En proceso constante: medios sociales para la enseñanza de Ciencias Sociales

Superado en cierta manera aquel dilema de las universidades españolas en que, sin intención de deshonrar su tradición académica, se debatían entre el protagonismo de las TIC o el de la tiza, las instituciones de enseñanza superior afrontan una nueva era entre profesores emigrantes digitales y alumnos nativos digitales. Aun aceptando que las tecnologías de la información y la comunicación pueden generar interacción y trabajo de calidad, otros son los problemas hoy: costes para generar recursos, el uso de los medios sociales y e-Learning como fuente de ingresos de unas universidades aquejadas de recortes o la definición de un nuevo clima de aula virtual entre docentes y dicentes son algunas de los cuestiones que el presente trabajo se plantea abordar

Igualdad entre sexos en la enseñanza con TICs

Las posibilidades que hoy día ofrecen las Redes Sociales en la Educación Universitaria, siguiendo el camino abierto por las TICS, son innegables. Aunque si bien estas nuevas herramientas de contacto virtual y social ofrecen innumerables ventajas (personal, laboral, comercialmente...) suponen a su vez nuevos peligros que pueden, incluso, llegar a reproducir ciertos estereotipos sociales ligados al género. El fin último de esta comunicación es guiar al conjunto de los actores del proceso de enseñanza aprendizaje en la utilización de un espacio educativo donde se debe prestar especial atención a la igualdad de oportunidades entre ambos sexos. Para ello se prestará especial atención a las distintas iniciativas que se han llevado a cabo por parte de algunas universidades españolas que son ejemplo de cómo usar las tecnologías en un entorno globalizado en el que debe prevalecer la igualdad de sexos

Second Order Statistics of -Fisher-Snedecor Distribution and Their Application to Burst Error Rate Analysis of Multi-Hop Communications

An advantage of using the composite fading models (CFMs) is their ability to concurrently address the impact of multi-path and shadowing phenomena on the system performance in wireless communications. A Fisher-Snedecor (FS) F CFM has been recently proposed as an experimentally verified and tractable fading model that can be efficiently applied for 5G and beyond 5G wireless communication systems. This paper provides second-order (s-order) performance analysis of the product of N independent but not identically distributed (i.n.i.d) FS F random variables (RVs). In particular, accurate and closedform approximations for level crossing rate (LCR) and average fade duration (AFD) of the product of N i.n.i.d FS F(N-FS F) RVs are successfully derived by exploiting a general property of a Laplace approximation method for evaluation of the N -folded integral-form LCR expression. Based on the obtained s-order statistical results, the burst error rate and maximum symbol rate of the N -FS F distribution are addressed and thoroughly examined. The numerical results of the considered performance measures are discussed in relation to the N-FS F multi-path and shadowing severity parameters. Moreover, the impact of the number of hops (N) of the N -FS F CFM on the s-order metrics, the burst error rate and maximum symbol rate are numerically evaluated and investigated. The derived s-order statistical results can be used to address the cooperative relay-assisted (RA) communications for vehicular systems. Monte-Carlo (M - C) simulations for the addressed statistical measures are developed in order to confirm the provided theoretical results.This work was supported in part by UC3M and the European Union's Horizon 2020 Programme under the Marie Sklodowska-Curie Grant through the CONEX-Plus Project under Agreement 801538; in part by the IRENE-EARTH Project under Grant PID2020-115323RB-C33/AEI/10.13039/501100011033; in part by ERDF and the Spanish Government Projects under Grant PID2019-106808RA-I00 AEI/FEDER, UE; in part by CDTI Cervera Project INTEGRA under Grant CER-20211031; in part by the Secretaria d'Universitats i Recerca de la Generalitat de Catalunya under Project 2017-SGR-00376 and Project Fem IoT under Grant 001-P-001662; in part by the European Commission Project CPSoSaware; and in part by the Cost Actions under Grant CA19111, Grant CA20120, and Grant CA16220.Publicad

Traditional houses in the South-Western Iberian Peninsula: Themes for a cross-border comparative typological study

[EN] Up until the 13th century, the South-western Iberian Peninsula shared the same cultural and political conditions under the rule of garb-Al-Andaluz. The administrative separation of this territory between two different kingdoms led to deep changes in the culture and daily life on either side of the border, which may have reflected on housing structures. Did the 13th-century border between Spain and Portugal trigger divergent paths in housing types? Or has the previous common background prevailed in shaping house models in the territory around the Guadiana Valley? This paper proposes a set of themes to begin a cross-border study on the traditional house, its changes and continuities. The research is based on in loco architectonic surveys of common houses in the Algarve, Alentejo (Portugal) and Andalusia (Spain). The buildings are analysed as regard their spatial organizations, constructive techniques and urban implantation allowing some themes of change and continuity to emerge. This then allows comparisons between the types of traditional houses in these border regions, their common characteristics, differences and evolution paths. It is noticeable that, given how the South-western Iberia represents the same territorial unit in terms of climate and orography, and – until the 13th century – shared the same historical context, the urban similarities were profound. It is therefore almost surprising how divergent the housing evolution between the two sides would become. The study of housing architecture is of particular relevance to the history of people as the variations reflect how the habits and customs of societies. Especially in societies sharing the same starting point, it shows how habits and customs may diverge after separation into two different administrative entities.The research is part of the IAPH (Instituto Andaluz del Patrimonio Histórico) project “Sistema de Innovación para el Patrimonio de la Andalucía Rural”, ref. PY20_00298, co-funded by ERDF 2014-2020, and of CEAACP project UIDB/00281/2020 funded by Fundação para a Ciência e Tecnologia – Portugal.Costa Rosado, A.; Gómez-Martinez, V.; Costa, M.; Pérez-Cano, MT. (2022). Traditional houses in the South-Western Iberian Peninsula: Themes for a cross-border comparative typological study. Editorial Universitat Politècnica de València. 71-78. https://doi.org/10.4995/HERITAGE2022.2022.14497717

Peritoneal water transport characteristics of diabetic patients undergoing peritoneal dialysis: a longitudinal study

[Abstract] Background: Volume overload is frequent in diabetics undergoing peritoneal dialysis (PD), and may play a significant role in the excess mortality observed in these patients. The characteristics of peritoneal water transport in this population have not been studied sufficiently. Method: Following a prospective, single-center design we made cross-sectional and longitudinal comparisons of peritoneal water transport in 2 relatively large samples of diabetic and nondiabetic PD patients. We used 3.86/4.25% glucose-based peritoneal equilibration tests (PET) with complete drainage at 60 min, for these purposes. Main Results: We scrutinized 59 diabetic and 120 nondiabetic PD patients. Both samples showed relatively similar characteristics, although diabetics were significantly more overhydrated than nondiabetics. The baseline PET disclosed lower ultrafiltration (mean 439 mL diabetics vs. 532 mL nondiabetics, p = 0.033) and sodium removal (41 vs. 53 mM, p = 0.014) rates in diabetics. One hundred and nine patients (36 diabetics) underwent a second PET after 12 months, and 45 (14 diabetics) underwent a third one after 24 months. Longitudinal analyses disclosed an essential stability of water transport in both groups, although nondiabetic patients showed a trend where an increase in free water transport (p = 0.033) was observed, which was not the case in diabetics. Conclusions: Diabetic patients undergoing PD present lower capacities of ultrafiltration and sodium removal than their nondiabetic counterparts. Longitudinal analyses disclose an essential stability of water transport capacities, both in diabetics and nondiabetics. The clinical significance of these differences deserves further analysis

Genetic Variability in Ruditapes Decussatus Clam Combined With Perkinsus Infection Level to Support Founder Population Selection for a Breeding Program

[Abstract] Clam farmers worldwide face several challenges, including irregular seed supply and high mortalities due to pathogenic organisms such as "Perkinsus olseni". In Europe, there is a high unmet consumer demand for native clam species such as "Ruditapes decussatus". The high market value of "R. decussatus" makes the culture of this species potentially more attractive than that culture of the alien species "Ruditapes philippinarum". Thus, there is a market opportunity in breeding and producing "R. decussatus" at an industrial scale. A selective breeding program to improve "R. decussatus" performance will be carried out in Portugal; and the first critical step to develop such a breeding program is the establishment of a founder population. In this study, intra- and interpopulation genetic diversity was assessed using 13 microsatellite markers in eight natural beds located in Portugal, Spain and Italy. Also, allele and genotypic frequencies of each microsatellite locus were assessed discriminating between clams infected and non-infected by "P. olseni". All locations showed similar values for several genetic diversity parameters. Analyses of population differentiation (FST, Bayesian clustering and AMOVAs) revealed five genetically differentiated regions: Rías Altas and Rías Baixas (NW Spain), North/Central Coast of Portugal, Gulf of Cadiz and Adriatic Sea. Significant differences in the allelic and genotypic frequency distribution between infected clams and non-infected ones at four microsatellite loci are reported suggesting that resistance to the disease could have a genetic basis. Moreover, a positive or negative relationship between the frequency of certain alleles and the parasite infection was inferred. Further studies should confirm the potential use of those alleles as genetic markers for "P. olseni" infection. Integrating results of genetic diversity within and between populations and Perkinsus infection levels, a founder population for a "R. decussatu" breeding program is proposed, composed by individuals from Barallobre (Rías Altas), Pontevedra or Cangas (Rías Baixas), Óbidos (North/Central Coast of Portugal), Algarve (Gulf of Cadiz) and Venice (Adriatic Sea).Governo da República Portuguesa; 22390 (16/SI/2016) (CENTRO-01-0247-FEDER-022390)Ministério do Mar (Portugal); FA_01_2017_00

Barracks from modern age iberian wars (1650-1750) heritage value, contemporary use and social housing

The present paper studies 18th century military garrisons built in border villages of Portuguese Alentejo during the instability period that began with the Restoration War (1640-1668) between Portugal and Spain. Besides presenting their constructive types and materiality, the research focus on the heritage value of these barracks, especially given their urban context inside small peripheral towns’ historical centres under threat of desertification. Three cases are compared in order to determine which contemporary use better favours heritage conservation of the barracks modular structures

Factores de rendimiento en el desplazamiento del tenista influenciados por el calzado.

Los desplazamientos laterales son de gran importancia en el tenis. Sin embargo, no ha sido publicado ningún estudio sobre el efecto del calzado sobre el rendimiento en este tipo de movimientos. En el estudio participaron 5 jugadores habituales de tenis y se analizaron 10 calzados comerciales de tenis. El movimiento estudiado consistió en un desplazamiento lateral con parada y cambio de sentido, registrándose las fuerzas mediante una plataforma dinamométrica Dinascan-IBV y grabándose el movimiento con dos cámaras de vídeo S-VHS Panasonic WV-BL600. Los resultados de los ANOVAs realizados mostraron que algunas de las variables analizadas eran dependientes del calzado (p < 0.05). De éstas, destacan (1) la supinación máxima de la subastragalina y (2) el tiempo de apoyo. Se detectaron varias correlaciones (Pearson) significativas (p < 0.05) de especial relevancia, destacando la correlación positiva entre el tiempo de apoyo con los máximos de supinación. Como el impulso mecánico no se ha visto afectado por el calzado, esto indica que el calzado que limita la supinación permite realizar el movimiento analizado en un menor tiempo.Sideward cutting movements are very important in tennis. However, no studies on their effect on performance have been published. 5 tennis players (age 21.5 ± 0.8, weight 75.2 ± 2.8 kg, height, 1.78 ± 0.05 m) participated in the study on a voluntary basis and 10 tennis shoes were analysed. Subjects perform a sideward cutting movement. An extensometric force plate (Dinascan-IBV) was used to record the kinetic variables and 2 video cameras (Panasonic-WV-BL600) were utilized for the kinematic variables. ANOVA results showed several variables as shoe-dependent (p < 0.05), among these stands out (1) rearfoot supination movement and (2) contact time. Moreover these variables were positively correlated (p < 0.05). As mechanical impulse was not change, this means that shoes that limit supination allow perform sideward cutting movements [email protected] [email protected] [email protected]

La casa del vecino: Tipos y evolución en la arquitectura doméstica tradicional del Guadiana portugués

La arquitectura doméstica refleja, mejor que ninguna otra, la cultura de un lugar, las costumbres, las vivencias de sus gentes. Se rige por las directrices de su territorio, los terrenos, los materiales, los condicionantes climáticos y por eso, ni puede ser estudiada fuera de su contexto, ni el paisaje de un lugar se explica sin su arquitectura vernácula. Pero ¿y cuándo de un mismo territorio físico resultan modelos dispares? Este artículo revisa la casa tradicional del Alentejo portugués, concretamente, el margen izquierdo del Guadiana, a través de levantamientos in loco y el estudio de documentación de archivo. Se presenta como caso de estudio la ciudad de Moura, donde el análisis de 143 casos ha permitido establecer una línea de evolución de la vivienda y definir varias categorías de tipos de casa tradicional. Se presentan estos tipos, sus materialidades, las técnicas constructivas de la región y una similitud transfronteriza. Si por el mismo contexto histórico y territorial, las afinidades de ocupación territorial y urbana entre el Guadiana portugués y la Baja Extremadura/Sierra de Aracena resultan casi obvias, resultarán más sorprendentes las diferencias que experimentará la evolución de la vivienda entre los dos márgenes del Guadiana