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221.
This article examines the economic processes and socio‐political institutions that shape women's involvement in community projects. Feminist materialism and postcolonial theory provide the framework to analyze these livelihood strategies as they are grounded in the material conditions of women's lives. The empirical study is based in a rural northern province of South Africa where colonialism and apartheid have contributed to extreme economic and social hardships. Fieldwork was conducted in Limpopo to analyze how community projects contribute to livelihood strategies. In an area where migrant remittances remain one of the main sources of income for rural households, women have increasingly engaged in collective economic strategies such as pottery making, sewing, and agricultural production. These strategies are embedded in a complex set of patriarchal institutions that reinforce unequal access to resources and have historically marginalized rural black women. Despite these barriers, findings from this study demonstrate that community projects provide the potential for economic and social empowerment, especially among rural women. 相似文献
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La Berge AF 《Journal of the history of medicine and allied sciences》2008,63(2):139-177
This article examines how faith in science led physicians and patients to embrace the low-fat diet for heart disease prevention and weight loss. Scientific studies dating from the late 1940s showed a correlation between high-fat diets and high-cholesterol levels, suggesting that a low-fat diet might prevent heart disease in high-risk patients. By the 1960s, the low-fat diet began to be touted not just for high-risk heart patients, but as good for the whole nation. After 1980, the low-fat approach became an overarching ideology, promoted by physicians, the federal government, the food industry, and the popular health media. Many Americans subscribed to the ideology of low fat, even though there was no clear evidence that it prevented heart disease or promoted weight loss. Ironically, in the same decades that the low-fat approach assumed ideological status, Americans in the aggregate were getting fatter, leading to what many called an obesity epidemic. Nevertheless, the low-fat ideology had such a hold on Americans that skeptics were dismissed. Only recently has evidence of a paradigm shift begun to surface, first with the challenge of the low-carbohydrate diet and then, with a more moderate approach, reflecting recent scientific knowledge about fats. 相似文献
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Ann B. Stahl Maria das Dores Cruz Hector Neff Michael D. Glascock Robert J. Speakman Bretton Giles Leith Smith 《Journal of Anthropological Archaeology》2008
Ceramic production, exchange and consumption in the Banda area, west central Ghana has been affected by historical developments ranging from recent competition with alternative vessels (made of metal and plastic) to political economic upheavals that altered community relationships within and outside the region. In this study, we explore spatial and temporal patterning in pottery production, exchange and consumption using a combination of analytical techniques. Instrumental neutron activation analysis (INAA) of a large sample (491 specimens) of archaeological and ethnographic pottery, clay and temper samples from sites across the Banda area has led to the identification of seven compositional groups whose differential distribution implies shifts in resource selection through the last thousand years. Laser ablation-ICP-MS analysis was used to explore the effects of distinctive tempering agents (crushed slag) on the bulk chemical signature of a subset of Banda ceramics, while petrographic analysis provides insight into the preparation of ceramic fabrics. We integrate insights from these diverse physical studies to investigate the dynamics of pottery production, exchange and consumption over the course of the last millennium in the Banda area and explore potential linkages with broader political economic transformations. 相似文献
225.
Zenobia Jacobs Ann G. Wintle Richard G. Roberts Geoffrey A.T. Duller 《Journal of archaeological science》2008
Optical ages for 14 sediment samples collected from the post-Howiesons Poort, late Middle Stone Age (MSA) and final MSA deposits at Sibudu, KwaZulu-Natal, South Africa were reported in a companion paper (Jacobs, Z., Wintle, A.G., Duller, G.A.T., Roberts, R.G., Wadley, L. New ages for the post-Howiesons Poort, late and final Middle Stone Age at Sibudu, South Africa. Journal of Archaeological Science, 2008). These ages were based on equivalent dose (De) distributions that were overdispersed. In this paper, we investigate factors both internal and external to the grains that may contribute to such higher than expected overdispersion in single grain De values. Intrinsic factors accounted for some, but not all, of the observed scatter, and application of a set of rejection criteria filtered grains for which erroneous De values would otherwise be calculated. We investigated sediment mixing and differences in the beta dose received by individual grains in their burial environment as two likely reasons for the observed overdispersion. The scatter in De distributions for all the samples is best explained by grains that were deposited at the same time and which were well bleached, but that subsequently received a range of beta doses. A procedure is presented for adjusting the measured beta dose rate, and its associated error. We show that using a combination of single grain OSL measurements of De, the finite mixture model and adjustment of the beta dose rate, result in stratigraphically consistent ages. These ages are more consistent than the ages obtained from multiple grain aliquot De values and the average dose rates for each sample; the multiple grain ages are about 10% older, partly because of the variable dose rate and partly because these aliquots contained grains with undesirable OSL characteristics. 相似文献
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Digital Imaging Analysis has been proposed as an efficient alternative to traditional petrography for some applications. This paper tests that proposition in the measurement of temper size and abundance in four pottery thin sections from the Pevey Site, Mississippi. The findings of both studies are presented here and the relative merits of the two techniques are evaluated in terms of accuracy, precision, cost, and time. 相似文献