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A largely accepted paradigm in African recent prehistory considers pastoralism to be the main subsistence source of food-producing communities along the Sudanese Nile valley from the 6th millennium cal BC onwards. This paradigm is constraining the development of a wider theoretical perspective that assumes, instead, a regionally differentiated picture of the economic and social organisation of local communities in northeastern Africa. This paradigm is thus the strongest impediment to achieving reliable and convincing syntheses of the transition from food collection to food production in this area. New data from Upper Nubia and central Sudan open the way for different and more complex scenarios and a new understanding of the local transition from agro-pastoral to agricultural practices. A more systematic data-based approach helps to change radically our perception of different Neolithic trajectories. Moreover, it helps to place in a different perspective—based on various levels of identity formation processes—change and continuity along the chrono-cultural sequence, as well as the different meanings that each local group confers on apparently similar acts in the context of the funerary ideology.

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The Mesolithic period represents a key stage in the human history of Sudan, but its complexity is not yet fully understood. Since the beginning of prehistoric research in this region, efforts were made to understand Mesolithic site formation processes and post-depositional disturbances. Responsibility for the destruction of most Mesolithic sites’ deposits rests mainly on later use of the ancient mound-like settlements as burial places by Meroitic and post-Meroitic people. Excavations at several sites in the El Salha and Al Khiday areas (White Nile, south of Omdurman) have provided recent progress in our knowledge of Mesolithic living structures in their palaeoenvironmental contexts. Detailed stratigraphic and geoarchaeological investigations enabled us to distinguish, within the sequences identified at excavated mounds, the existence of basal archaeological strata still in situ that had remained unaffected by subsequent anthropogenic disturbances and to understand the functional aspects of several archaeological features associated with Mesolithic living floors. This offers the opportunity to reassess the Mesolithic cultural sequence in the region and reconsider some statements on the economic and social aspects of Mesolithic life and landscape exploitation strategies.  相似文献   
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This paper explores a possible direction for enabling trans-national cooperation in Europe through forms of spatial planning harmonisation. The specific case considered is that of the trans-national border area located in the wider Alpine-Adriatic context, comprising Carinthia (Austria), Friuli Venezia Giulia (Italy) and Slovenia. Starting from a general analysis of spatial planning systems and identification of operational difficulties which may emerge within any one Member State's planning system—and which then may be compounded in a trans-national context—the paper considers the establishment of a “shared knowledge base” as well as a “shared vision” between the Member States as preconditions to fostering trans-national cooperation.  相似文献   
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The eighteenth-century "sexual revolution" cannot simply be explained as a consequence of economic or institutional factors -- industrialization, agricultural revolution, secularization, or legal hindrances to marriages. The example of western Valais (Switzerland) shows that we have to deal with a complex configuration of factors. The micro-historical approach reveals that in the eighteenth- and nineteenth-century sexuality -- and above all illicit sexuality -- was a highly subversive force that was considerably linked to political innovation and probably more generally to historical change. Nonmarital sexuality was clearly tied to political dissent and to innovative ways of behavior, both among the social elites and the common people. This behavior patterns influenced crucial evolutions in the social, cultural, and economic history of the region.  相似文献   
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Sandro Marcelo Scheffler, Rodrigo Scalise, Horodyski & Elvio Pinto, Bosetti, 2018. Morphology, palaeoecology and taphonomy of the Devonian mitrate Placocystella langei from Paraná Basin, Brazil. Alcheringa 43, 228–240. ISSN 0311-5518.

The original holotype and paratypes of the stylophoran mitrate Placocystella langei (Echinodermata) are definitively lost. A neotype is designated here, based on new material collected in the marine Devonian strata of the Apucarana Sub-basin, Paraná, Brazil. Placocystella langei was the first species of Stylophora to be identified in Devonian basins from Brazil. Its range extends from the late Emsian to early Givetian. Taphonomic data indicate that P. langei specimens were preserved in a storm-influenced, transitional offshore environment, and that skeletal remains were few exposed at the water–sediment surface. Considering that the specimens do not exhibit evidence of reworking, it is possible that their final burial was rapid and definitive, which facilitated their almost complete preservation. Finally, taphonomic, diagenetic and sedimentologic data all suggest a shallow infaunal habit for Placocystella langei.

Sandro Marcelo Scheffler [] Departamento de Geologia e Paleontologia, Laborat orio de Paleoinvertebrados (LAPIN), Museu Nacional—UFRJ, Parque Quinta da Boa Vista, s/n, São Cristóvão 20940040, Rio de Janeiro, RJ, Brasil; Rodrigo Scalise Horodyski* [] Graduate Program in Geology, Vale do Rio dos Sinos University, Av. Unisinos, 950, Cristo Rei, 93022-000 São Leopoldo, RS, Brasil; Elvio Pinto Bosetti [] Departamento de Geociências, Universidade Estadual de Ponta Grossa, Av. Carlos Cavalcanti 9.500, Uvaranas, 84010-919, Ponta Grossa, Paran a, Brazil.  相似文献   

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