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Joseph S. Wood 《Journal of Historical Geography》1982,8(4):333-346
The long-standing correlation between community function and nucleated settlement form in early colonial New England is mistaken. Puritan communities were established, but new communities—often called villages in colonial records—were developed and survived quite well regardless of settlement form. As in England at the time, village meant community and community was a social web. Village status in New England provided a community with land and thus enabled the community to undertake settlement. But the social web that comprised community did not require nucleated settlement, and the dispersed settlement form that many colonists had known in England dominated the village landscape of early colonial New England. 相似文献
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Ray C. Rist 《政策研究杂志》1982,10(3):522-538
There is a pressing need in the United States to develop effective programs that address youth unemployment and the transition from school to work. Based on work at 47 sites in 31 states, this paper reports on a policy evaluation strategy that heavily relied on qualitative research. On-site observers at each of these sites focused on key issues of program implementation, linkages to other agencies and organizations serving youth, and on the effectiveness of different program strategies for different target populations. The utility of qualitative analysis for in-depth assessments of these programs is stressed. 相似文献
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Surface controls on the characteristics of natural CO2 seeps: implications for engineered CO2 stores 下载免费PDF全文
CO2 injected into rock formations for deep geological storage must not leak to surface, since this would be economically and environmentally unfavourable, and could present a human health hazard. In Italy natural CO2 degassing to the surface via seeps is widespread, providing an insight into the various styles of subsurface ‘plumbing’ as well as surface expression of CO2 fluids. Here we investigate surface controls on the distribution of CO2 seep characteristics (type, flux and temperature) using a large geographical and historical data set. When the locations of documented seeps are compared to a synthetic statistically random data set, we find that the nature of the CO2 seeps is most strongly governed by the flow properties of the outcropping rocks, and local topography. Where low‐permeability rocks outcrop, numerous dry seeps occur and have a range of fluxes. Aqueous fluid flow will be limited in these low‐permeability rocks, and so relative permeability effects may enable preferential CO2 flow. CO2 vents typically occur along faults in rocks that are located above the water table or are low permeability. Diffuse seeps develop where CO2 (laterally supplied by these faults) emerges from the vadose zone and where CO2 degassing from groundwater follows a different flow path due to flow differences for water and CO2 gas. Bubbling water seeps (characterized by water bubbling with CO2) arise where CO2 supply enters the phreatic zone or an aquifer. CO2‐rich springs often emerge where valleys erode into CO2 aquifers, and these are typically high flux seeps. Seep type is known to influence human health risk at CO2 seeps in Italy, as well as the topography surrounding the seep which affects the rate of gas dispersion by wind. Identifying the physical controls on potential seep locations and seep type above engineered CO2 storage operations is therefore crucial to targeted site monitoring strategy and risk assessment. The surface geology and topography above a CO2 store must therefore be characterized in order to design the most effective monitoring strategy. 相似文献
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Leah Sarson Val Muzik Brandon Ray Glenn Gambrell Leehi Yona Robert Comeau 《The American review of Canadian studies》2019,49(1):105-122
This article draws on the perspectives of students and organizers involved in recent iterations of the Model Arctic Council (MAC), an experiential learning simulation designed to expand students’ knowledge and understanding of the Arctic and its governance. While much of the discourse related to simulations such as the MAC emphasizes its pedagogical and networking benefits, this article leverages participant-based ethnography to argue that the MAC also affects multi-track diplomatic outcomes in addition to serving as a site for diplomatic engagement. Applying an interpretive approach driven by the onset of practice-tracing in international relations, we demonstrate that the MAC both produces and constitutes diplomacy. Such a reimagination elevates the diplomacy of non-state actors and exposes false binaries between state diplomacy and non-state diplomacy. 相似文献
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Ian Wood 《Early Medieval Europe》2020,28(1):154-157
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