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In technological approaches to prehistoric industries, there is currently a renewed interest in the transformation of osseous materials. This approach requires the construction of a technical reference base of manufacturing stigmata, as well as of the procedures and methods used to produce tool blanks.One of the better known processes for the production of blanks in the Upper Palaeolithic is extraction by a double longitudinal groove, observed only in the Gravettian. Aurignacian artefacts indicate that during this period blanks were obtained through a procedure of longitudinal fracturing (splitting) or diffuse percussion fracturing. The manner of implementing these procedures is, however, still poorly known.In order to better characterise this stage in the manufacturing of blanks for antler points, we conducted an experimental study. Based on a thorough analysis of the Spanish archaeological materials, we tested the procedure of fracturing by indirect percussion on deer antler. The results provide new criteria for the identification of blanks and their manufacturing processes. They also emphasize the possibility of predetermining the size of the blank and, consequently, the size of future projectile point.  相似文献   
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This article contains an account of the career of John Eccles that can be divided into two parts. The first extends from 1925, when he won a Rhodes scholarship to Magdalen College Oxford, to 1975, when he took voluntary retirement from the State University of New York at Buffalo. During this period, he set up six different laboratories in which he carried out research on synaptic mechanisms that provide the basis of neuroscience. The second period is the 20 years between his retirement and death in Switzerland, which he spent on the problem of the relationship between mind and brain.  相似文献   
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Yonina Talmon. Family and Community in the Kibbutz. Cambridge, Mass.: Harvard University Press, 1972 (paper, 1974). xiii + 266 pp. Tables, appendix, references, and index. $12.00 cloth, $3.75 paper.

Lionel Tiger and Joseph Shepher. Women in the Kibbutz. New York: Harcourt Brace, Jovanovich, 1975. vii + 334 pp. Tables, notes, appendices, bibliography, and index. $10.95.  相似文献   
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Spinoza's use of the phrase “sui iuris” in the Tractatus Politicus gives rise to the following paradox. On the one hand, one is said to be sui iuris to the extent that one is rational; and to the extent that one is rational, one will steadfastly obey the laws of the state. However, Spinoza also states that to the extent that one adheres to the laws of the state, one is not sui iuris, but rather stands under the power [sub potestate] of the state (TP 3/5). It seems, then, that to the extent that one is sui iuris, one will not, in fact, be sui iuris. In this paper, I offer an interpretation of Spinoza's notion of being sui iuris that enables us to overcome this paradox and sheds light on Spinoza's relationship to the republican tradition. I work towards this goal by distinguishing between two ways in which Spinoza uses the locution, which correspond to two different conceptions of power: potentia and potestas. This distinction not only allows us to save Spinoza from internal inconsistency, it also enables us to see one important way in which Spinoza stands outside of the republican tradition, since he conceives of liberty not as constituted by independence, or citizenship in a res publica, but as being sui iuris in the first sense described above: being powerful.  相似文献   
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Abstract: By unravelling the adoption and adaptation of the North American Business Improvement District (BID) model in South African cities, this paper considers the way neoliberal principles are making their way in the post‐apartheid context. Drawing on a comparative approach of BIDs in Johannesburg and Cape Town, we analyse the tensions and conflicts surrounding their implementation and unpack the resilience of this model. As unexpected as this resilience might be in such a context, that is, far away from the heartland of neoliberalism, we argue that this resilience is linked to the permeability of the local contexts and to the plasticity of the model itself at the city and neighbourhood levels, reflecting a capacity to adapt to inherited regulatory frameworks, patterns of territorial development and embedded socio‐political alliances of the local terrains, as well as an ability to accommodate post‐apartheid issues through the crafting of what we refer to as “local Third Ways”.  相似文献   
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In a recent two‐part article on the nature of kinship, Marshall Sahlins maintains that performative criteria for kin‐reckoning are at least as salient as procreative ones, and that, at conception, an individual is endowed with a wide circle of kin, including the ancestral dead. For both reasons, he argues, there is no warrant for granting privileged status to what anthropologists have called ‘primary’ kinship. The contentions here are that performative criteria are modeled upon procreative ones; that ties to ancestral figures are seen as antithetical to procreative ties; and that, therefore, all kinship constructs are derived from nuclear family relationships. Evidence in support of these contentions is provided from the Mae Enga, Fiji, the Trobriands, and Aboriginal Australia.  相似文献   
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