A closed-form solution to predict short-range surface plasmons in thin films and its application to hole arrays

A theoretical study of surface plasmon polaritons (SPPs) in ultrathin lossy metal films is presented. The dispersion relation of such films is well known and can be solved numerically to obtain a combination of long-range (LR-) and short-range (SR-) eigenmodes. In this contribution, a simple solution for the SR-SPPs is derived. An approximation for the LR- eigenmodes can be found elsewhere. To validate the approximation, a two dimensional (2D) periodic array of small holes is studied subsequently. The spectral response of the array is obtained by full-wave simulations and the results compared with those calculated analytically, showing an excellent agreement for small holes

Understanding rural areas dynamics from a complex perspective. An application of Prospective Structural Analysis

The development of rural areas continues to be an international priority. The urgent need to fight poverty (mainly concentrated in rural areas) in developing countries, and the demand for increasing economic and social cohesion in developed countries, explain this priority on the political agendas of multilateral bodies, the EU and most other countries. When Development Economics was acknowledged as part of the social and economic theory in the 50’s, different theories and models have tried to explain the unevenness of development and the key elements or conditions that foster it. Traditional rural development programmes were characterised by the implementation of non coordinated, sectoral, horizontal and top-down policies and strategies. The lack of effectiveness and the failures prompted by these policies have propelled the development of new approaches. Territorial rural development is a policy approach embracing contributions from different theoretical frameworks that attempt to foster development strategies based on the consideration of territory as a social construction. Thus, the territory (including all the existing elements and its interactions) has become a key actor for development. However, most of these approaches contemplate rural world through simplistic and monodimensional analysis based on methodologies from single disciplines and on quantitative and/or qualitative morphological descriptions. The pretended multidisciplinarity, frequently ends up on an addition of mono-disciplinary analysis around the object of study. The objective of the present paper is to check the role different elements considered relevant for development by literature´s recent approaches play or can play in rural territories with a very different development situation, using techniques and tools that allow the analysis of rural areas from a complex perspective.territorial rural development, complexity, prospective structural analysis, Community/Rural/Urban Development,

Lourdes Oñederraren eleberrigintza eta genero ikuspegia

Gradu Amaierako Lan honen helburua Lourdes Oñederraren Eta emakumeari sugeak esan zion (1999) eta Intemperies. Babes bila (2013) eleberriak genero perspektiba batetik aztertzea da, eta bien arteko irakurketa konparatua egitea. Amaieran, azterketetatik ateratako zenbait ondorio azalduko dira. Horretarako, lehenik eta behin emakumeek idatziriko euskal literaturaren gaineko sarrera bat aurkeztuko dugu, aurretik gai hau jorratu duten lanen inguruko berrikuspen labur bat eginez. Sarreraren ostean bi eleberriak genero perspektiba batetik aztertu ahal izateko oinarri izan dugun Lasarteren Pertsonaia protagonista femeninoen ezaugarriak eta bilakaera euskal narratiba garaikidean (2011) tesiaren ekarpen nagusiak azalduko ditugu, lan honen helburuak eta nondik norakoak zehazte aldera. Horrela, literaturan emakume protagonista berriaren eraikuntzan gailentzen diren bost aztergaien aurkezpena egingo da: memoria eta modus autobiografikoa, genero indarkeria, amatasunaren gaineko diskurtsoak, emakumea eta nazioa eta sexua eta generoaren berridazketa: polizia eleberrien kasua dutena. Hauen artean batzuk ondoren landuko diren bi eleberrien azterketan oinarri izango direnez gero, ezinbestekoa da bakoitzaren funtzioa labur bada ere zehaztea. Ondoren Eta emakumeari sugeak esan zion eleberriaren azterketari helduko diogu, lau ikerlerro oinarri izanik. Ikerlerro horietatik hiru aurretik azaldutakoak izango dira: memoria eta modus autobiografikoa, amatasunaren gaineko diskurtsoak eta emakumea eta nazioa, amatasunaren aztergaia gai zentrala izango delarik. Gainera, Oñederraren eleberrigintzan nabarmentzekoa den hizkuntzaren erabilera ere kontuan izango dugu. Ikerketa aurrera eramateko, halaber, eleberri honen gainean burutu diren bestelako autoreen ekarpenak ere aintzat izango ditugu. Jarraian Intemperies. Babes bila eleberriaren azterketa egingo dugu, aurreko azterketak landutako ikerlerro berak jarraituz. Eleberriak banaka aztertu ondoren, bi eleberriek eta bi nobelen emakume protagonistek partekatzen dituzten aztergaien antzekotasunei helduko diegu. Horien artean Lasartek azalduriko emakume berriaren irudia sortzeko garrantzitsuak diren memoria eta modus autobiografikoaren erabilera, amatasunaren gaineko diskurtsoa edota nazioaren gaia gailenduko dira; eta baita hizkuntzaren erabilerak bi eleberrietan bereganatzen duen garrantzia ere

How to promote effectiveness in terms of time in networking processes

Because time is present in all learning activities it is important to consider how to optimize it. This is even more important in e-learning given the virtual student profile, most of them adults who do not have time. A tool that seems to favor time management is the wiki. The aim of this article is to analyze how the wiki can favor efficiency in networking processes. The general context is the "ICT skills" course by the Universitat Oberta de Catalunya. Starting from a qualitative methodology, the paper analyzes how students working in small groups carry out a virtual project through a wiki. In terms of encouraging effectiveness by using a wiki in a networking context, data show that it is important to consider three elements: the time required to learn how the tool works, organizing the process and optimizing usage of the tool. The paper provides some key elements along these lines

A unifying study of phenotypic and molecular genetic variability in natural populations of Anadenanthera colubrina var. cebil from Yungas and Paranaense biogeographic provinces in Argentina

Anadenanthera colubrina var. cebil is a native tree species in the South American subtropical forests that is discontinuously distributed. Thirteen quantitative traits and eight nuclear microsatellite loci were examined in individuals from two biogeographic provinces of Argentina in order to determine the number and composition of genetically distinguishable groups of individuals and explore possible spatial patterns of thephenotypic and genetic variability. Means of reproductive traits were higher in the Yungas than in the Paranaense biogeographic province whereas five out of eight non-reproductive quantitative traits showed higher mean values in the latter. Variance coefficients were moderate, and Analyses of Variance resulted in significant differences between and within provinces. Three clusters were defined based on spatial model for cluster membership for quantitative traits. One cluster grouped the individuals from the Paranaense biogeographic province whereas the individuals from the Yungas biogeographic province grouped regarding its population of origin. Parameters of molecular genetic variability showed higher values in the Yungas than in the Paranaense biogeographic province. Observed heterozygosity was lower than expected heterozygosity in both biogeographic provinces indicating an excess of homozygosity. The homozygosity test by Watterson and the exact test by Slatkin suggested diversifying selection for locus Ac41.1. Bayesian clustering spatial model for microsatellites loci data were performed for both all loci and all loci excluding locus Ac41.1. In both analyses two clusters were inferred. AMOVAs revealed similar results for all genotypes and for all genotypes defined excluding locus Ac41.1. Most of the total variance is attributable to genetic variation within clusters. The presence of homogeneous clusters was detected for both the phenotypic and molecular genetic variability. Two Bayesian clustering analyses were performed according to molecular genetic data, and two clusters were inferred. Individuals were assigned to their provinces of origin. Genetic molecular variation was higher in the populations of the Yungas biogeographic province which translates in highly qualified populations for conservation. Populations from the Paranaense biogeographic province showed the highest mean value of number of seeds per fruit making them valuable as well with regard to the exploitation of management strategies as a means to recover the impacted areas where these populations are located.Fil: García, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas; ArgentinaFil: Prinz, Kathleen. Universität Göttingen; Alemania. Universitat Jena; AlemaniaFil: Barrandeguy, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas; ArgentinaFil: Miretti, Marcos Mateo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas; ArgentinaFil: Finkeldey, Reiner. Universitat Jena; Alemani

Análisis del proceso de compactación en una escombrera de sal

Introducción general a la formación de los materiales salinos y se explican los procesos deformacionales más característicos que actúan sobre ellos, en base a información bibliográfica actualizada. El objetivo, de esta tesina es el estudio del proceso de compactación sufrida por los residuos de sal, debido a su propio peso, desde su colocación en una escombrera minera. Debido al confinamiento y a la presencia de agua, los granos de sal sufren un proceso de disolución y recristalización parecido una cementación que aumenta la resistencia de sal. La tesina trata de estudiar este fenómeno en base a la caracterización en el laboratorio de muestras procedentes de la escombrera de sal de Súria: medida de la densidad, humedad, porosidad, resistencia a la compresión simple y módulo de elasticidad de muestras extraídas a diferentes profundidades

Social aspects as regards the time factor: an analysis of the work process in a virtual group.

The aim of this article is to analyze how social aspects are created according to the time factor in a virtual work group. Although these informal or emotional aspects are often undervalued or separated from those of learning, there are numerous studies into educational environments that show how social aspects play a basic, necessary role in a groups' success, taking into account the fact that this is responsible for the climate created, the perceived feeling of community and the learning carried out. Using this eminently qualitative process to analyse the different degree subjects studied at the Universitat Oberta de Catalunya, the study focuses on identifying features associated with the time factor, which have implications in establishing the social side of virtual group work. Specifically, three elements have been detected that are associated with: Individual aspects, group dynamics and teaching staff intervention. The article also analyses the repercussions of features on the social side, noting that the time factor is significantly involved in forming the social dimension

Engagement, Flow, Self-Efficacy, and Eustress of University Students: A Cross-National Comparison Between the Philippines and Argentina

This study examined how self-efficacy, eustress, and flow interact with academic engagement. First, it aimed to test a theoretical model that proposes that self-efficacy and eustress promote both flow and engagement and that, in turn, the state of flow promotes academic engagement in undergraduate student. We hypothesized that the theoretical model would be invariant for two countries: the Philippines and Argentina. Secondly, this research aimed to compare the levels of self-efficacy, eustress, study-flow and academic engagement experiences in students from both countries. One hundred seventy-six Filipinos and 171 Argentinean students participated in the study by completing inventories using the Utrecht Student Engagement Scale (Schaufeli, Martínez, et al., 2002), Optimal Experience Survey (Mesurado, 2008), Self-efficacy Scale (O'Sullivan, 2011), and Eustress Scale (O'Sullivan, 2011). Results show that the theoretical model fits the data well in both countries and is invariant across the Philippines and Argentina. Self-efficacy has a positive effect on flow and engagement, whereas eustress has a significant positive relationship with flow but is not directly associated with engagement. However, eustress has an indirect effect, through flow, on student engagement. On the other hand, there are different levels of engagement, flow, self-efficacy, and eustress. Argentinean students scored higher on absorption, dedication, self-efficacy, and flow. Filipino students, meanwhile, scored higher on eustress.Fil: Mesurado, Maria Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro Interdisciplinario de Investigaciones en Psicología Matemática y Experimental Dr. Horacio J. A. Rimoldi; ArgentinaFil: Richaud, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro Interdisciplinario de Investigaciones en Psicología Matemática y Experimental Dr. Horacio J. A. Rimoldi; ArgentinaFil: Nino, Jose Mateo. de la Salle University; Filipina

Característiques sensorials de la garnatxa negra de la DOQ Priorat

El tractament estadístic de les dades de tast dels vins de la DOQ Priorat indica els principals trets dels vins de garnatxa negra d'aquesta DOQ, i mostra les aromes afruitades i el postgust com a trets característics. Diferencia clarament els vins segons l'origen varietal i en funció de la zona de producció. També s'observa una diferència anual. Es mostra un efecte sinèrgic entre la garnatxa negra i la carinyena o samsó.El tratamiento estadístico de los datos de cata de los vinos de la DOC Priorat indica los principales rasgos de los vinos de garnacha tinta de esta DOC, mostrando los aromas frutales y el posgusto como rasgos característicos. Diferencia claramen- te los vinos según el origen varietal y en función de la zona de producción. Sin duda también se observa una diferencia anual. También se muestra un efecto sinérgico entre la garnacha tinta y la cariñena o mazuelo.The statistical processing of the wine tasting data from the DOQ Priorat reveals the main features of the Grenache Noir wines of this Qualified Designation of Origin, showing that fruity aromas and aftertaste are their characteristic features. Moreover, it clearly differentiates the wines according to their varietal origin and production area. An annual difference is also observed and a synergic effect is shown to exist between Grenache Noir and Carignan or Samsó