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71.
Felipe Gonzalez‐Penagos Isabelle Moretti Christian France‐Lanord Xavier Guichet 《Geofluids》2014,14(4):443-458
Wells located in the Colombian Andean foreland often produce biodegraded hydrocarbons and relatively fresh water (total dissolved solids concentrations of 2000 mg l?1 dominate across most of the basin). The ratio of water to hydrocarbon in the produced fluids is high and has often been interpreted by explorationists and simulation engineers as being due to massive meteoric water invasion. To challenge this hypothesis, previously published and existing data are compiled here, along with 68 new water samples collected from both the surface (rivers) and subsurface (production wells), which are analyzed for major elements, salinity, and stable isotope compositions. The data indicate a mixed origin for the water, which involves formation water, meteoric water, and a third source that we interpret as being related to diagenetic processes (such as clay dehydration). Analyses of the variation of the parameters from north to south and west to east allow us to define the mixtures as coming from waters of different origins and make it possible to determine the relative contribution of each source. 相似文献
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With this paper, we analyse an ordinary urban process, which has received little attention so far, and propose a new concept to take account of it: plotting urbanism. It is usually subsumed under terms like “urban informality” or “incremental urbanism” and not studied as a distinct process. In comparing Lagos, Istanbul and Shenzhen we captured four defining features of plotting urbanism: first, it unfolds in a piecemeal fashion with limited comprehensive planning. Second, it emerges from specific territorial compromises often resulting from conflicts between overlapping modes of territorial regulation, land tenure and property rights. Third, plotting is based on commodification of housing and land, which might accentuate socio-economic differentiations between property-owners, who often live in the same area, and their tenants. The term “plotting” highlights the key role of the plot in the process. It also alludes to strategic acts of collaboration for individual and collective benefit. 相似文献
75.
Robert Andrew Carter Bing Zhao Kevin Lane Christian Velde 《Arabian Archaeology and Epigraphy》2020,31(2):501-523
Julfar was a major port town of the Persian Gulf during the fourteenth and fifteenth centuries AD. A possession of the Hormuzi empire, it was a lucrative source of taxes and pearls, and a port of trade for northern Oman, tapping into maritime trading networks connecting the Middle East with Africa, India, Southeast Asia and China. The site is found north of modern Ras Al-Khaimah, UAE. Julfar Al-Nudud was previously considered to be a late suburb of an urban core, Julfar Al-Mataf, and is located on a creek opposite the latter. However, excavations in 2010 indicated that Al-Nudud was part of the original urban core, which had grown up on either side of the creek. Moreover, re-examination of previous work in Al-Mataf, where a large mosque and fortification were excavated (by British and French teams), shows that the two areas followed different trajectories. Significant occupation in Al-Nudud and southern Al-Mataf (revealed by previous Japanese excavations) ended before the start of the sixteenth century, while use of the mosque and fort in central Al-Mataf continued into the seventeenth century, albeit discontinuously. A revised concordance of the phases derived from the work of various archaeological teams is therefore proposed. 相似文献
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David M. Willumsen Christian Stecker Klaus H. Goetz 《Australian journal of political science》2019,54(1):37-64
This paper analyses how the size and socio-economic diversity of their electorate affect parliamentarians’ legislative behaviour. We study the Australian senate, which wields considerable legislative influence and is marked by large differences in the size and socio-economic makeup of the districts that senators represent. We demonstrate that as the size of their district increases, senators ask more questions and introduce more bills and amendments. By contrast, senators become less active as the diversity of their electoral district increases. The paper thus establishes that size and diversity of electorates have significant effects on legislative behaviour. 相似文献
79.
Christian Diller 《European Planning Studies》2016,24(12):2154-2174
The topics of the territorial structure of the German states and the strategic development of the metropolitan regions are at first glance two completely separate discourses. However, this paper demonstrates that the development of the metropolitan regions in Germany, supported by Federal Spatial Planning, has at least in some cases been influenced by the possibility of offering an alternative to state restructuring and that the metropolitan regions today continue to represent a basis for interstate cooperation. The in-depth observation of four cross-state metropolitan regions makes clear that different development paths have been followed. Thus, while certain metropolitan regions have distanced themselves from issues relevant to interstate cooperation, the examples of Hamburg and Berlin-Brandenburg show the value of metropolitan regions for cooperation between states and as an alternative to state restructuring. 相似文献
80.
Michelle Christian 《Tourism Geographies》2016,18(1):38-58
This paper addresses how the growth of tourism global production networks (GPNs) based in Kenya and Uganda created uneven social upgrading outcomes for workers and communities. A tourism GPN and social upgrading framework follows a global political economy approach to analyzing tourism development and labor in diverse tourism geographies. Two tourism GPNs are investigated: Mombasa, Kenya, and Murchison Falls National Park, Uganda. Four main findings emerge: (1) governance relationships between tour operator and accommodation firms directly impacted social upgrading outcomes for hotel workers and indirectly for excursion workers; (2) excursion workers and community members had precarious connections to tourism GPNs; (3) public governance and collective power were key components to social upgrading while supporting its unevenness; and (4) societal embeddedness constructions around gender and regional space influenced worker and community social upgrading potential. Social upgrading is shaped by a confluence of firm, institution, geography, and labor conditions that differentially materializes in specific tourism GPN arrangements. 相似文献