1,650 research outputs found

    The value of information in biosecurity risk-benefit assessment: an application to red imported fire ants

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    Policy makers are confronted daily with uncertainty, especially in complex areas like biosecurity. One way to improve decision-making and reduce uncertainties is to collect more information. Information is costly – whether the value of improved decision-making justifies the cost is a fundamental question facing policy makers. This paper addresses that question by making three practical contributions for binary choices (such as whether to implement or forego a particular policy). First, it analyses the determinants of the value of information, and how that value changes with features of the problem. Second, it uses this analysis to derive simple rules of thumb which provide upper bounds on the value of additional information. Third, it provides a practical application of the value of information in deciding whether to attempt eradication of the red imported fire ant.Environmental Economics and Policy,

    Verba Volant, Scripta Manent

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    ``Most people think typography is about fonts. Most designers think typography is about fonts. Typography is more than that, it\u27s expressing language through type. Placement, composition, typechoice.\u27\u27 (Mark Boulton

    The politics of queer precarity: Queer resistance to rentier-capitalism

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    Correlation length and negative phase velocity in isotropic dielectric-magnetic materials

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    A composite material comprising randomly distributed spherical particles of two different isotropic dielectric-magnetic materials is homogenized using the second-order strong-property-fluctuation theory in the long-wavelength approximation. Whereas neither of the two constituent materials by itself supports planewave propagation with negative phase velocity (NPV), the homogenized composite material (HCM) can. The propensity of the HCM to support NPV propagation is sensitive to the distributional statistics of the constituent material particles, as characterized by a two--point covariance function and its associated correlation length. The scope for NPV propagation diminishes as the correlation length increases

    Comments and Suggestions for Improvement of the Archon Genomics X PRIZE Validation Protocol

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    This document is a comment on the X PRIZE validation protocol written by Kedes et al. (2011). We propose several modifications which we think will improve the fairness and transparency of the contest while keeping the cost of the validation process under control

    Chapter 4 AVATAR Therapy for Refractory Auditory Hallucinations

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    AVATAR therapy is part of a new and exciting wave of therapies which adopt an explicitly relational and dialogic approach to working with the distressing voices. To understand the AVATAR approach, it is important to consider its position in the evolution of psychological interventions for distressing voices

    Stirling number and periodic points

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    We introduce the notion of almost realizability, an arithmetic generalization of realizability for integer sequences, which is the property of counting periodic points for some map. We characterize the intersection between the set of Stirling sequences (of both the first and the second kind) and the set of almost realizable sequences.Comment: 13 page

    On (almost) realizable subsequences of linearly recurrent sequences

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    In this note we show that if (un)nâ©ľ1(u_n)_{n\geqslant 1} is a simple linearly recurrent sequence of integers whose minimal recurrence of order kk involves only positive coefficients that has positive initial terms, then (Muns)nâ©ľ1(Mu_{n^s})_{n\geqslant 1} is the sequence of periodic point counts for some map for a suitable positive integer MM and ss any sufficiently large multiple of k!k!. This extends a result of Moss and Ward [The Fibonacci Quarterly 60 (2022), 40-47] who proved the result for the Fibonacci sequence.Comment: 10 page

    School Leadership and Equity : an examination of policy response in Scotland

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    In this paper we adopt a critical perspective on the implementation of policy on school leadership and equity in Scotland, viewing policy as both an attempt to solve problems and an attempt to persuade social actors to subscribe to particular beliefs that delineate action. We begin by offering a definition of “policy response”, and then examine how policy “conversations” establish consensus around such things as school leadership and equity. We examine Scottish policy on school leadership and equity and consider what practices this policy does, and does not permit. In so doing, our examination of the implementation of policy on school leadership and equity in Scotland acknowledges that such policy is in part extemporized, and in part the attempt to make inevitable a “de-stated” account of governance. We conclude by contextualising our forthcoming empirical study of the Leadership Standards for Social Justice in Scotlan
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