1,268 research outputs found

    Consumer Profile, Limitations and Drivers of Green Products and Services Movement

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    Treballs Finals del Grau de d'Administració i Direcció d'Empreses, Facultat d'Economia i Empresa, Universitat de Barcelona, Curs: 2019-2020 , Tutor: Samer Ajour El Zein[eng] The aim of this paper is to analyse the boosters that have conducted the change in the consumption habits of the population, giving place to the purchase of green products and services. In addition, we have studied the factors that prevent this trend from growing faster. It has also been considered relevant to observe the profile of the current consumer as well as ones at existing companies. In order to carry out this research, we have developed surveys adapted to each agent that participates in the market, in order to know and resolve our questions and thus draw conclusions. The paper lists the factors that influence the demand function of green products and observes that the young well educated generation is more disposed to the consumer behaviour change in the sustainable consumption industry, exposing the limitations opening the line for further research in this industry.[spa] Este trabajo trata de analizar cuáles han sido los impulsores que han llevado a cabo un cambio en los hábitos de consumo de la población, dando lugar a la compra de productos y servicios verdes. Del mismo modo, hemos estudiado cuáles son los factores que impiden que esta tendencia crezca de manera más rápida. También se ha considerado relevante observar el perfil del consumidor actual así como el de las empresas existentes. Para poder llevar a cabo esta investigación hemos desarrollado encuestas adaptadas a cada uno de los agentes que participan en el mercado para poder conocer y resolver nuestras incógnitas y extraer así unas conclusiones. El documento enumera lo factores que influyen en la función de la demanda de productos verdes y observa que la generación joven y con estudios está más dispuesta al cambio de comportamiento en la industria del consumo sostenible. Del mismo modo, se exponen las limitaciones que abren paso a futuras investigaciones de esta industria

    The phenomenon of Spanish idiom as international language: reflections on the cultural component in teaching

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    En este artículo analizamos la creciente expansión de la lengua española como instrumento de comunicación internacional. Dicha expansión viene acompañada, por un lado, del consiguiente crecimiento del negocio de la enseñanza del español como lengua extranjera y, por el otro, de un fuerte discurso ideológico destinado a legitimar el avance del español sobre otras lenguas y su constante incursión en nuevos ámbitos. En este avance, uno de los principales desafíos es la decisión de cuál componente cultural incluir en su enseñanza. Nuestro artículo se concentrará fundamentalmente en este último punto, donde compararemos distintas posturas presentes en los manuales para el alumno.In this article we attempt to analyze the expansion of the Spanish language as a means of international communication. This expansion implies, on the one hand, the growing market of Spanish as a foreign language, and on the other hand, a strong ideological speech aiming to legitimate the predominance of Spanish over other languages and the incursion of Spanish in new fields. In this sense, one of the major challenges is deciding on what cultural elements to teach. Our article will focus on the cultural component of Spanish teaching by comparing the cultural perspectives adopted in different textbooks.Fil: Pozzo, María Isabel Rita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto Rosario de Investigaciones en Ciencias de la Educación. Universidad Nacional de Rosario. Instituto Rosario de Investigaciones en Ciencias de la Educacion; ArgentinaFil: Fernández, Susana Silvia. University Aarhus; Dinamarc

    Engagement and Performance in Physics: The role of class instructional strategies, and student's personal and situational interest

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    This study aimed to analyse situational and personal interest in Physics, to establish how both are affected by two instructional strategies (provide opportunities of choice, and make explicit the relevance of contents), and to determine how strategies and interest influenced engagement, disaffection, and performance. Participants were 430 second-year science-technology Baccalaureate students (52.4% girls). Structural equation models corroborated the hypotheses: situational and personal interests were improved by these two instructional strategies. Moreover, both modalities of interest and teaching strategies enhanced academic engagement and performance, protecting students from disaffection. Mediated effects between the assessed variables were also significant.Fil: González Fernández, Antonio. Universidad de Vigo; EspañaFil: Paoloni, Paola Veronica Rita. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

    Perceived autonomy-support, expectancy, value, metacognitive strategies and performance in chemistry: a structural equation model in undergraduates

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    Research in chemistry education has highlighted a number of variables that predict learning and performance, such as teacher?student interactions, academic Motivation and metacognition. Most of this chemistry research has examined these variables by identifying dyadic relationships through bivariate correlations. The main purpose of this study was to simultaneously investigate students? perceptions of teacher?student interactions (autonomy support), motivation (expectancy, Importance, utility and interest), metacognitive strategies for problem solving (planning, monitoring and evaluation), and performance in chemistry. Measures were collected from 503 Spanish undergraduates (53.13% females) aged 18 to 36 years. Structural equation modeling (SEM) tested the hypothesized direct and mediated relations between these variables. First, confirmatory factor analysis (CFA) provided evidence of the robustness of the evaluation instruments. Second, perceived autonomy support positively predicted expectancy, importance, utility, interest, planning, monitoring, evaluation and performance in chemistry; Motivational variables positively predicted metacognitive strategies and Performance; and metacognitive strategies positively predicted performance. Moreover, all hypothesized mediated effects between variables were also supported. We conclude discussing the main findings of this study, highlighting their educational implications, acknowledging their limitations, and proposing lines of future research on chemistry education.Fil: González Fernández, Antonio. Universidad de Vigo; EspañaFil: Paoloni, Paola Veronica Rita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Rio Cuarto. Facultad de Cs.humanas. Instituto de Investigaciones Sociales, Territoriales y Educativas.; Argentin

    Knight by force and wounded, protecting without a shield: a meta-ethnography of men's experiences after an involuntary pregnancy loss

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    Review[Abstract] Objective: To synthesize the available body of qualitative research regarding the experiences of men after an involuntary pregnancy loss. Design: Noblit and Hare's interpretive meta-ethnography of 13 original qualitative articles was carried out. Results: After reciprocal and refutational translations, the lines of argument synthesis were developed, together with the metaphor "Knight by force and wounded, protecting without a shield." This metaphor symbolizes the experience of men after an involuntary pregnancy loss. CERQual assessment showed that the results are a (highly) reasonable representation of the phenomenon of interest. Conclusions: The men attempted to cope with the loss of fatherhood and suffering, while managing the lack of social recognition and social expectations of masculinity in terms of their behaviour and expression of suffering. They tended to be strong, although they did not always have the necessary support or knowledge. Implications for practice: Comprehensive and individualized care that includes the man is required. This requires the theoretical-practical training of nurses and midwives, and the provision of tools that help the emotional management of emotionally demanding care.Xunta de Galicia; ED431C-2018/3

    Methylobacterium sp. 2A is a plant growth-promoting rhizobacteria that has the potential to improve potato crop yield under adverse conditions

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    A Gram-negative pink-pigmented bacillus (named 2A) was isolated from Solanum tuberosum L. cv. Desirée plants that were strikingly more developed, presented increased root hair density, and higher biomass than other potato lines of the same age. The 16S ribosomal DNA sequence, used for comparative gene sequence analysis, indicated that strain 2A belongs to the genus Methylobacterium. Nucleotide identity between Methylobacterium sp. 2A sequenced genome and the rest of the species that belong to the genus suggested that this species has not been described so far. In vitro, potato plants inoculated with Methylobacterium sp. 2A had a better performance when grown under 50 mM NaCl or when infected with Phytophthora infestans. We inoculated Methylobacterium sp. 2A in Arabidopsis thaliana roots and exposed these plants to salt stress (75 mM NaCl). Methylobacterium sp. 2A-inoculated plants, grown in control or salt stress conditions, displayed a higher density of lateral roots (p < 0.05) compared to noninoculated plants. Moreover, under salt stress, they presented a higher number of leaves and larger rosette diameter. In dual confrontation assays, Methylobacterium sp. 2A displayed biocontrol activity against P. infestans, Botrytis cinerea, and Fusarium graminearum, but not against Rhizoctonia solani, and Pythium dissotocum. In addition, we observed that Methylobacterium sp. 2A diminished the size of necrotic lesions and reduced chlorosis when greenhouse potato plants were infected with P. infestans. Methylobacterium sp. 2A produces indole acetic acid, solubilizes mineral phosphate and is able to grow in a N2 free medium. Whole-genome sequencing revealed metabolic pathways associated with its plant growth promoter capacity. Our results suggest that Methylobacterium sp. 2A is a plant growth-promoting rhizobacteria (PGPR) that can alleviate salt stress, and restricts P. infestans infection in potato plants, emerging as a potential strategy to improve crop management.Fil: Grossi, Cecilia Eugenia María. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; ArgentinaFil: Fantino, Elisa Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; ArgentinaFil: Serral, Federico. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Calculo. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Calculo; ArgentinaFil: Zawoznik, Myriam Sara. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Biológica. Cátedra de Química Biológica Vegetal; ArgentinaFil: Fernández Do Porto, Darío Augusto. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Calculo. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Calculo; ArgentinaFil: Ulloa, Rita Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Biológica; Argentin

    The influence of theme identifiability on false memories: evidence for age-dependent opposite effects

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    [EN]In the present study, we used the Deese/Roediger–McDermott paradigm to analyze the relationship between theme identifiability of word lists and false memories in adults and children. We conducted two normative stud ies to determine the identifiability levels for critical unpresented words in 40 associative lists in adults and in 16 associative lists in children. Then, in three experiments, false memories for critical words that were either easy or hard to identify were analyzed in adults and in children 4–5 years old and 11–12 years old. Opposite results were found for adults and children. Lists with highly identifiable critical words produced fewer false memories for adults but more false memories for children. These results suggest that, if they can identify critical words, adults use an identify-to-reject strategy to edit out false memories, whereas, in children, theme identification does not lead to the use of such a monitoring strategy

    Comparative Analysis of Muscle Transcriptome between Pig Genotypes Identifies Genes and Regulatory Mechanisms Associated to Growth, Fatness and Metabolism.

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    Iberian ham production includes both purebred (IB) and Duroc-crossbred (IBxDU) Iberian pigs, which show important differences in meat quality and production traits, such as muscle growth and fatness. This experiment was conducted to investigate gene expression differences, transcriptional regulation and genetic polymorphisms that could be associated with the observed phenotypic differences between IB and IBxDU pigs. Nine IB and 10 IBxDU pigs were slaughtered at birth. Morphometric measures and blood samples were obtained and samples from Biceps femoris muscle were employed for compositional and transcriptome analysis by RNA-Seq technology. Phenotypic differences were evident at this early age, including greater body size and weight in IBxDU and greater Biceps femoris intramuscular fat and plasma cholesterol content in IB newborns. We detected 149 differentially expressed genes between IB and IBxDU neonates (p &lt; 0.01 and Fold-Change &gt; 1. 5). Several were related to adipose and muscle tissues development (DLK1, FGF21 or UBC). The functional interpretation of the transcriptomic differences revealed enrichment of functions and pathways related to lipid metabolism in IB and to cellular and muscle growth in IBxDU pigs. Protein catabolism, cholesterol biosynthesis and immune system were functions enriched in both genotypes. We identified transcription factors potentially affecting the observed gene expression differences. Some of them have known functions on adipogenesis (CEBPA, EGRs), lipid metabolism (PPARGC1B) and myogenesis (FOXOs, MEF2D, MYOD1), which suggest a key role in the meat quality differences existing between IB and IBxDU hams. We also identified several polymorphisms showing differential segregation between IB and IBxDU pigs. Among them, non-synonymous variants were detected in several transcription factors as PPARGC1B and TRIM63 genes, which could be associated to altered gene function. Taken together, these results provide information about candidate genes, metabolic pathways and genetic polymorphisms potentially involved in phenotypic differences between IB and IBxDU pigs associated to meat quality and production traits
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