8,229 research outputs found

    Prophylactic Neutrality, Oppression, and the Reverse Pascal's Wager

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    In Beyond Neutrality, George Sher criticises the idea that state neutrality between competing conceptions of the good helps protect society from oppression. While he is correct that some governments are non-neutral without being oppressive, I argue that those governments may be neutral at the core of their foundations. The possibility of non-neutrality leading to oppression is further explored; some conceptions of the good would favour oppression while others would not. While it is possible that a non-neutral state may avoid oppression, it is argued that the risks are so great that it is better to bet on government being neutral, thereby minimizing the possibility of oppression

    "Dispersion management" for solitons in a Korteweg-de Vries system

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    The existence of ``dispersion-managed solitons'', i.e., stable pulsating solitary-wave solutions to the nonlinear Schr\"{o}dinger equation with periodically modulated and sign-variable dispersion is now well known in nonlinear optics. Our purpose here is to investigate whether similar structures exist for other well-known nonlinear wave models. Hence, here we consider as a basic model the variable-coefficient Korteweg-de Vries equation; this has the form of a Korteweg-de Vries equation with a periodically varying third-order dispersion coefficient, that can take both positive and negative values. More generally, this model may be extended to include fifth-order dispersion. Such models may describe, for instance, periodically modulated waveguides for long gravity-capillary waves. We develop an analytical approximation for solitary waves in the weakly nonlinear case, from which it is possible to obtain a reduction to a relatively simple integral equation, which is readily solved numerically. Then, we describe some systematic direct simulations of the full equation, which use the soliton shape produced by the integral equation as an initial condition. These simulations reveal regions of stable and unstable pulsating solitary waves in the corresponding parametric space. Finally, we consider the effects of fifth-order dispersion.Comment: 19 pages, 7 figure

    The Deterrent Effects of National Anti-Cartel Laws: Evidence from the International Vitamins Cartel

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    This paper estimates the effect on international trade flows during the 1990s of the formation of the vitamins cartel. After this cartel began operating, exports from countries where the cartel conspirators' headquarters were located to those nations in Asia, Western Europe, and Latin America that did not have active cartel enforcement regimes tended to rise in value more than in those nations that had such regimes. As industry studies suggest that the demand for vitamins is price inelastic, this finding is supportive of the hypothesis that the vitamins cartel raised prices further in nations without active cartel enforcement regimes. These findings also have implications for the cost-benefit analyses of anti-cartel laws. In nine economies in Western Europe and Latin America, where recent estimates of government outlays on competition policy enforcement were found, these expenditures were compared to the additional overcharges on vitamins imports that would have resulted if each of these nations did not have an active cartel enforcement regime. In seven of the nine economies, the reduction in overcharges on this one international cartel alone exceeded a quarter of their government's spending on the entire competition policy enforcement regime. These findings have a direct bearing on the debate, currently taking place at the World Trade Organization, on the merits of multilateral disciplines that would require all WTO members to enact and enforce provisions against hard core cartels.

    The myth of the urban peasant

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    This paper explores, the ‘myth of the urban peasant’, the widespread belief that urban Russian households are surviving the collapse of employment and money incomes by turning to subsistence agriculture. On the basis of the analysis of official and survey data the paper shows that although many urban households grow food in their garden plots, those with low money incomes are the least likely to do so, while subsistence production is a complement rather than an alternative to paid employment. Moreover, those who do grow their own food work long hours for very little return, spending no less of their money income on buying food than do those who grow nothing. The implication is that dacha use is a leisure activity of the better-off rather than a survival strategy of the poor. Regional data suggests that urban agricultural production persists in those regions in which commercial agriculture and monetised relations are least developed which, it is surmised, retain memories of past shortages

    Religious delusion or religious belief?

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    How shall we distinguish religious delusion from sane religious belief? Making this determination is not usually found to be difficult in clinical practice – but what shall be our theoretical rationale? Attempts to answer this question often try to provide differentiating principles by which the religious “sheep” may be separated from the delusional “goats.” As we shall see, none of these attempts work. We may, however, ask whether the assumption underlying the search for a differentiating principle – that religious beliefs and religious delusions can usefully be considered species of a common genus – is a good one. In this paper, we outline an alternative, “disjunctive,” understanding of religious belief and religious delusion. By reminding ourselves both of what is central to any delusion and of what distinguishes bona fide religious claims from their pretenders, we show how to resolve our reflective puzzlement about religious delusion without recourse to differentiating principles

    An evaluation of the Riparian Vegetation Index (RVI) in KwaZulu-Natal.

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    Thesis (M.Sc.)-University of Natal, Pietermaritzburg, 2003.No abstract available

    The impact of regulation, ownership and business culture on managing corporate risk within the water industry

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    Although the specifics of water utility ownership, regulation and management culture have been explored in terms of their impact on economic and customer value, there has been little meaningful engagement with their influence on the risk environment and risk management. Using a literature review as the primary source of information, this paper maps the existing knowledge base onto two critical questions: what are the particular features of regulation, ownership and management culture which influence the risk dynamic, and what are the implications of these relationships in the context of ambitions for resilient organizations? In addressing these queries, the paper considers the mindful choices and adjustments a utility must make to its risk management strategy to manage strategic tensions between efficiency, risk and resilience. The conclusions note a gap in understanding of the drivers required for a paradigm shift within the water sector from a re-active to a pro-active risk management culture. A proposed model of the tensions between reactive risk management and pro-active, adaptive risk management provides a compelling case for measured risk management approaches which are informed by an appreciation of regulation, ownership and business culture. Such approaches will support water authorities in meeting corporate aspirations to become "high reliability" services while retaining the capacity to out-perform financial and service level targets

    Education, poverty and the millennium development goals

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    Old challenges and new opportunities for the MDGs : now and beyond 2015

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    As we approach the 2015 date by which the Millenium Development Goals (MDGs) are to be achieved, there is increasing scrutiny as to the progress towards their achievement. The MDGs were intended to be global targets and not necessarily to be assessed at the country level. In other words, countries were to contribute to the global targets but not be held to account against them, as they were originally conceived. In practice though, countries are assessed against the global MDG targets. It is appropriate that continuing interest be paid to the achievement of the MDGs, however it is also necessary that the global community now start to turn its attention to what framework for addressing the world\u27s development needs beyond the MDG timeframe following 2015. The ‘poverty landscape’ has changed significantly in the last decade – partly as a result of the international community\u27s focus on the MDGs – and so it is necessary that a new approach to poverty alleviation reflect this changed reality. This paper introduces a range of papers presented at an international conference on the MDGs that critically analyse the current MDGs and pose questions as to how should we follow the MDGs beyond 2015
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