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This paper examines ethno‐symbolic and instrumental explanations of ethnic and sectarian identities placed within the constructivist turn in the study of political identity, both in the abstract and how they have been deployed to explain the increasing contemporary influence of ethnosectarian mobilisation in Iraq and the wider Middle East. The paper identifies explanatory value in these approaches but finds their focus on either ideational structures or individual rationality too narrow to provide a comprehensive explanation of what happened to political identities in Iraq after 2003. Instead, the paper deploys what can be termed a ‘Bourdieusian method’, in an attempt to get beyond the polarities of structure and agency. It uses Bourdieu's conceptions of political field, principles of vision and division and symbolic violence to understand the influence that de‐Ba'athification, the creation of the Muhasasa Ta'ifia or sectarian apportionment system and national elections had on political identities in Iraq since the 2003 invasion.  相似文献   
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Movement is the driving force behind the form and function of many ecological and human systems. Identification and analysis of movement patterns that may relate to the behavior of individuals and their interactions is a fundamental first step in understanding these systems. With advances in IoT and the ubiquity of smart connected sensors to collect movement and contextual data, we now have access to a wealth of geo‐enriched high‐resolution tracking data. These data promise new forms of knowledge and insight into movement of humans, animals, and goods, and hence can increase our understanding of complex spatiotemporal processes such as disease outbreak, urban mobility, migration, and human‐species interaction. To take advantage of the evolution in our data, we need a revolution in how we visualize, model, and analyze movement as a multidimensional process that involves space, time, and context. This paper introduces a data science paradigm with the aim of advancing research on movement.  相似文献   
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Spotted hyaena (Crocuta crocuta) remains have been recovered from British Middle and Upper Pleistocene sites at intervals within the period 700–730 ka BP. Morphological studies have suggested that hyaenas of the Last Interglacial sensu stricto (Ipswichian: Marine Isotope Stage [MIS] 5e, 130–115 ka BP) and Last Glacial (Devensian: MIS 3, 61–24 ka BP) were two distinct populations, the Ipswichian hyaenas becoming extinct in Britain during MIS 5 and the Devensian ones arriving via a subsequent migration from continental Europe. However, the apparent presence of hyaenas in later MIS 5 deposits has led to the alternative suggestion that there was a southern relict population from which the Devensian hyaenas originated. We obtained ancient DNA (aDNA) sequences from four Devensian hyaena specimens from Creswell Crags, Derbyshire, dated to around 45 ka 14C BP. Each of these four specimens belonged to the mitochondrial DNA (mtDNA) clade A. This clade is not thought to have been present in Europe until ~360 ka BP, after the initial arrival of hyaenas in Britain. The DNA results, therefore, suggest that there were at least two waves of hyaena dispersals into Britain. The results are consistent with the repeated dispersals into Britain of another Pleistocene social carnivore, Homo sapiens.  相似文献   
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In this commentary we reflect on the potential and power of geographical analysis, as a set of methods, theoretical approaches, and perspectives, to increase our understanding of how space and place matter for all. We emphasize key aspects of the field, including accessibility, urban change, and spatial interaction and behavior, providing a high-level research agenda that indicates a variety of gaps and routes for future research that will not only lead to more equitable and aware solutions to local and global challenges, but also innovative and novel research methods, concepts, and data. We close with a set of representation and inclusion challenges to our discipline, researchers, and publication outlets.  相似文献   
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