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This paper develops a conceptual framework for examining the process of immunisation and explores the sociodemographic determinants of vaccination in Zambia. About 300 mothers with children under 3 years of age were interviewed in urban Lusaka. The analyses suggest that sociostructural, as well as cultural, processes influence the attrition process and immunisation programmes should focus on the uniqueness of each stage. In addition, programmes to improve women's education and to reduce male gender preferences are needed.  相似文献   

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Many veterans of the 1991 Gulf War (GW) have complained of somatic and cognitive symptoms that may be neurological in nature. However, whether or not changes in brain function are associated with GW service continues to be debated. Studies of GW veterans using objective, performance-based neuropsychological measures have yielded inconsistent findings, with those indicating deficits among GW veterans typically revealing only relatively mild levels of neuropsychological impairment. Further, performances on objective neuropsychological tasks show little correspondence to subjective perceptions of cognitive functioning. Although preliminary magnetic resonance spectroscopy (MRS) studies demonstrate reduced N-acetylaspartate-to-creatine (NAA/Cr) ratio in select brain regions among GW veterans who report health concerns, this work requires further replication with larger, more representative samples. There is no evidence from neuroimaging studies of a non-specific effect of GW service or of changes in brain structure or function related to health status when conventional radiological methods are used. Owing to the paucity of objective exposure, baseline health data, and the now significant time elapsed since the GW, aetiological issues may never be fully resolved. Therefore, research addressing clinical management of GW veterans with neuropsychological dysfunction and neuroimaging abnormalities may prove more fruitful than exclusive focus on aetiology.  相似文献   

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With the completion of the Human Genome Project in May 2006, genetic testing for every American is rapidly becoming a reality. As the advanced technology fuels the path towards personalized medicine, genetic nondiscrimination legislation follows closely behind. It seems that the 2007 Genetic Information Nondiscrimination Act (GINA) will finally pass through both chambers of Congress and will be signed by the President, but questions remain. On May 1, 2008, the House passed GINA by a vote of 414 to 1. Why is this the year that genetic nondiscrimination legislation could finally become the reality? Is this the beginning of a new relationship between science and policy, where policy is finally catching up? We examine the answers to these questions through a look at the history of genetic nondiscrimination legislation and where it stands today, including arguments for and against the bill. We conclude by discussing how we can achieve a future of safe personalized medicine for the populous, which would require continuous productive interactions between policymakers and scientists.  相似文献   

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Carlson EA 《Genetics》2011,187(1):1-7
H. J. Muller (1890-1967) was unusual as a scientist because he spoke out on numerous occasions about the uses and abuses of genetics in society. In this article, I follow Muller's efforts to do so and the consequences that they had on his career, his productivity as a research scientist, and his reputation. The shifting sites of Muller's work--which ranged from Columbia University to Texas, from Berlin to Moscow and Leningrad, from Madrid to Edinburgh, and from Amherst to Indiana University--made his activism unusual. Muller paid a price for his activism, and his reputation today is still marred by what most historians would consider risky judgments and reversals of position about genetics and society. My analysis is not a defense but rather an evaluation of the circumstances that led him to these positions and an analysis of the consequences of challenging society when scientists believe their science is being ignored or abused.  相似文献   

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In this paper I characterize science in terms of both invisible hand social organization and selection. These two processes are responsible for different features of science. Individuals working in isolation cannot produce much in the way of the warranted knowledge. Individual biases severely limit how much secure knowledge an individual can generate on his or her own. Individuals working in consort are required, but social groups can be organized in many different ways. The key feature of the social organization in science is that only working scientists can confer the most important reward in science--use--and scientists must use each other's work in order to succeed in realizing this goal. An analysis of science as a selection process serves quite a different function. Individual scientists strive to come up with novel solutions to significant problems. The question then becomes how to be creative. From a selective perspective, science as a process involves the production of numerous alternatives and a selection among them. A single scientist solving an important problem makes science look very efficient. Treating science as a selection process casts it in a very different light. In this paper I combine an invisible hand mechanism with a selective perspective in order to explain why science is as successful as it is. I do not make recourse to evolutionary epistemology in any of its traditional senses.  相似文献   

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The global malaria situation, especially in Africa, and the problems frequently encountered in chemical control of vectors such as insecticide resistance, emphasize the urgency of research, development and implementation of new vector control technologies that are applicable at regional and local levels. The successful application of the sterile insect technique (SIT) for the control of the New World screwworm Cochliomyia hominivorax and several species of fruit flies has given impetus to the use of this method for suppression or elimination of malaria vectors in some areas of Africa including Northern State of Sudan. The research and development phase of the Northern State feasibility study has been started. Sudanese stakeholders are working side-by-side with the International Atomic Energy Agency in the activities of this important phase. Several ethical, legal and social issues associated with this approach arose during this phase of the project. They need to be seriously considered and handled with care. In this paper, these issues are described, and the current and proposed activities to overcome potential hurdles to ensure success of the project are listed.  相似文献   

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The rapid increase of available scientific knowledge is largely due to the introduction of novel research strategies. The application of these strategies, both in fundamental and in translational scientific research, leads to bursts of technological innovations. In order to fulfill the justified public request for sustainability of technological innovations that contribute to the shaping of the future, increasing attention should be given to science-based technology and policy assessment. These requests are illustrated by benefit/risk evaluations of relevance for the use of genetic engineering as an efficient and effective research strategy. Expected benefits of a responsibly planned introduction of GM crops are outlined as a prospective example for the guiding theme “Biotechnology for sustainability of human society”.  相似文献   

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This article examines how North Carolina tobacco farmers think about the moral ambiguities of tobacco business. Drawing on ethnographic research with tobacco farmers and archival research on the tobacco industry, I specify the core psychological defense mechanisms that tobacco companies have crafted for people associated with the industry. I also document local social, cultural, and economic factors in rural North Carolina that underpin ongoing rural dependence on tobacco despite the negativity that surrounds tobacco and structural adjustments. This article contributes to our knowledge about tobacco farmers and tobacco farming communities, which is important for tobacco-control strategies. I reflect on ethical and economic paradoxes related to the rise of corporate social responsibility in the tobacco industry, where an official legal framing of consumption, focused on informed adult consumer autonomy and health education, is promoted to undermine more robust public health prevention efforts.  相似文献   

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This paper reports on winter social behaviour in free-living and captive flocks of dark-eyed juncos (Junco hyemalis). Visual and vocal signals used by flocked juncos are analysed structurally and functionally. An examination is made of the frequency and form of agonistic behaviour in several social and environmental contexts in an attempt to provide insight into the relationship between junco communication and social organization. A system of classification of signals, based upon the meaning of cues to the signaller, is proposed. Evidence is given to suggest that the behaviour of subordinate, rather than of dominant, individuals controls the operation of the social system in junco flocks. Some ecological implications of junco social behaviour are discussed.  相似文献   

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