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Geographical Coverage (geographical + coverage)
Selected AbstractsTaxation, warfare, and the early fourteenth century ,crisis' in the north: Cumberland lay subsidies, 1332,13481ECONOMIC HISTORY REVIEW, Issue 4 2005CHRIS BRIGGS Recent research into the impact of Anglo-Scottish conflict on northern England's economy has become increasingly sophisticated, using local estate accounts to enhance understanding of the role of war in the 'crisis' of the early fourteenth century. Yet taxation data also remains an important source on these issues, not least because of its wide geographical coverage. Using a rich series of lay subsidy documents for Cumberland, this article concludes that the direct impact of Scottish raids was only one of several determinants of economic fortunes. More significantly, reconstructing the process of taxation shows that non-violent resistance to state levies was as responsible as war damage for a decline in revenue from the county. [source] THE PANOPTICON'S CHANGING GEOGRAPHYGEOGRAPHICAL REVIEW, Issue 3 2007JEROME E. DOBSON ABSTRACT. Over the past two centuries, surveillance technology has advanced in three major spurts. In the first instance the surveillance instrument was a specially designed building, Bentham's Panopticon; in the second, a tightly controlled television network, Orwell's Big Brother; today, an electronic human-tracking service. Functionally, each technology provided total surveillance within the confines of its designated geographical coverage, but costs, geographical coverage, and benefits have changed dramatically through time. In less than a decade, costs have plummeted from hundreds of thousands of dollars per watched person per year for analog surveillance or tens of thousands of dollars for incarceration to mere hundreds of dollars for electronic human-tracking systems. Simultaneously, benefits to those being watched have increased enormously, so that individual and public resistence are minimized. The end result is a fertile new field of investigation for surveillance studies involving an endless variety of power relationships. Our literal, empirical approach to panopticism has yielded insights that might have been less obvious under the metaphorical approach that has dominated recent scholarly discourse. We conclude that both approaches,literal and metaphorical,are essential to understand what promises to be the greatest instrument of social change arising from the Information Revolution. We urge public and scholarly debate,local, national, and global,on this grand social experiment that has already begun without forethought. [source] Spatial and temporal variability of the phenological seasons in Germany from 1951 to 1996GLOBAL CHANGE BIOLOGY, Issue 6 2001Annette Menzel Abstract Various indications for shifts in plant and animal phenology resulting from climate change have been observed in Europe. This analysis of phenological seasons in Germany of more than four decades (1951,96) has several major advantages: (i) a wide and dense geographical coverage of data from the phenological network of the German Weather Service, (ii) the 16 phenophases analysed cover the whole annual cycle and, moreover, give a direct estimate of the length of the growing season for four deciduous tree species. After intensive data quality checks, two different methods ,,linear trend analyses and comparison of averages of subintervals , were applied in order to determine shifts in phenological seasons in the last 46 years. Results from both methods were similar and reveal a strong seasonal variation. There are clear advances in the key indicators of earliest and early spring (,0.18 to ,0.23 d y,1) and notable advances in the succeeding spring phenophases such as leaf unfolding of deciduous trees (,0.16 to ,0.08 d y,1). However, phenological changes are less strong during autumn (delayed by +,0.03 to +,0.10 d y,1 on average). In general, the growing season has been lengthened by up to ,0.2 d y,1 (mean linear trends) and the mean 1974,96 growing season was up to 5 days longer than in the 1951,73 period. The spatial variability of trends was analysed by statistical means and shown in maps, but these did not reveal any substantial regional differences. Although there is a high spatial variability, trends of phenological phases at single locations are mirrored by subsequent phases, but they are not necessarily identical. Results for changes in the biosphere with such a high resolution with respect to time and space can rarely be obtained by other methods such as analyses of satellite data. [source] Efficient packet scheduling for heterogeneous multimedia provisioning over broadband satellite networks: An adaptive multidimensional QoS-based designINTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING, Issue 1 2009Hongfei Du Abstract With their inherent broadcast capabilities and reliable extensive geographical coverage, the broadband satellite networks are emerging as a promising approach for the delivery of multimedia services in 3G and beyond systems. Given the limited capacity of the satellite component, to meet the diverse quality of service (QoS) demands of multimedia applications, it is highly desired that the available resources can be adaptively utilized in an optimized way. In this paper, we draw our attention on the development and evaluation of an efficient packet scheduling scheme in a representative broadband satellite system, namely satellite digital multimedia broadcasting (SDMB), which is positioned as one of the most attractive solutions in the convergence of a closer integration with the terrestrial mobile networks for a cost-effective delivery of point-to-multipoint services. By taking into account essential aspects of a successful QoS provisioning while preserving the system power/resource constraints, the proposed adaptive multidimensional QoS-based (AMQ) packet scheduling scheme in this paper aims to effectively satisfy diverse QoS requirements and adaptively optimize the resource utilization for the satellite multimedia broadcasting. The proposed scheme is formulated via an adaptive service prioritization algorithm and an adaptive resource allocation algorithm. By taking into account essential performance criteria, the former is capable of prioritizing contending flows based on the QoS preferences and performance dynamics, while the latter allocates the resources, in an adaptive manner, according to the current QoS satisfaction degree of each session. Simulation results show that the AMQ scheme achieves significantly better performance than those of existing schemes on multiple performance metrics, e.g. delay, throughput, channel utilization and fairness. Copyright © 2008 John Wiley & Sons, Ltd. [source] Modelling the distribution of badgers Meles meles: comparing predictions from field-based and remotely derived habitat dataMAMMAL REVIEW, Issue 1 2007GERALDINE NEWTON-CROSS ABSTRACT 1Environmental heterogeneity is important in determining the distribution and abundance of organisms at various spatial scales. The ability to understand and predict distribution patterns is important for solving many management problems in conservation biology and wildlife epidemiology. 2The badger Meles meles is a highly adaptable, medium-sized carnivore, distributed throughout temperate Eurasia, which shows a wide diversity of social and spatial organization. Within Britain, badgers are not only legally protected, but they also serve as a wildlife host for bovine tuberculosis Mycobacterium bovis. An evaluation of the role of badgers in the dynamics of this infection depends on understanding the responses of badgers to the environment at different spatial scales. 3The use of digital data to provide information on habitats for distribution models is becoming common. Digital data are increasingly accessible and are generally cheaper than field surveys. There has been little research, however, to compare the accuracy of models based on field-derived and remotely derived data. 4In this paper, we make quantified comparisons between large-scale presence/absence models for badgers in Britain, based on field-surveyed habitat data and remotely derived digital data, comprising elevation, geology and soil. 5We developed four models: 1980s badger survey data using field-based and digital data, and 1990s badger survey data using field-based and digital data. We divided each of the four datasets into two subsets and used one subset for training (developing) the model and the other for testing it. 6All four training models had classification accuracies in excess of 69%. The models generated from digital data were slightly more accurate than those generated from field-derived habitat data. 7The high classificatory ability of the digital-based models suggests that the use of digital data may overcome many of the problems associated with field data in wildlife-habitat modelling, such as cost and restricted geographical coverage, without any significant impact on model performance for some species. The more widespread use of digital data in wildlife-habitat models should enhance their accuracy, repeatability and applicability and make them better-suited as tools to aid policy- and decision-making processes. [source] DNA barcoding Central Asian butterflies: increasing geographical dimension does not significantly reduce the success of species identificationMOLECULAR ECOLOGY RESOURCES, Issue 5 2009VLADIMIR A LUKHTANOV Abstract DNA barcoding employs short, standardized gene regions (5' segment of mitochondrial cytochrome oxidase subunit I for animals) as an internal tag to enable species identification. Prior studies have indicated that it performs this task well, because interspecific variation at cytochrome oxidase subunit I is typically much greater than intraspecific variation. However, most previous studies have focused on local faunas only, and critics have suggested two reasons why barcoding should be less effective in species identification when the geographical coverage is expanded. They suggested that many recently diverged taxa will be excluded from local analyses because they are allopatric. Second, intraspecific variation may be seriously underestimated by local studies, because geographical variation in the barcode region is not considered. In this paper, we analyse how adding a geographical dimension affects barcode resolution, examining 353 butterfly species from Central Asia. Despite predictions, we found that geographically separated and recently diverged allopatric species did not show, on average, less sequence differentiation than recently diverged sympatric taxa. Although expanded geographical coverage did substantially increase intraspecific variation reducing the barcoding gap between species, this did not decrease species identification using neighbour-joining clustering. The inclusion of additional populations increased the number of paraphyletic entities, but did not impede species-level identification, because paraphyletic species were separated from their monophyletic relatives by substantial sequence divergence. Thus, this study demonstrates that DNA barcoding remains an effective identification tool even when taxa are sampled from a large geographical area. [source] | |||||||||||||