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Reflectarray Design for Satellite Applications with Very Low Cross-Polarization Requirements
Get PDFModern satellite applications for communications require a high polarization purity, usually with parameters such as the crosspolar discrimination (XPD) larger than 33dB. To achieve these values, some form of cross-polarization performance optimization must be carried out. The usual approach is to minimize the crosspolar component of the far field with regard to the copolar pattern in the region of interest. However, this generates suboptimal results since the figure of merit for cross-polarization performance, i.e. the XPD, is optimized indirectly. Thus, it is proposed to directly optimize the figure of merit to considerably improve the polarization purity of reflectarray antennas for satellite applications. For that purpose, the generalized Intersection Approach algorithm is used in a large reflectarray for a contoured beam application with European coverage. It is shown that directly optimizing the cross-polarization figure of merit provides better results than the usual approach of minimizing the crosspolar pattern.This work was supported in part by the European Space Agency (ESA) under contract ESTEC/AO/1-7064/12/NL/MH; 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); and by the Gobierno del Principado de Asturias through Programa "Clarín" de Ayudas Postdoctorales / Marie Curie-Cofund under project ACA17-09.13th European Conference on Antennas and Propagation (EuCAP
Prevención, diagnóstico y tratamiento de los desgarros perineales intraparto. Hospital Universitario Central de Asturias
Get PDFProtocolo del Servicio de Obstetricia y Ginecología el HUCA. Área Sanitaria I
The Yew Disaster Severity Index: A New Tool in Disaster Metrics
Get PDFObjectives: The Richter Scale measures the magnitude of a seismic occurrence, but it does not feasibly quantify the magnitude of the “disaster” at the point of impact in real humanitarian needs, based on United Nations International Strategy for Disaster Reduction (UNISDR; Geneva, Switzerland) 2009 Disaster Terminology. A Disaster Severity Index (DSI) similar to the Richter Scale and the Mercalli Scale has been formulated; this will quantify needs, holistically and objectively, in the hands of any stakeholders and even across timelines.
Background: An agreed terminology in quantifying “disaster” matters; inconsistency in measuring it by stakeholders posed a challenge globally in formulating legislation and policies responding to it.
Methods: A quantitative, mathematical calculation which uses the median score percentage of 100% as a baseline, indicating the ability to cope within the local capacity, was used. Seventeen indicators were selected based on the UNISDR 2009 disaster definition of vulnerability and exposure and holistic approach as a pre-condition. The severity of the disaster is defined as the level of unmet needs. Thirty natural disasters were tested, retrospectively, and non-parametric tests were used to test the correlation of the DSI score
against the indicators.
Results: The findings showed that 20 out of 30 natural disasters tested fulfilled the inability to cope, within local capacity in disaster terminology. Non-parametric tests showed that there was a correlation between the 30 DSI scored and the indicators.
Conclusion: By computing a median fit percentage score of 100% as the ability to cope, and the correlation of the 17 indicators, in this DSI Scale, 20 natural disasters fitted into the disaster definition. This DSI will enable humanitarian stakeholders to measure and compare the severity of the disaster objectively, as well as enable future response to be based on needs.Instituto de Investigación Sanitaria del Principado de Asturias (ISPA
Prevención de la violencia de género en adolescentes
Get PDFthe aim of this review is to know the most useful interventions to prevent teen dating violence, known and applied until now.
Method: database search in Pubmed, Cinahl and Cochrane of articles published between 2010 and 2016.
Conclusions: 21 potentially relevant articles were found according to the search protocol, of which 12 were analyzed following the established inclusion and exclusion criteria. All of them were developed in urban areas of the USA. In them, we identified interventions through performing arts, in the school, with family collaboration and miscellaneous, based on the identification of insane relationships and personal development.
There were interventions related to the development of skills for effective communication, conflict resolution, the handling of emotional responses and the promotion of gender equity. It was observed that multidisciplinary work is the most effective form of prevention.
However, despite being a current issue, there are few results of effective interventions applicable to all types of young people.Conocer y analizar las intervenciones más eficaces para la prevención de la violencia de género en adolescentes conocidas y aplicadas hasta el momento.
Método:
Búsqueda bibliográfica en las bases de datos PubMed, Cinahl y Cochrane de artículos publicados entre el 2010 y 2016.
Conclusiones:
Se encontraron 21 artículos potencialmente relevantes según el protocolo de búsqueda, de los cuales se analizaron 12 siguiendo los criterios de inclusión y exclusión establecidos. Todos ellos se desarrollaron en áreas urbanas de EEUU. En ellos, se identificaron intervenciones mediante artes escénicas, en el ámbito escolar, familiar y miscelánea basadas en la identificación de relaciones insanas y el desarrollo personal. Se observaron intervenciones relacionadas con el desarrollo de habilidades para la comunicación efectiva, la resolución de conflictos, el manejo de respuestas emocionales y la promoción de la equidad de género. Se observó que el trabajo multidisciplinar es la forma más eficaz de prevención.
Pese a ser un tema de actualidad, existen escasos resultados de intervenciones eficaces aplicables a todo tipo de población joven
Effects of continuous embankments and successive run-of-the-river dams on bedload transport capacities along the Rhône River, France
Get PDFThis study was aimed at untangling the relative impacts of successive phases of human modifications on changes in bedload transport along a 430 km-long river reach: the Rhône River from Motz dam to the sea. We used a 1D hydraulic model to solve for water lines across a range of discharges and all along the reach. Next, using grain sizes measured in the channel, we estimate flow competence and mean annual bedload transport capacities using the Recking (2013) bedload transport equation. In addition, we used the Generalized Threshold Model to estimate the relative fine and coarse fractions of the load. Bedload transport estimates were carried out under present-day hydraulic conditions and compared to estimates based on model runs simulating an unimpeded flow regime and using grain sizes measured in bars as a proxy for conditions prior to armouring.
Our results show that present-day bedload transport along the Rhône is significantly fragmented by multiple closely spaced dams. Mean annual bedload capacity varies between 2500 and 16,300 m3/year over all the reaches, with an average of 4700 m3/year. Results of the GTM analysis suggest that this load is composed of 89% fines. We find bed sediment mobility to be very low in most reaches, and that potentially mobile sediments are finer than the median grain size in the riverbed even at high flows. Our results suggest that bedload capacities were 25–35 times higher prior to bed armouring and flow modifications; dams had an impact 2–3 times more important on transport capacities than channel embankments, and bed armouring was foremost a response to channel embankments. Based on an analysis of the ratio of sediment yields to transport capacities, we propose a conceptual scheme illustrating how bedload supply, channel morphology, and surface texture coevolved in the Rhône over the past century and half.This study was conducted within the Rhône Sediment Observatory (OSR), a multi-partner research program funded through the Plan Rhône by the European Regional Development Fund (ERDF), Agence de l'eau RMC, CNR, EDF and three regional councils (Auvergne-Rhône-Alpes, PACA and Occitanie). This work was cofunded by the Labex DRIIHM, French programme ‘Investissements d'Avenir’ (ANR-11-LABX-0010) which is managed by the ANR. At the time of preparation of this manuscript, Vazquez-Tarrio benefitted from grant ACB17-44 cofunded by the Clarin-FICYT (Principality of Asturias) and the Marie Curie programme, as well as support from the project RIVERCHANGES-CGL2015-68824-R (MINECO/FEDER, UE)
La vajilla del monasterio de Corias (Asturias) en Época Moderna a partir del registro arqueológico y los libros de gastos
No full textThe archaeological excavations carried out at the monastery of San Juan Bautista de Corias between 2005 and 2012 provided the most complex, varied and extensive ceramic record currently documented in the south-west of Asturias. In this paper we present the characterization and analysis of a part of this pottery set. We have organized the evidence in chronological groups, technological groups and production groups, within 1560 to 1835 AD chronology. On the other hand, the Expense’s Account Records from the 18th century found in the monastery offer valuable in-formation on the acquisition of pottery by this community. The cross-study of both records, material and textual, unveils an accurate radiography on the monastic community consumption habits. Furthermore, it gives insight into the monks’ capacity to access different productions of local, Iberian and foreign pottery throughout the three occupation phases of the Benedictine establishment in the Modern Age. Finally, this work will undoubtedly offer a chronotypological framework for the comparison and study of ceramics in future archaeological investigations in this geographical area.Las excavaciones arqueológicas realizadas en el monasterio de San Juan Bautista de Corias entre 2005 y 2012 proporcionaron el registro cerámico más complejo, variado y dilatado documentado hasta la fecha en el suroccidente de Asturias. En este trabajo presentamos la caracterización y el análisis de una parte de este corpus cerámico, que hemos organizado en grupos cronológicos, grupos tecnológicos y grupos de producción con una cronología que abarca entre 1560 y 1835. Por su parte, los Libros de Gastos elaborados en el propio monasterio en el siglo XVIII ofrecen una valiosísima información sobre la adquisición de vajilla por parte de la comunidad monástica. El estudio cruzado de ambos registros, el material y el textual, nos permite obtener una precisa radiografía sobre los hábitos de consumo de la comunidad monástica y la capacidad de acceso que los monjes tenían a las diferentes producciones de vajilla local, peninsular y extranjera a lo largo de las tres fases de ocupación del establecimiento benedictino en la Edad Moderna. Finalmente, el trabajo ofrecerá, sin duda alguna, un marco de comparación cronotipológica de referencia para el estudio de la cerámica en futuras investigaciones arqueológicas desarrolla-das en este ámbito geográfico
Creación de una biblioteca de recursos didácticos digitales (3D y LiDAR) para la docencia de asignaturas de Arqueología, Prehistoria y Geografía de los Grados de Historia y de Geografía y Ordenación del Territorio
No full textCapítulo de libro sobre innovación docenteEl propósito fundamental de este proyecto de innovación docente era el de generar un repositorio de materiales didácticos accesibles para el alumnado de las asignaturas de Arqueología, Prehistoria y Geografía de los Grados de Historia y de Geografía y Ordenación del Territorio. Para ello se desarrolló una Biblioteca Arqueológica Virtual con diferentes categorías de recursos didácticos digitales.El propósito fundamental de este proyecto de innovación docente era el de generar un repositorio de materiales didácticos accesibles para el alumnado de las asignaturas de Arqueología, Prehistoria y Geografía de los Grados de Historia y de Geografía y Ordenación del Territorio. Para ello se desarrolló una Biblioteca Arqueológica Virtual con diferentes categorías de recursos didácticos digitales
Entretejiendo la historia de la mujer italiana a través de la literatura: La esclavitud monástica como forma de vida impuesta
Get PDFHistóricamente, la Iglesia ha contado con un amplio poder en el sur de Italia. El Resurgimiento reformó el ámbito eclesiástico y, en cierto modo, puso fin a siglos de vejaciones que golpearon con especial virulencia a las mujeres. Sufridora de los rigores de la clausura, la patriota Enrichetta Caracciolo (1821-1901) constató cómo la saturación de los conventos no
era fruto de una auténtica vocación religiosa, sino más bien el resultado de
viles intereses sociales y familiares. Es por ello que, en tanto que conocedora de la imperiosa realidad claustral del momento, la descripción literaria que Caracciolo realiza de las conversas napolitanas con las que
convivió en San Gregorio Armeno se revela de suma importancia, pues sirve como base para plasmar el papel que estas religiosas desempeñaron en el antiguo Reino de las Dos Sicilias.
Asimismo, con el objetivo de dilucidar cuáles eran los verdaderos motivos que inducían a muchas mujeres napolitanas resurgimentales a resignarse a sobrellevar una vida monacal impuesta, este artículo lleva a cabo una
contextualización de la sociedad campana del siglo XIX con la que llegar a esclarecer los patrones conductuales de este periodo. Sirviéndonos de la obra autobiográfica Misteri del chiostro napoletano (Caracciolo, 1864 [1986]), analizaremos cómo la autora retrata tanto hazañas personales como de otras compañeras que corrieron peor suerte que ella, sucesos que permitirán entretejer, de acuerdo con datos empíricos, una parte crucial de la historia de la mujer italiana: la Resurgimental
Historia de la doncella Arcayona. Edición digital alineada múltiple de versiones aljamiado-moriscas.
No full textA subset of low density granulocytes is associated with vascular calcification in chronic kidney disease patients
Get PDFInflammation is central to chronic kidney disease (CKD) pathogenesis and vascular outcomes, but the exact players remain unidentified. Since low density granulocytes (LDGs) are emerging mediators in inflammatory conditions, we aimed to evaluate whether LDGs may be altered in CKD and related to clinical outcomes as biomarkers. To his end, LDGs subsets were measured in peripheral blood by flow cytometry and confocal microscopy in 33 CKD patients undergoing peritoneal dialysis and 15 healthy controls (HC). Analyses were replicated in an additional cohort. DEF3 (marker of early granulopoiesis) gene expression on PBMCs was quantified by qPCR. Total CD15+ LDGs and both CD14lowCD16+ and CD14-CD16- subsets were expanded in CKD. The relative frequency of the CD14-CD16- subpopulation was higher among the CD15+ pool in CKD. This alteration was stable over-time. The increased CD14-CD16-CD15+ paralleled Kauppila scores and DEF3 expression, whereas no association was found with CD14lowCD16+ CD15+. Both subsets differed in their CD11b, CD10, CD35, CD31, CD62L, IFNAR1 and CD68 expression, FSC/SSC features and nuclear morphology, pointing to different origins and maturation status. In conclusion, LDGs were expanded in CKD showing a skewed distribution towards a CD14-CD16-CD15+ enrichment, in association with vascular calcification. DEF3 expression in PBMC can be a marker of LDG expansion