207 research outputs found

    La comunicación 2.0 en las universidades públicas andaluzas

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    La comunicación digital no consiste simplemente en poseer un perfil, sino en gestionarlo adecuadamente y relacionarse con el público al que se dirige. Por ello, esta investigación tratará de averiguar qué herramientas digitales están utilizando estas instituciones y analizar el uso que se les está dando. Para ello, se realizará un análisis de contenido de sus perfiles en redes sociales, además de sus páginas webs, para llegar a unas conclusiones sólidas acerca de qué es lo que la universidad comunica digitalmente

    Rasgos funcionales de la madera de tres bosques en Colombia: Bosque Seco, Andino y Alto-Andino

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    This research analyzed twelve (12) wood functional traits in 144 species of three forests in Colombia. The traits were classified according to their incidence in the functions of storage, support and conduction in the xylem. The conduction relations in the three forests suggest that when the pores diameter is big, its density decrease, and at the same time the pits diameter increase, as a strategy to guarantee exchange between vessels. The tracheid length is related to the fibers length and the pores diameter, because the tracheids fulfill both functions: conduction and support. Tracheids are only in the Andean and High Andean Forest species. The species of the High Andean Forest have long and wide rays allowing greater storage capacity and horizontal conduction. In the Andean Forest species, the fibers length and tracheids length were higher. The Dry forest species had the highest wood densities, however, the values of fiber length and thickness fiber were the lowest, reducing their support capacity. Six functional plant types (TFPs) are established and described from the evaluated traits.Se analizan 12 rasgos funcionales asociados a la madera en 144 especies vegetales de tres bosques en Colombia. Se clasificaron los rasgos según su incidencia en las funciones de almacenamiento, soporte y conducción del xilema. Las relaciones de conducción en los tres bosques sugieren que, a mayor diámetro de poros, menor es la densidad de los mismos y mayor es el diámetro de las punteaduras, como estrategia para garantizar el intercambio intervascular. La longitud de las traqueidas se relaciona con la longitud de fibras y el diámetro de poros, estas estructuras apoyan tanto la función de conducción como la de soporte. Las traqueidas están únicamente en las especies del Bosque Andino y Alto-Andino. Las especies del Bosque Alto-Andino tienen radios largos y anchos permitiendo mayor capacidad de almacenamiento y conducción horizontal. En especies del Bosque Andino la longitud de fibras y traqueidas fue mayor. Las especies de bosque seco tenían las densidades de madera más altas, sin embargo, los valores de longitud y espesor de la fibra eran los más bajos, reduciendo su capacidad de soporte. A partir de los rasgos evaluados se establecen y describen seis tipos funcionales de plantas (TFPs)

    Analysis of the Vehicle-Bicycles Interaction on Two-Lane Rural Roads Using a Driving Simulator Based on Field Data

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    [EN] The presence of cyclists on Spanish two-lane rural roads is common, so they have to interact with motor vehicles. Due to the speed differential and vulnerability of cyclists, overtaking is one of the most dangerous and frequent interactions. Therefore, a minimum distance of 1.5 m must be observed. The overtaking maneuver depends on road section and cyclist group distribution. Interaction between cyclists and vehicles has been characterized in the past but overtaking to cyclist groups has barely been studied. This study uses a driving simulator to analyze how the presence of cyclists and their group configuration affect traffic operation and safety on two-lane rural roads. A fixed driving simulator has been adapted to incorporate cyclists, using speed and lateral position obtained from field studies. Based on field data, a physical scenario and different traffic scenarios have been recreated, so volunteers can drive the simulator ¿ emulating a motor vehicle ¿ tracking their speed, lateral position, and other variables. These results can be compared to those observed for checking the validity of this methodology. The driving simulator offers some results which are difficult to obtain through other methodologies, enabling a better analysis of the phenomenon. By sorting different bicycle patterns and including several volunteers, the impact of bicycle pelotons on traffic performance and safety can be characterized. This will help in offering recommendations to integrate cyclists and motor vehicles in a safer way.This study was part of a research project titled Improvement of safety and operation of twolane rural roads with cyclists (Bike2Lane) (TRA 2016-8089-R) subsidized by Spanish Ministry of Science and Innovation. In addition, the authors would like to thank the Road Department of the Valencian Provincial Council, and General Directorate of Traffic of Spain, for their cooperation in field data gathering.Dols Ruiz, JF.; Molina, J.; Moll Montaner, S.; López-Maldonado, G.; Camacho-Torregrosa, FJ.; García García, A. (2021). Analysis of the Vehicle-Bicycles Interaction on Two-Lane Rural Roads Using a Driving Simulator Based on Field Data. Universidad de Burgos. 1363-1376. https://doi.org/10.36443/97884184651231363137

    Analysis of the vehicle-bicycles interaction on two-lane rural roads using a driving simulator based on field data

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    [EN] The presence of cyclists on Spanish two-lane rural roads is common, so they have to interact with motor vehicles. Due to the speed differential and vulnerability of cyclists, overtaking is one of the most dangerous and frequent interactions. Therefore, a minimum distance of 1.5 m must be observed. The overtaking manoeuvre depends on road section and cyclist group distribution. Interaction between cyclists and vehicles has been characterized in the past but overtaking to cyclist groups has barely been studied. This study uses a driving simulator to analyse how the presence of cyclists and their group configuration affect traffic operation and safety on two-lane rural roads. A fixed driving simulator has been adapted to incorporate cyclists, using speed and lateral position obtained from field studies. Based on field data, a physical scenario and different traffic scenarios have been recreated, so volunteers can drive the simulator ¿ emulating a motor vehicle ¿ tracking their speed, lateral position, and other variables. These results can be compared to those observed for checking the validity of this methodology. The driving simulator offers some results which are difficult to obtain through other methodologies, enabling a better analysis of the phenomenon. By sorting different bicycle patterns and including several volunteers, the impact of bicycle pelotons on traffic performance and safety can be characterized. This will help in offering recommendations to integrate cyclists and motor vehicles in a safer way.This study was part of a research project entitled Improvement of safety and operation of two-lane rural roads with cyclists (Bike2Lane) (TRA 2016-8089-R) subsidized by Spanish Ministry of Science and Innovation. In addition, the authors would like to thank the Road Department of the Valencian Provincial Council, and General Directorate of Traffic of Spain, for their cooperation in field data gathering.Dols Ruiz, JF.; Molina, J.; Moll Montaner, S.; López-Maldonado, G.; Camacho-Torregrosa, FJ.; García García, A. (2021). Analysis of the vehicle-bicycles interaction on two-lane rural roads using a driving simulator based on field data. Transportation Research Procedia. (58):543-550. https://doi.org/10.1016/j.trpro.2021.11.0725435505

    Estudio de campo sobre las condiciones de confort térmico y visual en edificios de enseñanza públicos en clima templado

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    Se presentan los estudios experimentales sobre las condiciones térmicas interiores deseables y los problemas que afectan al confort en edificios de la Universidad de la República. Se trata de dos edificios con diferentes resoluciones tipológicas y usuarios (edificios natural y/o artificialmente acondicionados), en dos zonas climáticas (Montevideo y Salto). Basados en el enfoque adaptativo se adquirieron y correlacionaron datos relacionados al ambiente térmico y lumínico, con la respuesta de las personas acerca de las condiciones interiores y sus preferencias y las acciones que realizan para lograr confort, en ambos aspectos. Los votos de sensación térmica no se corresponden con el voto medio previsto calculado. El movimiento del aire resultó el parámetro con mayor influencia sobre la percepción térmica de los usuarios, obteniendo mayores porcentajes de confort en locales naturalmente ventilados. El confort visual aparece vinculado a los dispositivos de control de la radiación solar y al tipo y disposición de las luminarias.We present experimental studies on the desirable indoor thermal conditions and problems affecting the comfort in buildings of the University of the Republic. These are two buildings with different typologies and users (natural ventilated buildings and / or artificially conditioned) in two climatic zones (Montevideo and Salto). From adaptive approach, its were acquired data to temperature and light environment, and correlated with the response from people about interior conditions and preferences and the actions they take to achieve comfort in both. The votes of thermal sensation do not correspond with the average vote calculated. Air movement was the most influential parameter on the thermal perception of the users, obtaining higher percentages of local comfort in naturally ventilated. Visual comfort appears to be linked to the control devices of solar radiation and the type and arrangement of the lighting.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

    Evaluación de pautas de diseño bioclimático aplicadas en edificios de vivienda en Uruguay (clima templado húmedo)

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    Este artículo presenta consumos de energía en viviendas obtenidos a partir de simulaciones computacionales para dos ciudades representativas del clima de Uruguay. El objetivo es evaluar las potencialidades de las estrategias de diseño que se utilizan frecuentemente en la construcción tradicional y sus posibles ajustes. Las estrategias que se presentan son: orientación, factor de huecos, protección solar y transmitancia térmica. En Salto la aplicación de las estrategias de diseño que tienen que ver con el control de la energía incidente (protecciones solares y/o factor de huecos) son determinantes en el consumo de energía total de la vivienda. En Montevideo y en Salto la colocación de aislante térmico tiene un peso relativo similar sobre el consumo de energía.This article presents energy consumption in dwellings obtained from computer simulations for two representative climate cities in Uruguay. The objective is to assess the potential of design strategies that are frequently used in traditional construction and their possible adjustments. The strategies presented are: solar orientation, hole factor, sun protection and thermal transmittance. In Salto implementing design strategies that have to do with control of the incident energy (solar protection and / or hole factor) are determinant of the total housing energy consumption. In Salto and Montevideo placement of thermal insulation has a similar relative influence in the energy consumption.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

    Evaluación de pautas de diseño bioclimático aplicadas en edificios de vivienda en Uruguay (clima templado húmedo)

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    Este artículo presenta consumos de energía en viviendas obtenidos a partir de simulaciones computacionales para dos ciudades representativas del clima de Uruguay. El objetivo es evaluar las potencialidades de las estrategias de diseño que se utilizan frecuentemente en la construcción tradicional y sus posibles ajustes. Las estrategias que se presentan son: orientación, factor de huecos, protección solar y transmitancia térmica. En Salto la aplicación de las estrategias de diseño que tienen que ver con el control de la energía incidente (protecciones solares y/o factor de huecos) son determinantes en el consumo de energía total de la vivienda. En Montevideo y en Salto la colocación de aislante térmico tiene un peso relativo similar sobre el consumo de energía.This article presents energy consumption in dwellings obtained from computer simulations for two representative climate cities in Uruguay. The objective is to assess the potential of design strategies that are frequently used in traditional construction and their possible adjustments. The strategies presented are: solar orientation, hole factor, sun protection and thermal transmittance. In Salto implementing design strategies that have to do with control of the incident energy (solar protection and / or hole factor) are determinant of the total housing energy consumption. In Salto and Montevideo placement of thermal insulation has a similar relative influence in the energy consumption.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

    Estudio de campo sobre las condiciones de confort térmico y visual en edificios de enseñanza públicos en clima templado

    Get PDF
    Se presentan los estudios experimentales sobre las condiciones térmicas interiores deseables y los problemas que afectan al confort en edificios de la Universidad de la República. Se trata de dos edificios con diferentes resoluciones tipológicas y usuarios (edificios natural y/o artificialmente acondicionados), en dos zonas climáticas (Montevideo y Salto). Basados en el enfoque adaptativo se adquirieron y correlacionaron datos relacionados al ambiente térmico y lumínico, con la respuesta de las personas acerca de las condiciones interiores y sus preferencias y las acciones que realizan para lograr confort, en ambos aspectos. Los votos de sensación térmica no se corresponden con el voto medio previsto calculado. El movimiento del aire resultó el parámetro con mayor influencia sobre la percepción térmica de los usuarios, obteniendo mayores porcentajes de confort en locales naturalmente ventilados. El confort visual aparece vinculado a los dispositivos de control de la radiación solar y al tipo y disposición de las luminarias.We present experimental studies on the desirable indoor thermal conditions and problems affecting the comfort in buildings of the University of the Republic. These are two buildings with different typologies and users (natural ventilated buildings and / or artificially conditioned) in two climatic zones (Montevideo and Salto). From adaptive approach, its were acquired data to temperature and light environment, and correlated with the response from people about interior conditions and preferences and the actions they take to achieve comfort in both. The votes of thermal sensation do not correspond with the average vote calculated. Air movement was the most influential parameter on the thermal perception of the users, obtaining higher percentages of local comfort in naturally ventilated. Visual comfort appears to be linked to the control devices of solar radiation and the type and arrangement of the lighting.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

    A novel molecular analysis approach in colorectal cancer suggests new treatment opportunities

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    Colorectal cancer (CRC) is a molecular and clinically heterogeneous disease. In 2015, the Colorectal Cancer Subtyping Consortium classified CRC into four consensus molecular subtypes (CMS), but these CMS have had little impact on clinical practice. The purpose of this study is to deepen the molecular characterization of CRC. A novel approach, based on probabilistic graphical models (PGM) and sparse k-means–consensus cluster layer analyses, was applied in order to functionally characterize CRC tumors. First, PGM was used to functionally characterize CRC, and then sparse k-means–consensus cluster was used to explore layers of biological information and establish classifications. To this aim, gene expression and clinical data of 805 CRC samples from three databases were analyzed. Three different layers based on biological features were identified: adhesion, immune, and molecular. The adhesion layer divided patients into high and low adhesion groups, with prognostic value. The immune layer divided patients into immune-high and immunelow groups, according to the expression of immune-related genes. The molecular layer established four molecular groups related to stem cells, metabolism, the Wnt signaling pathway, and extracellular functions. Immune-high patients, with higher expression of immune-related genes and genes involved in the viral mimicry response, may benefit from immunotherapy and viral mimicry-related therapies. Additionally, several possible therapeutic targets have been identified in each molecular group. Therefore, this improved CRC classification could be useful in searching for new therapeutic targets and specific therapeutic strategies in CRC diseas

    Position statement on infection screening, prophylaxis, and vaccination in pediatric patients with rheumatic diseases and immunosuppressive therapies, part 2: infection prophylaxis

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    This study aims to provide practical recommendations on prophylaxis for infection in pediatric patients with immune-mediated rheumatic diseases receiving/scheduled to receive immunosuppressive therapy. A qualitative approach was applied. A narrative literature review was performed via Medline. Primary searches were conducted using MeSH terms and free text to identify articles that analyzed data on infections and vaccinations in pediatric patients with immune-mediated rheumatic diseases receiving immunosuppressive therapy. The results were presented and discussed in a nominal group meeting comprising a committee of 12 pediatric rheumatologists from the Prevention and Treatment of Infections Working Group of the Spanish Society of Pediatric Rheumatology. Several recommendations were generated. A consensus procedure was implemented via a Delphi process that was extended to members of the Spanish Society of Pediatric Rheumatology and the Vaccine Advisory Committee of the Spanish Association of Pediatrics. Participants produced a score ranging from 0 (completely disagree) to 10 (completely agree). Agreement was considered to have been reached if at least 70% of participants voted ≥ 7. The literature review included more than 400 articles. Overall, 63 recommendations were generated (23 on infection prophylaxis) and voted by 59 pediatric rheumatologists and other pediatric specialists, all of whom achieved the pre-established level of agreement. The recommendations on prophylaxis of infection cover vaccination and prophylaxis against varicella zoster virus, tuberculosis, Pneumocystis jiroveccii, and invasive fungal infections in pediatric patients with immune-mediated rheumatic diseases receiving/scheduled to receive immunosuppressive therapy. Conclusion: Based on current evidence and a Delphi process, we provided consensus and updated recommendations on prophylaxis and treatment of infections to guide those caring for pediatric rheumatology patients.Funding for open access charge: Universidad de Málaga/CBU
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