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The ever-increasing concentration of people and economic growth in the largest cities relative to the rest of the country has slowed down or even reversed in many of the developed European countries over the last decade. This trend contradicts what the global cities, urban economics and new economic geography literature would predict. This trend can be interpreted from two points of view: (1) the trend is due to large obstacles to further large city urbanization and thus is inefficient or (2) this trend highlights alternative pathways to growth than the mega-city approach and may be as, if not more, efficient. This trend may be linked to Europe's uniquely polycentric urban structure with high number of small- and medium-sized cities. In addition, improvements in the access to services, including broadband, outside large cities may have facilitated the higher growth rates of smaller centres and rural regions and increased their appeal for residents and firms. Last but not least, negative externalities in the large cities, such as congestion costs, pollution, labour crowding and high cost of living, may increase the appeal of smaller centres and rural regions.  相似文献   
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In 1990, a target of universal access to basic education by the year 2000 was set by two global conferences. Ten years later, however, it was clear that the target had not been met. Too many countries had made insufficient progress, and although many of the reasons for this inadequate progress were country‐specific, one factor stood out in virtually all countries: inadequate public finance for primary education. In 2000, the Millennium Summit set a new target date for achieving ‘education for all’ of 2015. This article updates the global and regional cost estimates for reaching that target. The estimates are based on the most recent country‐by‐country data on budgetary expenditure, population and enrolment trends, and unit cost. The annual additional cost of achieving ‘education for all’ in developing countries by 2015 is estimated at US$ 9.1 billion. Although this is affordable at the global level, individual countries will need considerably more resources than are currently available. However, official development assistance (ODA) has been declining, and the share of ODA allocated to basic education has changed little over the past decade. Therefore, although affordable, the target of universal basic education by 2015 is likely to be missed, just as it was in 2000, without a major change both in ODA and national budgets.  相似文献   
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The article introduces the concepts of robustness and flexibility into the discussion on spatial quality to unpack the approach adopted by the Dutch province of Friesland in pursuit of their ambition to stimulate spatial quality. The analysis of how robustness and flexibility are manifested in Friesland, respectively the capacity to counteract negative impacts on spatial quality and the capacity to progress to more enhanced forms of spatial quality, reveals a multi-component, dynamic and selective approach. Multi-component refers to the combination of regulations, the building of purposeful organizations and teams and deliberate actions to influence spatial development projects and plans. It is dynamic because the approach is adapted to the dynamics of the multilevel governance system wherein the province and its actions are embedded. It is selective because spatial quality is reduced to a limited set of factors, decision-making is done by a selected set of actors and some measures tend to address a limited set of themes. The findings suggest that stimulating spatial quality strongly depends on how spatial quality is conceptualized and formalized in the arena of politics and planning, negotiated in multilevel decision-making processes alongside decisions on whether to make resources available for this purpose.  相似文献   
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Myanmar has been notably underrepresented in recent studies of archaeometallurgy in Southeast Asia, despite its richness in both mineral and cultural resources and its potentially central role in long-distance exchange networks linking India, China and peninsular neighbours. Here, we present original analytical data on copper-base artefacts from several Bronze Age and Iron Age sites in Myanmar. Observed microstructures range from as-cast, worked, to fully annealed; compositions include leaded copper, low-tin to high-tin bronzes, and arsenical copper/bronze. Lead isotope analyses indicate that the metal originates from different geological sources, including several that match the lead isotope signatures of known prehistoric copper mines in Thailand and Laos. These archaeometallurgical data, including evidence for secondary copper-base production, more than double those currently available for Myanmar and document the presence of multiple local alloying and working traditions, perhaps chronologically differentiated, as well as identifying possible links to primary mineral sources across the region. Overall, this adds significant new information to the emerging picture of Southeast Asian prehistoric metallurgy at the crossroads of several major ancient cultures.  相似文献   
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A huge monolithic piece corresponding to the first years of the sixteenth century has been discovered in Mexico City. It represents the earth goddess Tlaltecuhtli. The preservation of such a magnificent piece is imperative. Therefore, the surface has to be characterized and the interaction of consolidants with the rock has to be understood.Some of the consolidation methods are impregnation of the mineral with nopal or silicic acid derivatives. In this work we compare the physico-chemical effects of organic and inorganic consolidants. Original and impregnated samples are characterized with a series of original techniques: X-ray diffraction, nuclear magnetic resonance, nitrogen adsorption and small angle X-ray scattering. Fractal dimension, specific surface area and pore size distribution clearly differentiated the samples. The organic materials, nopal gum or slobber, cover the mineral particles with a smooth layer. The KSE solutions react and lead to microporosity.  相似文献   
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This paper studies the vertical and horizontal interactions between federal and regional governments in terms of public deficits. Recent studies commonly restraint budget slippages to the incentives created by the institutional arrangements within a country. Alternatively, we estimate here a fiscal reaction function for the Spanish regions over the period 1995–2010, paying special attention to the impact of the federal fiscal stance on regional fiscal imbalances. Our results indicate that higher public deficits for the central government encourage larger fiscal imbalances at the regional level. This vertical interaction is interpreted in the context of yardstick competition models. We also find a significant impact from fiscal decisions taken by governments at the same decision‐making tier in a specific region.  相似文献   
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Traditional taphonomic analyses do not consider the emergent properties resulting from the relationship of variables. Several of these emergent properties are expressed spatially. Here, we present a spatial taphonomic approach to the understanding of post-depositional processes affecting experimental assemblages modified by fluvial currents. Spatial statistical methods are a great tool to understand how different taphonomic variables relate at a spatial scale. The results of the application of this method to bone assemblages affected by low- and high-energy flows show the loss or modification of most of the original spatial taphonomic relationships. It also shows the degree of bone loss according to element, anatomical section and bone structure, and shape types. Anisotropy is identified in both experimental contexts. These results add new criteria to assess the impact of water flows in bone assemblages and contribute to define the properties of lag assemblages.  相似文献   
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