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Excavations by the joint University of Khartoum/Southern Methodist University Butana Project in the area just north of Khashm el Girba on the upper Atbara River have uncovered a series of preceramic and early ceramic occupations by hunters and gatherers which date fromca 10,000 bp toca 6200 bp. The earlier sites show no direct relations with those of similar age in the northern Sudan, while the later, early ceramic sites show only minor similarities with contemporary occurrences in the central Nile Valley. Thus, it appears that the upper Atbara River Valley played no role in the development of the Khartoum Mesolithic and that Nilotic influences were late reaching the eastern Sudan.
Résumé Des fouilles entreprises par le projet Butana dirigé en commun par l'université de Khartoum et le Southern Methodist University dans la région juste au nord de Khashm el Girba sur le cours supérieur de l'Atbara, ont découvert une série d'occupations précéramiques et céramiques anciennes de chasseurs-cueilleurs, qui datent deca 10,000 bp àca 6200 bp. Les gisements les plus anciens ne semblent pas avoir eu de relations directes avec ceux de la même période dans le nord du Soudan, tandis que les gisements plus tardifs à céramiques ne montrent que de petites analogies avec des occupations contemporaines dans la vallée centrale du Nil. Il semble donc que la haute vallée de l'Atbara n'a joué aucun rôle dans le développement du Mésolithique de Khartoum et que des influences nilotiques n'atteignirent que bien plus tard le Soudan oriental.
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Many factors governed the penetration efficacy of prehistoric projectile weaponry. Archaeologists broadly focus their efforts on understanding the effect of stone weapon tips because these specimens are often the only part of the weapon system that survives in the archaeological record. The tip cross-sectional area (TCSA) and perimeter (TCSP) of stone weapon tips have been shown to correlate with target penetration depth. Here, using results from both static and dynamic penetration testing, we compare TCSA and TCSP against other tip geometry metrics: lateral surface area (LSA) and volume (V). Our analyses broadly show that using a single-point geometry metric evaluated at multiple locations along the length of the point, or using multiple geometry metrics evaluated at a single location, better predicts required energy than using a single-point geometry metric evaluated at a single location. Our results also show that in the case where a single geometry metric evaluated at multiple locations is used LSA provided the most robust prediction models. Finally, our results show that for the case where all geometry metrics evaluated at a single location are used the location that provides the most robust prediction model is dependent on how far the point penetrated the target.  相似文献   
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Book reviews     
Australian Politics

Douglas Blackmur, Strikes: Causes, Conduct and Consequences (Sydney: The Federation Press, 1993) pp.232 $n.p. ISBN 1 86287 114 0.

W.D. Borrie, The European Peopling of Australasia (Canberra: Demographic Program, RSSS, Australian National University, 1994) pp.403 $24.50 ISBN 0 7315 1860 8.

Deborah Brennan, The Politics of Australian Child Care: From Philanthropy to Feminism (Cambridge: Cambridge University Press, 1994) pp.242 $29.95 ISBN 0 521 41792 9.

Peter Gathercole, T.H. Irving and Gregory Melleuish (eds), Childe and Australian Archaeology, Politics and Ideas (Brisbane: University of Queensland Press, 1995) pp.241 $16.95 ISBN 0 7022 26130.

Gerard Henderson, Menzies’ Child: The Liberal Party of Australia (Allen & Unwin, Sydney, 1994) pp.382 $29.95 ISBN 1 86373 747 2.

Dean Jaensch, Election! How and why Australia votes (Sydney: Allen & Unwin, 1995) pp.155 $19.95 ISBN 1 86373 761 8.

John Murphy, Harvest of Fear: A History of Australia's Vietnam War (Sydney: Allen & Unwin, 1993) pp.335 $19.95 ISBN 1 86373 49 X.

Bron Stevens and John Wanna (eds), The Goss Government: Promise and Performance of Labor in Queensland (Melbourne: Macmillan Education Australia, 1993) pp.292 $29.95 ISBN 0 7329 2622 X.

Beverley Symons (compiled with Andrew Wells and Stuart Macintyre), Communism in Australia: A Resource Bibliography (Canberra: National Library of Australia, 1994) pp.281 $25.00 ISBN 0 642 10625 8.

W.A. Townsley, Tasmania: Microcosm of the Federation or Vassal State 1945–1983 (Hobart: St David's Park Publishing, 1994) pp.451 $n.p. ISBN 0 7246 2345 0.

Comparative and International Politics

David Baldwin (ed.), Neorealism and Neoliberalism: The Contemporary Debate (New York: Columbia University Press, 1993) pp.377 $US56.50 ISBN 0 231 08440 4.

Leon Brittan, Europe. The Europe We Need (London: Hamish Hamilton, 1994) pp.248 $35.95 ISBN 0 261 00249 4.

Desmond Dinan, Ever Closer Union? An Introduction to the European Community (Boulder, Colorado: Lynne Rienner, 1994) pp.532 $US19.95 ISBN 1 55587 388 X.

Francis G. Castles (ed.), Families of Nations: Patterns of Public Policy in Western Democracies (Aldershot: Dartmouth Publishing Company, 1993) pp.353 £37.50 ISBN 1 85521 345 1.

Hans Magnus Enzensberger, Civil War (Granta Books: London, 1994) pp.144 $14.95 ISBN 0 14 014094 8.

Gareth Evans and Bruce Grant, Australia's Foreign Relations: in the world of the 1990s (Melbourne: Melbourne University Press, 2nd ed., 1995) pp.417 $34.95 ISBN 0 522 84657 2.

S. Henningham and R.J. May (eds), Resources, Development and Politics in the Pacific Islands (Bathurst: Crawford House Press, 1992) pp.323 $24.95 ISBN 186333063 1.

Helen Hughes, Wolfgang Kasper and John Macleod, Australia's Asian Challenge (Sydney, The Centre for Independent Studies, CIS Policy Forums 12, 1994) pp.47 $7.95 ISBN 1 86432 000 1.

Fergal Keane, The Bondage of Fear: A Journey Through the Last White Empire (London: Viking, 1994) pp.242 £17.00 ISBN 0 670 85391 7.

Bradley S. Klein, Strategic Studies and World Order: The Global Politics of Deterrence (Cambridge: Cambridge University Press, 1994) pp.196 £11.95 ISBN 0 521 46644 X.

Roy Licklider (ed.), Stopping the Killing: How Civil Wars End (New York: New York University Press, 1993) pp.354 $US50.00 ISBN 0 8147 5070 2.

Andrew Maclntyre (ed.), Business and Government in Industrialising Asia (Sydney: Allen & Unwin, 1994) pp.312 $29.95 ISBN 186373 556 9.

Michael McKinley, The Gulf War: Critical Perspectives (Sydney: Allen & Unwin, 1994) pp.201 $24.95 ISBN 1 86373 606 9.

Robert F. Miller (ed.), The Development of Civil Society in Communist Systems (Sydney: Allen & Unwin, 1992) pp.197 $22.95 ISBN 1 86373 1717.

Kim Richard Nossal, Rain Dancing: Sanctions in Canadian and Australian Foreign Policy (Toronto: University of Toronto Press, 1994) pp.323. $US21.95 ISBN 0 8020 7571 1.

Barnett R. Rubin, The Fragmentation of Afghanistan: State Formation and Collapse in the International System (New Haven: Yale University Press, 1995) pp.378 $US35 ISBN: 0 300 05963 9.

Dennis J.D. Sandole and Hugo van der Merwe (eds), Conflict Resolution, Theory and Practise: Integration and Application (Manchester: Manchester University Press, 1993) pp.298 $55.00 ISBN 0 7190 3748 4.

Jan Aart Scholte, International Relations of Social Change (Buckingham: Open University Press, 1993) pp.186 $45.00 ISBN 0 335 09329 9.

Susan L. Shirk, How China Opened its Door: The Political Successes of the PRC's Foreign Trade and Investment Reforms (Washington DC: Brookings Institute, 1994) pp.120 $US28.95 ISBN 0 8157 7854 6.

Stephen John Stedman (ed.), South Africa: The Political Economy of Transition (Boulder and London: Lynne Rienner, 1994) pp.213 $US38.00 ISBN 1 55587 421 5.

Lionel Cliffe et al, The Transition to Independence in Namibia (Boulder and London: Lynne Rienner, 1994) pp.293 $US38.00 ISBN 1 55587 420 7.

Frederick C. Teiwes, Politics and Purges in China: Rectification and the Decline of Party Norms, 1950–1965. 2nd edn (Armonk and London: M.E. Sharpe, 1993) pp.594 $US27.95 ISBN 1 56324 227 3.

Luke Trainor, British Imperialism and Australian Nationalism: manipulation, conflict and compromise in the late nineteenth century (Cambridge: Cambridge University Press, 1994) pp.213 $29.95 ISBN 0 521 43476 9.

United Nations High Commissioner for Refugees, The State of the World's Refugees: The Challenge of Protection (London: Penguin, 1993) pp.191 $19.95 ISBN 0 14 023487.

Joyce N. Wiley, The Islamic Movement of Iraqi Shias (Boulder and London: Lynne Rienner, 1992) pp.193 $US30.00 ISBN 1 55587 2727.

David W. Ziegler, War, Peace and International Politics, 6th ed. (London: Harper Collins, 1993) pp.458 $n.p. ISBN 0 673 52287 3.

Political Theory and Methodology

Stephen Eric Bronner, Of Critical Theory and Its Theorists (Oxford: Basil Blackwell, 1994) pp.372 $45.00 ISBN 0 631 18738 3.

William James Booth, Patrick James and Hudson Meadwell (eds), Politics and Rationality (Cambridge: Cambridge University Press, 1993) pp.307 $39.95 ISBN 0 521 43568 4.

Richard Sylvan and David Bennett, The Greening of Ethics: From Human Chauvinism to Deep‐Green Theory (Cambridge, UK: White Horse Press, 1994) pp.269 £11.95 ISBN 0 8165 1529 8.

Danilo Zolo, Democracy and Complexity: A Realist Approach. David McKie (trans.) (Cambridge: Polity Press, 1992) pp.202 $39.95 ISBN 0 7456 0675 X.  相似文献   

6.
Abstract. This article considers the debate that has recently developed in studies of nationalism between those scholars who see the nation as a modern and constantly changing construction ex nihilo and those who see it as an immemorial, unchanging communal essence. It outlines the so-called ‘gastronomical’ and ‘geological’ metaphors of nation formation and suggests a synthetic model which balances the influence of the ethnic past and the impact of nationalist activity. It shows that the central question which has divided theorists of nationalism is the place of the past in the life of modern nations. The author recognises the role of nationalists in national mobilisation but stresses that nationalists are not social engineers or mere image makers as modernist and post-modernist accounts would have it, but rather social and political archaeologists whose activities consist in the rediscovery and reinterpretation of the ethnic past and through it the regeneration of their national community.  相似文献   
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