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131.
Roger Blench 《Archaeological and Anthropological Sciences》2016,8(1):79-88
Finger millet, Eleusine coracana (Linn.) Gaertn. is usually considered to have been domesticated in tropical Africa. Nonetheless, it diffused across much of the Old World in prehistory, reaching Taiwan, the Himalayas, and Sumatra. The archaeobotanical record remains extremely patchy and the routes and dates of its arrival in many locations remain unknown. The paper makes use of comparative linguistics to begin the resolution of some of these issues. It reviews the archaeobotanical data which exists and then compiles tables of African and Asian names for finger millet. The paper identifies locally common linguistic roots, but there are no very widespread terms, suggesting there may a constant reborrowing of names with its near relative, goosegrass, Eleusine indica. A synthesis of the diffusion of finger millet is given at the end of the paper. 相似文献
132.
Endgame at Stalingrad: Book One: November 1942, The Stalingrad Trilogy,Volume 3 and Book Two: December 1942–February 1943. By
David M. Glantz and
Jonathan M. House. (Lawrence,KS: University Press of Kansas, 2014. Book One Pp. xxiii, 655. Book Two Pp. xxii, 724. $39.95 ea.)
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Roger R. Reese 《The Historian; a journal of history》2016,78(2):378-379
133.
Roger Ottewill 《Family & Community History》2016,19(1):50-62
The Edwardian era is generally regarded as witnessing the culmination of what has come to be known as ‘the first wave of feminism’. This presented challenges for those Christian denominations, such as Congregationalism, which sought to project a ‘progressive’ image. To prosper, Congregational churches in Hampshire depended upon skilful and industrious women, who often constituted two thirds of the membership. Yet despite the acknowledged contributions of women to church life, including Sunday school teaching, fund raising, pastoral care and social work, as well as moves within society towards enhancing their status, in the main they were excluded from positions of leadership. 相似文献
134.
Computing the Jacobian in Gaussian Spatial Autoregressive Models: An Illustrated Comparison of Available Methods 总被引:1,自引:0,他引:1
When estimating spatial regression models by maximum likelihood using spatial weights matrices to represent spatial processes, computing the Jacobian, ln(|I ? λW|), remains a central problem. In principle, and for smaller data sets, the use of the eigenvalues of the spatial weights matrix provides a very rapid resolution. Analytical eigenvalues are available for large regular grids. For larger problems not on regular grids, including those induced in spatial panel and dyadic (network) problems, solving the eigenproblem may not be feasible, and a number of alternatives have been proposed. This article surveys selected alternatives, and comments on their relative usefulness, covering sparse Cholesky and sparse LU factorizations, and approximations such as Monte Carlo, Chebyshev, and using lower‐order moments with interpolation. The results are presented in terms of component‐wise differences between sets of Jacobians for selected data sets. In conclusion, recommendations are made for a number of analytical settings. Al estimar modelos de regresión espacial con el método del máxima verosimilitud (máximum likelihood) y usando matrices de pesos espaciales para representar procesos espaciales, cálculo del término jacobiano (jabobian)—ln(| I ?λ W |)‐ sigue siendo un problema central. En principio, y para bases de datos más pequeñas, el uso de los valores propios (eigenvalues) de la matriz de pesos espaciales proporciona una solución muy rápida. Los eigenvalues analíticos para retículas o grillas grandes y regulares son ya conocidos. Para problemas más grandes, que no se presentan en mallas regulares ‐incluyendo aquellos que se inducen en problemas de paneles espaciales y en problemas de (redes) diádicas‐, es posible que resolver el eigenproblem no sea posible. Este artículo estudia una selección de alternativas y comenta acerca de su relativa utilidad. Se cubren las facorizaciones de tipo Cholesky disperso (sparse Cholesky) y de tipo LU dispersas (sparse LU), las aproximaciones Monte Carlo, y Chebyshev, así mismo se utiliza momentos de bajo‐orden (lower‐order) con interpolación. Los resultados se presentan en términos de diferencias de componentes entre sets de términos jacobianos para bases de datos seleccionadas. En conclusión, se hacen recomendaciones para una serie de contextos analíticos. 当采用表征空间过程的空间权重矩阵对空间回归模型进行最大似然估计时,雅可比矩阵ln(|I?λW|)的计算仍是核心问题。对于小数据集,原则上可利用空间权重矩阵的特征值提供一种快速的解决方案,对于大型规则格网数据特征值分析同样有效。但对于不规则格网大型问题,包括从空间面板和二元(网络)问题中引伸的问题,利用特征值的解决方案可能不适用,对此学术界提出了多种可选替代方案。本文选取已有的几种替代方案并评论各自的相对有效性,其中包括稀疏Cholesky分解和稀疏LU分解法,Monte Carlo和 Chebyshev近似模拟法以及低阶矩插值法。结果以所选数据集雅可比矩阵间特定组份的差异方式显示。最后,推荐了一些分析设定。 相似文献
135.
136.
137.
NORTH of the R. Tees pagan Anglo-Saxon cemeteries are only conspicuous by their virtual absence; and, from the ten undoubted examples known,1 both the quality and quantity of the objects recovered do little to illuminate the Anglo-Saxon element in the culture of Bernicia—a kingdom which probably owed much of its numerical strength to native British survival.2 In view of the scant evidence available, it is surprising that the finds from Darlington, the richest cemetery N. of the Tees, have never been fully published before.3 This paper seeks to make good this omission. 相似文献
138.
Roger Ivar Lohmann 《Reviews in Anthropology》2013,42(2):111-130
Anthropologists and historians encounter similar problems of analysis when attempting to decipher situations of first contact between Europeans and Oceanians and the resulting long-term historical processes these contacts triggered. Considering intercultural contact situations in Oceania, I stress the need to integrate anthropology and history to analyze such situations effectively. 相似文献
139.
Roger Sanjek 《Reviews in Anthropology》2013,42(4):588-597
Jeremy Boissevain and J. Clyde Mitchell, eds. Network Analysis: Studies In Human Interaction. The Hague: Mouton, 1973. xiii + 271 pp. Tables, figures, bibliography, and index. $11.00 (Dutch Guilders: 29). 相似文献
140.
Roger Sanjek 《Reviews in Anthropology》2013,42(2):115-134
Niara Sudarkasa. Where Women Work: A Study of Yoruba Women in the Marketplace and in the Home. Anthropological Papers, Museum of Anthropology, University of Michigan, No. 53. Ann Arbor: University of Michigan, 1973. x + 176 pp. Figures, tables, appendix, bibliography, plates. $4.00 (paper). Christine Oppong. Marriage among a Matrilineal Elite: A Family Study of Ghanaian Senior Civil Servants. Cambridge Studies in Social Anthropology 8. New York: Cambridge University Press, 1974. (Foreword by Meyer Fortes.) xv + 187 pp. Map, tables, appendix, bibliographies, index. $13.95. Kenneth Little. African Women in Towns: An Aspect of Africa's Social Revolution. New York: Cambridge University Press, 1974. viii + 242 pp. Appendix, bibliography, index. $16.50 (cloth), $5.95 (paper). 相似文献