Cost-benefit analysis of Australian Federal Police counter-terrorism operations at Australian airports

The terrorist attacks of 11 September 2001 highlighted the vulnerabilities of airports and aircraft. Further attacks in 2002, 2007 and 2009, have led to major government reforms in passenger processing and airport access. The security of Australian airports has also followed this trend, with an increased police presence. However, limited consideration has been given to the costs of these measures, compared to benefit. This Working Paper identifies the factors to be considered in such cost-benefit analyses and the authors outline their preliminary findings. The scope for further research is highlighted, particularly in relation to risk analysis and cost

When Democracy Worked: Reflections on the Passage of the Civil Rights Act of 1964

11 full imprès, b/n. Els fulls d’aquesta sèrie corresponen a la divisió 12 x 8 de la malla de distribució del Mapa topográfico nacional de España 1:50 000.80 x 60 cm1:5 000254 pp

Environmental effects on an optical-UV-IR synthesis array

The Moon offers a stable platform with excellent seeing conditions for the Lunar Optical-UV-IR Synthesis Array (LOUISA). Some troublesome aspects of the lunar environment will need to be overcome to realize the full potential of the Moon as an observatory site. Mitigation of negative effects of vacuum, thermal radiation, dust, and micrometeorite impact is feasible with careful engineering and operational planning. Shields against impact, dust, and solar radiation need to be developed. Means of restoring degraded surfaces are probably essential for optical and thermal control surfaces deployed in long-lifetime lunar facilities. Precursor missions should be planned to validate and enhance the understanding of the lunar environment (e.g., dust behavior without and with human presence and to determine environmental effects on surfaces and components. Precursor missions should generate data useful in establishing keepout zones around observatory facilities while rocket launches and landings, mining, and vehicular traffic could be detrimental to observatory operation

Environmental effects on lunar astronomical observatories

The Moon offers a stable platform with excellent seeing conditions for astronomical observations. Some troublesome aspects of the lunar environment will need to be overcome to realize the full potential of the Moon as an observatory site. Mitigation of negative effects of vacuum, thermal radiation, dust, and micrometeorite impact is feasible with careful engineering and operational planning. Shields against impact, dust, and solar radiation need to be developed. Means of restoring degraded surfaces are probably essential for optical and thermal control surfaces deployed in long-lifetime lunar facilities. Precursor missions should be planned to validate and enhance the understanding of the lunar environment (e.g., dust behavior without and with human presence) and to determine environmental effects on surfaces and components. Precursor missions should generate data useful in establishing keepout zones around observatory facilities where rocket launches and landings, mining, and vehicular traffic could be detrimental to observatory operation

Maximum Storm Surge Elevations in the Tuktoyaktuk Region of the Canadian Beaufort Sea

Storm surges are a significant concern in the siting and design of structures along the Beaufort Sea coast in that the coastal relief is low and the magnitude of surges in this region is large. Coastal storm surge elevations along the southern Canadian Beaufort Sea coast were documented by surveying log debris lines in the Kugmallit Bay/Tuktoyaktuk region. Careful attention to sire selection and survey technique resulted in estimated errors in surge elevation measurements of less than ±0.3 m. The data indicate a local surge maximum has occurred at Tuktoyaktuk at approximately 2.4 m above mean sea level (MSL); lower maximum surge elevations (2 m above MSL) were documented to the north and west of Tuktoyaktuk. There is no evidence that higher surges have occurred during the last 100 years. A surge that occurred in August 1986 measured approximately 1.6 m above MSL at Tuktoyaktuk and decreased to approximately 1.4 m above MSL 20 km to the north and west of Tuktoyaktuk. These surge elevation data provide a basis for the calibration of numerical models of surge and can be used directly in siting and design analysis of coastal structures.Key words: Beaufort Sea coast, storm surges, Kugmallit Bay, TuktoyaktukMots clés: côte de la mer de Beaufort, houle des tempêtes, baie de Kugmallit, Tuktoyaktu