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81.
X-ray fluorescence analysis of obsidian artifacts from sites located in Chaco Canyon and from three Chaco-era communities in New Mexico permits determination of their geological origin. These source data are used to describe patterning in obsidian procurement in sites located in Chaco Canyon dating from A.D. 500–1150, and in a three non-Canyon communities occupied during the period of Chaco Canyon's regional prominence (ca. A.D. 875–1150). These data demonstrate that the most proximate sources generally dominate the sourced obsidian assemblages from sites of all periods, but also suggest differences in procurement patterning both over time and across space. Within Chaco Canyon, there is a notable shift from Mount Taylor obsidian to use of Jemez Mountains sources over time. These data also suggest that earlier analyses of obsidian from sites in Chaco Canyon misidentified some obsidian artifact sources; these new data indicate the central areas of disagreement and provide a revision of procurement patterning. In the Chaco-era communities located outside Chaco Canyon, procurement patterning diverges. The Blue J community shows an increase in use of the nearby Mount Taylor source over time. Two communities located toward the southern extent of the Chaco great house distribution reveal a markedly distinct procurement pattern, obtaining nearly all of their obsidian from southern sources largely unrepresented at Chaco Canyon. Combined, these data provide new insights into raw material procurement and artifact production at sites in Chaco Canyon, and in communities occupied during the Chaco Phenomenon, the period of the Canyon's greatest regional influence.  相似文献   
82.
Field trips have long been central to geography, but have been subject to assessment of the role of the ‘field’ in teaching. At the same time, academics face barriers to running field trips. Distance education and enhanced educational access for non-metropolitan students represented such an obstacle at an Australian university. These obstacles were taken as an opportunity to draw on the regional nature of the students and staff to enhance teaching goals, run critically informed field trips by and manage academic workloads. We evaluate the field trips by conducting surveys and interviews with students and tutors, and as an example of innovation within constraints.  相似文献   
83.
The elemental fluxes and heat flow associated with large aquifer systems can be significant both at local and at regional scales. In fact, large amounts of heat transported by regional groundwater flow can affect the subsurface thermal regime, and the amount of matter discharged towards the surface by large spring systems can be significant relative to the elemental fluxes of surface waters. The Narni‐Amelia regional aquifer system (Central Italy) discharges more than 13 m3 sec?1 of groundwater characterised by a slight thermal anomaly, high salinity and high pCO2. During circulation in the regional aquifer, groundwater reacts with the host rocks (dolostones, limestones and evaporites) and mixes with deep CO2‐rich fluids of mantle origin. These processes transfer large amounts of dissolved substances, in particular carbon dioxide, and a considerable amount of heat towards the surface. Because practically all the water circulating in the Narni‐Amelia system is discharged by few large springs (Stifone‐Montoro), the mass and energy balance of these springs can give a good estimation of the mass and heat transported from the entire system towards the surface. By means of a detailed mass and balance of the aquifer and considering the soil CO2 fluxes measured from the main gas emission of the region, we computed a total CO2 discharge of about 7.8 × 109 mol a?1 for the whole Narni‐Amelia system. Finally, considering the enthalpy difference between infiltrating water and water discharged by the springs, we computed an advective heat transfer related to groundwater flow of 410 ± 50 MW.  相似文献   
84.
李庚 《人文地理》2012,26(1):102-106
以西安市长安区、渭南市澄城县、宝鸡市岐山县为考察点,采用问卷调查法和SPSS软件对三县土地流转现状进行实证分析,以查明不同区域土地流转差异情况和造成土地流转差异的影响因素。结果表明,由于经济发展水平不同,三县区土地流转达成比例相差较大,流转规模、流转方式有很大不同,流转价格更是有较大差别,经济发达地区有较强的土地"非粮化"现象,土地流转更接近市场行为。非农收入水平、农户的受教育程度、各类土地流转中介和管理机构的完善程度、农户的社会保障程度等对土地流转有显著影响,且影响方式均为正向,并且对流出率的影响超过对流入率的影响。  相似文献   
85.
The geographical literature on place interrogates, amongst other notions, sense of place, place identity, and their connections or disruptions. Although notions of place are multiple and very fluid, place transformation in rural and regional areas may be more rapid than the changing understandings of place held by residents. This research examines notions of place held by residents on the Sunshine Coast of Australia, one of the fastest growing ‘sea change’ regions in the nation. It presents a reading of empirical material that suggests sense of place and place-identity cannot be easily equated in the region. Sense of place was more important to rural and long-term residents than was the place-identity. Landscape change in the region is narrated, and images of place-identity interpreted, to suggest that place-identity has been created and imposed by the globalising forces of development, rather than emanating from many resident's perspectives. Those local voices have been, and continue to be, successively displaced and disrupted. Thus discursive power in various ways shapes and is shaped by dominant place-identity in the region, and some voices are blocked by the discourses of urbanisation. The unequal geographies of power shaping the regional landscape need to be acknowledged within place transformation processes. These geographies of power suggest that sense of place can be thought of as a ‘view from the bottom’, while place-identity primarily functions as a ‘view from the top’.  相似文献   
86.
One of the leading Western observers of Ukrainian affairs, before and after the dis-integration of the Soviet Union, discusses the preceding paper by Anders Åslund devoted to the economic policies of Ukraine after the Orange Revolution. The commentary covers in some detail the pervasive corruption, largely traced to Ukrainian oligarchs but also endemic in the administration and among the military. Relatively recent 2005 polls are cited to illustrate the citizenry's support for some of the government's policies and regulations pertaining to prices, privatization, and organized crime, as well as those showing presidential and ministerial approval ratings. Journal of Economic Literature, Classification Numbers: H10, H80, O52, P30. 16 references.  相似文献   
87.
A U.S.-based economic geographer and observer of China's economy examines the rapid expansion of the country's largely overlooked service sector, at both the national and regional levels. A particular focus of the author's research is on identifying regional variations in the development of services within the country and exploring some of the more important contributing factors. Based on the findings, the paper also discusses structural shifts that occurred in China's regional economies, disclosing inter alia that inequality in the contribution of services to GDP did not follow the same trajectory as that of employment in services. Journal of Economic Literature, Classification Numbers: L800, O180, P230. 6 figures, 4 tables, 82 references.  相似文献   
88.
Two prominent U.S. geographers outline the framework and mandate of an emerging new regional geography as a tool for understanding rapid and profound changes in the contemporary world. In so doing, they differentiate this new approach to the geographic study of regions from both (a) the traditional practice of regional geography prevailing in the discipline from the mid-19th century and (b) accounts of geography's role in contemporary affairs offered by non-specialists in the mass media (e.g., Kaplan's "revenge of geography"). The authors provide recommendations for, and note the benefits of, a strengthening of regional research and training in geography, while mapping out an expanded role for Eurasian Geography and Economics in disseminating new regional research whose scope extends beyond disciplinary boundaries to embrace current public and political debate. Journal of Economic Literature, Classification Numbers: O100, O180, P000, R110.60 references.  相似文献   
89.
A team of Western and CIS agricultural economists presents the results of a cross-national survey of 916 dairy farms located in Armenia, Moldova, and Ukraine. The focus on milk marketing and supply chain relationships reflects their importance as determinants of farmers' welfare. Survey findings cover herd sizes, milk yields, investment activities, prices, sales to processors, and relationships with and support from buyers. An analysis of farmer satisfaction based on use of an ordered probit model, highlights the significance of trust and support measures. Journal of Economic Literature, Classification Numbers: O18, P32, Q13. 8 tables, 37 references.  相似文献   
90.
In this paper, we look at what it means to ‘eat Hawai'i’ and examine how Hawai'i Regional Cuisine (HRC) imagines, produces, and consumes place through particular constructions of local foods. The term ‘local’ attaches to foods as a marker of numerous positive attributes such as seasonal, sustainable, and community-based. Drawing upon ongoing ethnographic research on Hawai'i Island, we examine spatial and discursive constructions of local and how this particular cuisine places itself in local food networks while simultaneously using place to localize itself within the Island's food networks. Using a case study approach to carefully contextualize localness, we show how Merriman's Restaurant and HRC complicate notions of alternative and local food systems in its discursive and material production and reproduction of Local food and locally grown food.  相似文献   
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