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Sustainable development policies are on the move. Cities the world over are repositioning, repackaging and remarketing themselves as green and sustainable, and sustainable development is the moniker imported to spark the process. At the same time, sustainable development, as a normative point of departure, is itself going through cycles of reinterpretation and re-composition. The research in this article aims to understand this process by mapping the trajectories of sustainable development policies, and understanding sustainable development as a contextually grounded policy in motion. In Luxembourg, as planners are confronted with finding ways to manage growth, sustainable development has come to permeate all levels of the planning system. To understand how this came into being, research methods were employed that included document screening and a series of conversational interviews that were later transcribed and coded. In so doing, the discourse around sustainable development policy could be reconstructed and analysed. The results showed that the multi-scalar, cross-national, and simultaneously micro-level governance structures pose many obstructions to the implementation of sustainable development policies that are imported from abroad. Thus, policy is ultimately immobile, and a policy paralysis can be considered.  相似文献   
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Selection of an appropriate scale is an important decision in study design in many branches of science, since perceived patterns often change with the scales of spatial extent or resolution of an analysis. In previously published work, we created a resource selection model to determine the importance of several independent variables for the selection of lithic materials by hominins at a Middle Palaeolithic site in southern France. Two of these independent variables (calories exerted and difficulty of the terrain covered in travel from source to site) were calculated using elevation data extracted from maps. In the present paper, we examine the differences in model performance when the variables ‘Calories’ and ‘Difficulty’ are calculated using 1) three base maps for elevation that differed in map resolution (from finest to coarsest: a 1:25,000 topographic base map, SPOT DEM, and SRTM DEM), and 2) two different methods for determining the route from source to site (straight-line route and least-cost route; both methods exclude areas with slopes >60% from travel). Our best model was the one that used data calculated using the topographic base map; however, the SRTM DEM-based data produced models of essentially equal quality. Regardless of map scale, models that used data calculated using a straight-line route always outperformed models that used data calculated using a least-cost route. This supports our previous finding that a straight-line route is a more appropriate measure for the path from lithic source to site than a least-cost route. We conclude that the map resolution of each of the base maps used here is appropriate for analyses involving spatial data pertaining to Neandertal activity because this type of data is essentially always coarse-grained.  相似文献   
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This article explores the anarchists' multilayered theoretical and practical engagement with the concepts and performance of nations, nationalism and national belonging, by applying the frameworks of banal nationalism (understood as an ideology) and everyday nationhood (the daily practices in which nation and nationhood are enacted) as analytical categories, to investigate the Italian and French anarchist exile groups in London between 1870 and 1914. Adopting these theoretical categories proves fruitful in probing the anarchists' perception and enactment of the idea of nation and national belonging, contributing to the literature on the relationship between pre-1914 socialist movements and (inter)nationalism and highlighting the specificity of anarchism therein. Using Fox and Miller-Idriss's four categories of everyday nationhood, we show that while the anarchists explicitly subverted the everyday performance of nationhood, redeploying it along internationalist lines, some forms of attachment to the national did endure and were in fact not always contradictory with anarchist internationalism. Looking at the exilic rituals of this intensely diasporic group thus complicates the simplistic but still pervasive view of a monolithic ideological internationalism and rejection of the national on the part of anarchists.  相似文献   
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Based on a pooled time series analysis that covers a 30-year period at five different time points—1960, 1970, 1980, 1985, and 1990—this research examines the relationship between states' Aid to Families with Dependent Children (AFDC) payments and teen birth rates. Drawing on rational choice theories, we expected the effects of states' AFDC payments on their teen birth rates to be positive, taking into account states' divorce rates, population change rates, unemployment rates, racial composition, and poverty rates. The effects of states'AFDC payments were significant in a negative direction in Model 1, a random effects model; they also were significant in a negative direction in Model 2 when we controlled for the effects of year; however, when we controlled for the effects of year and state in Model 3, they were not significant. The findings do not support assumptions regarding the incentive effects of welfare that underlie rational choice theories in states where teen birth rates are higher. If anything, teen birth rates are higher in states where AFDC payments are lower. Implications for policy and further research are discussed in relation to the positive effects of states' poverty and population change rates on the state teen birth rate problem.  相似文献   
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