7,865 research outputs found

    Playing in the Doll\u27s House of Revolution : White Students and Activists Involved in the Black Power Movement

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    When Stokey Charmichael first uttered the words “black power” to a crowd of civil rights supporters during the “March Against Fear” on June 16th, 1966, it marked an important – and disillusioning – moment for white students and activists involved in the movement, a shift from a civil rights struggle fought not only through nonviolent methods but also through coalitions between whites and blacks. In the years that followed, many of these white activists struggled to find a place in the burgeoning black power movement that often shunned them and the more pacifist approach to rights struggles associated with them. Many dropped out of the movement following this shift, or transferred their energies to other causes; others, however, found themselves involved in Black Power organizations such as the Black Panthers, or supporting their activities despite qualms about their policies and often-violent actions. The question thus must be asked: why did many whites join and support a movement that often excluded or devalued them as a matter of policy? This paper explores the complex social and psychological reasons behind many of these activists’ support for Black Power – as well as the implications of their involvement for race relations to this day

    Valuing conservation benefits of an offshore marine protected area

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    Increasing anthropogenic pressure in the offshore marine environment highlights the need for improved management and conservation of offshore ecosystems. This study scrutinises the applicability of a discrete choice experiment to value the expected benefits arising from the conservation of an offshore sandbank in UK waters. The valuation scenario refers to the UK part of the Dogger Bank, in the southern North Sea, and is based on real-world management options for fisheries, wind farms and marine protection currently under discussion for the site. It is assessed to what extent the general public perceive and value conservation benefits arising from an offshore marine protected area. The survey reveals support for marine conservation measures despite the general public's limited prior knowledge of current marine planning. Results further show significant values for an increase in species diversity, the protection of certain charismatic species and a restriction in the spread of invasive species across the site. Implications for policy and management with respect to commercial fishing, wind farm construction and nature conservation are discussed

    Deflection and frequency monitoring of the Forth Road Bridge, Scotland, by GPS

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    Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees. Copyright © 2012 Thomas Telford Ltd.The use of carrier phase kinematic GPS (global positioning system) has evolved into a reliable technique to measure both the three-dimensional magnitudes and frequencies of movements of structures. Techniques have been developed that tackle errors caused by multipath, tropospheric delay and issues relating to satellite geometry. GPS-derived movements compare well with data from both design predictions and structural models. Results from field trials carried out on the Forth Road Bridge are presented. This paper brings together key results that outline the procedure as well as a series of new data that indicate other potential applications. GPS data were collected continuously over a period of 46 h at a minimum rate of 10 Hz. During the trials wind speed, wind direction, relative humidity and temperature were also recorded. Frequently there was very heavy traffic flow, and at one point a special load (a 100-t lorry) passed over simultaneously to the heavy daytime flow of traffic. Data from a planned load trial during a brief bridge closure are reported and compared with the limited results available from a finite element model. Measured vibration frequencies are also computed from GPS data and compared with those given in the literature. In addition, results indicating the change in structural characteristics are also presented – in particular changes of mass associated with changes in traffic loading are observed. The results show the performance of GPS as it has developed in recent years, and that it can now reliably be used as a significant part of structural health monitoring schemes, giving both the magnitude of quasi-static deflections in known time periods and hence the frequency of dynamic movements of structures.Forth Estuary Transport Authorit
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