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A dasymetric map depicts a statistical surface, most commonly population density, as a set of simply connected regions, such that variation within each region is minimized and the region boundaries approximate the steepest escarpments of the surface. Dasymetric mapping has its roots in early thematic mapping of population, but has recently been taken up by researchers focusing on areal interpolation and population estimation using remote sensing. The process of dasymetric mapping typically involves the disaggregation of population data encoded in choropleth map form using an ancillary spatial data set, most commonly either an area‐class map or satellite image. The functional relationship between the ancillary data and the statistical surface being mapped may be specified a priori by the researcher or estimated using a variety of statistical techniques. Challenges facing dasymetric mapping research include handling spatio‐temporal data and the development of standardized and accessible methods.  相似文献   
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Home is one of the most emotive words in any language but our experience of being at home is historically and culturally specific. This article reviews a range of recent scholarship on the later medieval English urban household in the disciplines of History, Literary criticism and Archaeology. It has been composed collaboratively by the members of the York Medieval Household Research Group. After an introduction tracing the wider context in which all histories of domesticity are located, we focus in on our particular period through a close study of contemporary later medieval vocabularies of homeliness. This is followed by a sequence of short thematic sections addressing the historiography of different aspects the demographic structure, ideological construction and daily and emotional life of the household as reflected in the current interests of members of the group.  相似文献   
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The origin of Romita pottery has been a controversial topic during the last three decades of Colonial Mexico archaeological studies. Lead isotopic analyses of glaze coatings of Spanish and Mexican pottery, and Romita ceramics unearthed from the archaeological site of the Metropolitan Cathedral in Mexico City provide evidence that support a Mexican origin.  相似文献   
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ABSTRACT

In this essay, I examine an early modern battle between the Habsburg and Ottoman Empires, the Siege of Szigetvár, and its protagonists, Nikola ?ubi? Zrinski and Sultan Süleyman the Magnificent, as sites of memory in Hungary, Croatia, and Turkey. In relation to recent commemorations of the Siege, I focus on how sanctioned memories of Szigetvár have been sanitized for national(ist) ends, evacuating fraught historical and political questions related to the enmity between the two empires. Concomitantly, I pursue the silences and erasures that hegemonic memories of the battle and its protagonists have produced, both in relation to specific landscapes of memory in Szigetvár and through an analysis of three narratives of the Siege: a Hungarian-language epic poem, a Croatian opera, and a Turkish television serial.  相似文献   
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Bats form the second most diverse mammalian order (Chiroptera), after rodents, and vary widely in their physiology and ecology. Those species that live in temperate climates are generally insectivorous and nocturnal or crepuscular, sheltering in tree hollows, caves, or buildings during the day. They are potentially valuable ecological indicators, due to their dependence on suitable roosting sites and arthropod food, both of which are commonly affected by human activities. Identification of bats from ancient assemblages that are found in caves could therefore provide useful data for palaeoenvironmental reconstructions and show the effect of habitat loss. Here, we apply the recently developed approach of collagen fingerprinting by soft ionisation mass spectrometry to the identification of ancient bat remains in an archaeological assemblage from Pin Hole Cave (Derbyshire, England). Our results show that a simple set of markers can distinguish all seven genera of bats known to be present in either modern or ancient Britain (Myotis, Nyctalus, Pipistrellus, Barbastella, Plecotus, Eptesicus, and Rhinolophus). Further analysis indicates that species‐level determination is possible in some of these taxa, but it would more readily be achieved using the more advanced methods of collagen sequence analysis by liquid chromatography coupled with tandem mass spectrometry. Within our assemblage yielding ~6,800 ancient bone collagen fingerprints, we identified only ~1% that derived from chiropterans, and these were predominantly derived from Myotis (two apparent Brandt's bat fingerprints but the majority indistinguishable between the whiskered, Daubenton's and Natterer's bats), Barbastella (the western barbastelle being the only member of this genus known within Europe), and Rhinolophus (identified as the lesser horsehoe bat R. hipposideros rather than the rare greater horseshoe bat R. ferrumequinum). We infer that the site was likely used by roosting bats throughout the year, and the accumulation of these remains was probably not the result of predator activity. More importantly, the peptide biomarkers provided here could proove valuable in the more systematic analysis of microfaunal remains across many European archaeological and palaeontological sites, preferably those that are collected with well curated stratigraphical information and chronological frameworks.  相似文献   
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Jeremy Slack  Howard Campbell 《对极》2016,48(5):1380-1399
Many have debated whether or not human smugglers, known as coyotes, are involved with drug trafficking organizations. Scholars have largely rejected so‐called “narcocoyotaje”, however; we hope to problematize this narrative by adding a new theoretical layer to the discussion. Namely, we explore the ways in which different criminal activities produce hierarchies and control illicit activities within the clandestine geography of the US–Mexico border. These “illicit regimes” operate against the State, creating a hierarchy that dominates other illicit activities in order to maximize profit, avoid detection and consolidate power. While other studies have explored the relationships between the State and illicit practices this article takes the relationship between two illicit industries as its object of study. Doing so will help us move past the simply binary question about whether or not coyotes are involved with drug cartels, and allows us to understand what is being produced by this relationship, and its consequences for everyone involved.  相似文献   
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This article analyses student-learning outcomes from the redesign of Introduction to Physical Geography 101. Among the purposes of the redesigned course were to enhance student learning by providing rich interactive online content, provide more meaningful instructor–student and peer–peer exchanges, and to promote attitudes that facilitate student opportunities to construct new knowledge. Through empirically testing two of the redesigned course’s key components on students’ learning, we determine the positive effects on students’ exam scores. We offer, despite the additional work required from instructors and teaching assistants for such a redesigned course, that with further refinement these pedagogical changes may offer potential longer term impact on students’ learning behaviors.  相似文献   
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