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91.
Gilfoyle D 《Journal of the history of medicine and allied sciences》2006,61(1):26-65
This article examines the practice of veterinary immunology in South Africa during the first half of the twentieth century through an analysis of research into a horsesickness vaccine at the Onderstepoort Veterinary Institute. From the early 1900s, Arnold Theiler prioritized research into horsesickness, by then defined as an insect-borne disease caused by an ultravisible virus. He succeeded in devising a means of prophylaxis using a simultaneous injection of infective blood and immune serum, but he discovered antigenically different strains of the virus, which could overcome the immunity produced by his treatment. The practical value of Theiler's methods was further limited by difficulties in standardizing the biological material used in immunization, the results of which remained too erratic for application on a large scale. No further advances were made until the 1930s, by which time Onderstepoort had been drawn more closely into international scientific networks. Using techniques derived from research into yellow fever in America and canine distemper in Britain, the Onderstepoort scientist Raymond Alexander invented a method of immunization that utilized the propagation of the horsesickness virus in the brains of mice. Alexander's methods, which were characterized by successful technical adaptation and innovation, depended upon methods of quantification first developed by Paul Ehrlich to standardize diphtheria antitoxin during the 1890s. During the 1940s, vaccination expanded rapidly in South Africa, and Onderstepoort later exported the vaccine and associated technology to other countries affected by horsesickness. 相似文献
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Abstract. This research examines the benefits to individual workers hired under California's enterprise zone (EZ) program. The analysis reveals that EZ program participation has a positive impact on both wages and adjusted gross income of EZ participants, and the benefits appear to be greater for taxpayers with very low initial income. It is unclear whether the income boost from EZ participation is permanent or transitory. We also find that participation in the EZ program increases the likelihood that an individual will file a tax return. Because this is a case study, we caution that additional analysis is needed to fully determine the extent to which these results can be generalized. 相似文献
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Michael Allen Fox 《European Legacy》2006,11(4):369-387
Schopenhauer had important things to say about ethics in both normative and meta-ethical senses, but his impact on the evolution of moral theory has been minimized by the unfortunate neglect of his philosophy in general. A contemporary assessment of his ethical views reveals that they are both imaginative and interesting, not least because they challenge assumptions held by more canonical figures in the history of philosophy, both before and after his time. Since the roots of ethics are currently being vigorously re-examined, it is regrettable that Schopenhauer's ideas have been omitted from mainstream discussion in the field. I attempt to remedy this lack by investigating how his ethics of compassion contributes to the following areas: reconciling ethics with strict determinism; naturalizing ethics; developing the philosophy of education; seeking inner peace and world peace; re-visioning our relationship with non-human animals and the environment. As this list indicates, Schopenhauer's moral theory has relevance for a much wider audience, beyond the limited sphere of professional philosophy. And because the world is in dire need of moral rejuvenation, any inspiration provided by a major thinker such as Schopenhauer should be heartily welcomed. While certain internal problems are posed by his metaphysical and epistemological doctrines, we can see past these in order to appropriate the living insights still to be found in Schopenhauer's ethical thought. 相似文献
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The Whereabouts of Power: Politics, Government and Space 总被引:4,自引:0,他引:4
John Allen 《Geografiska annaler. Series B, Human geography》2004,86(1):19-32
Abstract In a world where it has become almost commonplace to talk about power as centralised or distributed, concentrated or diffuse, deterritorialized or dispersed even, it is all too easy to miss the diverse geographies of power that put us in place. The binary talk that forces us to choose between a centred or a decentred view of power, or to shuffle between them in an effort to blur clearly demarcated scales, leaves little room to move beyond defined distances and settled proximities in relation to the exercise of power. In this paper, a more spatially‐curious dialogue of power is opened up which foregrounds associational as well as instrumental forms of power which can make a difference to how we act politically. 相似文献
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Allen Blackman 《政策研究杂志》2008,36(1):119-141
Hamstrung by weak institutions that undermine conventional environmental regulatory tools, policymakers in developing countries are increasingly turning to voluntary approaches. To date, however, there have appeared few evaluations of these policy experiments. To help fill this gap, we summarize arguments for and against the use of voluntary regulation in developing countries, review the nascent literature on the topic, and present case studies of agreements negotiated between regulators and leather tanners in an industrial city in Mexico, a national environmental audit program in Mexico, and a national public disclosure program in India. Admittedly few in number, these three case studies nevertheless suggest that although voluntary environmental regulation in developing countries is a risky endeavor, it is by no means doomed to failure. The risks can be minimized by emphasizing the dissemination of information about pollution and pollution abatement options and by avoiding voluntary approaches in certain situations—those where regulatory and nonregulatory pressures for improved environmental performance are weak and where polluters can block quantified targets, individual sanctions for noncompliance, and other widely accepted prerequisites of effective voluntary initiatives. 相似文献
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