93 research outputs found

    Estudio multivariante de la calidad relacional online y el nivel de inmersión digital en profesoras del Campo de Gibraltar

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    En el presente trabajo, se muestran los resultados de una investigación cuyo objetivo es demostrar la validez y fiabilidad de las medidas obtenidas con un instrumento elaborado ad hoc para medir el grado de inmersión digital y calidad relacional en profesoras del campo de Gibraltar. Se realiza un estudio cuantitativo, cuyo cuestionario se aplica a 1134 mujeres del campo de Gibraltar, profesoras en la enseñanza primaria y secundaria. Los resultados muestran varios perfiles de mujeres en función de las puntuaciones que obtienen en las distintas dimensiones de la inmersión digital (Iconectividad, Iconfianza y Icontenidos) y de la calidad relacional (intrapsicología, interpsicología y autoregulación). En cuanto a la inmersión digital, el acceso a Internet y el uso de las redes sociales es cada vez más frecuente entre las profesoras, aunque se observan necesidades de formación en habilidades necesarias para utilizar las TIC y las redes sociales, además las profesoras presentan niveles más bajos en cuanto a lo que se refiere a actividades autorreguladas de manejo y producción de contenidos de calidad. El estado de la calidad relacional es mejorable, existe desuso de las redes como herramienta personal y profesional, y es necesaria una formación a distintos niveles.In the present work, the results of a research whose objective is to demonstrate the validity and reliability of the measurements obtained with an instrument developed ad hoc to measure the degree of digital inclusion and relational quality in teachers of the field of Gibraltar are shown. A quantitative study is carried out, whose questionnaire is applied to 1134 women from the field of Gibraltar, teachers in primary and secondary school. The results show several profiles of women ones obtained in the different dimensions of digital inclusion (iconectivity, iconfence and icontenidos) and relational quality (intrapsychology, interpsychology and self-regulation). As to digital immersion, access to the Internet and the use of social networks are becoming more frequent among female teachers, although the needs of training in the skills to use TIC and social networks, in addition to the appropriate teachers lower levels in terms of self-regulated activities of management and production of quality content. The state of relational quality is improved, there is the possibility of writing as a personal and professional tool, and it is necessary.Universidad de Sevilla. Grado en Pedagogí

    Probabilistic analysis of groundwater-related risks at subsurface excavation sites

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          Construction of underground structures (e.g., subway lines, railways and highway tunnels) is inherently hazardous, posing risks to both workers and machinery at the site and to surrounding buildings. The presence of groundwater may increase these risks. We develop a general probabilistic risk assessment (PRA) framework to quantify risks driven by groundwater to the safety of underground constructions. The proposed approach is fully compatible with standard PRA practices, employing well-developed risk analysis tools based on the fault tree analysis method. The novelty and computational challenges of the proposed approach stem from the reliance on a combination of approaches including extracting information from databases, solving stochastic differential equations, or relying on expert judgment to compute probabilities of basic events. The general framework is presented in a case study and used to estimate and minimize risks at a construction site of an underground station for a new subway line in the Barcelona metropolitan area. &nbsp

    Effect of solute and matric potential on growth rate of fungal species isolated from cheese

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    The effect of water potential ( J w ) on the growth of 15 fungal species isolated from cheeses was analysed. The species, identified mainly by analysis of DNA sequences, belonged to genera Penicillium , Geotrichum , Mucor , Aspergillus , Microascus and Talaromyces . Particularly, the effect of matric potential ( J m ), and ionic (NaCl) and non-ionic (glycerol) solute potentials ( J s ) on growth rate was studied. The response of strains was highly dependent on the type of J w . For J s , clear profiles for optimal, permissive and marginal conditions for growth were obtained, and differences in growth rate were achieved comparing NaCl and glycerol for most of the species. Conversely, a sustained growth was obtained for J m in all the strains, with the exception of Aspergillus pseudoglaucus , whose growth increased proportionally to the level of water stress. Our results might help to understand the impact of environmental factors on the ecophysiology and dynamics of fungal populations associated to cheeses

    Standardizing Innovation Management: An Opportunity for SMEs in the Aerospace Industry

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    In a globalized marketplace, the competition in the aerospace industry has increased significantly. Producers can choose between many suppliers. These suppliers have to comply with more requirements and technical specifications, as well as take on greater responsibilities that originally fell on producers. In this context, business opportunities for small and medium-sized enterprises (SMEs) are limited, but still suppliers must try to leverage the maximum strategic advantage of the few that present. Adopting research, development and innovation (R+D+i) practices has proven to bring great benefits to companies and allows them to gain significant competitive advantages. However, the process of designing, implementing and testing R+D+i-related processes is not straightforward, nor it has been addressed in the recent research on SMEs. In this paper, a case study of a Spanish innovative small company providing industrial metrology and quality services is analyzed. Thanks to an internal decision-making process, an R+D+i management system based on the UNE 166.002:2014 standard is eventually adopted. A pilot project is closely followed up to test the robustness of the system implementation. The R+D+i management system has allowed the company to streamline its innovation activities, establish objectives to better allocate essential resources, organize high performing innovation units within the organization structure, increase the clients’ confidence, improve the company’s competitiveness, carry out technological surveillance, and get more patented technology, among many others. Adoption steps taken by this SME are generalizable to other SMEs from other industries and show how an R+D+i management system can be chosen, designed, implemented and tested in the context of Industry 4.0 (I4.0)

    Atención plena: la relación entre la aceptación de las emociones y la satisfacción con la vida en estudiantes pregraduados

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    The high prevalence and incidence of problems related to anxiety in the population have made it one of the main indicators of psychological ill-being (Guillén-Riquelme and Buela-Casal, 2011). Numerous researchers are studying its treatment by the use of therapeutic techniques of third generation based on mindfulness because it has become a practice of ascending use in the clinical exercise and the development of psychological health (Ford, Lam, John, and Mauss, 2017). The evidences in this regard show that there could be a tendency to publish only those investigations that report positive effects, which could be causing an exaggeration of reality (Coronado-Montoya et al., 2016). The present research has two objectives: (1) know the statistical relationship between the factors of Mindfulness (Observation, Description, Acting with awarenesse, Non-judging, and Non-reactivity) and anxiety (state and trait); and (2) check the explanatory capacity of these factors on both types of anxiety. A sample of 53 undergraduated students (third and fourth degree) from the University of Cádiz was used. They voluntarily completed the following questionnaires: Five Facet Mindfulness Questionnaire (Aguado et al., 2015) and State Trait Anxiety Inventory (Buela-Casal, GuillénRiquelme, and Seidedos, 2011). The bivariate correlation analysis performed showed that only the Non judging, Acting with awareness and Non-reactivity factors, correlated negatively and statistically significant with both types of anxiety. These factors were able to explain the change in the variance of state anxiety in 57.8% (R2 = .578), and in 62.7% in trait anxiety (R2 = .627). The factors Non judging (Beta = -.508) and Acting with awareness (Beta = -.346), were statistically significant when explaining levels of trait anxiety. However, only Non judging (Beta = -.693) remained as significant factor in anxiety state. In conclusion, the promotion of accepting nonevaluative attitude before the internal experience would seek an improvement in the levels of both types of anxiety and, in addition, paying full attention to the activities during its realization would suppose a decrease in the trait anxietyEl uso de las Terapias de Tercera Generación se ha intensificado en todos los ámbitos de la psicología relacionados con la salud. La Atención plena (Mindfulness) se ha postulado como una de las principales opciones elegidas de entre los profesionales, volviéndose una práctica de uso ascendente en el ejercicio clínico y el desarrollo de una buena salud psicológica (Ford, Lam, John, y Mauss, 2017). La satisfacción con la vida es uno de los componentes de la salud psicológica más relacionados con estas terapias. El presente estudio tiene como objetivos: 1. Examinar la posible relación entre los cinco factores de la Atención plena (Observación, Descripción, Actuar con conciencia, No juzgar y No reactividad) y la satisfacción con la vida. 2. Conocer la capacidad predictiva y explicativa de dichos factores respecto a la satisfacción con la vida. Se utilizó para ello una muestra de 53 estudiantes pregraduados (tercero y cuarto de carrera) de la Universidad de Cádiz que realizaron voluntariamente y a los que se les administró de forma telemática los cuestionarios: Five Facet Mindfulness Questionnaire (Aguado et al., 2015) y Satisfaction with Life Scale (Atienza, Pons y Balaguer, 2000). Los análisis de correlaciones bivariadas realizados mostraron que sólo los factores de la atención plena No juzgar y Actuar con conciencia, relacionaban de forma positiva y estadísticamente significativa con la satisfacción con la vida. El resultado del análisis de regresión simple efectuado reveló que ambos factores explicaban casi un 24 % de la varianza de la satisfacción con la vida (R cuadrado= 0,238), si bien solo el factor No Juzgar (aceptación de la experiencia internas y las emociones) mostró una capacidad predictiva positiva estadísticamente significativa (= 0,394). Ello nos aporta evidencia de que podemos incrementar la satisfacción con la vida del alumnado pregraduado a partir del desarrollo de su capacidad de aceptar las experiencias internas y las emociones

    Una dieta alta en proteína produce estrés oxidativo en el cerebro de ratas: acción protectora del ejercicio de alta intensidad sobre peroxidación lipídica

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    diets as well as aerobic exercise could promote antioxidant capacity and consequently reduce free radicals overproduction on brain. However, little is know regarding to the high-protein diets and high intensity exercise on oxidative stress production. The aim of this study was to analyse the effects of high-protein diets and high-intensity exercise (HIE) on brain oxidative stress markers. Materials and Methods: A total of 40 male Wistar rats were randomly distributed in 4 experimental groups (n=10): normal-protein or high-protein diets with or without HIE for an experimental period of 12 weeks. Main oxidative damage markers in brain such as thiobarbituric acid-reactive substances (TBARs) and protein carbonyl content (PCC) were assessed. In addition, brain manganese superoxide dismutase (Mn-SOD), cooper/ zinc superoxide dismutase (CuZn-SOD) and catalase (CAT) antioxidant enzymes activity, and protein level of Nuclear factor erythroid 2 related factor 2 (Nrf2) were measured. Results and discussion: Brain TBARs, PCC, tSOD, Mn-SOD, CuZn-SOD and CAT levels were higher in the high-protein compared to the normal-protein groups (all, p<0.05). In addition, the expression of Nrf2 protein was higher in the high-protein and HIE groups compared to the normal-protein and sedentary groups, respectively (both, p<0.01). A protein amount*HIE interaction was found on brain TBARs content, and tSOD and CuZn- SOD activity derived from a HIE-induced decrease in the high-protein but not in the normal-protein group (p<0.05). Conclusions: The high-protein diets consumption produce higher levels of brain lipid peroxidation, in spite of higher levels of antioxidant enzymatic capacity. However, HIE may attenuate the deleterious effect of a high-protein diet on brain lipid peroxidation when both effects are combined.Introducción: Es conocido que la proteína de soja así como la práctica de ejercicio físico aeróbico pueden incrementar la capacidad antioxidante y con ello reducir la sobreproducción de radicales libres en el cerebro. Sin embargo, existe desconocimiento sobre el efecto del consumo de dietas hiperproteicas y el entrenamiento de alta intensidad (EAI) sobre dicho estrés oxidativo. El objetivo del presente estudio fue analizar la influencia del consumo de una dieta hiperproteica y de EAI sobre marcadores de estrés oxidativo en cerebro. Métodos: Cuarenta ratas Wistar macho adultas fueron aleatoriamente distribuidas en 4 grupos experimentales (n=10): dieta normoproteica o hiperproteica, con o sin EAI durante un periodo experimental de 12 semanas. Se determinaron los principales marcadores de daño oxidativo en cerebro como sustancias reactivas del ácido tiobarbitúrico (TBARs) y el contenido de grupos carbonilos (PCC). Además, se midieron las actividades enzimáticas superóxido dismutasa del manganeso (Mn-SOD), de cobre/ zinc (CuZn-SOD) y catalasa (CAT), así como el nivel de proteína del factor nuclear eritroide-2 (Nrf2). Resultados: Los niveles de TBARs, PCC, tSOD, Mn- SOD, CuZn-SOD y CAT fueron significativamente mayores en los grupos hiperproteicos en comparación con los normoproteicos (todas, p<0,05). La expresión de la proteína Nrf2 fue mayor en los grupos hiperproteicos y con EAI en comparación con los grupos normorpoteicos y sedentarios, respectivamente (ambos, p<0,01). Se observó una interacción en la disminución de los niveles de TBARs, tSOD y CuZn-SOD producida por el EAI en el grupo hiperproteico que no fue reflejada en el grupo normoproteico (p=0,05). Conclusión: El consumo de una dieta hiperproteica produce altos niveles de peroxidación lipídica en el cerebro, a pesar de los altos niveles de capacidad enzimática antioxidante detectados. Sin embargo, el efecto del EAI podría atenuar los niveles de peroxidación lipídica producidos por el consumo de una dieta hiperproteica.This study was supported by the project DEP2008-04376 from the Ministry of Science and Innovation and grants from the Spanish Ministry of Education (D.C.M. grant number AP2009-3173), (E.N. grant number AP2009-5033)

    CreaSTEAM. Hacia la mejora de brechas en diversidad mediante la recopilación de proyectos, buenas prácticas y espacios STEAM

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    La falta de diversidad, especialmente la desigualdad de género y el origen social son algunos de los problemas globales que podemos encontrar en diferentes sectores, pero especialmente latentes en el contexto de los campos de la Ciencia, la Tecnología, la Ingeniería (y el recientemente añadido concepto de Artes), y las Matemáticas (STEAM), desde la escuela primaria hasta el nivel universitario y, por tanto, el mercado laboral. Cuando hablamos de diversidad, nos preocupamos por atraer a personas representativas de todos los sectores de la sociedad, diferentes culturas, discapacidades, grupos étnicos, género u orientación sexual. Teniendo en cuenta el contexto descrito, el proyecto CreaSTEAM tiene como objetivo proporcionar un mapa actualizado de los recursos enfocados a la reducción de la brecha de diversidad utilizando enfoques STEAM, y cómo seleccionar de estos recursos las mejores soluciones para crear un marco que permita implementar STEAM-Labs en las escuelas. Los STEAM-Labs, como principal novedad del proyecto, fusionan las soluciones que podemos encontrar en los FAB-Labs, MEDIA-Labs, y USER-Labs, y nuestro enfoque se centra en la creación de buenas prácticas en estos espacios para promover la diversidad en STEAM, donde la diversidad también abarca la equidad de género, y la inclusión social para la promoción de las vocaciones STEAM

    Peripheral Inflammatory Indexes Neutrophil/Lymphocyte Ratio (NLR) and Red Cell Distribution Width (RDW) as Prognostic Biomarkers in Advanced Solitary Fibrous Tumour (SFT) Treated with Pazopanib

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    Simple Summary Pazopanib treatment in advanced solitary fibrous tumour patients, assessed in the prospective GEIS-32 phase II clinical trial, has shown longer progression-free survival and overall survival versus chemotherapy treatment in control patients. In recent years, the interest in the prognostic and predictive value of different peripheral inflammatory indexes, such as neutrophil/lymphocyte ratio, platelet/lymphocyte ratio, and red cell distribution width, has been increased in sarcomas, showing significant results in different soft tissue sarcomas. However, they have not been previously analysed in solitary fibrous tumour (SFT) patients. These indexes were retrospectively analysed in the typical- and malignant-SFT cohorts treated with pazopanib of the GEIS-32 trial to evaluate their predictive or prognostic value. Pazopanib was assessed prospectively in the GEIS-32 phase II study (NCT02066285) on advanced solitary fibrous tumour (SFT), resulting in a longer progression-free survival (PFS) and overall survival (OS) compared with historical controls treated with chemotherapy. A retrospective analysis of peripheral inflammatory indexes in patients enrolled into GEIS-32 was performed to evaluate their prognostic and predictive value. Patients received pazopanib 800 mg/day as the first antiangiogenic line. The impacts of baseline neutrophil/lymphocyte ratio (NLR), platelet/lymphocyte ratio (PLR), and red cell distribution width (RDW) on PFS, OS, and Choi response were evaluated by univariate and multivariate analysis. Metastasis-free interval (MFI), mitotic count, and ECOG were also included as potential prognostic factors. Sixty-seven SFT patients, enrolled in this study, showed a median age of 63 years and a female/male distribution of 57/43. The median follow-up from treatment initiation was 16.8 months. High baseline NLR, PLR, and standardised RDW were significantly associated with worse PFS and OS. NLR, RDW, MFI, and mitotic count were independent variables for PFS, while RDW and ECOG were independent for OS. Further, NLR and mitotic count were independent factors for Choi response. High baseline NLR and RDW values were independent prognostic biomarkers for worse outcome in advanced SFT patients treated with pazopanib

    Composición e invarianza factorial del cuestionario Medida de la Intencionalidad para ser Físicamente Activo (MIFA) en adolescentes mexicanos

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    The aim of this research was to analyze the psychometric properties proposed by Moreno et al. (2007) for the Measurement of Intention to be Physically Active (MIFA) questionnaire. The total sample has been composed by 549 Mexican adolescents, 256 women and 293 mean, with ages from 11 to 16 years (M = 12.91, SD = 0.49). The factor structure of questionnaire has been analized through the confirmatory factor analysis. This analysis shows that a unifactorial structure is viable and adequate for the total sample and the populations of men and women. The unifactorial structure, according to statistical and substantive criteria, has shown adequate indicators of reliability and validity adjustment. On the other hand, the factorial structure, the factorial loads and the intercepts are considered invariant according to gender; however, there are differences between men and women for the average intentionality of being physically active. In conclusion, the MIFA-M can be a useful tool to advance in the study of the factors that affect the practice of physical activity.El objetivo de esta investigación fue analizar las propiedades psicométricas propuestos por Moreno, Moreno y Cervelló (2007) para el cuestionario Medida de la Intencionalidad para ser Físicamente Activo (MIFA). La muestra total fue de 549 adolescentes mexicanos 256 mujeres y 293 hombres, con edades comprendidas entre 11-16 años (M = 12.91; DE = 0.49). La estructura factorial del cuestionario se analizó mediante análisis factoriales confirmatorios. Los análisis, muestran que una estructura unifactorial es viable y adecuada tanto para la muestra total como para las poblaciones de hombres y mujeres. La estructura unifactorial, atendiendo a criterios estadísticos y sustantivos, ha mostrado adecuados indicadores de ajuste de fiabilidad y validez. Por otro lado, la estructura factorial, las cargas factoriales y los interceptos se consideran invariantes de acuerdo al género; sin embargo, existen diferencias entre hombres y mujeres para la media de intencionalidad para ser físicamente activo. En conclusión, el MIFA-M puede ser una herramienta útil para avanzar en el estudio de los factores que afectan a la práctica de actividad física.O objetivo do presente estudo instrumental foi analisar a composição e invariância fatorial por gênero do questionário Medida de Intencionalidade a ser Fisicamente Ativa proposto por Moreno et al. (2007) adaptado ao contexto mexicano (MIFA-M) em adolescentes mexicanos. Um total de 549 adolescentes mexicanos, 256 mulheres e 293 homens, com idades entre 11 e 16 anos (M = 12.91; DP = .49) completaram o questionário MIFA-M. A estrutura fatorial do questionário foi analisada por análises fatoriais confirmatórias. Os resultados mostraram que uma estrutura unifatorial é viável e adequada tanto para a amostra total quanto para as populações de homens e mulheres. Com base em critérios estatísticos e substantivos, a estrutura unifatorial apresentou indicadores adequados de confiabilidade e validade. Além disso, a estrutura fatorial, as cargas fatoriais e os interceptos eram invariantes de acordo com o gênero. Maiores valores de intenção de ser fisicamente ativo em homens do que em mulheres foram encontrados. Maiores valores de intenção de ser fisicamente ativo em homens do que em mulheres foram encontrados. Em conclusão, o MIFA-M é um instrumento útil para avaliar a intenção de ser fisicamente ativo em adolescentes mexicanos

    Escritura : Un estudio de las habilidades de los estudiantes de América Latina y el Caribe

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    Este informe presenta los resultados alcanzados por los estudiantes en las pruebas de escritura del SERCE. Se trata de un reporte analítico, que ofrece datos sobre aspectos relevantes del proceso y el producto de la escritura, como lo que se transforma entre el borrador y el texto, la coherencia de las informaciones en la versión final, la adecuación del tema y el ajuste a la situación comunicativa, el uso del léxico y la corrección ortográfica, entre otros. Este tipo de información permitirá a los países participantes realizar análisis exhaustivos que apoyen las decisiones curriculares y didácticas encaminadas al mejoramiento de la enseñanza de la escritura, herramienta básica que la educación debe entregar de la mejor manera posible a cada ser humano
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