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51.
Active travel is associated with improved health and development outcomes in children. Accurate detection of children's travel behaviors and routes, however, is problematic. Travel diaries are often used to collect information on children's travel behaviors, yet no evidence for the accuracy of this methodology exists. This study investigated the validity of children's self-reported trips (origin, destination) compared with an objective criterion (global positioning systems units; GPS). Children (n = 10, 9–11 y) wore the GPS units for seven consecutive days between March and June 2011 and completed travel diaries daily with researcher assistance. Affinity group interviews were conducted in December 2011 with 30 children from two schools to garner perspectives on trip definition, neighborhood perceptions, and to illuminate GPS and travel diary findings. GPS journeys were manually compared with travel diary journeys for destination sequencing, start times, and travel mode. Accuracy in trip sequencing was compared by day type, and journey type using percentage differences and the chi-square (χ2) statistic. Of the 380 trips captured, 54.5% of journey sequences were fully or partially matched, 22.4% were GPS only trips and 23.2% travel diary only. Greater accuracy (full/partial match) was observed for weekdays than for weekend days and for the journey to or from school than for other journeys. Travel mode agreement existed for 99% of matched trips. Although children's travel diaries may confer contextual journey information, they may not provide completely accurate information on journey sequencing. Thematic analysis of affinity group data revealed that reasons for this are multifaceted, including differing concepts of what constitutes a ‘trip’. A combined approach of GPS and travel diary is recommended to gather a comprehensive understanding of children's journey characteristics.  相似文献   
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While the literature on economic restructuring tends to understand neoliberalism as a uniform governance ideology or economic-political reality, we suggest that it is more useful to understand neoliberalism as a loosely knit assemblage of programmatic efforts that consist of various political rationalities and practices of rule that aim to manage social conduct. The paper focuses on the various ways that these efforts are connected to complex state rescaling processes in Canada. Specifically, the first part of the paper examines the restructuring of nation-state responsibilities in social service and security provisions. It illustrates the shift toward a new citizenship regime that renders women as active agents who are responsible for solving problems in an individualized manner. The second part of the paper exemplifies how neoliberal programmatic efforts create new spaces of governance, particularly those of flexibility through non-standard work. The massive rescaling of the public sector, the decreasing demand for women's ‘traditional’ occupations, and the increasing prevalence of women in non-standard work arrangements constitute women as political-economic subjects in new ways. We analyze these processes using data drawn from in-depth interviews with personnel in the Canadian Federal Public Service. We outline some of the implications these initiatives have had on public service programmes and various public sector groups. Additionally, we provide a selection of individual accounts of public sector restructuring and gendered work by professionals and contract workers employed in the public service, and offer empirical illustrations of the contentions surrounding neoliberal restructuring initiatives.  相似文献   
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Albania is a possible stepping-stone for the dispersal of Homo sapiens into Europe, since Palaeolithic traces (namely from the so-called Uluzzian culture) have been discovered in neighboring Greece and Italy. After two years of searching for evidence of modern humans in Albania we here report on excavated test trenches representing two time slices: an Aurignacian open-air site from southern Albania and two Epigravettian cave sites in central and northern Albania—areas heretofore archaeologically unknown. The new Albanian data fill a gap in the eastern Adriatic archaeological record for Marine Isotope Stages 3 and 2. Adding current knowledge of Late Pleistocene landscape evolution, a “contextual area model” can be constructed describing the habitats of these human populations.  相似文献   
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How did traditional farming transform the natural environment in the Hawaiian Islands? This question is one that has largely been addressed for rainfed farming of crops like sweet potato (Ipomoea batatas), but evidence is lacking for irrigated farming of the critical staple crop taro (Colocasia esculenta). We describe the results of soil nutrient and sedimentological analyses of deeply-stratified pondfield deposits representing a 600-year-long record of irrigated taro farming in the North Kohala District, Hawai‘i Island. Soil is categorized by particle size to determine modes of transport and deposition, and concurrent soil nutrient analyses were conducted to infer shifts in the source of sediments and changes associated with taro harvesting. The advent of farming is clearly detectable in sedimentology, the presence of charcoal found within sediments, and soil chemistry. However, diminished nutrient concentrations can be attributed largely to deposition of a mixture of upstream sediments. Overall, there is no clear evidence for nutrient draw-down by taro harvesting, but we cannot yet rule it out as a factor. This study demonstrates the inherent difficulty of correlating changes in soil nutrients evident in irrigated pondfields with the long term history of soil nutrient cycling.  相似文献   
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Carbon and nitrogen isotope analysis was undertaken on collagen extracted from eel bone from six Mesolithic and Neolithic sites in northern Europe. The results were compared with data obtained on other archaeological fish remains and modern eel caught in fresh and brackish water and from the sea. The possibility of discriminating between freshwater, brackish and marine signals in archaeological eel bone is evaluated and the implications for archaeology discussed. Our data suggest that eel found at coastal Mesolithic and Neolithic sites have carbon isotope signals consistent with a marine origin with no evidence of freshwater residency. The sample of eel bone from one inland site is small but indicates carbon isotope values more consistent with freshwater residency or at least values intermediate between freshwater and marine carbon pools.  相似文献   
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New settlements play an important role in planning for new residential needs. These arise from population growth, household change or de‐concentration from urban centres. The designation of a new settlement is a complex process as shown by the experience in Grampian Regional Council. This case study raises a number of questions for the effectiveness of strategic and local planning in Scotland and the rest of the UK.  相似文献   
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