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Bees are important flower-visiting insects that display differential occurrences at food resources throughout urban and wildland landscapes. This study examined the visitation rates and foraging patterns of eight taxonomic groups of bees that are common to California poppies, Eschscholzia californica, in both landscape types. Bee occurrence was documented in relation to floral resource characteristics (patch area, poppy coverage, and poppy density), local landscape characteristics (distance to the wildland-urban interface, distance to riparian areas, distance to green space, and land use), and regional landscape context (urban versus wildland). Similar abundance and richness measures were recorded at both urban and wildland poppy patches, but community composition varied in each landscape. Bumble bees were more abundant at poppies in the wildland whereas species in the family Halictidae (sweat bees) were more abundant at poppies within the urban landscape. Resource patch size and density consistently correlated with increased bee presence for all bee types foraging in the wildland. Individual patterns of occurrence in the urban landscape were somewhat divergent; the foraging dynamics of larger bodied-bees (Bombus vosnesenskii and Megachile species) correlated significantly with resource patch size and density, whereas smaller-bodied bees (family Halictidae and Andrena species) were influenced by landscape characteristics such as distance to the wildland-urban interface and distance to riparian areas. In summary, the surrounding landscape had an influence on community composition, but the magnitude of the floral resource present at a site and factors relating to foraging energetics were dominant drivers of local occurrence. These results suggest that management strategies that provide dense and abundant floral resources should be successful in attracting bees, irrespective of their location within the urban matrix.  相似文献   
113.
Joe Moran 《Cultural Studies》2013,27(6):552-573
The starting point for this article is the passage on ‘The Juke-Box Boys’ in Richard Hoggart's The Uses of Literacy. This passage is often cited as evidence of Hoggart's residual, Leavisite suspicion of mass culture and his nostalgia for more ‘authentic’ working-class culture. This article moves beyond this critique by discussing Hoggart's account in relation to the broader historical shifts signalled by the development of milk and coffee bars in postwar Britain, and their more recent replacement by corporate fast-food and coffee chains. It argues that Hoggart's critique was not simply a knee-jerk fear of the new; it fed into more widespread anxieties which long predate the media invention of the ‘teenager’ or the emergence of organized youth subcultures. These anxieties were not simply about mass culture and Americanization, but also about cultural literacy, class, the relationship between the public and private sphere, and the losses and gains of rising affluence – concerns that have been increasingly submerged in post-Thatcherite political culture.  相似文献   
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This article argues that in many markets, quantity is demand determined in the short run but price is supply determined, and that the dynamic restrictions between price and quantity implied by the model have been widely neglected in empirical research. Two examples illustrate our point—the demand and supply relationships between inflation and unemployment and between the terms of trade and the trade balance. In both, specifying quantity as a function of lagged prices in demand and price as a function of lagged quantities in supply (rather than concentrating on exogenous shift determinants) is sufficient to separate demand and supply.  相似文献   
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The red state-blue state characterization of American society geographically categorizes the U.S. into Republican and Democrat states, with the assumption that the gulf between the states is broad and deep in many issues and policies. Given this presumed division, this research examines three dimensions of environmentalism to determine if political party identification is indeed a useful predictor of environmentalism when taking into consideration a person's place of residence and several other social demographic influences. Data come from a 2003 phone survey of 606 residents in Nebraska. Nebraska provides a good test of how much political party identification matters in understanding environmentalism when the population is generally conservative, with traditional ties to extractive commodity production. The findings show that political party identification is significant in understanding environmentalism and that place of residence does not affect environmentalism. However, while the findings reveal that political party identification is an important predictor of environmentalism, both Republicans and Democrats show a relatively strong support for the environment.  相似文献   
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Community gardens vary enormously in what they offer, according to local needs and circumstance. This article reports on research and experience from the USA. The context in which these findings are discussed is the implementation of Local Agenda 21 and sustainable development policies. In particular, emphasis is given to exploring the social dimension of sustainable development policies by linking issues of health, education, community development and food security with the use of green space in towns and cities. The article concludes that the use of urban open spaces for parks and gardens is closely associated with environmental justice and equity.  相似文献   
119.
The Analysis of Verbal Behavior - In the fall of 2003, the authors corresponded on the topic of private events on the listserv of the Verbal Behavior Special Interest Group. Extracts from that...  相似文献   
120.
This paper explores the role of Chinese financial institutions in the corporate governance of listed companies through interviews with both senior managers of financial institutions and board directors of listed companies. Our results show that, while most securities companies are passive investors, a good proportion of the active mutual funds help their portfolio companies prepare financial forecasts, standardize their operations, raise external funds, strengthen their company image in the capital markets, and sometimes intervene in corporate issues. This limited role can be attributed to a number of factors specific to the Chinese context including highly concentrated state ownership, an immature regulatory environment, inadequate transparency and disclosure of financial information, and weak corporate governance within financial institutions themselves. It could also be affected by several other factors that are considered to cause institutional passivity in developed countries such as conflicts of interest, monitoring costs and lack of expertise.  相似文献   
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