10,774 research outputs found

    They Bleed But They Don’t Die: Towards a Theoretical Canon On Ga-Adangbe Gender Studies

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    Contemporary African women are often cast as existing below the glass ceiling. African women who are perceived as having overcome this glass threshold are therefore seen and celebrated as exceptional. Against this background, this essay offers conceptual tools with which to examine the lives of historical and contemporary women in Ga traditional society of Ghana, living beyond the glass ceiling. Drawing a distinction between the role of women in the modern nation-state and traditional societies, this study asserts that unlike the situation in modern governance, structures and practices of Ga traditional societies have enabled Ga women to live beyond the glass ceiling. Acknowledging the non-static and dynamic evolution of Ga traditional society, this paper explores how Ga women exercise public and private power in Ga society

    Charm Lifetimes and Mixing

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    A review of the latest results on charm lifetimes and D-mixing is presented. The e+e- collider experiments are now able to measure charm lifetimes quite precisely, however comparisons with the latest results from fixed-target experiments show that possible systematic effects could be evident. The new D-mixing results from the B-factories have changed the picture that is emerging. Although the new world averaged value of y_CP is now consistent with zero, there is still a very interesting and favoured scenario if the strong phase difference between the Doubly-Cabibbo-suppressed and the Cabibbo-flavoured D0 -> Kpi decay is large.Comment: Presented at the 9th International Symposium on Heavy Flavors, Caltech, Pasadena, 10-13 Sept. 2001. To appear in proceeding

    BTG interacts with retinoblastoma to control cell fate in Dictyostelium.

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    In the genesis of many tissues, a phase of cell proliferation is followed by cell cycle exit and terminal differentiation. The latter two processes overlap: genes involved in the cessation of growth may also be important in triggering differentiation. Though conceptually distinct, they are often causally related and functional interactions between the cell cycle machinery and cell fate control networks are fundamental to coordinate growth and differentiation. A switch from proliferation to differentiation may also be important in the life cycle of single-celled organisms, and genes which arose as regulators of microbial differentiation may be conserved in higher organisms. Studies in microorganisms may thus contribute to understanding the molecular links between cell cycle machinery and the determination of cell fate choice networks. Here we show that in the amoebozoan D. discoideum, an ortholog of the metazoan antiproliferative gene btg controls cell fate, and that this function is dependent on the presence of a second tumor suppressor ortholog, the retinoblastoma-like gene product. Specifically, we find that btg-overexpressing cells preferentially adopt a stalk cell (and, more particularly, an Anterior-Like Cell) fate. No btg-dependent preference for ALC fate is observed in cells in which the retinoblastoma-like gene has been genetically inactivated. Dictyostelium btg is the only example of non-metazoan member of the BTG family characterized so far, suggesting that a genetic interaction between btg and Rb predated the divergence between dictyostelids and metazoa. While the requirement for retinoblastoma function for BTG antiproliferative activity in metazoans is known, an interaction of these genes in the control of cell fate has not been previously documented. Involvement of a single pathway in the control of mutually exclusive processes may have relevant implication in the evolution of multicellularity

    Older Workers and On-the-Job Training in Canada: Evidence from the WES Data

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    This paper provides evidence of on-the-job training among older workers in Canada. It also examines the effect of age associated with on-the-job training. Statistics Canada’s Workplace and Employee Survey (WES) 2001 data, linking employee responses to workplace (i.e. employer) responses are used. Three quarters of workers are categorized as middle aged, with about one in ten being younger and one in five considered to be older. Only 32% of Canadian workers received on-the-job training in the year preceding this survey. When separating workers into the three age categories, 37%, 34%, and 24% of younger, middle-aged, and older workers, respectively, received on-the-job training in that year. Logistic regression analysis results showed that, controlling for workplace, job and individual factors, as compared to middle-aged workers, older workers are significantly less likely to receive on-the-job training. The lack of on-the-job training for older workers should be a concern for policy makers at a time when labour shortages are being predicted. Older workers are healthier than ever and the provision of on-the-job training should be encouraged to retain older workers in the labour market in Canada.older workers, on-the-job training, Workplace and Employment Survey

    A Note on Optimal Effort in the Maldivian Tuna Fishery

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    This note argues that spatial considerations and travel costs should be taken into account in devising tax/subsidy regulations for island-based tuna fisheries. In particular, the effect of a landings tax on distant fishing grounds should be considered when setting the level of the tax. A fuel subsidy is suggested as a means of offsetting the impact of the landings tax on marginal grounds.Environmental Economics and Policy, Research Methods/ Statistical Methods, Resource /Energy Economics and Policy,
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