2,896 research outputs found

    Assistive design for English phonetic tools (ADEPT) in language learning

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    Assistive Design for English Phonetic Tools (ADEPT) was developed to improve inclusion in classrooms and enhance collaboration among blind, low vision, and sighted learners of American English (AE) as a second/foreign language through better access to the International Phonetic Alphabet (IPA) symbols and the sounds they represent. Grounded in multisensory training efficacy, ADEPT involves auditory-visual- tactual integration through the use of visual-tactile IPA symbol cards and an auditory-visual companion website based on the Universal Design for Learning guidelines. Each card includes a symbol, description, and website reference number, all with braille notations. The website includes printed and audio-recorded information on the articulation of AE consonants and vowels, with recordings of each sound in isolation, syllables, and words. ADEPT’s pedagogical efficacy was field tested with 21 blind/low vision adult L2 learners of AE (L1 Spanish), emphasizing vowel production in a pretest-training-posttest design, which had a training period of 10 weeks. Production scores from native-speaking raters were the dependent variable in a multilevel model with time (pretest-posttest comparison) as a fixed effect. Results showed a significant effect of time (i.e., improvement in production accuracy); the fit of the model improved when the random effect of participants was added (p < .001). In addition, pre- and post-study comments were very positive. ADEPT, which learners described as “invaluable,” can facilitate a collaborative learning environment

    Antioxidant activity of alkyl gallates and glycosyl alkyl gallates in fish oil in water emulsions: Relevance of their surface active properties and of the type of emulsifier

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    The antioxidant activity of gallic acid and a series of alkyl gallates (C4-C18) and glycosylated alkyl gallates (C4-C18) on fish oil-in-water emulsions was studied. Three types of emulsifiers, lecithin, Tween-20 and sodium dodecyl sulphate (SDS) were tested. A nonlinear behavior of the antioxidant activity of alkyl gallates when increasing alkyl chain length was observed for emulsions prepared with lecithin. Medium-size alkyl gallates (C6-C12) were the best antioxidants. In contrast, for emulsions prepared with Tween-20, the antioxidants seem to follow the polar paradox. Glucosyl alkyl gallates were shown previously to be better surfactants than alkyl gallates. Nevertheless, they exhibited a worse antioxidant capacity than their corresponding alkyl gallates, in emulsions prepared with lecithin or Tween-20, indicating the greater relevance of having three OH groups at the polar head in comparison with having improved surfactant properties but just a di-ortho phenolic structure in the antioxidant

    Una síntesis de las localidades ibéricas conocidas para Craspedacusta sowerbii Lankester, 1880 (Cnidaria: Hydrozoa): nuevo registro para España procedente de la vega del Guadalquivir

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    Alien invasive species are one of the major threats to biodiversity. Particularly, cnidarian species are frequently spread far from their native areas, through human activities. Indeed, many hydroids have been successfully transported as fouling on ship hulls, in ballast waters and as fauna associated with the commercial traffic of other aquatic species. Craspedacusta sowerbii Lankester, 1880 (Hydrozoa: Olindiidae) is the most widely distributed freshwater medusa around the world. This hydrozoan species is probably considered native to the Yangtze valley (China) and invasive in freshwater systems worldwide. In this note, we report the presence of an established population of C. sowerbii from the low Guadalquivir River (western Andalusia, southwestern Spain) and provide the environmental data associated with its occurrence. The spatial distribution of C. sowerbii in the Iberian Peninsula is still poorly studied and most information is derived from regional academic publications, technical reports of limited access, naturalists’ observations or press news on environmental issues. Therefore, all sparse Iberian records for this species have been revised and presented here. This note contributes to know its distribution in the Iberian Peninsula, an important preliminary step to later assess the impact of this invasive species on the Iberian ecosystems.Las especies exóticas invasoras son una de las mayores amenazas para la biodiversidad. Particularmente, las especies de cnidarios son frecuentemente dispersadas lejos de sus áreas de origen por mediación de actividades humanas. Así, muchos hidrozoos han sido exitosamente transportados en las aguas de lastre, fijadas en los cascos de los barcos y como fauna asociada al tráfico comercial de otras especies acuáticas. Craspedacusta sowerbii Lankester, 1880 (Hydrozoa: Olindiidae) es la medusa de agua dulce más ampliamente distribuida en el planeta. Esta especie de hidrozoo es considerada probablemente nativa del valle del Yangtze (China) e invasora en ambientes epicontinentales de prácticamente todo el mundo. En esta nota, señalamos la presencia de una población de C. sowerbii establecida en el bajo Guadalquivir (Andalucía Occidental, Suroeste de España) y proporcionamos los datos ambientales asociados con su ocurrencia. La distribución espacial de C. sowerbii en la Península Ibérica está aún poco estudiada y la mayoría de la información proviene de publicaciones académicas regionales, informes técnicos de limitado acceso, observaciones puntuales de naturalistas o noticias de prensa sobre cuestiones ambientales. Por tanto, se han revisado estas fuentes para presentar reunidos todos los registros conocidos sobre esta especie en la Península Ibérica. Esta nota contribuye al conocimiento de su distribución en la Península Ibérica, un importante paso previo para evaluar posteriormente el impacto de esta especie invasora en los ecosistemas ibéricos

    An experimental research on emotional stimuli of consumers: the case of H&amp;M flagship store influence on the millennial customer experience in Barcelona

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    Purpose: The main objective of this exploratory research study was to demonstrate the extent to which customers' approach-avoidance responses to fast fashion flagship stores can be predicted from their emotional states framed according to the PAD (Pleasure, Arousal, and Dominance) model and information rates. Design/methodology/approach: Data was collected through a survey questionnaire from 72 randomly selected millennials visiting H&M flagship store, just after their visit (55% women and 45% men). Data was analysed using exploratory factor analysis to classify the measures and later through regression analysis explaining the predictor variables. Findings: In accordance with the theory and past research on PAD measures, results show PAD as a highly predictable variable over most of the approach-avoidance behaviour in a flagship store environment. Pleasure variable shows highly significant relationship with affect, approach-avoidance (average of all measures of approach-avoidance), and time spent in the store and to an extent significantly relates to purchase intentions. This signifies that in a highly pleasant environment, an individual’s affectionate behaviour, to remain exploring in the store for a longer time, and on an average the approach behaviour to the flagship store will be highly positive. Originality/value: This study is a unique exploration, as very little is known in the literature, on flagship store influences over consumer experiences. Findings suggest interesting advancement in the field of in person shopping effects and encourages future research in flagship store economic investments and marketing impacts, which may extend consumer behavioural scopes as well. This exploratory research may have implications of interest for business strategic decision, brand management, and for marketing as well. As brands seek to recover consumers in their physical stores, offering them a safer and more complete shopping experience, flagship stores can play a key role in encouraging online customers’ visiting stores in-person, which may ultimately increase salesPeer Reviewe

    Estudio estratigráfico y de correspondencia de los parámetros decorativos de la escalera de la Santa Cueva de Cádiz. Definición del proyecto de intervención

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    El templo de la Santa Cueva situado en la calle Rosario es un conjunto histórico artístico compuesto de una capilla baja o subterránea, dedicada a la meditación de la Pasión de Cristo, y de otra alta, u oratorio, consagrado al Santísimo Sacramento. Su construcción se llevó a cabo en la segunda mitad del siglo XVIII en estilo clasicista o neoclásico. El día 31 de marzo de 1796 se bendijo e inauguró el oratorio, culminándose la obra del conjunto

    Testing caffeic acid as a natural antioxidant in functional fish-fibre restructured products

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    7 páginas, 4 figuras, 5 tablasThe antioxidant effectiveness of caffeic acid addition to minced fish muscle with or without wheat dietary fibre added was studied. Wheat dietary fibre showed a significant prooxidant effect on minced fish muscle during chilled storage that was significantly inhibited in presence of 100 mg/kg caffeic acid. In samples containing caffeic acid and wheat dietary fibre, lipid oxidation was completely inhibited after 10 days. Results obtained from the instrumental texture profile analysis showed that the inclusion of wheat dietary fibre with or without caffeic acid lowered the texture profile analysis parameters. Caffeic acid did not render any changes on the water binding capacity. These results prove that caffeic acid can be successfully used as a natural antioxidant in wheat dietary fibre minced fish restructured products.This work was performed within the Integrated Research Project SEAFOODplus, contract No FOOD-CT-2004-506359 and the research project AGL2006-26016-E/GAN. The [partial] financing of this work by the European Union and the Spanish Ministerio de Educación y Ciencia is gratefully acknowledged.Peer reviewe
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