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贺菊莲 《贵州民族学院学报》2014,(4):20-24
丝绸之路是饮食文化交流之路。汉唐时期西域饮食文化交流具体体现在西域各民族饮食文化间的交融、西域与中原饮食文化的互动及西域与中亚、南亚等地饮食文化间的交流。探析汉唐时期西域饮食文化交流,有助于促进文化交流史、社会生活史乃至经济史的研究,并能促进对西域多元文化的认识,使我们更为立体地认识和理解丝绸之路文化,为打造丝绸之路经济带提供文化资源。 相似文献
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We wish to test the null hypothesis if the means of N panels remain the same during the observation period of length T. A quasi-likelihood argument leads to self-normalized statistics whose limit distribution under the null hypothesis is double exponential. The main results are derived assuming that the each panel is based on independent observations and then extended to linear processes. The proofs are based on an approximation of the sum of squared CUSUM processes using the Skorokhod embedding scheme. A simulation study illustrates that our results can be used in case of small and moderate N and T. We apply our results to detect change in the “corruption index”. 相似文献
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We review the literature on youth employment. In particular, we highlight data suggesting youth is not a homogenous group, and that employment is not a homogenous experience for young workers. Demographic and motivational differences within the group categorized as 'youth', as well as differences in the context and quality of youth employment experiences, are shown to have substantial implications for research, policy and organizations. 相似文献
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The earnings premium received by African, urban, male union members in South Africa, as compared to other regular, urban male employees, is explored using two national sample surveys conducted in 1985 and 1993. The historical setting of this change is of particular interest, in the light of the transformation from the apartheid regime. Union membership grew very rapidly during this interval, as earlier prohibitions on African unions were lifted. Subsequently, the high rates of unemployment and segmentation of the labor force have been issues of central concern to the new government, elected in 1994. In this context, the paper extends prior methodology, by systematically comparing possible approaches to estimation, in addition to contributing fresh empirical results. Four approaches to estimation are adopted, allowing for: a single earnings regime with union dummy variable; the possibility of different earnings regimes among union members as compared to non‐members; endogenous switching between such regimes; sample selection arising from lack of employment and from division between regular and informal work. A series of tests on nested specifications indicate the importance of recognizing endogenous switching between differing pay structures in the covered and uncovered sectors. However (as with previous research on the South African labor market), no sample selection is detected with respect to employment status. The results suggest that collective bargaining resulted in wage compression among the expanding union membership while significantly widening the gap between members and non‐members. The latter widening gap cannot be attributed to the changing composition of union membership as reflected in observed characteristics of employees. 相似文献
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Faraway JJ Trotman CA 《Journal of the Royal Statistical Society. Series C, Applied statistics》2011,60(5):743-755
Continuous shape change is represented as curves in the shape space. A method for checking the closeness of these curves to a geodesic is presented. Three large databases of short human motions are considered and shown to be well approximated by geodesics. The motions are thus approximated by two shapes on the geodesic and the rate of progress along the path. An analysis of facial motion data taken from a study of subjects with cleft lip or cleft palate is presented that allows the motion to be considered independently from the static shape. Inferential methods for assessing the change in motion are presented. The construction of predicted animated motions is discussed. 相似文献
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Julian Williams 《思想、文化和活动》2013,20(3):276-292
I explore theoretical conceptions of the use and exchange values of mathematics education within cultural-historical activity theory perspectives. The case of education in England is compared with that of health care (due to Engestrom). Then I draw on Lave and McDermott's study of estranged learning from the early Marx, and from Marx's later analyses in Capital. They deduced the source of learners' alienation from learning in the enforced conditions of education, run by the educational establishment. However, I find their analogy limiting and hence erroneous. I turn to Capital to find the Marxian analysis of the “peculiar” commodity: Enhanced labor power. I conclude that the use-value of mathematics education derives from (a) learners' immediate consumption, and (b) their enhanced (mental) labor power. Although this explains the root, economic contradictions, cultural systems of exchange explain how these are symbolised in cultural forms of use and exchange value. 相似文献
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