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Levallois cores and products were manufactured by hominin populations distributed across wide regions of Africa and Eurasia. Levallois technology remains an important focus for research in Palaeolithic archaeology, yet quantitative morphological comparisons of Levallois core morphology from different regions remain rare. Here, utilizing Levallois cores from Africa, the Near East, Europe, and the Indian subcontinent, patterns of morphological variability in the shape of the Levallois flaking surface and core outline (margin) shape were examined for patterns of variability and stability across regions using 3D geometric morphometrics. The multivariate statistical shape analyses undertaken revealed a clear pattern: that is, the greatest levels of shape variability in Levallois cores is evident in the form of their outline (planform) shape. Conversely, the geometrical relationship between the margin of the Levallois cores and their topological surface morphology was relatively uniform. This pattern of variability was evident in terms of variation both across regions and between cores from the same locality. These results indicate that the outline form of such cores was a less important variable than the geometric/topological properties of the surface morphology and, in particular, the relationship between the margin of the core and those variables. These results have implications for why it has been reported that replicating such cores in modern experiments is a particularly difficult task. The specific interrelationship between the geometric properties of the core and the core margin provide further evidence that Levallois core technology would be unlikely to emerge from the context of opportunistic migrating platform reduction strategies (such as those seen in many Mode 1 industries). If, as is widely suggested, Levallois cores were deliberate products in Pleistocene contexts, these results also hint that relatively sophisticated means of social transmission (i.e. teaching) may have been required to sustain their production over time and space.  相似文献   
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Vietnam has had a national Payments for Forest Environmental Services (PFES) policy in place since 2010, which transfers money for forest protection from water and energy users to households who live in upland watersheds. However, despite a loose resemblance to general Payments for Ecosystem Services (PES) principles, implementation in Vietnam differs strongly from a theoretical ideal, and has a number of unique features, including: strong state involvement in transactions; no use of markets to set payments; poor definition and monitoring of ecosystem services; and the adoption of non-conditional incentives that strongly resemble livelihood subsidies for poor rural areas. The form that PES takes in Vietnam has been shaped by institutional histories of forest management that have envisioned a strong role for the state and for financial transfers to the rural uplands. At the same time, PES has also been influenced by active engagement and agency of central and local government actors, and local payment recipients, and key areas in which they have impacted PES design include shared governance and more equitable benefit distribution models. These institutional priorities and local values that have shaped PES policy and implementation in Vietnam have led to a hybrid model, full of contradictions and compromises, that neither fits a classical definition nor resembles neoliberal conservation outcomes, and whose success is difficult to judge.  相似文献   
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Abstract

It is Swedish government policy to use information and communication technologies to increase sustainability. This has implications for planning and local organization of communities. In the municipalities where most public services are provided, there are growing numbers of local contact centres (CCs) aiming to meet citizens' needs for information and coordination of public services. The CCs localize public services and combine different services into a one-stop practice focusing on needs and demands of individual citizens and their unique situations. The municipalities hereby have to plan for service provision in new ways to meet more individualized needs that are also in line with improved sustainability. CCs are both local offices and advanced services on-line, as e-governmental services. E-government could be considered fast government, but this article aims to turn that obvious first impression upside down and discuss how e-government can slow down and make services more local, personalized and sustainable. Theoretically we take off from a time-geographical modelling of slow processes that has implication for slower, more sustainable development. Based on in-depth case studies of municipal CCs we argue that they are tools towards improved sustainability and localism, and that they are “slowing up” administrative processes. In particular, we point out that e-government has a potential to plan for, and promote, sustainability and slow local development.  相似文献   
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Visualization in 19th‐century German geography: Robert Schlagintweit and Hans Meyer as examples. – Visual representations of nature formed an essential part of 19th‐century earth sciences. In particular, colonial photography – as a visual source, and as an instrument of the construction of national identities – serves essential research interests of current history and social sciences. The present paper is a case study on the role and function of photography in German geography of the 19th and early 20th centuries. It focuses on the work of the Munich geographer Robert Schlagintweit (1833–1885) and the Leipzig colonial geographer Hans Meyer (1858–1929); the early history of photography in India and the function of images in the geographical exploration of overseas territories are discussed. Although there is nearly half a century between the work of R. Schlagintweit and H. Meyer, their photography shows remarkable parallels. The ideas of both on the practice of visualization are rooted in pedagogic and didactic concepts as well as in popular science. For both geographers photography was essentially a technical help, which often needed graphic revisions. And they both preferred photography to depict people and buildings (compared, for instance, to landscapes). Concerning the more comprehensive question of how far their photography transmitted a specific German ‘image of abroad’, it is indicated that such a specific image should have its essential roots in a peculiar visual culture of German earth sciences in the first half of the 19th century. Thus the paper offers a starting point for further studies discussing the change from a ‘Biedermeier image’ of foreign cultures to a more ‘colonial’ one in 19th‐century German geography.  相似文献   
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In a popular scientific way this collection of essays is intended to present to a wider audience the findings of the excavation and preservation of the hitherto untouched tomb of Li Chui 李倕 (711–736), a 3rd degree cousin of Tang Emperor Li Longji 李隆基 as they had been documented in an interdisciplinary scientific publication before. Most remarkable among the objects excavated were her rich jewellery headgear and appliqués on her dress for their good condition and completeness. Whereas the majority of the essays go into the details of an archaeological and historical analysis supplemented by comparative aspects, there are some irrelevant and tiring essays that run off the topic of the book, besides other shortcomings. In conclusion the reviewer discusses the criteria that should be applied to any kind of popular scientific publication.  相似文献   
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