2,777 research outputs found

    El Autoconcepto en Niños Mexicanos y Argentinos

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    Se trabajó con una muestra de 67 participantes mexicanos y 108 argentinos de ambos sexos, de 11 a 13 años de edad, parahacer una comparación de su estructura mental de autoconcepto. A través de análisis factoriales de componentes principalescon rotación Varimax, se encontraron tanto similitudes como diferencias en la estructura y contenido del autoconcepto deambas muestras, como efecto de la cultura. En ambas muestras se encontró una tendencia a comportarse con base en lanormatividad social, la afiliación y la expresión de los afectos. Las diferencias muestran que los argentinos se orientan deforma más natural hacia el desarrollo intelectual, en comparación con los mexicanos que requieren de mayor orden yseveridad para ello. Asimismo, se observó que los adjetivos de rebeldía, autoafirmación que se agruparon en ambasmuestras, fueron más abundantes entre los participantes argentinos que en los mexicanos. Este dato permite observar unamayor tendencia de los niños argentinos hacia la asertivida

    Using indirect blockmodeling for monitoring students roles in collaborative learning networks

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    Collaborative learning activities have shown to be useful to address educational processes in several contexts. Monitoring these activities is mandatory to determine the quality of the collaboration and learning processes. Recent research works propose using Social Network Analysis techniques to understand students' collaboration learning process during these experiences. Aligned with that, this paper proposes the use of the indirect blockmodeling network analytic technique for monitoring the behaviour of different social roles played by students in collaborative learning scenarios. The usefulness of this technique was evaluated through a study that analysed the students' interaction network in a collaborative learning activity. Particularly, we tried to understand the structure of the interaction network during that process. Preliminary results suggest that indirect blockmodeling is highly useful for inferring and analysing the students' social roles, when the behaviour of roles are clearly different among them. This technique can be used as a monitoring service that can be embedded in collaborative learning applications.Peer ReviewedPostprint (published version

    Metabolomics profiling of strawberry (Fragaria x ananassa) F1 population to characterize flavour and nutritional traits

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    The cultivated strawberry (Fragaria x ananassa) is a highly consumed fruit known for its delicate flavour and nutritional characteristics. However, as fruit quality attributes have been lost after years of traditional breeding, new technological tools, such as high throughput metabolomics, are necessary for the identification of factors responsible of these traits. Here we present the metabolomics profiling for the content of primary and secondary metabolites of a 95 F1 individuals strawberry population derived from genotype “1392”, selected for its superior flavour, and “232” (Zorrilla-Fontanesi et al., 2011; Zorrilla-Fontanesi et al., 2012). Metabolite profiling was performed on mature fruits of the strawberry population using gas chromatography hyphenated to time-of-flight mass spectrometry for primary metabolites and ultra performance liquid chromatography Exactive Orbitrap tandem mass spectrometry for secondary metabolites.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

    Continuous Positive Airway Pressure Treatment in Patients with Alzheimer's Disease: A Systematic Review

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    Background: Epidemiological studies have suggested a pathophysiological relationship between obstructive sleep apnea syndrome (OSAS) and Alzheimer's disease (AD). The aim of this study is to evaluate the treatment of obstructive sleep apnea with continuous positive airway pressure (CPAP) in AD and its relationship with neurocognitive function improvement. Methods: Systematic review conducted following PRISMA's statements. Relevant studies were searched in MEDLINE, PEDro, SCOPUS, PsycINFO, Web of Science, CINAHL and SportDicus. Original studies in which CPAP treatment was developel in AD patients have been included. Results: 5 studies, 3 RCTs (Randomized controlled trials) and 2 pilot studies. In all RCTs the CPAP intervention was six weeks; 3 weeks of therapeutic CPAP vs. 3 weeks placebo CPAP (pCPAP) followed by 3 weeks tCPAP in patients with AD and OSA. The two pilot studies conducted a follow-up in which the impact on cognitive impairment was measured. Conclusions: CPAP treatment in AD patients decreases excessive daytime sleepiness and improves sleep quality. There are indications that cognitive deterioration function measured with the Mini Mental Scale decreases or evolves to a lesser extent in Alzheimer's patients treated with CPAP. Caregivers observe stabilization in disease progression with integration of CPAP. More research is needed on the topic presented
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