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81.
Novel approaches to natural resource management, particularly those which promote stakeholder participation, have been put forward as fundamental ingredients for establishing resilient, polycentric forms of environmental governance. This is nowhere more pertinent than in the case of the complex adaptive systems associated with urban areas. Decentralisation of urban green space management has been posited as an element thereof which, according to resilience thinking, should contribute to the adaptive capacity of cities and the ecosystem services upon which they rely. Implicit in this move towards increased adaptive capacity is the ability to manage through innovation. Although the importance of innovation towards system adaptability has been acknowledged, little work has thus far been carried out which demonstrates that innovative use of urban green space represents a form of adaptive response to environmental conditions. The current paper reports on research which maps examples of organised social-ecological innovation (OSEI) in an urban study area and evaluates them as adaptive responses to local environmental conditions which may contribute to system resilience. The results present OSEI as a coherent body of responses to local social and environmental deprivation, exhibiting diversity and adaptability according to individual contexts. The study therefore provides evidence for the importance of local stakeholder-led innovation as in the building of adaptive capacity in urban social-ecological systems. 相似文献
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83.
This paper uses factor analysis to analyze Californians’ voting on 12 propositions considered during the 2008 general election. The result is to create quantitative representations of shared mental models. After generating two county-level shared mental model indices, the indices are further examined to explain their variation across counties and to evaluated their performance as substitutes for previous presidential voting as an independent variable in a presidential voting model. 相似文献
84.
Jenny Shaw 《Slavery & abolition》2018,39(2):290-314
A central debate within slavery studies centers on the question of whether enslaved Africans ‘retained’ their cultures or became ‘creolized’ in the Americas. Focusing on two enslaved women and the six children they bore by their master in late seventeenth-century Barbados, this paper suggests how creolization operated in the early modern English Caribbean. The women and children were baptized and provided for in their master’s will. Yet they were also part of the plantation’s 180 strong West African enslaved population. Contextualizing all of the influences that shaped their experiences on Barbados, this paper examines naming, baptism, and birthing rituals to provide an account of the women’s lives that does not privilege either European or West African cultural practices. It argues that creolization was not a marker of identity, nor a unidirectional process of Europeanization, but rather a multivalent and multidirectional negotiation of cultural exchanges. 相似文献
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86.
This study explored emerging and young adults’ reasoning about cultural practices in West Africa. American (Study 1, n = 78, M = 20.76 years) and Beninese (Study 2, n = 93, M = 23.61 years) undergraduates were surveyed about their evaluations of corporal punishment, scarification, and schooling restrictions in conditions where the practices had gender‐neutral or gender‐specified targets. In Study 1, the majority (69%) of American participants negatively evaluated the practices, especially when targets were female. However, the majority (73%) assumed the cultural practices were consensual. In Study 2, the majority (76%) of Beninese participants negatively evaluated the practices, and their evaluations did not vary by gender of the target. Few (10%) Beninese participants assumed the cultural practices were consensual. In both studies, emerging and young adults who initially judged practices positively changed their evaluations with a change in consent. 相似文献
87.
The Value of Information in Decision‐Analytic Modeling for Malaria Vector Control in East Africa
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Dohyeong Kim Zachary Brown Richard Anderson Clifford Mutero Marie Lynn Miranda Jonathan Wiener Randall Kramer 《Risk analysis》2017,37(2):231-244
Decision analysis tools and mathematical modeling are increasingly emphasized in malaria control programs worldwide to improve resource allocation and address ongoing challenges with sustainability. However, such tools require substantial scientific evidence, which is costly to acquire. The value of information (VOI) has been proposed as a metric for gauging the value of reduced model uncertainty. We apply this concept to an evidenced‐based Malaria Decision Analysis Support Tool (MDAST) designed for application in East Africa. In developing MDAST, substantial gaps in the scientific evidence base were identified regarding insecticide resistance in malaria vector control and the effectiveness of alternative mosquito control approaches, including larviciding. We identify four entomological parameters in the model (two for insecticide resistance and two for larviciding) that involve high levels of uncertainty and to which outputs in MDAST are sensitive. We estimate and compare a VOI for combinations of these parameters in evaluating three policy alternatives relative to a status quo policy. We find having perfect information on the uncertain parameters could improve program net benefits by up to 5–21%, with the highest VOI associated with jointly eliminating uncertainty about reproductive speed of malaria‐transmitting mosquitoes and initial efficacy of larviciding at reducing the emergence of new adult mosquitoes. Future research on parameter uncertainty in decision analysis of malaria control policy should investigate the VOI with respect to other aspects of malaria transmission (such as antimalarial resistance), the costs of reducing uncertainty in these parameters, and the extent to which imperfect information about these parameters can improve payoffs. 相似文献
88.
理查德·泰勒 《北京邮电大学学报(社会科学版)》2009,11(2):14-22
本文概述了当前美国有线电视行业/付费视频行业的局势,以及一些重要问题和面临的挑战,展望了未来的视频市场,概述了一个未来视频/宽带市场的战略愿景,然后回归到政策建议及具体的立法和管制行动。这将帮助我们在最短的、可操作的时间内通向一个开放的、非歧视性的、无处不在的宽带网络。 相似文献
89.
Abstract Control balance theory has been previously tested using measures of contingencies. This article builds upon these studies by using data collected from 460 undergraduate students to examine the role of constraints and sensation-seeking in the control balancing process. The findings provide partial support for control balance theory (i.e., that the control deficit and the control surplus both have significant links to predation). Examining the contingency effects showed that the influence of the control deficits and surpluses on deviance was conditioned by contingencies (i.e., high levels of sensation-seeking and low levels of constraint). The findings from this study suggest the need for further exploration of control balance theory, with the focus to shift to Tittle's 2004 revision of the theory. 相似文献
90.
Richard E. Lund 《统计学通讯:理论与方法》2013,42(20):2287-2296
Plans for implementing nested cube designs invoiving 3 to 5 factors within moderate sized blocks are eveloped. Fractionsc of 1/2 and 1/4 replicates of components of the generic design are used. Suggestions for data analysis are offered. 相似文献