44,775 research outputs found

    University status celebrated at Lingnan

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    This article described how students and staff welcomed Lingnan College\u27s impending change in status after the bill conferring university status on the college was gazetted.https://commons.ln.edu.hk/lingnan_milestone_newspapers/1000/thumbnail.jp

    Hugh Miller: stonemason, geologist, writer

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    Hugh Miller was born in 1802 in Cromarty, Ross-shire. He started his working life as a stonemason’s apprentice; he later became a social commentator and crusader. His was a household name in his lifetime, not only in Scotland but across the English-speaking world. A recent revival in Scottish history and culture, and a reassessment of the 19th century debates in science, geology and religion, have all led to a fuller appreciation of the rich and complex stories in which Hugh Miller played a part, and of the man himself. With the benefit of recent research for the 2002 conferences, this biography does full justice to the self-educated man, a figure of renown in the 19th century whose literary genius and scientific acumen still resonate in the 21s

    On the deduction of galaxy abundances with evolutionary neural networks

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    A growing number of indicators are now being used with some confidence to measure the metallicity(Z) of photoionisation regions in planetary nebulae, galactic HII regions(GHIIRs), extra-galactic HII regions(EGHIIRs) and HII galaxies(HIIGs). However, a universal indicator valid also at high metallicities has yet to be found. Here, we report on a new artificial intelligence-based approach to determine metallicity indicators that shows promise for the provision of improved empirical fits. The method hinges on the application of an evolutionary neural network to observational emission line data. The network's DNA, encoded in its architecture, weights and neuron transfer functions, is evolved using a genetic algorithm. Furthermore, selection, operating on a set of 10 distinct neuron transfer functions, means that the empirical relation encoded in the network solution architecture is in functional rather than numerical form. Thus the network solutions provide an equation for the metallicity in terms of line ratios without a priori assumptions. Tapping into the mathematical power offered by this approach, we applied the network to detailed observations of both nebula and auroral emission lines in the optical for a sample of 96 HII-type regions and we were able to obtain an empirical relation between Z and S23 with a dispersion of only 0.16 dex. We show how the method can be used to identify new diagnostics as well as the nonlinear relationship supposed to exist between the metallicity Z, ionisation parameter U and effective (or equivalent) temperature T*.Comment: Accepted for publication in PASP. 6 pages, 2 figure

    Integrated financial supervision : lessons of Northern European experience

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    Drawing on Northern European experience - where three Scandinavian countries have practiced integrated supervision for the past 10 years - the authors address three policy-related issues associated with the integrated model: a) Under what conditions should (or should not) a country consider moving toward an integrated model of financial supervision? Clearly, for a small transition or developing economy, or an economy with a small financial sector, the economies of scale from establishing an integrated agency outweigh the costs of moving to such a model. A strong case can also be made for an integrated approach in a financial sector dominated by banks, with little role for capital markets or a highly integrated financial sector. b) How should an integrated agency be structured, organized, and managed? There is no single obviously correct organizational structure, and existing agencies are experimenting with a variety of forms. An institutionally based structure has the virtue of simplicity and can be implemented fairly quickly, but tends to preserve the cultures and identities of the predecessor agencies more than is optimal. Whatever the structure, integrated supervision requires active management to secure the potential benefits that the approach offers. C) How should the integration process be implemented? While the decision to move to an integrated agency must be carefully thought through in the context of the country concerned, the more difficult part is implementation, which must be sensitively managed. Once the decision has been made, implementation should take place as quickly as possible. A well-conceived"change management"process should aim to overcome the cultural barriers associated with the previous fragmented structure. The authors'review of Northern European experience with integration of financial supervision raises a range of questions relevant to developing and transition economies, which they discuss.Financial Intermediation,Banks&Banking Reform,Insurance&Risk Mitigation,Environmental Economics&Policies,National Governance

    Lipschitz domains, domains with corners and the Hodge Laplacian

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    We define self-adjoint extensions of the Hodge Laplacian on Lipschitz domains in Riemannian manifolds, corresponding to either the absolute or the relative boundary condition, and examine regularity properties of these operators' domains and form domains. We obtain results valid for general Lipschitz domains, and stronger results for a special class of ``almost convex'' domains, which apply to domains with corners.Comment: 20 pages; amste

    Metaphor, Objects, and Commodities

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    This article is a contribution to a symposium that focuses on the ideas of Margaret Jane Radin as a point of departure, and particularly on her analyses of propertization and commodification. While Radin focuses on the harms associated with commodification of the person, relying on Hegel's idea of alienation, we argue that objectification, and in particular objectification of various features of the digital environment, may have important system benefits. We present an extended critique of Radin's analysis, basing the critique in part on Gadamer's argument that meaning and application are interrelated and that meaning changes with application. Central to this interplay is the speculative form of analysis that seeks to fix meaning, contrasted with metaphorical thought that seeks to undermine some fixed meanings and create new meanings through interpretation. The result is that speculative and metaphorical forms are conjoined in an interactive process through which new adaptations emerge. Taking this critique an additional step, we use examples from contemporary intellectual property law discourse to demonstrate how an interactive approach, grounded in metaphor, can yield important insights
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