4,302 research outputs found

    Towards a dynamic learning perspective of entrepreneurship

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    This conceptual paper introduces a dynamic learning perspective of entrepreneurship that builds upon existing 'dominant' theoretical approaches to understanding entrepreneurial activity. As many aspects of entrepreneurial learning remain poorly understood, this paper presents key conclusions from in-depth empirical work and synthesises a broad range of contributory adult, management and individual learning literatures to develop a robust and integrated conceptualisation of entrepreneurial learning. Three interrelated elements of entrepreneurial learning are proposed - dynamic temporal phases, interrelated processes and overarching characteristics. The paper concludes by demonstrating how a 'learning lens' can be applied to create further avenues for research in entrepreneurship from a learning perspectiv

    Food products for space applications

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    Specially-prepared foodstuffs supply an astronaut with a diet containing his basic nutritional requirements in a form that is useful in his enironment. Several edible coatings preserve foods and give loose foods form and firmness. These coatings aid in packaging and give the food slip for easy removal from the package

    Researching entrepreneurship through phenomenological inquiry: philosophical and methodological issues

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    In recent years, the field of entrepreneurship has witnessed an emerging body of research that operates within an interpretive paradigm. In contributing to this research tradition, this article explicates an interpretive, phenomenological form of inquiry, described by Thompson et al (1989) as the 'phenomenological interview'. Particular attention is paid to the ontological and epistemological foundations of this approach, illustrating the evolution from philosophy to methodology. The article demonstrates how a phenomenological commitment to research translates into a set of issues that provide the methodological context for these in-depth, unstructured interviews. The application of this method is then demonstrated with reference to case study research that was conducted with six practising entrepreneurs, which utilised phenomenological interviews as the primary research tool. The article concludes with a discussion of some important caveats that surround the use of the phenomenological intervie

    T cells in rheumatoid arthritis

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    Over the past decade and a half, advances in our understanding of the pathogenesis of immune-mediated diseases such as rheumatoid arthritis (RA) have translated directly into benefit for patients. Much of this benefit has arisen through the introduction of targeted biological therapies. At the same time, technological advances have made it possible to define, at the cellular and molecular levels, the key pathways that influence the initiation and persistence of chronic inflammatory autoimmune reactions. As our understanding grows, it is likely that this knowledge will be translated into a second generation of biological therapies that are tailor-made for the patient. This review summarizes current perspectives on RA disease pathogenesis, with particular emphasis on what RA T cells look like, what they are likely to see, and how they contribute to persistence of the chronic inflammatory response

    Adaptive estimation and discrimination of Holevo-Werner channels

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    The class of quantum states known as Werner states have several interesting properties, which often serve to illuminate unusual properties of quantum information. Closely related to these states are the Holevo-Werner channels whose Choi matrices are Werner states. Exploiting the fact that these channels are teleportation covariant, and therefore simulable by teleportation, we compute the ultimate precision in the adaptive estimation of their channel-defining parameter. Similarly, we bound the minimum error probability affecting the adaptive discrimination of any two of these channels. In this case, we prove an analytical formula for the quantum Chernoff bound which also has a direct counterpart for the class of depolarizing channels. Our work exploits previous methods established in [Pirandola and Lupo, PRL 118, 100502 (2017)] to set the metrological limits associated with this interesting class of quantum channels at any finite dimension
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