233 research outputs found
A Socio-metabolic Transition of Diets on a Greek Island: Evidence of “Quiet Sustainability”
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Raising awareness on sustainability issues through a mobile game
No full textThe paper presents a review on, and analysis of, the design, development and evaluation of experiences of learning through the 'Sustainability Serious Game'. The mobile game has been developed as means of helping public authorities to collect information and feedback on how public spaces could be improved based on collective intelligence procedures. Furthermore, as part of enhancing learning, the game intends to provide knowledge and awareness on sustainability issues for public constructions relevant to engineering and architectural disciplines. Deployed targeted questionnaires with thirty-three (33) computer science students in UK and analysed through a Likert Scale findings from evaluation demonstrate that a conceptual change may be achieved in relation to how sustainability has been perceived. A questionnaire with 20 questions was distributed to students for evaluating various elements of the game such as usability characteristics, accumulation, assimilation and consolidation of new knowledge patterns related to the learning-oriented benefits of the game with an implicit focus on whether the game can be integrated within an academic setting. The fundamental conclusion from the analysis of the game uptake is that it enhances student's engagement with sustainability issues, especially in blended learning contexts for 'blending' different pedagogical approaches with game-oriented features as means of improving educational practice
Nonlinearity in the Light Processing of the Human Visual System
No full textVisual evoked potentials, i.e responses to visual stimulation as recorded using electroencephalography have indicated the existence of nonlinear behavior of the visual pathway. Nonlinearities and time delay in the visual system play an important role in understanding the complex nature of the visual system. This study investigated the nonlinear interactions and time delay in the visual pathway, using several types of stimulation paradigms. Multisine (i.e sum of multiple sinusoidal signals) and sine light stimulation were presented to healthy participants in order to elicit steady-state visual evoked responses. The recorded signals were analyzed using multi-spectral phase coherence, a novel cross-frequency phase coupling metric, in order to quantify the nonlinear interactions, form a brain map and estimate time delay. Chirp light stimulation (signals with linearly increasing frequencies) was used to elicit visual responses inside a specific frequency range. Time delay was estimated using Fractional Fourier Transformation due to its ability to handle chirps’ non-stationary properties. Brain maps indicated that multisine paradigms elicit more localized nonlinear interactions than chirp paradigms. All sinusoidal stimulation provided clusters of similar time delays. Bisine presented the most distinctive groups, fact that suggests that bisine is able to be used as a distinction measure. Trisine time delay showed the lowest variance, fact that shows more accurate estimation. Chirp time delay presented also small variances but the mean time delay found to be very frequency dependent. To conclude, this study showed that multisine paradigms are suitable to be used to elicit nonlinear responses but time delay may not be sufficient measure to fully describe the visual system
Southern thought, islandness and real-existing degrowth in the Mediterranean
No full textAltres ajuts: acords transformatius de la UABUnidad de excelencia María de Maeztu CEX2019-000940-MIn thinking about alternatives to growth-based development, we draw attention to Mediterranean islands and the way they animate imaginaries and practices of a simple life. We follow Franco Cassano's thesis of 'Southern thought' - a critique of Western developmentalism, prioritizing instead values of slowness, moderation and conviviality. These values are central to what Serge Latouche and others call 'degrowth'. Drawing on fieldwork and ethnography from Ikaria and Gavdos, two remote islands in the Greek archipelago, we show how Southern thought, and forms of real-existing degrowth develop in relation to 'islandness' - a physical and cultural condition specific to small islands. Geography, historical contingency, and processes of myth-making combine to re-valorise what otherwise would be seen as 'undeveloped' places, thereby generating space for real-existing degrowth
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ARCO as a Platform for the EPOCH Multimodal Interface for Safe Presentation of Valuable Objects
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Higher Order Deformations of Hyperbolic Spectra
No full textThis is an expanded writeup of a talk given by the second author at Erik Balslev's 75th birthday conference on October 1-2, 2010 at Aarhus University. We summarize our work on Fermi's golden rule and higher order phenomena for hyperbolic manifolds. A topic which occupied the last part of Erik Balslev's research
Distance and volume decreasing theorems for quasiconformal mappings
No full textThe method used by the author in deriving a Picard type theorem for quasiconformal mappings [Proc.. Amer. Math. Soc. 61 (1976), 265-27], improved by a proposition of S.-T. Yau [Amer. J. Math. 100 (1978), 197-203] is employed here to extend the Schwarz-Ahlfors lemma to harmonic quasiconformal mappings. The target space is not necessarily hyperbolic, not even negatively curved.</p
Multimedia Augmmented Reality Interface for E-learning (MARIE)
No full textAn interactive Multimedia Augmented Reality Interface for E-Learning (MARIE) is presented in the article. Its application for engineering education is discussed in order to enhance traditional teaching and learning method
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