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61.
This article assesses the social and political significance of the international farmers’ movement, La Vía Campesina by exploring how it has evolved since its inception in 1993. It explores the movement's accomplishments and the tensions that exist between international expansion and a commitment to represent the local interests of member organizations. 相似文献
62.
Temporal variation of insect communities in urban environments is poorly known and mechanisms driving these changes are unclear,
as are the implications for insectivorous predators. We examined the relationships between season and nocturnal aerial insect
biomass and biodiversity, and between temperature and insect biomass in the Adelaide zoological gardens from December 2005
to September 2006. We also compared the effectiveness of two insect trap types and used a bat detector to assess bat activity
in relation to insect biomass. During the study, 9,939 insects from 13 orders were collected at the Adelaide zoo with a Malaise
trap and a light trap. Mass and diversity of insects were highest during warm months, as was bat activity, and bat activity
was positively correlated with insect biomass. Winter-active insects consisted predominantly of Diptera and Lepidoptera, which
may provide an important winter food resource for insectivorous bats. The Malaise trap attracted fewer insect orders and biomass
than did the light trap, and insects congregated within 6 m of artificial lights, so bats that forage at lights may have an
advantage in urban areas. A strong need for the inclusion of urban insects to biodiversity inventories exists in the context
of bat conservation. 相似文献
63.
Kimberly P. Brackett Ann Marcus Nelya J. McKenzie Larry C. Mullins Zongli Tang Annette M. Allen 《The Social Science Journal》2006,43(3):437-444
This paper compares the differing perceptions of racism reported by White (n = 222), Black (n = 99), and White–Black multiracial (n = 45) students at an urban campus of a Southern university. Using one-way analysis of variance (ANOVA), we examine the differences between the racial groups in three campus contexts—campus in general, with instructors, and with other students. Items chosen for analysis included behaviors or actions experienced by at least 4% of the respondents. In nearly all areas, the multiracial student group reported the most experience with prejudice. We employ standpoint theory to discuss these findings. 相似文献
64.
Dermal absorption experiments form an important component in the assessment of risk from exposure to pesticides and other substances. Much dermal absorption data is gathered in rat experiments carried out using a certain standard protocol. Uncertainties in these data arise from many sources and can be quite large. For example, measurements of the systemic absorption of hexaconazole differed by more than an order of magnitude within a single experiment. Two diniconazole studies produced quite different results, due to minor differences in protocol and in chemical formulation. Limits of detection can also prevent accurate measurement when the amounts absorbed are small. These examples illustrate the need for measuring and reporting uncertainties in estimates that are based on these data. The most direct way to estimate uncertainty is to compute the sample standard deviations of replicate measurements. By pooling these estimates across dose and duration groups for which they are similar, the number of degrees of freedom is increased, and more precise confidence intervals can be obtained. In particular, the ratio of upper to lower 95% confidence limits was reduced by as much as ten-fold for hexaconazole, seven-fold for uniconazole, and nearly four-fold for propiconazole. 相似文献
65.
66.
Using case study evidence of a local authority and a building society this article explores the gendered implications of corporate value change programmes and how these are mediated by the types of equality agendas in place at the organizational level. The article explores the gendered impact of new corporate values by identifying how the organizations' changing approach to selection and career development has unintended gendered consequences, affecting different groups in the organization depending on the specific department they are working in and their seniority. As the two organizations follow different equality agendas the data allow us to show the ways in which specific approaches to equality in organizations both shape and are shaped by corporate value change programmes. It is argued that corporate value change programmes have uneven gendered implications, depending on the specific context in which they are introduced and in particular, the ways in which managers and employees make sense of these by both rejecting and reinforcing existing equality agendas already in place. 相似文献
67.
68.
This ethnographic study examined women's friendships in Red Hat Society (RHS) chapters. Qualitative data included in-depth interviews (n = 25), a focus group interview (n = 7), participant observation, and examination of RHS publications. Results suggest that participation in the RHS (1) aids in developing and enhancing positive attitudes about self and aging that contribute to overall well-being, (2) offers the opportunity to obtain instrumental and emotional support, and (3) provides social connections that prevent feelings of social isolation. Collectively, these findings highlight the potential buffering role of RHS participation in women's lives. 相似文献
69.
70.
Christopher Bellonci Jonathan C. Huefner Annette K. Griffith Georgi Vogel-Rosen Gail L. Smith Scott Preston 《Children and youth services review》2013,35(10):1773-1779
Over the past decade, the level of clinical needs of youth in residential treatment has increased significantly. Youth in out-of-home settings typically experience higher levels of psychotropic medication use than their peers living at home, even when controlling for the severity of clinical issues. The purpose of the current study was to examine the effects of an approach to clinically reassess psychotropic medication utilization for youth residing in residential treatment settings while also observing the impact on the youth's need for physical containment. Medication changes were based on a data-informed process, using input from a multi-disciplinary treatment team. Data for 531 youth who were consecutively admitted to one of two non-affiliated intensive residential treatment programs, one in the Midwest and one in New England, was analyzed. Over half of these youth (n = 292, 55%) had their medications reduced during their stay and only 14% (n = 76) were prescribed more medication at discharge than they had been taking at admission. The remainder either saw no change during their stay (n = 104, 20%) or were never on medication at any time (n = 59, 11%). From admission to discharge there was a 62% decrease in the number of assaultive incidents as well as a 72% decrease in the use of physical restraints. These results support the view that residential treatment can provide a treatment milieu that allows for thoughtful reassessment of the clinical basis for behavioral disorders in children that can achieve the dual goals of medication reduction and behavioral stabilization. 相似文献