Advanced detectors and signal processing

Continued progress is reported toward development of a silicon on garnet technology which would allow fabrication of advanced detection and signal processing circuits on bubble memories. The first integrated detectors and propagation patterns have been designed and incorporated on a new mask set. In addition, annealing studies on spacer layers are performed. Based on those studies, a new double layer spacer is proposed which should reduce contamination of the silicon originating in the substrate. Finally, the magnetic sensitivity of uncontaminated detectors from the last lot of wafers is measured. The measured sensitivity is lower than anticipated but still higher than present magnetoresistive detectors

Is international agricultural research a global public good? : The case of rice biofortification

The status of international agricultural research as a global public good (GPG) has been widely accepted since the Green Revolution of the 1960s and 1970s. While the term was not used at the time of its creation, the Consultative Group on International Agricultural Research (CGIAR) system that evolved at that time has been described as a 'prime example of the promise, performance and perils of an international approach to providing GPGs'. Contemporary literature on international agricultural research as a GPG tends to support this view and focuses on how to operationalize the concept. This paper adopts a different starting point and questions this conceptualization of the CGIAR and its outputs. It questions the appropriateness of such a 'neutral' concept to a system born of the imperatives of Cold War geopolitics, and shaped by a history of attempts to secure its relevance in a changing world. This paper draws on a multi-sited, ethnographic study of a research effort highlighted by the CGIAR as an exemplar of GPG-oriented research. Behind the ubiquitous language of GPGs, 'partnership' and 'consensus', however, new forms of exclusion and restriction are emerging within everyday practice, reproducing North-South inequalities and undermining the ability of these programmes to respond to the needs of projected beneficiaries

Quantitative Observation of Magnetic Flux Distribution in New Magnetic Films for Future High Density Recording Media

International audienceOff-axis electron holography was used to observe and quantify the magnetic microstructure of a perpendicular magnetic anisotropic (PMA) recording media. Thin foils of PMA materials exhibit an interesting up and down domain configuration. These domains are found to be very stable and were observed at the same time with their stray field, closing magnetic flux in the vacuum. The magnetic moment can thus be determined locally in a volume as small as few tens of cubic nanometers

Two nations underground: building schools to survive nuclear war and desegregation in the 1960s

In the 1960s federal agencies in the United States encouraged the building of protected schools designed to survive a nuclear attack. A number of designs, including underground schools, were constructed. In order to promote the building of protected schools, the US government produced a number of propaganda films for school boards and governors. In addition to promoting post-nuclear survival, these films considered that protected schools were beneficial in terms of progressive and child-centred education and sometimes racial assimilation. This paper considers the extent to which securitisation and progressive education found a common purpose at this time and considers the implications of this for race equality. The data is based upon rare, archival film from the US National Archives in College Park, Maryland on school protection during the Cold War. These films, intended for wider public consumption were intended as promotional shorts for schools boards and other decision makers to show the advantages of adding fallout protection to school design. The method involved an archival search to scope the range of films produced at this time. Each film was viewed multiple times at the archive to transcribe text and image descriptions. This dual data was then used to form a narrative account of the argument structure of the films to identify the ways in which interest convergences and divergences around ‘race’ are deployed. The discussion uses conceptions of ‘flexible whiteness’ to examine how securitisation, a discourse identified with white hegemony, can additionally contain conceptions of race equality and progressivism