Evaluation of core loss calculation methods for highly non-sinusoidal inputs

A modular, hybrid HVDC transformer, located in the turbine nacelle has been proposed for the offshore wind industry to improve efficiency and redundancy while reducing costs. The injection of harmonics by the transformer power electronics however, complicates the core loss calculations of such a transformer. The standard Steinmetz Equation is no longer valid and the alternative loss equations proposed in the literature are significantly more complicated. Therefore, many in the industry still use the Steinmetz Equation with the signal's Fourier Transform. However, the literature suggests this to be inaccurate without quantifying it. This paper will therefore compare the accuracy of this approach to a prominent alternative presented in the literature, the improved Generalised Steinmetz Equation

Developing inclusive pedagogies in HE through an understanding of the learner-consumer : promiscuity, hybridisation, and innovation

Abstract: This article contributes to debates about how to respond to the changing profile of Higher Education (HE) students, and the marketisation of HE, by challenging prevailing views about student engagement, in order to develop learner-centric and inclusive pedagogies which are relevant to the twenty-first century. The concepts of ‘participatory culture’ and ‘co-creativity’ are often associated with the digital world in which the current generation of students have grown up. But it is a mistake to assume that some learning styles are inherently more participatory than others: participation is not an effect of the medium or form, (analog vs digital), or the space (actual vs virtual), or the mode of interaction a (face-to-face vs networked) through which the learner participates – it is an effect of the practices involved. Students engage with a complex network of both digital and analog texts and spaces, and it is this postdigital hybrid setting within which student engagement takes place. Marketisation provides an opportunity to actively demonstrate our commitments to student-centredness and inclusive practice, by transcending the binary opposition between ‘Student as Partner’ and ‘Student as Consumer’ and recognizing that students are learner-consumers, and allowing students’ diversity to drive innovation, rather than continuing to disempower students by bolstering practices which privilege some learning styles above others, informed by the assumption that innovation is technology-led

Anomalous visual experience is linked to perceptual uncertainty and visual imagery vividness

An imbalance between top-down and bottom-up processing on perception (specifically, over-reliance on top-down processing) can lead to anomalous perception, such as illusions. One factor that may be involved in anomalous perception is visual mental imagery, which is the experience of “seeing” with the mind’s eye. There are vast individual differences in self-reported imagery vividness, and more vivid imagery is linked to a more sensory-like experience. We, therefore, hypothesized that susceptibility to anomalous perception is linked to individual imagery vividness. To investigate this, we adopted a paradigm that is known to elicit the perception of faces in pure visual noise (pareidolia). In four experiments, we explored how imagery vividness contributes to this experience under different response instructions and environments. We found strong evidence that people with more vivid imagery were more likely to see faces in the noise, although removing suggestive instructions weakened this relationship. Analyses from the first two experiments led us to explore confidence as another factor in pareidolia proneness. We, therefore, modulated environment noise and added a confidence rating in a novel design. We found strong evidence that pareidolia proneness is correlated with uncertainty about real percepts. Decreasing perceptual ambiguity abolished the relationship between pareidolia proneness and both imagery vividness and confidence. The results cannot be explained by incidental face-like patterns in the noise, individual variations in response bias, perceptual sensitivity, subjective perceptual thresholds, viewing distance, testing environments, motivation, gender, or prosopagnosia. This indicates a critical role of mental imagery vividness and perceptual uncertainty in anomalous perceptual experience. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s00426-020-01364-7) contains supplementary material, which is available to authorized users

The Amenity Complex: Towards a Framework for Analysing and Predicting the Emergence of a Multifunctional Countryside in Australia

There is growing consensus among academics, regional development organisations and rural communities that the future growth and development of rural regions is increasingly dependent upon their ability to convey, to both established and prospective residents, the 'amenity' of their local physical, social and economic environments. However, little research to date has sought to identify exactly what comprises 'amenity' in the rural context, or has examined how this conceptually slippery quality is distributed across rural Australia, or how it influences local demographic, socio-economic and land use change. This paper attempts a broad scale investigation of rural amenity in the south-east Australian ecumene, identifying its core components in this context, mapping its distribution and assessing the nature of its influence over in-migration rates over the past three decades. The paper finds that, at a macro-scale, amenity tends to follow a general gradient from high to low according to distance from the coast, and that its relationship with in-migration rates has increased substantially between 1976–1981 and 1996–2001