49 research outputs found

    5G Radio Resource Allocation for Communication and Computation Offloading

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    Edge computing is envisioned as a key enabler in future cellular networks by bringing the computing, networking and storage resources closer to the end users and enabling offloading for computation-intensive or latency-critical tasks coming from the emerging 5G/6G applications. Such technology also introduces additional challenges when it comes to deciding when to offload or not since the dynamic wireless environment plays a significant role in the overall communication and computation costs when offloading workload to the nearby edge nodes. In this paper, we focus on the communication cost in computation offloading via wireless channels, by formulating an α -fair utility-based radio resource allocation (RRA) problem tailored for offloading in a multi-user urban scenario where the uplink connection is the main focus. We begin by modeling the wireless channel with large- and small-scale fading at both lower and millimetre-wave frequencies, followed by data rate calculation based on 3GPP for a more realistic approach. Then, while assessing the fairness of the RRA, we simulate the resource allocation framework while taking into account both users who need to offload and users who are only interested in high downlink data rates. Simulation results show that the weighted proportional fairness method adapted for computation offloading can provide a good trade-off between fairness and performance compared to other benchmark schemes

    Expresión gráfica, diseño geométrico y demolición de los Laboratorios Jorba de Fisac. El patrimonio sin protección

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    The sensibility and the actions in the protection of the historical Heritage it is one of the strong points in the cultural policies. Nevertheless, when we refer to the protection and conservation of the contemporary Heritage the legal regulation does not produce the efficiency that would be desirable and the lagoons and the lack of application of the legislations does that it could lose part of our more recent history. This one is the case of the buildings of the Laboratories Jorba by Fisac; a geometric reference of the Spanish Architecture of the twentieth century that was knocked down without the opposition of the competent Public Administrations.La sensibilidad y las actuaciones en la protección del patrimonio histórico es uno de los puntos fuertes en las políticas culturales. Sin embargo, cuando nos referimos a la protección y conservación del patrimonio contemporáneo la normativa no produce la eficacia que sería deseable, y las lagunas y la falta de aplicación de las legislaciones hace que se pueda perder parte de nuestra historia más reciente. Este es el caso de los edificios de los Laboratorios Jorba de Fisac; un hito geométrico referencial de la arquitectura española del siglo XX que fue derribado sin la oposición de las administraciones públicas competentes

    Graphic expression, geometric design and demolition of the Laboratories Jorba by Fisac. The heritage without protection

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    La sensibilidad y las actuaciones en la protección del patrimonio histórico es uno de los puntos fuertes en las políticas culturales. Sin embargo, cuando nos referimos a la protección y conservación del patrimonio contemporáneo la normativa no produce la eficacia que sería deseable, y las lagunas y la falta de aplicación de las legislaciones hace que se pueda perder parte de nuestra historia más reciente. Este es el caso de los edificios de los Laboratorios Jorba de Fisac; un hito geométrico referencial de la arquitectura española del siglo XX que fue derribado sin la oposición de las administraciones públicas competentes.The sensibility and the actions in the protection of the historical Heritage it is one of the strong points in the cultural policies. Nevertheless, when we refer to the protection and conservation of the contemporary Heritage the legal regulation does not produce the efficiency that would be desirable and the lagoons and the lack of application of the legislations does that it could lose part of our more recent history. This one is the case of the buildings of the Laboratories Jorba by Fisac; a geometric reference of the Spanish Architecture of the twentieth century that was knocked down without the opposition of the competent Public Administrations

    El paso de la investigación a la docencia. Componentes interdisciplinares e internacionales en las disciplinas técnicas y humanísticas

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    La aplicación docente en los ámbitos de conocimientos técnicos y humanísticos de la investigación interdisciplinar procedente de la Arquitectura, la Ingeniería y el Arte es una de las innovaciones que se han implementado en la Universidad de Granada al amparo del desarrollo del Espacio Europeo de Educación Superior. El trabajo que presentamos tiene como objeto de estudio la realización de una comparación evolutiva a lo largo del tiempo entre los distintos proyectos de innovación docentes realizados por los profesores y las profesoras de la Universidad de Granada integrantes del Seminario Internacional de Patrimonio y Diseño Geométrico, analizando el desarrollo docente y el aprendizaje del alumnado desde la perspectiva inicial basada en la experiencia de la propia Universidad y su integración en el E.E.E.S., hasta su llegada a la internacionalización con la participación de varias Universidades Latinoamericanas. Para ello se tomó la expresión gráfica, propia de las ingenierías y la arquitectura, y el patrimonio artístico referente de las disciplinas humanísticas, como elementos fundamentales en el planteamiento de una metodología docente basada en el aprendizaje por proyectos (APP) en la cual el alumnado es protagonista, junto con el profesorado, de la transferencia de investigación, empleando las TIC que permitieron el uso compartido por parte de universidades españolas y latinoamericanas de los recursos generados en este programa de innovación docente

    Constellation multiplexing and non-orthogonal multiple access based on carrierless amplitude phase modulation

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    The present disclosure relates to a receiver configured to receive a carrierless amplitude and phase (CAP) modulated signal, wherein the signal has been further multiplexed in a power domain, said receiver being configured to: demodulate the received carrierless amplitude and phase (CAP) modulated signal; and further demultiplex the signal in the power domain by applying successive interference cancellation (SIC). The disclosure further relates to a corresponding transmitter configured to: modulate a signal by applying carrierless amplitude and phase modulation (CAP); multiplex the signal in a power domain; and transmit the carrierless amplitude and phase modulated, frequency multiplexed and power multiplexed signal

    Mineral Profile in Soil and Forages of Rangelands of the Huasteca Potosina, Mexico

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    Mineral imbalances in soils and forages may cause suboptimal production of forage biomass and livestock. Objective: To determine the concentrations of minerals in soil and forage during the dry and wet seasons in the Huasteca Potosina. Materials and Methods: Samples from the soil and the main forage species consumed by livestock were collected in 17 production units (PU). The P content in soil and forage was determined by colorimetry, while the Ca, Mg, Cu, Fe, Zn, Mn, and Co content was established by atomic absorption spectrophotometry, and flame photometry was used to calculate Na and K content. The data were subjected to an analysis of variance; the effect of PU, season, and interactions was considered as fixed effect. Means were compared using Tukey’s test. Results and Discussion: P and Cu content was below the minimum critical level required for adequate plant growth. Furthermore, the P, Mg, K, Na, Cu, Co, and Zn concentration in forage failed to meet the minimum requirements for livestock. Conclusions: The mineral imbalances in the grazing areas and the forages do not meet the minimum mineral requirements of dual-purpose cattle in the Huasteca Potosina

    Humoral and Cellular Immune Responses After a 3-dose Course of mRNA-1273 COVID-19 Vaccine in Kidney Transplant Recipients: A Prospective Cohort Study.

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    In kidney transplant recipients, there is discordance between the development of cellular and humoral response after vaccination against SARS-CoV-2. We sought to determine the interplay between the 2 arms of adaptive immunity in a 3-dose course of mRNA-1273 100 μg vaccine. Methods: Humoral (IgG/IgM) and cellular (N- and S-ELISpot) responses were studied in 117 kidney and 12 kidney-pancreas transplant recipients at the following time points: before the first dose, 14 d after the second dose' and before and after the third dose, with a median of 203 and 232 d after the start of the vaccination cycle, respectively. Results: After the second dose, 26.7% of naive cases experienced seroconversion. Before the third dose and in the absence of COVID-19, this percentage increased to 61.9%. After the third dose, seroconversion occurred in 80.0% of patients. Naive patients who had at any time point a detectable positivity for S-ELISpot were 75.2% of the population, whereas patients who maintained S-ELISpot positivity throughout the study were 34.3%. S-ELISpot positivity at 42 d was associated with final seroconversion (odds ratio' 3.14; 95% confidence interval' 1.10-8.96; P = 0.032). Final IgG titer was significantly higher in patients with constant S-ELISpot positivity (P < 0.001). Conclusions: A substantial proportion of kidney transplant recipients developed late seroconversion after 2 doses. Cellular immunity was associated with the development of a stronger humoral respons

    Análisis del impacto de la miasis por Cochliomyia hominivorax sobre la producción ganadera en Argentina

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    El término “miasis” se define como la infestación de animales vertebrados con larvas de dípteros, las cuales durante un cierto período se alimentan de los tejidos del hospedador (Zumpt, 1965). De acuerdo a su localización, las miasis se clasifican en cavitarias y cutáneas. Entre los dípteros productores de estas últimas, aquellas especies pertenecientes a la familia Calliphoridae son las de mayor distribución mundial y se incluyen dentro de los géneros Chrysomyia, Cochliomyia, Lucilia, Calliphora y Phornia. Sin embargo, solo un número relativamente pequeño de especies pertenecientes a los tres primeros géneros son considerados como de importancia clínica o económica.EEA RafaelaFil: Signorini, Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; ArgentinaFil: Signorini, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea; ArgentinaFil: Anziani, Oscar S. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: Rossner, Maria Victoria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Colonia Benítez; ArgentinaFil: Gamietea, Ignacio José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Pedro. Agencia de Extensión San Pedro; ArgentinaFil: Micheloud, Juan Francisco. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina.Fil: Lloberas, María Mercedes. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.Fil: Martinez, Norberto Claudio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Reconquista. Agencia de Extensión Rural Garabato; ArgentinaFil: Olmos, Leandro Hipolito. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina.Fil: Sarmiento, Nestor Fabian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mercedes; ArgentinaFil: Abdala, Alejandro Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; ArgentinaFil: Abdala, Alejandro Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea; ArgentinaFil: Callaci, Carlos Ruben. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; ArgentinaFil: Callaci, Carlos Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea; ArgentinaFil: Bresky, Florencia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Colonia Benítez; ArgentinaFil: Zimmer, Patricia Andrea. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria El Colorado. Agencia de Extensión Rural Formosa; ArgentinaFil: Da Luz, Miguel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cerro Azul; ArgentinaFil: Reinaldi, Javier Aníbal. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Quimili. Agencia de Extensión Rural Quimili; ArgentinaFil: Pereda, Ariel Julian. Instituto Nacional de Tecnología Agropecuaria (INTA). Programa Salud Animal; ArgentinaFil: Nava, Santiago. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; ArgentinaFil: Nava, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea; Argentin

    Measurement of the cosmic ray spectrum above 4×10184{\times}10^{18} eV using inclined events detected with the Pierre Auger Observatory

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    A measurement of the cosmic-ray spectrum for energies exceeding 4×10184{\times}10^{18} eV is presented, which is based on the analysis of showers with zenith angles greater than 6060^{\circ} detected with the Pierre Auger Observatory between 1 January 2004 and 31 December 2013. The measured spectrum confirms a flux suppression at the highest energies. Above 5.3×10185.3{\times}10^{18} eV, the "ankle", the flux can be described by a power law EγE^{-\gamma} with index γ=2.70±0.02(stat)±0.1(sys)\gamma=2.70 \pm 0.02 \,\text{(stat)} \pm 0.1\,\text{(sys)} followed by a smooth suppression region. For the energy (EsE_\text{s}) at which the spectral flux has fallen to one-half of its extrapolated value in the absence of suppression, we find Es=(5.12±0.25(stat)1.2+1.0(sys))×1019E_\text{s}=(5.12\pm0.25\,\text{(stat)}^{+1.0}_{-1.2}\,\text{(sys)}){\times}10^{19} eV.Comment: Replaced with published version. Added journal reference and DO

    Effectiveness of a strategy that uses educational games to implement clinical practice guidelines among Spanish residents of family and community medicine (e-EDUCAGUIA project):A clinical trial by clusters

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    This study was funded by the Fondo de Investigaciones Sanitarias FIS Grant Number PI11/0477 ISCIII.-REDISSEC Proyecto RD12/0001/0012 AND FEDER Funding.Background: Clinical practice guidelines (CPGs) have been developed with the aim of helping health professionals, patients, and caregivers make decisions about their health care, using the best available evidence. In many cases, incorporation of these recommendations into clinical practice also implies a need for changes in routine clinical practice. Using educational games as a strategy for implementing recommendations among health professionals has been demonstrated to be effective in some studies; however, evidence is still scarce. The primary objective of this study is to assess the effectiveness of a teaching strategy for the implementation of CPGs using educational games (e-learning EDUCAGUIA) to improve knowledge and skills related to clinical decision-making by residents in family medicine. The primary objective will be evaluated at 1 and 6months after the intervention. The secondary objectives are to identify barriers and facilitators for the use of guidelines by residents of family medicine and to describe the educational strategies used by Spanish teaching units of family and community medicine to encourage implementation of CPGs. Methods/design: We propose a multicenter clinical trial with randomized allocation by clusters of family and community medicine teaching units in Spain. The sample size will be 394 residents (197 in each group), with the teaching units as the randomization unit and the residents comprising the analysis unit. For the intervention, both groups will receive an initial 1-h session on clinical practice guideline use and the usual dissemination strategy by e-mail. The intervention group (e-learning EDUCAGUIA) strategy will consist of educational games with hypothetical clinical scenarios in a virtual environment. The primary outcome will be the score obtained by the residents on evaluation questionnaires for each clinical practice guideline. Other included variables will be the sociodemographic and training variables of the residents and the teaching unit characteristics. The statistical analysis will consist of a descriptive analysis of variables and a baseline comparison of both groups. For the primary outcome analysis, an average score comparison of hypothetical scenario questionnaires between the EDUCAGUIA intervention group and the control group will be performed at 1 and 6months post-intervention, using 95% confidence intervals. A linear multilevel regression will be used to adjust the model. Discussion: The identification of effective teaching strategies will facilitate the incorporation of available knowledge into clinical practice that could eventually improve patient outcomes. The inclusion of information technologies as teaching tools permits greater learning autonomy and allows deeper instructor participation in the monitoring and supervision of residents. The long-term impact of this strategy is unknown; however, because it is aimed at professionals undergoing training and it addresses prevalent health problems, a small effect can be of great relevance. Trial registration: ClinicalTrials.gov: NCT02210442.Publisher PDFPeer reviewe
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