyzes texts by Conde that arerepresentative of this rewriting.Programa Severo Ochoa (referencia PA-17-PF-BP16126) de Ayudas predoctorales para la investigación y la docencia del Gobiernodel Principado de AsturiasLa obra de Carmen Conde (Cartagena, 1907-Madrid, 1996) escritaen el período de posguerra establece un profundo diálogo con el tópico del
locusamoenus
a través de uno de los espacios con los que frecuentemente aparece rela-cionado, el jardín u
hortus conclusus
, y de uno de sus elementos constitutivos, laflor. En algunos de los poemas pertenecientes a
Ansia de la gracia
(1945) e
Ilumi-nada tierra
(1951), el jardín y el imaginario floral servirán para plantear modelosde identidad femenina que transgreden tanto la imagen pasiva de la mujer pro-yectada por la literatura patriarcal a través de los tópicos, como la impuesta por elproyecto identitario nacional del Régimen de Franco. En este artículo se elaboraun marco teórico desde la teoría literaria feminista para el estudio de esta reescri-tura y se analizan algunos de los textos de Carmen Conde que son representativosde la mism
Substance Use and Gambling Patterns Among Adolescents: Differences According to Gender and Impulsivity
No full textEste artículo (Martínez-Loredo, V., Grande-Gosende, A., Fernández-Artamendi, S., Secades-Villa, R., & Fernández-Hermida, J. R. (2019). Substance use and gambling patterns among adolescents:Differences according to gender and impulsivity. Journal of Gambling Studies, 35(1),63-78. doi:10.1007/s10899-018-09824-x) se ciñe a una política de derechos de autor de la revista que impide su difusión en otro portal diferente al de Journal of Gambling Studies. La versión de la editorial
está disponible únicamente para usuarios con suscripción de pago a la revista en el
siguiente enlace: http://dx.doi.org/10.1007/s10899-018-09824-x
Puede visualizarse la versión post-print del artículo publicado en Journal of Gambling Studies.Although alcohol, tobacco and cannabis are the most prevalent drugs used by adolescents, gambling is a growing concern due to its increasing popularity. To date there have
been few studies exploring the existing patterns of concurrent use of drugs and gambling
in adolescents. This study aims to identify subpopulations of adolescents using diferent
substances and gambling activities, to explore gender diferences and to examine impulsivity as a predictor of class membership. A cross-sectional survey was carried out in 22
high-schools, and 1644 adolescents were assessed (54.1% males; mean age=15.21 years,
SD = .75). Participants reported their last-year frequency of using alcohol, tobacco and
cannabis, as well as bingo, poker, other casino games, sports betting, lottery, scratch tickets and electronic gaming machines. Problem drinking was evaluated with the Rutgers
Alcohol Problems Index, and gambling severity with the South Oaks Gambling Scale for
Adolescents. Impulsivity was assessed using a Delay Discounting task, the Barratt Impulsiveness Scale and the Impulsive Sensation-Seeking Scale. Based on a latent class model
of drugs and gambling activities, four subpopulations of males and fve of females were
found. General impulsivity and sensation seeking were the most consistent predictors of
class membership. These novel fndings support the need to consider specifc groups of
adolescents engaging in diferent patterns of addictive behaviors when implementing selective prevention strategies
Urbanistica giudicale. Spazi pubblici e architetture (XI-XIV secolo)
Get PDFIn the Sardinian Giudicati, between the 11 th and 14 th
centuries, the Giudici commissioned architectural works
and urban projects, carried out an intense activity
at the center of a remarkable crossroads of political
and commercial interests. This study re-evaluates their
role as protagonists and proposes to identify the
outlines of their peculiar way of operating within the
most widespread design trends of the late Middle Ages.
Their international contacts, particularly towards
institutions and governments interested in current
policies in the western Mediterranean, allowed them to
choose and exchange experiences and models, often on
an equal basis
