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321.
Recent refinements in radiocarbon sampling procedures have enabled a more robust absolute chronology for the Mesolithic in the Rhine–Meuse–Scheldt area of northwest Europe. These refinements have allowed for a new chronological sub-division of the Early and Middle Mesolithic periods. Results of this research have indicated that the Middle Mesolithic period was bound by two Early Holocene cooling events, one at 9300 cal. BP and the other at 8200 cal. BP. These results enable a critical evaluation of the role of chronological precision in the investigation of contemporaneity between abrupt climate change and hunter–gatherer sociocultural change. In this paper we focus on the variable chronological resolution of the Early to Middle and Middle to Late Mesolithic transitions in the RMS area, and the role of this variable resolution in our ability to investigate the contemporaneity of these two transitions with different Early Holocene abrupt cooling events. This paper highlights two central challenges facing archaeological investigations of the relationships between climate and culture change: first, the requirement of tight chronological overlap between climate and culture change events and consideration of leads and lags in ecosystem and subsequent human responses to climate change; second, the equifinality problem and the separation of the impact of gradual from punctuated environmental change on human societies.  相似文献   
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The growing complexity of regional planning and design, in combination with increasing concerns about climate change and resource depletion, has revived the discussion on strategic thinking. Spatial planning and landscape architecture develop long-term visions to facilitate the gradual adaptation of the physical environment. Despite accomplishments in both disciplines, the two domains have yet to exploit the full potential of a joint approach to long-term regional design. The objective of the multidisciplinary study reported in this paper was to explore alternative means of developing imaginative yet robust long-term visions. The study combined literature study with the development of several long-term visions for the creation of sustainable energy landscapes. This paper focuses on the emerging methodological framework for long-term regional design, and argues that three modes of change should be integrated into the design process: change due to current projected trends, change due to critical uncertainties and intended change. Subsequently, a five-step approach to the development of long-term visions is derived and illustrated in this paper. The second paper of this two-part series, which will be published in the April 2012 issue of European Planning Studies, centres on the application and the discussion of the five-step approach to integrated visions.  相似文献   
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ABSTRACT This article examines the extent to which agglomeration economies in one location affect employment growth and establishment births, using data from the Dutch province of South‐Holland. The data are of particular interest because they represent a census, rather than a sample, of all establishments and the location of establishments can be pinpointed to within 416 (postal) zip code areas averaging less than 6 km2 in size. Results suggest that agglomeration economies positively affect employment growth and the location of new establishments, but with the possible exception of manufacturing, this effect dies out quickly with distance. Thus, the main finding is that for many industries, agglomerative forces may well operate at a geographic scale that is smaller than a city.  相似文献   
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Spanish colonial archaeology has undergone a fundamental shift since the Columbian Quincentenary due to the adoption of a bottom-up understanding of colonialism that emphasizes the analysis of local phenomena in a global context and the active ways in which people negotiated the processes set in motion by the conquest. This review examines five key research foci: culture change and identity, missionization, bioarchaeology, economics, and investigations of the colonial core. It ends with a consideration of ongoing challenges posed by the archaeology of colonialism, particularly the relationship of the individual to broader social processes and the emerging role of comparison.  相似文献   
328.
The existence of interrelations between different mobility forms is generally recognized, but they are not often studied. This article attempts to disentangle the complicated ways in which mobility decisions regarding labour, the house, and home-work travelling are related to each other and to phases in the life cycle. An empirical analysis is carried out from the perspective of individual life histories of employees in the medical sector. Their mobility careers are followed while their biographies unfold through a succession of socio-economic and demographic stages. It is shown how motives and patterns of mobility create and change the composition of certain social life-stage groups and determines who belongs to them.
L'existence d'interrelations entre formes de mobilité différentes est, en général, acceptée mais elle n'est pas souvent investiguée. Cet article vise à décrire d'une manière plus simple les décisions par rapport à la mobilité de travail, au logement et aux dieAplacements logement-travail, ainsi que leurs associations et leurs relations avec les étapes dans le cycle de vie. Une analyse empirique est menée dans la perspective des histoires de vie individuelle des employés du secteur médical. L'his-toire de leur mobilité est tracée et les biographies dévoilées selon une succession d'étapes socio-écono-mique et démographique. II est démontré comment les motifs et modèles de mobilité sont créés et comment ils changent la composition et l'appartenance à certains groupes sociaux durant leur vie.  相似文献   
329.
Quantitative indicators of change for non-commodity resource management were examined, to assess whether the United States Department of Agriculture Forest Service has been changing its on-the-ground management practices to give more emphasis to non-commodity resources. Specifically, data on recreation management and on wildlife and fish habitat management were analyzed to determine whether any shifts in the agency's management priorities had occurred. All data examined indicate that the Forest Service has been increasing its activities in non-commodity resource management over historic levels. When viewed in context with other recent studies suggesting that the Forest Service is moving away from traditional commodity production, the results of this study provide evidence that a significant shift has occurred, or presently is occurring, in Forest Service management practices.  相似文献   
330.
This paper examines developments and dilemmas in relations between local governments and indigenous Australians over the last quarter century. It establishes a framework for analysis based on differences in local government systems, circumstances and populations. It then examines two sets of developments in relations which have occurred in contrasting circumstances. The first is ongoing poor relations in incorporated local government areas, focusing on a complex of issues surrounding landownership, rates and services. The second is discrete predominantly Aboriginal or Torres Strait Islander communities in sparsely settled areas themselves becoming local governments. Both of these sets of developments are seen as being accompanied by significant dilemmas. In relation to the first, the major dilemma identified is how superordinate levels of government should best proceed in attempts to improve relations. In relation to the second, major dilemmas are identified relating to indigenous 'ownership' of the resulting local government structures and the weakness of the financial position of these newly emerging local governments. The paper suggests there have been some very significant and quite complex developments in relations between local governments and indigenous Australians over the last quarter century. However, these developments have only tentatively moved relations in a more positive direction, if indeed at all. Poor relations still predominate between local governments and indigenous Australians.  相似文献   
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